US2185769A - Separable fastener attachment machine - Google Patents

Description

1940- M. KlESSLlNG Em 2,185,769

SEBARABLE FASTENER ATTACHMENT MACHINE Original Filed Aug. 17, 1935 5 Sheets-Sheet 1 IH ii,

IN VENT 0R5 Max .Kiesslin Max J Ki esslinq BY TORNE Jan. 2, 1940. M, KIESSUNG Er AL 2,185,769

'SEPARABLE FASTENER ATTACHMENT MACHINE Origin al Filed Aug. 17, 1955 5 Sheets-Sheet 2 lN\ /ENTOBS Max Kwsslm Max elKiesslinq BY Ina/M 94/0? ATTORNEJ Jan 2, 1940. M. KIESSLING El AL ,185,76

SEPARABLE FASTENER ATTACHMENT MACHINE Original Filed Aug. 17, 1955 5 Sheets-Sheet 5 INV ENTOR5 Max Kpesslin Max J. Klesslinq Jan. 2, 1940. M. KIESSLING E1" A1.

' SEPARABLE FASTENER ATTACHMENT MACHINE Original Filed Aug. 1'7, 1935 5 Sheets-Sheet 4 uyvENTQ s Max. .Klessl lnq. Max JKiesshn q ATTORNE J Jan. 2, 1940. M. KIESSLING El AL 2,185 76 SEPARABLE-FASTENER ATTACHMENT MACHINE Original Filed Aug. 17, 1935 '5 Sheets-Sheet 5 lNV ENTORS Max. Kiesslin 24 'Max J. Kiesglinq BY 4% ATTORNEY use.

' section of the machine.

Patented Jan. 2,, i940 unrrsu STATE-S gm it.

Max Kiessling and Max amazes rss' MA J. sealing, Waterbury.

mliicati A a This invention relates to a machine for at taching a series of alined rows of separable slide fastener elements upon a continuousstrip of tape or fistringer, and is animprovement upon the invention disclosed in the United States Patent 1,971,158 of August 21, 1934, entitled separable fastener. attachment machine."

One object of this invention is to provide a mechanism which will operate a "four-slide" machine from a single driven rotating shaft by means of linkage and cam mechanism instead of employing the customary four angularly arranged shafts driven by gears.

A' further object is to provide a machine of the above nature having means for adjusting. the

the fastener elements are to be attached; and to enable the feeding, forming, and attaching mechanisms to operate coordinately at a greater speed than was previously possible with a resulting increase in output, and a material saving in the cost of production.

A further object is to provide a machine of the above nature which will be relatively simple in construction, inexpensive to manufacture, easy to install and manipulate, economical of space and material, and very eflicient and durable in "With these and other objects in view there has been illustrated on the accomp nying drawings one form in which the invention may be conveniently embodied in practice.

In thedrawings: Fig. 1 represents a plan view of the machine; Fig. 2 is a. front elevation of the main working Fig. 3 is a right end view of the same.

Fig. 4 is a detailed perspective view of the intermittently operated ratchet timingmechanism for controlling the size of the spaces between the successive rows of fastener elements.

Fig. 5 is a plan view of the working ends of thefour cooperating element fastening slides.

- Fig. 6, is a fragmentary vertical elevation,

1935, Sierial No. 36,892

fieptember ,9. 1939 Fig; 7 is a perspective view of the stringer operated switch located upon the tape guide rail.

Fig. 7A is an enlarged perspective view of one. of the fastener elements, per se. M

Fig. 8 is a vertical sectional view through the stringer-operated switch and supporting guideway. a

Fig. 9 is a perspective view of the elementengaging finger of the switch.

Fig. 10 is a diagrammatic lay-out of the electric circuit.

Referring now to the drawings in which like reference numerals denote corresponding parts throughout the several views, the numeral Ill indicates a rectangular bed plate or table supported on pedestal legs II. The table It has four grooves in its upper. surface arranged at rightangles and adapted to receive four reciprocating slides i2, l8, l4 and IS, the slide i2 being the feeding slide, the slides l3 and I4 being lateral forming slides, and the slide it being an auxiliary positioning slide. The slides l2, i3, i4 and ii are all actuated through suitable linkages, as will be explained later, from a single constantly rotating power-driven mainshaft i6 located at the rear of the machine, and journaled in a pair of bearings I1 and I8 located at the opposite rear comers of said machine. 7

The main shaft l6, as best shown in Fig. 1, isprovided at its righthand end with a pulley I9 having free running engagement on said shaft and adapted to be driven by a belt, not shown. The pulley I 9 is adapted to be selectively engaged by asuitable clutch member 20 on the shaft l8 and controlled by a manually operated hand lever 2| for controlling the operation of the machine. The lever 2| is iulcrumed on the outer end of a lateral supportingbracket 22, rigidly secured to the top surface of the bed plate iii. Ahand balance wheel 23 is rigidly-secured to the extreme right end of the shaft l6, and may be used "for manually adjusting and setting up the machine when the clutch.2ii is disengaged.

