USRE8487E - Improvement in lasting-machines - Google Patents

Description

H..G. THOMPSON. Assignor to H. G. Tnonrsou, as' Truste of the MAGNETIC LAS'II'ING MACHINE ASSOCIATION.

Lasting M.ao'hine.:

Reissu'ed Nov. 12,1878.

and lock such pivot UNITED STATES PATENT OFFICE.

(l. TIIOMPSLIN, AS TRUSTEE OF THE MAGNETIC LA A SSOCIAT ION.

IMPROVEMENT IN LAS TING-MACHINES.

Spevilieat ion forming part of Letters Patent No. 203,673, dated May 14, 1878; Reissue No. 8,487, dated November 12, 1878; application filed November 1, 1878.

To all u'lmm 1' t may concern.- I

Be it known that I, HENRY G. THOMPSON, oi lllilt'ord, in the county of New Haven and State of Connecticut, have invented an Improved Lasting-Machine, of which the following is a specification This invention has rcfercnceto mechanism --for lasting shoes and boots, and is an improvementon themechanism shown in United States lalcnts Nos. 193,446 and 193,445.

In this present invention, as in such patcuts, the nails or tacks are orwill preferably be driven by means of the well-known magnetic tackerl a In Patent No. 193,446 the erimpingjaws or pullers are shown as held down upon the matcrial, both when being moved forward and when the tacks are being driven, by means of a curved leaf-s 'n-ing. \Vith such a spring the edges of the upper will sometimes slip when the tacks are bcingdriven, and the spring has to be adjusted for diiiercnt-sizcd shoes.

To overcome the objections incident to the use of crimpingjaws or'pullers and spring referred to, and insure that. the jaws hold the upper firmly when the tacks are being driven, and to place the amount of strain to be put upon the upper (that being according to the ,matcrial) completely under the control of the operator, and to adapt the inclination of the jaw-supporting plate, and consequently the under surface of the jaws or slides, to the inclination or curve of the last-bottom at its toe or heel, I have mounted the j aw-carryin g plate upon a pivot, and added to thcmachine aplateadjusting device, (shown as a screw,) so as to turn the plate about its pivot and adjust it and the jaws to the said curve of the last-bottom, and then hold it in adjusted position. This jmwearryin g plateis shown pivoted upon a vertically-adjustable slide, with which I have combined an luljusting-levcr and locking device, to raise or lower the pivot of the jaws in the desired position.

To last the sides and shank of the shoe, I have provided a series of fingers to move substantially horizontally over the last-bottom,

and a series of shank-springs to bear upon the upper at the sides of the last, one pat-r of such springs resting on the upper opposite and outside of the corner of the heel-stiffener, thereby crowding it well and snugly into the curve of shank. These side and shank lasting devices are made both vertically and longitudinally adjustable, to adapt them to difl'erent-sized shoes.

Figure 1 represents, in side elevation, a sufficient portion of a lasting-head to illustrate my invention; Fig. 2, an end view thereof, viewing it from the right of Fig.1; Fig. 3, adetail, showing the devices for holding the jaws upon their axes or fnlcra. Fig. 4 shows a top and side elevation of one of the side-lasting fingers; and Fig. 5 shows, in top view and side elevation, one of the springsteel crimpingjaws or pullers detached.

In the drawings I have shown but half of the lasting-head, the end containing the heellasting jaws bcin g omitted, as the jaws at each end of the head are alike. The socket a is to fit the jack-spimlle, and thcjaws c are to oper ate as'iu Patent No. 193,446. The crimping jaws or pullers c, adapted to force the edge pt the upper over upon an inner sole laid upon a last, have holes a 0 made through them back from their working-edges, or edges which come in contact with the upper to turn it over upon the last. These holes are elongated, and made suflioieutlylarge to permit the use of the magnetic tackcr or the driver to enter them and drive the tacks below the jaws.

The jaw-supporting plate b is pivoted, at or nearits forward end, upon the pivot ll, the latter being shown located at the upper end of the verticallyadjustable platecarrying slide 1, fitted to the post f so as to be raised, lowered, and guided thereon. The postf rises from a carriage, e, fitted to slide in gnideways 'g in the head by a screw, 1', provided with a thumb-nut, j, this adjustment adapting the jaws to shoes of ditt'erent lengths.

The screws m, operating upou the rear end of the plate b, place the under sides of the crimping jaws or pullers c at the proper inclination with reference to the too or heel of the last,according to its curvature. I The plate- ,carrying slide l is provided with sermv-threads to receive a sore". held in a sleeve, 0, pro- STING MACHINE u this lever.

