US2223440A - Work presenting means for shoe machines - Google Patents

Description

Dec. 3, 1940. c. G. BROSTROM 2,223,440

WORK PRESENTING MEANS FOR SHOE MACHINE Filed July 28, 1939 2 Sheets-Sheet l Dec. 3,- 1940.- c. e. BROSTROM -Z 3, 0

v WORK PRESENTING MEANS FOR SHOE MACHINE Filed July 28, 1939 2 Sheets-Sheet 2 Patented Dec. 3, 1940 WORK PRESENTING MEANS FOR snon MACHINES Charles G. Brostrom, Salem, Mass, assignor to United ShoeMachinery Corporation, Borough of Flemington, N. J., a corporation of New Jersey Application July 28, 1939, Serial No. 287,036

17 Claims.

This invention relates to machines for operating upon shoes and more particularly to work presenting means for. certain classes of shoe machines wherein the shoe is subjected to considerable vibration during the work treating op eration. While the invention is illustrated as embodied. in' a pounding machine adapted to.

proper manipulation of the. shoe by the operator in presenting different portions thereof for treatment by the tool. Another object of the invencmoperates with the rest of the work presenting means a work positioning member which not only co-operates with the rest of. the work presenting means in presenting a shoe for treatment by a tool butserves also to guard portions of the shoe not tobe treated at a given time. A further object of the invention is to provide a fluid-operatedmeans for effecting the desired movements of the shoe presenting means, preferably under control of a treadle which merely initiates operation of the fluid-operated means, thereby minimizing the work of the operator and leaving his hands free for the manipulation of the shoe.

It is an important feature of the invention that a shoe-backing member, while being movable. by treadle controlled means between work receiving and work presenting positions with respect to a work-treating tool, is yieldingly held inoperative position by spring means which absorbs to a substantial extent vibration in the shoe caused by the work-treating tool, which spring means is also sufiiciently yielding to permit manipulation of the shoe by the operator in presenting different portions thereof for treatment by the tool. Preferably, a work positioning memii ber co-operates with the shoe-backing member in presenting the shoe to the tool and serves also to guard from the tool some portion of the shoe not undergoing treatment at a given time,

In a preferred construction, there is provided a fluid-operated device to move the shoe-backing member alternately between work receiving and work presenting positions with respect to the tool. Since the operator simply initiates the operation of the fluid-operated device, his labor. is reduced to a. minimum. From: another viewpoint, the fluid-operated device energizes the spring by which the work-backing member is yieldingly urged into work-presenting position with respect to the work-treating tool.

Preferably, and as shown, the. shoe-backing member or pad is movably connected to a carrier in such manner that the padmay tilt. in an up-' and-down direction and in a side-toside' direction about a substantially horizontal axis and also from side to side about a substantially vertical axis. Because of this mounting of the pad it may tip in an up-and-down direction about. an axis extending lengthwise of the lasted shoe to present portions of the shoebottomproperly to the tool and also in a side-to-side direction about a substantially horizontal axis to facilitate tilting of the forepart. of the shoe in an up-anddown direction to present different portions of such forepart to the tool, this operation being facilitated by having the pad carrier slidable in an up-and-down' direction in its support, In order that. the lasted'shoe may be carried transversely of the moving; tool, the support for the pad carrier is pivoted for movement from side; to side, the pad itself being swivelly mounted in the carrier for turning movements about a substantially vertical axis so thatall portions of the: convexly curvedbottom of the forepart of the shoe: may be presented. to the tool during. movement of the shoe transversely of the tool. It will be readily understood that this special mounting of a pad upon a support spring-pressed in a direction toward the tool may operate satisfactorily in an organization which does not include power means for moving the pad between work receiving and work presenting positions with respect tothe tool.

With these and other features andadvantages in view, the invention will now be described in detail and then pointed out more particularly in the appended claims.

In the drawings:

Fig. 1 is a side view, partly in section, of a pounding machine illustrating one embodiment of the invention;

Fig. 2 is a sectional View of a workbacking pad and its supports showing adjustments possible to the-pad during operations on a shoe or shoe part;

Fig. 3 is a view, partly in section, of parts shown in Fig. 1 looking. from theleft in said figure; and

Fig. 4 is a detail View of a work rest shown in Figs. 1 and 3.

