US2445420A - Machine for applying pressure to shoe bottoms - Google Patents

Description

July 20, 1948. GIH. COLLINS MACHINE FOR APPLYING PRESSURE TO SHOEBOTTOMS Filed May 25, 1946 2 Sheets-Sheet 1 [r1 veman Eeorgefl Collins July 20, 1948. a. H. coLuNS MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS 2 Sheets-Sheet 2 Filed May 25:, 1946 [n vemor' Dearge H Collg'ns Patented July 20,1948

MACHINE LFQR APPLYING *PRES SURE TO :SHQE BOTTOMS George H. Collins, Lynn, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. 3., a corporation of New Jersey Application May'23, 1946, Serial No.'671,8.07

7 Claims 1 This invention relates to machines .ior applying pressure to shoe bottoms and more particularly to means for supporting the heel end of .a last during an operation on .a shoe carried thereby. The invention is illustrated herein as embodiedin a machine of the type described in Letters Patent of the United States No. 1,549,243., granted August 11 1925, on an .application of E. E. Winkley, having a sole-pressing member or pad arranged to apply pressure to the bottom of a shoe on a last .and a jack for supporting the shoe against the pressure of the oad. It is to .be understood, however, that the invention is not limited to shoe supports for use in machines of that Particular character.

.An object of the invention is to provide an improvedheel abutment suitable for use with either high .orlow shoes. 'I!o this end and in accordance with a feature of the invention, the heel abutment .is pivoted on the head of the machine for movement into and out of register with the heel end of the pad, there being means acting to urge the abutment out of register with the heel end of the pad, and means for locking the abutment in .a position over the heel end of the pad when it is moved into this position by the operator. The heel abutment .includes an extensible supporting member which, during the pressure-applyingoperation, is contracted, there being means operatiye during this contraction of the supporting member for releasing a latch by which the abutment is held in position over the .heel .end .of the pad .so that at the conclusion of the pressureapplying operation thehee'l abutment is urged out of said position. An additional latch is provided which maintains the heel abutment in its contracted condition so that it may swing .iree of the top of the shoeat the conclusion of the pressure-applying operation, the latch being ineffective to maintain the supporting member in its contracted position after the abutment has been thus moved.

In accordance with a further .feature of the invention the heel abutment includes a plate ongageable with the top or the heel portion of the last, this plate carrying a member which depends therebelow for-engagement with the forward wall of the heel portion of the last. The ,heel abutment is swingable lengthwise of the pad and in its loading position is positioned rcarwardlylof the "heel end of the pad, the arrangement being such that when a last is presented thereto and'is then, moved forwardly over the pad, engagement .of .the last with the member depending from the aforementioned plate causes the heel abutment to be 'swungfinto its operativeposition. By moving the last upwardly causing partial contraction of the supporting means forthe heel abutment, the shoe isreadilypos'itioned over the pad and then is lowered thereon; 'In operat'ing on high shoes it is important that there be no interference between the upwardly ,pro- .iecting portion of the upper and the last-engaging plate of the heel abutment. Accordingly, .in accordance with a further feature of. theinventlon, the member carried by the last-engaging plate flares upwardly .and outwardly thereby to spread the upper outwardly when the lastedshoe is pre sented to the plate.

The above and other features of the invention including various details of construction and novel combinations of parts will now be more particularly described by reference to the accompanying drawings and pointed out in the claims.

In the drawings,

.Fig. 1 is a front elevation of the head of a machine of the type shown and described in the above-mentioned patent with the present invention applied thereto;

.Fig. 2 is a front elevation of the heel abutment of Fig. 1 on a somewhat larger scale showing its position at the conclusion of an operation :on a shoe;

.Fig. .3 iszanend elevation of the heel abutment;

Fig. 41s an .end elevation of the toe and cone upport, and

vFig. 5 is .a front elevation of the heel abutmentsupporting means illustrating the positions of the parts when pressure is being applied to the work.

