US2582705A - Tape-dispensing device - Google Patents

Description

Jan. 15, 1952 A. P. KRUEGER TAPE-DISPENSING DEVICE Filed July 12, 1946 5 Sheets-Sheet l Jan. 15, 1952 A. P. KRUEGER TAPE-DISPENSING DEVICE 3 Sheets-Sheet 2 Filed July 12, 1946 J 15, 1952 A. P. KRUEGER 2, 82,705

TAPE-DISPENSING DEVICE Filed July 12, 1946 '5 Sheets-Sheet s Patented Jan. 15, 1952 2,582,705 TAPE-DISPENSING Alfred P. Krueger, Stratford, Conn., assignor to Derby Sealers, Incorporated, Derby, Conn., a corporation of Connecticut Application July 12, 1946, Serial No. 683,249

12 Claims. (Cl. 16484.5)

This invention relates to a tape-dispensing device, and more particularly to a device fordispensing pressure-sensitive tape.

Tape of the character referred to above is tacky or clingable upon one surface, and for this reason some difiiculty has been encountered in providing a device which would draw or feed the tape from a supply roll thereof and present a free end projecting from the machine which could be grasped by the fingers of the user and torn off or severed in a convenient manner. While in the particular machine herein illustrated a tear-01f blade is shown, certain principles of the invention may be employed in a machine which automatically severs the tape and dispenses the severed portion to the operator.

It has been found that tape of this character may be fed or drawn from the supply roll by a traveling feeding means having a surface to which the tacky side of the tape may cling, the tape adhering to the feeding means with sufficient force to draw it from the supply roll. The fact, however, that the tape will adhere to the feeding means with considerable force presents the problem of stripping it from this feeding means in order that there may be presented a free end which may be grasped by the operator.

Therefore, one feature of the present invention is the provision of stripping means to positively strip the tape from the feeding means as it is being advanced by the latter. This stripping means is so positioned relatively to the feeding means that the tape will have a sufficient contact with the latter in order to adhere thereto with sufiicient force to be drawn from the supply roll and will be stripped from the supply roll at a point such that substantially the entire portion of the free or stripped end will be severed for use.

In some instances, this stripped end of the tape will tend to drop into contact with the feeding means after being stripped therefrom, and in such case might readhere to the latter. For this reason, it may be desirable to have the stripping means engage the tape at more than one point along its length so that the stripped end will be kept free of the feeding means and not permitted to readhere thereto.

.One object of the present invention is to provide a new-and improved device for dispensing pressure-sensitive tape.

further object of the invention is to provide a dispensing device for pressure-sensitive tape, comprising a traveling feeding member to which the tapeis-adapted-toadhere andan oscillating stripping member adapted to be moved in a closed curved path against and from the surface of the tape on the feeding member to strip the tape therefrom.

A further object of the invention is to provide a dispensing device for pressure-sensitive tape having a rotating feeding member, to the surface of which the tape is adapted to adhere, so that it may be drawn from the supply roll and a stripping member or members adjacent the feeding member and positioned on both sides thereof, the stripping member or members being intermit tently moved against and withdrawn from the surface of the tape by a movement in a closed curved path to effectively strip the tape from the feeding member and cause a free end of the tape to project therefrom to be grasped by the operator.

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings:

Fig. 1 is a side elevational view of a tapedispensing machine embodying my invention;

Fig. 2 is a front elevational view thereof;

Fig. 3 is a side elevational view of the machine showing the side opposite that shown in Fig. 1;

Fig. 4 is an enlarged sectional view on line 4-4 of Fig. 2;

Fig. 5 is a side elevational view of a modified form of my invention;'

Fig. 6 is a front elevational View thereof;

Fig. 7 is a partial sectional view on line 7-7 of Fig. 6; and

Fig. 8 is a partial side elevational view showing the side opposite that shown in Fig. 5.

