US2283003A - Printing apparatus - Google Patents

Description

3 Sheets--SheecV l l l ENToRs ATTORNEY May 12, 1942. G. o. FRos-rAD ET AL i PRINTING APPARATUS Filed May 15, 1940 May 12, 1942.

G. O. FROSTADY ET AL PRINTING'APPARATUS Filed May 1:5, 1940 3 sheds-sheet 2 IIIILLLI lllil QQX NQ\ f -May 12,1942. G. ofFRosTAD AET AL PRINTING APPARATUS Filed My 13, `1940 3 Sheets-Sheet 5' Patented May 12, 1342 aranci Unirse smrss earner orrics 2,283,003 PRINTING APPARATUS George 0. Frostad and Raymond J. Nebel, Milwaukee, Wis., assignors to C. B. Henschel Mfg. Co.

Application May 13, 1940, Serial No. 334,764

(Cl. i-182) 28 Claims.

Our invention relates in general to improvements in the art of printing, and relates more specically to improvements in the construction and operation of printing apparatus or presses of the rotary cylinder type.

A primary object of the present invention is to provide improved printing apparatus which is relatively simple, compact and durable in ccnstruction, and which is moreover highly efficient and iiexible in operation.

When printing sheets or webs of relatively delicate materials such as regenerated cellulose, wax or glassine paper, metal foils, cloth, fancy paper, or the like, with special inks, in a variety of colors, and at high speed, many diicul-ties are encountered. Because of the fact that many of the special inks used for this class of work, tend to dry rapidly, it is necessary to avoid stoppage of the ink transfer rollers in order to prevent the ink from drying thereon, when the rotation of the plate or type cylinders is temporarily arrested to permit inspection, cleaning or adjustments of parts. It is also frequently desirable to stop the rotation of the impression cylinder and of the type cylinders for inspection or cleaning thereof, and in such cases it should be possible to again re-start the machine and to bring the impression and plate cylinders into proper coaction gently and Without shock. When performing multi-color work, it is also desirable that the operator be able to conveniently and accurately adjust the various parts for most effective and true registration; and while machines of this general class should be operable at variable speeds and at relatively high maximum speed, they should also be adapted for quick and safe stoppage. It should also be possible to quickly vary the diameters of the plate or type cylinders of these rotary printing machines, and to readily aline the cooperating type and impression cylinders and the ink transfer rollers; and it is also desirable to provide means for effecting proper positioning and adjustment of the ink supply pan, with minimum effort.

It is therefore a more specific object of our present invention to provide an improved printing press which effectively meets all of the abovementioned requirements and desirable modes of operation, in a simple and highly eiiicient Inanner.

Another specic object of this invention is to provide improved throw out mechanism for simultaneously removing a plate or type cylinder from an impression cylinder and the sheet or web coacting with the latter, and the ink supply roll from the plate or type cylinder, and for maintaining the ink transfer rolls in operation even if the rotation of either of said cylinders is arrested.

A further specific object of the invention is to provide improved mechanisms for quickly and accurately effecting adjustment of various parts of a cylinder press in a manner which will insure true registration of multi-colors and most efflcient cooperation of the Yvarious elements of the assemblage.

Still another specio object of ourinvention is to' provide an improved printing device capable of making impressions in various colors in rapid succession on a continuous relativelyfrail web travelling at highv speed, without danger of tearing or marring the web.

An additional specific object of the present invention is to provide variousV improvements in the details of construction and operationof cylinder printing presses, whereby the eiciency and safety thereof is enhanced to a maximum, whileA the cost of production of the printed matter is minimized.

These and other objects and advantages of our invention will be apparent from the following detailed description.

A clear conception of the several features constituting our presen-t improvement, and of the mode of constructing and of operating printing presses built in accordance with the invention, may be had by referring to the drawings accomlpanying and forming a part of the specification` wherein like reference characters designate the same or similar parts in the various views.

Fig. l is a somewhatdiagrammatic and part sectional side elevation of one of our improved printing press assemblages showing two sets of type cylinders and ink transferrolls cooperating with a common impression cylinder; Y

Fig. 2 is an enlarged fragmentary side View of the impression cylinder and of one of the type cylinderand ink transfer assemblages, showingr a type or plate cylinder of minimum diameter;

Fig. 3 is a similarly enlarged fragmentary and part sectional end view ofl the mechanism shown in Fig. 2; l l

Fig. 4 is a likewise enlarged side View similar to that of Fig. 2, but showing a type or plate cylinder of maximum diameter;

' Fig. 5 is a further enlarged irregular development of fragments of the impression and type cylinders and of the ink transfer rolls, showing the ink roll drive and type cylinder adjusting mechanism, the development following the line 5-5 of Fig. 2;

Fig. 6 is a diagram of the type cylinder and ink roll throw out mechanism, showing the elements in active position; and

Fig. '1 is a similar diagram showing the element in inactive position, with the ink transfer rolls being rotated by the auxiliary propelling means.