' Tape tensitming and feeding mechanism upon thecorded edge 24a of thetape 24 in uniend of a dependingbracket 21 secured to the right-hand supporting pedestal leg I l of the machine. Thetape 24 is next passed through anovel tensioning unit 28 and around three guide rolls 29in the manner shown in Fig. 2, thence passing vertically up through a slot 30 in an annular anvil member 3|, (see Fig. 5) located in the center of the bed plate III, at which point theelements 25 are fastened successively upon the corded edge of thetape 24. The threeguide rolls 29 are journaled onstuds 32 projecting forwardly from a dependingbracket plate 33 attached to the underside of the bed plate It.

Thetensioning unit 23 comprises a substantiallyhorizontal guide block 34, having a guide channel 35 in its upper surface, saidblock 34 being pivotally connected to the lower end of thebracket plate 33 by means of a pivot stud bolt 35. The base of .the guide channel 35 is adapted to be covered with ametal lining strip 31, the right-hand end of which is looped around the outer edge of theguide block 34. The opposite end of themetal lining strip 31 is formed into anarcuate section 38 which is adapted to embrace a portion of theadjacent roll 29, and exert a light pressure upon thetape 24 as it is drawn therebetween. A pressure clip 39 provided with a pair of opposedslotted slide cars 40 is detach ably connected to theguide block 34 by means 'of the engagement of saidears 40 with a pair of opposed headed studs II. The pressure clip 39 is integrally formed with a depressed spring finger 42, which is adapted to rest upon a portionof themetal lining 31 and resiliently press upon thetape 24 as it is drawn thereunder. The pressure clip 39 is provided with a looped handle 43 for convenience in manipulating said clip 39 in setting up the. machine.

In order to hold thearcuate end section 38 of themetal lining 31 resiliently against thetape 24 passing around theadjacent guide rail 29, provision is made of atension spring 44 fixed at one end to thepivoted guide block 34, and having its other end attached to a projecting pin' 45a carried on the lower end of aninclined arm 45 rigidly secured to thebracket plate 33 bymeans 1 of thestud bolt 36. By means of this construction theguide block 34 will be urged in a clockwise direction at all times.

In order to intermittently draw thetape 24 through the machine, provision is made of a pair ofserrated rollers 49 and 41 located one above the other and adapted to intermittently rotate by a mechanism to be described later. From this point, thetape 24 will pass along a groovedtape guide rail 48 extending horizontally above and beyond the left-hand edge of the table III as viewed in Fig. 2. The outer end of therail 48 is supported by abracket 49 attachedto the base plate I 0, and the'inner end of said rail 43 is supported on anangle iron 50 secured to the side wall of a. bearing block 5l supported on the bed plate Ill. Thetape 24 is drawn horizontally along the top of theguide rail 48 by means of a pair ofslip friction rollers 52 and 53 located at the outer end of said rail-43, and having their axes in the same horizontal plane, theinnermost roll 52 being secured to a drivenstud shaft 54 mounted in thebracket 49. Asmall sheave 55 is which they strike.

secured to the opposite end of theshaft 54 and is adapted to be driven by a belt 56 passing at rightangles around a pair of guide pulleys 51 and around a constantly rotating crankhead 53 on the extreme left end of the crank shaft IS. Thecrank head 53 is provided with a peripheral groove 59 for receiving thebelt 53. The outeridle friction roll 53 is rotatively supported in the upper end of abifurcated bracket 60 having its lower end Journaled on a pivot pin 5| attached to thebracket 49. The upper end of thebracket 60 is provided with a vertical pin 62 to which is attached one end of a coiledtension spring 63, the opposite end of said spring being secured to avertical pin 64 mounted on thebracket 49. The tape is thus maintained under uniform tension at all times.

Element fastening mechanism close proximity to the slot 30 in the anvil member 3|.

The inner end of the slide I2 is provided with an element pick-up forked finger I2a (Fig. 5) having a slotted end l2b shaped to conform to the general outside contour of thefastener element 25. The feed slide I2 is successively moved forwardly by a relatively heavycoiled spring 68 located underneath the bed plate III, and then retracted by acam wheel 51 carried by the shaft H5. The rear end of the feed slide I2 is pivotally connected to the upper end of a substantially vertical link member 59 by apin 69a in thelink 69 disposed in anelongated slot 6% in the slide I2. Thelink 69 is in turn pivotally secured at its lower end to a depending offset bracket I0 mounted on the under side of the bed plate l0 (see Figs. 2 and 6). Thespring 68 is secured at one end to a stationary part of the machine, such as apin 68a, and at its opposite end to an intermediate portion of the link 59. In order to provide a loose connection between thecam wheel 31 and the feed slide I2, a roller H is mounted on the rear end of said feed slide l2 opposite from thelink 69 and is adapted to engage within a singlefaced groove 12 formed in thecam 61.

