US2168471A - Machine for taping shoe parts - Google Patents

Description

Aug. 8, 1939.

MACHINE FOR TAPING SHOE PARTS Filed June 11, 1937 s Sheet s-Sheet 1 Kw; w v

F. L. CORSON 2,168,471 r -Aug. 8, 1939. CQRSON 2,168,471

MACHINE FOR TAPING SHOE PARTS Filed June 11, 1937 SSheets-Sheet 2 Aug. 8, 1939. F. CORSON MACHINE FOR TAPING SHOE PARTS Filed June 11, 1937 3 Sheets-Sheet 3 Patented Aug. 8, 1959 v UNITED STATES PATENT OFFICE MACHINE FORTAPING SHOE PARTS Fred L. Corson, Rochester, N. H., assignor to United Shoe Machinery Corperation, Paterson, N. 3., a corporation of New Jersey Application June 11, 1937, Serial No. 147,611 8 Claims. (01. 1251) This invention relates to machines for taping mechanism for holding the tape stationary and shoe parts and is herein illustrated as embodied cutting it off;

in a machine organized to cut off from a strip of Fig. 8 is a view illustrating details of the tapeindeterminate length a measured piece of adheholding and cutting mechanism; sive strengthening tape and apply it in prede- Fig. 9 is a sectional view on the line IX-IX of 5 termined position to the marginal portion of a Fig. 8; shoe part, spaced inwardly from the edge thereof. Fig. 10 is a view illustrating details of the tape- An object of the invention is to provide a shoe feeding mechanism; and part taping machine which shall operate more Fig. 11 is a sectional View on the line XI- XI 10 rapidly and accurately than machines heretofore of Fig. 10. 10 used for this purpose while requiring the exercise All of the operating mechanism of the machine of no particular skill by the operator, thus reducis mounted in or upon a base or frame 2% which ing materially the cost of the taping operation is adapted to be bolted down on a bench. The and producing work of improved quality. movements of the various operating parts are all 15 A feature of the invention consists in the com-- derived from a main shaft 22 which is journaled l5 bination with tape feeding mechanism and an in bearings 24, 26 mounted upon the frame, power elongated presser member which operates to apfrom a driven pulley 28 being supplied to the ply an entire length of tape to a shoe part at one shaft through a one-revolution clutch 30 contime of means for guiding a projected length of trolled by a treadle rod 32 g tape accurately to applying position upon the Journaled in a bearing 35 in the machine 30 shoe part prior to its application thereto by the frame is a transverse shaft 36 to the rear end of presser. In the illustrated machine the guiding which is fixed a gear 38 meshing with a similar means is yieldingly mounted upon the presser gear 11: fixed to the main shaft 22. Secured to member itself and acts to hold the Work piece the front end of the shaft 3G is a crank disk t2 down flat upon a work supporting table while the having a crank pin M connected by a connecting tape is being applied thereto. rod it to a slidable block tit which is arranged Another feature resides in a combination of for up and down adjustment in an arcuate slot work piece positioning guides and tape severing 58 formed in a swinging arm 52. The arm 52 tools so related to each other that the severed is movable about a pivot 54 which is mounted in end of a piece of tape after it has been applied to the frame it and the said arm bolted to it a Work piece terminates a predetermined dis a bracket 55 which provides bearings for a rotance within the adjacent boundary of the work tatable screw 5% to the lower end of which is piece, thereby eliminating any necessity for an fixed a pinion 60. The pinion 6E] meshes with operator to trim the end of the tape even with or a gear 62 fixed to a shaft 64 which is journaled short of the edge of the work. in a bearing 66 in the arm 52 and has secured to 35 These and other features of the invention, and its front end a hand crank 68. advantages to be derived from its use, will be The screw 58 is threaded through a nut 16 better understood a d appreciated from reading which constitutes a part of the sliding block it the following detailed description of a practical and upward or downward adjustment of the 41 embodiment thereof in connection with the acsaid block relatively to the arm 52 may be efcompanying drawings, in which fected by rotating the screw by means of the Fig. 1 is an angular view of the machine as seen hand crank 88. It will be understood that rotafromthe front; 7 tion of the crank disk 42 will cause the arm Fig. 2 shows a work piece with reenforcing 52 to be swung back and forth through an angle, 45 tapes as applied by the machine; the magnitude of which is determined by the Fig. 3 is an'angular view of the machine as distance of the block 48 from the fulcrum 6t. seen from the rear; To the upper end of the swinging arm 5?; is