In the illustrated machine, which is, specially designed to support a lasted shoe during channel.

flap laying, side lasting and, particularly, pounding operations upon bottom portions thereof, there is shown a shoe bottom pounding tool 8 in the form of an endless belt Ill provided with spaced work contacting members l2. For a more complete disclosure of the belt I and members l2, reference should be had to United States Letters'Patent No. 2,087,241, granted July 20, 1937, upon application of D. W. Bunker. shown the said belt H) is supported in extended condition by a small wheel [4- and a large driven j treating tool are transmitted to the hands and body of the operator. These conditions may render theoperation of pounding machines too .laborious for some workers who might otherwise be suited for the job. Accordingly, I have provided a work presenting means designed to absorb to a substantial extent the vibrations of the shoe or, other work piece while, at the same time, permitting free manipulation of the shoe by the operator in presenting different portions thereof to the work treating tool.

' As shown, the work presenting'means comprises a stationary work rest 26 (Figs. 1, 3 and 4) carried fixedly but adjustably on an arm 22 extending upwardly from a bracket 24 rigid with the machine frame. As shown, the work rest 23 is slidably mounted on a guideway on the upper end of the arm 22 and is adjusted and held in adjusted position by a screw threaded member 26 (Fig. 1). Preferably and as shown, the work rest 20 is provided with an upwardly extending work guide and guard 23. The guide or gage 28 positions the work, such as a lasted shoe 3B, for treatment by the pounding elements [2, the guide 28 also serving to guard those portions of the shoe bottom which should not be contacted by the pounding elements.

For holding the shoe 33 in work treating position there is provided a work-backing padded member or pad 32 having a concavely curved surface (Figs. 1 and 2) to engage convexly curved parts of the lasted shoe whereby bottom parts of such lasted shoe may be pressed against the tool. Through suitable connections hereinafter described, the padded member 32 is carried by a rocking member 34 (Figs. 1 and 3) rotatably mounted on a stub shaft 35 fixedly carried by a block 36 which is in turn rotatably mounted on a shaft 31 rotatably carried in horizontally arranged-bearings 38, 43 rigid with the bracket 24. For yieldingly connecting the block 36 and the member 34 with the shaft 37 there is provided a spring 42 (Fig. 3) having one of its ends secured to the block 3i? while its other end is secured to a perforated collar 44 pinned to the shaft 31, the collar 44 having a plurality of holes (Fig. 1) in one of which the end of the spring 42 is selectively placed. It will be readily understood that, when the shaft 37 is rotated in a clockwise direction (Fig. 1), the padded member 32 will press a shoe 3!) against the pounding device and that the padded member 32 may yield away from the pounding device because of the spring connection comprising the spring 42.

