US3136462A - Dispenser for liner-wound adhesive tape - Google Patents

Description

June 9, 1964 K. B. KNUTSON DISPENSER FOR LINER-WOUNDADHESIVE TAPE 2 Sheets-Sheet 1 Filed May 1, 1961 Fig.5

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June 9, 1964 B. KNUTSON 3,136,462

DISPENSER FOR LINER-WOUND ADHESIVE TAPE Filed May 1, 1961 2 Sheets-Sheet 2 INVENTOR Ker-unit SB. Kali C5011. 76

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United States Patent 3,136,462 DISPENSER FGR LlNER-WOUND ADHESKVE TAPE Kermit R. Knutson, 1316 E. 24th St, Minneapolis 4, Minn. Filed May l, 1961, Ser. No. 106,616 3 Claims. (@l. 225-24) My invention relates to improvements in dispensers for dispensing double-coated liner-wound pressure-sensitive adhesive tape.

Tape of this type, adhesively coated on both sides, is marketed in various widths, a length of the tape being wound in a roll on an annular core together with a liner interposed between the convolutions of the tape.

An object of this invention is to provide an improved, relatively simple, durable and inexpensive dispenser for such tape which will conveniently receive a supply roll of the tape of any conventional width and support it for rotation to enable the tape to be withdrawn from the roll in desired lengths.

A further object of the invention is to provide a dispenser, as aforesaid, having a take-up drum for the liner and driving means for said drum driven by the advancing tape, the drum being adapted to strip the liner from the advancing tape and wind the stripped liner thereon.

Another object of the invention is to provide in the driving means for the liner take-up drum a drive roller for frictional contact with the tape and gearing between said drive roller and drum for turning the latter.

Another object of the invention is to provide a guide roller disposed relative to the drive roller so that the tape may be drawn from the supply roll about said guide roller and then about the drive roller in a sepentine path and, further to provide a relationship between the liner take-up drum and said guide roller and drive roller, whereby said drum will wind the liner thereon pulling it angularly relative to and stripping it from the tape at a point between said guide roller and drive roller.

An additional object of the invention is to provide in a dispenser, as above indicated, a juxtaposed relationship between the guide roller and drive roller, whereby the run of the tape therebetween will be relatively short and firm against the liner-stripping pull of the liner thereon.

Another object of the invention is to provide a cutter blade about which the tape is passed for its severance, the disposition of said blade relative to the drive roller being such as to continue the serpentine form of the path of the tape forwardly of the drive roller, thereby to enhance the maintenance of frictional contact between the tape and said drive roller.

A further object of the invention is featured in the interposition of an applicator roller in the path of the tape between the drive roller and cutter knife for application of the advancing tape to the surface of an object, a related objective being to provide the dispenser with a guide for an object to which the advancing tape is being applied.

Another object of the invention is to provide driving means between the drive roller and liner take-up drum of such construction that the peripheral travel of the drum will slightly exceed the peripheral travel of the drive roller, thereby to compensate for stretching of the stripped liner with but little slippage of the tape on the drive roller.

Additionally, it is an object of the invention to provide a liner take-up drum of relatively large diameter in relation to the amount of liner to be wrapped on said drum from the tape supply roll, thereby to minimize the building up of the liner on said drum and thus to minimize the increasing power requirements of the take-up drum as well as slippage of the tape on the drive roller.

Other objects of the invention reside in the novel combination and arrangement of parts and in the details of construction hereinafter illustrated and/or described.

in the drawings:

FIG. 1 is a side elevational view of a tape dispenser constructed in accordance with my invention.

FIG. 2 is a vertical sectional view taken as on theline 22 of FIG. 1.

FIG. 3 is a front elevational view of the structure shown in FIG. 1.

FIG. 4 is a plan view of the structure shown in FIG. 1.

FIG. 5 is a vertical sectional view taken as on theline 55 of FIG. 2.

FIG. 6 is a fragmentary view in detail of the inner end of the liner take-up drum.

FIG. 7 is a fragmentary view in detail showing the construction of the drum-driving sprocket.

FIG. 8 is a fragmentary side elevational view of a modified form of the invention including an applicator roller over which the stripped tape runs en route to the cutter blade.

FIG. 9 is a plan view of the construction shown in FIG. 8.

