US1710415A - Tape-applying machine - Google Patents

Description

Patented Apr. 23, 1929.

uurrs STATES FREDERICK S. GLINES, OF LYNN, MASSACHUSETTS.

TAPE-APPLYING MACHINE.

Application filed February 12, 1927. Serial 1%. 167,757. I

This invention relates to a machine for applying tape for reenforcing shoe parts and similar Work and is an improvement on the invention shown and described in an application iiled by me in the United States Patent Oiiice on October 25, 1926, for tape applying machines, Serial No. 143,986.

In the machine shown and described in said application, the work after being inserted in the machine is held by the upper feeding member'and tl-ie pressing member alternately, the upper feeding member hold ing and feeding the work during its forward feeding stroke and while the pressing, member is raised and the pressing member descending and holding the work from the end of the feeding stroke during the backward. movement of the feeding member and until the next feeding movement starts. The work is, therefore, held continuously during its progress through the machine by either one or the other of these members. To permit the cutting of the tape, however, it is necessary in said machine to raise both the upper feeding and the pressing members to allow the cutting members to move in there under and sever the tape from the work at a point under the upper feeding member. The raising of these members releases the work and inthe interval of time which clapses before the cutting, the work must be held in position by the operator but it has been found that the operator may inadvertently or through carelessness or inattention move the work slightly in which case, the cutting may occur at the wrong point. After the cutting operation the work must be free to be removed or rearranged in the machine for the next operation.

Then the feeding and pressing; members are lowered at the conclusion of the cutting operation, if the feeding member is at the end of its feeding; stroke and is raised, the cut end of the supply tape is not gripped by'it until it has moved toward the operator, descended and started the feeding movement during which interval of time the supply end of the tape may become displaced and the feeding member failed to grip it on its forward movement, in which case, the work must be re-arranged in the machine involving loss of time. v

. One of the objects of, the present invention is the provision in a machine of the character described of positive automatic means for holding the Work in the interval between the raising of the feeding and presslng members and the cutting operation.

I accomplish this object by the provision of a clamping member for holding the Work during the interval between the raising of the feedingand pressing members and the cutting operation, said clamping member being automatically thrown out of operation at the time of the cutting to permit the Work to he removed from the machine or rearranged therein before the feeding and press-- ing members are lowered into operative position.

Another object of the invention is the provision of means for adjusting the time of the releasing of the clamping means in relation to the cutting operation.

A further object of this invention is the provision of feeding and pressing means so constructedthat when these members are loweredinto operative position after each cutting of thetape, the gripping of the cut end of the supply tape by one or the other of them is positively assured.

To accomplish this object of my invention, the upper feeding member or feed foot is recessed and the, pressing member is provided with an extension projecting into said recess so that immediately on the conclusion of the cutting operation whichever one of these members is in a lowermostposition grips and holds the supply end of the tape before it can be disturbed by the movement of the work. Since one or the other of them is always in a lowermost position except When both are raised to permit cutting, the holding ofthe supply end of the tape for feeding is positively assured.

Other objects of the invention will be more specifically set forth and described hereinafter.

In thedrawings illustrating the preferred embodiment of my invention, Figure l is a side elevation as viewed from the operators seat of the end portion of the machine shown in my said prior application having applied thereto holding devices made and adapted to be operated inaccordance with this invention .Fi 2 is a partial end olevationof the same Fi 3 is a'view in )ers ective of the clamping member; Fig. 4 is a view in perspective of the cam mechanism carried by the cutting mechanism for operating the clamping member Fig. 5 is a plan View on line 5-5 looking downwardly in Fig. 2; Fig. 6 is a view in perspective of the pressing member or hammer provided with the extension adapted to project into the recess of the upper feeding member; and Fig. 7 is a View in perspective of the recessed upper feeding member or feed foot.

Only such parts of the illustrative machine of my prior application have been shown herein as are necessary to elucidate and explain the present invention and for a more complete and detailed description of said machine, its parts and mode of operation, reference may be made to said prior application. For convenience in such reference, however, all parts of the machine of said application which are shown herein have been given the same reference numerals as in said application and the new parts have been designated by reference numerals 200 and above.