To illustrate a preferred embodiment of my invention, I have shown a tape-dispensing machine comprising a pair of supporting frame members Ill and II, which members may be secured in spaced relation by spacing blocks I2 and screws l3. These frame members serve to support the working parts of the device, and the particular construction of the frame members is relatively unimportant.

Rotatably mounted in the frame members If! and H is a shaft M upon which is mounted a feed roll [5 which preferably is provided with a roughened surface so that the tape will properly adhere thereto.

The shaft l4 extends through the frame member ll,v and secured to this extended end is a ratchet wheel l6 having ratchet teeth I! (Fig. 3) designed to be engaged by a pawl is pivoted at l9 to a pawl carrier 20 loosely mounted on the shaft 14. The pawl is normally urged into engagethis spring will normally urge the pawl car rier 20 to the position shown in Fig. 3 in which it is engaged with the stop 25.

It will be seen that the handle 2 2 will normally be moved in a COuIl'BeIClOCkWisB IJDSl.llQn flfOm 1t position of rest shown in Fig. '3, and to limit the,

movement of the handle and pawl carrier 26 and,

22 is secured to the h spring 46 normally holds the bowed parts of the stripping elements 4| and 42 against the collar 46. The tailpiece 45 is eccentrically connected to the shaft 38 by a pin or screw 48 so that, when this shaft is rotated, the stripping members will be oscillated. It will be seen that as the point Will. e mqv di a irc la ath. by he rotation of the shaft- 38 arid as] the bowed portion of the stripper elements will be maintained against the collar 44, the upper or operative end of the stripping elements M and 42 will be oscil- 1 lated on moved in a closed curved path in what therefore, limit the angle through which theshaft i4 is rotated by one stroke of the handle, a stop 26 is mounted on the frame member l I, this stop member being provided with a slot 2'! within which disposed a scr ew 2'8 engaging the frame member so that the stop may be adjusted in positlo'h relatively to the 'pawl' carrier. rhu s the stroke, of the latter isnot. only limited butalso may beadjustedso thatthe length of the piece of tapedelivered from the machine atone opera 1 tion of the. lever 22 may be varied. It will; or;

course, beundjer'stood that during a return or clockwise. movementof the handle iz, the aw rides freely over the teeth 11 or the ratchet wheel and doesnot effect reverse movement of the shaft 14. Reverse movement of the shaft It and ratchet wheel 16 is, prevented by the friction of the gearing 35 and bythefrictionof the element 45 onthe collar 44. V

Asshewhirint 4, a, supply r011 of'tape 2 9 is adapted to be rotatably carried by a shaft 38 mounted in the frames lfi and II, thisroll being generally below: the level o'f the feed 'roll 15, so tha'tthetape a! issuing from the roll will contact a substantial length of the surface of thefeed roll so as to adhere thereto with the necessary force to draw it fromthe supply roll. A severing r tear-off member 32 is also mounted on the frame above the tape 3 the forward edge of this member being adapted to be usedas a tear-off blade againstwhich the free end of the tape i may be severed.

a member of substantially U-shaped form prov This blade may be ,a. part of vided with legs 33 by which the member i'sfretained in place.

Theshaftlll alsoextends through the frame member lll, and secured on this projecting: end, is a gear 34. which, through a chain of speed-increasin'g'gearing' '35, drives a gear 35' which in turn meshesl with agar 3T securedtoa stub shaftfflrotatably mounted in the frame mem be; '0: The-sha t ay eheld ap itione y: c l rs 9 an s d os e des f, b s in v l slsfii w d lath mem er euei adi 'sen hs dro l i5 i slot ed. bifurcated stripping member having stripping; @195 g lem ts nd 1m ns n n i h side of slot 43, this memberbeing so disposed that; h e d roll l 5 i recei e ll- 2 ,5 4.3.; 0 a oneof the stripping-elements lies on each side and; close to the lateral face 'of'thefeed roll. The members M and {32 are, bowed-forwardly, as shown in Fig. 4, so as to lie against an abutment formed: by a collar l on the shaft 14..