While our invention has been shown and described in connection with a continuous web revolving cylinder press having a plurality of plate or type cylinder assemblages cooperable with a common impression cylinder, it is not our desire or intention to thereby unnecessarily restrict the scope or utility of the improvement.

Referring to the drawings, and especially to Figs. l, 2 and 3, the improved printing apparatus shown therein comprises in general amain frame 8 of sturdy construction mounted upon an equally sturdy elongated base 9; a relatively large impression cylinder II) journalled for rotation upon a hollow horizontal shaft I secured to theframe 8, the cylinder I8 having peripheral teeth I2 meshing with a driving pinion I3 carried by a power shaft |4 which is journalled in bearings also mounted on the frame 8l; a web supply roll I5 journalled for frictional rotation by pull on the supply web I6, upon a sub-frame I1 carried by the base 9 some distance from theframe 8; a printed web receiving roll I8 journalled for positive rotation by suitable driving mechanism, upon another sub-frame I9 carried by the base 9 remote from theframe 8; a series of tensioning and guiding rollers 20 supported by overhead framing 2|,V and coacting with the supply web I6 passing from the roll I5 to the cylinder I; another series of tensioning and guidingrollers 22 supported by the overhead framing 2| and coacting with the printedweb 23 delivered from the impression cylinder I0 to,Y the receiving roll I8; one or more form, plate ortype cylinders 24, each adapted to coact with theweb portion 25 embracing the impression cylinder I0, and

being journalled for rotation in alower carriage Zi 28 which is movable along coactingslides 51 resting upon theframe 8, toward and away from the cylinder I8; an ink doctor ortransfer roll 21 adapted to coact with eachtype cylinder 24,

and to also constantly engage an adjacentink feed roll 28, therolls 21, 28 being journalled for rotation in anupper carriage 29 slidably supported upon thelower carriage 26; and mechanism for simultaneously shifting thecarriages 26, 29 relative to the impression cylinder IIJ and relative to each other so as to make thetype cylinders 24 either active or inactive at will.

Each of theframes 8, I1, I9 may consist of vspaced side elements rigidly attached to the base 9, and the latter may be formed of a series of firmly united sections and may be provided with transverse walks 39 for the attendant, see Fig. l. The power shaft I4 and the mechanism for positively revolvingV the roll I8 Amay be driven in synchronism by means of one or more motors, not shown, and the rotation of the web supply roll I should be retarded suiciently to prevent free whirling thereof. Each of thetype cylinders 24 is rotatably supported by a shaft 3| journalled in the lower carriage 2S, and theink transfer roll 21 of eachY set is rotatable about ashaft 32 which is journalled for rotation inlevers 33 pivotally suspended from theupper carriage 29. Theink pan roll 28 of each set is rotatable about ashaft 34 which is journalled for rotation in theupper carriage 29, and theroll 28 has its lower peripheral portion disposed within anink pan 35 slidably supported upon a vertically adjustable shelf 36.- The peripheral driving teeth |2 of the impression cylinder I9, are preferably of the helical type as shown in Fig. 5, and are adapted to mesh with ahelical gear 31 secured to an end of thetype cylinder 24 and keyed to the shaft 3|, so that when thecylinder 24 is in active position and the cylinder Ill is rotating, thecylinder 24 will also rotate in contact with theweb portion 25. Thegear 31 is adapted to mesh with ahelical gear 38 secured to an end of the ink transfer ordoctor roll 21,` and thisgear 38 is connectable to the adjacent portion of the supportingshaft 32 by means of a free wheeling or one-way clutch 39 which is effective to drive theshaft 32 only when theroll 21 coacts with thetype cylinder 24. The end of theshaft 32 remote from the clutch 39, has a gear 40 secured thereto, which constantly meshes with agear 4| secured to the ink panroll supporting shaft 34, and the end of theshaft 34 remote from thegear 4| is connectable to the shaft 42 of anauxiliary motor 43, through reduction gearing 44 and by means of another free wheeling or one-way clutch 45 which is effective only when theink transfer roll 21 is disengaged from thetype cylinder 24. The assemblage is such, that when the press is operating normally, the rotation of the impression cylinder I0 by the power shaft I4 and gear I3, will impart positive rotary motion to thecylinder 24 and ink rolls 21, 28 through the teeth I2,gears 31, 38, clutch 39, andgears 40, 4|; whereas when the cylinders I0, 24 are inactive, theink rolls 21, 28 will be rotated bythemotor 43 through the shaft 42, reduction gearing 44,clutch 45,shaft 34, and gears 4I), 4|.

