US2679656A - Machine for pressing a wrapper against the edge of a shoe sole - Google Patents

Description

June 1, 1954 E, HAAS 2,679,656

MACHINE FOR PRESSING A WRAPPER AGAINST THE EDGE OF A SHOE SOLE Filed March 15, 1952 3 Sheets-Sheet l m /II [111 /z I ri- INVENTOR. 506 49 A/AAS 1 76- {9" 4! and a- J 54 E. HAAS 2,679,656

MACHINE FOR PRESSING A WRAPPER AGAINST THE EDGE OF A SHOE SOLE 3 Sheets-Sheet 2 Filed March 15, 1952 I WM mi mm A if j 6 5 72 70 7a I 7 j 6' is 1 I I 1 A; A /2 )aa INVENTOR. 26742 fi AA 5 E. HAAS MACHINE FOR PRESSING A WRAPPER AGAINST June 1, 1954 THE EDGE OF A SHOE SOLE 3 Sheets-Sheet 5 Filed March 15, 1952 5 5 MA v, 4 W W A 7 w 7 f Patented June 1, 1954 MACHINE FOR PRESSING A WRAPPER AGAINST THE EDGE OF A SHOE SOLE Edgar Haas, New York, N. Y., assignor to Herman Schwabe, Inc., New York, N. Y., a corporation of New York Application March 15, 1952, Serial No. 276,850

18 Claims. 1

This invention relates to machines for cementing shoes, and more particularly to a machine for cementing a wrapper around the periphery of the sole of a shoe.

A type of shoe is already known in which a socalled wrapper is stitched around the periphery of an upper and later is folded downwardly and cemented around the periphery of a sole. The wrapper has been made of crepe rubber and adhered to a rubber sole. More recently a wrapper has been made of a synthetic rubber having much the appearance of crepe rubber.

The primary object of the present invention is to generally improve the manufacture of shoes having a wrapper cemented around the periphery of a sole. A more particular object is to provide a machine to help press or squeeze the wrapper closely against the periphery of the sole, thereby insuring a better bond therebetween. Further objects of the invention are to so design the machine as to'adapt it for shoes of different size by appropriate adjustment of the parts of the machine, and also to make the pressure adjustable.

To accomplish the foregoing general objects, and other more specific objects which will hereinafter appear, my invention resides in the machine elements and their relation one to another as are hereinafter more particularly described in the following specification. The specification is accompanied by drawings, in which:

Fig. l is a perspective view of a machine embodying features of my invention;

Fig. 2 is a section through a shoe mounted on a last preparatory to passage through the machine;

Fig. 3 is a plan View;

Fig. 4 is a section taken in the plane of the line i l of Fig. 1, but drawn to enlarged scale;

Fig. 5 is a section taken on the line 55 of Fig. 4;

Fig. 6 is a section taken on the line 66 of Fig. l;

Fig. 7 is a section through the shoe at the rollers and is explanatory of the operation of the machine;

Fig. 8 is a section taken in the plane of the line 8-4? of Fig. 1, but drawn to enlarged scale;

Fig. 9 is a fragmentary plan view showing a modified form of roller mounting;

Fig. 10 is a front elevation of the modified roller mounting of Fig. 9, looking in the direction of the arrows Ill-I9; and

Fig. 11 is a fragmentary side elevation, looking in the direction of the arrows I I--I I.

5 here the parts together.

Referring to the drawing, and more particularly to Fig. 2, the shoe comprises an upper I2 which is sewed at its lower edge to an insole I4. The same stitching, or more usually another line of stitching, is employing to stitch a Wrapper IE to the upper I2. Ordinarily one line of stitching will go through two of the parts, while the second line of stitching will go through all three. The wrapper I6 at this time is inthe form of a band or strip lying above the stitching, as shown at I6, but it may then be turned down, as shown in solid lines at It, so that it will lie around the periphery of the outsole IS. A filler, for example, cork is disposed between the insole i4 and the outsole I8, as shown at 2!). The soles and filler are preliminarily secured together, as by cementing or in any other suitable fashion.

The manufacturing step here involved is the cementing of the wrapper If: to the periphery of the sole I8. For this purpose the wrapper is coated with cement while in the raised position I6. The periphery of the sole is coated with cement, and the wrapper is then turned down about the sole and is pressed thereagainst to ad- Any excess Width of Wrapper is trimed flush with the bottom of the sole. During this and the following operations the shoe is preferably filled by a conventional last 22.

To facilitate the cementing operation I have devised a machine which is shown in perspective in Fig. 1. In practice the parts of the machine may be housed, and the legs of the machine beneath the table may be enclosed in a housing, but these have been omitted in the drawing to more clearly show the essential parts of the machine.

