US1412894A - Shoe-treating machine - Google Patents

Description

J. H. RIGBY.

SHOE TREATING MACHINE. APPLICATION FILED APR. 3, I919.

2 SHEETSSHEET I.

1. H. RIGBY.

SHOE TREATING MACHINE.

APPLICATION FILED APR- 3, 1919.

Patented Apr. 18, 1922.

- 2 SHEETS-SHEETZ.

JOHN" H. REGBY, 0F BEVERLY, lii'ASfiEAChUSETTS,

ASSZGNGB T0 UNITED SHOE Application filed. April 3,

aZ-Z whom '52 may concern Be it known that 1, JOHN H. Riser, a citizen ot the United States, residing at Beverly, in the county of Essex and State of lvlassachusetts, have invented certain Improvements in Shoe-Treating Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for treating shoes and more particularly to mechanism for controlling the pressure be tween the shoe and tool as they are relatively moved. Such mechanism possesses special advantages in connection with automatic burnishing or edge setting machines and as herein ti-LSi 03; is z: sociated with such machine, but certain aspects ot the present invention be advantageously employed in other machines tor treating shoes.

in automatic burnishing or edge setting machines of the general type mentioned, the shoe is ordinarily held by or clamped on a jack and presented to the tool which is moved over or along the surface of the shoe to be treated by automatically produced relative movement between the tool and the work, and means are provided for producing pressure between the work and tool as they are relatively moved. The pressure between the work and the tool, however, is liable to vary along different portions of the work owing to the varying curvature of the surface treated by the tool and such variations of pressure as do occur are unrelated to the necessities of the work and conse-. quently are productive of non-uniform results throughout the treated portions of the shoe, and, in some cases, impair or injure certain portions of the work. The lateral or side portions of the torepart edge of a shoe are nearly fiat or straight from the side extremity of the toe curve to the ball, the toe is much more abruptly curved and in some extreme styles may be quite sharp, while the contour from the torepar't to the shank presents a more or less abrupt reverse curve. In spade shank shoes, for instance, there is a comparatively sharp corner at the junction of the torepart and shank which is liable to be crushed or deformed by iipeciiication of LettersiPetent.

SK-IOE-TEEATII\ G MIACHINE.

Patented Apr. 18., 19922.

1919. Serial No. 287,110.

the, tool, because at this point the shoe sole ES. not able to stand the pressure found desirable between the shoe and tool along other portions of the shoe.

An important feature of the presentinvention, therefore, consists in means, which at a predetermined part of the shoe, acts in opposition to the pressure producing means to control the pressure between the shoe and tool and adapt it to the requirements of the shoe As the shoe-and tool are automatically moved relatively to present different portions of the shoe to the action of the tool, permissive following movement of the tool toward and from the work is obtained by the yielding action of the pressure producing spring usually employed as a convenient form of yielding pressure means. Such movement or the tool, however, causes variations in the pressure between the work and the tool and, perforce, non-uniform effects on the work. Another important feature of the present invention, therefore, consists of novel means for automatically controlling the pressure producing spring to maintain substantially uniform pressure between the work and tool.

The present invention also comprises various novel features and combinations of parts in addition to those recited, all oi which will be fully described hereinafter and for which protection will be soughtinthe appended claims.

in the drawings Fig. 1 is a side elevation of a machine embodying the present invention, some of the parts being broken away for the purpose of clearness oi? illustration;

Fig. 2 is a perspective view on a large scale showing certain parts for automaticallv controlling the pressure between the work and the tool, some of the parts being om itted and broken away; i

Fig. 3 is an under-side view of the parts shown in Fig. 2, some of the details being broken away.

The machine herein illustrated as embody ing the present invention is an automatic burnishing or edge-setting machine wherein the edge-setting tool 10 is carried in the head 11 in which it is vibrated in a substantially horizontal plane to act upon the edge of a shoe a, as indicated in Fig. 1. The

I the pressure lever 14 and has its extremities connected to the member-13 and a link 16, the lower end of the link being pivotally connected to the machine frame or a stationary member at 17, as indicated in Fig. 1.