Referring to the drawings and to the parts of the machine of said application therein shown, and 16 indicate a lower arm and an upper arm of the machine with the operating instrumentalities mounted on the adjacent ends thereof. support 20 on the end of the lower arm over which the work is fed by the cooperative action of a feeding member 200, which embodies one feature of my invention and will be described hereinafter, and an idler roll 22, a guide 23 for delivering the tape to the feeding means and a pressing member 202, which embodies another feature of my invention and which will be described later, for pressing the tape down upon the work and a pair of cutting members 25 and 26 for severing the tape when desired.

The feeding member is mounted on the lowor end of a feed bar which is loosely mounted for reciprocation in a cylindrical housing 36 supported by a bracket 37 integral therewith. The end of the bracket is split and provided with cars 38 bored to receive a screw 39 for fastening the bracket to the end of the rock-shaft 410 rotatably mounted in the upper arm 16 and held against end thrust by a collar 11 fastened to the rock-shaft by a screw 42. An idler roll 22 loosely mounted on a screw pin 4A set in the end of the lower arm coopcrates with the feeding member.

The feeding member 200 moves forward to feed, is then raised and moved backward anl is finally lowered to begin anew the feeding movement. The forward feeding and the backward movements are imparted to the feeding member by rocking the rock-shaft 40 and the raising and lowering of the feeding member is accomplished by the rocking of a lift-shaft which is connected to the feedbar 35 by means, only a part of which, link 57 connected by a screw 58 to an arm 59 fixed on the end of the lift-shaft, is shown.

For guiding the tape 69 from a source of supply to the feeding members a guide 23 is These comprise a work block 120.

secured to the feedbar by a screw 33 and the tape is held therein against retraction by a weighted dog 74.

The pressing member 202 is secured at one end by a screw to the lower end of an upright arm 81 fixed on the end of a shaft mounted for rocking movement in the end of the upper arm 16 (Fig. 2). A pin 83 looks the pressing member 202 and arm 81 together. The pressing member is, in the operation of the machine, raised at appropriate times by the rocking of the l.iftsl1aft 50 by means of a lug fixed on a collar 60 fastened to the end of the lift-shaft which lug engages the end of a screw 91 threaded through the upright arm and held'in adjusted position by a set-nut92. A spring (not shown) bears against the upper portion of the arm 81 and forces the pressing member downwardly when the lug 90 permits.

The two shearing members 25 and 26, arranged for longitudinal movement into and out of cutting position, mounted, the member on a carrier lock slidable on the rock and lift shafts and the member 26 on the member 25 by a pivot pin 103. The member 25 is loosely mounted on a screw 101 set in the bottom face of the block and fits in a ecess therein and is held by a spring 102 in said recess.

A helical spring 105 on the lift shaft holds the carrier block in a normally retracted posit-ion and treadle operated bell-crank lever 106 carrying a pin 108 and a roll 109 adapted to engage the rear face of the carrier block may be operated to throw the block and shearing members forward, the spring 105 returning them to normal position when the pressure on the treadle is released. On the rear end of the shearing member 26 is set an upright pin 117 carrying a roll 116 and the free end of a spring 118 moui ted on the carrier block presses the pin inwardly and the roll against a cam which controls the opening and closing of the shearing members for cutting on their forward movement.

' To depress the forward ends of the shearing members to go under the upper feeding and pressing members when they are raised,

a block 120 is mounted upon the extended pivot pm 103 and 1s provided with a vertical 7 recess 121 open at the top within which is set a roll 122 on a pm 128. A depending vertical cam-plate 125 is fastened to the'under v "ace of the upper arm in position for its lower edge 126 to engage theroll 122 in the On the forward stroke ofthe shearing members the roll rides along said edge and on reaching the downwardly inclined portion 127 of the cam the members are depressed to go under the raised feeding and pressing members.

