US352851A - Machine for preparing vamps for lasting - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

M. BROCK. MACHINE FOB. PREPARING VAMPS FOR LASTING.

Patented Nov. 16, 1886` Mmes/65.

N4 PETERS. Pham-Liwgnlphaf. Walllingwli. DA C.

(No Model.) f s sheetssheet 2.

' M. BROCK.

MACHINE FOR PRBPARING VAMPS FOR LASTING.

No. 352,851. Patented Nov. 16, 1886` fafff f ulllll llll@ O u u l@ (No Model.) 3 Sheets-Sheet 3.

M. BROCK. MACHINE POR PREPARING VAMPS FOR LASTING.

No. 352,851. Patented Nov. 16, 1886.

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W'IkL-IEEEEE. -lrrT/Eqlzml t Enid/M W f fUNITE.-JSTATES PATENT vEEICEo j MATTHIAS EEOCK, OE BOSTON, MASSACHUSETTS, ASSIGNOE To MCKAY a COPELANE LASTINCr MACHINE COMPANY, OE PORTLAND, MAINE.

MACHINE FOR PREPARING VAMPS FOR LASTING.-

SPECIFICATION forming part of Letters Patent No. 352,851, dated November 16, 1886.'

Application fum Jane 11, isst.

lb aZZ whom it may concern:

Be it known that L'MATTHIAS BROCK, of Boston,county of Suffolk, and State of Massa- `chusetts, have inventedan Improvement in Machine, for Preparing Vamps for Lasting, of whichthe following description, in connection with the accompanying drawings, isa specifi tion', like letters on the drawings representing liker parts.

-When applying the upper to a last in that step of manufacturing boots and shoes called lasting it is necessary, in order'to do good work, that the toe of the upper be drawn smoothly about and fitted snugly to the toe of the last, and that the edges of the'upper folded about the toe and under the bottom of the last be slitted, so that one part may somewhat overlap the other and avoid plaits in the up-f per next the bottom of the last.

I have provided and shall hereinafter describe a machine for clamping the edgesof the upper about the toe and outside of but independently of the toe of the last while the latter is being fitted intothe upper, the machine also slitting the edges of the upper about its toe part preparatory to turning the said edges over upon the bottom of the last, as will be described. y f

In my improved machine the upper of the boot or shoe to be lasted is clamped at and about its toe part and held while a presser, acting upon the bottom of the last provided with an inner sole, is crowded down into the upper, the latter being thereby stretched, and vthe stretching having been completed, or substantially so, theedge of the vamp about the toe is slitted, and, if desired, when slitting the edge of the upper, a portion of the material may be cut out, leaving a notch more or Vless V-Shaped. Figure l, in side elevation, representsasuf- -cient portion of a machine lfor preparing vamps for lasting to enable my invention to j be understood; Fig. 2, Ia front end elevation thereof Fig. 2, a perspective View of the j aws; Fig. 2", a detail showing the jaw-closing lever; Fig. 3, a top or plan view of Fig. 1; Figs. 4 to 7, details showing the jaws for holding the slitting knives or cutters; and Fig. Sis a par- 'ft'ialsectional Y`detail to show an upper being stretched to be itted to a last.

Serial No. 204,853. (No model.)

The frame-work A, of suitable shapeto support the working parts, has pivoted upon it by a suitable bolt or pivot, A, an arm, A2, which at its forward end-has pivoted to it, as at a, the upper ends of two links, B, shown as slotted at their lower ends, (see Fig. 1,) to embrace suitable pins or projections, b, extended from'a lever, B, having its fulcrum at B2, the l said lever being forked at its pivoted end to embrace a hub or bearing-piece, B3, forming a rigidv part of the frame-work;

The right-hand end vof the lever B (see Fig. .i

l) has connected to it a link, B4, which in practice will be jointed to asuitable treadle at the floor under the bench or table upon which the base of the `frame-work A isk mounted, the Said treadle being acted upon by a suitable spring or weight, which will normally keep the treadle and the lever B elevated.