Preferably, and as shown, power means under the control of the operator is provided for moving the padded member 32 to its Work presenting position, the said means being also operative to return the padded member 32 to its open position. As shown, said power means comprises pneumatically operated means which, in the illustrated construction, includes a piston cylinder 50 (Figs. 1 and 3) in which is slidably received a piston 5| having a piston rod 5:! which passes through the upper head 56 of the cylinder 53 and is pivotally connected at 53 to a forked member 60 which is pinned to one end of the shaft 31. At its other end the piston cylinder 5!! is pivotally mounted at (32 upon the stationary bracket 24. As shown most clearly-in Fig. 3 of the drawings, a port 64 opens into the upper end of the piston cylinder 50 while another port 66 opens into the lower end of the same piston cylinder, at flexible pipe 68 being so connected to the piston cylinder 50 as to communicate with said port 64 while port 66 communicates with another flexible pipe 16. It will be readily understood that the piston 5| will be moved in an upward direction when air under pressure enters through the port 66 from the pipe l0, while the same piston 53 will be moved in a downward direction when air under pressure enters the port 64 from the pipe 68. To furnish air under pressure to the pipes 68 and 70 there is provided a valve (not shown) in a valve chamber 12, the arrangement being such that air under pressure entering the valve chamber 12 by way of a pipe 14 may be directed to the pipe BBupon depressing a treadle 16 (while air under the piston 5| escapes by pipe (6) and that alternately the pipe it will be supplied with high pressure air through operation of thesame valve by another depression of the treadle Hi. In the latter case. while air under pressure is entering the cylinder 50 through pipe ll], air above the piston 5| is escaping through pipe 68. In other words, when the padded member or work rest 32 is in open position, that is, away from the pounding element 8, depression of the treadle 76 will operate the valve in the chamber 72 to send air under pressure through the pipe I!) and through the port 66 into the cylinder 50 with the result that the piston 5| is forced upwardly to rock the shaft 31 and therefore the padded member 32 toward the pounding element 8. As soon as the treadle has been depressed to'accomplish this result, it is at once released since the air under pressure will hold the padded member 32 in work presenting position until the treadle 16 is again depressed. When this occurs the port 66 permits the escape of air from the lower part of thecylinder 50 while air under pressure is entering the upper part of the cylinder 50 through the port 34. It is clear, therefore, that the piston 5! is movedupwardly upon depression of the treadle 16 to effect movement of the pad 32 in' the direction in which it presses a shoe against the pounding tool, whereas a second depression of the treadle 76 results in moving the piston 5| downwardly to effect a rocking movement of the shaft 31 in a direction to move the pad 32 away from the pounding tool where it remains until the treadle 16 is again depressed. It will further be clear that movement of the shaft 31 in the direction of effecting movement of the pad 32 toward the pounding tool does not effect positive movement of the pad in the said direction but serves rather to energize the spring 42. In other words, the pad 32 is moved yieldingly into operative position, since'the member 34 is yieldingly connected to the shaft 3'! through the spring 42. I n n In order that the operator may freely manipulate the lasted shoe 30 while it is being pressed against the pounding tool 8 by the pad 32, the

latter is mounted for substantially universal movement. Upon inspection of Figs. 1 and 2 of the drawings, it will be observed that the pad 32 is pivoted for a relatively limited up-and-down rocking movement about a substantially horizontal pin 80, limits being provided to this rocking movement by converging surfaces 82 on the pad (Fig. 2) which contact selectively with the adjacent surface of a plate 84 at each end of its rocking movement. Since the pin 80 is carried bya larger pin 86 rotatable in a bearing block 88, it is-clear that the pad 32 may also rock from side to side about a nearly horizontal axis furnished by the pin. 86, means being preferably provided to return the padded member 32 to the position shown in Figs. 1 and the said means comprising a spring 90 secured at one end to a stud 92 carried by the pad 32 and at its other end to a second stud 94 carried by a slidable carrier member 93, both studs being located in a vertical plane passing centrally through the pad from front to rear. Upon inspection of Figs. 1 and2,'it will be seen that the slidable carrier 36 permits sliding movement of the pad 32 in a vertical -direction thereby accommodating the pad to shoes of different sizes and permitting extreme up-and-down tipping movements of the toe end of the lasted shoe. To facilitate-adjustment of the pad to different parts of the shoe and to shoes of different contours, the block 88 is also movable, as clearly shown in Fig. 2, it being fixedly carried at the upper end of a pin 93 swiveled in the carrier 96. In order to permit free movement of the shoe 3!) in a direction crosswise of the belt H], the pad 32 and its carrier 96 may be rocked about the stub shaft 35 (Figs. 1, 2 and 3). A spring 98 (Fig. secured at one of its ends to a stud I fixed to block 33 and at its other end to a stud I02 fixed to the bottom surface of the rocking member 34 tends to keep the pad 32 and its carrier 96 upright or vertical as distinguished from a'sidewise position on the stub shaft 35. Because of the described mounting of the pad 32, it may yield about the substantially horizontal pin 80 in a tipping movement in a vertical plane so as to fit its concavity to the rounded surface of the forepart ofthe shoe and to permit proper presentation of the shoe bottom to the tool. The pad 32 moves also about the substantially horizontal pin 85 in a rocking movement from side to side in order to accommodate up-and-down tipping movements of the toe end of the shoe. Further, the said pad may swivel about the vertical pin 98 andthen be moved bodily in a direction crosswise of the tool 8 to secure treatment of all parts of the convexly curved bottom of the forepart of the shoe. Hence, when a lasted shoe 33 is being pressed against the pounding tool 8, it may be rocked to lift or to depress the toe end of the shoe, largely because of the pivot furnished by pin 86. Further the shoe may be rocked about an axis extending lengthwise of the shoe because of mounting of the pad on the pin 83. Again, the lasted shoe may rock about a vertical axis (the pin 98) to press a selected portion on the convexly shaped shoe bottom of the lasted shoe more firmly against the pounding tool, the lasted shoe in this case turning about a vertical axis passing transversely of the last. In addition to all this, the pad 32 may be moved upwardly, through upward movement of the carrier 96, to accommodate a tippingmovement of the lasted shoe which carries the toe portion thereof higher than the" plane of the upper surscribed permits movements of the shoe manually by theoperattor, suitable to secure treatment of all parts of the forepart of the shoe during operations thereon, whether these operations be pounding, channel flap laying or side lasting.