Figs. 4 and 5 are, respectively, side elevation pivoted at 12 a link M the other end of which and end views of a tape-guiding and holding deis pivotally connected at 16 to a feed slide 18 '50 vice through which the tape passes as it comes guided for movement along stationary ways till.

off the tape-supplying roll; The feed slide includes a block 82 movable be- Fig. 6 is a view partly in end elevation and tween the ways Bil and extending down to the partly in section of the work holder and tapelower edge thereof. Pivotally mounted on the applying presser; slide at 84, beneath the block 82, is an upwardly .513 Fig. 7 is a View similar to Fig. 6 showing the extending toothed feed dog 86 which is so related to the block 82 that the tape 88 will be seized between the forwardly directed teeth 90 upon the dog and the under side of the block when the feed slide is moved to the left as viewed in Figs. 1 and 11 to feed the tape forward a measured distance determined by the setting of the block 48 and the resulting length of travel of the upper end of the arm 52.

The tape is obtained from a tape-supply roll 92 which is carried by a stationary bracket 94 mounted upon the frame 20. From the roll the tape passes through a guide 96 which is best shown in Figs. 1, 4 and 5. The guide 96 is secured to the frame 20 by screws 98 and pivotally mounted beneath it at I is a tape-holding dog I02 having forwardly directed teeth which engage the under side of the tape and hold the tape against the guide 96. The pivot I00 is surrounded by a torsion spring I04 one end of which is anchored at I06 and the other end of which engages the dog I02 at I08, the spring being so wound that it tends to hold the dog up against the tape. The function of this device is to permit the tape to be drawn forward from the supply roll but to prevent it from being pulled back.

Secured to the sides of the guideways 80 are plates I I 0 having at their lower edges flanges I I2 which are turned inward beneath the ways 80, as shown in Figs. 9 and 10, the flanges being spaced a short distance below the lower edges of the ways to provide a space which constitutes a guideway for the tape. Across the left-hand end of the member 80 is arranged a bar I I4 having through it a slot II6 through which the tape may emerge. Just before reaching the slot N6, the tape passes over a supporting roll I I8 which assures that the tape will be guided accurately to the slot.

After emerging from the slot II6, the tape passes over a stationary blade I20 which cooperates with a movable blade I 22 to form a shear couple by which the tape is cut off, as will be described hereinafter.

Mounted upon a bracket portion I24 of the frame 20 is a work-supporting table I26 upon which a work piece such as the shoe part I28, illustrated in Fig. 2, may be positioned and held while the tape is fed out upon it and applied to it by pressure. A back gage I30 for determining the position of the rear edge of the work piece is adjustably secured to the table I26 by screws I32 which pass through slots I34 in brackets I36 secured to the gage.

A side gage I38 against which the edge of the work piece may be positioned in the direction of the tape feed extends upward from an angular member I40 which is detachably secured to the work table I26 by a thumb screw I42 (see Figs. 2 and 6).

After being projected out over a work piece positioned upon the table I26 and cut oif, the entire piece of tape, the adhesive side of which faces downward, is applied to the work piece at one time by an elongated presser I44 which is secured by screws I46 to a presser arm I48 movable about a horizontal pivot I50 supported in brackets I 52 arising from the rear corner of the work table supporting bracket I24.

Also movable about the pivot I50 is an arm I54 between the forward end of which and the arm I48 is interposed a compression spring I56. Pivotally connected to the arm I54 at I58 is a link I60 the lower end of which is connected at I62 to a cam lever I64. The front end of the cam lever I64 is pivotally mounted at I66 in the machine frame and upon its rear end portion is formed a flat surface I68 adapted for engagement with a cam I secured to the main shaft 22. A pull spring I12, attached at its upper end to the bracket I52 and at its lower end to the cam lever I64, holds the lever in engagement with the cam at all times and when the cam is rotated from the position shown in Fig. 3 to that shown in Fig. 6 it is apparent that the presser I44 will descend and press the tape into contact with the work piece, with pressure which is yielding by reason of the interposition of the spring I56 between the arms I48 and I54.

In order so to guide the tape after it has emerged from the slot H6 and is being projected out over the work piece that it will be accurately deposited upon the work piece a predetermined distance within the adjacent boundary thereof, and also in order to clamp and hold the work piece fiat upon the table I 26 while the tape is moving out over it, plates I14 are provided, one on each side of the presser I I4. The plates I14 are secured to saddles I 16 which are vertically movable upon pins I18 fixed in the presser I44. These pins are surrounded by compression springs I80 which normally hold the plates I14 down, thus providing a guide channel for the tape, but yield to permit the presser I44 to continue to descend after the lower edges of the said plates engage the work piece I28. By thus engaging and bearing upon the work piece the plates I 14 clamp and hold the latter down upon the work table I26.