Fig. l shows the lever B as fully depressed, thedifferent parts of the machine being in the position that they will occupy when the upper has been stretched `and slitted.` The movement of the lever B raises and lowers the arm A2. This ar'in, at its front end, receives the shank D of the presser-foot d,which is to act`upon thebottom of the last or inner sole thereon, and press it snugly down into the upper,while the said upper is held by the jaws, to be described, the said shank being surrounded by a spiral spring, d', the upper end of which abuts against a shoulder, dz, (see Fig. 2,) at the front end of the arm A2, the shank of the said presser being free to slide vup through the hole in the said arm whenever, in the descent of the varm A, the foot d meets the inner sole on the last, it then acting to press the last into theupper of the boot or shoe.

The upper of the boot or shoe is opened out, and has its toe portion with the inner side of the upper uppermost placed between thel f jaws h h. The outer face of the upper is laid upon the rest di which is preferably a piece or strip of rawhide laid upon and forming`the surface of the bed-plate d5.

The arm A2 has pivoted to it by the pivotbeing adjusted about their common pivot e', by screws es and e4, in slots made in thesaid arm A2, as shown in Fig. 3. These holders,`

provided with segmental grooves, receive in them the blade or knife carrying blockse e, the said blocks being secured in place by screws 2 2. The blades or knives c (see Figs. l and 2, full lines, and in Fig. 5 by dotted lines) are secured in radial slots ofthe said blocks by screws c?, passed into diagonal holes, (see Fig. 6,) the said screws inipinging against the shanks of the blades or knives after they have been placed in the said slots, the slots preferably occupying, as shown, radial positions with relation to th'e center of the curve represented by the curve of the last. l These blades cut through the vamps and upon the rawhide d4, referred to, when slitting or cutting the Vamps. The eXtra movement of the arm A2, after the foot d has been arrested, as described, enables the upper to be held iirnily, while the arln A continues its descent to place the blades or cutters in contact with and to cut through the upper while held by the jaws h h. The underjaw, hf, has a number of toothed or scored projections, which, when thejaws are fully forward,

Venter slots in the bed-plate, so that the said projections extend toward the foot d, between the blades or knives'c. The upper jaw, 7i, provided with a series of toothed or scored projections to co-operate with the toothed projections of thejaw la to form a' clamp, is pivoted at ha upon an ear or lug arising from the lowerjaw, h. The upperjaw, 71, is surmounted bya metal plate, lat, attached to the said upper jaw at the front end by a bolt, h5, the bolts h h6,

Vwhich are inserted through the rear end of the said plate, being also extended through the said upperjaw, and also through a spring, hl, preferably a block of india-rubber, after which the said bolts are passedthrough a cap, hs, and have applied to them suitable nuts, lr. The

` `lower jaw, back of the pivot h3, has suitable ears, 3, to receive a pin, 4, which serves as a fulcruln for thejaw-closing lever m, having a curved or cam-shaped' end, as m, to act upon a roller, m2, mounted upon a pin, m3, inserted through two ears, m4 m4, forming part of or connected to the plate ht, the said surface, by its contact with the said roll, causing the jaw h to grasp the upper between it and the lower j aw; but in caseof variations in the thickness of the upper, which would do injury, the spring 71,1 permits the plate h4 to yield to a limited extent.

"` When the arm A2 is `fully lifted, and while p the parts are in position for the edge of the upper about its toe to be placed between the jaws of the clamp, the jaw-closing lever is so turnedupon its fulcrum 4 as to bring the notch m5 below the roller m2, and in such condition thejaws h h are free to open, the rear end of the upper jaw, 7L, being the heavier. The

lever m is operated by a link, n, jointed to it, the said link being jointed to the lever B' at a. The lower jaw, L,` is acted upon by a spring-arm, n3, (shown chiefly by dotted lines, Fig. 1,) which at its lower thesaid spring n3, while the opposite end of-` the spring o is acted upon by a shoulder of a screw, o', screwed into an ear, o2, secured to or forming part of the framework A. The slits 8 are made entirely through the blocks e5 c from their conveXed to their concaved walls or faces, thus permitting the blades or knives c to be adjusted in the direction ot' their width, to thus enable the inner corners ot' the blades to occupy a position more or less from the curved end of the` last. j j I. M

In Figs. 4 and 5 the positions of the blocks e5 e6 have been reversed, as may be the case,.if desired, to vary the introductionof theislit the toe ofthe upper; ,A y Vhen the machine is ready to bestarted, the jaws 7L h are pushedback toward the right in Fig. l by a spring, n3, ready to be moved forward, if need be, by strains exertedfupbn the upper. The operator places the last",` rwith the inner sole laid thereon or attached .thereto in usual manner,` withi n the upper, and the toe.

