US526987A - William h - Google Patents

Description

(No Model.)`

W. H. AUSTIN. MACHINE FOR MANUFAGTURING LASTS FOR BOOTS 0R SHOES.

No. 52t3,98'7. Pamgnted 001:. 2,1894.

THE Nunsls Firms cu. vnurau'ma. wAsmNmDN. t; c.

amsn STATES WILLIAM II. AUSTIN, on BRooKToN, MASSAoHUSETTs-ASSIcNoR To HIMSELF, WILLIAM H. CARY, wILLIAM'TIIoMPSoN, AND AUGUSTUS A. DELANO, on

SAME PLACE.

MAcHlNE FOR MANuFAoTumNc'LAsTs Foaoors oR SHOES.

SPECIFICATION forming part' of Letters Fatent No. 52 6,9187, dated October 2, 1894.

' Application filed February l, 1892.V Serial No. 419,7919. (No model.) i

To all whom it may concern.-

Be it known that I, WILLIAM H. AUSTIN, of Brockton,in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Machines for Manufacturing Lasts for Boots or Shoes, of which the following is a full, clear, and exact description.

In the manufacture of lasts for boots and Io shoes in alast machine, there is left on each last at the toe end, as it leaves the machine a stub or projecting piece, by which the last is held in the vlathe at such place, which necessitates leavinga portion of the under surface of the last at the toe in an unfinished condition and which portion has to be out and trimmed away and which has heretofore been done by hand, and. this invention consists of a machine constructed and arranged for op- Vzo eration substantially as hereinafter described to cut and trim off the under portion ofthe toe of a last, or that part at the toe end, which is not cut away in the last machine, vto make the under side of the last at the toe of the z 5 proper outline and finish,all substantially as hereinafter fully described reference being had to the accompanying sheet of drawings, in which- Figure 1, is aside view and partial section 3o of the present machine, showing iu dotted lines in side View a last in positionfor operation thereon. Fig. 2, is-a plan view. Fig. 3, is a vertical cross section on line 3-3, Fig. l. Fig. 4, is ka. detail horizontal section on line 3 5 I-4., Fig. 3, and Fig. 5, is a detail cross section on line 5 5, Fig. 2.

In the drawings A represents a bed frame for the support of the various parts of the machine which can be supported on any suitable 4o stand or bench.

B is a vertical shaft adapted to rotate in bearings C, of the bed and having a pulley D, and belt E, for the turning of the shaft. Secured to the upper end of this shaft is a plate or disk F, having secured on yits upper side in any suitable manner diametrically opposite to each other, two cutters Gr, having cutting edges a, their upper surfaces H, being hollowed out or concave to correspond to the convexity required for the under surface 5o of the toe of the last which is to be trimmed.

At the side of the disk or plate is secured in the support a rest or'guideJ, on which the last near its toe end' rests iu operation thereon, and which is the guide vor gage for the trimming of the'toe, it being curved horizontally and has its upper side rounded in cross Section as shown in Figs. 1 and 3.

K is a plate or holder having a central downwardly projecting. pin b, which freely 6o fits in a vertical socket d, of a support L, of the bed frame, .on which the plateor holder canswivel, and it can be secured rigidly in positiony by a set screw e, which screws into the supportto bear against the pin b.- M is a collar on the pin b, to which it can be secured by a set screw f, which collar serves as a rest or bearing for the holder and ou which it cau freely-turn, and which being moved up or down, the holder K can be ad- 7o justed as to its height on its support.

The supporty L, has an under dovetail rib g, which freely lits in a corresponding longi tudinal groove P, in the bed A, along which groove the Support can freelyslide to and fromthe cutters, and it issecured at any desired point. therein by a tapering screw Q,

screwing in a'corresponding screw socket in the portion m, of the support, which portion has a longitudinal vertical central slit n, sepa- 8o rating it into two longitudinal partsthrough and between which the screw passes, so that screwing in the screw Q, it will by its taper, force or spring the two parts apart Sidewise and causing them to bind against the sides of the groove in the bed will firmly hold the support from moving along the bed.

` The holder K has a groove r, in its upper side at right angles to the bed groove P, in which fit the under ribs t, of two blocks R, 9o opposite to each other, and in which groove they can freely slide back and forth, and to and from each other, the blocks hav-ing on their upper side and facing each other shoulders u, as shown in Fig. 3, more particularly. The holder has on one side two horizontal slots o, through each of which freely passes a screw S, each screwing into a block R, and

by which after the blocks are moved along their holder into proper position are there secured by tightly screwing up the screws S.

The last T to be operated upon is placed by its heel portion in between the two blocks R, resting on its shoulders it, and its toe end U, resting on the semi circular rest J, the blocks being moved along the groove r', to adjust the proper position of the last laterally upon its support and being pressed against the last are secured in place by tightening the screws S. The rest or support for the heel end of the last is then moved along its groove P, until the toe end of the last projects over the path of the cutters the proper distance for the proper cnt of the toe of the last by the cutters. Then the screw Q, is turned to secure the support in place ou the bed,'th e last being free to be moved or swung to the right or left on the collar M, on its central pin or pivot b, all as shown in Fig. 3. The last being properly adjusted in position the shaft B, is revolved which revolves the plate and its cutters G, and as they revolve the last is pressed on and across its rest or guide J, swinging on the pivot or pin b, its toc end passing over the cutters which then cuts 0E the under side of the toe of the last, accordingly, the form of the upper side of the guide regulating the amount of out by the cutters and the shape given to the toe by them in operation. The blocks R are then loosened in their positions by turning out their screws S, and another last put in place and secured 5 and its toe operated upon as before.

Vhen lasts of the same size are to be cut or trimmed one after the other, the support is not changed in its position but if a different size, longer or shorter, is to be cut, the support L, is moved along the groove P, correspondingly and there secured in place. Only one cutter n eed be used at a time and in that case the one not used can be lowered in its socket in the plate.

Having thus described my invention, what I claim is-' l. In a last trimming machine, a support for the heel of the last, a revolving shaft, a cutter or cutters sup ported by said shaft and a guide or rest for the fore part of the last, its bearing surface extending in a horizontal plane in a curved line or arc of a circle outwardly from the heel support, and transverscly rounded on such surface in cross section. v

2. In a last trimming machine, a swiveling support for the heel of the last, a revolving shaft, cutter or cutters supported by said f shaft, and a guide or rest for the fore part of the last, its bearing surface extending from the heel support in a horizontal plane in a curved line or arc of a circle outwardly from the heel support, and transversely rounded ou such surface in cross section.

In testimony whereof I have hereunto set my hand in the presence of .two subscribing witnesses.

WILLIAM I-I. AUSTIN.

itnessesz W. THOMPSON, EDWIN W. BROWN.

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