US135575A

US135575A - Improvement in sawing-machines

Info

Publication number: US135575A
Authority: US
Publication date: 1873-02-04
Anticipated expiration: 1890-02-04

Description

UNITED STATES TENT CEEIGE.

WILLIAM NEIDEEEEE, 0E MITCHELL, INDIANA.

IMPROVEMENT IN SAWING-MACHINES.

To all whom it may concern:

Be it known that I,WILLIAM NEIDEFEER, ot" Mitchell, in the county ot' Lawrence and btate ot' Indiana, have invented a new and valuable Improvement in Sawing-Machines; and I do hereby declare that the following is a full, clear, and exact description ot' the construe tion and operationot' the same, reference being had to the annexed drawing making a part otl this specication, and to the letters and ligures ot' reference marked thereon.

Figure l ot' the drawing is a representation ot a side view of my invention. Fig. 2 is a top View of my invention.

lhis invention has relation to sawing-ma chines; and consists in the construction and novel arrangement ot' a spring-motor with de.- vices for communicating motion therefrom to the saw, and a friction-brake to prevent the recoil ot' the spring while it is being wound up, all as hereinafter moreI lully described.

In the accompanying drawing illustrating this invention, A designates the frame of my improved sawing-machine. upon one end ot which moves the saw-carriage B, provided with a-weighted cord, U, which passes over a roller, d, 011 a transverse shaft, d', ot' t-he frame, and operates to draw the table back automatically when the board is cut. D indicates the sa-w, and D the saw-shaft, the latterjournaled transversely upon the frame A, and provided with the pinion E and frictionroller F. The frictioni'oller is arranged out-- side the frame. A similar roller, E2, is placed on the end ot' a transverse shaft, e, which has its bearings in slots or large boxes, and is capable ot' being shifted at its end toward and away from the roller F. The sha f't c is armed with a dog, G, which engages with a rack, g, on the side ot' an upright plate, H, and is designed to hold the roller E2 either in close contact with or apart from theroller F, accordin g as it is required to have the saw stationary or running. l denotes a transverse shaft, holding a spur-wheel, t, which engages with the pinion E, and a pinion, i', which engages with a spur-wheel, i2, on a transverse shaft, i3, which is also furnished wit-h a pinion, i4, engaging with the main spur-wheel J attached to the transverse motor-shaft K. L designates a spring, having one end attached to the frame A, and the other to the shaft K. This spring is wound by turning the crank M ou the end ot the shatt K. A ratchet-wheel, N, is secured to said shaft, and communicates motion and power to the wheel J through the medium ot' a pawl, o, pivoted to saidV spur-wheel, and held in position by means ot a spring, P. While the spring is being wound the pawl allows thc ratchet to turn independently ot' the wheel J. For thepinion E and spur-wheel L', a. pair otl belt-wheels and a belt may be some` times advantageously substituted. When the rollers F E2 are brought closely together, the movement ot the devices for communicating motion to the saw is prevented.

What l claim as new isl. The combination ofthe spring L, spurwheel J, pawl and ratchet o N, gea-ring E 'i il t2 4, shaft L', and saw D, substantially as specified.

Witnesses:

O. METCALF, WILLIAM A. B UETON.