US392542A - Saw-set - Google Patents

Description

(No Model.)

B. GURTISS.

SAW SET.

No. 392,542. Patented Nov. 6-, 1888.

u-Lilhogmphcr, Washing UNITED STATES PATENT @rricE,

ENOS OURTISS, OF FINDLAY, OHIO.

SAW-SET.

SPECIFICATION forming part of Letters Patent No. 392,542, dated November 6, 1888. Application filed August 20, 1888. Serial No. 283,218. (No model.)

To aZZ whom it may concern:

Be it known that I, Enos GURTISS, of Findlay, in the county of Hancock and State of Ohio, have invented certain new and useful Improvements in Saw-Sets; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings,whicl1 form part of this specification.

My invention relates to an improvement in saw-sets; and it consists in the combination of a stationary handle, a spring-actuated hammer which is placed thereon, and a springactuated handle which is pivoted upon the stationary handle, and which is provided with a spring-catch for engaging with the end of the handle and operating it, as will be more fully described hereinafter.

The object of my invention is to set the teeth of a saw by means of a spring-actuated hammer, which, when moved into a certain position, flies back and sets the tooth byasingle blow, thus enabling the teeth to be set rapidly and each tooth to receive exactly the same amount of set.

Figures 1 and 2 are side elevations of a sawsct embodying my invention, the hammer being shown in different positions.

A represents the stationary handle, upon which the other parts are placed, and which will be preferably shaped as shown. The free end of this handle has a set-screw, B, passing through it, so as to regulate the angle at which the flat set portion 0 of the handle shall stand to the saw. Also, rigidly secured to this free end of the handle is the fiat spring 1), which is made sufficiently strong to operate the hammer G, which is also pivoted upon the handle A, and to which the free end of the spring is connected, so as to give a suflici'ently powerful blow to bend the tooth of the saw. This hammer is preferably made of the shape shown, and has a flange, H, formed upon its lower edge for striking against the tooth of the saw, and through the outer corner is formed a slot, I, in which the free end of the spring catches for the purpose of returning the hammer to position when it is left free to move. In the inner endof the hammer is formed a notch, J, in which the spring-actuated catch L catches, for the purpose of operating the hammer when the two handles A and N are forced together. This catch L, of the shape shown, is placed in a recess in the inner end of the movable handle, and is kept forced constantly outward by means of a spring placed in the recess, so that the outer end of the catch will always engage with the notch when left free to so do. The outer end of the catch is made slightly rounding, and is cut away at one of its corners, so as to form a sharp projecting edge, which catches in the recess in the end of the hammer. As the outer end of the movable handle is closed upon the stationary one, the catch causes the hammer to turn upon its pivot against the pressure of the spring and forces the flange away from the edge of the stationary handle. After the hammer has been moved a certain distance the catch slips out of the notch in the shorter end of the handle, and then the spring returns the hammer to position with great force, causing the flange to strike against the side of the saw-tooth, so as to set it. The blow of the hammer is always uniform, and hence every tooth of the saw will receive exactly the same set.

The great advantage of the construction here shown consists in the rapidity with which my saw-set can be used. It is only necessary to press the movable handle, so as to move the hammer, to enable the teeth to be introduced between the edge of the stationary handle and the flange, and then continue the closing movement of the handle until the hammer is dropped, when the operator moves on to the next tooth. No skill or practice is required in using this saw --set, and hence any one can use it. The parts are few, simple, and not liable to get out of order, as the movable parts consist of only the handle, the catch, the hammer, and two flat springs.

Having thus described my invention, I claim- The combination of the stationary handle, the set-screw for regulating the set of the teeth,

the movable handle pivoted upon the station- In testimony whereof I affix my signature in ary one, the spring-actuated catch connected presence of two witnesses. to the movable handle the hammer rovided with a flange for setting the teeth, an d a notch ENOS OURTISS' in which the catch engages, and the flat spring WVitnesses:

for operating the hammer, substantially as de- H. H. BARBER,

scribed. JNO. SHERIDAN.

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