USRE409E - Stephen k - Google Patents

Description

STEPHEN K. BALD\VIN, OF GILFORD, NIEVV HAMPSHIRE.

lMPROVEMENT IN MACHINES FOR CUTTING SHOE-PECST Specilicatiou forlnngpart of Letters Patent No. 2,725, dated July 16, |1542; extended July 8, 1856 Re'ssue No. 409. dated November 4, 1856.

'fo all whom t may concern,.-

Be it known that I, STEPHEN K. BALDWIN,

of Gilford, inthe county of Belknap and State of New Hampshire, have invented a new and useful Improvement in the Machine for Cutting Pegs, which is described as follows, reference being had to theannexed drawing of the same, making part of this specification.

The figure is a perspective view.

Similar letters refer to corresponding parts.

The bench or frame A, for supporting the several parts hereinafter described, and upon which the iluted block to be cut into pegs is placed, is made in the usual manner. A post, B, (to which one end of the knife for cutting the pegs and an arm resting on the back of the knife are attached,) is passed vertically through an aperture in the bench, being secured therein by keys or wedges, so that it can be raised or lowered at pleasure for the purpose of setting the end of the knife attached thereto higher or lower at pleasure. The shearing-knife C, for cutting the block into pegs, is made of steel tapered. lt is attached to the post B by a. bolt passcd'through it and a curved projection of the large end of the knife, and on which it moves or vibrates. The small end of the knife is attached to a whip-staff by a horizontal pin or bolt passedthrough them. The whip-staff D is made in the usual manner, and is attached by its lower end to the wrist of a crank, E, on the end of a revolving shaft, F, on which there is a fast pulley, G, and a loose pulley, H, of the usual form and construction. A sliding box, I, in which the wrist of the crank turns, is combined with the whip-staff near the lower end thereof, and is raised or lowered by keys `K for the purpose of adjusting the depth of the stroke of the knife at pleasure, by increasing or diminishing the distance between the wrist and the knife. This sliding box is a rectangular block placed in a rectangular mortise in the whip-stati' of the same width as the block, but greater length, so as to allow it suf- Iicient play therein, having wedge-shaped keys inserted in said mortise at each end of the sliding box. The aperture in the box for the wrist is of the same diameter as the Wrist.

The sliding frame, containing the fluted roller for holding down the fluted block or bolt upon the bench, and for drawing it forward to the knife, is composed of two vertical timbers, L L, which pass through mortises in the bench placed at the required distance apart and united by a horizontal transverse tim. ber, M, mortised and tenoued into the same. The tinted roller O is made the length of the frame inside and of sufficient diameter, and turns on pivots or gudgeons in said frame'. Mortises or slots are made in the vertical sides of said frame to permit them to rise and fall over horizontal plates P, secured across the openings in the bench in which the frame rises and falls. Two vertical screws, Q, for raising and lowering the frame, are inserted into the upper ends of theside pieces vof the frame, extending down into the aforesaid mortises and resting upon the fixed horizontal plates P ofthe bench, crossing said mortises. When the frame is to be raised, the screws Q are turned to the right, and when it is to be lowered they are turned to the left, the weight of the frame and roller causing it to descend. A weight, R, may be attached to the lower crossbar, M, of the frame, for holding down the roll er upon the uted bolt, or to one end of a lever, S, resting upon said cross-bar M, its other end bearing vagainst a spiral spring (represented by dotted lines at Z) placed between it and the under side of the top of the bench A.

The machine is rendered self-feeding in the following manner: On one end of the luted roller is fixed a toothed wheel, U, made like a circular saw. Over this wheel is arranged a reaching-arm, V, having an oblong mortise in the same, in which the toothed wheel turns. The upper end of this reaching-arm is attached to a vibrating bar or lever, W, one end of said bar or lever being attached to the head of the post B by a bolt, which will be the fulcrum, while its other end is passed through a mortise in a shifting block, X, which rests upon the back of the cutter C, said block X being made adjustable on said bar bykeys or wedges Y, for the purpose of moving the block nearer to or farther from the fulcruni for increasing or diminishing the sweep or movement of the lever, and consequently that of the reaching arm or toothed wheel. A spiral spring, d, is attached to the bench and to the reaching armfor drawing down the latter.

Operation: A band, J ,leading from the driving-power,` being shifted from the loose pulley H to the fast pulleyG, the machine will be putin motion, a'nd as the crank-shaft F turns it raises the knife C by the whip-staff' D, and at the same time the lever WV and reaching-arm V, which turns the ratchetwheel U and roller O, which feeds up the luted bolt b as far as the required thickness of the peg to be eut, andthe erankshaft,con tinning to revolve, brings down the knife C, makes a cut the thickness of the pegs, at the same time bringing down the reaching-arm V for a new hold on the toothed wheel, the arm yslipping over the backs of the teeth, which are sloped downward to allow of this n1ovement. In this manner the operation is oontinued until the bolt is cut in parallel cuts fromone end to the other. The bolt is then turned round and eut at right angles t0 these former ents in the same manner, which com"y pletes the operation. 'Ihe bolt b is previously furrowed, grooved, or sawed in parallel lines at right angles in the mannerthat it is required to be eut upint-o pegs. The teeth or ribs of the roller enter the channels or grooves of the bolt previously sawed therein. If the blocks are intended for coarse or fine pegs, the grooves are made accordingly, and they form the points of the' pegs; hence there must be a roller placed in the sliding frame, Whose flutes correspond with the grooves on the block whieh the operator wishes to out into pegs.

Instead of the vibrating knife C, a recipr0-

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