The form of dispenser illustrated in FIGS. 1 to 7, inclusive, includes aframe 10 of sheet metal, said frame including an upstanding mounting panel 11 and abase plate 12 extending outwardly from said panel. Extending rearwardly from the rear marginal portion of the mounting panel 11 is anarm 13 having an outwardly bent terminal portion providing aspindle 14 for a supply roll oftape 15, wound on anannular core 16. Saidarm 13 is fastened to the mounting panel 11 for pivotal adjustment thereon by means of abolt 17 extending through botharm 13 and panel 11 and fitted with awing nut 18 turned against the inner side of said panel 11. Fixed at its inner end to the mounting panel 11 and extending outwardly from said panel forwardly of thespindle 14 is astud 19 on which a liner take-up drum A is revolubly mounted. Saidstud 19 is a length of round rod having a threaded end extending through the panel 11 and fitted withclamping nuts 20, 21 which bear against the inner and outer sides, respectively, of said mounting panel 11. The takeup drum A includes a pair of drum heads a each having acenter web 22 with acentral opening 23 therein of the same diameter as that of thestud 19 and adapted to receive said stud. Each drum head a also has aperipheral flange 24 and anannular shoulder 25 between theweb 22 and flange 24-, theannular shoulder 25 fitting snugly into one end of acylindrical body 26 consisting of a length of tubing, saidbody 26 being secured to said shoulder 25' as by means of a suitable adhesive. Theperipheral flange 24 of the drum head a at the inner end of the drum A bears against the end of thedrum body 26. Theperipheral flange 24 of the drum head a at the outer end of said drum A bears against anannular flange 27 which encircles theshoulder 25 of said head a edgewiseand bears sidewise against the outer end of saidbody 26 of the drum. The drum A is held inwardly on thestud 19 by means of anabutment cap 28 of resilient material applied to and releasably gripping the outer end of saidstud 19.

Above the take-up drum A is a drive roller B extending outwardly from the mounting panel 11. Said drive roller B consists of a bushing 29 and a coveringsleeve 30 therefor of plastic material secured thereto, the inner end of said bushing 29 extending beyond saidsleeve 30 and having a drive sprocket 31 fixed thereto. Said drive roller B is revolubly mounted on aheaded bolt 32 extending through the mounting panel 11 with thehead 33 of said bolt abutting the outer end of the bushing 29 and with the inner threaded end of saidbolt 32 extending through the mounting panel 11. Clampingnuts 34, 35 on said threaded end of saidbolt 32 at the inner and outer sides,

respectively, of the mounting panel ill secure thebolt 32 to said panel.

The drive sprocket 31 of the drive roller B is connected by achain 36 with a drivensprocket 37 revoluble on the stud l? on which the take-up drum A turns. Said drivensprocket 37 is shown as a laminated structure consisting of two disc like members b welded together, saidmembers 12 being oppositely offset centrally thereof to provide relatively spacedhub portions 33 each of which has akey opening 39 therein formed by a bore provided with a branch key way Akey 41 consisting of asplit sleeve 42 with outwardly turnedlips 43 is fitted in saidkey openings 39 in thesprocket 37 and is suitably secured as by welding or otherwise to themembers 12 of said sprockets. Said key 41 rotates with thesprocket 37, thesleeve 42 of the key revolubly receiving thestud 19 and turning thereon; The inner head a of the take-up drum A has aboss 44 centrally thereof, the same being formed with an axial key opening 45 having a branchkey way 46. Saidkey opening 45 receives the outer end portion of the key sense 4-1 which projects from the drivensprocket 37 with the result that the rotation of saidsprocket 37 is imparted to the take-up drum A.

Rearwardly of the drive roller B is an idler guide roller C which is similar to said drive roller B in construction and mounting. Said guide roller C includes abushing 47 and asleeve 43 thereon, thebushing 47 being journaled on a headedbolt 49, thehead 59 of said bolt abutting the outer end of thebushing 47 while the threaded end of saidbolt 49 extends through the mounting panel 11 and is fitted withclamping nuts 51, 52 which engage opposite sides of said panel 11.

