US1835079A - Sole cementing machine - Google Patents

Description

Dec. 8, 1931. OPACITY 1,835,079 I SOLE CEMENTING MACHINE Filed Sept. 7, 1929 2 Sheets-Sheet 1 INVENTOR PAUL OPA any ATTORNEY Dec. 8, 1931. I QPACITY 1,835,079

SOLE CEMENTING MACHINE Filed Sept. 7, 1929 2 Sheets-Sheet 2 INVENTOR PA u/ OPAC/TY ATTORNEY Patented Dec. 8, 1931 UNITED STATES PATENT OFFICE PAUL OPACITY, OF NEWARK, NEW JER SEY, ASSIGNOR TO JOHN GITZ, JR., 0]? WEST ORANGE, NEW JERSEY SOLE CEMENTING MACHINE Application filed September 7, 1929. Serial No. 390,883.

repair work and is of such simple construction that while adapted for use in the larger shops it will also be within the reach of the man conducting a small repair business in his own shop.

Shoes, particularly those which have been worn to the extent of requiring new soles, diifer materially one from another in the matter of flatness of the bottom. Considering the shoe in the position it usually assumes on a repairing last with the bottom of the sole uppermost, many shoes hump up at the portion occupied by the ball of the foot, the toe portion drooping. Others have the toe portion raised and the ball low. The illustrated form of my improved machine is particularly designed for use in cementing half soles to shoes, and to carry out one principal object of my invention, namelythat of applying uniform pressure over the surface of the sole while the cement is setting, irrespective of this humping up or lowness of the ball and the drooping or raised toe. This object is attained by means of a floating plate on the top of the last and a floating pressure plate combined with means for pressing these together and firmly .yet elastically pressing the sole to theshoe and holding it in position. One of my purposes in designing this machine was to furnish the repair man a simple, inexpensive, and eflicient implement, well suited to his needs in cementing soles to shoes.

In the drawings onepractica-ble form of my invention is illustrated in which Figure 1 is a side elevation, partly in longitudinal section, of my improved machine shown as applying pressure to a half sole being cemented to the sole ofa shoe.

F ig. 2 is a side elevation of my improved last, illustrating the adjustability afforded by the floating sole.

Fig. 3 is a viewlooking down in the front of the body of the last.

Fig. 4 is a front view of the machine illustrated in Fig. 1. Y

Fig. 5 is a rear view of such machine, and

Fig.6 is a view looking down on the head of the jack or last supporting standard.

The body of the last is designated by the reference character 7, and is shown having a depending shank 8, terminating in the usual tapered plug 9, of non-circular cross section.

Before describing the details of construction of the last and the other portions of the machine, the jack or supporting standard which, while specially designed for use with my improved machine, is capable of supporting other lasts, will receive attention.

A member 10, which for want of a better name I shall term a cap, has. a flange 11 adapted to surround the upper end of an upright bar or tube 12, there being a shoulder 13 above the flange adapted to rest on the upper end to the tube 12. Three set screws 14 are shown carried by the flange for removably securing the cap to the tube. The upper part of the cap 10 is open and forms a circular cavity. A socket member 18 has a reduced stem portion 19 adapted to fit in the circular cavity in the upper part ofthe cap 10 and has a shoulder 20 for resting on the top of the cap. A boss. 17 is formed on the side of the cap for carrying a setscre w'lfl, such set screw having a conical end 15 adapted to extend into the circular cavity and engage the stern portion 19 when this is seated therein. 1

The walls 21, of the upper part of the member 18 are shown, see Fig. 6, as forming a tapering socket, preferably cruciform in cross section so that it may receive the plug 9 in such a manner as to support the last 7 in four different cardinal positions. The set screw 16, or its conical end 15, is cooperative with a number of indentations 22, preferably eight in number, to permit angular adjustment of the socket member 18 upon the cap 10. Index points 23'are shown for assisting the workman in bringing the indentations in register with the end 15 of the set screw.

For illustrating the method of using my improved machine a shoe 24 is shown in operative position on the last 7. The shoe has a sole 25 to which there is to be cemented in some suitable or well .known manner a sole portion 26. The toe portion of the upper or vamp 27 terminates at the opening 28. The front portion 29 of the body of the last 7 is shorter than the toe of the shoe and carries a forwardly extending interchangeable sole supporting plate 30, the length of the plate being sufficient to underlie the portion of the sole 25 of the shoe to which the sole layer 26 is to be cemented. This front portion 29 is formed on the upper side into side flanges 31, substantially flat on top. In each of the flanges there is shown formed two notches 32, for receiving feet 33, four in number in the illustration, dependent from the plate 30. The lower ends of these feet are preferably rounded and located to stand and rock on the upper edge of a lifter 34, pivoted to the last 7 at 35, the lifter conforming to the body of the last. Two of the feet 33, are located slightly forwardly of the ball engaging end 36 of the plate, and two are placed rearward 1y of the toe engaging end 37.