When eachfastener element 25 is slipped out from" underneath the magazine by means of the forked finger I2a, saidelement 25 will be pushed astride the corded edge of thetape 24 at the center of the machine. The lateral forming slides I 3 and I4 having forming fingers I30 and Ma, respectively, will at the same time be moved inwardly to close the jaws of theelement 25 upon saidtape 24. The element positioning or locating slide I5 is provided with a finger l5a which 'is slotted at l5b to straddle the portion of thetape 24 which is above the fiat top surface of the anvil 3| to support the same while the element .25 is pushed astride the tape by the forked finger l2a. The ends I5c of the finger I5a insure the proper position and location of the element on the tape in cooperation with the finger I 2a by presenting a positive stop against The fingers Ha, I312, I40, and I5a ride in a horizontal plane over the fiat top surface of the anvil 3| upon which theelement 25 is disposed by the finger I 2a, to be 10- -cated and supported by the anvil 3| in a posi tion substantially at right-angles to thetape 24, 7

. 2,188,789 while the fingers I3a-and I4a are actuated to toggleunits 13 and 14 which are located in suitable'pockets 15 provided in the bed plate III. Thetoggles 13 and 18 are actuated byslides 18 and 11 located in parallel grooves provided in the bed plate I8, and extending to the rear of the bed plate I8. Theslide 18 is provided with a follower roller 18a which engages in a double faced cam groove 18a formed in acam 18 mounted on the shaft I8. The rotation of thecam 18 reciprocates theslide 16 which in turn actuates thetoggle 13 for reciprocating the lateral forming slide I3. Theslide 11 is similarly reciprocated by acam 19 having a double-faced cam groove 18a engaged by a suitable roller attached to the end of theslide 11, whereby the lateral forming slide I4 is also reciprocated. The toggle units- 13 and 14 are capable of adjustment by means of knuckle screws 88 engaging in suitable horizontal apertures in the bed plate I8, said-screws 88 being pivotally connected to the outer links of thetoggles 13 and Hand held in adjusted position by means of a pair of opposed nuts 8I. This construction permits the throw of theslides 13 and I4 to be varied according to the various sizes of fastener elements, and compensates for the wear of the associated fingers I8a and Ma.

The positioning slide I5 is adapted to move inwardly in advance of the feed slide I2 and the lateral forming slides I3 and I4, and is provided with a bifurcated split end finger I5awhich is adapted to straddle thetape 24 and operates to control the proper space between the successive elements as they are attached to saidtape 24 by moving in a plane just above the plane of the slide fingers I2a, I3a and Ma. The slide I8 is adapted to be actuated by means of thecam 18 which also operates theslide 11. This is accomplished by connecting the front or outer end of the slide I5 through a knuckle connected with one end of afirst degree lever 82 fulcrumed in abracket 83 attached to the front edge of the base plate I8. The opposite end of thelever 88 in turn is connected by a knuckle joint 88a to apush rod 84 operating underneath the table III. The rear end of thepush rod 84 is pivotally connected to the lower end of alink 85 having its upper end pivotally connected to abifurcated bracket 86 located on top of the bed plate I8. Aroller 81 is rotatably connected to the intermediate portion of thelink 85 and engages in a double-faced cam groove 81a formed in the adjacent face of thecam 18.

Intermittent tape feed 24 and the proper spacing of the successive ele- 4ments 25 on said tape are controlled by the intermittent rotation of the serrated rolls .48 and 41 which are integrally formed upon-the ends of a pair ofhorizontal shafts 88 and 88. Theshafts 88 and 88 are adapted to be rotated in opposite directions by means of a pair of intermeshed gears 88 and 8| having an equal number of teeth. Thelower shaft 88 is journaled, in the bearing block 5|, while theupper shaft 88 is journaled in one end of a T-shapedswinging block 82 pivotallyzontal hinging pin 88.

In order to normally resiliently'press the upper serrated roll down against the lower serrated roll 41, the T-shapedblock 82 is resiliently urged by means of. .a hori-.

in a clockwise direction around thehinging pin 88 by means of a coiledcompression spring 84 seated in asocket 85 provided in the block 8|. Thecompression of thespring 84 may be varied by means of aset screw 88, threadedly engaged in the swingingblock 82, and a locking nut 88a. Alongitudinal handle rod 81 is secured in the swingingblock 82 and permits theblock 82 to be manually swung about thepin 83 against the influence of thespring 84 to separate theserrated rolls 48 and 41 whenever it is desired to thread the end of the tape therethrough.

Thelower shaft 88 is the power driven shaft, and extends forwardly a greater distance than theupper shaft 88, the front end of saidshaft 88 being journaled in anangle bracket 88 attached to the front edge of the base plate I8. Theshaft 88 is rotatably actuated in a step-by-step manner by aratchet wheel 88 keyed on theshaft 88, a cooperating pawl I88, an oscillating lever I8I and a push-rod I82. The left-hand end of the push rod I82, asviewed in Fig. 1, is pivotally connected to one arm of a bell-crank I83 fulcrumed on top of the base plate I8. The opposite arm of the bell-crank in turn is connected to a pitman rod I84 having adjustable eccentric connection in the rotating crankhead 58.