Secured to and depending downwardly from. this stripper element is a tailpiece 45, to fthex lowerv end of whichis-secured a spring 46, the. otherend of thespringbeing securedto 0116501 the spacing. members; 12; Theatensiqneoi the may be ter-med a gyratory motion. Thus the upper edge" of th elements 42 will be moved "upwardly againstt e tape as shown in Fig. 4 and ly' awayrrtm the tape and again returned in a closed circular path to strike the tape at a point further back along its length and: again strip. it from the roll;

If desired, auxiliary forwardly extending. stripping elements 49 and EBmay-be secured to the elements- 4 Land 4-2 which, asshown in Fig. 4, project forwardly from the latter, and: as the forward edges of theseelementswill be moved overpaths of substantially the same-shape as the elementsdl and 42 they will; if the tape tends to drop uponthe surface-of the feed roll andr'e adhe're the'reto, strike the tape 'and prevent such readherence. Thus it will be assured that the stripped end of the tape shown at 51: in Fig. '4 will project freeIy-irom-the feed roll is where it may bereadily-g'rasped by the operator anatomoff against the severing blade 32.

It will benoted that, a shown in Fig. 4, the stripping elements 4i and 42 are disposed; forwardly of the shaft 14 and are urged rarw'ardiy toward this shaft by the spring H5; In Figs.- 5 to 8 of the drawings I'have shown a slightly modified form of my invention wherein the stripping elements are mounted rearward'ly of the shaft; which carriesthe feed'mll; This modified-form of my invention is similar in, principles to theform previously described;

s. hown n Fi s. ,5. 9. .afe'sd o l 55. 5%;- ied upq a shaft'ifibp rt d nte i nt y in unterc ockw s irec ion.aseshowh in by an actuating lever 58 looselyniounted on the shaft 56 and ca'rrying a pawl 5,9,fel' gaging a, r het W l a e u ed 9. hg h l l h supply roll of tapeis shown atjfifl, the tape i's s n therefrom being-.trainedabout a, guide r011 62 so as to make pr per coniflact.with.thelsurfacev of the feed roll. A spring 63 oonnected, to a pgst 64 n he am r.semantici e e eureaat. ts. heit n fie wikp ionl a o he'l v r. tends to maintain this lever in the position shown n; E a n S ured on e dzo th eed. s tt;.5 6;- is a gea .6, con ee ed h ough cha n of speedeinel creasinggears to a gear 6-! ;mounted;up0nfleshaft; 6t rotatably carried bythe; frameeofthe machine; Securedto theshaft .fifl is a crank disk. 69:

A pair of--stripper--members H; and- ?2; are mounted onezuponeeach "side of'the feed rolll55; and relatively close tortheelateralzsurfaces theree of; these membersbeing con-neotedat their lower ends..-by' a spacingblock |3 and seoured eccentri cally to the crank disk 69 byzasorew 'Hl. springs; 15" hold the. strippers 1 against collars 16- on the shaft 56":

'Supplementalbr auxiliary-strippers fl msy-he I secnr ed to strippers. 3| l saiidfli ifdshed; these.

members extending forwardly from the main stripper elements so as to contact the tape at a position forwardly of that contacted by the members ll and 12. As shown in Figs. 6 and 8, a severing element in the form of a tear-off blade 79 may be mounted on the frame of the machine, this member having downwardly extending legs 80 and BI pivoted on the shaft 56. The frame member H is provided with an arcuate slot 82 in which moves a set screw 83 threaded into the arm 8! so that the tear-off blade 19 may be adjusted pivotally about the shaft 56 .to the extent provided by the slot 82 and locked in any adjusted position. Thus the tear-off blade may be moved forwardly to an out-of-the-way. position to expose a greater area of the feed roll to facilitate the effecting of engagement between the free end of the tape and the feed roll when putting a fresh supply of tape in the machine.

