US2273346A

US2273346A - Taping machine

Info

Publication number: US2273346A
Application number: US343816A
Authority: US
Inventors: Rouel R Campbell
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1940-07-03
Filing date: 1940-07-03
Publication date: 1942-02-17
Anticipated expiration: 1959-02-17

Description

Feb. 17, 1942. R CAMPBELL 2,273,346

TAPING MACHINE Filed July 5, 1940 5 Sheets-Sheet 1 5M 40 Flgtl. 35 A 333 /fl2 k9 g Feb. 17, 1942. R. R. cAMPELL TAPING MACHINE Filed July 3, 1940 5 Sheets-Sheet 2 Feb. 17, 1942. R. R. CAMPBELL TAPING MACHINE Filed July 3, 1940 5 Sheets-Sheet 3 Feb. 17,1942. CAMPBELL 2,273,346

TAPING MACHINE Filed July 3, 1940 5 Sheets-Sheet 4 358 F1g18.

R. R. CAMPBELL TAPING MACHINE Feb. 17, 1942. 2,273,346

Filed July 5, 1940 5 Sheets-Sheet 5 FigrlZ.

Patented Feb. 17, 1942 TAPING MACHINE Roucl R. Campbell, Lynn, Mass, assignor to United Shoe Machinery Corporation, Borough of Flemington, N. 1., a corporation of New Jersey Application July 3, 1940, Serial No. 343,816

31 Claims.

This invention relates to taping machines and, more particularly to machines for applying edge binding by adhesive to work pieces such as insoles used in so-called open-shank shoes as in the machine illustrated and described in Letters Patent of the United States No. 2,224,139, granted December 10, 1940, on an application filed in my name, and one of the objects of my invention is to provide an improved taping machine of the type described in that patent.

In applying tape or edge binding to insoles difficulty is sometimes encountered in securing the tape firmly to the edges particularly around in-curved portions and in causing the tape to be adhered firmly to opposite faces of the soles at the shank portions which are often of considerable thickness. This trouble is partly due to the fact that the toe end of the hammer which presses the tape against the work in cooperation.

with an anvil in some cases strikes the thickened shank portion before the tape has been pressed firmly into engagement with the work adjacent the edge. To overcome this difficulty and in accordance with a feature of the invention, the

hammer is pivoted adjacent to its toe end and v the heel end of the hammer is pressed downwardly under the influence of a spring with sufficient force so that the heel end of the hammer face engages the work at the edge thereof and exerts a wiping action on the tape whereby it is progressively applied to the face inwardly from the edge, the length of the hammer face being such that the toe end will not engage the high-' est portion of the thickened shank portion of the insole. In order to accommodate work pieces of different thicknessesas well as binding tapes of different widths, provision is made for adjusting the locus of the stroke of the hammer both heightwise and widthwise of the work.

It is desirable that the machine be capable of applying tapes of different widths as may be required for different types of work, and also that the relative amounts of tape applied to the opposite faces of the Work may be varied.

Accordingly, in accordance with a further feature of the invention, the machine is provided with tape guides through which the tape passes to the instrumentalities for folding the tape around the edge of the work and applying the tape to the Work, these tape guides being indiconclusion of a taping operation, a knife is provided, and better to sever the tape with a clean out and not leave any ragged edges, a shear block is arranged to cooperate with the knife, the tape passing over the shear block to the tape applying instrumentalities. Presentation of the tape to the tape applying instrumentalities after the tape has been severed by the knife, is effected by a slidable tape presenter which must be moved prior to the operation of the knife to its retracted position in order that a piece of tape of sufficient length will project therefrom after the tape has been severed, to initiate a subsequent taping operation. To this end and as a further feature of the invention, the means for moving the tape presenter to its retracted position controls a clutch by which the knife is connected to a constantly driven part of the machine so that when the tape presenter has moved to its retracted position, the knife will be operated to sever the tape, It may be desirable tovary the length of tape presented to the work at the beginning of a subsequent taping operation, and this adjustment is readily made, in accordance with a further feature of the invention, by providing an adjustable lost motion connection between the tape presenter and the means by which it is moved to vary the retracted position of the tape presenter without varying the tape applying position thereof. This lost motion connection is also utilized to interrupt the operation of the knife prior to the beginning of the movement of the tape presenter from its retracted position toward the tape applying instrumentalities.

As a further feature of the invention, means are provided for maintaining the tape tacky as it passes to the tape applying instrumentalities so that the adhesive thereon will be in a condition to cause the tape to adhere firmly to the work as it is pressed thereagainst.

These and other features of the invention will now be described in the specification and illustrated in the accompanying drawings, in which Fig. l is a front elevation of a machine in which the invention is embodied with a portion of the frame broken away to illustrate the mechanism within;

Fig. 2 is a vertical section on the line II-II of Fig. 1 to show the clutch brake} Fig. 3 is a rear elevation of the head of the machine on a larger scale than Fig. l, certain parts being shown in section;

Fig. 4 is a sectional detail view of the mechanism for adjusting the operation of the hammer;

Fig. 5 is a view illustrating a modified form of a hammer;

Fig. 6 is a plan view of the mechanism for presenting tape to the tape-applying instrumentalities;

Fig. '7 is an angular view of the tape presenter illustrating its relationship to the sole gage;

Fig. 8 is a plan view of the knife-operating mechanism;

Fig. 9 is a front elevation of the operating head of the machine, certain parts being broken away;

Fig. 10 is an end elevation of the operating head of the machine;

Fig. 11 is a detail view illustrating the cam for controlling operation of the tape-cutting knife;

Fig. 12 is a vertical section on the line XII-XII of Fig. 3; and

Fig. 13 is a vertical section on the line XIII-XIII of Fig. 3.

The machine as illustrated is a bench type machine and includes a base i0 (Fig. 1) mounted on a support II, the base It having a laterally extending arm IZ in the outer end of which is supported the tape-applying mechanism to be described. A head I4 is pivoted at It to the base l0 and has an arm l8 overhanging the arm I2, the outer end of the arm l8 being enclosed by a plate 20.