The present invention is illustrated as embodied 'in a'sole-pressing machine .of the type shown in the v above-mentioned Winkley patent to which reference .canbehadior a more detailed description of the construction, arrangement, and operation ofparts not fully described herein. machine is provided with a pair of upwardly extending rods III which guide a pad box I22 for vertical sliding movement. Carried by the pad box [.2 is a resilient sole-pressing pad .14 shaped to conform substantially to the .curvatureroi thebottom of ashoe being operated upon. Aitera shoe has been placed on the, pad .14 the pad box is moved upwardly carrying the shoe into engage ment with :a toe and cone support It mounted on ahead 18 secured to the upper ends of the rods ill. The toe and .cone support 4.6 includes awe-en aging r0112]! and Ya roll 22 engageable with that ,portion of the shoe overlying the cone of the last. The rolls 20 and 22 are journaled on shafts '24 carried between parallel arms 255 which are in turn-secured to a shaft-2B iournaled in spaced depending arms "30 of a post -32. The arrangement of .the Irolls 12D and 22 is. such that as the pad box L2 is moved upwardly to apply pressure to the shoebottom-the pressures exerted by therolls 20 :and 22 .are equalized and undue pressure is not concentrated on any one portion of the last. Injorder to maintain the rails 29. and 22 in approximately the proper relative positions a plunger 34 is arranged for sliding movement in the lower portion of the post 32 and is urged against the shaft 28 by a spring 36 thereby providing sufiicient friction to hold the arms 26 against swinging movement when the rolls 20 and '22 are not in engagement with a shoe on the pad box.

For supporting the heel end of the shoe against the upwardly directed pressure of the pad box during the sole-pressing operation a heel abutment 4!] is provided. This heel abutment comprises a post 42 telescopically received in a sleeve 44 pivoted for swinging movement lengthwise of the pad box on a pin 46 carried by asupport 48 mounted for adjustment lengthwise of the head l8. Pivoted to the lower end of the post 42 is a plate 56 arranged for engagement with the heel end of the'last. The post 42 carries a, pin 52 which projects outwardly through a slot 54 in the sleeve 44 and by its engagement with the sleeve at the opposite ends of the slot limits the movement of the post 42 lengthwise of the sleeve 44. 1 At the conclusion of a sole-pressing operation the heel abutment assumes the position shown in Fig, 2 into which position it is swung rearwardly of the heel end of the pad from the position shown in Fig. 1 by a torsion spring 56 carried by a pin 58 in the support 48. One end of the spring 56 bears against the sleeve 44 and the other end bears against a pin 60 in the support 48 but projects upwardly and rearwardly from the pin for a purpose which will appear hereinafter. The extent of rearward movement of the heel support-is limited by engagement of a lateral projection 62 of the sleeve 44 with an adjacent portion of the support 48. The post 42 rests by gravity in its lowermost position with the pin 52 in engagement with the sleeve 44 at the lower end of the slot 54.

Carried by the heel-engaging plate 50 is a lastengaging member 64 which may be formed of heavy gage wire bent into the' form shown in Figs. 2 and 3, wherein it will be noted that it extends downwardly below the plate 50 and flares outwardly and upwardly. When a shoeis to be placed on the pad box the heel end of the last is held by the operator against the plate 50 with the member 64 in engagement with the front wall of the heel end portion of the last and if a high shoe is to be operated upon the upper portion of the member 64 will spread the upper of the shoe away from the last sufiiciently to prevent any possibility of the upper being pinched between the top of the last and the last-engaging plate. The operator will exert an upward force through the shoe onthe plate 50 thereby moving the post 42 upward sufficiently to permit the shoe to clear the top of the pad box when the shoe is swung into position over the pad box. By the engagement of the member 64 with the last the heel support will be swung with the shoe until it is in a vertical position as illustrated in Fig. 1. When in this position a pin 66 carried by the sleeve 44 inoves into locking engagement with a latch 68 pivoted on the pin 58 and urged into locking position by a spring acting between the left end of the latch and a pin 12 carried by the support 48-. The operator may now lower the shoe into engagementwith the pad box without the possibility of the heel support being forced into its inclined position by the spring 56. V