For raising the upper feeding member and the pressing member on the forward stroke of the shearing member, an upright arm llt Cir ed to engage a cam-plate 133 secured to the top face of the block 100 by screws 134. The edge of the cam-plate is so formed that as the shearing members are moved forwardly the arm 11 1 is thrown outwardly rocking the shaft and raising the pressing member-202 and the upper feeding member 200 to permit the severing of the tape to take place thereunder. For guiding work through the machine an edge-plate 28 is mounted below the work support and is depressed by means of a linger-piece 156. F or a moredetailed description of the foregoing mechanism and its operation, the said application hereinbefore mentioned may be ref-erred to.

One ofthe novel features-of the present invention consists in providing pressing means adapted for engaging the work to hold it at approximately the same point that it is engaged and held by the feeding means at the beginning of the feeding movement. One means of accon'iplishing this result is by providing the upper feeding member with a recess 20 1 open at the bottom and parallel with the normal line of feed and the pressing member with an extension 205 projecting rearwardly into said recess, (Fig. he recess is sufficiently deep to permit the pressing member to be operated in its usual manner. The main pressing member may be provided with grooves 207 arranged in two series at right angles to'each other to emphasize the pressing action and the under surface of the extension 205 is cut out on a curve to prevent contact with the idler roll 22 and to form a sharp gripping end edge 209. The work engaging edges of the feeding member may be provided with the usual serrations 208; Y

B y arranging the feeding and pressing means so that they engage the work approximately at the same point, the gripping of the tape after a' cutting operation is positively assuredrand this feature contributes to the continuous operation of the machine without requiring any readjustment of the work or replacing of the cut end of the supply tape.

Another feature of my invention consists in providing means for clamping the work when the upper feeding member and pressing member are raised to permit the cutting of "the tape. One form of such means is shown comprising a clamp 210 fixed by a screw 211 on one end of a'rod 212 rotatably mounted in bearings211 and 216 carried by an angleplate 218 secured by screws 220 to the under face of the end of the upper arm 16. A coiled spring 222 is mounted on the rod 212 with one end fixed in a collar 22A- adjustably fastened to said rod by a set-screw 226 and its free end engaging the upper arm 16. The spring is so mounted that the rod is turned to of the machine.

hold the clamp in a normally raised, inoperative position (Fig. 2) yet permitting a rotation of the rod to turn the clamp downwardly into a holding position. The other end 228 of the rod is bent upwardly and outwardly and normally engages the rock-shaft 40 under the impetus of the spring 222. h

' Upon the carrier block 100 on a screw 230 set in the side thereof is pivotally and loosely mounted an elongated plate 231 extending toward the end of the upper arm 16 and having mounted onits free end a cam forturning the-rod 212 on the forward movement of the carrier block to-throw the clamp into operative position. The cam is in the form of a plate 232 having its lower edge 233 turned horizontally inwardly and the forward extended end 234: thereof turned obliquely upwardly for engaging the end of the rod 212 to turn it. The cam is secured to the plate 231 by two screws 236' andthe screw holes in the said plate are in the form of slots-238 to permit the cam to be adjusted to a limited extent on the plate in a. longitudinal direc tion and thereby to vary the time of operation of the cl amp in relation to the cutting operation. To hold the cam against upward movement on the plate 231, the upper edge 2410 of the latter is turned over to engage the upper edge'of the former.

To hold the elongated plate 231 in an approximately horizontal position yet permit ting the cam end to be depressed slightly when necessary the side of the carrier block 100 is provided with a. vertical recess 2412 in which is loosely mounted a helical spring 2 1 1 which supports a pin 2 16 fixed on the inner face of the plate and projecting into said recess.