In order to insure positive registry of all of thetype cylinders 24, with the work orsheet portion 25 carried by the impression cylinder I0, it is necessary to provide some means for effecting both rotary as well as longitudinal adjustment of thecylinders 24 relative to the cylinder I8. While the improved mechanism for effecting such adjustment of each plate ortype cylinder 24 has been omitted from the smaller disclosures, it is shown in detail in Fig. 5. Thehelical gear 31 is provided with a central sleeve which is splined for sliding along the shaft 3|, and has anannular end'groove 46 therein, with which an adjustingfork 41 coacts, and thisfork 41 is slidable in a hole in the side wall of thelower carriage 26 by means of an adjusting screw 48 having alock nut 49 and a fixed collar 50 thereon. The portion of the shaft 3| remote from thegear 31 has a grooved collar 5| thereon and adapted to be secured thereto by one or moreset screws 52, and anotherfork 53 which is slidable in the opposite side wall of thecarriage 25 coacts with the groove in the collar 5|. TheVfork 53 is movable by means of an adjustingscrew 54 having alock nut 55 and a fixedcollar 56 thereon, and thescrew 54,fork 53, collar 5| and setscrews 52 normally serve to prevent longitudinal or axial shifting of the shaft 3| andtype cylinder 24. When thelock nut 49 is released,

v the screw 48 maybe manipulated to shift thefork 41 andhelical gear 31 along the shaft 3|, thereby rotating thetype cylinder 24 relative to the impression cylinder I9, without producing relative longitudinal shifting of these cylinders. In order to obtain relative longitudinal adjustment of the cylinders I0, 24, it is only necessary to loosen thelock nut 55 and to manipulate the adjustingscrew 54, thereby causing thefork 53 to pull or push the shaft 3| andcylinder 24 without moving the gear 31'. Proper rotary and longitudinal registry may therefore be independently effected at each type cylinderV 2li', by ma nipulating the proper adjustingscrews 48, 54; and it isV to be noted that the inclination of the teeth of the helical gears I2, 31 is useful Yin effecting rotary adjustment of theseveral cylinders 24 about their axes. These adjustments for registry may also be made either while the press is stopped or in operation.

It frequently becomes desirable to change the type or plate set up, and to replace thesmall type cylinders 24 with a larger cylinder 24', see Figs. 2 and 4and in order to permit this to be done, each slidable lower carriage is mounted upon spacedslides 51 which are adjustable alongguides 58 and relative to themain frame 8, by means of a pair of horizontal lowermost threaded spindles or adjustingscrews 59. The adjustingscrews 59 of each set, are journalled for rotation in brackets 59' carried by the slides 5'? and have screw thread coaction with thexed frame 8, so that simultaneous rotation of the twoscrews 59 will cause theslides 51 to travel equal distances along theirxedsupporting guides 58. Relative adjustment between the twoslides 51 of each set, may be obtained by manipulating onescrew 59 to the exclusion of the other, and in order to facilitate simultaneous rotation of the twoscrews 59 of a set, each screw may be provided with aworm wheel 60 coacting with the threads thereof, and theseworm 4wheels 60 may be caused to coact with spaced screw threads or worms 9E carried by a transverse shaft orrod 62 having ahand wheel 63 thereon, so that by turning thehand wheel 53 theworm wheels 69 will be rotated together and will move the twoscrews 59 equal amounts in the same direction. Thescrews 59 may be locked in adjusted position by means of anut 94, and theworm wheels 69 are prevented from shifting axially by virtue of their coaction with the brackets 59'. When thevslides 51`are thus shifted toward and away from the impression cylinder I9 to accommodatetype cylinders 29, 24 of different diameters, the lower carriages and theupper carriage 29 will be correspondingly moved, as a unit; and after theslides 51 have been moved the required distance i to properly position thelower carriage 26, theupper carriage 29 should be adjusted to properly position theinking rolls 21, so as to provide $6l and worm wheelsv 61, and for maintaining the parts in adjusted position.