In order to. prevent the serrated tape-feeding rolls 48 and 41 from over-running, a braking member I85 is attached to thebracket 88 by means of screws 88a and is adapted to embrace a brake drum I86 carried by theshaft 88. The

tension of the brake 'member I85 upon the brake drum I88 may be adjusted by means of a screw I81 and a cooperating helical spring I88. A knurled band wheel I88 is rigidly secured to the extreme front end of the driven shaft '88 by In order to allow the manufacture of fastener stringers having any desired number of successive fastener elements attached thereto, and also means of a locking nut I 88a, for permitting the to allow for a blank space between the rows of I fastener elements, provision is made of an element operated adjustable switch II8, a controlling switch III, a solenoid I I2, and a ratchet tim- Ing mechanism H3, all of which units are adapt ed to cooperate synchronously with each other.

The element-operated switch II8, as best shown in Figs. 2, '7 and 8, consists of a rectangular elongated block II8, having a longitudinal groove II8a, formed in its lower front face for fitting over the rear edge of thetape guide rail 48. A guide screw II8 extends up through the base of the block II8 into a slot I28 formed in the under surface of theguide rail 48, whereby said block will be permitted to slide along saidguide rail 48. The block H8 is adapted to be clamped thereon in any desired adjusted position according to the length of the rows of fasteners desired, as'by a winged set screw l2I. The position of the switch II8, relative to theguide rail 48, determines the length of the successive rows offastener elements 25 to be fastened on thetape 24. Attached to the top of the block II8, as by screws, is a rectangular plate I22 having an integral raised forwardly offset goose-neck arm I23 at its right-hand end for receiving a vertical adjustable binding post I24. The binding post I24 extends downwardly through an insulation bushing I25 to a point below the gooseneck arm I28 to form a stationarycontact I24a,

and it is adapted to be connected by an electric conductor wire I26 leading to the controlling switch III.

To the front face of the block H8 is pivotally attached a rocking lever I21 by means of a headed pivot screw I28, and integral with said lever is a raised forwardly ofiset goose-neck arm I29 arranged underneath and in vertical alinement with the similarly-shaped goose-neck arm I23 of the plate I22. The goose-neck arm I29 supports a movable contact button I130 which is insulated from said arm by means of an insulating bushing I3I. A conductor wire I32 is electrically'connected to the contact button I30 and leads to the solenoid II2 (see Figs. 1 and 10).

In order to render the switch responsive to the rows of elements fastened on thetape 24, the lower right-hand edge of the rocking lever I21 is provided with a transverse slot I33 carrying a vertically slidable feeler finger I34, shown separately in Fig. 9. The feeler block I34 is provided with an upstanding reduced vertical shaft I35 which slidably engages in a vertical aperture in the rocking lever I21 and is provided in its upper exposed end with a pair of opposed slots I36 for slidably receiving the bifurcated end I31 of a leaf-spring I38 rigidly connected at one end to the top edge of said rocking lever I21. The lower surface of the feeler block I34 is adapted to ride along the top of thetape 24 and upon the rows of elements attached thereto, as the tape is intermittently moved to the left along theguide rail 48. When theinitial element 25 of a row of elements engages the feeler block I34, the latter will cause the lever I21 to swing about the pivot screw I28, and cause the movable contact button I30 to engage the stationary contact I24a of the upper goose-neck arm I23, thus closing the circuit through the element-operated switch I I0, the controlling switch III which is at this time closed, and the solenoid II2 which is thereby actuated to operate the feed slide locking plunger rod I65 to be later described.

As the tape continues to advance along the rail '48, the leading end of the row of elements will engage a depending heel I39 secured to the lefthand part of the lever I21,causing the latter to rock on its pivot in a clockwise direction. and

consequently, opening the switch 'I I0. Both the heel I39 and the feeler block I34 will then be sliding along the top of therow'of elements 25, and the switch I I0 will be held in open position.

However, at this time the feeler block I34 will be .ductors I40 and MI leading to a suitable source of energy, not shown. If desired, as shown in the wiring diagram of Fig. 10, an additional switch I40a may be placed in circuit with the'conductor I40 to control the circuit to the machine.

The controlling switch I II (see Figs. 1, 4 and 6) consists of an angle bracket I42, one leg of which isattached to the top of the base plate I0, and

the otherleg extends upwardly for supporting a 'pair of opposed resilient stationary conductor strips I43 of sinuous configuration. The conductor strips I43 are supported in spaced relation and insulated from the upstanding leg of the bracket I42 by means of an interposed insulating block I44 and a pair of binding screws I45 and I46. The stationary strips I43 are adapted to be connected to close the switch III by means of a double-ended movable contactor button I41 transversely located in the end of a horiv The ratchet controlled timing mechanism H3 in cooperation with the solenoid II2 performs the double duty of locking the feed slide I2 a predetermined length of time according to the inter-- vening blank space desired on the stringers between the rows, of elements, and also breaking the electrical circuit established through the solenoid II2, the element operated switch H0, and the controlling switch III at the proper times. The ratchet timing mechanism I I3, as best shown in Figs. 1, .4 and 6, is supported by a bracket block I49 overhanging the rear edge of the bed plate I0. The bracket I49 is provided with a horizontal stud I50 upon which is rotatably mounted a ratchet wheel I5I. One side of the ratchet wheel I5I is provided with an integral raised cam face I52 provided with a V-shaped radial notch I53. l

An oscillating lever I54 is journaled on the stud I50 adjacent the cam face I52 and carries a transverse pivot stud I55 on its outer end for pivotally supporting a pawl I56 engaging the ratchet wheel I5I. The pawl I56 is held in spaced relation from the oscillating lever I54 by means of an intervening flange I55a preferably made integral with the stud I55. The pawl I56 is held in resilient engagement with .the ratchet wheel I 5| by means of a small helical spring I51 attached at one end to a pin I58 on the pawl I56, and adapted to pass around a portion of the flange I55a, the other end of said spring being secured to a radial pin I59 projecting from the'top of the flange I55a.