'of the upper is then placed between the h h', the operator holding theup'per with'thle last therein in his hand. In this positionithe operator depresses thelever 1,3.'and ,by th link n turns the jaw, causingthe levergm to close the jaws h h firmly `upon and so'. aste.,

clamp the edges of the upper." ,Thisdondlthe lever B,in its further descent through theli'nks 1B, effects the depressionof thearm Abbi-ing* .ing the foot d against the innersole, S, lying `upon the bottom of` the,la stwforcing thela-st `into andstretchingtheupper, and,,nallyQin the descent of the arm A, the knives'orblades c meet the upper, as described,`betvlfeegrl,thel points where it is graspedby the toothed pro:`

j eclions of the jaws 7L h, cutting or slittingthe said edges. t .j During the operation of crowding the last `L into the upper, both ,held` by the operator,

should the upper held bythejaugslifbeltoo short to stretch properly, then the upper would `be torn, were it not for thlespring 11.3,. which,

under strain sufficient to draw theupper, from.

the jaws, will permit the jaws li `7i toinove' ward against the strain of thesaid spring ai; but, finally, the ends of` thejaws willQIneet shoulderscut into or forming pant ofthebbdyj. d5, and thereafter undue or excessive ,strain will be compensated for Yor counteract `further yieldingor compression'ofythe, sprng d', surrounding the shank D,

The blocks e5 e6 are slotted"rnlotgfhfnon"r their concaved to their convexed edgestoref,

ceive the blades or knives c, the saidblades -or knives being thus free to be adjusted in thedirection of their width, in ordertoadapt the,4 inner edges or corners ofthe said. boltsrpfr,p knives to the shapeof the toe ofthelastbeing IZO used, such provision for adjustment being a matter of great convenience, as the toes of lasts vary very considerably in contour, such adjustment being frequently needed even in 5 dilierent sizes of lasts of the same shape.

l. In a machine for preparing Vamps for lasting, a pair of jaws to grasp the edge of the upper about the toe of the last, combined with tom of the last or the inner sole thereon to crowd the last in to the upper, andwith means, substantially as described, to actuate the said presser-foot.

I5 2. In a machine for preparing Vamps for lasting, a pair of jaws to grasp the edge of the upper about the toe of the last, and slitting mechanism to cut or slit the edge of the upper while held by the said jaws, combined with a yielding presser-foot, d, to act upon the bottom of the last or on the inner sole thereon to crowd the last into the upper, and with means, substantially as described, to actuate the said presser-fot.

25 3. The combination, with the jawsh h', and

the plate h4, and a spring, as a, of a jaw-operating lever to close the said jaws, substantially as described.

, 4. In a machine for preparing Vamps for 3o lasting, a yielding presser-foot to act upon the a yielding presser-foot, d, to act upon the botbottom of the last or inner sole thereon to force the last into the upper, and the pairk of jaws toy grasp the edges of the upper about the toe of the last and hold it while the last is being forced into the upper, combined with a spring 35 to permit the jaws to'movelongitudinally 'under excessive strain applied to the upper, substantially as described. 5. The lever A2 and its attached yielding presser or foot d and holders e e2, with the 4o segmental blocks e5 e, adjustable in the said holders and slotted for the reception of the knives or blades to slit or cut the upper, substantially as described.

6. The lever Ay and theholders e e, pivoted 45 thereon, as described, combined with the blocks e5 e", slotted as described, and with the blades or l knives therein made adjustable in the direction of their Width or longitudinally inthe said slots or toward and from the toe of the 5o last, to adapt the blades to lasts of different size or curvature, substantially asl described.

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

MATTHIAS BROCK.

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