In order to effect shifting of the upper carriage" oradjustingscrews 15 coacting with the opposite sides of thecarriage 29 and withworm wheels 16, are' provided. Theseworm wheels 16 are journalled for rotation in brackets 11 which are pivotallyv suspended by pivots 18 from upper portions of thelevers 69, and theworm wheels 16 coact with spaced screw threads orwormsv 19 se- I cured to another transverse shaft orrod 80 journalled in the brackets 11 and provided with a hand wheel 8 l, so that rotation of the hand wheel 8l will cause theworm wheels 16 to rotate simultaneously and thereby move bothscrews 15 to shift thecarriage 29. During such back and forth movement of thecarriage 29, theink pan 35 into which thelower roll 28 extends, will be slid along theshelf rails 36, and these rails are provided with downwardly extendinginclined racks 82 which coact withguideways 83 on theframe 8. Theracks 92 are movable along theguideways 83 by means ofpinions 84 carried by atransverse shaft 85 and coacting with the rack teeth, and theshaft 85 is rotatable with theaid of ahand wheel 86 and is normally locked against rotation by a jaw clutch 81. By releasing the clutch 81 and turning theshaft 85 with the aid suicient clearance for insertion of the new type cylinder 28'.

In order to effect shifting of thelower carriage 26 andcylinder 24 either simultaneously with or relative to its supportingslides 51, intermediate threaded spindles or adjustingscrews 66 coacting with the opposite sides of thecarriage 26 and withworm wheels 51, are provided. The worm wheels 61 are journalled for rotation inbrackets 68 which are pivotally suspended bypivots 63 from the medial portions oflevers 89 having their lower ends pivotally suspended from the lower brackets 59', and the worm wheels 61 coact with spaced screw threads orworms 19 secured to a transverse shaft or rod 1| journalled in thepivot brackets 58 and having ahand wheel 12 thereon, so that rotation of the`hand wheel 12 will cause the worm wheels G1 to rotate in unison toA thereby move bothscrews 85 to shift thecarriage 26. Thescrews 66 are also provided with lock nuts 13 for positively preventing rotation of the screws of thehand wheel 86, theshelf 36 and theink pan 35 may be raised'or lowered asl desired. In order to bring theink transfer roll 21 which is suspendedfrom thelevers 33, intoproper coaction with theroll 28 andcylinder 24, the suspension levers 33 are swingably suspended at their medial portions from pivot pins 88 carried by thecarriage 29, and the ends of thelevers 33 remote from theroll 21 are provided with pivot blocks 89 in which adjusting screws 99 are journalled. The threaded lower ends of the screws 99 coact with thecarriage 29 in such manner that turning of the screws 99 Will cause thelevers 33 to swing about the pins 88 and will thereby raise or lower thedoctor roll 21. Therolls 21, 28 may therefore be adjusted relative to each other, and may be simultaneously moved toward or away from thetype cylinder 29 with the aid of thescrews 15, and these screws are adapted to 'be locked in adjusted position by means of lock nuts 9i.

It frequently becomes desirable in the operation of printing presses of this kind, to remove the plate ortype cylinders 24, 24 from` the impressionl cylinder I9 andw'eb portion 25, and to simultaneously remove the ink transfer roll 21 from the type cylinder, either in order to eiTect adjustment of parts or to remove the type cylinder for replacement. This separation of the elements when desired for any reason, may be ef fected with the aid of the4levers 59 coacting with the blocks or pivot brackets 11, 98 and with thecarriages 29', 26 respectively, through thescrews 15, 66, see Figs. 2, 3, 4, 6 and '1. The upper ends of thelevers 59 are pivotally connected to the corresponding ends oflinks 92, the opposite ends of whichac'oact witheccentrics 93 secured to atransverse shaft 94 which is journalled in theslide 51; The shaft 99 is rotatable to simultaneously revolve theeccentrics 93, by means of a bevel gear 95 which coasts with another bevel gea-r 99 secured to one end of anothershaft 91 having a spur geare thereon. The gear 98 coacts with a rack 99 slidably supported by the frame, and the rack 99 is vertically reciprocable by means of a pinion secured to a shaft |0| journalled in theframe 8 concentrically of the cylinder |0, and having hand levers |02 secured to an end thereof. Theshaft 91, gear 98, rack 99 and pinion |00 may be duplicated on the opposite side of the machine, and the shaft |0| is in that case, extended through the hollow shaft Il of the impression cylinder I0, so that the single set of levers |02 may be utilized to actuate both rack and pinion assemblages. The vertically slidable racks 99 are also adapted to cooperate with several of theshafts 91, and these shafts are moreover adapted to coact with theeccentrics 93 of a plurality of type cylinder and inking units, so that all of thetype cylinders 24, 24 coacting with the impression cylinders will be thrown out and brought into action simultaneously. Since it is desirable t0 have the inking rolls 21, 28 continue to rotate at all times and even when the rotation of either or both cylinders I0, 24 is arrested, theauxiliary motor 43 has been provided for the purpose of rotating therolls 21, 28 whenever the driving coaction between thegears 31, 38 is interrupted. One of thelevers 69 may be caused to make contact in the electrical feed line |03 of the auxiliary motor circuit, when thelevers 69` are swung away from the cylinder l0 as in Fig. '1, so that themotor 43 will immediately become effective to rotate the inking rolls 21, 28 whenever the normal drive for these rolls is interrupted.