Referring to Figs. 1 and 3, the machine comprises a table 24 and a shoe pusher 26 which is movable over the table under drive of suitable power means, here shown at 28. In the present case the power means includes a pneumatic cylinder and piston, operating on a piston rod the outer end of which carries the pusher 26. The operation of the piston is preferably controlled by a foot-operated valve indicated at 30 and including a foot treadle 32. Compressed air from a suitable source is supplied through pipe 34.

The machine further comprises opposed pressure rollers 36 and 38. These are rotatable on vertical axes and are disposed on opposite sides of the path to the pusher 25. The rollers are provided with suitable means to yieldably urge them toward one another. In the present case com- 3 pression springs 40 and 42 are employed for this purpose.

The machine further preferably includes a lift guide 44. This is disposed on the axis of movement of the pusher, but on the side of the rollers remote from the pusher. The lift guide may be a wedge-shaped member, and in any event has an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers. The operation of the lift guide is best shown in Fig. 8, in which it will be seen that the heel end of the shoe has been raised by the lift guide 44 in order to keep the toe end of the shoe flat on the table in position to be effectively operated on by the pressure rollers. However, it may be mentioned that it is not essential to pass the shoe through the machine heel first. It may be run through toe first, for the general condition to be met is that the shoe is downwardly convex on its longitudinal axis, and it is therefore desirable to raise the leading end of the shoe as the trailing end reaches the rollers.

In Fig. 8 it will be seen that the position of the lift guide 24 may be adjusted toward or away from the pusher. More specifically, it has a depending part 45 received in a guide slot 48, thus holding the wedge 44 against sideward movement. The part 48 is internally threaded and receives an adjusting screw 50 having an operating knob 52 at one end and held against axial movement by a collar 54 at the other end. It will be recognized that by rotating the knob 52 the wedge 44 will be moved toward or away from the rollers and thus may be set in a position best adapted for any particular size and shape of shoe. The adjustment may be locked by a set screw 53.

Reverting to Figs. 1 and 3, the position of the pusher 26 may also be adjusted longitudinally of the table 24, and for this purpose the pneumatic cylinder 28 is preferably mounted in position by bolts 69 passing through appropriate slots 62 in the table 24. By loosening the bolts the cylinder may be slid longitudinally of the table to take care of variation in shoe length. It may be set to accommodate the longest shoe, and many operators may prefer to use the machine in that way, but others may prefer to move up the retracted position of the pusher in the case of small shoes.

The path of movement of the rollers may be transverse of the axis of movement of the shoe, but I have found it preferable to fix the path of movement in an angular relation which is convergent from the pusher and divergent toward the lift guide. This is clearly shown in Figs. 1 and 3.

The particular structure here employed for mounting the pressure rollers may be explained with reference to Figs. 4, and 6 of the drawing. The roller 36 is preferably carried by a roller mount 64 by means of a bearing stud 66 fixedly secured to the mount 64 by a nut 68. It is desired to keep the lower face of the roller flush with the top of the table, and the stud is therefore secured to the mount at its upper end only. The mount includes a depending part slidably received in a guide slot 12. The mount overlies the surface of the table 24, as shown at '24 in Fig. 6, and is held against upward movement by means of a bottom plate 16 secured to the mount by screws 18.

The roller is pressed against the shoe by means of a compression spring 40, the forward end of which is located by a pin 80 forming a part of the mount 64, and-the rear end of which is received in a stationary block 82. This is fixedly bolted to the table by means of screws 84 and a plate 86, as shown also in Fig. 5. The screws pass through a guide slot 88, but this is intended to provide for adjustment of the spring pressure, and when the spring pressure has been set at a desired amount the screws 84 are tightened, and thus the block 82 remains stationary during operation of the machine. For a finer and more readily made adjustment of the spring pressure the block 82 may be provided with an adjusting screw 9!) turned by a knob 92 (Fig. 4) and locked, if desired, by locknut 94. The screw so bears against a plug 96 slidable within block 82 and bearing against the rear end of the compression spring 40.

It will be understood that the mechanism for mounting and for moving the opposed pressure roller 38 is the same as that described for the roller 36. It will also be understood that the range of movement afiorded for the rollers is preferably such that they may approach one another to small spacing, and yet spread apart widely enough to accommodate the widest shoe normally encountered in standard sizes. This refers, of course, to the effective length of the guide slot 12 for the roller mount 64, and is independent of the length of the adjusting slot 88.

Referring to Figs. 4 and 6 it will be noted that the rollers are enlarged or flanged somewhat at the bottom face, as indicated at I00. The reason for this will be clear from inspection of Fig. 7, in which it will be seen that the parts iflil help insure extra tight pressure at the bottom edge of the wrapper it.