Upon upward movement of the pad box to apply pressure to the bottom of the shoe the post42 moves upwardly within the sleeve 44 until the pin 52 reaches the upper end of the slot 54. At this time the rolls and 22 are in engagement 4 with the toe and instep portions of the shoe and upon further upward movement of the pad box pressure is applied through the'grolls 26, 22 and the plate 55 to the bottom of the shoe. The movement of the post 42 into its uppermost position as shown in Fig. 5 causes the latch 68 to be moved upwardly by engagement of the pin 52 therewith so that the latch 68 no longer holds the heel support in its vertical position. It will be thus held,

however, by the pressure exerted thereon until the pressure is relieved by downward movement of the pad box. Journaled on the pin 46 is a latch 14 the purpose of which is to sustain the post 42 in its uppermost position upon downward movement of the pad box and until the heel abutment has returned to its inclined position. This permits the heel abutment to swing into loading position as shown in Fig. 2 without interference with the upwardly projecting upper of a high shoe. Moreover, were the post 42 not so held the latch 68 might move back into locking en'- gagement with the pin 66 before theheel support started its rearward swinging movement and it would thus be held locked in vertical position. The latch 14 engages the under portion of the pin 52 when the post 42 is moved into its uppermost position, the latch carrying a tail 15 Which is acted upon by the upper portion of the spring 56 tending to move it in a counterclockwise direction into the position shown in Figs. 1, 2 and 5 with the tail resting against the pin 60. It will be apparent that the latch is cammed out of the way during upward movement of the'post 42 until the pin reaches its uppermost position whereupon the spring 56 returns the latch 14 into lOcking position.- As soon, however, as the heel abutment swings toward the position shown in Fig.v 2 far enough to carry the pin 66 under the right end of thelatch 66, the pin 52 moves out of engagement with the latch 14 whereupon the post 42 moves downwardly by gravity until the pin 52 engages the sleeve 44 at the lower end of the slot 54.

In using the apparatus the operator presents a lasted shoe to the holddown which is in the position shown in Fig. 2, bringing the top of the heel end of the last into engagement with the plate 50.. With the member 64 in engagement with the forward wall of the heel end of the last the shoe is swung lengthwise ofthe pad box carrying with it the holddown until the parts are in the position shown in Fig. 1. During this movement upward pressure is exerted to move the post 42 upwardly so that the shoe will clear the top of the pad box. With the abutment in vertical position it is latched against rearward movement by engagement of the pin 66 with the latch 68 and the shoe is lowered onto the pad I4. The pad box is now moved upwardly by mechanism such as that shown in the Winkley patent until the toe end and instep portions of the shoe engage the rolls 26,

and 22 respectively. During this movement the post 42 of the heel abutment moves upwardly until the pin 52 reaches the upper end of the slot 54 in the sleeve '44 camming the latch 14 out of the way. When the pin 52 reaches the upper end of the slot the spring 56 moves the latch 14 into locking engagement with the pin 52 as shown in Fig. 5 at which time the pin 52 acts by engagement with the latchBBto move it out of engagement with the pin 66. At this time the heel abutment remains in its vertical position despite release of the latch 58 because of the pressure exerted thereon as well asby reason of the engagement'of the member 64 with the last.

At the conclusion of the pressure-applying operation the pad box moves downwardly carrying the last away from the plate 50 which is maintained in its elevated position by the engagement of latch 14 with the pin 52. The spring 56 now swings the heel abutment into the position shown in Fig. 2. As the heel abutment is thus swung, the plate 50 is maintained in its elevated position so that it will clear the top of the shoe. By thus maintaining the post 42 in its uppermost position the latch 68 is held out of engagement with the pin 66 until it underlies the tail portion of the latch after which the pin 52 moves out of engagement with the latch 14 and the post 42 slides downwardly under the influence of gravity, the parts finally assuming the positions shown in Fig. 2.

From the above it will be seen that the heel abutment may be employed with either high or low shoes and by reason of its mounting, facilitates loading the work in the machine. When employed with high shoes the member 64 holds the upper away from the plate 50 to eliminate danger of the upper being pinched between the last and the plate. The member 64 also facilitates positioning of the last relatively to the plate 50 and obviates the necessity of employing a last pm.