While the normal operation of the improved printing press should be relatively apparent from the foregoing detailed description, this operation may be described generally as follows. After the impression cylinder I0, thetype cylinder 24, and the inking rolls 21, 28, have been brought into proper cooperative relation, the web may be fed from the supply roll l5 around the impression cylinder |0 and back to the discharge roller I8, and as the impression cylinder I0 is revolved by application of driving power to the shaft I4, the web will continuously travel from the roller |5 around the cylinder I0 and to the roller I8. During this advancement of the web, which may be at relatively high speed, thetype cylinders 24 which are constantly supplied with ink from thepans 35 by therolls 28, 21, will print upon theweb portion 25 as this web portion is conveyed past the type cylinders. If it becomes desirable to remove thetype cylinders 24 from coaction with theweb portion 25, this may be done at any time by merely manipulating the radial levers |02. As the shaft |0I is rotated to cause the rack 99 to move, theshafts 91 will also be rotated thereby causing theeccentrics 93 whichare carried by theshafts 94 to rotate. Thelevers 69 will then be shifted from the position shown in Fig. 6, to that shown in Fig. 7, thereby removing thetype cylinders 24 from the impression cylinder I0, and simultaneously removing the doctor rolls 21 from thetype cylinders 24. This separation of the ink transfer rolls 21 from thetype cylinders 24, will also remove the ink roll driving gears 38 from thegears 31, and simultaneously with this removal thelevers 69 will complete the electrical circuit in the line |03, thereby placing theauxiliary motors 43 in operation. Thesemotors 43 will then become effective to continue the rotation of the ink rolls 21, 28, and will thus prevent the ink from drying on these rolls. The operation of the throw outmechanism will then permit safe access to the plate or type rolls 24,

for adjustment or cleaning, and adjustment of each of theserolls 24 may then be effected, independently of all of the others, by manipulating the adjusting screws 48, 54 shown in Fig. 1, in a manner previously described.

If for any reason it should become desirable to replace thetype cylinders 24 byother cylinders 24 of different diameter, theslide 51 may be withdrawn from the impression cylinder I0, and thecarriage 29 may be slid along thecarriage 26 in a direction away from the impression cylinder I0, by merely manipulating thescrews 59, 66, 15. During this sliding of thecarriage 29 relative to thecarriage 26, theink pan 35 will be slid along theshelf krails 36. The location of thetype cylinders 24, and of the ink rolls 21, 28 may be independently adjusted by manipulating the proper adjusting screws 59, 66, 15, and these screws may be locked in adjusted position. The location of thedoctor roll 21 relative to theink pan roll 28 and relative to thetype cylinder 24, may be adjusted by manipulating the adjustingscrew 90, and the worm gearing interposed between each of the adjusting screws 59, 66, 15 on opposite sides of the machine, will permit convenient and simultaneous adjustment of the elements on the opposite sides of the machine, which cooperate with the several adjusting screws. Theink pan 35 may be raised or lowered by manipulating thehand wheel 86, after the clutch 81 has been released, thus providing various adjustments which materially enhance the flexibility of operation of the machine.

From the foregoing detailed description it will be apparent that our present invention provides a relatively simple, compact and durable rotary printing press, which is highly efficient in operation and extremely flexible in use. The press may be operated to produce printing having a Variety of colors, or only a single color, and the single set of hand levers |02 serve to actuate the throw outs on all of the type cylinder units. All portions of the machine are conveniently accessible for inspection and adjustment, and those portions which are subject to considerable vibration during normal use of the machine, are adapted to be locked in adjusted position. The throw out of the type cylinders and ink rolls may be quickly effected, and the ink is prevented from drying on the ink transfer rolls whenever such throw out of the type cylinder takes place. The functioning of the machine inv this respect is automatic except that the throw out mechanism is actuated manually, and by virtue of the fact that the impression cylinder I0 is rotatable about a hollow shaft, the throw out motion transfer mechanism may be readily duplicated on opposite sides of the printing press.