In order to oscillate the pawl carrying lever I54, the transverse stud I55 is provided with a roller I60, which engages the peripheral surface of an eccentric cam I6I keyed to the main driving shaft I6. The roller'I60 is normally held against the cam I6I by means of a spring I62 tensioned between a pin I63 on the end of the pivot stud I55 and an anchor plate I64 projecting from underneath the bed plate I0, as shown in Fig. 6.

The ratchet wheel I 5I may be tensioned against accidental movement by friction means, such as is clearly illustrated in Fig. '1 in the patent referred to above.

The locking of the feed slide I2 is effected by means of the solenoid 2 which is provided with a plunger rod I65 carrying an adjustable set screw I66 on the forward end, as best shown in Figs. 1 and 4. The set screw I66 is adapted to abut against the head of a screw I61 engaged in one end of a locking slide I68 resting on the bed plate I0, said slide being suitably guided in a slot in the bracket block I49, previously mentioned. The forward nose I680 of the locking slide I68 engages in a slot I69 provided in an L- shaped guide block I10 attached to the top of the bed plate I0, one leg of said block being adapted to bridge across the top of the feed slide I 2.

When the solenold is electrically energized, the

plunger rod I88 is suddenly actuated to give the locking slide I 88 a forward thrust and carry the locking dog I12 fitted into a corresponding transverse groove provided in said locking slide I88 and made rigid thereto. The forward end of the locking dog I12 carries the insulating-block I48 previously mentioned. The locking slide IE8 is normally held in retracted position by means of a helical tension spring I13 connected between a pair of upright posts I16 and I15, the post I14 being made rigid to the bracket block Its, while the post I15 is secured to the top of the dog I12,

and moves with the locking slide I68. The rearend of the ratchet locking dog I12 is provided with a beveled detent I15 normally lying in the radial notch I53 of the cam face I52 when the locking slide its is in its retracted position.

In order to hold the ratchet wheel ISI against rotation while the feed slide i2 is in operation, it is necessary to hold the roller I60 on the end of 'the oscillating lever Its, up out of vcontact with This is accomplished by the eccentric cam ISI. means of a snug I11 preferably formed integral with the hub Iota of the oscillating lever lot, and adapted to abut underneath a projecting lug I18 formed at the rear end of the ratchet locking dog :12 adjacent the detent no.

A precise adjustment of the forward throw of the feed slide I2 may be obtained by means of a set screw I and locking nut IBI engaging in the L-shaped bracketlw in direct alinement with the stop block I'II.

Operation In operation, the element-operated switch no will first ,be clamped in the desired adjust-ed msition on theguide rail 68, said "position being determined by the predetermined length of the rows offastener elements 25 which areto be applied to the tape 26. The blank space in the tape 2t between said rows of course depend upon the number of teeth in the ratchet wheel IEI- and the relative throw of the pawl Itt.

The machine may be started manually by moving the handle of the lever 2i to the right, as shown in Fig. l, which action will throw in the clutch to and start the revolution of the main shaft I6 and the attached cam'wheels 61, 18, I9 and theeccentric head 58. -.At the same time the slides I2, It, III and I5 will be synchronously reciprocated for attaching the fastener elements is fed from the magazineffil upon the intermittently advancing tape 26,; ahd said elements will continue to be attached to said tape to until the initially fastened element '25 comes into contact with the feeler block I36.

The feeler block I84 will then be caused to rise up on the top of the row of elements,25,' which action will cause the lever I2'I'to pivot about the screw I28 in a counterclockwise direction. The contact button I will thus be brought into engagement with the stationary contact button I2 of the binding screw I26 to close the circuit through the solenoid II2 and the switch III which at this time is in closed position. The

magnetic flux thus produced .in the solenoid I It will cause the plunger rod II! to be instantly solenoid I I2.

'ing them into clamping position, cam and toggle forcing the nose 18811 of the locking slide I68 into the path of the stop-block I" on the feed slide I2 to look the latter against operation and cause it to cease feedingelements 25 to thetape 24.

