US441100A - Saw-set - Google Patents

Description

0'. HUNTSMAN.

SAW SET.

(No Model.)

No. 441,100. PatentedNov. 18; 1890.

UNITED STAT S PATENT OFFICE.

CALVIN IIUNTSMAN, OF CHICAGO, ILLINOIS.

A SAW-SET.

SPECIFICATION forming part of Letters Patent No. 441,100, dated November 18, 1890 Application filed December 6, 1889. Serial No. 332,834. (No model.)

To aZZ whom it may concern.-

Be it known that I,.CALVIN H UNTSMAN, a citizen of the United States, residing in Ohicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Saw-Sets, of which the fol lowing is a specification.

My invention relates to saw-sets such as those in which the hammer is subject to a bent spring arranged with one of its ends in engagementwith the heel of the hammer and its other end in engagement with a notched portion of the frame, upon which the hammer is pivotally supported and operated by a swinging hand-lever having a stud for alternately engaging stops or abutments formed at the ends of a notch in the heel of the hammer, whereby the hammer can by a back pull on the lever be raised back of the dead-center, so that it will automatically lock in a raised position, from which it can be released by such forward push on the lever as will move the hammer forward of the dead-point.

The object of my invention is to provide improved means both for bringing the 11ammer into such locked position and for throwing it forward of the dead-point; to avoid any necessity for hand manipulation of the lever; to avoid making the hammer and lever in separate pieces; to provide improved means for adjusting the spring, and to provide means for holding various sizes of circular saws.

To the attainment of the foregoing and other useful ends my invention consists in matters hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 represents in perspective a saw-set embodying my invention, a portion of the rod which connects the foot-piece with the lever being brokenaway for convenience of illustration. Fig. 2 is a vertical central section taken longitudinally through the saw-set. Fig. 3 is a plan view of the saw-set and illustratesacircular saw held by its allotted jointed support. Fig. 4: is a side elevation of the saw-set with a circular saw held by said support.

The base A is adapted for attachment to a bench or standard, as may be desired, and is provided with lugs a, between which I pivot the hammer-lever B. Said base is also provided with an anvil a, arranged under the hammer. The hammer-lever B is provided at its forward end with the hammer-head b,

and is at its opposite end connected with a rod or pitman O. The rod 0 is at its lower end provided with a foot-piece or foot-holder 0', consisting of a loop, into which a portion of the foot of the operator can be inserted.

The hammer-lever is at its rear end provided with a laterally-proj eeting boss I), which provides a bearing for a stud or screw D, and the foot-piece rod 0 is provided with a slot 0, in which said stud or screw engages, so as to provide a pivotal and limited sliding eonnee- 6 5 tion or lost motion between the foot-piece rod and the hammer-lever. The bent spring E has its upper end arranged to engage in a notch, which is formed in the under side of the hammer-lever at a point back of the ham- 7o mer-lever pivot F, as indicated in dotted lines in Fig. 2. The lower end of the spring engages the upper end of a screw G, which has its bearing in the base A at a point below the point whereat the hammer is pivoted. This 7 5 screw can be readily adjusted for adjusting the spring, and since the spring is made quite strong it can in this way be adjusted with far more case than by forcing together the two prongs by hand, so as to permit the lower end of the spring to be moved along a rack, as practiced prior to my invention. It will also be seen that the hammer-head and lever are in one piece, and that the rear end of said 1ever projects horizontally back from the pivot on the hammer-lever as will swing it forward 9 g of the dead-point, and thus allow the spring .to operate the hammer-lever, and thereby bring the hammer upon the work.

The adjustable holder H for circular saws is attached to the base A by a pivot h, which rises from a section h of said support. The

section It has also a fixed stud or pivot k upon which another section 7&3 is adj ustably held. To permit the outer section h of the jointed support to be raised and lowered and also swung independently of the section h, it is sleeved upon the stud k and held thereon by a set-screw h. jointed adjustable support II can be readily adjusted in conformity with the diameter of the circular saw that is to be operated upon. The outer section of the jointed support is also provided with a shouldered stud h which'can be received in the center opening of the saw. This stud k is adj ustably held by a set-screw h in a recess in the holder, so that it can be raised for the purpose of tilting the saw, which will rest on the shoulder h of said stud. When thus holding a circular saw, the gage-screws I, which are employed for other saws, can be screwed down out of the way.

What I claim as my invention is- 1. In a saw-set, the combination, with a'pivoted hammer-lever B, provided at its forward end with a hammer-head, and aspring E, engaging said hammer-lever adjacent to its By such arrangement the of the hammer-lever, and a foot-piece upon said rod 0, substantially as described.

2. In a saw-set, the jointed adjustable circular-saw holder l-l, provided near its outer end with an upright stud h for holding the saw, said stud being longitudinally adjustable upon the saw-holder, whereby the saw can be tilted, substantially as set forth.

3. In a saw-set, a circular-saw holder comprising a pivoted section h, a section If, pivotally secured to said section h and vertically adjustable with relation thereto, and a longitudinally adjustable upright stud k upon said section 71 substantially as set forth.

CALVIN HUNTSMAN.

\Vitnesses:

CHAS. G. PAGE, ANNIE L. COATES.

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