1 vided with athumb-nut, p, by which the supporting-plate b and jaws may be quickly ad-. justed in height to place the jaws on the proper level with relation to the bottom of the l a'st.

The slide-adjusting lever q--a crooked lever pivoted at r to a hanger, s, of the carriage 0- has its short arm 2connectcd by a small link,

3, with the slide at 4 so as to move it and the jaws vertically, to lift them above or force them down upon the. shoe being lasted with more or less force. The handle or long end of this lever q'is provided with part of the locking device. This locking device, in this inframe t, made movable laterallyon the guideway g of the head h, a set screw, u, fastening the same. The vertical portion of the frame it is provided with a guiding-edger, to which is fitted the fin ger-carryiu g slide w, having cars 10, to which are pivoted the arms 11, provided at top with fingers 12, adapted" to be passed from the outside of the-last horizontally, or nearly so, across the edge of the last, toward the central line of the last-bottom.' These fingers are preferably made of spring steel, and are preferapy so held as to be ad justed' up and down and laterally with reference to the arms and last, and also so as to be turned axially to adapt them to thecurves of the last. I desire it to be understood that I do not claim such adjustment of these fingers. .One arm, 11, has pivoted to it one end of a link, 13, and the opposite end of such link is connected with the short end of a hand-lever, -14, pivoted at 15. The arms are operated to move. the finge s over the last by means of When the handle of this lever is in its lowermost position the arms 11 are held locked, and the fingers are over the last. The

ing springs 16 17, to meet the side ofthe upper, press it firmly against the side of the last, and place the upper in proper condition to be crowded over by the fingers, when, as the arms are closed," the fingers subsequently crowd the edge of the upper over onto the inner sole at the sides and shank of the shoe. The pair of springs 17 bear upon the upper at such a point as to also crowd the inner corners of the heelstifl'ening held between the upper and lining into thecur'ved portion of the shank, so that such stiflbningis also correctly drawn in and lasted, and will not project out and form a shoulder at the shank.

This finger-carrying slide 'wis made vertically adjustable, to accommodate the fingers to the level of the shoe by means of a screw, 18,- held in a lug, 19, the screw fitting a nut, 20, on the slide, while for the length of the shoe the adjustment-is made by the screw u.

The perforated crimping-jaws have their fulcra on a stud, 21, undercut at its edges, as in Fig. 2,- to receive thev portion 22 of a holding-plate, 23, also provided with a sprin g-piu, '24, (see Fig. 3,) to enter a slot'iu fthe top of the stud 2i.

The holding-plate takes the placeof a nut, and when removed, as may easily be done,

permits the removal of the jaws from the stud 21.. Such jaws, in this instance, are made entirely of springsteel. V

Operation The l pper is first placed over the last, and held y, means of one or more tacks at the toe, heel, and sides. upper and last are placed in position on the usual last-holding pin in the head, the toe of the last and upper meeting the toe-rest, as shown in dotted lines. The carriage sustaining the crimpingjaws or pullers and the slide carryiug'the fingers are then adjusted horizontally and vertically into proper position with reference-to a shoe of the length and size upon which'they are to operate. The jaws in such adjusted position will be elevated, so that their pivotal points will occupy a position in a plane ouefourth to three-eighths of an inch higher than the plane which the outer or free ends of the jaws will occupy when restiing upon the upper edges of the last at toe and heel, as hereinafter described.

Assuming tl' at the operator has his left hand upon the adjusting and-lacking lever q and his 1 right hand on the lever d, for moving", forward and closing the jaws, he will with one hand first throw back the adjusting-lever q, so as to elevate the ends of the jaws on a line with the last, and with his other hand he will then move lever d to close the jaws until their downwardlycurved points or ends rest on the upper at the edge of the last. 111 this position the curved portions m of the jaws will be elevated somewhat abov the extreme end of the last. Then the operator will, reverse the movement of lever q to press the slide ldowu until the ends and inner curved edges of the .jaws press down upon the upper about the arms 11 are also provided with upper-press U entire ends of the last, heel, andtoe, after which he will operate the handle or lever d and move the crimping jaws' or pullers forward over the last, they at the same time closing together and wiping the edges of the upper snugly about the last. The edge ot'tlie upper is, most fulled or crimped at the points of greatest curvature of the last-412,, the ex-, treme toe' and heel, The portion a. of the jaws, near theirfulera, meet these heel and toe portions, and, being made of spring-steel, are allowed to yield back to their fulcra, which would not be the case were the ends of the jaws held in cast-iron blocks, as heretofore. These jaws c of spring-steel, curved from their outer ends to their fulcra, are adapted to bearfirmly at all points on the upper below them and spring or yield to the thickness of the crimp or plait without tearing the stock.