It should be understood that it is not desired to limit this invention to the exact details of construction or to the precise mode of use, herein shown and described, for various modifications within the scope of the claims may occur to persons skilled in the art.

We claim:

l. Printing apparatus comprising, an impression cylinder rotatable about an axis, lower and upper carriages movable parallel to each other toward and away from the periphery of said cylinder, a plate cylinder journalledupon said lower carriage and normally coacting with said impression cylinder, an ink roll carried by said upper carriage and normally coacting with said plate cylinder, and means for simultaneously moving said carriages relative to said impression cylinder and relative to each other to separate said cylinders from each other and said plate cylinder from said roll.

2. Printing apparatus comprising, an impres- Asion cylinder rotatable about an axis, lower and upper carriages movable parallel to each other toward and away from the vperiphery of saidV cylinder, a plate cylinder journalled upon said lower carriage and normally coacting with said impressioncylinder, an ink roll carried by said upper carriage and normally coacting with said plate cylinder, and a lever pivotally associated with said carriages for simultaneously moving Ythe same relative to each other and relative to said impression cylinder to separate said cylinders from each other and from said roll.

3. Printing apparatus comprising, an impression cylinder rotatable about an axis, lower and upper carriages movable parallel to each other toward and away from the periphery of lsaid cylinder, a plate cylinder journalled upon said lower carriage and normally coacting with said impression cylinder, an ink roll carried by said upper carriage and normally coacting with said plate cylinder, a lever pivotally associated with said carriages for simultaneously moving the same relative to each other and relative to said impression cylinder to separate said cylinders from each other and from said roll, and means for effecting independent adjustment of said carriages relative to said lever.

4. Printing apparatus comprising, an impression cylinder, a pair of carriages movable parallel to each other toward and away from the periphery of said cylinder, a plate cylinder suspended from one of said carriages and normally coacting with said impression cylinder, an ink roll suspended from the other of said carriages and normally coacting with said plate cylinder, and means for effecting either independent or simultaneous movement of said carriages toward or away from said impression cylinders.

5. Printing apparatus comprising, an impression cylinder rotatable about a xed horizontal axis, a lower carriage slidable upon a xed support toward and away from said cylinder, an intermediate carriage slidable upon said lower carriage, a plate cylinder journaled upon said intermediate carriage for rotation about a horizontal axis, an upper carriage slidable upon said intermediate carriage, an ink roll journalled upon said upper carriage for rotation about a horizontal axis, and means for eiecting movement of said lower carriage to cause simultaneous movement of said plate cylinder and roll toward or away from said impression cylinder and for also effecting relative movement of all of said carriages to move said cylinders relative to each other and to said roll.

`6. Printing apparatus comprising, an impression cylinder rotatable about a fixed horizontal axis, a lower carriage slidable upon a xed support toward and away from said cylinder, an intermediate carriage slidable upon said lower carriage, a plate cylinder journalled upon said intermediate carriage for rotation about a horizontal axis, an upper carriage slidable upon said intermediate carriage, an ink roll journalled upon said upper carriage for rotation about a horizontal axis, and means for eiecting either independent Yor simultaneous sliding of said carriages relative to each other.

'7. Printing apparatus comprising, an impres- :sion .cylinder rotatable about -a Yixed horizontal termediate carriage for rotation about a lhorizontal axis, an upper carriage slidable upon said intermediate carriage, an ink roll journalled upon said upper carriage for rotation about a horizontal axis, and a lever pivotally associated with all ol' said carriages for effecting simultaneous movement rof said upper and intermediate carriages relative .to each other and at different rates of speed.

8. Printing apparatus comprising, an impression cylinder rotatable about a horizontal axis, a lower carriage slidable toward andk away from said Cylinder, an intermediate carriage slidable upon said lower carriage and providing a support for a rotary plate cylinder coacting with said impression cylinder, an upper carriage slidable upon said intermediate carriage and providing a support for a rotary inkroll coacting with said plate cylinder, a lever pivotally suspended from i said lower carriage and being connected to said intermediate and upper carriages, and eccentric means for effecting swinging `of said lever to simultaneously displace said plate cylinder and said roll relative to said impression cylinder and to each other.