The pressure lever 14 is pivoted to the main frame at 18, the construction being such that rotation of the pressure lever about its pivot 18 will move the edge-setting tool to the right or left, as indicated in Fig. 1; The members 12, 13, 14, 15 and 16 constitute a parallel motion mechanism which may be substantially as more fully described in the patent to Keall, Gouldbourn & Jerram 'No. 1,078,684, dated November 18, 1913.

The shoe a is supported by or clamped in a jack 19, mounted on a shaft 20 which is carried in mechanism which permits it to move in a horizontal plane and to turn about a vertical axis. A cam 21 on the shaft 20 is automatically rotated and translated in a horizontal plane to turn the shoe from one side to the other and keep its edge presented to the edge-setting tool 10.

All the mechanism thus far described may be substantially identical with that shown in the patent mentioned, and reference is made to the patent for 'a further description and illustration.

A. power transmitting element 22, preferably constituted as a universal. joint, is connected with the shaft 20 and a cam 23 is suitably supported for rotative movement with the shaft 20 through the universal joint connection 22.

A fulcrum shaft 25 is mounted in'suitable bearings 25" formed in, the machine frame .or parts carried thereby, and has secured thereto the starting or controlling lever 26 and an arm 27,thcconstruction heing such that movement of the starting or controlling lever 26 will effect rotative movement of the shaft and corresponding movement of the arm 27. A spring 29 has one end adjustably connected to the arm 27 at 28, F ig. 2, and the other end attached to an arm 30 projecting from a sleeve 31 loosely mounted on the fulcrum shaft 25.

The sleeve 31. has extending therefrom the arms 31* which are connected by suitable links 32 to a rod or plunger 83, the lower end of which works in a dashpot 34, Fig. 1. A rod 35 is secured to the plunger and extends slidably through an abutment 36, Fig. 1.. 'pivotal y mounted at 36* on the pressure lever 14. A spring 37 encircles the rod 35 and is confined between the abutment 36 and a collar 38 secured to the rod The purpose of the spring 37, as will hereinafter more fully appear, is to produce pressure between the work and the tool as the two are relatively moved and for the purposesof identification the spring37 (ill he hereinafteridentified as the pres sure spring. The spring 29 hereinbefore mentioned as extending between the arm 27 and the sleeve 31, is stronger than the pressure spring 37 and for the purpose of identification it may be known as the cornpression spring because, through its action under control of means to be hereinafter described, the pressure effect of the pressure spring 37 is increased.

when the starting 'or controlling lever 26 is turned contra-clockwise, Fig. l, and F 2, it rocks the fulcrum shaft 2.) and arm 27, which, through the spring 29, sleeve 31. and connections, forces the plunger 3 and rod 35 upwardly in Fig. 1 through the abutment 36, thereby placing the pressure spring 37 under compression. The pressure lever 14 is thus actuated through the pressure spring 37 to produce pressure between the tool and the work, such pressure, in the present instance of the invention, being transmitted through the tool.

The starting or controlling lever 26 has a catch 89 for retaining it in position to which it may have been moved by the attendant, and said catch is automatically released when the action of the tool upon the work is completed as described in the patent hereinbefore mentioned. When the starting or controlling lever is thus released, the pressure spring 37 actsto force the plunger 33 back into the dashpot 34, carrying the starting or controlling lever clockwise and. slacking off the pressure from the pressure lever 14.

Loosely mounted on the shaft 25 is a second sleeve 40 having an arm 41 carrying a roll 42 which. engages the cam23. An arm 43 on the sleeve 40' extends towards and opposite an arm 44 extending from the sleeve 31, the construction being such that under the impulse of the compression spring 29 the arm 44 will bear against the arm 43 which, through the sleeve 40 and arm 41 is responsive to the controlling influence of the cam 23.

