Патент USA US2407642код для вставки
Sept. 17, 1946. A. A. ANDERSON 2,407,641 _ ADHESIVE TAPE DISPENSER AND'APPLIER Filed Jan. 10, 1945 ' 4 Sheets-Sheet 1 Sept. 17, 1946. A. A. ANDERSON ' 2,407,641 ADHESIVE TAPE DISPENSER AND APPLIER Filed Jan. 10. 1945 w \F21 4 Sheets-Sheet 2 Sept-17,1946 ‘ . A. A. ANDERSON . 2,407,641 -ADHESIVE TAPE DISPENSER AND APPLIER Filed Jan.- 10,1945 4 Sheets-Sheet s " 51 Q _ ‘ CA9 a ' I I Attorrz - Sept. 17, 1946. I A. A. ANDERSON I ’ 2,407,541 ADHESIVE TAPE DISPENSER AND APPLIER Filed Jah. 10, 1945 Q,» A14’, 5 ~40 ' 1 44" I I - 4 ‘Sheets-Sheet 4' Patented Sept. 17, 1946 2,407,641 UNITED STATES PATENT OFFIQE 2,407,641 'ADHESIVE TAPE DISPENSER AND APPLIER ‘ Arthur A. Anderson, Rose Township, Ramsey County, Minn., assignor to Minnesota Mining & Manufacturing Company, St. Paul, Minn., a corporation of Delaware 1 Application January 10, 1945, Serial No. 572,223 10 Claims. 1 (Cl. 216-429) . This invention relates to an object-powered pressure-sensitive adhesive tape dispenser and applier which utilizes the driving power of the moving objects to which the tape is applied for operating the dispensing mechanism. Each op eration of the applier results in the automatic positioning of a piece of tape ready for applica tion to the next object. The preferred embodiments utilized the “cutter , 2 v ‘ between the feeding means and the applier, whereby the object-impelled applying stroke of the applier performs the heavy work of feeding (withdrawing and cutting) while the lighter task of positioning the severed tape is done later by a spring-impelled return stroke of the applier. This permits the ?nal positioning of a succeeding piece of tape to be delayed until the preceding object is clear of the machine and at the same wheel” type of tape dispenser broadly described 10 time keeps the main load from being thrown onto and claimed in my co-pending application Ser. No. 400,143, ?led June 27, 1941; and employ an improved means for rendering the cylindrical a spring. v The ‘invention is not limited to ‘the preferred embodiments, the scope of the invention being set forth in the claims. anvil resiliently yieldable. The said application describes an automatic tape dispenser and applier 15 The speci?c‘machine that is described and illustrated in the following description and draw combination which was broadly claimed in my ings as illustrative of my invention, is a portable divisional application Ser. No. 516,717, since manually operated automatic pressure-sensitive issued as Patent No. 2,363,277 on November 21, adhesive tape’ dispenser and applier, particularly 1944. The combination therein speci?cally illus trated and described is powered by an electric 20 suited for use in stores, shipping rooms, factories, ' etc., for the rapid taping, sealing and/or labeling motor. The present device does not require a of the edges of boxes, bags, packages, and other motor‘since it is mechanically driven by the ob objects. jects to which the tape is applied, and in conse In the accompanying drawings and description, quence is cheaper to manufacture and to operate, and can be used in places where electric power 25 the end of the machine at which the operator stands when facing the machine to operate it is is not available. An object-powered pressure-sensitive tape dis penser and applier is described ‘in Reissue Patent Re. 22,418, granted on January 11, 1944, in which the power supplied by the moving object is uti lized to load a spring whichthus stores up power during the applying operation, and this is sub sequently released and utilized to drive the dis called the front, and the terms “right” and “left” are from the point of view of such operator. Figure 1 is a perspective view of the front, left and top of the machine with the upper portion of the casing removed, its normal position being shown in dotted lines. Figure 2 is a plan view with the upper portion pensing mechanism. of the casing removed. In contrast, the present invention does not utilize a spring drive for with drawing'the tape from the supply roll, but em ploys a direct power transmission so as to cause tape to be withdrawn from its roll and advanced during the application of a previously severed piece of tape to the object and while such object is in motion. The present arrangement has a number of advantages. , , . Figure 3 is a left side elevation with the'left side of, the casing removed, showing the position of the parts when tape is ready to‘be applied to an object. Figure 3a is a radial cross-section of the cutter wheel inthe position which it occupies in Fig ure 3. ' , Figure 4 isa left side elevation with the tape ' The preferred embodiments of the present in supply holding drum and the left ‘side of the‘l vention include means for‘feeding a piece of tape‘ ‘ casing removed, showing the position of the parts ’ and positioning it in applying position, a swing 45 immediately after tape has been applied to an 7 ing applier movable in response to the movement ' of the object being taped, and connecting means between the applier and the feeding means whereby the initial ' objecteimpelled applying stroke or'movement of the applier directly drives the feeding means which withdraws tape from a supply roll and severs it. Provision is made object. ‘ .