US1032824A - End-lasting mechanism. - Google Patents

Description

O. E. GRUSH.

END LASTING MECHANISM. I APPLICATION FILED JULY 25, 1910.

1,032,824, Patented July 16, 1912.

tlNlT-ED Wi l-t.

PATENT @hihlttlldi- CHARLES E. GRUSH, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW' JEREEY, A CORPORATION OF NEW JERSEY.

END-LASTING MECHANISM.

Specification of Letters Patent.

Application filed July 25, 1910.

ltatented July ME, 191%.

Serial No- 5?3,637.

citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in End-Lasting Mechanisms; 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 end lasting mechanisms and particularly to apparatus adapted to be used with end embracing wipers to assist in stretching the upper over the toe portion of a last. Devices of this class are commonly called retarders and thepdevice in which the present invention is embodied will be so designated. such devices serving to retard the slipping of the Wipers over the upper as the wipers are actuated. I

In the manufacture of good shoes care is taken during the pulling-over operation to position the toe tip seam in desired longitudinal and angular-relation to the last and in this operation the upper is properly stretched lengthwise along the median line of the shoe and laid over the end of the toe and tacked. Between the end of the toe and the ball, or at the sides of the toe the upper remains to be stretched and formed to the last in the lasting operation. In this latter operation the toe end tack is usually removed after the shoe is in position in the machine and the upper spread out over the'wipers. With retarders as heretofore constructed and applied an adequate stretching of the upper at th sides of the toe has very generally been accompanied'by an excessive gripping and stretching of the upper at the end of the toe which frequently bowed or curved the tip seanr ,unless the precaution had been taken oftack ing the upper to the top face of the last at the tip seam as was sometimes done;

It isan object of this invention to provide a retarder Whichis mounted for manipulation to secure adequate stretching at the sides of'the toe andiavoidexeessive stretching at the end'ofthe toe and render superfluous. the tacking of the tip seam on the top of the last to prevent its being drawn out of position.

lVith this object in view a feature of this invention comprises a retarder which is mounted to permit the holding pressure at the end and sides of the toe to be varied relatively during the pulling or lasting op- QIHUOH."

A further feature of the invention consists in a retarderwhich is mounted for manipulation to clamp the upper against the wipers and for further manipulation to increase the clamping pressure upon the upper at the sides of the toe and relieve it at the end of the toe. This allows the wiperto slip over the upper at dillerent times and at ditierent portions of the toe with more or less ease according to the manipulation of the retarder, which is shown as operated by one hand of the Workman while he advances the wipers with the other hand.

An important feature of the invention is also disclosed in the illustrated embodiment thereof which comprises a lever connected yieldingly to a support and extending backwardly over the shoe with a handle on its rear end and acrescent-shaped clamping toot between the ends of the lever and adapted to serve as the fulcrum about which the lever is pressed down while the yielding connection springs. This permits the fulcrui'n point or place of maximum pressure applied by the foot to move longitudinally as tor example. toward the rear ends of the foot which bear upon the upper that extends up over the sides of the toe. By merely pressing harder down upon the handled end of the lever the operator can relieve the clamping pressure at the hd of the toe and increase it to any desired extent at the sides of the toe, the relative pressures at the end and sides of the toe being entirely under the control of .theoperator.

These and other features of this invention, includi 1g certain details of construction and combinations of parts will be more fully understood in connection with the following description of an apparatus embody tion; Fig. 2 is a similar view on a larger scale indicating by dotted'lines the manipulation of the're tarder for obtaining a hard The retarder comprises a carrier lever 10' having aslotted connection with a post 12 rising from the wiper carrier 4. The lever 10 isformed with a handle at its free end andhas a depending stem 12 upon which is secured the upper clamping foot 13 of the retarder. This foot is shown as of substantially crescent shape and to overlie the wiper plates" throughout substantially their length. The post 12 carries above the lever 10 a spring 15 which acts through a slide block 16 downwardly upon the end of the lever, the tension of the spring being regulated by a nut 18 on the screw threaded extension of the post. i