In order that the arms 43 and 44 may be properly associated in cooperative relation, one of said arms, in the present instance the arm 44, is provided with an'adjustable stud 45 and a set nut, as indicated in Fig. 3, serves to maintain the adjustable stud in fixed adjusted position. i 7

From the construction described it will. be evident that when the starting or controlling lever 26 is moved contraclockwise. Figs. 1 and 2, the'compression spring 29 will be placed under increased tension to thereby yieldingly' turn the sleeve 31 and,

perforce, place the pressure spring-37 in pressing relation with its associated parts to produce pressure between the work and the tool. The parts being in the position stated and the machine in operation, should a high part of the cam 23 engage the roll 3-2 as the cam revolves, the arm d3 will act through the arm as to turn the sleeve 31 against the stress of the spring 29 and therey relieve the pressure exerted by the press1 e spring 37 and modify the pressure between the work and the tool. lVhen the high part of the cam has passed the roll the stronger spring 29, acting through its connection with the rod 35, will again restore the pressure spring 37 to its original pressure transmitting position.

The cam 23, as hereinbofore described, rorates with the shaft- 20, and its contour will he so designed as to diminish the pressure (JtlUll of the spring 37 and the corresponding reaction of the pressure lever-1e when the sharply curved portions of the sole edge are presented to the tool 10. The cam 23 may be variously contrived with proper contour either to engage the roll 42 only at isolated intervals predetermined by the portion of the work to be treated by the tool, thus leaving the spring 3'7 compressed by the entire tension exerted by the spring 29 at all other times; or it may be so formed as to engage the roll 4-2 continuously, therel e'l'l'ecting a positive continuous control over the action of the stronger spring on the weaker one and correspondiiwly varying the pressure hetweenthe work and the tool.

As the shoe turns from one side to the other, causing relative movement between the sole edge and tool, there will be slight variations in the absolute position of the point of contact of the tool and work. This necessitates slight movements of the tool carrying mechanism, and, in heretofore existing machines, consequent variations in the pressure between the tool and the work. lVhen such irregularities are found to cause noticeable impairment of the quality of work done, which may occur on shoes of extreme style, the cam 23 will be designed to compensate for the lack of uniformity in pres sure on those parts of the work and produce'uniformity of pressure throughout, or relieve surh pressure in whole or in part on any portion of the shoe where the full pressure between the tool and the work is not desired.

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

1. In a machine of the class described, the combination of a work support, a tool for acting along different portions of the work as the work and tool are relatively moved. means for producing pressure be tween the work and tool, and means acting in opposition to the pressure producing means for adapting the pressure between the work and tool to the character of the work.

2. In a machine of the class described, the combination of a work support, a tool for acting along different portions of the work as the work and tool are relatively moved, means for producing pressure between the work and tool, and automatic means acting in opposition to the pressure producing means to reduce the pressure between the work and the tool at a predetern'iined part of the work as the work and tool are relatively moved in contact with one another.

3. In a machine of the class described, the combination of a work support, a tool, pres-- sure producing means acting as the work and tool are relatively moved to maintain pressure between the work and tool, and pressure relieving means acting positively in opposition to the pressure producing means along 'predeterminet portions of the work to vary the pressure between the work and tool during the action of the tool.

at. In a machine of the class described, the combination of a work support, a tool for acting along different portions of the work as the work and tool are relatively moved, a yieldable pressure transmitter for maintaining pressure between the work and tool, and means acting automatically in opposition to the pressure transmitter to modify the pressure between the \'\'O1{ and tool along a portion of the work.

5. In a machine of the class described, the combination of tool for actin along the edge of a shoe, pres-sure means acting yieldingly through the tool for maintaining pressure between the shoe and tool as they are relatively moved, and pressure relieving means acting automatically to positively inhibit the pressure exerted by the pressure means as the tool moves along a predetermined portion of the shoe. I

6. A n organized machine for automatically treating shoes, comprising, in combination, a shoe support, a tool for acting along different portions of a shoe on said support, means including a spring for causing pressure between the shoe and tool as they are relatively moved, and means acting automatically to control directly the effective end of the spring as the tool moves along the shoe.

