US1685387A

US1685387A - Shoe-pressing machine

Info

Publication number: US1685387A
Application number: US42213A
Authority: US
Inventors: Erastus E Winkley; Fred V Hart
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1925-07-08
Filing date: 1925-07-08
Publication date: 1928-09-25
Anticipated expiration: 1945-09-25

Description

Sept. 25, 1928.

E. E. WINKLE Y EFT AL SHOE PRES SING MACHINE 5 2 4'' m M raw; mmw 1| 1 K m z n 3 m. m m

Patented Sept. 25, 1928.

UNITED STATES P a-TENT OFFICE.

ERAs'rUs E. WINKLEY AND' FRED v. HART, or LYNN, massncnnsl'r'rs, ASSIGNOBB TO UNITED SHOE MACHINERY CORPORATION, or rA'rnnsoN, NEW JERSEY, A COB- IORATION OF NEW JERSEY.

SHOE-PRESSENG MACHINE.

Application flied July 3, 1925, serial No. 42,213. Renewed December 19, 1927.-

This invention relates to shoe pressing machines and is illustrated as embodied in a leveling machine of the so-called automatic roll type.

In the use of this type of machine as commonly constructed, the shoe is held on a jack and oscillated back and forth undera heavily spring=pressed leveling r'o'll located at the end of a horizontally pivoted arm which permits the roll to yield vertically under the spring pressure in accordance with the irregnlarities in contour of the shoe sole.

It was found that leveling shoes having high arched shanks the roll might drop from the forepa-rt' to the shank with a considerable blow instead of rolling down into the shank with a substantially uniform pressure, and

that in the reverse movement the roll tended to drag the damp soletowardthe ball line, sometimes resulting. in undesirable distort-io'n'. To meet this difiic'ulty, there was pro-" vided a cam which controlled the spring pressure, having depressions into one or another of which the cam follower fell as the roll 'ass'ed at difi'erent times over the ball line of t 1e shoe, thereby relieving a substantial part or all of the spring pressure as the roll passed over this part of the shoe.

However, in the case of mens shoes, for ex ample, which have much more nearly flat bot toms, such variation of the roll pressure was found to be unnecessary. With this in view, and to provide a leveling machine, of the roll pressure type which would be better adapted for treating both of the types of shoes reterred to. the invention of E. E. VVinkley and H. A. Davenport, described and claimed in Letters Patent No. 1,667,761, granted on May 1, 1928, provided for the use of removable plugs for the depressionsvin the cam above mentioned, which raised the operative surface of the cam ats'uch places to the. level of the neighboring portions of the cam.

It is a principal object of the present invention still further to improve shoe-pressing or leveling" machines in this respect and to nf'ovide simple and conveniently operable means for chai'ig'ii'ig a ressu'r'e cycle adapted for one shoe to a cyce adapted for shoe of different characteristics. To this end the illustrative machine is provided with two alternative pressure mechanisms permanently in the machine, such that one can be substirated for the other at will. Thus any difliculty due to loss of non-permanent parts of the machine is avoided, and much time can be saved in changing the machine over from one condition to the other. One of these mechanisms relieves the pressure at the desired points and the other diminishes the relief or entirely prevents relief at some or all of such points. In the embodiment shown, there is provided a primary cam and a cooperating pressure member operating to transmit pressure to the shoe relieved by suitable depressions in the cam, and a secondary cam and pressure member operating when desired to inhibit pressure relieving movements of the primary pressure member, which is thus pre-' vented from falling into the relief depressions in the primary cam.

In one aspect, therefore; the invention consis'tsin .a leveling machine having a ressure mechanism with a pressure cycle o'f certain characteristics and a mechanism for varying this cycle better to adapt it to the needs of shoes to which these characteristics are not fully adapted.

In another aspect the invention comprises primary and secondary pressure mechanisms, the latter of which inhibits certain operative characteristics of the former.

In another aspect the invention comprises a pressure member arranged to be governed by either of a plurality of pressure controlling cams at will.

In another aspect the invention provides means operating automatically to decrease the pressure between the shoe and the leveling tool at predetermined points in the operation of the tool and means adjustable by the operator to modify the operation of the lastnamed means. i

These and other features of the invention comprising certain novel combinations and arrangements of parts will be understood from the following description of a preterred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings in which,

Fig. 1 shows a fragmentary side elevation of a machine of the type illustrated in the Letters Patent hereinbefore mentioned with the present invention embodied therein, and

Fi 2 is a perspective of a part thereof.