In order to cut off the projected tape before it is applied to the work piece by the presser I44, provision is made for actuating the upper shear member I22 at the proper time. The shear member I22 is secured to a lever I82 which is movable about a stationary pivot I84 and has its rear end connected by a link I86 to a cam lever I88 having a fiat surface I90 arranged to be engaged by a cam I92 secured to the main shaft 22. The forward end of the cam lever I88 is movable about the pivot I66 and the lever is drawn downward into engagement with the cam I92 by a pull spring I94 the lower end of which is anchored at I96 to a bracket I98 bolted to the machine frame.

Between the link I86 and the pivot I84 the shear lever I82 is connected by a link 200 to the rear end of a lever 202 movable about a stationary pivot 204 and having secured in its forward end a pointed pin 206 adapted to penetrate the tape and hold the latter positively against movement in either direction while it is being cut off and the feed slide is being retracted for the feed dog 86 to obtain a fresh grip upon the tape ready for the next feeding operation.

The lower portion of the bar shown at 208 (Figs. 1 and 8) so that when the edge of the work piece I28 is positioned against the wall of the recess the work piece will be so located with reference to the shear member I20 that the severed end of the cut-off piece 2I0 of tape when it is applied to the work piece will terminate within the edge of the latter, thereby eliminating any necessity for an operator to trim the end of the tape even with, or short of, the edge of the work.

The timing of the various mechanisms is such that the tape is first projected out between the guide plates I14 upon the work piece, next penetrated by the pin 206 and held while it is cut off, and then pressed firmly into adhesive contact with the work piece by the presser I 44. Finally the machine stops with all of the operating instrumentalities retracted to permit removal of H4 is recessed as the work piece to which the tape has been applied.

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

1. In a machine for taping shoe parts, the combination of mechanism for projecting a measured length of tape over a shoe part, pressing means for applying the entire length of the tape to the shoe part at one time, and means for guiding the length of tape continuously by its edges as it is projected to applying position and prior to the operation of the pressing means.

2. In a tape applying machine, the combination of a work support, a tape applying presser mounted for vertical movement above the work support, yieldingly mounted work clamping members extending uninterruptedly along the sides of the presser, and means for projecting a tape between the clamping members, said members constituting means for continuously guiding the tape to applying position beneath the presser.

3. In a tape applying machine, the combination of a work support, an elongated tape applying presser mounted for movement \toward the work support, a pair of elongated work clamping plates, each extending uninterruptedly along its respective side of the presser, said plates and presser being arranged to form a continuous tape guiding channel, and means for projecting a measured length of tape into said channel beneath the presser.

4. In a tape applying machine, the combination of a support for a shoe part, means for projecting a measured length of tape upon a shoe part on the support, continuous means extending along both edges of the length of tape for so guiding it while it is being projected'that it will be accurately deposited in applying position, a tape applying presser, means for operating the presser, and means for severing the length of tape after it is projected and beiore the presser operates upon it.

5. In a tape applying machine, the combination of a work support, gaging means for positioning a shoe part accurately upon the support, tape applying mechanism, means for projecting a measured length of tape upon the positioned shoe part, and tape severing means so related to said gaging means that the length of tape severed thereby will terminate a predetermined distance within the adjacent boundary of the shoe part.

6. In a tape applying machine, the combination of a work support, gaging means for positioning a shoe part accurately upon the support, tape applying mechanism, and means for projecting and guiding a measured length of tape upon the positioned shoe part, said tape projecting and guiding means and said gaging means being so related that the length of tape will be deposited upon the shoe part a predetermined distance within the adjacent boundary thereof.

7. In a tape applying machine, a tape applying presser, means for yieldingly operating the presser, and a tape guide extending uninterruptedly lengthwise on both sides of the presser and mounted yieldingly thereon.

8. In a tape applying machine, a combination tape applying presser, tape guide, and work clamp, comprising a presser which is at least as long and as wide as the length of tape to be applied, a pair of uninterrupted plates, each extending along its respective side of the presser for substantially the full length of the presser, the edge portions of said plates normally pro- J'ecting past the tape engaging face of the presser to form therewith a complete tape guiding channel, saddles joining said plates together, and yielding spring connections between said saddles and the presser, whereby h Plates are carried y the presser and can yield relatively thereto when the edges of the plates engage a work piece prior to pressing engagement of the presser with the p L. CORSON.

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