In operation the wrapper and the edge of the sole are coated with a suitable rubber cement, while the shoe is on a last; the wrapper is turned downwardly by hand about the sole and pressed enough by hand to stick in position, the excess width of wrapper is trimmed flush with the sole; the shoe is then placed on the table and held down firmly by two hands, whereupon the valve is operated by one foot, thus causing the pusher to force the shoe between the rollers, and so smoothly applying additional high pressure to the wrapper. As the shoe moves between the rollers the leading end rides up on the lift guide, thus holding the trailing end flat on the table. If desired the shoe may be passed between the rollers twice, thus applying additional and prolonged pressure between the wrapper and the edge of the sole.

It may be explained that the angular disposition of the paths of movement of the rollers, most clearly shown in Figs. 1 and 3, is not essential but is preferred because it facilitates the initial sideward or spreading movement of the rollers when the leading end of the shoe first hits the rollers. This is so because with the angular disposition shown there is a component of force in the direction of movement of the rollers along the guide slots of the blocks 64.

Figs. 9, 10 and 11 illustrate a modification of the invention in which double rollers are employed, instead of the single rollers 36 and 38 shown in Fig. 3. In this way the shoe is subjected to two successive rolling actions during a single passage through the machine. The roller mount 64 corresponds to the mount 64 previously described, and is similarly mounted on and guided by the table. However, the pin 66' and nut 63' receive an equalizer bar I00, which carries two rollers 12 and H14. Each of these rollers may be like the rollers 36 and 38 previously de-' scribed, and is similarly freely rotatably mounted on shouldered pins H36 held by nuts Hit. It will be understood that the rollers I02 and lu l bear simultaneously against the side of the shoe with a balanced or self-equalized pressure. However, at the tips of the toe and heel ends of the shoe only one roller or the other of the pair at each side will be eifective, and in order to permit the single rollers to apply adequate pressure to the shoe, the permissible oscillation of the equalizer bar 166 is preferably limited. In the present case this is done by providing only a desired amount of clearance between the back edge ill] of the equalizer bar and the corners IE2 and H4 of the forward face of the base or block-like portion l 16 of the roller mount 54. It will be understood that the pins E E6 and 56', like the pin 65 of Fig. l, may be and preferably are made without a head at the lower end, for this not only facilitates assembly or disassembly, but encourages the rollers to rest in lowermost position on the table, for best engagement with. the shoe which is itself held down firmly on the table by the operator.

It will be understood that the construction shown in Fig. 9 is duplicated on the opposite side of the machine so that there are two equalizer bars and four rollers in all. There are two rollers and an equalizer bar on each side of the path of the shoe pusher 26 shown in Figs. 1 and 3. The force for yieldably urging the rollers toward one another is applied to the equalizer bar between the rollers, and preferably at the center of the equalizer bar or midway between the two rollers of each pair.

It is believed that the method of constructing and using my improved apparatus, as well as the advantages thereof, will be apparent from the foregoing detailed description. It will also be apparent that while I have shown and described my invention in several preferred forms, changes may be made in the structures shown, without departing from the scope of the invention as sought to be defined in the following claims.

I claim:

1. A machine for pressing a wrapper around the side edge of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, and power means for moving the pusher, said means including a pneumatic cylinder and piston and a footoperated valve for controlling the operation of the pusher.

2. A machine for pressing a wrapper around the side edge of a shoe sole, said machine cornprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on Vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, and power means for moving the pusher, a lift guide disposed on the axis of movement of the pusher but on the side of the rollers remote from the pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers.

3. A machine for pressing a wrapper around the side edge of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, and power means for moving the pusher, guide means for fixing the path of movement of the pressure rollers, said'means being disposed in an angular relation which is convergent toward the pusher.

4. A machine for pressing a wrapper around the side edge of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers ro tatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yield-- ably urging said rollers toward one another, and power means for moving the pusher, a lift guide disposed on the axis of movement of the pusher but on the side of the rollers remote from the.

pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers, guide means for fixing the path of movement of the pressure rollers, said means being disposed in an angular relation which is convergent toward the pusher and divergent toward the lift guide.

5. A machine for pressing a wrapper around the side edge of a shoe sole, said machine comprising a table, a shoe pusher movabl over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another,

power means for moving the pusher, said means including a pneumatic cylinder and piston and a foot-operated valve for controlling the operation of the pusher, and a lift guide disposed on the axis of movement of the pusher but on the side of the rollers remote from the pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers.

6. A machine for pressing a wrapper around the side edge of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, power means for moving the pusher, said means including a pneumatic cylinder and piston and a foot-operated valve for controlling the operation of the pusher, and guide means for fixing the path of movement of the pressure rollers, said means being disposed in an angular relation which is convergent toward the pusher.