‘ , V H Figure 5 is a vertical longitudinal. sectiontaken on the line ‘5-—5 in Figure 2. Figure'6 is a vertical cross-section taken on the lines 6-—-6 in Figure 5.‘ Figure '7 is a front elevation with the front of the casing removed. for tape positioning means in addition to ‘the Figure 8 is a right side elevation with‘the right feeding means, and for separate connections be tween the‘ positioning means‘and the applier and. 55 ‘side of the casing removed. 52,407,641 '> . 3 Figure 9 is a radial axial section of the anvil means against the right face of the wheel 25. roller taken on the line 9—9 in Figure 3. The unit-carrying shafts 2'! are made ‘to extend Figure 10 is a radial cross-section of the anvil slightly beyond the said right face of the wheel roller taken on the lines I0—l0 in Figure 9. 25, and the ?ngers 33a press against the ends of Figure 11 is a radial cross-section through the 5 the shafts and thus serve as a braking means to cutter wheel shaft taken on the lines ll—l I in prevent inadvertent turning of the shafts and Figure 6 with the gear 52 removed. * ' units (such as might be caused by the weight of Figure 12 shows two machines with their tops a unit 28) after the cams have turned the unit facing each other in position to tape an object to a desired position, e. g., to dispensing position.v on two edges at one stroke. . 10 ' By “dispensing position” is meant the position Figure 13 is a perspective viewof the under occupied by a unit when it is turned so as to serve side of a box to which pieces of‘ tape‘ have been as a projecting means, holdingand positioning applied about its lower edges bya machine em a severed piece of tape outwardly from the wheel bodying the present invention." (like the unit which holds the piece T—l in A casing 2 I, having a hinged upper portion2 la,v 15 Figure 3a). By “cutting position” is meant the position occupied by a unit when its edge as will, upon being turned past the anvil 26, contact the extend from side to side of the casing" and‘sup anvil so as to sever the tape (like all the units port the machine frame 23. ‘ l in Figure 3a except the unit holding the piece A tape rollholder drum 24 is rotatably mounted encloses the working parts and it also serves to support them by means of rigid shafts 22 which T—l). at the, rear of the frame23 for holding- a supply roll R _of normally tacky and pressure-sensitive adhesive tape T, such as that sold under the trade-mark “Scotch.” ‘ ' . The anvil member or roller 26 is journaled on a shaft 35 which is ?xed tothe frame 23 for wardly of the wheel 25. The shaft is ?xed at such an angle that the cutting edges 2: contact the roller 26 point by point along their length as the wheel 25 turns them successively past it. The right hand portion 35a of the shaft 35, which, is frictionally held within a suitable bore in the frame 23, is of a larger diameter than the shaft r - In the present embodiment, the tape is with drawn from the supply roll and advanced to wards, the applying position byreason of its tem porary adherence to a series of tape-gripping surfaces or grippers which are carried by the rotatably mounted draft wheel 25; and it is 30C 35 and eccentric with respect thereto so that a slight turning of it permits positional adjustment alsorcarried by the wheel, when the tape is of the roller 26 with respect to the wheel 25. The severed by a series of cutting edges ac, which are pressedrbetween one of the edges and an anvil member 26 that is located adjacent the wheel. roller 26 is preferably positioned at the most rear ward point to which it is required to be during a’ -A plurality of shafts 2'! (there are four in the 35; present embodiment spaced 90° apart) are jour naled in the wheel’s peripheral portion parallel withythe wheel's axis. To each shaft is ?xed a‘ cutter-gripper unit 28, each unit holding a blade cutting operation. 29 having a cutting edge :1; and a tape-gripping surface a, and each unit being shaped to form a second tape-gripping surface I) in line with a.’ The grippers a and b releasably hold the tape by adhesive contact. Either end of the shaft 35-3504 may be suitably shaped or slotted so as to permit turning the shaft by a wrench, screw driver, etc., to a desired position, whereupon set screws 42 may be employed to'?x it against 40; further turning. The roller 26 is an assembly comprising a sleeve 36 which forms the working surface of the roller, a second sleeve 31 of resilient material, such as rubber, within the sleeve 36 and concentric there The tension on the tape asnit is being with 45, with, and a flanged shaft 38 on which the sleeves drawn from the supply roll R by the pull of the are ?xed, the outer or left hand flange 39 being wheel 25 may cause it to press against the tape removable to permit mounting and dismounting gripping surfaces It and b sufficiently to attain the sleeves 36 and 31 for replacement and/or resurfacing. The ?ange may be held by threaded ’ the desired degree of adherence thereto, but if atmospheric or other conditionsrequire a greater 50 vengagement with the shaft 38 and locked with a pressure to be exerted, a pressing member may be lock nut 40. 'The shaft 38 is axially bored to employed to press the tape more ?rmly against permit it to be journaled on the‘ ?xed shaft 35 the grippers. Such pressing member may be a where it may be held in place by a suitable'cotter‘ roller 38 of resilient material such as rubber, pin 4|. The inner or cushion sleeve 31 is prefer rotatably mounted adjacent the wheel 25 in such 55 ably su?iciently yieldable to permit the outer‘ a position that it presses against the. grippers, a sleeve 36 to be forced forwardly by the pressure or aand b, successively, as the ‘wheel turns them of an edge a: during a severing operation to the past the roller. Another means‘ for increasing most forward position which the working surface the gripping power of the surfacesa and his to 36 of the roller 26 is required‘ to occupy during such operation, and sufficiently resilient or re sistant during an entire cutting operation to per mit the sleeve 36 to function as an anvil against enlarge their areas. This maybe done even to‘ 60 the extent of ?lling in the space betw‘een'them completely so that they join or combine to form' one continuous surface; and still further ad surface‘ slightly convex._ ' - On the left or outer end of each cutter-gripper '. shaft .21 is ?xed a cam 3|, by which the cutter-l’ gripper’u'nits are turned (in a manner herein after described) from cutting to ‘dispensing posi which an edge a: on the wheel 25 may press the Thus the sleeve 36 is nor- , 65 mally concentric with the entire roller assembly hesion will ‘result fromfmakingsuch a combined ~ tape so as to cut it. 26,_but eccentric with respect thereto during a cutting operation. > ' _ 7 ,To the ,rear of the draft-cutter-feed wheel 25, anarm 44 is ?xedat its lower end to a shaft 45‘ tion and vice versa, the ‘amount ‘of such turns 70 thatlis journaled in the frame;23.' The free end , of the arm carries'a Dresser 'in'the form of a pins 32 that are ?xed to' the side of the wheel 25, sealing roller 46 rotatablyv mounted thereon, andvv one adjacent each cam. ' ' ‘ may be curved or otherwise suitably shapedv to being limited to the correct distance by the stop A'spring washer 33 havinggfour radially ‘ex tending ?ngers 33a (Figure 11) is held‘by'suitable enable it to clear the object being sealed as the "latter impels the arm through its trearwarid?sor gnome-4.1; 5 initial. stroke. a. suitable stop; such as the" rib 23a. of the frame 23-: maybe provided so as‘ to‘ halt the forward‘. swing of: the. arm. 44 at such‘ a‘ point. that the sealing: roller 46, or at least‘ the‘ aids} thereof, is slightly above the casing top 2111; a suitable opening 210‘ being" provided‘ therein through: which the‘ arm. may extend. pin 63.. The: rearward: movement ofv the sealing‘ roller‘ arm 44" (i._ e'., the: applying‘ stroke: in a seal ing operation) is transmitted through its“ shaft 45, the army 64, the‘: shaft65, the arm 66 and the shaft 6|“ (Figure. 