A support 22 (Figs. 6 and 7) is secured by screws 24 to the outer end of the arm l2 and forms the support upon which a tape presenter 26 is slidably mounted. The tape presenter 28 is formed of two parts located on opposite ends of a vertical wall portion 28 of the support 22 and includes a heating block 30 (Figs. 6, 7 and 13) having a reduced portion 3! (Fig. 13) slidably received by a channel in the wall 23 (Fig. 13). An electrical heating unit 32 is secured in the heating block 30 by a screw 36 (Fig. 6) and is connected by means of conductors passing through a fitting 36 (Fig. 10) to a suitable source of power. The other part of the tape presenter is in the form of a guide 38 (Figs. 6, 7 and 13) secured by screws 4!) to the rearward end of the heating block 30. Since the wall 28 separates the heating block 39 and the guide 38 from one another at their forward portions, a slot 42 (Fig. '7) is provided in the wall 28 to receive slidably a heat conducting disk 44 (Fig. 13) through which the forward end of the guide 38 is connected to the heating block 3!! by screws 45. By this arrangement the forward end of the guide 38 is maintained at a sufliciently high temperature by the heating block 30 to keep the adhesive on the tape in a tacky condition.

As indicated in Fig. 13 the tape guide 38 is channel-shaped in vertical section and to the lower horizontal wall of the tape guide is pivotally supported a clamping member 50 (Figs. 6, '7 and 13) which is arranged to permit forward movement of the tape relative to the guide while preventing movement of the tape relative to the guide in the opposite direction and which also maintains the tape in engagement with the vertical wall of the guide so that the tape is kept heated thereby. The clamping member is pivoted on a screw 52 and. has a clamping face 54 which is maintained in engagement with the adjacent provided with a threaded extension 66 by which it is threaded into the lower wall of the guide 38. The pin 58 by which the spring 56 is secured to the clamping member 58 has a h0rizontally extending finger piece for facilitating retraction of the clamping member 50 about the pivot 52 when it is desired to move the clamping face 54 of the clamping member out of engagement with the tape.

Guideways m and 72 (Fig. '7) are adjustably secured to the forward end of the guide 38 by screws M and T6 passing through slots in

vertical portions

78 and 88 respectively of the guideways. These guideways extend forwardly from the guide 38 in the direction of feed of the tape to guide the tape until it engages the work to the edge of which the tape is to be applied. These guideways are independently adjustable vertically to accommodate tapes of different widths as well as to vary the relative amounts of tape applied to opposite faces of the work by varying the heightwise position of the tape relative to the work as the tape passes thereto. Guide pins 82 and 84 (Figs. 3 and 6) extend horizontally from the rear end of the heating block 38 to engage the opposite edges of the tape and are mounted for vertical adjustment by means of

brackets

86 and 88 the positions of which are determined by the

screws

90 and 92 respectively, whereby these guide pins may be lined up properly with the guideways i0 and 72 to permit proper feeding of the tape to the guideways. A roll 9 1 secured by a bracket 96 to the heating block 30 is arranged to support the tape as it travels from the rear end of the heating block to the face of the guide 38. The tape, prior to reaching the heating block 38, may have a coating of hot adhesive freshly applied to the surface thereof by a coating device of the type illustrated in application Serial No. 323,973 filed on March 14, 1940 in my name.

The tape presenter 26 is arranged to be moved rearwardly or away from the tape-applying mechanism at the conclusion of a taping operation and prior to severing of the tape by mechanism to be described, the guide 33 moving rear- Wardly relative to the tape at this time, and moving in the opposite direction at the beginning of a taping operation to present the end of the tape to the work. The tape presenter is arranged to be moved by a rod Hi9 (Figs. 1 and 3) which is mounted for slidable movement in the overhanging arm I3 and is provided with a depending pin :92 passing through a slot in the lower surface of the arm i8 and engageable between spaced stops Hi4 and Ill-8 (Fig. 6) mounted on the upper surface of the heating block 30. The rod Hill by which movement is imparted to the tape presenter is arranged to be moved a predetermined amount by the operator in one direction or the other and in order that the extent of the movement of the tape presenter may be varied, these stops, one of which is adjustable as will later appear, provide an adjustable lost motion connection between the pin I02 secured to the rod H30 and the presenter. It is desirable that the forward or operating position of the tape presenter always be the same, and accordingly, the stop I94 includes a supporting plate I08 secured by screws H0 to the top of the block 3!]. The stop I55 is pivotally secured to the block 30 and within a recess in the under side of the plate I {28 by a pin H2, this stop having a shoulder H3 projecting upwardly through an aperture in the plate and engaging the end of a screw H4 threaded through a bracket H5 exadj acent the tape-applying tending upwardly from the plate I08, the screw being adjustably secured in place by a lock nut I I8. It will be understood that the amount of lost motion between the pin I02 and the stops I04, I06 may be varied by adjusting the screw II4 so that when the rod I00, by which motion is imparted to the tape presenter, is in its fully retracted position, the retracted position of the tape presenter will depend upon the adjustment of the stop I06 by the screw II4. Since the stop I04 is not adjustable, the tape presenter will always be moved to a predetermined position instrumentalities upon movement of the rod I to the left as viewed in Fig. 1. Further to insure the proper position of the tape presenter when in tapeapplying position, the vertical plate 20 has a portion I20 (Figs. 6 and 9) arranged to be en gaged by a shoulder I22 of the heating block 30.

In order tofold the tape about the edge of the work such as a sole S (Fig. 9), a work folder I24 having a U-shaped recess I25 (Fig. 7) is provided, the tape being pressed into this recess by the pressure of the .work thereagainst and the horizontal portions of this recess causing the tape to be folded around the edge of the work as shown in Fig. 9. The lower end of the folder I24 has a horizontal extension I28 (Fig. 1) received by a groove in the lower surface of the support 22, the folder being maintained in the desired position of adjustment by a set screw I30.

In order to sever the tape at the conclusion of a taping operation, a knife I30 having a serrated cutting edge and a cooperating shear I block I38 (Figs. 6, 7 and 12) are provided. The

shear block I38 is adjustably secured to the wall 23 by screws I40 passing through slots to provide for adjustment relative to the path of movement of the knife so that it may be secured in proper shearing relation thereto. The knife is arranged to move in a path perpendicular to the plane of movement of the tape through the guide 38 and is connected by an arm I42 to a vertical extension I44 of a horizontally extending knife slide I46 (Fig. 12). The slide I46 is mounted for movement in a plate I50 (Fig. secured by screws I52 and I54 to the outer end of the arm I2. In order to support the knife I30 against lateral movement, guide members I56 and I58 (Fig. 6) are arranged to engage the knife on opposite sides thereof. The guide I50 is formed at the upper end of a bracket I00 adjustably secured to the plate 22 by a screw I62 passing through a slot in a lower horizontal wall of the bracket. The guide I58 is adjustably secured to the bracket I00 by a screw I64 whereby the space between the guides I55 and I58 may be varied, the screw I02 permitting adjustment of the guides relative to the shearing surface of the shear block I38.