1 When the jaws are moved forward and closed, the operator, previous to tacking, will give the lever q an extra pull to lower the Then the position of the jaws or crowd them down with sdditional'force upon the edges of the shoeupper soturned. over, and such lever locked by the locking device will hold the upper firmly under pressure and strain, while the tacks are'driven into the upper and inner sole through the holes 0 in the jaws. These jaws, having working-edges beyond the holes, enable the upper to be made or cut smaller than would be the case if the driven fastenin gs holding the upper to the inner sole were driven outside the working-edges of the jaws, and consequently very much less upper is lapped or folded over upon the inner sole, and the cost of the shoe is chea'pened.

It is obvious that the amount of strain upon the upper and the closeness of its fit to the last will depend upon the force with which the jaws are pressed down as they are moved forward and closed. This final pressure by the downward movement of the slide 1 after the jaws are closed may be in'excess of the pressure that the upper would'stand while the jaws were being moved forward.

The locking devices may be modified without departing from this invention.

I claim-- 1 1. Crimping jaws or pullers to draw over and plait in the uppers of boots and shoes, in combination with an adjusting-lever and locking devices, fonelevfiingand depressing the jaws and locking the same fast at any desired Dsition.

the upper surfaces of thejaws, combincdwitha tipping supporting-plate, upon which the jaws are carried, and an adjustin device, substantially as described, to tip 1c said plate and jaws and hold and adap them to the shape of the bottom of the last.

4. Crimping jaws or pullers and a tipping or supporting plate pivoted at its inner end,

- in combination with an adjusting device or screw to turn the plate on its pivot, to adjust the jaws or pullers to conform to the shape of the last.

5. In combination, crimpingjaws or pullers to draw over and plait in the uppers of boots and shoes, the supporting-plate pivoted at its inner end, the set-screw or equivalent to adjust the outer cnd of the plate to give to the pullers any desired elevation or depression requisite to conform the same to the shape of the last, and devices to adjust the position of the jaws vertically and horizontally.

6. The combination, in a lasting-machine, of

.the following instrumcntalities, viz: an adjustable "pivoted s pporting-plate, crimpingjaws, mechanism to reel mate the jaws longitudinally and to close 15 em as they move forward, and an adjusting-lever adapted to be operated to press the forwardly-moving jaws down upon the upper, so that the pullers bear with a yielding pressure upon the upper while the tacks are being driven, substantially as described. i

7 In a lasting-machine, jaws or pullers provided with holes back of the working-edges, to push over the edge of the upper of a boot or shoe, and to permit sole-fastenings to be driven through the said holes for the purpose of securing the upper to the inner sole, in combination with'a tipping supporting-plate, devices, substantially as described, to adjust the plate-carrier vertically, and a locking device .to hold the plate and carrier, substantially as .described.

8. The combination, with the head h of the machine, adapted to be supported on a swiveling jack, of shank-lasting mechanism, substan-. tially as described, and mechanism to move all of such shank-lasting mechanism in dependently with relation to the toe and heel lasting devices, to adapt the shank-lasting mechanism to shoes of different sizes.

9. In a lasting'machine, the head, arms 11,

shank-lasting fingers, and springs to bear upon the sides of the upper, in combination with mechanism to simultaneously adjust the arms an their fingers and springs vertically and lon itudinally with relation to the head and the height and length of the last, substantially as described.

10. In a lasting machine provided with shanklasting mechanism, the combination, with the head carrying such shank-lasting mechanism, of a horizontally-movable frame, a ertically-movable slide, and devices to move and adjust such frame and slide horizontally and vertically to simultaneously place the shoe and the shank-lasting mechanism in operative position according to the size of the shoe.

11. In combination, the finger-carrying slide the arms and fingers,

tially as described.

12. The jaws curved downward from their fulcra to their points or ends, in order that when pressed down upon the shoe by the adjusting-lever the jaws will yield to permit the entire inner curved portion of both jaws to act with ayielding pressure while they draw over and fit the upper to the configuration 'of the last.

13. Crimpingjaws or pullers made entirely of sheet spring-steel, and curved, as described, froni their front ends to their fulcra, to adapt themselves to the folded-over edges of the upper at the toe and heel of the last, as set forth.

HENRY G. THOMPSON.

Witnesses:

N. E. WHITNEY, SAML.E. Mownn.

and link and lever to close and open the arms, to operate substan-

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