8') to‘- turn the‘. arm' 62 from its normal‘ cam-tripping position (shown in Figure 3') to its‘open position. (‘shown inFigureA) Upon In. operation‘; the arm’ and the presser 46’ are the return stroke‘ of the arm 44 the movementis pushed? rearw'ardly and downwardly (Figure 4‘) reversed, during which the pin6'3' strikesthe cam by the; pressure of the‘; object B against the presser 10 31 of the’ unit 28? thenat the dispensing‘ station, or'sealing; roller 46' asithe: object isrbeing propelled thereby raising the‘ unit from‘. cutting to dispensi rearwardly through the machine during. a seal ing position. Alternatively‘, the pin‘ 63’ may be rendered ?xed‘ by removing the: arm 65 and‘ setting ing. operation‘; This is termed herein “the apply ing stroke” or “applying; movement” of the arm the set-screw 6T, whichv will cause the units 28' or of. the presser. After the object‘ has passed 15 as they approach the! dispensing. station to be turned up‘ during the applying stroke; of the arm‘ over the presser 46.,‘ spring means (hereinafter 44? and‘ thus position‘ the succeeding piece o'f'ta‘p'e described)~ returns the- arm and presser to their normal-positions, through: what is termed herein in response to the. arm’s. applying stroke without. waiting for the return. stroke. their “return stroke” or “return movement.” The: object-powered impulse of the applying 20 A. plate 63', suitably ?xed to the ?xed shaft'sa. stroke is transmitted to the: wheel 25 through (l8 and. 60; as'lby nuts 6.9. and T0,.holds a. cam pin ‘E! on its inner face in position to strike the cams suitable gears 50, 5| and 52. A one-way clutch 3! as they pass, and turnthe units 28 from dis means (hereinafter described)‘ in the‘ head of the p‘ensing to cutting position. An are: shaped slot; frame connecting. the gear 52‘ and’ the wheel 25, ??wi's provided in the plate‘ 58 so asto accommo permits rotation of thewheel 25>0n1y in a counter_ date the pin 6~3land permit‘ it‘ to extend from the clockwise (Figures: 3 and 5) direction, the gear inner face of the oscillating arm 62: through the 52 idling when turning in the other direction plate 58; to cam engaging position; during the return stroke of the arm 44-. The arm is; returned and the entire mechanism reset by Mode of‘ operation the reset spring 53’ which impels the gear 5| 30 An object such- as the box: B to' be. sealed or counter-clockwise (Figures 5 and 6). taped in the manner shown in' Figure 13%, is pro Referring to'Figures 5' and 6, the said one-way pelled across the top 2-l-lb- of the casing 21 from clutch means comprises a ratchet wheel 55 that front (Figure 3) to back (Figure: 4-). When the‘ is. journaled within the’ gear 52 and ?xed on a adhesive Side of the piece of pressure-sensitive projecting, portion of. the hub 25a of the dispens adhesive tape. T--i, held in. applying: position‘. ing wheel 25. Four notches55ar (one for each unit (thrust upwardly through- the opening. in. the 28) occur 90° apart in the periphery of the ratchet casing top‘ in the path of the box)1 by a unit 28,.v wheel. 55‘. A ratchet pin 56 is rotatably held in is contacted ‘by the leading. face- of the advancing asuitable bore in the gear 52 parallel to the com box and thereby pressed against the upper seal mon axis of. the wheels 25-, 55 and 52. The pin ing roller 46, the piece adheres‘ to the box and is 56' is located. so that a portion of its, cylindrical thereby removed from the unit 28 where it had side. surface would project inwardly beyond the been held by temporary adhesive contact there inner. surface of the gear 5-2., but the side of. the with. As the box continues to advance against pin is ?attened (560.) along its full length so that it does notnormally so project. The opposite >- the roller 46‘ the latter swings back on its pivoted arm. 44 to ride upwardly along the. face of the‘ side of the pin 56 is also ?attened or notched box and then downwardly around the leading, for a portion oflit's. lengthto. receive a leaf spring lower corner of the box whereupon the roller 5T which impels the pin to rotate counter-clock stops and the box moves: on across it (Figure 4)» wise (Figure 5). so that when opposite a notch thus pressing the: piece‘ T-rl. against. both‘ the 55a,,the pin turns. su?i'ciently. to project therein leading and bottom surfaces of the box. In the and‘ drive the, ratchet wheel55 by wedging against present embodiment a second or lower sealing the side of the notch whenever the gear 52 turns roller 61: also" presses the tape against the bottom. counter-clockwise (Figure. 5),. but when the gear surface of the box. turns clockwise the opposite slope of the notch engages the slanting flattened side 56a of the pin The said rearward swing" of.