US43431A - Improvement in sawing-machines - Google Patents

Description

FFICE..

IV. M. SALMON, OF EDWARDSBURG, MICHIGAN.

IMPROVEMENT IN SAWlNG-MACHINES.

Specification forming part of Letters Patent No. 43,431, dated July 5, 1864.

iication, in which- Figure l is a side view of my invention partly in section, as indicated by the line x x, Fig. 2; Fig. 2, aplan or top view of the same.

Similar letters of reference indicate corresponding parts in the two figures.

This'invention relates to a new and iint proved machine for sawing logs into blocks of any suitable lengths for fuel and other pur poses.

The invention consists in a novel and iinproved arrangement for operating or driving the saw, and also in an improved feed lnechanism for feeding the log underneath the saw, as hereinafter set forth, whereby a very simple and efficient machine is obtained for the pur. pose specified, and one which may be manipulated with great facility or little labor on the part of the attendant.

A represents a framing, which may be constructed in any proper manner, to supportthe working parts ofthe machine. Bis a driving= shaft placed horizontally in the framing, and having a crank-wheel, G, atone end of it, to which a pitman, l), is attached. The outer end of the pitman l) is connected to a slide, E, which is fitted on a guide, F, attached to a bar FX, the latter being secured by a pivotbolt, a, to an upright, b, on the framing A. The pivot-bolt a is near the inner end of the bar F, and to the outer end of the latter there is attached a head, G, which is h'tted between nprightcurved guides c c, the latter being curved so as to form parts of circles of which the pivot-bolt a is the center.

H is the saw, attached to one end of a bar, I, which passes loosely through the head G, and is connected' at its opposite end to the slide E. The head G is Vconnected by a strap, J, to a shaft, K, placed in the upper parts of the guides c c, and havin g a ratchet, d, at one end ofit and a crank, L.

M is a pawl attached to one 0f the guides c, to engage with the ratchet cl.

N is a block through which the saw H works, said block being fitted between vertical guides e e.

On the driving shaftB thereis keyed abevelpinion, NX, which gearsinto a bevel'wheel, O, on a shalt, l), placed longitudinally in the framing A, and having a cross head, Q, on its outer end.

R is a yoke which slides loosely on the outer end of the shaft P, and is permanently attached to one end of ashaft, S, which is inline with the shaft I). The opposite end of the shaft S is provided with a yoke, RX., which is titted loosely on a shaft, T, and engages with a cross-head, U, thereon. The shat't S is connected to a slide, V, which is operated by a lever, W, attached t0 the framing A. The shaft T has a chain, X, connected to it, and this chain is attached to the log to he sawed, which has a transverse position underneath the saw H. f.

From the above description it will be seen that when the shaft B is rotated a reciprocat ing motion will be imparted to the saw H, and the latter allowed to feed itself to its work by its own gravity, and it will further be seen that the saw will work perfectly free, owing to the arrangement of the pivoted bar FX, sliding bar I, and head G. The saw H may be elevated from the log at any tiineby turning the shaft K, and held in an elevated position by means ofthe pawl M and ratchet d. The shaft IJ always rotates with the drivingshaft B, but the shaft S is only rotated when its yoke R is brought in contact with the cross head Q on shaft P, which is done by sliding` sha-ft S through the medium of 'lever XV. When the shaft S is rotated, motion is coin- -municated to the shaft T, as T and S are always connected, the cross-head U never being free from the yoke RX.

In order to feed the log` along underneath the saw, the operator or attendant by actuating the lever W slides the shaft S, and throws the yoke It, in connection with the crocs-head Q, on shaft P, and motion is thereby communicated to shaft T, andthe log moved along the desired distance under the saw, the latter having been previously elevated. When the log has been moved the requisite distance, the

yoke R is thrown out of gear with the cross- ]:end Q, and the pawl M released 0r thrown out from the ratchet d, s0 that the smv may drop and rest upon the 10g.

Having thus described my invention, What I claim as new, and desire t0 secure by Letters Patent, is

The sawing-machine above described, consisting of the pitman D, slide E, pivoted bar F, connecting-bar I, head G, saw H, and feeding apparatus P T S R Q Va11arrenged and operating substantially as specified.

WM. M. SALMON. Witnesses:

H. H. HEWITT, DETHIC HEWITT.

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