US2255854A - Shoe-bottom-cementing machine - Google Patents

Description

Sept. 16, 1941. w. L. M KENZlE SHOE-BOTTOM -CEMENTING MACHINE Filed May 25, 1940 2 Sheets-Sheet 1 P 1941- w. L. M KENZIE 2,255,854

SHOE- BOTTOM-CEMENTING MACHINE Filed may 25, 1940 2 Sheets-Sheet 2 Patented Sept. 16, 1941 SHOE-BOTTOM-CEMENTING MACHINE Wilbur L. MacKenzie, Beverly, Mass., assignor to United Shoe Machinery Corporation, Borough of Flemington, N. J., a corporation of New Jersey Application May 23, 1940, Serial No. 336,753

12 Claims.

This invention relates to improvements in shoe-bottom-cementing machines and is particularly concerned with an improved machine for coating the overlasted margin of the upper on the bottom of a shoe, of the type illustrated in Letters Patent of the United States No. 2,100,341, granted November 30, 1937, upon an application of W. L. MacKenzie.

In the manufacture of shoes in which the outsole is to be attached by means of cement, it is customary to apply a stripe of cement upon the overlasted margin of the upper, as well as upon the margin of the outsole. The cement applied to a shoe bottom must be positioned with the outer edge of the band directly above the periphery of the insole, sometimes called the feather line. To efiect this result, the operator must guide the shoe with respect to the applying member, usually a nozzle, so as to maintain this relation in spite of the varying distance between the band of cement and the side of the shoe, which latter is held in engagement with a feed roll capable of yielding laterally and driven to assist the operator in presenting the entire length of the peripheral margin to be ccmented to the applying nozzle. Machines of the type illustrated in the above-mentioned letters patent have been operated successfully and are in extensive use. It will be understood, however, that a substantial amount of skill is required properly to present the shoe to the machine, partly because of the substantial mass of the mechanism for yieldably supporting the feed roll. Accordingly, an important object of the invention is to provide an improved machine in which the positioning of the band of cement on the work can more readily be accomplished. To this end, the improved machine, as herein illustrated and in accordance with features of the invention, is provided with a feed roll engaging the side of the shoe and which is held with its axis relatively fixed in the machine. The machine also has a nozzle inclined downwardly toward the overlasted margin of the upper and forwardly with respect to the direction of movement of the shoe and this nozzle is swingably mounted about an ofiset upright axis so that the Work-engaging end of the nozzle may be easily moved in and out with respect to the feed roll, thereby taking care of the changing space relation which exists, for example, between the band of cement and the side of the shoe at the toe end of the shoe and at the shank portion thereof. Another feature of the invention resides in an improved operator-controlled [8 which is fastened to a frame 20.

mechanism for swinging the nozzle. This mechanism, as illustrated, is combined with the treadle-controlled valve by means of which the iiow of cement to the nozzle is shut off when desired.

The difficulty of positioning the stripe of cement upon the overlasted margin is considerably increased when the shoe design is such that there are thicker portions, such as superposed straps, toe caps, or the like, upon the outside of the upper. To still further facilitate the control of the swinging movement of the nozzle and in accordance with another feature of the invention, a guide finger has been provided which is constructed and arranged to cooperate with a characteristic feature of the shoe which is independent'of its peripheral contour. This may be a specially provided channel in the insole which is substantially parallel to the periphery thereof.

These and other features of the invention will best be understood from a consideration of the following description taken in connection with the accompanying drawings, in which Fig. 1 is a side elevation of the upper part of the machine with the cover removed and showing a portion of a shoe in position for treatment;

Fig. 2 is an angular View upon a larger scale of the swinging mounting of the nozzle and showing the guide finger which may be associated with the nozzle;

Figs. 3 and 4 are sections taken transversely through the forepart and the shank portions respectively of a shoe and showing the relation of the nozzle and the feed Wheel to the work at these positions; and

Fig. 5 is a view similar to Fig. 1 but without any shoe, and with the parts in idle position.

As in the patented machine, a feed roll l0 engages the side of an inverted shoe S and a nozzle [2 cooperates with the overlasted margin M on the bottom of the shoe. In my improved machine the feed roll I 0, which is positively rotated by a shaft i6 connected to the feed roll through bevel gears, is journaled in a block The feed roll, therefore, serves as a guide or abutment against which the side of the shoe may be pressed as successive portions of the overlasted margin are presented to the nozzle. The nozzle, which is of the type shown in Letters Patent of the United States No, 2,177,666, granted October 31, 1939, upon my application, comprises a plurality of delivery members 22 (Fig. 2), each of which is pivotally mounted on a pin 23 in a block 24,

'1 V and they extend downwardly and forwardly with respect tothe direction of movement of the shoe,

'as indicated by an arrow inFig. 2. These delivery members are provided at their work-contacting lower ends with outlet openings which are supplied with cement through individual tubes 28 connecting with a passage (not shown) in the block 24. ifhe delivery members 22 are held in firm'engagement with the work by indi vidual springs 28, and protective covers 30 and 32 are provided to prevent damage to the ma-- chine by accidental contact with the springs and tubes. 7