‘ the power arm 44 and‘. turns it back against the spring 51 to nor about the axis of its shaft 45 through. what is mal; whereupon. the ratchet wheel 55 is unmoved. termed. herein its rearward or “applying” stroke ‘Back lash or reverse turning of the wheel 25 or‘ movement, is caused or produced by the pres- . is- prevented by a self-setting. brake which com sure against the roller 46 of the advancing box. B, and this irnpuse' is transmitted through the. prises‘a wheel 58" eccentrically ?xed on a rotatable shaft 58a adjacent the wheel 25 (Figures 3 and 4). gears 55 and 5l- to rotate the gear 52 through at The brakewheel 58' is impelled by a spring 59't0 least 90° of turn counter-clockwise (Figure 5). The cylindrical ratchet pin 56 that is carried by rotate. counter-clockwise until it touches the wheel 25‘, so that the peripheries of the two the gear 52 projects into the notch 55a of the wheels are always in contact. By reason of the 65 ratchet wheel 55‘ so that. the latter is impelled thereby‘ to rotate: in unison with the gear 52 to eccentric location of the wheel 58 on its shaft the end of the. latter’s turn. Since the said turn 582;, a clockwiseturning impulse of the wheel 25 is at‘ least 90°, the‘ pin will. have traveled from causes the two wheels to wedge or jam and any its “three o’clock” position (Figure5) , to a “twelve reverse or clockwise. turning of the wheel 25 is o’clock” position, and the next succeeding ratchet thus. prevented. notch 55a will be brought up to the “three o’clock?’ The wheel 25- with. its ratchet-carrying hub position sufficiently far to be engaged by'the‘ pin‘ portion 25a, isv journaled. on the‘v ?xed shaft 66 56. at the beginning of the next turn. which in turn, is bored to: receive an inner shaft After the sealed box B has passed |beyond the. 6|: journaled therein. On the left end of the shaft 6|. isa?xeda an. arm 62; which holds the cam 75 roller 4.6,. the arm 44;. impelled. by‘ the. spring; 5% 2,407,641 7 8 acting through gears 5| and 50 and shaft 45, swings through what is termed herein its forward or “return” stroke until the arm 44 is stopped by the rib 23a, and the arm 44 and upper sealing roller 46 occupy their normal positions shown in the pin 63 in the manner illustrated) insures against thrusting a cut piece of tape up into the. path of an object being sealed until the preced ing object is .clear of the machine, a» feature, that is of particular advantage when sealing ob Figure 3. jeots of great length. The same impulse is transmitted by 7 ' the gear 5| to the gear '52 and rotates or turns, The object being sealed may be propelled or the latter at least 90° clockwise (Figure 5). pushed across the top Zlb by hand or otherwise, When the ratchet pin 56 leaves its “twelve an objective of the present invention beingto o’clock” position at the beginning of this .turn, 10 power an automatic sealingmachine solely by the contact of its ?attened side 56a against the the movement of the object being sealed regard slope of the notch 55a, causes the pin 56 to turn less of how the object is moved. 6 or roll until the pin clears the ratchet wheel 55. Two machines may be placed near together (on ‘ ' The latter therefore remains motionless and their sides or ends or otherwise positioned) with since the notches 55a are 90° apart and the gear 15 theirtops 2Ib facing each other, as shown in 52 turns at least 90°, the pin 56 will be opposite Figure 12, or in an angular relation to each a notch when it stops at its “three o'clock” posi other, to permit objects that are passed between‘ tion (Figure 5) whereupon the leaf spring 51 will them to be sealed on two different edges at one rotate the pin enough to make it project into the time. . notch in readiness for the next dispensing cycle. 20 The device may be operated in'any position. The above described counter-clockwise (Figure The “top” 2 lb need not necessarily face upwardly 5) rotation of the ratchet wheel 55 turns the nor be horizontal. - i dispensing wheel 25 in unison with it, whereupon Sealing units embodying the principles of this wheel 25 withdraws the tape T from the supply invention may be built into other machines such r011 R by reason of the tape’s temporary adher 25 as wrapping, packaging, sealing, labeling, mark-' ence to the tape-gripping surfaces a and b‘ that ing, etc., ‘machines or apparatus. 7 - are spaced around the wheel’s peripheral portion, and severs the tape into lengths ‘by pressing it vI claim: 1. In an object-powered pressure-sensitive ad- ‘ between the cutting edge a: that is on a unit 28 hesive tape dispenser and applier, means for and the anvil roller 26, with the severed portion 30 withdrawing tape from a roll and advancing it ’ (such as T-—2) held by the surfaces a and b of towards the applying position, means for sever the unit next in advance of the one that cut it. ing the tape prior to application, and means re Meanwhile the object-powered applying stroke of sponsive to motion of an object to which tape the arm 44 (which impels the wheel 25 as above is being applied for directly transmitting power ‘ described) has transmitted its motion through 35 furnished by the moving object to the said tape ' the shaft 45, the arms 64, 65, 66 and the shaft 6| withdrawing and advancing means while such to turn the pin-holding arm 62 