In the operation of the machine the operator first raises the feeding and pressing members by depressing the treadle which throws the cutting device forward and holds the treadle depressed until the work is properly inserted and positioned. The ends of the shearing members, when in a forward posi tion, are above the work and therefore do not interfere with its insertion. If preferred, however, the pressing member may be raised to allow the work to be positioned by manipulation of the upright arm 81 (see Fig. 2) and this effects the lifting of the feeding member through the instrun ientality of the extension 205 in the recess of the feeding member. The feeding member is lifted in the same manner when the pressing member is raised by the forward stroke of the cutting mechanism. After the work has been properly positioned in the machine, the feeding and pressing members are lowered and the work is then held by whichever one of these members is in a lowermost position in the normal operation Since the machine can be operated continuously irrespective of the operation of the cutting means, the feeding and pressing members may be in different posi tions when lowered but in any event, due to my improved construction, the work is as sured of being held at a point under the feeding member. and sufficiently behind the cutting point to hold the supply end of the tape.

When the cutting mechanism is thrown forward, the oblique end 234; of the cam. strikes the end of the clamp-rod and turns it outwardly and downwardly thereby rotating the rod in its bearings and turning the clamp into engagement with the work. As the cam moves forward, it slides over the end of the clamp-rod which is in engagement with its lower face until the cam passes that end when the spring 222 turns the clamp-rod back into normal position behind the cam. The cam should be of such length that the clamp thrown into operation just before the feeding and pressing members are raised and is held in operative position until the tape has been cut. This turning of the release of the clamp from the work may be varied by the adj ustment of the cam on the elongated plate 231.

Preferably, the clamp is released as the cut- /Vhen the ting operation is performed. shearing members move back on their return stroke, the cam does not engage the end of the clamp-rod 212 with the exception of the top end of the oblique portion 234 and when this occurs the spring 244 permits the cam end of the elongated plate to be depressed and the portion 234; to ride over the end of the clamp-rod. V

The cutting operation is performed during the very last portion of the forward movement of the shearing members so that at the I end of that movement, the cutting has been completed. The cam should be so adjusted that upon the completion of the cutting operation it has been released. The result is that the work is then free either to be taken out of themachine by the operator or to be re-positioned therein for the next operation and the operator maintains the pressure on the cutting mechanism treadle for the pun pose of permitting this manipulation. As soon as the Work is re-positioned or a new piece of work inserted in the machine, the operator releases the pressure on the treadle and the parts are returned to their normal position for resumption of the work. There is no objection to permitting the machine to continue to operate while the feeding and pressing n'iemhers are raised for although they go through. their appropriate move ments, they are of no effect.

The novel features of the invention herein described contribute to the automatic features of the machine as a whole, tend to insure a continuous operation of the machine and prevent delay in the progress of the work and thereby aid in attaining economy of manufacture.

It is to be understood that my invention may be embodied in constructions other than that herein shown without departing from the spirit thereof.

What I claim is:

1. In a machine of the class described, the combination of means for feeding the work, means for applying a reenforcing tape thereto, means for cutting the tape, means for holding the work until the cutting operation occurs and means for operating said holding means.

2. In a machine of the class described, the

combination of means forfeeding the work, means for applying a reenforcing tape thereto, means for cutting the tape at the will of the operator, means for holding the work, means carried by said cut-ting means for rais ing said feeding and said tape-applying means and means for operating said holding means until the cutting operation occurs.

3. In amachine of the class described, the combination of means for feeding the work, means for pressing a reenforcing tape down upon the work, means for cutting the tape at the will of the operator, said means being provided with means for raising said feeding and pressing means from the work to permit the cutting operation, and means for holding the work when. said feeding and pressing means are raised and until the cutting operation occurs.

4. In a machine of the class described, the combination of means for feeding the work, means for pressing a reenforcing tape down upon. the work, means for cutting the tape at the will of the operator, said cutting means being provided with means for raising said feeding and pressing means from the work during the cutting operation, and means controlled bysaid cutting means for holding the work until the cutting operation has been completed.

5. In a machine of the class described, the combination of means for feeding the work including a reenforcing tape, means for pressin" said reenforcing tape on the work, means for cutting said tape at the will of the operator close to the work, said cutting means being provided with means for raising the feeding and pressing means from the work during the cutting operation, a clamp for holding the work until the cutting operation has been completed and means for throwing said. clamp into operation on the forward movement of said cutting means.