In the use of this invention the shoe is presented to the machine and the wipers are actuated to wipe the upper upwardly-about the side facesof the last and inwardly over the feather of the innersole in the manner contemplated in. the t pical patent to Grandy No; 521,954 and ymechanism sub stantially like that there described. Either immediately when the shoe is put into place in the machine or after the upper has been partially formed to the last-by the wipers the fringe or marginal portion of the upper is laid over upon the wipers and the retarder is swung laterally from an out of the way position into the position shown in full lines in Figs. 1 and 2. Preferably the nut 18 will be adjusted so that'the foot of the retarder may clamp the upper substantially flatly upon the wipers and then, after an initial stretching of the end as well as the sides of the toe to draw the upper snugly .up at the toe, the handle end of the lever is further depressed against the resistance of the spring 15 as shown in dotted lines in Fig. 2, the wipers being of course meanwhile raised. By the change in position efiected by depressing the handled end of the lever the clamping footis rocked'or; caused to fulcrum on its rear orheel ends. This increases the clamping force withwhich the upper at the sides oi'the toe'is-held and causes it to be stretchedor pulled up as much as the operator may desire or the particular shoe may require, while the "upper at the end of the toe is allowed to slip more freely tinder the advancing wipers and no distortion of the tip seam will be produced.- By rolling the lever slightly on its own axis, as the operator may do by the,

grasp of his hand, the clamping force at either side of the toe-may be increased rela-- tively to that at the'other side, as well as relatively to that at the toe, for pulling the upper as the conditionof the particulan; 7

shoe may show to be desirable. The-rear ends of the foot plate of the retarder advantageously be made slightly resilient,

as by a gradual reduction in thickness of suitable metal, so that an extended area of concentrated pressure at the sides of the toe is secured... The nut 18 may obviously be adjusted upwardly to cause only the resilient portions of, the foot at the sides of the toe to grip is desired.

Having explained thenature of this invention and described a preferred construction embodying the same I claim as new and the upper if side gripping only desire to secure by-Letters Patent of the I United States 1. An apparatus of the class having, in combination, end, wiper plates, and a retarder-for engaging an upper at described the end and opposite sides of the toe of a shoe, said coiiperating upper clamping members being arranged to permit, during the toe lasting operation effected-thereby, a relative movement to relieve the grip on the toe portion of the upper relatively to the grip with which the upper is held at the sides of the toe'and means by which said relative movement can be effected.

2. An apparatus of the class described having, in combination, end wiper plates,

means for actuating them -to wipe ,anupper over the end'and sides of the toe portion of I a last, and a retarder to grip the up'per sides, said retarder'being mounted for rocking movement about a horizontal axis by the operator as the lasting proceeds to regulate having, in combination, end wiper plates,

means for, actuating them to wipe an upper over the endand sides of the' toe portion of. 'a last, and a retarder which is formed to engage the upper on the wipers and is yieldingly fulcrumed in front of the shoe and against the wiper plates at the-end and has a handle projecting'rea'rwardly over the shoe by which it may be tilted during ii: operation of the wipers torvary the relative forces with which the upper is heldnnder v it at the end and the sides of the toe..

4. An apparatus of the class described I having, in combination, end wiper plates,

means for actuating them tdwipe an'upp e'r over the end and sides of the toe portion-oi a last andQa retander which is yieldi-ngly mounted in front of the shoe-to permit it to tip longitudinally of the'shoe and has a 1,oee,sae

handle by which maximum upper holding pressure can be transferred during such tipping movement to the rear portions of the retarder during the ovorwiping operation of the wiper plates.

5. An apparatus oi. the class described having, in comhii'iation, end wiper platen, means for actuating them to wipe'an upper over the end and sides ot the toe pun tion of a last, and a retarder provided with operating means by which, in response to increasedoperating pressure, the front portion of the retarder can be raised relativelyto the portion to cause the upper to be held with greater force at the sides than at the end of the toe.