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 pressure to shoe bottoms, a pad for supporting a sole against which a shoe is to be pressed, a member for pressing a shoe against the sole supported on said pad, a heel abutment pivotally carried by said member for movements into and out of register with the heel end of said pad, means for locking said heel abutment in a position in which it is located directly over said pad, a spring acting on said abutment to move it out of said position, and means operative in response to the application of pressure through said heel abutment on a shoe supported on said pad for releasing said locking means.

2. In a machine for applying pressure to shoe bottoms, a pad for supporting a sole against which a shoe is to be pressed, a member for pressing a shoe against the sole supported on said pad, a heel abutment pivotally carried by said member for movements into and out of register with the heel end of said pad, means urging said abutment into a position out of register with the heel end of said pad, means for locking said abutment in a position over the heel end of the pad in response to movement of the abutment into said position, and means for releasing said locking means.

3. In a machine for applying pressure to shoe bottoms, a pad for supporting a sole against which a shoe is to be pressed, a member for pressing a shoe against the sole supported on said pad, a heel abutment carried by said member, said heel abutment including a plate engageable with the top of the heel end of the last, and a member carried by said plate extending below it for engagement with the forward wall of the heel portion of the last and having upwardly diverging portions arranged to spread the upwardly projecting portion of the upper outwardly of the last.

4. In a machine for applying pressure to shoe bottoms, a pad for supporting a sole against which a shoe is to be pressed, a member for pressing a shoe against the sole supported on said pad, a heel abutment pivotally carried by said memher for movements lengthwise of said pad, means urging said abutment into a position out of register with the heel end of said pad, said heel abutment including a support movable vertically of said pad, a plate carried by said support engageable with the top of the heel end of the last, and a member carried by and depending below said plate arranged for engagement by the forward wall of the heel portion of the last enabling conjoint movement of the abutment and a lasted shoe when the shoe is positioned by the operator on said pad.

5. In a machine for applying pressure to shoe bottoms, a pad for supporting a sole against which a shoe is to be pressed, a member for pressing a shoe against the sole supported on said pad, a heel abutment pivotally carried by said member for movements lengthwise of said pad, means urging said abutment into a position out of register with the heel end of sai pad. said heel abutment including a support movable vertically of said pad, a plate carried by said support engageable with the top of the heel end of the last, and a member carried by and depending below said plate arranged for engagement by the forward wall of the heel portion of the last enabling conjoint movement of the abutment and a lasted shoe when the shoe is positioned by the operator on said pad, said member flaring upwardly and outwardly for spreading the upwardly projecting portion of the upper outwardly of the last.

6. In a machine for applying pressure to shoe bottoms, a pad for supporting a sole against which a shoe is to be pressed, a member for pressing a shoe against the sole supported on said pad, an extensible heel abutment pivotally carried by said member for movements lengthwise of said pad, means urging said abutment into a position out of register with the heel end of the pad, a latch for locking said abutment in a position over the heel end of the pad when it is moved by the operator into said position, and means operative in response to the contraction of said heel abutment upon application of pressure therethrough for releasing said latch.

7. In a machine for applying pressure to shoe bottoms, a pad for supporting a sole against which a shoe is to be pressed, a member for pressing a shoe against the sole supported on said pad, an extensible heel abutment pivotally carried by said member for movements lengthwise of said pad, means urging said abutment into a position out of register with the heel end of the pad, a latch for locking said abutment in a position over the heel end of the pad when it is moved by the operator into said position, means operative in response to the contraction of said heel abutment upon application or pressure therethrough for releasing said latch, and means for locking said abutment in contracted condition until said abutment is moved out of register with the pad upon release of pressure through the abutment on the work.

GEORGE E. COLLINS.

REFERENCES CITED The following references are of record in the file of this patent:

' UNITED STATES PATENTS Number Name Date 2,111,606 Better Mar. 22, 1938 2,244,545 Smith June 3, 1941

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