The knife slide I40 is provided with recesses (Fig. 8) arranged to be engaged by teeth I63 on an arm I10 which is secured by a bill binder I12 to a reduced portion of a vertical shaft I14 journaled in a sleeve I10 (Fig. 9). The sleeve I16 has an eccentric bore therethrough thus permitting adjustment of the shaft I14 as the sleeve I16 is rotated. The sleeve I10 is provided with a knurled portion I18 extending below the arm I2 at the outer end thereof, for facilitating rotation of the sleeve I16 in order to secure the proper relationship of the arm I10 relative to the knife slide I40. A bill binder I00 secures the sleeve I10 in the arm I2 in the proper position of adjustment. The shaft I14 is'oscillated when it is desired to operate the knife I30, and the arm I10 is maintained in the position shown in Fig. 8 with the knife in a retracted position, by means to be described. A stop screw I82 threaded through the vertical lower wall of the support 22 determines the retracted position of the knife by engagement of the arm I10 therewith.

In order to oscillate the shaft I14 to operate the knife and sever the tape, the lower end of the shaft I14 is provided with a horizontally extending arm I84 (Figs. 8, l0 and 12) in the outer end of which is secured a vertical pin I86 (Fig. 12) provided with an eccentric ball portion I at the upper end thereof, this ball forming a ball and socket joint with the members I90 at one end of a reciprocable driven member I92 (Figs. 3 and 8). The eccentricity of the ball at the upper end of the pin I80 provides for adjustment of the member I02 relative to the arm I84.

The member I02 is provided with a'recess I04 (Fig. 3) arranged to be engaged by a tooth I06 of a driving member I98 secured by a flange I99 to a reciprocable rod 200 which is reciprocated continuously during the operation of the machine, by mechanism to be described. In order to prevent the knife from reciprocating continuously during the operation of the machine, the driven member I94 is normally maintained out of engagement with the driving member I93 so that no motion is communicated from one to the other. For this purpose, the member I92 is slid'ably supported on the spaced arms 204 of a supporting member 200 by laterally extending pins 202 (Figs. 3, 3 and 10). The supporting member 206 is pivoted on a pin 208 (Figs. 3 and 8) secured by a set screw M0 in a bracket 252 extending downwardly from the arm I2. A spring pressed plunger 2I4 (Fig. 3) acts between the supporting member 200 and the under surface of the arm I2 to pivot the supporting member in a clockwise direction as viewed in Fig. 3 to move the driven member I04 downwardly out of engagement with the tooth on the driving member I98, the extent of movement of the supporting member 200 by the spring pressed plunger 2I4 being limited by a stop screw 2H5 threaded through an extension 2I1 of the arm 206 and acting against the arm I2 of the machine. Accordingly, unless the supporting member 200 is pivoted about the pin 208 against the force exerted by the spring pressed plunger 2I4, the driven member I92 is maintained out of engagement with the driving member I90 so that no motion is imparted by the reciprocation of the rod 200 to the knife I36. In order to retain the knife in its retracted position while it is not in operation, a spring 220 (Figs. 3 and 10) I is connected between a depending arm 22 2 of the supporting member 206 and a screw 224 threaded into the under surface of the driven member I92 and projecting downwardly between the arms 204 of the supporting member. The spring 220 acts to maintain the driven member I92 in the position illustrated in Fig. 3 when the knife is not in operation, and thus maintains the knife in its retracted position with the arm I10 (Fig. 8) in engagement with the stop screw l82.

The control of the knife operation is coordinated with the movements of the tape presenting member 26 so that the knife will not be operated until the tape presenter, is in its fully retracted position, which is determined by the adjustment of the stop I06 (Fig. 6), and so that the knife operation will be terminated before the tape presenter starts to move back to operating position. It is desirable to move the tape presenter to its retracted position before the knife is operated in order to avoid interference between the knife and the tape presenter and so that after the tape is severed, a suificient length of tape will project beyond the tape presenter to facilitate the commencement of a subsequent taping operation. Acordingly, the rod I6!) through which movement is imparted to the tape presenter also controls the operation of the knife. The outer end of the rod I is provided with a cam surface 236 (Figs. 3 and 11) which acts upon a lever 232 fulcrumed on a screw 233 in a downwardly extending portion of the plate 20 secured to the outer end of the upper arm I8 of the machine. The adjacent end of the lever 232 is provided with a cam roll 234 which is engaged by the cam surface 230 of the rod I06 at the completion of rearward movement of the rod by the operator, to move the lever 232 in a clockwise direction as viewed in Figs. and 11. The opposite end of the lever is connected by a downwardly extending rod 236 to a lateral extension 238 of the supporting member 266, there being a spring 240 acting between nuts 242 at the lower end of the rod and the under surface of the extension 238 so that as the lever 232 is actuated by the cam surface 230 of the rod I60, the supporting member 266 will be moved with a yielding force in a counterclockwise direction as viewed in Fig. 3 to connect the driven member I 92 and the driving member I98 to cause reciprocation of the kinfe I36. Nuts 244 secured to the rod 236 act against the upper surface of the extension 238 of the support 206 to limit downward movement of the rod relative to the extension.

It will now be understood that as the rod I60 is retracted by the operator, the pin E62 carried thereby will engage the rearward stop I06 to move the tape presenter away from the tape applying mechanism and at the completion of this movement, the cam surface 230 at the end of the rod I00 will cause upward movement of the rod 236 to connect the driven and driving members I92 and I98 to cause operation of the knife. After the tape has been severed, the rod IN) is returned to the position indicated in Fig. 1, the cam surface 236 at the outer end thereof moving out of engagement with the cam roll 234 before the lost motion between the pin I62 and the stops I64 and I06 on the tape presenter is taken up. Accordingly, the operation of the knife will terminate before the tape presenter begins its movement toward the tape applying mechanism so that the leading end of the tape projecting beyond the tape presenter will not be severed as the tape presenter moves back to its operating position. The adjustable stop I66 provides for adjustment of the position of the tape presenter at the time the tape is severed so that the length of the leading end of the tape projecting beyond the tape presenter may be varied as desired.