Thetape 24, however, will continue to bein- Simultaneously with the forward movement of the locking slide N8, the insulating block I68 will disconnect the contactor button I41 from the stationary contacts I43 of the switch II I to open the circuit, and immediately de-energize the solenoid II2 after the latter hasperformed its function.- Also, the beveled detent I16 of the dog I12 will become disengaged froin the notch I53 of the cam face I52, and the lug I18 of the ratchet locking dog I12 will move out of the path of the snug I11 to permit the lever I54 todrop and again start the ratchet wheel I5I into rotation. After the locking slide Hit-has been moved into locking position, and the plunger lot has been rendered inactive, said slide I68 will be held in locked position against the influence of the tension spring I13 by reason of the beveled detent I16 riding upon the raised cam face I52 of the ratchet wheel I5I.' The locking slide I88 will retainthe feed slide I2 in locked position for theperiod of time that it takes the ratchet wheel IBI to make onecomplete revolution, after which time the beveled detent I16 will snap into the notch IE3 of the cam face I52. This will permit thespring 113 to retract the locking slide I88.

from the feed slide I2 and obviously eifect the closing of the controlling switch III at the same time. It will be understood that at this time the element-operated switch I III will be open, so that the closing of the switch III will not operate the reciprocating again and the attachment of 'thefastener elements 25 to the tape 2% will continue until the above described cycle of operations has been repeated. I

If it is desired to increase or decrease the length of the rows of elements on the stringers, it will only be necessary for the operator to move the adjustable switch IIII along the railiiB to the left or to the right, respectively. v I

While there has been disclosed inv this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of iliustration only, and that the invention is not to be limited to the specific disclosure but may be modifiedand embod-.

led in various other forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claims.

Having thus fully described the invention, what is claimed as new, and for which it is desired to secure Letters Patent-is: l

1. In a. machine for attaching fastener elements to a strip of tape, a magazine containing a stack of fastener elements, a driving shaft, cam means, a feed slide operatively connected to said shaft by said cam means for removing said ele-' ments successively from said magazine and mov-' linkage mechanism, and a pair of laterally movable slides operatively connected to said shaft by said cam and toggle linkage mechanism for. 'clamping said elements along the edge of said tape. 7

40' The feed slide I2 will then start 2. In a machine for attaching fastener elements-to a vertically movable strip of tape, a

magazine containing a stack of fastener ele-- ments, a horizontal four slide mechanism surrounding said tape, including a feed slide for transferring said elements from said magazine to the edge of said tape, a positioning slide on the opposite side of said tape from said feed slide to hold said elements while being clamped upon said tape, a pair of opposed clamping slides movable at right-angles to said feed and positioning slides, a toggle mechanism operatively connected to each clamping slide, and means to actuate said toggle mechanisms to move said clampingslides 'toward each other.

transferring said elements from said magazine to the edge of said tape, a positioning slide on the opposite side of said tape from said feed slide to hold said elements while being clamped upon said tape, a pair of opposed clamping slides at right-angles to said feed and positioning slides, a single driving shaft, cam means, said feed slide being driven from said shaft by said cam means, and cam and toggle linkage means, said positioning and clamping slides being driven from said shaft by said cam and toggle linkage means.

4. In a machine for attaching fastener elements to a strip of tape in a series of spaced rows, a magazine for holding a stack of fastener elements means for intermittently conveying said elements to said tape and clamping them along one edge thereof, means for intermittently moving said tape between the fastener clamping operations, an electric switch having a movable contact member, a lever for carrying said contact member, and a spring-pressed slidable feeler block resiliently resting upon the elements affixed to said tape, said feeler block having an upstanding guide rod connected to said sprin and means responsive to the closing of said switch for interrupting the feeding of said elements for a period of time sufficient to leave a blank space between successive rows thereof.

5. In a machine for attaching fastener elements to a strip of tape in a series of spaced rows,

a magazine for holding a stack of fastener elements, means for intermittently conveying said elements to said tape and clamping them along one edge thereof, means for intermittently moving said tape between the fastener clamping operations, an electric switch having a movable contact member, a lever for carrying said contact member, said lever also carrying a vertically tape for a period of time suflicient to leave .a

blank space between successive rows.

6. In a machine for attaching fastener elements successively to an intermittently moving strip of tape in a series of spaced rows, a magazine containing a stack of said elements, a feed slide for transferring said elements from said stack into position to be clamped upon said tape,

a spring-retracted locking slide for temporarily restraining the reciprocation of said feed slide between therows of said elements, a solenoid operated plunger for actuating said locking slide, said locking slide carrying a control switch for breaking the circuit through said solenoid, and a supplemental switch actuated by the rows of elements on said tape for closing the circuit through said solenoid.

-' '7. In a machine for attaching fastener elements to a tape in a, series of spaced rows, a magazine containing a stack of said elements, a feed slide forv transferring said elements from said stack into position to be clamped upon said tape, a spring retracted locking slide for temporarily restraining said feed slide between the rows of elements, a plunger in alinement with said locking slide, a solenoid for moving said plunger to actuate said locking slide, and a sup- -plemental switch responsive to the interruption of elements on said tape for closing the circuit through said solenoid, said locking slide carrying means to break the circuit at the end of its movement into locking position.

8. In a machine for attaching fastener elements to a tape in a series of spaced rows, a magazine containing a stack of said elements, a feed slide for transferring said elements from said stack into position to be clamped upon said tape, a spring-retracted locking slide for temporarily restraining said feed slide between the rows of elements, a ratchet wheel, a pawl-carrying lever for intermittently actuating said wheel, a cam for rocking said lever, said lever being held out of engagement with said cam during the operation of said feed slide.

