US416397A

US416397A - Saw-jointer

Info

Publication number: US416397A
Authority: US
Publication date: 1889-12-03
Anticipated expiration: 1906-12-03

Description

(No Model.) Y

vJ. P. COLEMAN.

SAW JOINTER. A

Patented Dec. 3', 1889.

A mlmnlll'" "u" I UNITED STATES PATENT OEEICE.

JOHN F. COLEMAN, OF BARFIELD, ARKANSAS.

SAW-JOINTER.

SPECIFICATION forming part of Letters Patent No. 416,397, dated December 3, 1889.

- Application filed June 1, 1889. Serial No. 312,902. (No model.)

To all whom it may concern: v

Be it known that I, JOHN F. COLEMAN, of Barlield, in the county of Mississippi and State Of Arkansas, have invented a new and useful Improvement in Saw-Jointers, of which the following is a specification.

My invention consists in a new and improved saw-jointer, which will be hereinafter fully described and claimed.

Referring to the accompanying drawings, Figure l is a perspective View of my invention. Fig. 2 is a central longitudinal sectional view, and Fig. 3 is a transverse vertical sectional view taken through the stationary and sliding blocks.

-The same letters of reference indicate corresponding parts in all the 'igures Referring to the several parts by letter, A indicates a fiat metal plate, which is secured by screws passing through end holes a in it to a filing-post above the center of a circular saw whichhas been placed on the tiling-post for treatment. This stationary plate A has a threaded bolt A projecting out from its center, on the outer end of which is a thumbnut A2. i

B indicates an L-shaped sliding or adjustable plate, the vertical upper part of which is formed with a longitudinal slot B', through which the bolt A of the stationary plate projects, the base a of this bolt being squared to iit the slot B and prevent the adjustablel plate from turning on the bolt.

C indicatesa block, which is recessed on its lower side longitudinally to form guideways C C. When this block C is of wood, the lower horizontal part of the plate B is secured upon it, as shown, by screws c passing through end holes b in this part of the plate and into the wooden block; but when the block C is of iron the adjustable plate B and block C are preferably cast together integral.

D indicates a sliding block, which is formed with upper longitudinal side flanges D D to adapt it to fit and slide in the recessed block C, and has at one end a convenient handle.

To the under side of the block-D is secured a suitable iile E, as shown.

To joint a saw that has been placed on the filing-post, the thumb-nut a2 is loosened and the plate B, and with it the blocks C and D, lowered until the file E touches the shortest tooth of the circular saw, when the thumbnut is tightened to hold the plate at the point to which it is adjusted. The saw is then turned, and if there are any long teeth on the saw they are quickly and readily cut down by drawing the lianged block D back and forth by its handle D2 in the stationary recessed block C, when the file E on block D will soon cut a tooth down to the length of the shortest tooth.

From the foregoing description, taken in connection With the accompanying drawings,. 65 the construction, operation, and-advantages A of my new and improved adjustable sawjointer will be readily understood. It will be seen that my saw-jointer is simple, strong, and cheap in construction and very eificient in its operation.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

l. In a saw-jointer, the combination of the recessed block O, adapted to be suspended above a saw, and the flanged sliding block D, having a file secured on its lower side, sub stantially as set forth.

2. In a saw-jointer, the combination of the stationary plate having the threaded bolt and nut, the slotted plate having at its lower end the recessed block, and the ianged sliding block having the file on its lower side, substantially as set forth.

. JOHN F. COLEMAN.

Witnesses:

C.` F. MOORE, D. M. LEONARD. s