Differences in the flatness of the fore parts of shoes are accommodated by this faculty for rocking or tilting. Should the shoe be high at the ball the end 36 of the plate, under the application of pressure, rises as in the full line position in Fig. 2. On the other hand, should the toe be high and the ball low, the end 37 rises asin the dotted line position. When normal flatness prevails, the plate 30 assumes theposition shown in Fig. 1.

A forked lever 38, pivoted to the last at 39, is provided for raising the lifter 34. When the front end of the lever is free, its cam shaped rear end 40 is elevated and engages and raises the lifter holding it sufliciently elevated that the entire toe portions of the last may freely enter the toe of the shoe being operated upon. When the front end of the lever 38 is raised it engages the lifter well forwardly of its pivot 35 and forces the plate 30 up against the downward force exerted by the presser 41, presently to be described.

Presser 41 comprises a rigid case conforming to the general shape of the outer surface of a shoe sole. It is shown having a flange 42 extending along both sides, within which an elastic cushion 43 is to advantage disposed. Across the rear the flange is preferably absent, giving the cushion pad freedom to conform at this region to its work.

The presser is interchangeably mounted on a truss or frame work 44, having two side members 45, spaced apart and conforming on their under side to the upper surface of the presser 41'. A boss 46 formed on the upper side of the presser is adapted to enter the space between the side members 45, and, when the screw 47 and plate 48 are backed off sufficiently, permit longitudinal shifting and also a self-adjusting movement conforming to the tilting of the last plate 30.

At the rear the truss frame 44 curves downwardly toward the shank portion 49 of a shoe, and forwardly of the position to be occupied by the shoe heel 50. A lever 51 is shown straddling the shank 8 of the last, and pivoted to it at 52. The forward arm of the lever comprises two bars 53, lying on opposite sides of the lever 38, and their ends adapted to be engaged at the top and bottom respectively by studs 54 and 55 carried by the lever 38, so that movement of the outer end of one lever in either direction moves the outer end of the other lever in the reverse direction. The proportion of the arms of the lever 51, and the location of the studs 54 is such that when the outer end of lever 38 is raised the outer end 56 of lever 51 is lowered powerfully and to a smaller extent. The outer or rearward end 56 of the lever is notched at the lower side. Side arms 57 are formed at the rear end of the truss frame for carrying a bail 58.

Deep holes are formed in the arms 57 for receiving the inturned ends 59 of the wire forming the bail. The sides of the bail are sufficiently wide apart to clear the shoe and adjacent parts of the machine and at the lower portion converge forming at the end a narrow loop 60 for passing over the lever end 56 and engaging the notches formed in its lower side. At its front the truss frame 44 is narrowed to a single portion 61 to which is pivoted at 62 a lever having a long end 63 and a shorter transverse end 65. A bail 66 has the ends 67 of the wire from which it is formed inturned and enter holes formed in the lever where the parts 63 and are joined. The lower end of the bail is narrowed into a loop for passing over the end of the lever 38, the lower edge of this lever being notched, as at 68, for preventing the bail slipping in setting up the machine preparatory to applying pressure.

The operation of the form of my machine above described is as follows: Assuming the last and its associated parts to be in the Fig. 2 position with the outer end of lever 38 down, its cam rear end raised and holding the lifter 34 raised out of the way of the shoe 24 when this is being placed on the last. The lowering of the outer or front end of lever 38 raises the rear end of lever 51. A shoe, as 24, upon the sole 25 of which the sole 26 has been placed together with a suitable intermediate coating of cement, is put on the last. In some cases the sole 26 will be placed on the shoe after it is on the last, this being a matter of preference with the operator.

The shoe now being ready for the application of pressure, the operator holds the pressure device raised above the shoe, passes the lower end 60 of the bail 58 below the lever end 56, causing it to enter one or another of the notches, for adjusting its effective length, then with the tightening lever 63 raised passes the lower end of the bail 66 over the ward or forward on the truss frame 44 tobring it into proper registry with the sole 26.

The plate is now free to adjust itself to the position of the shoe sole, as is also the plate 41. The tightening lever 63 is then turned backward upon its pivot 62, raising the bail 66 and the engaged end of the lever 38. This raises the lifter which engages the feet 33 of plate 30 which at this time are rest- I ingon its upper surface. The raising of the lever 38 lowers the end 56 ofleveri 51, and draws down the rear end of. the truss frame 44. At the same time the upward movement of the lever 38 having been arrested by the engagement of the upper edges of the lifter with the lower faces of the flanges 31 formed on the last body the further movement of the lever 63 is converted into downward movement of the presser plate 41. The elasticity of the cushion 43 comes into play as the pressure increases. Preferably the lever 2 *63 snaps down and engages the truss frame,

the location of its pivot 62 and of the bail connection 67 being so located that there is sufiicient overthrow to hold the free end of the lever 63 down.

After a sufficient length of time has elapsed to permit the cement to set, the operator takes hold of the lever 63, and turns it on its pivot 62. This releases the pressure on the bails 66 and 58 and permits their removal from the levers 38 and 5 1. In some cases the bail 66 is first removed from lever 38, permitting the lowering of' this lever and the consequent raising of the end 56 of lever 51, thereby facilitating the release of the bail end 60 from it.