7. A machine for pressing a wrapper around the side edge of a shoe sole, said machine comprising a table, a. shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, power means for moving the pusher, said means including a pneumatic cylinder and piston and a foot-operated valve for controlling the operation of the pusher, a lift guide disposed on the axis of movement of the pusher but on the side of the rollers remote from the pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers, and guide means for fixing the path of movement of the pressure rollers, said means being disposed in an angular rela tion which is convergent toward the pusher and divergent toward the lift guide.

8. A machine for pressing a wrapper around the side edges of a shoe sole, said machine comprising a. table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, power means for moving the pusher, a lift guide disposed on the axis of movement of the pusher but on the side of the rollers remote from the pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers, and means to fixedly adjust the lift guide toward oraway from the pusher.

9. A machine for pressing a wrapper around the side edges of a shoe sole, said machine comprising a. table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, power means for moving the pusher, and means to adjust the pressure exerted by the pressure rollers.

10. A machine for pressing a wrapper around the side edges of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, power means for moving the pusher, a lift guide disposed on the axis of movement of the pusher but on the side of the rollers remote from the pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers, and

means to adjust the pressure exerted by the pressure rollers.

11. A machine for pressing a wrapper around the side edges of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, power means for moving the pusher, said means including a pneumatic cylinder and piston and a foot-operated valve for controlling the operation of the pusher, and means to fixedly adjust the pusher and its pneumatic cylinder toward and away from the rollers.

12. A machine for pressing a wrapper around the side edges of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably ur ing said rollers toward one another, power means for moving the pusher, said means including a pneumatic cylinder and piston and a foot-operated valve for controlling th operation of the pusher, a lift guide disposed on the axis of movement of the pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers, and means to fixedly adjust the pusher and its pneumatic cylinder toward and away from the rollers.

13. A machine for pressing a wrapper around the side edges of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, opposed pressure rollers rotatable on vertical axes and disposed on opposite sides of the path of the pusher, means for yieldably urging said rollers toward one another, power means for moving the pusher, said means til including a pneumatic cylinder and piston and a foot-operated valve for controlling the operation of the pusher, a lift guide disposed on the axis of movement of the pusher but on the side of the rollers remote from the pusher, said lift guide having an inclined surface for lifting one end of a shoe as the other end passes between the pressure rollers, guide means for defining the path of movement of the pressure rollers, said means being disposed in an angular relation which is convergent toward the pusher and divergent toward the lift guide, means to fixedly adjust the lift guide toward or away from the pusher, means to fixedly adjust the pusher and. its pneumatic cylinder toward and away from the lift guide, and means to adjust the pressure exerted by the pressure rollers.

14. A machine for pressing a wrapper around the side edg of a shoe sole, said machine comprising a table, a shoe pusher movable over a part of said table, two pressure rollers and an equalizer bar disposed on each side of the path of the pusher, said rollers being freely rotatably mounted with their axes vertical at the ends of said equalizer bars, means for yieldably urging said equalizer bars toward one another, the force of said means being applied to the equalizer bars between the rollers, and power means for moving the pusher.

15. A machine as defined in claim 2, in which there are two pressure rollers and an equalizer bar disposed on each side of the path of the pusher, said rollers being freely rotatably mounted at the ends of said equalizer bar, and in which the force of th means for yieldably urging the rollers toward one another is applied to the equalizer bar between the rollers.

16. A machine as defined in claim 3, in which there are two pressure rollers and an equalizer bar disposed on each side of the path of the pusher, said rollers being freely rotatably mounted at the ends of said equalizer bar, and in which the force of the means for yieldably urging the rollers toward one another is applied to the equalizer bar between the rollers.

17. A machine for pressing a wrapper around the side edge of a shoe sole, said machine comprising a table, a sho pusher movable over a part of said table, two pressure rollers and an equalizer bar disposed on each side of the path of the pusher, said rollers being freely rotatably mounted with their axes vertical at the ends of said equalizer bars, means for yieldably urging said equalizer bars toward one another, the force of said means being applied to the equalizer bars midway between the rollers carried thereby, means to limit the permitted angular motion of the equalizer bar, and power means for moving the pusher.

18. A machine as defined in claim 4, in which there are two pressure rollers and an equalizer bar disposed on each side of the path of the pusher, said rollers being freely rotatably mounted at the ends of said equalizer .bar, and in which the force of the means for yieldably urging the rollers toward one another is applied to the center of the equalizer bar, and additional means to limit the permitted angular motion of the equalizer bar.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,891,264 Kinney Dec. 20, 1932 1,895,921 Ellis Jan. 31, 1933

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