Forwardly of the drive roller B is acutter blade 53 for severance of the tape drawn from thesupply roll 15. A pintle 5h extending outwardly from the mounting panel 11 carries thecutter blade 53. Saidblade 53 is attached to saidpintle 54 by means of asplit sleeve 55 thereon, said sleeve having opposedlips 56 and being spot welded or otherwise suitably secured to thepintle 54 opposite saidlips 56. Theselips 56 receive theblade 53 therebetween yieldingly gripping and holding said blade in place with itscutting edge 53* facing forwardly beneath the level of the upper side of saidsleeve 55, such side of said sleeve providing a holding surface for thetape 15* after and While an extended terminal portion of said tape is severed by downwardly tensioning such tape portion against thecutting edge 53 ofsaid blade 53.

A drum D on the spindle l4 revolubly supports therein thetape supply roll 15. Said drum D includes a pair of drum heads d, each having acenter web 57 with anaxial bore 58 therein for the reception of the spindle. Each drum head (2 has anannular shoulder 59 and apcripheral flange 69 extending therefrom. Theshoulder 59 of each drum head d is received within thecore 16 of itstape supply roll 15 at one end of the core with the peripheral flange 60 extending from such shoulder abut ting such end of the core. Twocollars 61, 62 on thespindle 14 at opposite sides of the drum D abutt thecenter webs 57 of their respective drum heads d and hold them in roll supporting relationship. Saidcollars 61, 62 are of resilient material yieldingly gripping thespindle 14 and are capable of adjustment along said spindle in accommodation of tape supply rolls of varying length.

Thespindle 14, guide roller C, drive roller B,cutter blade 53 and take-up drum A parallel each other and are coextensive. The top of the guide roller C is above the gottom of the drive roller B and so also is the cutter blade Thetape supply roll 15 is mounted on thespindle 14 through the medium of the drum D in such end-for-end thence over thecutter blade 53. The partedliner 15 is led to the take-up drum A and rendered secure relative thereto by inserting the terminal portion of theliner 15 edgewise into akerf 63 formed in thedrum body 26 circumferentially thereof.

At the surface of thedrum body 26, the said terminal portion of theliner 15 is twisted into position fiatwise of said drum body, the twisted portion of the liner being caught in the trailing end oftherkerf 62 and thus held by the subsequent wrap of the liner ISP on saiddrum body 26.

With the guide roller C, drive roller B andcutter blade 53 staggered relative to each other, thetape 15 following the same in a serpentine path will frictionally engage the drive roller B and turn it clockwise as seen in FIG. 1. Said drive roller B being geared to the take-up drum A as aforesaid, said drum A will likewise turn in the same direction stripping theliner 15" from the tape l5 while leading it angularly away from the tape at a point in the short run thereof between the juxtaposed guide roller C and drive roller B.

The gear ratio between the drive roller B and the liner take-up drum A is desirably such that the drive roller B will turn several times to one turn of the take-up drum A and the diameter of said liner take-up drum will be relatively large and such that its peripheral travel slightly exceeds that of the drive roller B. By this arrangement the take-up drum A will compensate for any stretching of theliner 15* after it is stripped from thetape 15 It is further desirable that the take-up drum A be of relatively large diameter in relation to the amount of tape liner to be wrapped on the take-up drum A from thetape supply roll 15, since the larger the diameter of the drum A the less theliner 15 will build up thereon and the less will be the increase in the power requirement of the take-up drum and the less will be the slippage of thetape 15* on the drive roller B.

More or less slippage of thetape 15 on the drive roller B occurs intermittently in compensation for the gain in peripheral travel of the take-up drum A over the peripheral travel of the drive roller B. 'Such slippage is enhanced by theliner 15 as it is parted from thetape 15 and winds up on the drum A, the enhancement of such slippage making for uniformity in the exertion of force required to draw the tape from the dispenser. As theliner 15 is stripped from thetape 15 and wound up on the drum A, it pulls on the tape in a direction tending to draw the tape away from the drive roller and reduce its area of frictional contact with the periphery of said roller. Thus, compensating slippage of thetape 15" on the drive roller B, is facilitated.

To remove from the drum A thetape liner 15 wrapped thereon, said drum A is removed from thestud 19 following the removal of theabutment cap 28 from said stud. Thereupon the convolutions of theliner 15 may be slipped oil of thedrum body 26 at its inner end.