The tape is applied to the upper and lower surfaces of the work after having first been folded around the edge of the work by the folder I26 as indicated in Fig. 9, by a cooperating hammer and anvil 250- and 252 (Fig. 3). The hammer oscillates toward and away from the anvil and when the hammer is in a position adjacent to the anvil with the tape pressed against the upper and lower surfaces of the work, the hammer and anvil move as a unit to feed the work a short distance. The

anvil is mounted for feeding movement on an arm 254 which is in turn secured by a clamp 256 to the end of a sleeve 253 journaled in the lower arm I2 and arranged to be oscillated by mechanism to be described. The hammer is mounted on the upper end of a lever 256 journaled by means of a pin 26?. (Fig. 4) in an eccentric bearing 264 rotatably mounted in an intermediate portion of the anvil arm 25 3. The lower end of the lever 2&6 is bifurcated at 266 and embraces the reciprocating rod 220 which, as indicated in Fig. 3, passes through the oscillating sleeve 258. The outer end of the rod 2&9 carries a washer 210 which acts to maintain the bifurcated end 266 of the lever 266 in engagement with the .flange I99 by which the member I98 is secured to the rod. A spring 212 acts against the washer 276, the other end of this spring acting against an abutment 2'54 fitted into a sleeve 216 projecting forwardly from the plate I50 (Fig. 10), the rod 266 projecting through the abutment 214 and carrying nuts 278 in engagement with the outer surface thereof. As the rod 206 reciprocates, the hammer moves toward and away from the anvil and since the connection between the rod 200 and the hammer includes the spring pressed washer Z'lil, compensation is automatically made for variations in thickness of the work. The effectiveness of the spring 272 may be varied by adjusting the nuts 278 which are readily accessible at the outer end of the machine. The mounting of the hammer on the anvil arm 254 causes movement of the hammer and anvil as a unit when the sleeve 258 oscillates to impart a feeding movement to the work.

The eccentric bearing 26 (Fig. 4) which supports the pin 252 forming the fulcrum for the lever 260 carrying the hammer provides for adjustment of this fulcrum both heightwise of the plane in which the work moves and widthwise of the direction of movement. When operating upon a thick piece of work the fulcrum may be raised by rotating the eccentric bearing 264 and the widthwise adjustment of the pivot pin varies the relationship of the hammer and anvil widthwise as considered in relation to the direction of movement to the work to compensate for variations in the width of tape folded over the upper margin of the work. In order to maintain the bearing 264 in various positions of adjustment, the bearing is provided, as shown in Fig. 4, with an enlarged portion 286 which engages the side of the anvil arm 25 1, this enlarged portion of the bearing being arranged to be grasped by the operator to rotate the bearing and being provided, as indicated in dotted lines in Fig. 3, with a plurality of semi-circular recesses 232 around the edge thereof and adjacent to the arm 25 1 of the anvil. A spring pressed plunger 284 (Fig. 4) is normally urged by a spring 286 into locking engagement with one of the recesses 282. The plunger 284 has a cutaway portion 283 permitting depression of the plunger relative to the portion 280 of the bearing to free the bearing for rotation so that the position of the pin 262 may be varied. A screw 290 threaded into the pin 262 maintains the pin against axial movement relative to the bearing 264.

The hammer 253 is provided with a rib 292 secured by a pivot pin 294 within a groove formed at the upper end of the lever 26!]. A leaf spring 296 engaging the toe end of the hammer and having its other end secured by a screw 298 to the back of the lever 26E! urges the hammer in a counterclockwise direction as viewed in Fig. 3 relative to the lever 260. This arrangement causes the heel end of the hammer to engage the work first so that the tape is first pressed against the work at the edge thereof and as the hammer moves downwardly the work is progressively pressed from the edge inwardly thereof so that the tape is laid smoothly and free of wrinkles against the work. The face of the hammer at the heel end thereof, which is the portion which engages the tape first, is made smooth as indicated to avoid damage to the tape as the hammer slides over the edge of the work, the rest of the surface of the hammer face being roughened and cooperating with the roughened surface of the anvil to grip the Work positively to impart a posi tive feed thereto.

In certain cases where the tape is being applied to insoles having shank portions of considerable thickness, the toe end of the hammer may strike the shank portion and be prevented from properly engaging the edge of the insole to lay the tape smoothly thereon. To overcome this difficulty, a shorter hammer 360 may be provided as illustrated in Fig. 5 and pivoted at the toe end thereof instead of nearly at the center of the hammer as in Fig. 3. In order to exert a sufficient downward force at the heel end of the hammer, a compression spring 302 is positioned between the heel end of the hammer and an adjustable abutment screw 364 threaded through the outer end of the hammer lever 269. Accordingly, th force of the spring is concentrated at the heel end of the hammer so that an effective wiping action on the tape at the edge thereof is secured while the hammer is made only large enough to press the tape throughout the width thereof as it is folded over the edge of the insole without interference with the thick shank portion of the insole so that the tape is wiped over the edge of the insole and effectively pressed thereagainst throughout the entire width of the tape.

In order to facilitate holding the work at the desired level as the tape is pressed against the opposite sides thereof along the edge by the hammer and anvil, presser feet 306 and 358 (Fig. 9) are arranged to engage opposite sides of the work. The lower presser foot 336 is formed as shown in Fig. 10 in two parts 3) and 312 adjustably secured together by a screw 3M. The part 3E0 constitutes a work gripper and is arranged to engage the work inwardly of the margin thereof throughout a small area and the part 3l2 of the presser foot 306 has its upper surface located somewhat below the work engaging portion of the part 310 but somewhat higher than the adjacent horizontal portion of the folder I24 as indicated in Fig. 9. The upper surface of the part 312 of the lower presser foot maintains the edge of the work away from the adjacent surface of the folder I24 to prevent binding of the tape between the lower surface of the work and the adjacent horizontal surface of the folder I24. The portion 3l2 of the lower presser foot is mounted for heightwise adjustment on the plate I50 by screws 316 so as to permit adjustment of the upper surface of the member 3l2 relative to the adjacent horizontal surface of the folder I24.

The upper presser foot 308 is provided with a work gripper 32B adjustably secured to a vertical slide member 322 by a screw 32 3. The work gripper 320 (Figs. 9 and 10) is located directly opposite the work gripper 3 i [I of the lower presser foot and is also arranged to engage the work throughout .a small area only, thus permitting easy feeding movement of the work between the presser feet while they are in contact with the work. As indicated in Fig. 10 the work receiving portions of the upper and lower presser feet flare outwardly to facilitate presentation of a piece of work therebetween.