downwardly so object is in motion. that the pin 63 will miss the cam 3|. This per 2. In an object-powered pressure-sensitive ad mits the unit 28 that holds the cut piece T—2 to hesive tape dispenser and applier, feeding means remain in cutting position clear to the end of the 40 for withdrawing tape from a roll and‘ severing 90° of turn, at which time the piece T—2 has it into pieces prior to application, and means re arrived at the dispensing station and the arm 44 sponsive to motion of an object to which tape has ?nished its initial or applying stroke. Upon is being applied for directly transmitting power its return stroke, the arm 44, again acting through the shaft 45, the arms 64, 65, 66 and the shaft 6|, turnsfthe pin-holding arm 62 upwardly, during which movement the pin 63 strikes the cam 3| furnished by the moving object to the said feed-' ' ing means while such object is in motion. hesive tape dispenser and applier, mechanism for withdrawing pressure-sensitive .adhesive tape ' and raises the unit 28 from cutting to dispensing position whereby the piece is thrust out in “apply ing position” (as illustrated by the piece T—I in Figures 1 and 3) . At the beginning of the succeeding cycle the unit 28 is returned from dispensing to cutting position by reason of its cam 3l striking the pin ‘H as the wheel 25 turns. Thus the force of the moving object B is em ployed to effect withdrawal and severing of the tape, while the spring means 53 is called upon to perform only the lighter tasks of returning / 3. In an object-powered pressure-sensitive ad from’ a roll and advancing it towards a predee 50 termined position,'means for severing thetape prior to application, means for positioning a sev ered piece of the tape ready for engagement‘ by an object upon movement of the latter toward and against the tacky side of the positioned piece of tape, means for applying the positioned piece of tape to the object including a movable presser normally disposed at the back of, the piece'of tape and adapted to be moved by the object when the latter is moved against the piece'of ' the arm 44 and. other parts to normal position and of rotating the units 28. In other words, 60 tape and presser, means for restoring the presser to normal position following application of the tape withdrawal and severance is powered by the object-impelled applying stroke of the sealing arm; tape positioning and machine resetting is powered by the spring-impelled return stroke of the sealing arm, the spring being loaded each time by the arm’s applying stroke. If desired, however, the object-impelled applying stroke of the arm may be made to rotate the units 28 as well as the wheel 25, e. g., by rendering the mov able pin 63 ?xed (in the manner previously de scribed) so as to engage the cams 3! as the wheel 25 turns; but postponement of rotation of the piece of tape to the object, and mechanical driv ing means driven by the object-impelled ‘applying movement of said movable presser for directly driving said mechanism for withdrawing and ad-,' vanoing the tape while such object is in motion; 4. An automatic object-powered vpressure-sen‘ sitive adhesive tape dispenser and applier com prising a feeding mechanism for withdrawing pressure-sensitive adhesive tape from a roll and severing it into pieces, a positioning mechanism for positioning‘ the severed pieces successively ' into a predetermined applyingposition ready for ' units to projecting position until during the , engagement by an object upon movement of the return stroke of the arm (such as by oscillating 75 latter toward. and’ against the tackvsideof a 2,407,041 10 positioned piece of tape, means for applying the positioned piece of tape to the object including gagement by an object upon movement of the latter toward and against the tacky side of a positioned piece of tape, a presser roll normally disposed at the back of the positioned piece of a movable presser normally disposed at the back ' of the piece of tape and adapted to be moved by the object when the latter is moved against tape to apply it to the object and adapted to ' the piece of tape and presser, spring means for be moved by the object when the latter is moved restoring the presser to normal position follow against the piece of tape and the roll, a swinging ing application of the piece of tape to the object, pivoted arm on which the roll is rotatably mount mechanical driving means driven by the object ed, gears associated with the arm so as to be impelled applying movement of the movable 10 oscillated thereby, one-way clutch’ means con presser for directly driving the said feeding necting the gears and the tape feeding mech