In the disclosed machine, the. shoe 10 is held in a jack comprising aheel post 12 and a toe post 14 mounted to oscillate upon a rock plane. A heavy spring 24 rests at its lowerhnd upon a link 26 pivoted at 28 on the frame and having a vertical link 30 pivoted to it at its front end. The upper end of the link 30 is pivoted to the arm 20. The upper end of the spring 24 supports'a plunger 32 which is arranged to be forced downwardly by a lever 34 pivoted at- 36 onthe main frame and connected by a link 38 to a lever 40 pivoted at 42 on the main frame. The lever 40 carries a cam roll 44 at itsend substantially under the link 38 which contacts with a cam 46 which is rotated on a shaft 48 once in each operation cycle. The'low placesornotches on the cam permit the link 38 to drop, releasing the spring 24 and thus diminishing or relieving the pressure on the shoe. The high points of the camraise the link 38 and force down the spring, thus forcing the roll 18 firmly against the shoe. In other words, the low places correspond to pressure minima, and'the high places to ressure ma-Xima.

Fig. 1 shows the machine at the beginning of a leveling operation with the cam roll 44 .in the notch 50. The cam as shown in Fig: 1

rotates counter clockwise. The high portion to the ball.

the toe down the forepart to the ball line. The low portion 54 releases the pressure at the hall line. The hi gh portion 56 provides for traverse of the roll down the outside of the shank and back again to the ball. The low portion 58 provides for a release of pressure at the ball line. The high portion 60 provides for travel of the roll along the outside of the forepart to the toe and down the inside of the forepart to the ball. The low pprtion 62 provides for a release of pressure at the ball line again. The high portion 64; provides for a traverse of the roll along the inside of the shanl: to the breast and back again The low portion 66 provides for a release of pressure at the ball and the high portion 68 fora traverse from the ball down the forepart to the end of the operation at the toe. The high portion 68 is shorter than the high portion 52 because the inside of the forepart is considerably shorter than the outside,

dueto the diagonal position of the ball line.

description. A more detailed description of the mechan sm and of the operation thus far descrlbed will be found in the Letters Patenthereinbefore mentioned.

The above described cycle of operation is that used upon h1gh arched shoes, 1n particular, womens shoes. In leveling such shoes,

release of leveling pressure at the ball line is advisable to insure against breakage of the last as the roll passes over the ball line toward the breast, at which time it tends to fall down the steep shank with a severe blow; and conversely, to insure against damage to the shoe due to dragging on the dampened sole as the roll is crowded up over the ball line under pressure.

In the case of shoes having flatter bottoms, as in mens shoes, it is unnecessary and in many cases prejudicial to the best leveling to relieve the pressure as described above. Accordingly, to avoid undesired pressure relief, there is mounted integrally with the cam 46 on the sameshaft 48 ,a smaller cam 70 having, as shown, only one low portion 72, the. re mainder of its periphery being circular. This cam turns with the cam l6 and cooperates with a roll 7 l'on the end of an arm 7 6 pivoted at 78 to the lever 40. A manually operated gravity latchSO is pivoted to the lever 40. When this latch is in the position shown in Fig. 1. it is out of contact with the arm 76 and free relative pivotal movement between the arm 76 and the lever 40 is permitted. hen, however, the latch is thrown over to the position shown in Fig. 2, it contacts with the arm 76 as shown in Fig. 2 and thus limits upward movement of the arm 76 relatively to the lever 40. There being no low places in the cam 70' corresponding to the low places of the cam 46 except the depression 72 corre sponding to the depression 50, the arm 7 6, when the latch is in the Fig. 2 position, will hold up the lever 40 and prevent the roll 44. from falling into the other low portions of the cam L6 as they come around, thus maintaining pressure on the shoe during the whole opera tion, while when in the Fig. 1 position it is ineffective in this respect. The head 82 of the latch is heavy and holds the latch in either of its two positions as placed by the operator. The lever 40 and the arm 76 may be regarded as constituting together a compound lever arm.

Thus the machine can be used interchangeably to level shoes having high arched shanks in the case of which certain pressure relief is desired and also to level flat bottomed shoes in which such pressure reliefis unnecessary'or undesirable, without any loss of time on the part of the operator in inserting parts into the machine or in hunting for them if mischine comprises two alternative pressure mechanisms, at primary and a secondary mechanism, both mounted as permanent portions of the machine and comprising respectively the cams 46 and 7 0, the latter of which in hibits certain characteristics of the former. From another point of view it may be said that the lever 40- and its pressure applying connections are arranged to be governed by either of the cams 46 and at will. These cams obviously effect pressure cycles of essentially different characteristics, by the term cycle being meant herein the history or time-graph of the pressure during a leveling operation on a particular shoe.