As stated above, the work gripper 320 of the upper presser foot is mounted on vertical slide 322, and this slide is resiliently urged downwardly toward the lower presser foot so as tohold the work therebetween while compensating for variations in thickness of the work and permitting feeding of the work by the hammer and anvil. The slide 322 is mounted in a dovetail groove in a support 333 (Fig. 7) this support being secured by screws 332 to the wall 28 forming the support for the tape presenter. The upper end of the slide 322 is connected by a link 334 (Fig. 3) to a lever 336 having a downwardly and rearwardly extending arm 338 fulcrumed at 340 between spaced

portions

342 and 344 of the wall 28 (Fig. 13). The lever 336 is provided at its upper and rearward end (Fig. 3) with a laterally extending pin 346 arranged to be embraced by the forked end 348 of a rod 356 slidably mounted in the arm l8 of the head. As the rod 350 is moved rearwardly, or to the left as indicated in Fig. 3, the lever 336 moves about the fulcrum and the forward end of the lever moves upwardly, and through the link 334, causes the upper presser foot 308 to be moved vertically away from the lower presser foot. The rear end of the rod 353 (Fig. l) is connected to one arm of a bell crank lever 352 the other arm being connected at 354 between a forked portion 356 in the arm of a second bell crank lever 35 8, this second bell crank lever being biased in a clockwise direction by a spring pressed plunger 360 against a stop pin 362. The spring pressed plunger 366 accordingly acts to urge the slide 322 downwardly with a yielding pressure so that the upper presser foot forces the work against the lower presser foot under a yielding pressure.

In order to raise the upper presser foot to facilitate the presentation of a new piece of work to the machine, an arm 364 (Fig. 1) pivoted at 366 within the base of the machine is provided with a heel portion 368 arranged to engage the rearward end of the bell crank lever 358 to move this lever in a counterclockwise direction upon upward movement of the arm 364, so as to impart a rearward movement to the rod 352] and an upward movement to the upper presser foot. The arm 364 is connected by a rod 313 with an arm 312 connected to a treadle 314 journaled on a shaft 316 which is in turn journaled in a frame 318 supported on the floor. The treadle rod 32'3 is provided with a collar 380 arranged to engage the upper surface of the arm 312 of the treadle so that as the heel of the treadle 374 is urged downwardly, the rod 310 will move upwardly and through the connections, heretofore described. will cause the upper presser foot to be lifted. Since the pin 346 at the rearward end of the lever 336 (Fig. 3) is received between the forked end 348 of the rod 350, it will be apparent that the head l4 including the neck 18 may be pivoted about the hinges Hi to permit access to the interior of the machine, the rod 350 moving therewith; and since this rod is normally maintained by the spring pressed plunger 360 in its forward position as illustrated in Fig. 1, proper registration of the end of the rod 350 with the pin 346 is assured as the cover is closed.

The rod 200 which is reciprocated to move the hammer toward and away from the anvil receives power'from a shaft 392 journaled in the base of the machine and driven in a manner to be described. The shaft 382 carries a cam 384 which transmits vibratory movement to a forked lever 386 which movement is transmitted through a link 388 and to arms 399 and 392 to the shaft 290. The arms 399 and 392 are journaled on a common pivot rod 394 and are held yieldably in the relation shown in Fig. 1 by a spring pressed plunger 396 within a casing 398 carried by the arm 399 and by a stop screw 399 carried by the other arm 392. By this arrangement the blow of the hammer is softened while the spring 272, heretofore described, compensatesfor variations in the thickness of the stock, the spring 272 being lighter than the spring acting on the plunger 398. A spring 499 is provided between the upper end of the arm 392 and a nut at the end of the rod 299 to take up any slack in the joint between the arm 392 and the rod, this spring being considerably heavier than either of the springs 272 or the spring acting on the plunger 396.

Oscillation of the sleeve 282 for imparting feeding movements to the hammer and anvil is effected by another cam 492 on the driven shaft 382, which cam imparts movement to a forked lever 494 the lower end of which is pivoted to an arm on a rock shaft 496. Similarly secured to another arm on the rock shaft is a link 498 the other end of which is connected to an arm 4I9 clamped on the hollow shaft 292. By this arrangement, oscillation is imparted by the cam 492 to the hollow shaft 292 on which the anvil arm is clamped, and the extent of these oscillations is controlled as in the machine illustrated in Letters Patent of the United States 1,702,598 granted February 19, 1929, on the application of P. R. Glass. by an arm 4I2 extending outwardly through a slot in the casing.

The position of this arm, and consequently the extent of oscillations of the hammer and anvil, is controlled by a treadle 4I4 fixed to the shaft 376, which shaft carries an arm 4I6 extending toward the operator and arranged to have its outer end move upwardly upon depression of the treadle M4 by the toe of the operator. The outer end of the arm 4I6 bears against the under side of a clamping collar 4I8 secured to a. rod 429 which is arranged to move the pin 4I2 upwardly upon actuation of the treadle M4 by the toe' of the operator to increase the length of feeding movements of the hammer and anvil.

The treadle 4I4 also controls the operation of the rod I99 which controls the operation of the knife and the position of the tape presenter. A rod 422 passes through openings in the clamping collar M6 and the outer end of the arm 4I6 which is secured to the shaft 376, the rod 422 having secured to its lower end a collar 424 through which downward movement of the outer end of the arm M6 is imparted to the rod 422. The upper end of the rod 422 is secured to one end of a bell crank lever 426 pivoted in the frame of the machine on the rod 366 in the base of the machine, the other end of the bell crank lever carrying a pin 428 received in a recess in a block 439 secured to the inner end of the rod I99. As the treadle rod 422 is moved downwardly by exerting pressure on the heel end of the treadle 4M, the rod I99 is moved rearwardly to move the tape presenter to its retracted position and connect the knife mechanism to the shaft 299 to sever the tape. The rod I99 is restored to its forward position in which the tape presenter is in its forward posi tion by a spring 442 surrounding the rod 422, the lower end of the spring acting upon the collar M8 and the upper end of the spring acting against a collar 444 secured to the rod 422. This spring therefore acts to urge the rod 422 upwardly to move the knife actuating rod 429 to its forward position. In addition, the spring 442 by acting upon the clamp 4I8 secured upon the lower end of the rod 422, acts to move this rod downwardly to shorten the feeding movements of the hammer and anvil. A stop pm 446 mounted in the base of the machine limits the clockwise movement of the bell crank lever 426 so that this lever will be in the proper position to insure registering of the pin 428 with the block 439 if the head of the machine be opened and then closed. Downward movement of the arm 4I6 connected to the treadle operated shaft 376 to operate the knife relative to the rod 429 which controls the feed is permitted since the rod 422 moves freely through the collar 4I9. Downward movement of the arm 4I2 which controls the feed is limited by a pin 447. Similarly, upward movement of the rod 429 to increase the amount of feed may take place without moving the rod 422, the spring 442 being compressed at this time and the bell crank lever 426 in the machine being maintained against the stop pin 446.