In operating the illustrated machine, a lasted shoe is placed upon the work rest 20 and in engagement with the guide or gage member 28 as a preliminary'to depression of the treadle 16. Upon depressing the treadle, the pad 32 is moved into engagement with the convexly shaped portion of the forepart of the shoe to press a part, of the shoe bottom against the tool 8. Because of the spring 42 interposed between the shaft 3? and the pad 32 the latter is yieldingly held against the lasted shoe so that the latter may be readily manipulated to present different portions of the forepart shoe bottom for treatment by the pounding tool. To release the shoe, the operator again depresses the treadle l3 whereupon the pad 32 moves to the left in Fig. 1 and remains in that position until the treadle is again depressed.

To operate upon the shank part of the shoe bottom, the lasted shoe is presented to the work rubbing elements l2 where they are backed by the wheel M of relatively small radius, as indicated in dash lines in Fig. 1. For this operation, no support but the hands of the operator is needed.

Having described my invention, what I claim as new and desire to secure by Letters Patent of of a lasted shoe and movably mounted in a position to back the shoe undergoing treatment by said tool, means operable to move the'shoebacking member toward the tool, and spring means interposed between said means and the shoe-backing member and so tensioned as to permit the latter to yield, under pressure by the operator, away from the tool while the shoe is undergoing treatment, thereby facilitating the manipulation of the shoe by the operator.

2. In a machine for operating upon shoes, a work-treating tool, a shoe positioning member stationary with respect to the tool, a member to engage the upper of a lasted shoe and movably mounted in a position to back the shoe undergoing treatment by the tool, means to move the shoe-backing member toward the tool, said means then becoming stationary, and a spring interposed between said means and the shoe-backing member to press the shoe against the shoe positioning member thereby to present the shoe to the tool for treatment, said spring yielding, under pressure by the operator, to permit the shoebaoking member to move in a direction away from said tool during treatment of the shoe, thereby facilitating manipulation of the shoe by the operator to present diiferent parts thereof to said tool.

3. In a machine for operating upon shoes, a work-treating tool, a padded member having a concave surface to engage the upper of a lasted shoe and pivotally mounted in .a position to back the shoe undergoing treatment by said tool, manually controlled means to rock the padded member toward the tool, and a spring between the padded member and the manually controlled rocking means therefor to absorb vibration. in the shoe caused by the work-treating tool, said spring serving also to permit the padded member to yield away from the tool under pressure by the operator while the shoe is undergoing treatment, thereby facilitating manipulation of the shoe by the operator to present various portions of the shoe for treatment by the tool.

4. In a machine for operating upon shoes, a work-treating tool, a shaft mounted in the frame of the machine for rocking movement, a work- 'backing member movably'mounted on said shaft in a position to back a shoe undergoing treatment by said tool, manually controlled means to rock the shaft and the work-backing member toward the, tool, and a spring connection between the shaft and the work-backing'member to permit the latter to yield away from the tool while the shoe is undergoing treatment.