9. In a machine for attaching fastener ele ments -to.a tape in a series of spaced rows, a magazine containing a stack of said elements, a feed slide for transferring said elements from said stack into position to be clamped upon said tape, a spring-retracted locking slide for temporarily restraining said feed slide between the rows of elements, a ratchet wheel, a pawl-carrying lever for intermittently actuating said wheel, a cam for rocking said lever, and means on said lever adapted to engage said locking slide to disengage said lever front said cam during the operation of said feed slide.

10. In a machine foriattaching fastener elements to a tape in a series of spaced rows, a magazine containing a stack of said elements, a feed slide for transferring said elements from said stack into position to be clamped upon said tape, a spring-retracted locking slide for temporarily restraimng said feed slide between the rows of elements, a ratchet wheel, a pawl-carrying lever for intermittently actuating said wheel, and a cam for rocking said lever, said locking slide having means efiective when in retracted position for withholding said lever from engagement by said cam.

11. In a machine for attaching fastener elements to a tape, means for imparting a continuous step by step motion to said tape, a plurality of idle guide rolls arranged in triangular formation to impart frictional resistance to the movement of said tape, and a spring-pressed lever having an arcuate section for frictionally embracing a portion of the tape on one of said rolls. 12. In a machine for attaching fastener elements to a tape, means for imparting a continuous step by step motion to said tape, a plurality of idle guide rolls arranged in triangular forma-' tion to impart frictional resistance to the moves eaves ment of said tape,'and meansembracing a portion of one of said rolls for frictionally clamping upon said tape to control the tension therein.

13. In a machine for attaching fastener elements to a tape, means for imparting a continuous step by step motion to said tape, a plurality of idle guide rolls arranged in triangular formation to impart frictional resistance to the movement of said tape, a spring-pressed lever having an arcuate section for frictionally embracing a portion of the tape on one of said rolls, and a clip member detachably secured to said lever for embracing the top of said tape.

14. In a machine for attaching opposed jawed fastener elements to a tape, a magazine for containing a stack of such elements, a detachable anvil having a flat top surface and provided with a guiding and alining slot through which the tape is fed, a feed slide adapted to be moved to engage an element and move it from said magazine and dispose it upon said anvil to be supported thereby and with its jaws astride the tape portion above said anvil, an element positioning slide cooperating with said feed slide to position an element relatively to the tape, a pair of opposed element clamping slides disposed one on either side of the tape and movable to engage-and close the element jaws thereon, all of said slides being movable in substantially the same plane and above the top surface of said anvil, and coman element relatively to the tape, a pair of opposed clamping slides disposed one on either side of the tape and movable to engage and close the element jaws thereon, all of said slides being movable in substantially the same Plane and above the top surface of said anvil, and common means to move said slides including a toggle linkage for actuating each of said clamping slides.

16. In a machine for attaching opposed jawed fastener elements to a tape, a magazine for containing a stack of such elements, an anvil having a flat top surface and a slot through which the tape is fed, a feed slide adapted to be moved to engage an element and move it from said magazine and dispose it upon said anvil to be supported thereby and with its jaws astride the tape portion above said anvil, an element positioning slide cooperating with said feed slide to position an element relatively to the tape, a pair of opposed. element clamping slides disposed one on either side'of the tape and movable to engage and close the element jaws thereon, all of said slides being movable in substantially the same plane and above the top surface of said anvil, c'am controlled means for moving each of said slides, the cam controlled means for moving said clamping slides including a toggle linkage operatively connected thereto.

17. In a machine for attaching opposed jawed fastener elements to a tape, a magazine for containing a stack of such elements, an anvil having a flat top surface and a slot through which the tape is fed, a feed slide adapted to be moved to engage an element and move it from said magazine and dispose it upon said anvil to be supported thereby and with its jaws astride the tape portion above said anvil, an element positioning slide cooperating with said feed slide to position an element relatively to the tape, a pair of 0D- posed element clamping slides disposed one on either side of the tape and movable to engage and close the element jaws thereon, all of said slides being movable in substantially the same plane and above the top surface of said anvil, cams and cam-controlled means for moving each of said slides, each cam-controlled means for moving said clamping slides including a toggle an element positioning slide adapted to be engaged by the element and to locate the element in position to be secured to the tape, a pair of opposed slides laterally movable, to clamp the element to thetape, all of said slides being disposed and movable substantially in a horizontal plane above the flat top'surface of said anvil, a common driving shaft, and means actuated by said shaft for operating all of said slides in synchronism.

19. In a machine for attaching fastener elements to a tape, a substantially vertical magazine for containing a stack of such elements, an anvil having a flat top surface and a slot through which a tape is fed, a feed slide adapted to engage said elements successively and move them upon ablesubstantially in a horizontal plane above the flat top surface of said anvil, and means to move said slides including a common driving shaft, cams on said shaft, and cam-controlled means for moving each of said slides, the camcontrolled means for moving each of said clamping slides-including a toggle linkage.