6. In a machine of the class described, the

combination of means for feeding the work together with a reenforcing tape, means for pressing said tape down upon the work, means for cutting said tape at the will of the operator close to the work, said cutting means being provided with means for raising said feeding and pressing means to permit the cutting to take place in advance of said feeding means, and a clamp for holding the work; said clamp being automatically thrown into operation by the said cutting means on its forward movement.

7 Q In a machine of the class described, the combination of means for feeding the work including a reenforcing tape, means for pressing said tape onto the work, means for cutting said tape at the will of the operator, a clamp pivotally mounted and normally inoperative and means operated on the forward movement of said cutting means for moving said clamp pivotally to operative position to hold the work until the cutting operation has been eliected.

8. In a machine of the class'described, the combination of means for feeding the work including a reenforcin g tape, means for pressing said tape to the work, means for cutting the tape at the will of the operator, said cutting means being provided with means for raising said feeding and said pressing means to permit the tape to be cut, and means for holding the work while said feeding and pressing means are raised and until the cutting operation has been completed.

9. Ina machine of the class described, the combination of means for feeding the work and. a reenforcing tape, means for pressing said tape to the work, means for cutting the tape, means for raising said feeding and pressing means to permitthe cutting operation under or in advance of said feeding means, and means operated on the forward movement of said cutting means for holding the work while said feeding and pressing means are raised and until said cutting has been completed.

. 10. In a machine of the class described, the combination of means for feeding the work and a reenforcing tape, means for pressing said tape to the Work, means for cutting the tape, means for raising said feeding and pressing means to permit the cutting operation in advance of said feeding means and a clamp operated on the forward movement of said cutting means for holding the work while said feeding and pressing means are raised and until said cutting operation.

11. In a machine of the class described, the

combination of means for feeding the Work and a reenforcing tape, means for pressing said tape to the work, means for cutting the tape, means for raising said I feeding and pressing means to permit the cutting operation in advance of said. feeding means, a .p1v

otally mounted clamp, means for holding said clamp normally in an inoperative position and means operated on the forward movement of said cutting means for moving said clamp to operative position to hold the work when said feeding and pressing means are in a raised position and until the cutting operation.

12. In a machine for the class described, the combination. of means for feeding the work and a reenforcing tape, means for pressing said tape to the work, means for cutting the tape, means for raising said feeding and pressing means to permit the cutting operation in advance of'said feeding means, a pivotally mounted clamp, a spring for holding said clampnormally in an inoperative position and means operated on the forward movement of said cutting means for moving said clamp to operative position to hold the work when said feeding and pressing means are in a raised position and until the cutting operation.

13. In a machine of the class described, the combination of means for feeding the work and a reenforcing tape, means forpressing said tape to the work, means for cutting the tape, means for raising said feeding and pressing means to permit cutting the tape in advance of .said feeding means, a rotatable member, a clamp fixed on said member, a spring for holding said clamp normally in an inoperative position, means carried by said cutting means for operatingsaidrotatable member. to move said clamp into position to hold the work when said feeding and pressing means are raised to permit a cutting operaion and until the cutting occurs.

1 1. In a machine of the class described, the combination of means for-feeding the work to be reenforced and a reenforcing tape,

means for pressing said tape onto said work,

means for cutting said tape, said means being normally inoperative but adapted to be thrown into operation to cut the tape at the will of the operator, means normally inoperative for holding the work, means carried by said cutting means for moving said holding means into operative position on the forward. stroke of said cutting means and means for returning said holding means to inoperative position during the cutting of the tape.

15.- In a machine of the class described, the I combination of means for feeding the work, means for pressing down a reenforcing tape upon the work, normally inoperative means for cuttingthe tape at the will of the operator, means for moving said feeding and pressing means out of the way to permit the tape to be cut in advance of the initial-point of feeding, said moving means being actuated by the operation of said cutting means, and means for holding the Work from the time that the feeding and pressing means are moved. out of the way until the tape is cut.