It is believed that the operation of the device will be clear without further description thereof. As'will be obvious, the lower end of the stripper elements II will be moved in a circular path by rotation of the shaft 68 which will be rotated when the shaft 56 is rotated, and that as the spring 75 holds the stripper elements against the collar 76 on the shaft 56 the operative ends of the stripper elements will be moved in a closed curved or oval path with an oscillatory or gymtory motion.

The gearing between shafts I 4 and 56 on the one hand, and the shafts 38 and 68, respectively, on the other hand, is such that, while the feed roll shafts rotate in a counterclockwise direction, as viewed in Figs. 4 and 7, the crank shafts 38 and 68 rotate in a clockwise direction, as viewed in these figures. Therefore, the upper end of each of the stripperelements moves upwardly against the tape, stripping it from the feed roll, and then forwardly in the same direction as that of the movement of the tape but at a speed preferably greater than that of the tape, so that the stripper elements will, in turn, be stripped from the tape. After each of the stripper elements moves forwardly, it is then moved downwardly and rearwardly, and again upwardly and forwardly to repeat the stripping operation.

It will be apparent that the amplitude of the movement of each of the stripper elements in the direction of travel of the tape may be varied by the relative positions of the crank shafts with respect to the feed roll shafts, thus changing the effective length of the lever arms through which the cranks operate. That is, for example, if in Fig. 4 the shaft 38 is moved closer to the shaft M, the upper end of the stripper element 42 will be given a greater throw in a horizontal direction. The vertical throw of the stripper elements will remain constant, depending upon the eccentricity of the crank pin 48.

It sometimes occurs that upon continued use of the device the tape will be found to adhere to the severing members 32 or 19. In order to prevent the possibility of any such occurrence, I have shown a resilient stripping member 32 associated with the blade 32 and a resilient stripping member 19 associated with the blade 19. These stripping members may consist of resilient sheet metal plates secured to the severing members by the rivets 32 and 19 respectively, so that their forward ends normally stand in spaced relation to the forward ends of the severing blades. When the tape is moved upwardly against the blades to be torn off these stripping members will be carried with it and will offer only slight resistance to such movement, and hence 6-: will not interfere with this operation. When the tape has been severed, however, their inherent resilience will be sufficient to restore them to their normal positions, shown in Figs. 4 and 7, and cause the unsevered end of the tape to be stripped from the respective blades.

While I have shown and described some preferred embodiments of my invention, it will be understood that it is not to be limited to all of the details shown, but is capableof modification and variation'within the spirit of the invention and within the scope of the claims.

What I claim is:

1. In a machine for feeding pressure-sensitive tape, a frame, feeding means rotatably mounted thereon; including a tape-advancing member having a surface to which the tape adheres, a stripping member mounted on the frame having a portion adjacent one end thereof to extend to said surface of the tape-advancing member to engage the tape and strip it from the tape-advancing member, means for rotating the other end of said stripping member, and means on the frame engaging an intermediate portion of said stripping member to permit sliding movement thereof and restrain it from movement transversely of its length.

2. In a machine for feeding pressure-sensitive tape, a frame, feeding means rotatably mounted thereon, including a tape-advancing member having a surface to which the tape adheres, a

stripping member mounted on the frame having a portion adjacent one end thereof to extend to said surface of the tape-advancing member to engage the tape and strip it from the tapeadvancing member, an abutment carried by the frame, means for urging an intermediate portion of said stripping member against said abutment, and means for actuating said stripping member. 3. A machine for feeding pressure-sensitive tape comprising a frame, feeding means on the frame including a rotatable tape-advancing member havin a surface to which the tape adheres, a stripping member slidably mounted on y the frame, an abutment carried by the frame against which an intermediate portion of said stripping member engages, means engaging the lower portion of said stripping member to move it in a circular path, and the upper portion of said stripping member being disposed adjacent the tape on the tape-advancing member to strip the tape from the latter.

4. In a machine for feeding pressure-sensitive tape, feeding means includin a rotatable member having a surfaceto which the tape adheres, an oscillatory stripping member having adjacent end portions adapted to intermittently engagev the tape adjacent the surface of said rotatable member and on both sides thereof to strip the tape from the feeding means, and means to rotate the other end portion of said stripping member and cause the first end portions to move in a closed curved path across the path of the tape.