9. Printing apparatus comprising, an impression cylinder rotatable about a horizontal axis, a lower carriage slidable toward and away from said cylinder, an intermediate carriage slidable upon said lower carriage and providing a support axis, a lower support movable toward and away yfrom said cylinder, a plate cylinder rotatable about a horizontal axis and being' cooperable with said impression cylinder to effect printing, an intermediate support resting upon said lower support and upon which said plate .cylinder is journalled, an ink roll rotatable vabout ahorizontal axis and being cooperable with said plate cylinder to vdistribute ink thereon, an upper support resting upon said intermediate support and upon which said roll ris journalled, andf'me'ans for effecting relative movement of 'said supports to separate said cylinders and said roll.

1l. Printing apparatus comprising, an impression cylinder rotatable about a xed horizontal axis, a lower support movable toward Yand away from said cylinder, .a plate cylinder rotatable about a horizontal axis and being cooperable-with said impression cylinder to effect printingan -intermediate support resting'upon saidlower lsupport and upon which said plate-cylinderis journalled, an ink roll Vroitataloleabout a horizontal axis and being cooperable with said platehcylinder to distribute ink thereon, an upper ,support resting upon said intermedi te support and upon which said roll-is journalled, and a lever conmultaneously move said plate cylinder and roll Y axis, a lower carriage slidable upon a iixedsuprelative to said impression cylinder and to each other. Y

12. Printing apparatus comprising, an impression cylinder rotatable about a fixed horizontal axis, a lower support movable toward and away from said cylinder, a plate cylinder rotatable about a horizontal axis and being cooperable with said impression cylinder to effect printing, an intermediate support resting upon said lower support and upon which said plate cylinder is journalled, an ink roll rotatable about a horizontal axis and being cooperable with said plate cylinder to distribute ink thereon, an upper support resting upon said intermediate support and upon which said roll is journalled, a lever swingably suspended from said lower support and having upper swinging portions thereof connected to said intermediate and upper supports, and an eccentric operatively associated with the swinging end of said lever to simultaneously move said supports.

13. Printing apparatus comprising, an impression cylinder rotatable about a fixed horizontal axis, a lower support movable toward and away `from said cylinder, a plate cylinder rotatable i about a horizontal axis and being cooperable with said impression cylinder to effect printing, an intermediate support resting upon said lower support and upon which said plate cylinder is journalled, an ink roll rotatable about a horizontal axis and being cooperable with said plate cylinder to distribute ink thereon, an upper support resting upon said intermediate support and upon which said roll is journalled, a lever swingable to simultaneously move said supports, and means for effecting Variation in the relative movement of said supports by said lever.

14. Printing apparatus comprising, an irnpression cylinder rotatable about a fixed horizontal axis, a lower support movable toward and away from said cylinder, a plate cylinder rotatable about a horizontal axis and being cooperable with said impression cylinder to effect printing, an intermediate support resting upon said lower support and upon which said plate cylinder is journalled, an ink roll rotatable about a horizontal axis and being cooperable with said plate cylinder to distribute ink thereon, an upper support resting upon said intermediate support and upon which said roll is joui-nailed, a pair of laterally Yspaced simultaneously swingable levers interconnecting said supports, and means for swinging said levers in unison to produce parallel movement of said plate cylinder and roll relative to said impression cylinder and to each other.

15. Printing apparatus comprising, an impression cylinder rotatable about a fixed horizontal axis, a lower support movable toward and away from said cylinder, a plate cylinder rotatable about a horizontal axis and being cooperable with said impression cylinder to effect printing, an intermediate support resting upon said lower support and upon which said plate cylinder is journalled, an ink roll rotatable about a horizontal axis and being cooperable with said plate cylinder to distribute ink thereon, an upper support resting upon said intermediate support and .upon which said roll is journalled, a pair of laterally spaced levers pivotally suspended from said lower support and being connected to the opposite side portions of said intermediate and upper supports, and eccentric means for simultaneously ,swinging said levers to produce parallel displacement of said plate cylinder and roll relative to said impression cylinder and to each other.

16. In combination, a form cylinder, an inking mechanism therefor comprising, an ink fountain, a fountain roller revoluble therein, means for adjusting the fountain and roller together toward and away from the form cylinder, said adjusting means comprising a pair of threaded spindles, worm wheels internally threaded thereon, a, threaded shaft in operative engagement with said worm wheels, and means for turning said shaft.

1'7. In combination, an impression cylinder, a form cylinder, an inking mechanism therefor comprising, an ink fountain, a fountain roller revoluble therein, means for adjusting the form cylinder, ink fountain and fountain roller as a unit toward and away from the impression cylinder, means for adjusting the ink fountain toward and away from the form cylinder, said fountain adjusting means being operable independently of said form cylinder adjusting means.

