US282943A - Hand-po wer log-saw - Google Patents

Description

(No Model.)

H. G. YERBY & E. B. STILSON.

HAND POWER LOG SAW.

Patented Aug. '7, 188 3.

N. PETERS. Phuwmm nphr. Washington. D.C.

UNITED STATES PATENT] 3OFFICEQ h A HENRY cvEEEY AND EDWAED E. STILSON, OF LEsLIE, AssIeNoEs or oNE- THIRD TO WESLEY s. PALMER, E LANsINe, AND JAMEs sAYEEs AND HEN Y sAYE s, oE LESLIE, MICHIGAN. A

HAND-POWER LOG-SAW. A

SPECIFICATION forming part of Letters P atent No. 282,943, dated August 7, 1883.

Application filed May 4, 1883. (No model.)

1'0 aZZ whom it may concern 1 Be it known that we, HENRY O. YERBY and EDWARD B. STILSON, of Leslie, in the county of Ingham and State of 'Michigan, have in- 5 vented certain new and useful Improvements in Hand-Power Log-Saws and we do hereby declare that the following is a full, clear, and exact descriptionof the invention, which will enable others skilled in the art to which it ap IO pertains to. make and use the same, reference beinghadtotheaccompanying drawings,which form apart of this specification, and in which-- Figure 1 is a perspective view of our improved hand-power saw. Fig. 2is a side view of the same, and Fig. 3 is an end view.

Similar letters of reference indicate correspondingparts in all the figures. Our invention has relation to hand-power crosscut-saws; and it consists in the improved construction and combination of parts of a frame adapted to be fastened upon a log and to guide and assist indrawing the one end of a crosscut-saw, as hereinafter more fully de scribed and claimed.

In the accompanying drawings, the letters A and B indicate two parallel upright bars, adj ustably fastened to a cross-bar, O, by means of sliding sleeves D,consisting of two sleeves fastened together, crossing each other at right i i o angles, through whichthe uprights'and crossbar pass, and may be adjusted by meansof setserewsE. Two dogs, F, slide in similar cross-sleeves,G,upon the uprights, and may be adjusted vertically upon the same and hori- 5 zontally in the sleeves by means of set-screws H. A dog, 1, slides in, a similar sleeve, J

v which slides and turns upon the cross-bar O, and thesethree dogs serve to secure the uprights and the cross-bar, togetherwith the sev- 0 eral saw guiding and operating parts hereinafter described, which arefastened to the crossbar upon the log. Two parallel guide-bars, K, extend horizontally from one end of the cross-bar, and are connected at their outer r5 ends, and two uprights, L, project from the middle of the two guides, and are connectedat their upper ends by means of a cross-piece,

M. These uprights are supported by means of two inclined brace-rods, N, extending from the ends of the cross;piece.N downto the outer ends of the guides, and by an L-shaped rod, 0, fastened with the end of its horizontal portion to the cross-piece M, and with the lower end of its vertical portion to the cross-piece 0, between the inner ends of the guides. Two sleeves, P, slide upon the uprights L, and are connected by a short rod, Q, upon which alever, R, is pivoted near its upper end. The saw E, which is a cro'sscut-saw of any desirable construction, is hinged to the lower end of this lever at one end, the handle at the said end being removed, anda cord, T, is fastened to an eye upon the lower end of the lever, and passes upward over apulley, U, upon 'the end of the cross-piece M, and down to a forked catch, V, upon the cross-bar 0, near cord maybe adjusted, that end of the cord bewill be held by the said catch when the rope is inserted into the same. A spiral spring, X, is fastened, by means of a hook, Y, upon the upper end of the lever It, to the same, the said-hook engaging an eye in the one end of the said spring, while the other end of the spiral spring is fastened to a pulley, a, which rolls upon the outside of the vertical portion of rod 0.

- Upon the catch V is fastened a pending means of the cord, which may be adjusted in the catch, holding the saw at any desired height, the sleeves sliding upon the uprights L, allowing the lever B and the saw to be raised, and the spiral spring will slide with its pulley at the same height as the end of the lethe inner ends of the guide-bars, where the.

hook, Z, upon which the saw may be suspended ing provided with a series of knots, W, which I ver, and will assist, when the saw has been drawn toward the operator, to draw it to the other side, thus making it possible to use a crosscutsaw instead of a drag-saw, and as the sawing progresses the operator may lower the saw the distance of one knot upon the cord at the time and cut the log to the ground.

By having the uprights sliding upon the crossbar G and the dogs sliding upon the uprights, the device may be adjusted to suit any size of log, and may cut the log to the last piece, even if the log is cut into very short pieces, by simply moving the uprights closer together.

Having thus described our invention, we claim and desire to secure by Letters Patent of the United States 1. In a log-sawing machine, the combination of two parellel uprights, having their upper ends sliding adjustably in sleeves, which slide adjustably upon a cross-bar whichlsupports the sawing mechanism, and bearing with their lower ends against the side of the log to be sawed, two dogs sliding adjustably with their straight portions'in sleeves which slide adjustably upon the uprights, and adapted to bite into the upper side of the log'with their downturned ends, and a dog sliding adjustably in a sleeve hinged and sliding upon the crossbar, and biting in the upper side of the log beyond the place in whichth-e sliding dogs bite, as and for the purpose shown and set forth.

. 2. The combination, in a log-sawing machine, of two horizontal guide.bars having means for being supported above a log 5 two uprights fastened upon the middle of the guideend of *a saw hinged to its lower end and piv oted upon the rod connecting the sleeves near its upper end; a spiral spring fastened at one end to the upper end of the saw-lever and having a grooved pulley attached at its other end, traveling upon the vertical portion of the rectangularly-bent rod; a cord attached at its end to the lower end of the saw-lever, passing over a pulley at the top of the frame, and engaging with its knotted end a bifurcated catch upon the supporting-frame, and a saw hinged at one end to the lower end of the saw-lever and having a handle at its other end, as and for the purpose shown and set forth.

3. Asan improvement in hand-power logsawing machines, the combination and arrangement, as described, of the uprights A B, sliding sleeves D, crossbar 0, dogs F, sliding crosssleeves G, hinged dog I, guide-bars K, uprights L, cross-piece M, brace-rods N, rod 0, sliding sleeves P, rod Q, lever R, spring X, pulley a, knotted cord T, pulley U, catch V, and saw S, all constructed to operate as and for the purpose shown and set forth.

In testimony that we claim the foregoing as our own we have hereunto affixed our signatures in presence of two witnesses.

HENRY O. YERBY.

EDWARD B. STILSON.

WVitnesses:

H. E. ANDREWS, W. W. PEIRSON.

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