It is to be understood that I do not limit myself to the precise construction illustrated herein since various changes may be made in practice, within the scope of the claims, without departing from the spirit of my invention.

Having thus described my invention, I claim and desire to secure by Letters Patent: 1. In a shoe sole cementing machine, the combination with a last, the sole of its toe and ball portions being formed as a plate, and a lifter for the plate, the interengagement "between the plate and its lifter being such that the plate can tip up at the toe or tip up at the ball, of a presser cooperative with the last, and means for concurrently actuating the presser and the lifter.

52. In a shoe sole cementing machine, the combination with a last, the sole of its toe and ball portions being formed as a plate, and a lifter for the plate, there being front and back feet dependent from the plate and adapted to be engaged by the lifter, the interengagement between the feet and the lifter being such that the plate can tip up at the toe or tip up at the ball, of a presser cooperative with the last, and means for concurrently actuating the pressure and the lifter.

3. In a shoe sole cementing machine, the

combination with a last body having side flanges at the front portion, a separate plate forming the sole at the toe and ball portions, each of these flanges being formed with a notch at the front and at the rear and there being feet dependent from the plate at its front and rear and adapted tovmove up and down through the notches, of a lifting member mounted for guidance on the last body and having portions movable up and down below the flanges in position to engage the feet and raise and lower the plate within a range of movement determined by the position of the lower and upper faces of the flanges, the plate being adapted to tip up at the toe raising its front feet off the lifter, and to tip up at the ball raising its rear feet off the lifter, and means for actuating the lifter. 4. In a shoe sole cementing machine, the combination with a last body having side flanges at the front portion, a separate plate forming the sole at the toe and ball portions, each of these flanges being formed with a notch at the front and at the rear and there being feet dependent from the plate at its front and rear and adapted to move up and down through the notches, of a lifting member mounted for guidance on the last body and having portions movable up and down below the flanges in position to engage the feet and raise and lower the plate within a range of movement determined by the position of the lower and upper faces of the flanges, the plate being adapted to tip up at the toe raising its front feet off the lifter, and to tip up at the ball raising its rear feet off the lifter, and means for actuating the lifter, comprising a lever fulcrumed on the last body and located in position when moved in either direction to engage and raise the lifter.

5. In a shoe sole cementing machine, the combination with a last body having side flanges at the front portion, a separate plate forming the sole at the toe and ball portions, each of these flanges being formed With a notch at the front and at the rear and there being feet dependent from the plate'at its front and rear and adapted to move up and down through the notches, of a lifting member mounted for guidance on the last body and having portions movable up and down below the flanges in position to engage the feet and raise and lower the plate within a range of movement determined by the posilast body near one end and located in position when moved up at its shorter end to partly raise the lifter and when moved up at its longer end to raise the lifter against the lower faces of the flanges, a second lever fulcrumed on the last body having a shorter end directed backwardly and a longer end directed forwardly and disposed at the side of the longer arm of the first mentioned lever, there being means for interconnecting the levers, a pressure device constructed and adapted for overlying the last, bails carried by the pressure device for engaging the longer arm of the first lever and the rearward arm of the second lever, and means for drawing up on one of the bails.

6. In a shoe sole cementing machine, the combination with a last body having side flanges at the front portion, a separate plate forming the sole at the toe and ball portions, each of these flanges being formed with a notch at the front and at the rear and there being feet dependent from the plate at its front and rear and adapted to move up and down through the notches, of a lifting member mounted for guidance on the last body and having portions movable up and down below the flanges in position to engage the feet and raise and lower the plate within a range of movement determined by the position of the lower and upper faces of the flanges, the plate being adapted to tip up at the toe raising its front feet off the lifter,- and to tip up at the ball raising its rear feet off the lifter, and means for actuating the lifter, comprising a lever fulcrumed on the last body near one end and located in position when moved up at its shorter end to partly raise the lifter and when moved up at its longer end to raise the lifter against the lower faces of the flanges, a second lever fulcrumed on the last body having a shorter end directed backwardly and a longer end directed forwardly and disposed at the side of the longer arm of the first'mentioned lever, there being means for interconnecting the levers, a pressure device comprising a truss frame having two spaced apart members upwardly curved at the center portion, a plate formed on its under side for engaging the sole of a shoe when placed in the last, the upl per side conforming to the curve of the spaced apart members and carrying a boss located in the space between them, means for loosely holding the boss between the members, a bail carried by the rear of the truss on the last body having a shorter end directed backwardly and a longer end directed for- Wardly and disposed at the side of the longer arm of the first mentioned lever, there being means for interconnecting the levers, a pressure a device constructed and adapted for overlying the last, bails carried by the pres sure device for engaging the longer arm of the first lever and the rearward arm of the second lever, and means for drawing up on one of the bails.

In witness whereof, I hereby aflix my signature this 5th day of Sept., 1929.

PAUL OPACITY.

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