US241633A

US241633A - William dunn

Info

Publication number: US241633A
Authority: US
Publication date: 1881-05-17
Anticipated expiration: 1898-05-17

Description

W. DUNN.

Saw Set (No Model.)

No. 241,633. Patented May17,l88h

UNITED STATES PATENT OFFICE.

WILLIAM DUNN,;OF BUFFALO, NEW YORK, ASSIGNOR TO EDWARD J. HALL,

OF SAME PLACE.

SAW-SET.

SPECIFICATION forming part of Letters Patent No. 241,633, dated May 17, 1881.

Application filed February 3, 1881.

To all whom it may concern Be it known that 1, WILLIAM DUNN, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Saw-Sets, of which the following isaspecification, reference being had to the accompanying drawings.

This invention relates more particularly to a machine for setting the teeth of circular saws;

and it consists of the construction, combination, and arrangement of the parts which compose the machine, as will be hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a side elevation of myim proved machine. Fig. 2 is a longitudinal vertical section of the same. Fig. 3 is a top-plan View of the machine. Fig. 4 is a perspective view of the hammer. Fig. 5 is a perspective View of the anvil. Fig. 6 is a cross-section in line at a, Fig. 1.

Like letters of reference refer to like parts in the several figures.

A represents the bed of the machine, provided at one end with an upwardly-projectin g lug,B, having a vertical slot, b, in which is arranged the fulcrum-bearingG. The latter rests on a spring, 0, which presses the bearing 0 upward, and the bearing is held down by a setscrew, d, so that by tightening or releasing the set-screw the bearing can be raised or lowered in the slot 1).

E represents the lever to which the hammer F is attached. This leveris pivoted to thebearing 0 by a horizontal bolt, 0, and is provided with a nose, 0, which limits the upward move mentof the lever by striking against ashoulder, 6 on the bed. The hammerF is provided with two faces, ff, arranged on opposite sides and made of different widths. The hammer is secured in a socket, f, on the under side of the lever E, by a bolt, g, so that the hammer can be reversed in the socket and either face be rought over the anvil G. The hammer F can 5 removed from the lever E and be replaced y a hammer having faces of greater or less I idth, in accordance with the size of the saw- The anvil (N0 model.)

in which the anvil is held. The anvilis made square, and provided on its upper side with four faces, h h it lb of different bevels, either of which may be brought under the hammer by releasing the screw g and turning the anvil.

I represents a rib arranged on the bed A,in the rear of the anvil G, and forming a supporting-surface for the saw.

K represents an arm, which bears upon the saw and prevents the latter from rising when the hammer depresses a tooth. The arm Kis provided with a vertical pivot, which turns in a socket, k, formed on the bed A, and is held in place by a set-screw, k.

l is a longitudinal slot formed in the bed A, and M is the saw-carrier, made adjustable in the slot l toward and from the anvil. The carrier M consists of a plate resting on the bed A, and provided with an up wardly-projectin g hub, m, adapted to pass through the eye of the saw. The carrier M is secured to the bed byavertical bolt, m, passing through the hub of the carrier, and provided with a screw-nut on its upper side. Upon releasing the nut the carrier M can be moved toward and from the anvil and adjusted to correspond with the diameter of the saw operated upon. The hub m'is composed of a body formed in one piece with the saw-carrier M and an adjustable piece, at, provided with a slotted horizontal base, m which is adjustably secured to the 'carrier M by a screw-bolt, on. By adjusting the adjustable piece at toward or from the body of the hub the size ofthehubis decreased or increased to adapt it to the varying sizes of the eyes of the saws.

The circular saw to be set is placed upon the carrier M, and the latter is adjusted on the bed so as to bring the teeth of the saw over the forward beveled face, h, of the anvil. The teeth of the saw are set by bringing the hammer down on the teeth with greater or less force, as may be required, the saw beiu g turned by hand during this operation on the stud or huh m of the carrier M. By raising and lowering the pivot-bearing G of the lever E the inclination of the lower face of the hammer Fis adjusted to correspond with the particular bevel of the an vil which is required to be used in setting the saw and to correspond with the thickness of the saw operated upon.

I claim as my invention-- 1. The combination, with the bed A, provided with an adjustable anvil having two or more faces of different bevel, of the hammer F, attached to a lever, E, having its pivot made vertically adjustable, whereby theface of the ham mer is adjusted to correspond with the bevel of the anvil, substantially as set forth.

2. The combination, with thebedA,pr 0vided with lug B, having a vertical slot, 1), of the'bearing 0, resting on the spring 0 and held down by a set-screw, d, and the lever E, pivoted to the bearing 0, substantially as set forth.

3. The combination, with the bed A, of the anvil G and supporting-surface l, arranged in WM. DUNN.

Witnesses J NO. J. BONNER, EDW. J. BRADY.