Having described our invention, what we claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the class described, means for holding a shoe and a tool relatively movable to cause the tool to treat successive portions of a shoe progressively, a pressure mechanism for effecting a predetermined cycle of variable pressure between the shoe and the tool as they move relatively, and means operatively connected with said pressure mechanism and adjustableat the will of the operator to vary the quantitative relations between different parts of the pressure cycle according to the requirements of a given shoe.

2. In a shoe leveling machine, means for holding a shoe and a leveling tool relatively movable to cause the tool to treat successive portions of a shoe progressively, a pressure mechanism for efi'ecting a predetermined cycle of variable pressure between the shoe and the tool as they move relatively, and means operatively connected With said pressure mechanism and adjustable at the will of the operator to vary certain portions only of the pressure cycle according to the requirements of a given shoe.

3. In a shoe pressing machine, means for holding a shoeQa tool arranged to press the shoe, and a plurality of alternative pressure mechanisms permanently mounted in the machine for creating pressure between the tool and shoe, arranged for the substitution of one for the other at the will of the operator.

4. In a shoe pressing machine, means for holding a shoe, a tool arranged to operate progressively over the shoe to press it, a pressure mechanism having a pressure cycle of certain characteristics, and a mechanism for inhibiting certain of these characteristics as regards selected shoes. 7

5. In a shoe pressing machine, means for holding a shoe, a tool arranged to operate progressively over the shoe-to press it, a pressure mechanism having a pressure cycle of certain characteristics, and a mechanism for modifying certain only of these characteristics as regards selected shoes.

6. In a shoe pressing machine, means for holding a shoe, a tool arranged to operate progressively over the shoe to press it, a pressure mechanism for diminishing the pressure 'at predetermined points of the pressure cycle,

and a mechanism for modifying the diminution of pressure at certain of such points, while leaving unaltered those portions of the cycle other than such points.

7. In'a shoe pressing machine, means for holding a shoe, a tool arranged to operate progressively over the shoe to press it, :1 pressure mechanism for substantially relieving the pressure at predetermined points of the pressure cycle, and a mechanism for inhibiting the relief of pressure at certain of such points.

8. In a machine of the class described, means for holding a shoe and a tool relatively movable to cause the tool to treat successive portions of a shoe progressively, a pressure mechanism comprising a cam for diminishing the pressure between the shoe and the tool at predetermined points of the pressure cycle, and a second cam for inhibiting the action'of the first-n amed cam'at certain of such points.

9. In a shoe leveling machine, means for holding a shoe, a tool arranged to operate progressively over the shoe under pressure, a cam for effecting a predetermined cycle of pressure between the shoe and the tool during a pressing operation, a second cam for effecting a different predetermined cycle of pressure between the shoe and tool during a pressing operation, and means for placing either cam at will in operation on a particular shoe.

10. In a. shoe leveling machine, means for holding a shoe, a tool arranged to operate progressively over the shoe under pressure, a cam for effecting a predetermined cycle of pressure between the shoe and the tool during a pressing operation, a second cam for effecting a different predetermined cycle of pressure between the shoe and tool during a pressing operation, and a mechanism arranged to cooperate with either cam at Wi ll to cause that cam to control the on a particular shoe.

11. In a shoe leveling machine, means for holding a shoe, a tool arranged to operate progressively over the shoe under pressure, a cam for effecting a predetermined cycle of pressure between the shoe and the tool during a pressing operation, a second cam for effecting a different predetermined cycle of pressure between the shoeand tool-during a pressing operation, and a lever mechanismarranged to cooperate wit-h either cam at will to cause that cam to control the pressure cycle on .a particular shoe.

12-. In a shoe pressing machine, means for holding a shoe, a tool arranged to operate progressively over the shoe under pressure, a cam for effecting a predetermined cycle of pressure between the shoe and the tool during a pressing operation, a second cam for pressure cycle iefiecting -a .prede'termined pressure cycle which lacks: certainlot" the :pressure-nnmma of the first na'med cycle, and means for HlZlllZ i-ng either cam atwill in operation upon a operationol' the tool, andmeans adjustable at'theflwill {of the operator to modify the oipe .;tion of saidlast-named means at a plurality 01" such points without disturbing the remainder of the cycle. 1 7 V 14, in a machine oi the-class described, means. for holding ashoe and a. tool constructed and arranged for relative movement tocau-se the tool to treat successive portions of the shoe progressively under pressure, means operating automatically torelieve the pressure at predetermined points in the oper-. ation oi the tool,'and means adjustable at the will of the operator to prevent the operation of said lastsnamed means. I 15. In a shoe pressing machine, means for holding a shoe, atool arranged tooperate progressively over the shoe under pressure, a lever for imparting pressure to the tool and shoe, a cam for controlling the lever in accordance with a predetermined pressure cycle, a second cam for controlling the lever in accordance'with a diiferent predetermined pressure cycle, and means for causing either cam at will to control the lever. 16. In a machine of the classdescribed, means for holding a shoe and a tool relatively movahleto cause the tool to treat successive pressing machine, means for holding a shoe, a tool arranged to operate progressively over the shoe under pressure, a

lever for imparting pressure to the tool and shoe, a cam for controlling the lever in accordance with a predetermined pressure cycle, the camhaving depressions into which the lever falls to effect pressure-n'iinima, and a second cam operative at will to prevent the falling of the lever into certain of the depressions in operating on a particular shoe.