mechanism, and mechanical driving means driv anism whereby the object-impelled applying en by the spring-impelled return movement of stroke of the arm drives the feeding mechanism the movable presser for driving the said position to withdraw and sever a further piece of tape, ing mechanism, to automatically supply a fur 15 spring means for returning the arm to normal ther piece of tape in applying position following position and means associated with the tape po application of the preceding piece of tape. . sitioning mechanism and the arm whereby the 5. The device of claim 4 in which the movable return stroke of the arm drives the positioning presser is a roller rotatably mounted on a piv mechanism to position the said further piece of oted arm. \ 6. An automatic object-powered pressure-sen sitive adhesive tape dispenser and applier com prising a feeding mechanism for withdrawing pressure-sensitive adhesive tape from a roll and severing it into pieces, means for placing the pieces successively into a predetermined apply ing position ready for engagement by an object upon movement of the latter toward ‘and against the tacky side of a positioned piece of tape, means for applying the positioned piece of tape to the object including a movable presser normally dis posed at the back of the piece of tape and adapted to be moved by the object when the latter is moved against the piece of tape and presser, means for restoring the presser to normal posi 20 tape. 9. An automatic object-powered pressure-sen sitive adhesive tape dispenser and applier com prising means for holding a supply of tape, a feeding wheel adapted to withdraw tape from the supply upon rotation of the wheel with tape trained around it, means for severing the tape into lengths upon rotation of the wheel, at least one rotatable tape-gripping unit adapted to hold a severed piece, means for turning such. unit on its axis to thrust the severed length outwardly into a predetermined applying position ready for engagement by an object upon movement of the tape to the object, and mechanical driving means driven by the object-impelled applying move latter toward and against the tacky side of the positioned piece of tape, a presser roll normally disposed at the back of the positioned piece to apply it to the object and adapted to be moved by the object when the latter is moved against the piece of tape and the roll, an oscillating piv > ment of the movable presser for directly'driving ‘ oted arm on which the roll is rotatably mounted, tion following the application of the piece of the said feeding mechanism while the object is 40 gears associated with the arm so as to be oscil in motion. lated thereby, one-way clutch means connecting 7. An automatic object-powered pressure-sen the gears and the feeding wheel whereby the sitive adhesive tape dispenser and applier com object-impelled applying stroke of the arm drives prising dispensing means for supplying succes the feeding wheel to withdraw and sever a further sive pieces of adhesive tape into a predetermined 45 piece of tape, spring means for returning the position to be engaged by an object upon move arm to normal position and means associated ment of the latter th'ereagainst, a swinging press with the unit-turning means and the arm where er for applying a piece of tape to the object in by the return stroke of the arm turns the unit response to the said movement, gears connected which holds the said further piece of tape so as so as to be oscillated by the movements of the 50 to place the piece in applying position. ' presser, and one-way clutch means between the 10. In a tape dispenser which comprises a gears and the tape dispensing means whereby the wheel having cutting edges around its peripheral applying movement of the presser produces a portion that sever the tape trained around the further operation of the dispensing means to wheel when they are pressed against an anvil automatically position a further piece of tape. roller, an anvil roller comprising a surface sleeve, 8. An automatic object-powered pressure-sen a core and a resilient inner sleeve therebetween sitive adhesive tape dispenser and applier com su?iciently yieldable to permit the surface sleeve prising a feeding mechanism for withdrawing to complement the thrust of a cutting edge and and severing lengths of pressure-sensitive ad su?iciently resilient and resistant to permit the hesive tape from a roll, a positioning mechanism surface sleeve to function as an anvil against for placing the severed lengths successively into which a cutting edge may press the“ tape to cut it. a predetermined applying position ready for en ARTHUR A. ANDERSON.