18. In combination, an impression cylinder, a form cylinder, an inking mechanism therefor comprising, an ink fountain, a fountain roller revoluble therein, means for adjusting the form cylinder, ink fountain and fountain roller as a unit toward and away from the impression cylinder, said means including mechanism for further adjusting the form cylinder and inking mechanism as a unit at each end separately toward and away from the impression cylinder, and means for maintaining the peripheral relationship of the fountain roller and form cylinder during said adjustments.

19. In combination, a form cylinder, inking mechanism comprising an ink fountain and a fountain roller revolvable therein to deliver ink to said form cylinder, and means for simultaneously adjusting said fountain and roller toward and away from said form cylinder, said adjusting means including a pair of rotary spindles, worm wheels carried by said spindles, and a rotary shaft having screw threads in operative engagement with said worm wheels.

20. In combination, a form cylinder, inking mechanism comprising an ink fountain and a fountain roller revolvable therein to deliver ink to said form cylinder, and means for simultaneously adjusting said fountain and roller toward and away from said form cylinder, said adjusting means including a pair of rotary spindles, worm wheels carried by said spindles, a rotary shaft having screw threads in operative engagement with said worm wheels, and means for turning said shaft to simultaneously rotate said worms.

21. In combination, an impression cylinder, a form cylinder, inking mechanism comprising an ink fountain and a fountain roller revolvable therein to deliver ink to said form cylinder, means for adjusting the form cylinder and inking mechanism as a unit toward and away from said impression cylinder, and means for adjusting said ink fountain toward and away from said form cylinder, said fountain adjusting means being operable independently of said form cylinder adjusting means.

22. In combination, an impression cylinder, a form cylinder, inking mechanism comprising an ink fountain and a fountain roller revolvable therein to deliver ink to said form cylinder, means for adjusting the form cylinder and inking mechanism as a unit toward and away from said impression cylinder, and means for adjusting said fountain roller toward and away from said form cylinder, said fountain roller adjusting means being operable independently of said form cylinder adjusting means.

23. In combination, an impression cylinder, a form cylinder, inking mechanism comprising an ink fountain and afountain roller revolvable 24. In combination, an impression cylinder, a

form cylinder, inking mechanism comprising an ink fountain and a fountain roller revolvable therein to deliver ink to said form cylinder, means for adjusting the form cylinder and inking mechanism as a unit toward and away from said impression cylinder, and means for adjusting said fountain roller toward and away from said form cylinder, said fountain roller adjusting means being operable either simultaneously with or independently of said form cylinder adjusting means.

25. In combination, an impression cylinder, a form cylinder, inking mechanism comprising an ink fountain and a fountain roller revolvable therein to deliver ink to said form cylinder, and means for adjusting the form cylinder and inking mechanism as a unit toward and away from said impression cylinder, said adjusting means including mechanism for further adjusting said form cylinder and inking mechanism at each end independently toward and away from said impression cylinder.

26. In combination, an impression cylinder, a

Vform cylinder, inking mechanism comprising an ink fountain and a fountain roller` revolvable therein to deliver ink to said form cylinder, means for adjusting the form cylinder and inking mech-A anism as a unit toward pression cylinder, said adjusting means including Amechanism for further adjusting said form cylinder and inking mechanism at each end independently toward and away from said impression cylinder, and means AforV maintaining the peripheral relationship between said fountain roller and form cylinder during said adjustment.

27. In combination, an impression cylinder, superimposed carriages movable along parallel planes toward and away from said cylinder, a form cylinder journalled for rotation upon one of said carriages and normally coacting with said impression cylinder, an ink transfer roller journalled vfor rotation upon the other of said car-V riages and normally coacting with said form cylinder, means for simultaneously moving said carriages relative to said impressioni cylinder and relative to each other to separate said cylinders from each other and said form cylinder from said roller, and means for independently moving' said carriages relative to said impression cylinder and relative to each other. Y

28. In combination, an impression cylinder, lower and upper carriages movable along parallel planes toward and away from saidcylinder, a form cylinder rotatably journalled upon said lower carriage and normally coacting with said impression cylinder, an ink roller mounted upon said upper carriage and normally coacting with saidform cylinder, and means'for either indef pendently or simultaneously moving said carriages relative to said impression cylinder and relative to each other to separate said cylinders from each other and said form cylinder from.

said roller.

GEORGE O. FROSTAD. RAYMOND J. NEBEL.

and away from said im=

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