On the shaft 382 is a driven pulley 459 which may be connected to the shaft at the will of the operator by a clutch mechanism' 452 having a trip member 494 pulled to starting position by a treadle rod 456, the operation of the clutch being fully shown and described in Letters Patent of the United States 2,044,501 granted June 16, 1936, upon the application of P. R. Glass. The pulley 459 is connected by a belt 469 to a driving pulley 462 fast on a shaft 464. Loosely mounted on the shaft 464 is a driven pulley 466 having a friction clutch face 469 engageable with the pulley 462 to rotate the pulley 462 upon movement of the pulley 466 to the right. A lever 479 pivoted at 472 has a forked portion 474 engageable with the hub of the pulley 466 as in the Glass patent for moving this pulley to the right as the left end of the lever 479 is pulled downwardly. The left end of the lever I 479 is connected by a rod 476 to an arm 488 connected to the treadle 374 and extending toward the operator. Upon depression of the heel end of the treadle 374 the rod 476 is moved downwardly to move the lever 479 in a counterclockwise direction against the action of a spring 499. The right end of the lever is connected to an arm 492 (Fig. 2) pivoted at 494 in a bracket 496 depending from the table II on which the machine is mounted, one end of the arm 492 being connected to the rod 456 and the opposite end of the arm being connected to a brake 590 acting against a braking surface 592 of the pulley 462 to increase the deceleration of the pulley 462 upon depression of the heel end of the treadle 374.

In the operation of the machine the tape T, which may be coated with a thermoplastic adhesive by mechanism such as is illustrated in my copending application Serial No. 323,973, is fed between the guide pins 82 and 84 at the rear end of the heating block 39, around the roll 94, over the face of the guide 38 and between the uideways 79 and 72 to a position directly in front of the folder I24, where the tape is engaged by the work, such as the sole S which is pressed against the folder as indicated in Fig; 9. The tape is kept warm at this time, so that the adhesive will be in the tacky condition, by the guide 38 which receives heat from the heating block 30 by direct contact therewith at the rear end of the guide, and through the heat conducting disk 45 at the forward end thereof. The tape is fed by the feeding action of the hammer 250 and the anvil 252 which also act to cause the tape to adhere to opposite faces of the work along the edge thereof, the tape having first been folded around the edge of the work by the folder I24 as indicated in Fig. 9. The work is held in position as the tape is applied thereto by the presser feet 3% and 308 After a sufficient amount of tape has been ap I plied to the work. the tape is severed on a line adjacent to the folder I24 by the knife I36 cooperating with the shearing block I558. The knife I36 is placed in operation upon movement of the rod I to the right as viewed in Fig. l by depressing the heel end of the treadle H4. Prior to operation of the knife, however, the rod I60 moves the tape presenter rearwardly or away from the tape applying mechanism, the tape being held against movement therewith by its adherence to the work which is in turn held by the action of the presser feet 3% and 3%. The position to which the tape presenter is moved at this time is determined by the position of the stop I06 (Fig. 6), this in turn determining the length of the free end of tape which is presented by the tape presenter at the beginning of a subsequent taping operation. After the tape presenter has been retracted. to a predetermined position, the cam surface 239 of the rod I09 engages the cam roll 234 causing upward move ment of the vertical rod 236 which connects the knife to the reciprocating rod 280 to reciprocate the knife toward and away from the shear block After the tape has been severed, the pressure on the heel end of the treadle M4 is released whereupon the spring pressed plunger 36!] acting on the bell crank lever 358. causes return movement of the rod IEII) to the position shown in Fig. 1. The first part of this return movement of the rod causes the cam surface 23!! to move .out of engagement with the cam roll 234, to interrupt operation of the knife, during which time no motion is imparted to the tape presenter due to the lost motion between the stops Hi4 and I95, and the pin I02 carried by the rod IGIJ. After the knife has been placed out of operation, further movement of the rod I00 back to its oper-- ating position causes the tape presenter to be similarly moved, and by reason of the action of the clamp 50 carried thereby, the tape moves with the tape presenter so that the free end of the tape will be moved to a position in front of the folder I24, to be engaged by the edge of a new piece of work presented to the machine. To facilitate presentation of a new piece of work, and also to facilitate removal of a piece of work from the machine, the upper presser foot 308 may be raised by the operator by depressing the heel end of the treadle 314. The feeding movements of the hammer and anvil are always under the control of the operator and may be increased by depressing the toe end of the treadle H4, while the machine is connected to the source of power by depressing the toe end of the treadle 374. When the upper presser foot 3% is raised by depressing the heel end of the treadle 314,

the clutch 468 on the pulley 466 is moved away from the pulley 462 to stop the machine so that the action of the hammer and anvil will not impair the presentation of and positioning of a piece of work in the machine.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for operating said knife, means for moving said presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, and means operated by said tape presenter moving means for connecting said knife to said power-driven means after said tape presenter has been retracted to a remote position.

2. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for operating said knife, means for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, and means operated by said tape presenter moving means.

for connecting said knife to said power-driven means after said tape presenter has been retracted to a remote position and for interrupting operation of said knife prior to movement of said tape presenter from said remote position toward said tape-applying mechanism.

3. In a taping machine, tape-applying mechanism, a tape presenter for-directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for operating said knife, means for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, means operated by said tape presenter moving means for connecting said knife to said power-driven means after movement of said tape presenter to said remote position, and means rendered operative by said tape presenter moving means for returning said knife to a retracted position prior to movement of said tape presenter from its remote position toward said tape-applying mechanism.

4. In a taping machine, tape-applying mech-.

anism, a tape presenter for directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for operating said knife, means for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, means operated by said tape presenter moving means for connecting said knife to said power-driven means after said tape presenter has been retracted to a remote position, and means for varying the position to which the tape presenter moves prior to operation of said knife.

5. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for reciprocating said knife, means for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, a lost motion connection between said last-named means and said tape presenter, and means operated by said tape presenter moving means for connecting said knife to said power-driven means after said tape presenter has been retracted to a remote position.

6. In a taping machinatape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for operating said knife, means for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, said lastnamed means being provided with a cam surface, and means controlled by said cam surface for connecting said knife to said power-driven means after movement of said tape presenter to said remote position.

'7. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for reciprocating said knife, means for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, a lostmotion connection between said last-named means and said tape presenter, a cam surface on said last-named means, and means operated by said cam surface for connecting said knife to said power-driven means upon movement of said tape presenter to said remote position.

8. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a tape-severing knife, power-driven means for reciprocating said knife, means for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, a lost motion connection between said last-named means and said tape presenter, a cam surface on said last-named means, means operated by said cam surface for connecting said knife to said powerdriven means upon movement of said tape presenter to said remote position, and means for adjusting the amount of 10st motion between said tape presenter moving means and said tape presenter to vary the remote position to which said tape presenter is moved prior to operation of said knife.

9. In a taping machine, tape-applying mechanism, a movable tape presenter for directing tape to said tape-applying mechanism, a rod movable in a path parallel to the path of movement of said tape presenter, a pin carried by said rod, spaced stops carried by said tape presenter at opposite sides of said pin and arranged to be engaged by said pin to cause movement of said tape presenter upon movement of said rod, a cam surface on said rod, a tape-severing knife movable in a path transverse to said tape presenter, power-driven means for reciprocating said knife, and means operated by the cam surface on said rod for connecting said knife to said power-driven means upon movement of said tape presenter to a position remote from said tape-applying mechanism.

10. In a taping machine, tape-applying mechanism, a movable tape presenter for directing tape to said tape-applying mechanism, a rod movable in a path parallel to the path of movement of said tape presenter, a pin carried by said rod, spaced stops carried by said tape presenter at opposite sides of said pin and arranged to be engaged by said pin to cause movement of said tape presenter upon movement of said rod, a cam surface on said rod, a tape-severing knife movable in a path transverse to said tape presenter, power-driven means for reciprocating said knife, means operated by the cam surface on said rod for connecting said knife to said powerdriven means upon movement of said tape presenter to a position remote from said tape-ap plying mechanism, and means for adjusting the position of the rearmost stop on said tape presenter to vary the position of said tape presenter when said knife is connected to said powerdriven means.

11. In a taping machine, tape-applying mech anism, a tape presenter for directing tape to said tape-applying mechanism, a shear block mounted behind the forward portion of the tape presenter when in tape-presenting position, a knife at the opposite side of said tape presenter and arranged to be moved in shearing relation in said shear block, power-operated mechanism for operating said knife, means for moving said tape presenter away from said tape-applying mechanism, and means operated upon movement of said tape presenter away from said tape-applying mechanism for connecting said knife to said power-operated mechanism.

12. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a stationary shear block mounted behind the forward portion of the tape presenter when in tape-presenting position, a knife at the opposite side of said tape presenter and arranged to be moved in shearing relation in said shear block, power-operated mechanism for operating said knife, means for moving said tape presenter away from said tapeapplying mechanism, means operated upon move ment of said tape presenter away from said tapeapplying mechanism for connecting said knife to said power-operated mechanism, and means for adjusting the position to which the tape presenter moves prior to the connection of said knife to said power-operated mechanism.

13. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a stationary shear block mounted behind said tape presenter when in tape-presenting position, a knife at the opposite side of said tape presenter and arranged to move in shearing relation to said shear block, power-operated means for reciprocating said knife, means for moving said tape presenter, a lost motion connection between said last-named means and said tape presenter, and means operative after said tape presenter is moved away from said tape-applying mechanism for connecting said knife to said power-operated mecha nism.

14. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, a stationary shear block mounted behind said tape presenter when in tape-presenting position, a knife at the opposite side of said tape presenter and arranged to move in shearing relation to said shear block, power-operated means for reciprocating said knife, means for moving said tape presenter to and away from tape-presenting position, a lost motion connection between said last-named means and said tape presenter, means operative after said tape presenter is moved away from said tape-applying mechanism for connecting said knife to said power-operated mechanism, and means for adjusting the amount of lost motion between said tape presenter and said moving means.

15. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, an operating member for moving said tape presenter from a position adjacent to said tape-applying mechanism to a position remote therefrom, a lost motion connection between said operating member and said tape presenter, and means for adjusting the amount oflost motion in said connection.

16. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, said tape presenter being movable from a position adjacent to said tape-applying mechanism to a position remote therefrom, an operating member for moving said tape presenter, said operating member being movable in a path parallel to the path of movement of said tape presenter, a pair of spaced abutments carried by said tape presenter, and a pin rigid with said operating member, said pin projecting between said abutments and arranged to engage one or the other of said abutments upon movement of said operating member in one or the other direction.

17. In a taping machine, tape-applying mechanism, a tape presenter for directing tape to said tape-applying mechanism, said tape presenter being movable from a position adjacent to said tape-applying mechanism to a position remote therefrom, an operating member for moving said tape presenter, said operating member being movable in a path parallel to the path of movement of said tape presenter, a pair of spaced abutments carried by said tape presenter, a pin rigid with said operating member, said pin projecting between said abutments and arranged to engage one or the other of said abutments upon movement of said operating member in one or the other direction, a tape-severing knife, powerdriven means for operating said knife, and means operative after said tape presenter has been moved to a predetermined position away from said tape-applying mechanism for connecting said tape-severing knife to said power driven means.

18. In a taping machine, tape-applying mechanism, means for delivering tape to said tapeapplying mechanism, a folder positioned in front of said tape-applying mechanism past which the tape passes, said folder having a vertical wall against which the tape is pressed by the edge of a work piece and a pair of horizontally extending walls for imparting a transverse curvature to the tape, a presser foot arranged to engage the under surface of a work piece presented to said folder, said presser foot being mounted for heightwise adjustment adjacent to said folder, and a yieldable upper presser foot arranged to engage the work piece on the upper surface thereof opposite said lower presser foot.

19. In a taping machine, tape-applying mechanism, means for delivering tape to said tapeapplying mechanism, a folder positioned in front of said tape-applying mechanism past which the tape passes, said folder having a vertical wall against which the tape is pressed by the edge of a work piece and a pair of horizontally extending walls for imparting a transverse curvature to the tape, a presser foot mounted for heightwise adjustment adjacent to said folder, said presser foot having a work gripper mounted for vertical adjustment thereon, and an upper presser foot arranged to engage the work piece on the upper surface thereof opposite said lower presser foot.