5. In a machine for feeding pressure-sensitive tape, a frame, a rotatable member to the surface of which the tape adheres, a shaft carried by the frame on which said member is mounted, a stripping member on one side of said rotatable member having an end portion to engage the tape and strip it therefrom, means to rotate the other end portion of said stripping member, and means to urge an intermediate part of said stripping member against the shaft.

6. An apparatus as in claim 5, wherein said amateur st pping member has amend portion, omeaeh side of the rotatable member-to engag the tape:

'7. An apparalms as in claim 5, wherein said stripping member has an end portion: oneach side of the rotatable member to engage-the tape and said stripping element is bifurcated to providesaid end portions, and the rotatable member is received in the space between. the forks-thereof;

8. In a machine for feeding pressur'e sensitive tape, a frame, a rotatable member having a: surface to which the tape adheres; a-shaft retatably carried by the frame on which saidmemberis mounted, means for intermittentlyrotatingsaid shaft to advance the tape, a bifurcated stripping element having a fork project-ingoneach si'cie of said rotatable member; the end portions of which forks are adapted toengagethe tape the surface of, said rotatable member and strip it therefrom, a tailpiece provided on said stripping'element, means for urging an intermediate portion of said strippingelementbetween the tailpiece and the tape-engaging: portions thereof against saidshaft, and means for-rotating the tail portion of said element to move the tape:-

engaging portions the'reofina closedcurvedfpath;

9. In a machine for feeding pressu're sensitive tape, a frame, a rotatable member having a: surface towhich the tapeadheresa shaft rotatably carriedby the frame on. which, said a memberis mounted, means for intermittently. rotating, said r shaft to advance the tape, a bifurcated stripping element having a fork'projeeting on; each side of said rotatable member,- the end. portions of which forks are adapted tozengagepthe tape onithe.

surface of said rotatable member and; strip: it

mounted, means forintermittently;rotating said shaft to advance the tape, bifurcated stripping element having a fork projectingoneachsideof said rotatable member, theendportions iof which forksare adapted to engage thertapeonithesure face of said rotatable memberand-strip iii-11711816.-

' fiber, a aliases gamed-0s said-stripping; ei'eimen-t e spring forurging an intermediate portion of said" stripping element between the tailpiece and: the tape-engaging portions thereof against saidshaffiand means-for rotatingthetailportion of said element to move, the'tape-engaging 'portrons-thereof in a closed-curved path.

11. In a machinepfor dispensing pressuresensitive tape, a frame; means for mounting a supply'roll oftape thereon, afeeding roll carried, by" the frame around which the tape; is trained to'drawit from the supply roll; means to rotate said feed'roil, lever means for actuating'a' feeding rol1; a: severing biade adjacent. the feed roll, and means pivotally" mounting; said' blade on the frame coaxially with said feeding roll whereby it may be moved with respectto the: feed roll to: expose, a greater p'arto'f the surface of'the latter adja'centthe supply rolli '12': In a mechanism for. dispensing pressuresensltive tape; frame means for mounting aisupplymoil" of tape thereon, a feeding r011 rotatably mounted on the frame in apositi'on spaced from the supply roll whereby theend of the tape extends from the supply roll tov the feeding roll, lever means for actuating the feeding roll; a severing blade adjacent the feeding roll and in spaced relation, therefrom whereby the tape travels between the feeding roll andthe blade, means pivotally mounting said blade on the frame, coaxially with saidfeeding r0111 whereby it may be. adjusted alongfthe. surfaceofthe feeding roll to expose agreater. portionof thelatter adjacenti the supply roll and, means for securing said blade" in adjusted position.

ALFRED P. KRUEGER.

REFERENCES} CITED The following references are of record.- inrthe file of, this patent-:

V UNIH ED STATES PATENTS Number

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