6. An apparatus of the class described having, in combination, end wiper plates,

means for actuating them to wipe an upper over the end and sides of the toe portion of a last, a retarder toot, a hand lever by which the retarder foot is carried and which has a yielding support at one end and has its other end extended baclzwardly beyond the foot over the shoe in position to cause pressure thereon to increase the holding power oi the rear portion of the retarder toot relatively to that of the front portion, I

, 7. An end lasting mechanism having, in combination, end embracing wipers, means for actuating the Wipers and a retarder to clamp the upper against the wipers to cause the upper to be pulled, said rotarder being arranged to produce automatically, in re= spouse to progressively increasing pressure, an initial holding grip atthe end and sides of the toe and then a relatively increased grip at the sides of the toe.

S. An end lasting mechanism having, in combination, end embracing wipers, a support relatively to which the Wipers are movable, a lever yieldinglyconnected with said support. and having a. handle, a retarder mounted on the lever and arranged normally to press throughout its length the upper upon the wipers and to have the grip on the upper at the end of the toe relieved and that at the sides of the toe increased by pressure upon the handle. i

9. An end lasting mechanism having, in combination, end embracing wipers, a support for the wipersl and a hand lever yieldingly connected to said support, and a re tarder mounted on the lever and adapted to fulcrum about its rear ends as pressure upon the handle is increased. 10. A retarder {for bed lasting machines comprising a bar' extending lengthwise of 0 a shoe which occupies position to be lasted in the machineand pivotally supported in front of the shoe and having a handle on iitgs rear end, said bar having a depending 'foot adapted to be held in clamping engagement with the marginal portion ofthe upper upon the l. stin cssurc applied to the handle transversely or the length of the handle, and being secured at its trout end in advance oi ...e .shoe to. allow said end to yield upwardly in response to pressure upon the handle.

fin flpplliliilh oi the class described havii'ig, in m'unbination, a rctartlcr, yieldingly mounted lever extending horizontally over the shoe and upon which the retardcr is carried and which is arranged for manipulatioi'i to change the area of a maximum pressure applied by the retarder from one point to another.

12. An apparatus of the class descrilmd, having, in (mmbination, a retarder, and a yieldingly supported lever extending horizontally over the shpe and upon which the retarder arranged to rest upon the upper at the end and sides of the toe andwhich is adapted for operation to increase the holding pressure onthe upper at the. sides of the toe and to decrease the-pm ire at the end of? the toe,

13. An apparatus of the class described having, in combination, end embracing wipers, a retarder and operating mechanism constructed and arranged for nianipulation to draw the upper more tightly across the toe and simultaneously reduce the pull lengthwise of the shoe.

14. An apparatus of the class described having, in combination, end embracing wipers, a retarderand operating mechanism constructed and arranged to tip the retarder upwardly upon its rear ends, the rear end portions of said retarder being resilient as and for the purpose described.

15, An apparatus of the class described having, in combination, end embracing wipers and a retarder comprising a plate formed to clamp the upper on the wipers at the end and opposite sides of the toe and having resilient rear end portions.

16. A retarder adapted for use with end embracing wipers and having a substantially non-resilient body portion to bear upon the upper at theend oi the toe and means for operating them, and retarder con'iprising a manually operable lever to whlch' is attached a crescent-shaped foot having its horns extending toward the rear and a of the shoe and. awav from the piv0t 0f the lever whereby pressure a}; lied to the lever acts to retard slipping 0 the ,upper more at the sides than a t' the end of the tee, 5 said lever having, a yielding connection w th its fulcrum whereby the lever may at a wrertain pressure fulcrum about'the pivot and may at an increased pressure fulcrum about the horns Of the foot.

19. An end lasting machine having, in combination, toe embracing Wipers and means for operating them, and a retarder comprising a manually operable lever to which is attached a crescent-shaped foot .heving its horns extending tnvvarei the rear of the shoe anrl away from she fuleriini of the lever whereby pressure is the.

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