' In the modified form of my invention shown in FIGS. 8 and 9, thecutter blade 53 is carried by anarm 64 extending forwardly from the mounting panel 11. Occupying the blades position on said panel 11 is an idler applicator roller E. Similar to the construction and mounting of the idler guide roller C, the applicator roller E includes a bushing 65 with a coveringsleeve 66 thereon, the bushing 65 being journaled on a headedbolt 67 which is secured to the mounting panel 11 by inner andouter clamp nuts 68, 69. The inner threaded end of thebolt 67 extends through the rear end of said blade-supportingarm 64 and saidnuts 63, 69 clamp thearm 64 in place. Included in the frame It is aplate 68 which extends outwardly from the mounting panel 1 1 above the drive roller B and guide roller C. Thisplate 68 protects said drive roller B and guide roller C and serves as a table to slidably support asheet 69 or other object as it is contacted with thetape 15 at the point ofits overrun of the applicator roller. E, and also as said object is advanced with the moving tape in effecting the applicationof the tape to the object. On thetable plate 68 is aguide 76 for objects to be moved along saidplate 68 and over the tape on the applicator roller E. Said guide 70 includes a platelike bed member 71 and aguide flange 72 upstanding therefrom. Saidguide 70 may be releasably held in adjusted positions on thetable plate 68 by pieces of the double-coated tape (not shown) applied to the bottom of the bed member 71 of the guide 7%, which pieces of tape, in turn, adhere to the upper surface of saidtable plate 68.

Thedrive sprocket 31 for the drive roller B and the drivensprocket 37 for the take-up drum A and thechain 36 overrunning said sprockets are preferably encased by ahousing 73 formed from a piece of sheet material. This housing has an upright outwardly facingpanel 74. Inturned from saidhousing panel 74 forwardly thereof is an offset 75 having thereon a forwardly-turned attachingflange 76. And, inturned from saidhousing panel 74 rearwardly thereof is an offset 77 having thereon a rearwardly turned attachingflange 73. These attachingflanges 76, 78 bear against the mounting panel 11 of theframe 10, the rearwardly disposedflange 76 being secured to said mounting panel 11 by thebolt 17 andwing nut 18 employed in attaching thespindle arm 13 thereto. The forwardly disposed attachingflange 78 is secured at the top thereof to the mounting panel 11 by the cutter-blade pintle 54 and clamp nuts '79, 8t) thereon which secure saidpintle 54 to the mounting panel 11, there being anadditional screw 81 fastening the lower portion of said attachingflange 78 to said mounting panel 11.Openings 82, 83 and 84 in the housing panel '74 receive the inner end portions of thedrive roller 13, guide roller C and drumboss 44, respectively.

Changes in the specific form of the invention, as herein described, may be made within the scope of what is claimed without departing from the spirit of the invention.

Having described the invention, what is claimed as new and desired to be protected by Letters Patent is:

1. In a dispenser for dispensing tape from a roll of double-coated liner-wound pressure-sensitive adhesive tape, a frame, a spindle mounted thereon for revolubly supporting a supply roll at the rear of said frame, a liner take-up drum revolubly mounted on the frame forwardly of said spindle, a drive roller revolubly mounted on the frame above said take-up drum, a guide roller revolubly mounted on the frame rearwardly of the drive roller, a cutter blade mounted on the frame forwardly of said drive roller, said spindle, take-up drum, drive roller, guide roller and cutter blade being coextensive with each other, the top of the guide roller and the cutter blade being higher than the bottom of the drive roller, the guide roller being adapted to support a run of tape drawn thereover with the liner lowermost from the supply roll on the spindle, the drive roller being adapted to be underrun and frictionally turned by the tape led thereto from the top of the guide roller and led therefrom to the cutter blade for severance of the tape by said blade, drive means connecting the drive roller with the liner take-up drum, said drive means imparting peripheral travel to said takeup drum in excess of that of the drive roller, said take-up drum being adapted to wrap thereon the liner of the advancing tape, stripping the liner from the tape by leading the liner angularly downwardly and rearwardly from the tape at a point adjacent the drive roller between it and the idler roller, thus pulling the liner in a direction tending to draw the tape away from the drive roller and reduce its area of frictional contact therewith, thereby to facilitate compensating slippage between tape and drive roller.

2. A dispenser, as defined in claim 1, wherein the guide roller and drive roller are juxtaposed, whereby the run of tape between said rollers is relatively short and firm against the pull of the liner on the tape as said liner is stripped from the tape by the take-up drum.

