US700332A

US700332A - Pulling-over machine.

Info

Publication number: US700332A
Application number: US4497301A
Authority: US
Inventors: James E Jackson
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1901-01-28
Filing date: 1901-01-28
Publication date: 1902-05-20
Anticipated expiration: 1919-05-20

Description

(No Modal.)

. Patented May 20, |902. .L E. JACKSON. PuLLme ovEnnAcHmE.

(Application led Jan. 28, 1901.)

' UNlTED `rSie,TES-,l

JAMES JACKSON, 'or LYNN, MAssnoHUsE'rfTs, AsslG'NloRpY MEsNE AssieNi/iENTs, To UNITED sHoE MAoEi-NEErooMPANY, on rATERsoN, NEW JERSEY, AND BosroN,MASSACHUSETTS;A'coRPoEATioN or NEW JERSEY.

PuLLlc-OVER MACHINE,

'y s PEoIrcArroN forming part of Letters Patent No. 700,332, dated May 2o, 1902.

I Application ld January 28, 1901. Serial No. 44,9'73i (No model.)

jb all wtntj tftmay concern: I Be it known'thatLfJAMEsE. JACKSON, of

I Lynn, in the county of Essexand State of Massachusetts,have invented certain new and useful Improvements inv Pulling-Over Machines, offwhich the following isf a specification.

This invention has relationto pulling-over machines oimachines for, stretching the upperv or" a boot or shoe preparatory to its being lasted or finally securedto the insole. y,

The object of the'inventionisto provide a machine which isautomatic in its'operaticn and yet which'is under suchlmanual control that the stretching'of the upper may be govf Ybe depressed bythe operator to release the ernedbytheoperator. Upper-leathervaries greatly both as to thickness and elasticity, and a single upper,`

according to the portion of the skin -from which it is cut, will frequently be much more' elastic on one side thanon the other. It frequently differs on itstWo sides in point of thickness or strength regardless of litsresilien'cy' or elasticity. Hence it is practically impossible, 'so far as I 'am aware, to provide amachine by which the upper is graspedjon both sidesandthe two sides are pulled simultaneouslyto the same extent without the liability of oneside beinglstretchedmorethan the other, SofthatA the upper'vwillnotfoccupy its proper position. `In hand-lasting this difiicultyis avoided, `for the operator pulls over the upperto the extent'that hisexperiencehas taught him is sufficient, care being takenA by him to see that the upper is properly placed upon the last. In carryingoutmy invention I not only provide a machine by` which the upper is grasped and is drawn in any desired direction with relation to the median line of the last, but I provide for the pulling being varied by the operator, accord` ing tothe condition of the stock. Referring to ,the 'accompanying drawings,

which illustrate a machine embodying my inj` vention, 'Figure l represents a side elevation of the machine. Fig. 2 represents an end elevation of the same. Fig. 3 represents a section from front to rear through the driver for securing the fasteners in the upper.

The-machine is provided with a head d,

momentum-wheel c2. f Between the pulley andthe'shaft th'ere1is fa suitable clutch device, which is indicated conventionally at dx, said device having the stop motion by which the shaft c is stopped at a certain point in its rotation. Such devicesare Well known, and it'has not seemed necessary to illustrate one in detail.l

Theoperationbf the clutch and stopdevices is governed bythe levers d d on the rock-shaft d2, the lever CZ being connected by a link d3 with' a treadle located in position to stop devices and permit the clutching ofthe Vpulley c'to the shaft., When the treadle is f raised, vthe levend is thrown into position to unclutch the pulley c andto stop the shaft c` at the proper point in its rotation...

'"The head is laterallyextended and is provided with a gripper consisting of a fixed jaw c and a movable jaw e', either v or both of which may be corrugated or toothed to secure itv tightly upon the edge of the upper. |The movable jaw is on the end of a lever e2, fulcrumed Vupon a stud e3 in a bracket f, attached'to'the side of the head. The upper end of the lever e2 is equipped Witharoller e4, bearing against a cani c5 on the shaft c.

'lhe only function that is performedgby the gripperis to gripr the edge of the upper,.the said movable jaw `e being operated intermittently-by the cam'e5, bearing against the roller c4, said' jaw being moved toward and -fromoperative position onceforfjeach rotation of the shaftc.

'IheloWerface e6 of the stationaryjaweis flat, as jat; c","and constitutes a stationary wipefrgand'also a guide for vtheshoe, against whichjgthe latterfmay be pressedbythejoperator.