5. In a machine for operating upon shoes, a

work-treating tool, a shaft mounted in the frame of the machine for rocking movement, a bracket supporting said shaft, a shoe positioning member rigid with the bracket, a shoe-backing member loosely mounted on the shaft, a spring between the shoe-backing member and the shaft tending to press the shoe against the tool and against the shoe-positioning member, and manually controlled means to rock the shaft and. the shoe-backing member toward the tool to present the shoe to the latter for treatment, said shoebacking member being arranged to yield against thepressure of said spring during treatment of the shoe by said tool. 6, In a machine for operating upon shoes, a work-treating tool, a shoe positioning member stationary with respect to said tool, a shoe-backing member mounted for movement toward and from said tool and positioning member, a spring arranged to back the'shoe-backing member so that the latter may yield away from the tool, and fluid-operated means under the control of the operator to energize said spring Wherebythe shoe-backing member presses the shoe yieldingly against the tool.

7. In a machine for operating upon shoes, a work-treating tool, a shoe positioning member stationary with respect to the tool, a pad having a concave surface to engage the upper of a lasted shoe and movable to press the shoe against the tool, the pad and the shoe positioning member co-operating to present the shoe'to the tool, spring means to hold the pad yieldingly in the direction of the tool, and fluid-operated means under control of the operator to move the pad between operative and inoperative positions,

8. In a machine for operating upon shoes, a rotary work-treating tool, a shoe positioning member stationary with respect to said tool and having a part to protect a part of the shoe from said tool, a shoe-backing member pivotally mounted for movement toward and from said tool and positioning member, and fluid-operated means under the control of the operator to move the shoe-backing member to press the shoe against the tool and against the shoe positioning member.

9. In a machine for operating upon shoes, a rotary work-treating tool, a shoe positioning member stationary with respect to the tool, a pad operative to engage the upper of a lasted shoe and to pressjthe shoe against the tool, the pad and the shoe positioning member co-operating to present the shoe to the tool, spring means to hold the pad *yieldingly in the direction of the tool, and fluid-operated means under control of the operator to move the pad between operative and inoperative positions and to energize said spring whereby the pad is yieldingly pressed toward said tool.

10. In a machine for operating upon shoes, a rotary tool for, treating the shoe, a shaft arranged in parallelism with the axis of the rotary tool, a padded member toengage the upper of a lasted, shoe and'mounted on said shaft for movement toward said rotary tool to press a sole part of the shoe against the tool, a shoe positioning member stationary with respect to said tool, said positioning member serving also to protect a part of the shoe from contact with the rotary tool, and fluid-operated means for rocking the shaft and the padded member mounted thereon to press the shoe against the rotary tool and against the shoe positioning member.

11. In a:machine'f0r operating upon shoes, a rotary tool for treating the shoe, a shaftarranged in parallelism with the axis of the rotary tool, a shoe-backing member mounted on said shaft for movement toward and from said rotary tool, a bracket having journals for said shaft, a shoe positioning member carried by said bracket to locate the shoe in proper relation to the rotary tool, a spring between the shoe-backing member and the shaftoperative yieldingly to connect the shoe-backing member to the shaft, whereby the shoe-backing member may yield relatively to the rotary tool, a fluid-operated device having a pivotal connection with the shaft to rock the latter whereb-y'the spring is energized and the shoe positioning. member is moved to press'a shoe yielding'ly against the rotary tool, the shoe-backing member being subsequently moved away from the tool upon rocking the shaft in the reverse direction, and a treadle operated means for controlling said fluid-operated device.

12. me machine for operating upon shoes, a rotary tool for treating a shoe, a shoe-backing member pivotally mounted for movement toward 'andfrom said rotary tool, a shoe positioning member stationary with respect to the tool to locate the shoe in proper relation to said tool, a spring yieldingly to back the shoe-backing member, whereby the shoe-backing member may yield relatively to the rotary tool; a fluid-operated device having" a piston operatively connected to said shoe-backing member, said device having also a casing in which said piston may be reciprocated, said casing having also ports adjacent opposite ends thereof, and treadle operated means for controlling the introduction of a pressure fluid alternately through said ports to operate the piston alternately in opposite directions, whereby the shoe-backing'member will be moved between work receiving and work presenting positions with respect to the rotary tool.