For good shoemaking, as is well understood in the trade, it is essential that the stripe of cement which is applied to the overlasted margin" I4 shall extend as far out as possible without being exposed to view in the completedshoe and hence to the feather line of the insole. ,As is in:-; dicated in Figs. 3 and 4, the relation between this outer limit and the feedroll differs radically between the forepart and the shank portions of the s hoe. Accordingly, the nozzle block 24 is pivotal- 1 y mounted for swinging movement about an upright axis in a bracket 35 (Fig. 2) which is, as in the patented machine, clamped to a rod 36 held by a set screw 38 (Fig. 1) in an arm 4B; This arm; having a, depending inner end, is upwardly tiltable for a short distance about a pivot l 42 against the tension of a spring Mi as the operator presents the Work to the nozzle. Cement is supplied to thenczzle, under a pressure indicated bya gage 46, through a flexible metallic hose 48by means or" a pump (not shown) andis delivered Lfrom this hose to the nozzle through a T -co nncction 5i) and a hollow nozzle stem 5?. which is rigidly connected to the nozzle block 25. The upper and lower portions of this stem form pivot members to enable the swinging movement of the'nozzle andhavebearings' in'the bracket 35, Where they are held by removable bearing caps 56. The bracket 3a is cut away to provide space for angular movem'ent of anenlarged portion 88' of the stem 52in which a rotatable Valve member 62:18 fitted. This valve 62 may be turned by a redid connected to it by a universal joint 68, one

portion of which is formed in the end of the rod-and is notched to engage a pin 'II in the valve. The other end of the .rod'fifi is connected by another universal joint 89 to a rod extension 55 journaled in a bracket attached to the frame 20. A compression spring 16 is employed to hold the outer notched end Inf the rod 64 in engagement with the pin 1! in the valve member 62 The opening and closing of the valve 60 is ef- *to'a two-arm lever 82 pivoted to theframe at 64 and having a fork engaging a pin 83 on a block "56 :between said arms and which is slidable on the rod .12. Downward movement of the treadle rod I2 is transmitted to the blockthrough a compression spring 90. In Fig. 1, these part'sfiare shown'in the open position of the valve and, when 'the"treadle is released, they are 'returne'dto a position in which the valve is closed (Fig. 5) by inea ns ef a'spring 92, this latter'pos'ition being determined by the engagement of the arm I8 with the lower end of a stop screw 94. The spring 92 extends between the frame and one arm of the lever 82 and is not as strong as the spring 90. The latter, when fully expanded, is not as long as the distance between the head I3, as raised by the treadle spring, and the block 86, as raised by the spring 92.

The same treadle rod 72 is also used to swing the nozzle block 24 about its upright axis, thus causing the trailing end of the nozzle to'be moved from side to side, as indicated in Figs. 3 and 4..

To this end, the treadle rod and its bell crank 14 are connected to an actuating rod lei), which has a ballaand-socket joint I02 connecting it to an arm It l extending forwardly, with respect to of the rod IIHl for swinging the nozzle is not suf-, fi'cient to cause the valveto be closed when in operation upon the shoe bottom. Little effort is required to swing the trailing end of the'nozzle which is mounted to follow the desired path, much as a caster wheel follows the article to which it is attached. Because of this fact there is no tendency to push the .work away from the roll It by reason of the friction between the nozzle and the work, as would often happen were the. nozzle slidably rather than swingably mounted. In the down position of the treadle rod a tail 93 on the lever 82 engages a stop 95 fixed upon the frame and here shown as being a part of the block I8. After the lever 82 has reached a postion in which the valve is fully opened so that the tail 93 contacts the stop 95, th'en'further slight downward movement of the treadle rod, which will compress the spring still more, may be had, if necessary, to draw the r'o'd I00 to the right until the left collar I Iii engages the stop II2. If, on the other hand, it is 'desi'redTto move the nozzle I2 away from the feed wheel I6, then the spring 9d will expand and, overcoming the spring 92, keep the valve closed while permitting the operator to swing the noz zle. It "will be understood that when the treadle is released and the rod is moved upwardly till the arm 18 contacts the stop 94, the head 73 will leave the spring 98, the nozzle will be pushed away from the feed wheel, and the valve will be closed. V I

k In case the shoe is of the type in which the up- {per is formed of, or is provided with, straps' I20,

the caps I22 or other portions which form bumps 'jupon the bottom ofthe shoe and on the side thereof as well, then it may be founddesirable -toprdvidethe insole I with a special channel '0 which shall be substantially parallel to the pe- 'riphery of the insole and into which 'may be inserted theend of-a rigid guide finger I24 fastened to the side of the nozzleblock 24.. With an arrangement of this sort, the relation of the nozzle to the "feather line of the overlasted upper may be'n'iore' positively determined and the finger I24 may be held in the channel by the action of one ofithe'springs I08 which will be energized when the treadle rod 12 is depressed, as shown in Fig. 1-.

