US884909A - Saw-setting tool. - Google Patents

Description

YIPATENTBD APR. 14, 1908.

N 884 909. o c. A. DREW.

SAW SETTING 11001,. APPLIQATION FILED MAR B 1907 2 SHEETS-SHEET 1.

Wilma:

0.. WAsHIudmN, a c.

plate detached;

proved saw setting tool are pivotally con- CLAYTON A. DREW, OF EUREKA, CALIFORNIA.

sAw-sncr'rme TOOL.

To all whom it may concern:

Be it known that I, CLAYTON A.-DREW,' a citizen of the United States, residing at Eureka, in the county of Humboldt and State of California, have invented certain new and useful Improvements in Saw-Setting Tools, of which the following is a specification.

This invention contemplates certain new and useful improvements in devices for setting teeth of saws, and the invention has for itsobject an improved construction of hand operated saw setting tool, in the use of which, the operator may at all times see the work, as it 18 being accomplished.

The invention consists in certain constructions and arrangements of the arts that will be hereinafter described and particularly pointed out in the appended claims.

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a perspective view of my improved saw setting tool; Fig. 2 is a top plan view thereof, the handles being broken away; Fig. 3 is a detail erspective view' of the gage Fig. 4 is a side elevation of the tool, with parts in section; Fig. 5 is a detail perspective view of one of the jaws; Fig. 6 is a similar view of the other jaw; and, Fig. 7 is a detail view of the gage arm detached.

Corresponding and like arts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The handle members 1 and 2 of my imnected together referably by a pivot 3 which is rovide with a thumb nut, as shown, and one of said members is provided with a slot 4 receiving the other member, the said two members projecting forwardly of the pivot to provide the two jaws 5 and 6. The handles are preferably pressed apart by means of a spring, as shown.

The jaw 5 is substantially the shape of an arrow or spear head, having converging side walls 7 which meet in a substantially sharp front edge. The jaw 6 is provided with a flat surface 8 adapted to coact with the jaw 5, and the said jaw 6 is formed with an extension 9 beyond the said flat surface extension being formed with a pref 8, said erably Specification of Letters Patent.

Application filed March 6, 1907.

Patented April 14, 1908.

Serial No. 360,912.

upper surface and the flat surface 8 being angularly disposed with respect to each other. The extension 9 is formed at its outer edge with athreaded aperture in which a set screw 11 works.

A gage plate 12 is provided with an upright forked or U- haped portion 13 which em braces the jaw 6, the two members of the fork being located'in registry with the flat surface 8. The gage plate 12 is preferably of sheet metal and is formed with a laterally extending tang 14: preferably struck-up therefrom, said tang being formed with a slot for the reception of the clamping screw 15. This screw works through the slot and into the extension 9 of the jaw 6 as shown. By this means the gage plate 12 may be adjustably held at diflerent longitudinal positions with respect to the surface 8.

16 designates a gage arm which is provided at one end with a longitudinal slot and which is fitted atsuch end within the dove-tail groove 19 formed in one side of the head of the tool. The pivot stud 3 extends through the slot of this end of the arm 16, so as to hold the arm at different adjustments. From its slotted end, the arm extends forwardly, is offset slightly inwardly and thence extends downwardly to produce a downwardly projecting finger free end. By adjusting the arm 16 in the groove 19, the finger may be held at different distances from the surface 10 of the tool. In the. practical use of my improved saw setting tool, the saw to beoperated upon has its blade rested upon theextension 9 with its teeth projecting over on to the flat surface 8 of the jaw 6. so as to impinge against the saw blade and thereby hold the flat surface 8 at the proper angle with respect to the blade according to the depth of set desired. The gage plate 12 is adjusted to the proper position along the flat surface 8 of the jaw 6, so as to lie against the outer ends of the teeth, and the adjustment of this plate is necessary, owing to the different lengths of teeth in the different saws that are to be operated upon.

From the foregoing description, it will be understood that the operator, after the adjustment has been properly made, will place the tool endwise over the toothed edge of the saw blade, and press the handles together so jaw 6 and its flat 17 at its forward The set screw 11 is adjusted.

l flat upper surface 10, and said lastfnamed as to set, say, every other tooth to the desired inclination, and the saw blade is then reversed and the other teeth set to the proper inclination in the opposite direction.

It will be seen that the device is composed of comparatively few and simple parts that will be cheap to manufacture, durable, and eflicient in operation, and that when being used, the operator may see the work at all times, so as to determine at once whether or not the work is being properly done.

Having thus described the invention, what is claimed as new is:

1. A saw setting tool comprising complemental members connected by a pivot pin and forming handles and jaws,-one of said jaws being formed with a fiat face cooperating with the opposite jaw and also with an extension disposed at an angle to the said flat face, and a gage arm provided with a slot adjustably receiving the pivot pin, the said gage arm extending forwardly from its slotted portion and terminating in a downwardly projecting finger for engaging the saw to hold it in position.

2. A saw setting tool comprising complemental members connected by a pivot pin and forming handles and jaws, one of said jaws being formed with a Hat face cooperating with the opposite aw and also with an extension disposed at an angle to the said llat face, the said jaw being also provided at its pivot portion with a dove-tail groove, and a gage arm fitting adjustably within the said dove-tail groove and formed with a slot receiving the pivot pin, the said gage arm extending forwardly from its slotted portion and terminating in a downwardly projecting linger for engaging the saw to hold it in posi- I tion.

In testimony whereof I allix my signature in presence of two witnesses.

CLAYTON A. DREW. [1 s.] Witnesses:

ERNEST OVER, ADAM THOMPSON.

Images