13. In a machine for operating upon shoes, a rotary tool for treating the shoe, a shaft arranged in parallelism with the axis of the rotary tool, a shoe-backing member mounted on said shaftfor movement toward and from said rotary tool, a bracket having journals for said shaft, a shoepositioning member carried by said bracket to locate the shoe in proper relation to the rotary' tool, a spring between the shoe-backing member and the shaft operative yieldingly to connect the shoe-backing member to the shaft, whereby the shoe-backing member may yield relatively to the rotary tool, a fluid-operated device having a piston pivotally connected to said shaft, said device having also a casing in which said piston may be reciprocated, said casing having ports adjacent opposite ends thereof, and treadle operated means for controlling the introduction of the pressure fluid alternately through said ports to operate the piston in reverse directions whereby the shaft Will be rocked to move the shoebacking member between work receiving (and work presenting positions with respect to the rotary tool.

14. In a machine for operating upon shoes, a tool, a shoe-backing member movable to press a shoe against the tool, a rocking member pivotally,

mounted to move the shoe-backing member toward and away from said tool and to hold it yieldingly toward said tool, a carrier for the shoebacking member slidably mounted for up-anddown movement in the rocking member, and two pivot pins extending at right angles to each other and operative to connect the shoe-backing member movably to the slidable carrier so that said backing member may tip in an up-and-down direction and also in a side-to-side direction, whereby a lasted shoe may be tipped about one of said pins in directions toward and away from the tool about an axis extending in the direction of the length of the lasted shoe, the shoebacking member being also movable to tip the forepart of the lasted shoe in an up-and-down direction by reason of the sliding movement of the carrier in an up-and-down direction in conjunction with a tipping movement of the backing member about the other one of said pins.

15. In a machine for operating upon shoes, a

tool, a shoe-backing member movable to press a shoe against the tool, a supporting member mounted to move the shoe-backing-member toward and away from said tool and to hold it yieldingly toward said tool, a carrier for the backing member slidably mounted for up-anddown movement in the supporting member, pivot pins extending at right angles to each other and operative to connect the backing member movably to the slidable carrier so that said work backing member may tip in an up-and-down direction and also in a side-to-side direction, whereby a lasted shoe may be tipped about one of said pins in directions toward and away from the tool about an axis extending in the direction of the length of the lasted shoe, the shoe-backing member being also movable to tip the forepart of the lasted shoe in an up-and-down direction by reason of the sliding movement of the carrier in an up-and-down direction in conjunction with a tipping movement of the work backing member about another of said pins, and means for supporting the shoe-backing member for movement bodily with respect to said tool to subject successive portions of the shoe bottom to treatment by the tool.

16. In a machine for operating upon shoes, a work-treating tool, a pad having a concave surface for engaging the convexly curved surface of the forepart of a lasted shoe, a rocking member for supporting said pad in movements toward and from a work-treating tool, a carrier for said pad slidably movable in an up-and-down direc tion in said rocking member, a pivot pin supporting said rocking member for side-to-side movements in directions substantially at right angles to the said movement of the rocking member in a direction toward and from the tool, whereby a lasted shoe backed by said pad may be moved bodily with respect to the operating tool, and pivotal connections between the pad and the slidable carrier arranged to permit a rocking movement of the pad about a nearly vertical axis whereby the lasted shoe may not only be moved bodily with respect to the tool but also rocked about an axis in a vertical plane passing transversely through said lasted shoe to present difierent portions of the convexly curved bottom surface of the shoe for treatment by said tool.

1'7. In a machine for operating upon shoes, a tool, a shoe-backing member movable to press a shoe against the tool, a supporting member mounted to move the back member toward and away from said tool and to hold it yieldingly toward the tool, a carrier for the shoe-backing member slidably mounted for up-and-down movement in the supporting member, and three pivot pins extending at right angles to each other and operative to connect the shoe-backing member movably to the slidable carrier so that said backing member may tip in an up-and-down direction and in a side-to-side direction about a substantially horizontal axis and also in a side-to-side direction about a substantially vertical axis, whereby a lasted shoe may be tipped toward and away from the tool about an axis extending in the direction of the length of the lasted shoe and also about a horizontal axis extending transversely of the lasted shoe to raise or lower the iorepart of the shoe, said lasted shoe being also movable about a substantially vertical axis to present successive portions on the convexly curved bottom of the lasted shoe for treatment by said tool.

CHARLES G. BROSTROM.

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