In order'to cause the stretching or pulling of the upper over the last after its edge has been grasped between the jaws e e', I provide a reciprocating abutment g. This abutment is mounted in guides in the bracket f, and it is heldnormally raised by a spring g', pressing against the collar g2. Upon the upper end of the movable fulcrum or abutment g there is a roller gi, which bears against the periphery of a cam g4 on the shaft c. The cams e5 and gL are so formed and arranged relatively to each other that the jaws are operated to grip the upper immediately prior to the depression of the abutment g, the effect of this being to cause the gripping of the upper and the depression of the last, whereby the upper is drawn along a line from the vertical plane of the end of the abutment to the ends of the jaws e e. The last during the operation of the machine is held in the hands of the operator, with the insole uppermost and bearing against the abutment g. The edge of the upper is placed between the jaws e e', and when the latter has gripped it and the abutment g is depressed the last and the upper thereon are moved downwardly about the hands of the operator, the latter serving as a fulcrum. In other words, the operator holds the last firmly, and the abutment forces it downwardly, with the result that the upper is stretched over the last. The operator may vary the tension of the stretched upper by swinging the last about the abutment to move the inner part thereof toward or from the wiper e. At the same time he moves the last so as to draw the upper over the bottom of the last, sliding the last relatively to the stationary wiper c6. A guide 7L is pivoted to the stationary jaw to limit the sliding movement of the last. The guide, however, can be swung out of the way above the plane of the wiper-face e in pulling over and fastening the upper at the shank by means of a tip-lever 7L', operated by 4a treadle (not shown) connected thereto by a link h2. The tip-lever is connected to the guide h by links h3 71.4. After the upper has been wiped over the bottom of the lasta fastener is driven into it to secure it in place. The fasteners are fed from a reservoir (indicated more or less conventionally at i) through a chute i', and they are delivered to the throatway formed in the stationary jaw e. A drivel-j, which is adapted to operate through the said throat, is secured to a driver-bar j', adapted to reciprocate in guides in the head. The upper end of the driver-bar is slotted, as at j2, to receive the shaft c, said driver being raised by a cam and drawn downward to operative position by springs P7'3 js, as shown in Fig. 3, said springs being attached to studs ji on the head and studs on the driver-bar. The cam for operating the last-mentioned element is indicated at It, and it is formed with a wedge-shaped cam c, which intermittently engages a roll j on the driver-bar. The cam raises the bar to its highest limit of movement and then permits it to be drawn quickly by the springs js to cause the drivers j to engagea fastener at the lower end of the chute, driveit through the throat i2, and force it into the work. The cam 7c is timed so that the driver-bar descends immediately prior to the release of the upper from the jaws e e.

With this construction and arrangement it will be observed that the upper can be pulled over the last according to the judgment of the operator just as in the pulling over of uppers by hand. If the upper is particularly weak at any point, the operator can vary the downward thrust of the last by swinging the outer part of the last downward as the movable abntments descend to prevent it from being stretched too much, or he mayincrease the tension of the upper by swinging the last about the movable abutment, as will be readily understood.

lVith this machine I first pull over the upper at the toe and then along the sides at as many points as may be desirable. It is not essential that the movable parts should be arranged to operate downwardly, for the head and the parts carried thereby can be turned upside down and operated so that the operator can see the top of the last rather than the bottom.

Having thus explained the nature of the invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made or all ofthe modes of its use, I declare that what I claim isl. A pulling-over machine having a gripper one jaw of which is xed,and an automaticallyoperated member for forcing the last away from the gripper to stretch the upper, said automatically-operated memberbeing located at a distance from the gripper to permit the last to be rocked on said member by the 0perator to manually control the amount of stretch.

2. Apulling-over machinehaving a gripper one jaw of which is fixed, an automaticallyoperated member for forcing the last away from the gripper to stretch the upper, and means for automatically operating the movable jaw of the gripper, the said automatically-operated member being located at a distance from the gripper to permit the last to be rocked on said member by the operator to manually control the amount of stretch.

3. A pulling-over machine having a gripper' for the edge of the upper, one jaw of the gripper being iixed, an abutment against which the bottom of the last is held by the operator, and means for reciprocating the abutment, the said abutment being located at a distance from the gripper to permit the last to be rocked thereon by the operator to manually control the amount of stretch.

4. A pulling-over machine having a gripper for the edge of the upper, an abutment against which the bottom of the last is held by the operator, and relatively to which the last may be moved to lay the edge of the upper over the insole, and means for moving Vthe abutment to force the last away from the gripper, the said abutment being located at a distance from the gripper to permit the last to be rocked by the operator to manually control the amount of stretch.

5. A pulling-over machine comprising an Ioo 7. Apulling-over machine comprising` up-` per-stretching.mechanism and a stationary Wiper, mechanism for fastening the upper to the insole, and a gagefpivoted `to said Wiper and bodily movable into inoperative position above the plane of said Wiperto permit the fastening mechanism to operate on the shank. of thepartially-.formed shoe.

In testimony whereof I have affixed my signature in presence of two Witnesses.

JAMES E. JACKSON.

Vitnesses: v

M. BMAY, A. D; HARRISON.