7. In an organized machine for automatically treating shoes, the combination of a tool for acting along portions of the shoe, pressure means including a spring for causing pressure between the shoe and tool as they are relatively moved, a pressure controlling cam, and connections between the cam and pressure means for effecting a positive limit to the pressure between the work and tool along a predetermined part of the work. i

8. In a machine of the class described, the combination oi a work support, a tool, means for causing pressure between the work and tool as they are relatively moved, a pressure controlling cam and means responsive to the action of the cam to predeterminately permit increase or positively decrease the pressure exerted by the pressure causing means.

9. in a machine of the class described, the :"ion of a work support, a tool, a spring or proi'nicing pressure between the work and tool as they are relatively moved to present different portions of the work to the action oi the tool, a pressure controlling cam, and means responsive to-the action of the can; for directly controlling the active end of the spring.

10. in a machine of the class described, the combination of a work support, a tool for acting along the edge oi? the work, a pressure pro hieing spring acting through the tool to produce pressure between the work and tool, a pressure controlling cam, and

connections between the cam and pressure producing spring including a compression spring tor changing the pressure of the tool upon the work along different parts of the work.

1.1. in an automatic edge setter,

bination oi a tool for acting along the 'edge oi a shoe, a spring for pressing the tool against the edge of the shoe, a cam, and connections between the cam and spring includ ing a secono stronger spring for changing the pressure'o'f the tool against the edge of the shoe along different portions thereof.

12. In an automatic-edge setter, the combi.

nation of a tool for acting along the edge of a shoaa pressure spring for pressing the tool against the edge oi. the shoe, a stronger compression spring, and a cam controlling the action of tl'ieconipression spring vtor modilt'ying the pressure oi the tool against the shoe.

13. In a machine of the class described, the combination of a work support, a tool for acting alongdiilerent portions of the work, a pressure spring for causing pressure between the work and tool as they are relatively moved, a stronger spring normally tending to increase the power of the pressure spring, and means acting in opposition to the stronger spring to decrease the power the com-' of the pressure spring along predetermined portions of the worlr.

A 1 In a machine oi' the class described, the combination of a worlrsupport, a tool, means for exerting a yielding pressure be tween the work and tool as they are relatively moved to present diiierent portions of the n to the tool, means operable at will for placing the yielding pressure means in pressure exerting position, spring normally tending to increase the pressure of the yielding pressure means, and a cam acting in opposition to the spring for modifying the pressure along a predetermined part of the work.

15. A; machine of the character described, comprising, in combination, a tool for treating different portions of a shoe, pressure means for producing pressure between the shoe and tool as they are relatively moved to present (afferent portions of the shoe to the tool, means operable by the attendant for placing the pressure means in position to exert pressure, a spring tensioned by the attendant and tendlng to increase the pressure exerted. by the pressure means, and a cam acting automatically as the tool moves along a predetermined part of the shoe to change the pressure between the shoe and tool.

16. In a machine of the class described, is combination of a tool for acting along ie edge of a shoe, a spring forpressing the tool against the edge of a shoe, having one end connected with the tool, a n'iovabl abut ment to which the other end of the s nin is connected, a second and stronger spring ha'v n one end connected to the abutment and the other end anchored, whereby stress may be transmitted from the st-rongerspring to the other spring through the abutriient, and acani and connections for controlling the abutment to regulate the stress transmitted. troin the stronger sprin l7. in a n'iachine of the class described, a tool for acting along the edge of a shoe, and means for pressing the tool and shoe together comprising a stronger and aweaker spring arranged in tandem, and means for predeterminately positioning the junction point of the springs, whereby the stress transmitted from the stronger to the weaker can be controlled;

In testimony whereof I name to this specification.

have signed my

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