'20 In a machinefor attaching fastener elements to a strip of tape, a magazine containing a stack-of fastener elements, a driving shaft, cam means, a feed slide operatively connected to said shaft by said cam means for removing said elements successively from said magazine and moving them into clamping position, cam and toggle linkage mechanism, a pair of laterally movable slides operatively connected to said shaft by said cam and toggle linkage mechanism for clamping said elements alongthe edge of said tape,-and adjustableknuck'le joints in said cam and toggle linkage mechanism to vary the throw of said laterally movable slidesto compensate for wear and in the size of said'fastener elements.

21. In a machine for attaching fastener ele-' rounding said tape, including a feed slide for transferring said elements from said magazine to the edge of said tape, a positioning slide on the opposite side of said tape from said feed slide to hold said elements while being clamped upon said tape, a pair of opposed clamping slides movable at right-angles to said feed and positioning slides, a toggle mechanism operatively. connected to each clamping slide, means to actuate said toggle mechanisms to move said clamping slides toward each other, and means for actuating said positioning slide driven by means passing under one of said clamping slides.

22. In a machine for attaching fastener elements successively to an intermittently moving strip'of tape in a series of spaced rows, a magazine containing a stack of said elements, a feed slidefor transferring said elements from said stack into position to be clamped upon said tape. a spring-retracted locking slide for temporarily restraining the reciprocation of said feed slide between the rows of said elements, a solenoid operated plunger for actuating said locking slide, said locking slide carrying a control switch for breaking the circuit through said solenoid, and a supplemental switch actuated by the rows of elements on said tape for closing the circuit through said solenoid, said control switch comprising an insulating block carried by said locking slide, a movable contact on said block, and a fixed contact in said circuit.-

23. In a machine for attaching fastener elements to a tape in a series of spaced rows, a magazine containing a stack-of said elements, a feed slide for transferring said elements from said stack into position to be clamped upon said tape, a spring-retracted locking slide for tem-.

said locking slide to engage said snub when the feed slide is in operation to hold said lever out of engagement with said cam.

24. In a machine for attaching fastener elements to a tape, means for moving said tape, a guide roll for said tape, and means for embracing aportion of said guide roll to resiliently and frictionally press said tape against said guide roll comprising a'pivot'ed block having a pair of resilient fingers thereon through which said tape passes on its way to said tape moving means.

25. In a machine for attaching fastener elements to a tape, means for moving said tape, a guide roll for said tape, and means for embracing a portion of said guideroll to resiliently and frictionally press said tape against said guide roll, comprising a pivoted block having a resilient arcuate end finger and an adjustable pressure clip detachably secured to said block, said clip having a finger located adjacent'said arcuate end finger for cooperating therewith.

26 In a machine for attaching fastener'ele-' sald locking slide.

ing a portion of said guide roll toresl'llently and frictionally press said tape against said guide roll comprising a spring-pressed pivoted block having a pair of resilient. fingers thereon through which said tape passes on its way to said tape moving means. I

27. In a machine for attaching fastener elements to a strip of tape, a magazine containing a stack of fastener elements,,a driving shaft, cam means, a feed slide operatively connected to said shaft by said cam means for removing said elements successively from said magazine and moving them into clamping position, cam and toggle linkage mechanism, a pair of laterally movable slides operatively connected to said shaft by said cam and toggle linkage mechanism for clamping said elements along the edge of said tape, and spring means to cooperate with said cam means to prevent backlash in the movements of said feed slide. I

28.-In a machine for attaching fastener elements to a vertically movable strip of tape, a magazine containing a stack of fastener elements, 9. horizontal four slide mechanism surrounding said tape, including a feed slide for transferring said elements from said magazine to the edge of said tape, a positioning slide on the opposite side of said tape from said feed slide to hold said elements while being clamped upon said tape, a pair of opposed clamping slides at right-angles to said feed and positioning slides, a single driving shaft, cam' means, said feed slide being driven from said shaft by said cam means, and cam and toggle linkage means, said clamping slides being driven from said shaft by said cam and toggle linkage means, said positioning slide carrying operating means on its extrenity located in a plane slightly above said feed slide and said clamping slides.

29. In a mechanism for feeding tape to a machine for attaching fastener elements thereto, a fixed driven shaft, an idler shaft parallel to said fixed shaft and movable transversely with respect thereto, a pair of serrated tape clamping rollers on the ends of said shafts, intermeshing gears to cause said shaftsto rotate in opposite directionsat the same speed, a ratchet wheel on said driven shaft, oscillating pawl means for indexing said ratchet wheel in synchronism with the operation of said element-attaching means,

and brake means to retard the motion of said driven shaft and prevent overrunning.

30. In a machine for attaching zipper fastener elements to a continually moving tape in a series 'of spaced rows, means for feeding said elements sliding plunger in alinement with said locking slide, a solenoid to directly engage and force said plunger against said locking slide, a switch responsive to the interruption of elements on said tape for closing the circuitthrough said solenoid and means carried by said slide for opening said circuit instantly after said plunger has operated MAX KIEssLING. MAX J.- KIESSLING.

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