3. In a dispenser for dispensing tape from a roll of double-coated liner-wound pressure-sensitive adhesive tape, a frame, a spindle mounted thereon for revolubly supporting a supply roll of the tape, a drive roller and a cutter blade all mounted coextcnsively with each other on the frame and relatively positioned so that tape drawn from the supply roll tothe cutter blade will have an area of contact with the drive roller peripherally thereof for frictionally turning the same as the tape is advanced, a liner take-up drum revolubly mounted on the frame, drive means connecting the drive roller with the liner take-up drum, said drive means imparting peripheral travel to the take-up drum exceeding that of the peripheral travel of the drive roller, said take-up drum being adapted to wrap thereon the liner of the advancing tape, stripping the liner from the tape, pulling the liner in a direction tending to draw the tape away from the drive roller and reduce its area of frictional contact therewith, thereby to facilitate compensating slippage between tape and drive roller.

References (Jited in the file of this patent UNITED STATES PATENTS 2,275,858 Mallard Mar. 10, 1942 2,325,400 Hoover July 27, 1943 2,652,115 Mysels Sept. 15, 1953 2,708,076 Polster et al. May 10, 1955 2,720,262 Hanson Oct. 11, 1955 2,743,064 Le Febvre et al Apr. 24, 1956

Claims (1)

1. IN A DISPENSER FOR DISPENSING TAPE FROM A ROLL OF DOUBLE-COATED LINER-WOUND PRESSURE-SENSITIVE ADHESIVE TAPE, A FRAME, A SPINDLE MOUNTED THEREON FOR REVOLUBLY SUPPORTING A SUPPLY ROLL AT THE REAR OF SAID FRAME, A LINER TAKE-UP DRUM REVOLUBLY MOUNTED ON THE FRAME FORWARDLY OF SAID SPINDLE, A DRIVE ROLLER REVOLUBLY MOUNTED ON THE FRAME ABOVE SAID TAKE-UP DRUM, A GUIDE ROLLER REVOLUBLY MOUNTED ON THE FRAME REARWARDLY OF THE DRIVE ROLLER, A CUTTER BLADE MOUNTED ON THE FRAME FORWARDLY OF SAID DRIVE ROLLER, SAID SPINDLE, TAKE-UP DRUM, DRIVE ROLLER, GUIDE ROLLER AND CUTTER BLADE BEING COEXTENSIVE WITH EACH OTHER, THE TOP OF THE GUIDE ROLLER AND THE CUTTER BLADE BEING HIGHER THAN THE BOTTOM OF THE DRIVE ROLLER, THE GUIDE ROLLER BEING ADAPTED TO SUPPORT A RUN OF TAPE DRAWN THEREOVER WITH THE LINER LOWERMOST FROM THE SUPPLY ROLL ON THE SPINDLE, THE DRIVE ROLLER BEING ADAPTED TO BE UNDERRUN AND FRICTIONALLY TURNED BY THE TAPE LED THERETO FROM THE TOP OF THE GUIDE ROLLER AND LED THEREFROM TO THE CUTTER BLADE FOR SEVERANCE OF THE TAPE BY SAID BLADE, DRIVE MEANS CONNECTING THE DRIVE ROLLER WITH THE LINER TAKE-UP DRUM, SAID DRIVE MEANS IMPARTING PERIPHERAL TRAVEL TO SAID TAKEUP DRUM IN EXCESS OF THAT OF THE DRIVE ROLLER, SAID TAKE-UP DRUM BEING ADAPTED TO WRAP THEREON THE LINER OF THE ADVANCING TAPE, STRIPPING THE LINER FROM THE TAPE BY LEADING THE LINER ANGULARLY DOWNWARDLY AND REARWARDLY FROM THE TAPE AT A POINT ADJACENT THE DRIVE ROLLER BETWEEN IT AND THE IDLER ROLLER, THUS PULLING THE LINER IN A DIRECTION TENDING TO DRAW THE TAPE AWAY FROM THE DRIVE ROLLER AND REDUCE ITS AREA OF FRICTIONAL CONTACT THEREWITH, THEREBY TO FACILITATE COMPENSATING SLIPPAGE BETWEEN TAPE AND DRIVE ROLLER.

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