1,8. In a shoe pressing machine, means for holding a shoe, a tool arrangedto operate progressively over the shoe under pressure,

. a'lever for creating pressure betweenthetool and shoe havingna compound arm, and'two cams, one cooperating with each branch of theicompound lever arm,to produce differing cycles fpressure' between the shoe and the tool at will. v

19'. In a shoe pressing machine, means r'or holding a shoe, a tool arranged to operate pro gressively over the shoe under pressure, alever for 02 using pressure between the'tool and shoe,"a cam cooperating with the lever to produce a predetermined cycle of pressure between the tool and shoe, an. arm movably mounted on the lever, a second cam arranged tocooperatewith the 'arm to produce a difiercnt cycle olfpressure between thetool and shoe,-an.d means for opcratively lockingthe arm to the lever to renderthesecond cam eillectivef V 20. in a shoepressing machine, means for holding a sh0e,'a tool ar 'anged to operate progressively over the shoe under pressure, a lever for vcausing pressure between the tool and shoe, a cam cooperating with the lever to produce a predetermined cycle of pressure between the -tool and shoe, an arm movably mountedon the lover, a second cam arranged to cooperate with thearm 'to produce a different cycle, of pressurebetween the tool and shoe, and a stop on the lever operable to limit the movements of thear-mrelatively to the lever to rcnderthe second cam effective.

21. In a shoe, pressing machine, means for holding a shoe, a toolarranged :to operate progressively overtheshoe under pressure, a leverfi'or causing pressure between the tool and the shoe, a cam cooperating with the lever to produces predetermined pressure cycle, anarmpivoled to the lever, a second cam cooperating with said arm, and a stop which can. be positioned to preventrelative movement of the lever and the arm under the thrust oithe second cam, the second cam being shaped to lift the lever away from certain low portions of the firstgnamed cam when the stop is so positioned. 7 v V In, a. machineot.theclass described, means for'holdinga shoe and. a tool arranged for relative movement to cause: the tool to treat successive portions of the shoe progressively, a pressure mechanism for eii'ecting pressure between thetool and the shoe in apredetermined pressure cycle, means for altering said pressure cycle, and a member operativeat will to cause said last-named means to become effective for any selected cycle of operations of the machine. I i i V In a machine of the class described, means l'or holding a shoe anda tool arranged for relative movement to cause the tool to treat successive portions of the shoe progressively, and a pressure mechanism having alf pressure between the tool a'ndthe shoe in a sel cted one of a plurality of pressure cyc es of essentially differing characteristics at Will,

ativelyoperable members for effecting Lil 24. In a machine of the class described, means for holding a shoe, a tool arranged to operate progressively along the shoe, a pressure mechanism for effecting pressure be tween the tool and the shoe in a predetermined pressure cycle, and mechanism permanently mounted in the machine for altering a selected portion of the said cycle for operating on a particular shoe.

25. In a shoe pressing machine, means for holding a shoe, a tool arranged to operate progressively along the shoe, a pressure mechanism for effecting pressure between the tool and the shoe in a predetermined pressure cycle, and a mechanism comprising a memher having an operative and an inoperative position in the former of which it is arranged to alter a selected portion of the said cycle for operating on a particular shoe.

26. In a shoe leveling machine, means for holding a shoe, a tool arranged to operate n'ogressively along the shoe, a pressure mechanism for effecting pressure between the tool and the shoe in a predetermined cycle, and a mechanism comprising a pivoted member having an operative and an inoperative position inthe former of which it is arranged to alter the ,said cycle for operating on a particular shoe.

27. In a shoe leveling machine, means for holding a shoe, a tool arranged to operate progressively over the shoe under pressure, a lever for causing pressure between the tool and shoe, a cam cooperating with the lever to produce a predetermined cycle of pressure between the tool and shoe, an arm movably mounted on the lever, a second cam arranged to cooperate with the arm to produce a different cycleot' pressure between the tool and shoe, and a member pivoted on the lever and operable to limit the movements of the arm relatively to the lever. to render the second cam effective.

In testimony whereof we have signed our names to this specification.

ERASTUS E. WINKLEY. FRED V. HART.