US228413A - Drag-sawing machine - Google Patents

Description

S F. STE ELE. v D rag-S awing M aohine.

No. 228,413. Patented June 1,1880.

I l VENTOR Z ATTORNEY WiTNESS S ljnlrn STATES SAMUEL F. STEELE, OF BARABOO, WISCONSIN.

DRAG-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 228,413, dated June 1, 1880. Application filed April 7, 1830. (No model.)

To all whom it may concern Be it known that I, SAMUEL F. STEELE, a citizen of the United States, residing at Bar-aboo, ill the county of Sank and State of Wisconsin, have invented certain new and useful Improvements ill Drag-Sawing Machines; 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 appertains to make and use the same, reference being had to the aocom panyin g drawill gs, and to letters or figures of reference marked thereon, which form a part of this speciflcation, and in which- Figure l is a rear perspective of my improved machine. Fig. 2 is a top plan of the same.

My invention relates to certain new and useful improvements ill the class of drag-sawing machines wherein the saw is reciprocated by the weight and muscular strength of the oper ator occupying a rising and falling seat connected with the operating-lever, whereby said lever is operated by the hand and feet and the weight of the operator when sitting upon the seat.

My invention has for its object the production of a drag-sawing machine in which the whole weight of the operator is adapted to act directly upon the saw, while securing an easy and natural position of the muscles of the operator; and to this end the invention consists in the novel combination and arrangement of parts, all as will be hereinafter fully described, and specifically pointed out in the claims.

To enable others skilled ill the art to make and use my invention, I will now proceed to describe its construction and operation.

Referringto the accompanying drawings, like letters of reference indicate like parts ill the several figures.

Ill the drawings, A A represent the beams forming the frame of the machine, upon which the operating parts are mounted, secured or connected together by the cross-bars a; and supported at the rear end by the legs a a.

B represents the operating-lever, carrying the saw 0 at its lower end, said leverbein g journaled or pivoted on a shaft, 11, mounted in the upper ends of the uprights I) b, secured'to and extending above the beams A A.

D represents a lever, centrally secured to the operating-lever, and through which passes the i shaft 1), upon which said lever is journaled. {The rear end of the lever is connected to the 1 rear end of the rising and falling saddle or seat E through the medium of the connecting rod or bar (I, lever F, having a cross-rod, f, near the center, journaled in boxes or-bearings on top of the beams A A, and the rectangular connecting and seat or saddle supporting bar 0.

The forward end of, the lever D is connected to a forward slotted extension, 0, of the seat or saddle E by means of the upright bars 0 0, ill the upper ends of which said beam is journa led or pivoted.

H H represent treadles journaled in boxes or bearin gs upon or to the beams A A, forward of the uprights I) I), and connected with the rear end of the lever by the right-angular levers I I.

J represents a coiled spring connecting the operating-lever B with the cross-bar a of the beams A A. 4

When desirable to out very fast, I apply a weight to the saw by means of a double coiled spring, L, secured to the bolt Z, connecting the lower end of the operating-lever with the handle of the saw. The loop l, connecting said springs, passes over said handle, and when the spring is wound up by turning said bolt by a common wrench it is held by a ratchet-wheel be given to the saw, which weight is very elastic, and in no way interferes with the clean cut of the saw, which cannot be preserved with a dead weight, thus utilizing force without additional weight.

The arms of the treadles, upon which the feet rest, are shorter than the angular levers connecting said treadles with the rear end of the lever D, which lessens the distance traversed by the feet of the operator. By this arrangement an easy and natural position of the muscles is secured, which more than compensates for the length of the treadles upon which the feet rest.

By the above-described arrangement of the seat or saddle and the mechanism conncctin g it with the lever D, said lever never assumes a perpendicular position while working the saw and pawl, m'm. Thus any desired weight can v on a three-foot stroke. Therefore the leverage is not materially shortened, and consequently every pound of the operators weightis adapted to act directly on the saw.

The weight of an ordinary-sized man, when applied as above described, is more than sufficient to draw the saw backward, in which movement the spring J is drawn to its full tension without any perceptible effort on the part of the operator and its reaction or recoil greatly assists him in transferring his weight to his feet, resting on the treadles, thus utilizing the weight of the operator at the most important point in producing the forward movement to the saw. the springJ can be regulated by a thumb-screw at its lower end.

To operate the machine, the operator seats himself upon the seat or saddle, straddling the frame, with his feet upon the treadles, and grasping the operating-lever with his hands. The weight of the operator upon the seat or saddle,through the connections with both ends of the lever D, vibrates it, which, through the medium of the operating-lever, draws the saw backward, while the forward motion is produced by the operators weight upon treadles, assisted by the recoil of the spring J and the operator pulling on the operatinglever, which produces the reciprocating movement to the saw necessary to cut the log or other object to be sawed.

The above-described arrangement of mechanism, with slight alterations, may be used for various propelling purposes, such as sawing The tension of marble, operating corn-shellers, and various other machines.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the operatin glever B, of the transverse lever D, centrally secured to said le"er B, the rising and falling seat E, having the forward extension, 0, and intermediate mechanism connecting both ends of the seat with said lever D, for operating the levers D B through the medium of the movement of the seat, substantially as herein shown and described.

2. The combination, with the operating-lever B, of the transverse lever D, connected to said lever B, rising and falling seat E, connected to said lever, treadles H H, right-angular levers 1 I, and the recoil-spring J, substantially as and for the purpose herein shown and de scribed.

3. The combination, with the o1')erating-le- "er B and the saw and handle or pitman, of the projecting connecting-bolt l, the adjusta ble double coiled spring L, secured to said bolt, with its connecting-coil lpassing, over the saw handle or pitman, and the ratchet-wheel and pawl m m, substantially as and for the purpose herein shown and described.

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

S. F. STEELE.

\Vitnesses 'M. BENTLY,

B. I. KELsEY.

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