20. In a taping machine, tape-applying mechanism, means for delivering tape to said tapeapplying mechanism, a folder positioned in front of said tape-applying mechanism past which the tape passes, said folder having a vertical Wall against which the tape is pressed by the edge of a work piece and a pair of horizontally extending walls for imparting a transverse curvature to the tape, a lower presser foot mounted adjacent to said folder, said lower presser foot having a work-engaging portion and another portion located below the work-engaging portion but projecting above the surface of the lower horizontal wall portion a sufficient amount to prevent any substantial pressure between the under surface of the work piece and the tape between said surface and the lower horizontal wall portion of said folder, and a yieldingly mounted upper presser foot arranged to engage the work at the upper surface thereof at a point opposite the point of engagement between the work and the lower presser foot.

21. In a taping machine, tape-applying mechanism, means for delivering tape to said tapeap-plying mechanism, a folder positioned in front of said tape-applying mechanism past which the tape passes, said folder having a vertical wall against which the tape is pressed by the edge of a work piece and a pair of horizontally extending walls for imparting a transverse curvature to the tape, a lower presser foot mounted adjacent to said folder, said lower presser foot having a work-engaging portion and another portion located below the work-engaging portion but projecting above the surface of the lower horizontal wall portion a sufficient amount to prevent any substantial pressure between the under surface of the work piece and the tape between said surface and the lower horizontal wall portion of said folder, at yieldingly mounted upper presser foot arranged to engage the work at the upper surface thereof at a point opposite the point of engagement between the work and the lower presser foot, and means for moving said upper presser foot away from' the lower presser foot to facilitate the insertion of a work piece therebetween.

22. In a taping machine, tape-applying mechanism, means for presenting tape to said tapeapplying mechanism, means for folding the tape about the edge of a work piece, said tape-presenting means having a pair of elongated vertically spaced guides from which the tape is delivered to the tape-applying mechanism, a second pair of guides for guiding the tape to said first-mentioned set of guides, and means mounting each of said guides for independent vertical adjustments.

23. In a taping machine, tape-applying mechanism, a slidable tape presenter from which tape is delivered to said tape-applying mechanism, said tape presenter comprising a tape guide and a heating block for heating the tape guide, a vertical plate for supporting said tape presenter for sliding movement, said tape guide and heating block being spaced from one another throughout a portion of their lengths and embracing said plate, said plate having a longitudinally extending slot throughout a portion of its length, and a heat conducting member located in said slot and connecting said tape guide and said heating block together at their spaced portions.

24. In a taping machine, tape-applying mechanism, a tape presenter for delivering tape to said tape-applying mechanism, said tape presenter comprising a tape guide and a heating block secured together in intimate contact with one another at their rear portions and separated from one another at their forward portions, a .vertical wall embraced by said forward portions and forming a support on which said tape presenter may slide, said vertical wall having a longitudinally extending slot, a heatconducting member slidable in said slot, and means securing the forward portions of said tape guide and said heating block to the opposite sides of said heat-conducting member.

25. In a taping machine, tape-applying mechanism, a tape presenter for delivering tape to said tape-applying mechanism, said tape presenter comprising a tape guide and a heating block secured together in intimate contact with one another at their rear portions and separated from one another at their forward portions, a vertical wall embraced by said forward portions and forming a support on which said tape presenter may slide, said vertical wall having a longitudinally extending slot, a heat-conducting member slidable in said slot, and means securing the forward portions of said tape guide and said heating block to the opposite sides of said heatconducting member, said heating block having a shouldered portion arranged to engage the rear end of said vertical wall to limit movement of said tape presenter in one direction relative to said wall.

26. In a taping machine, tape-applying mechanism, a tape presenter from which tape is delivered to said tape-applying mechanism, said tape presenter comprising a tape guide and a heating block for heating the tape guide, a vertical plate for slidably supporting said tape presenter, said tape guide and heating block being spaced from one another throughout a portion of their lengths and embracing said plate, said plate having a longitudinally extending slot throughout a portion of its length, a heat-conducting member located in said slot and connecting said tape guide and said heating block together at their spaced portions, and means for maintaining the tape being delivered to the tape-applying mechanism in contact with said slide during its movement thereover.

27. In a taping machine, means for folding tape about the edge of a work piece, a cooperating hammer and anvil for pressing the tape to the opposite sides of said work piece, means for oscillating said hammer toward and away from said anvil, and means for varying the stroke of said hammer heightwise and widthwise relative to said anvil.

28. In a taping machine, means for folding tape about the edge of a Work piece, a cooperating hammer and anvil for pressing the tape to the opposite sides of said work piece, a shaft pivotally supporting said hammer for movement toward and away from said anvil, a rotatably mounted bearing member supporting said shaft, the bearing surface of said bearing member being eccentrically disposed therein, and means for oscillating said hammer about the axis of said shaft.

29. In a taping machine, means for folding tape about the edge of a work piece, a cooperating hammer and anvil for pressing the tape to the opposite sides of said work piece, a shaft pivotally supporting said hammer for movement toward and away from said anvil, a rotatably mounted bearing member supporting said shaft, the bearing surface of said bearing member being eccentrically disposed therein, means for locking said bearing member in any one of a plurality of positions, and means for oscillating said hammer about the axis of said shaft.

30. In a machine of the character described, a cooperating hammer and anvil, an oscillatable arm supporting said hammer for movement toward and away from said anvil, means for pivotally supporting the hammer near the extreme forward portion thereof at the outer end of said arm, and a spring acting on the heel end of said hammer for urging the heel end of said hammer downwardly toward said anvil so that a piece of work on the anvil will be first engaged by the heel end of the hammer as the hammer is moved toward the anvil.

31. In a machine of the character described, a cooperating hammer and anvil, an oscillatable arm supporting said hammer for movement toward and away from said anvil, means for pivotally supporting the hammer near the extreme forward portion thereof at the outer end of said arm, a spring acting on the heel end of said hammer for urging the heel end of said hammer downwardly toward said anvil so that a piece of work on the anvil will be first engaged by the heel end of the hammer as the hammer is moved toward the anvil, and means for varying the axis of oscillation of said arm to vary the stroke of the hammer both heightwise and widthwise relative to the anvil.

ROUEL R. CAMPBELL.