16. In a machine of the class described, the combination with feeding and pressing means of a tape cutting mechanism normally inoperative but adapted to be moved transversely to the normal line of feed to cut,

means n'ormall ino erative for holdin they work, and means whereby said holding means is thrown into operation on the forward movement of said cutting mechanism to hold the work until the cutting operation.

17. In a machine of the class described, the

combination with feeding and pressing means of a tape cutting mechanism normally inoperative but adapted to be moved longitudinally and to cut at the end of its forward stroke, a normally inoperative clamp for holding the work during the forward stroke of said cutting mechanism, and means for releasing said clamp just before the end of said forward stroke.

18. In a machine of the class described, the combination with feeding and pressing means of a tape cutting mechanism normally inoperative but adapted to be moved longitudinally and to cut at the end of its forward stroke, a clamp pivotally mounted and normally inoperative, means controlled by said cutting mechanism for throwing said clamp into operation to hold the work during the forward stroke of said mechanism and means for returning said clamp to inoperative position just before the end of said forward stroke.

19. In a machine of the class described, the combination with feeding and pressing means of a tape cutting mechanism normally inoperative but adapted to be moved into cutting position and to cut at the end of said movement, a clamp for holding the work during said movement and means for releasing said clamp ust before the end of said movement.

20. In a machine of the class described, the combination with feeding and pressing means of a tape'cutting mechanism normally inoperative but adapted to be movedv into cutting position and to out at the end of said movement, a clamp, a spring for holding said clamp in a normally inoperative position, means for throwing said clamp into operative position to hold the work during the forward movement of said cutting mechanism,and means for releasing said clamp ust before the end of said movement to permit said spring to return said clamp to inoperative position.

21. In a machine of the class described, the combination with feeding and pressing means of a tape cutting mechanism normally inoperative but adapted to be moved into cutting position and to out at toe end of said movement, a clamp pivotally mounted, a spring for holding said clamp normally in an inoperative position and a cam carried by said cutting mechanism for turning said clamp pivotally into position to hold the work whenever said mechanism is moved to cutting position, said cam being shaped to release said clamp just before the end of said movement.

22. In a machine of the class described, the combination with feeding and pressing means of a tape cutting mechanism normally inoperative but adapted to be moved into cutting position and to cut at the end of said movefor holding said clamp normally in an inop' erative position, a cam carried by said cutting mechanism for turning said clamp pivotally into position to hold the work whenever said mechanism is moved to cutting position, said cam being shaped to release said clamp just before the :end of said movement and being adjustable to vary the time when said clamp is released. I

23. In a machine of the class described, the combination of a feed foot for feeding the work, said feed foot being provided with a through-anctthrough recess parallelto the normal line of feed and open at the bottom and a pressing member located in advance of said feeding member and provided with an extension having a sharpened downwardly pr ojecting gripping end curved on its under race projecting into said recess in said feeding member for holding the work between the feeding movements.

24. In a machine of the class described, the combination of a feeding member provided with a recess open at the bottom and apressing member having an extension projecting into said recess for holding the work between the feeding movements.

25. In a machine of the class described, the combination of a feeding member with an open bottomed recess and a pressing member having an extension projecting into said recess and provided at its end with a downwardly pro ecting gripping edge for engaging and holding the work between the feeding.

movements.

26. In a machine of the class described, the combination with feeding and pressing means having interlocking work engaging surfaces of means for operating said feeding and pressing means whereby one or the other of them is always in engagement with the work and said pressing means serves to hold the work between the feeding movements of said feeding means.

27. In a machine of the class described, the combination with feeding and pressing means of means for operating both said means whereby one or the other of them is always in engagement with the work in the normal ope *ation of the machine; said feeding and pressing means having interlocking work engaging surfaces adapted for engaging the work at approximately the same initial point and said pressing means serving to hold the work between the feeding movements of said feeding means.

In witness whereof, I hereunto set my hand this fourth day of February, 1927.

rnannnrok s. GLINES.

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