H In the'useof-themachinaan inverted shoewill be presented to the nozzle, raising the ends of the delivery fingers 22 somewhat to insure firm contact with the overlasted margin M of the upper, and the side of the shoe will be brought into engagement with the guide or abutment provided by the feed roll Ill. The operator will then, starting at a point near the heel breast line at one side of the shoe bottom, cause the nozzle to traverse the margin of the shoe bottom to apply a uniform stripe of cement the position of which will be determined by swinging the work-contact ing end of the nozzle from side to side under the control of the operator as he cause the treadle to compress one or the other of the springs N38. The mass of the movable nozzle is small, and the position of its trailing end may be readily controlled. At the beginning of the operation, the valve 65 will be opened as the treadle rod is depressed, and at its completion it will be closed again by upward movement thereof under the impulse provided by the return spring 92, and the treadle rod raised by a usual treadle spring.

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 machine for applying cement to the overlasted upper upon the bottom of a shoe, a guide against which the side of an inverted shoe may be pressed as it is presented to the machine, a depending nozzle for applying cement to said overlasted margin of the upper, said nozzle being inclined downwardly and forwardly with respect to the direction of movement of the shoe, and means for supporting said nozzle for pivotal movement about an upright axis offset to the rear of the work-engaging end of the nozzle.

2. In a machine for applying cement to the overlasted upper upon the bottom of a shoe, a feed roll positioned to engage the side of an inverted shoe, a nozzle inclined downwardly and forwardly with respect to the direction of movement of the shoe and arranged to apply cement to said upper, an upright pivotal support for said nozzle, and operator controlled means for swinging said nozzle around said support.

3. In a machine for applying cement to the margin of the overlasted upper upon the bottom of a shoe, a roll engaging the side of an inverted shoe, a depending nozzle for coating said margin and pivotally mounted for lateral movement to vary the horizontal relation between the workcontacting end of the nozzle and said roll, and operator-controlled means for swinging said nozzle.

4. In a shoe-bottom-cementing machine, a nozzle for applying cement to the overlasted margin of the upper of an inverted shoe, a feed roll positioned to engage the side of a shoe presented to said nozzle, pivotal supporting means for said nozzle permitting the work-engaging end thereof to be moved horizontally with respect to said feed roll, a valve for controlling the delivery of cement to the nozzle, and operator-controlled means for opening said valve and for swinging said nozzle.

5. In a shoe-bottom-cementing machine, a depending nozzle for applying cement to the overlasted margin of the upper upon the bottom of an inverted shoe, shoe-feeding means, an upright pivotal support for the nozzle displaced horizontally from the work-contacting end thereof, operator-controlled means connected by springs to said nozzle to swing it about its support thereby to vary the relation of the end of the nozzle to the feeding means.

6. A machine as in claim 5, having a stop to limit the movement of the nozzle by said treadle connection.

7. In a shoe-bottom-cementing machine, a nozzle for applying cement to the overlasted margin of the upper upon the bottom of a shoe presented to said nozzle in inverted position, said nozzle being inclined forwardly and downwardly with respect to the direction of movement of the shoe as it is presented, a movable support for the nozzle, a valve controlling the flow of cement to the nozzle, a treadle rod, a resilient connection between said rod and said valve, and another resilient connection between the rod and the nozzle for moving the same back and forth.

8. In a shoe-bottom-cementing machine, a nozzle for applying cement to the overlasted margin of the upper upon the bottom of a shoe presented to said nozzle in inverted position, pivotal supporting means for said nozzle, a valve controlling the flow of cement to the nozzle, a treadle rod, a resilient connection between said rod and said valve, and another resilient connection of greater strength than said first-mentioned connection interposed between the rod and the nozzle for swinging the same back and forth without affecting the valve.

9. In a shoe-bottom-cementing machine, a nozzle for applying cement to the overlasted margin upon the bottom of a shoe, a guide engaging the side of the shoe, a movable support for said nozzle permitting variation widthwise of the shoe of the relation of the work-engaging end thereof to said lateral guide, and means movable with the nozzle constructed and arranged to engage a characteristic feature of the shoe to assist in guiding the nozzle along the upper.

10. In a shoe-bottom-cementing machine for shoes having uppers some parts of which project beyond the normal surface of the upper, a feed wheel engaging the side of the shoe as it is held in an inverted position, a movably supported nozzle for applying cement to the overlasted margin of the upper, and a guide finger on said nozzle constructed and arranged to engage a characteristic feature of the shoe which parallels said margin and is unaffected by changes in thickness of the upper.

11. In a shoe-bottom-cementing machine adapted to coat the overlasted margin upon inverted shoes having an insole channel paralleling the outline of the bottom of the shoe, a laterally movable depending nozzle for applying cement to said overlasted margin, and a finger on said nozzle engaging said channel.

12. In a shoe-bottom-cementing machine, an abutment for engagement with the side of a shoe presented to the machine, said shoe being provided with an insole having a' groove parallel to its periphery, a nozzle mounted for movement with respect to said abutment for applying cement to the overlasted margin of the shoe, a finger on said nozzle adapted to be positioned in said groove, a spring connected to said movable nozzle, and operator-controlled means also con-' nected to said spring and movable to energize it to cause it to urge said nozzle toward said abutment thereby tending to hold said finger in said groove.

WILBUR L. MACKENZIE.

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