US215858A - Improvement in drag-sawing machines - Google Patents

Description

J. K. ALT-BBS. Drag-Sawing Machine.

No. 215,858 Patented May 27, 1879.

WITNESSES Wag/24;.

ATTORNEYS.

UNITED STATES PATENT GFFr.

JOSEPH K. ALTERS, OF MAIDEN ROCK, WISCONSIN, ASSIGNOR TO HIMSELF AND JOHN H. BRASINGTON, OF SAME PLACE.

IMPROVEMENT IN DRAG-SAWING MACHINES.

Specification forming part of Letters Patent No. 215,858, dated May 27, 1879; application tiled April 1, 1879. I I

To all whom it may concern:

Be it known that I, J OSEPH K. ALTERS, of Maiden Rock, in the county of Pierce and State of Wisconsin, have invented a new and useful Improvement in Cross Out Saws, of which the following is a specification.

This invention relates to improvents in mechanism for operating thesaws, the object whereof is to enable one man to do the sawing-in a simple and easy manner.

It consists in suspending the saw in a frame and connecting it with a system of levers, whereby the weight of the operator, the pressure of his feet, and the power exerted through his hands are all utilized to give a reciprocating motion to the saw.

In the accompanying drawings, Figure 1 is a longitudinal section of the improvement on line a: 00 of Fig. 2. Fig. 2 is a top plan or view of the same, and Fig. 3 represents the rear support of the frame.

Similar letters of reference indicate corresponding parts. 7

Referring to the drawings, A represents the saw running between two parallel timbers B B, which are connected together at the rear end by an upright, O. This upright is pivoted to a standard, D, rising from the crosspiece a, in which is set a perforated curved plate, a.

A flat spring, I), is attached by its upper end to the upright O, and, extending down between the timbers B, is turned at a right angle and passed through the upright, its point being in line with the perforations in plate a, so as to engage the same. A small lever, 0, between the flat spring and the upright is used to throw the point out of the perforations.

By this arrangement the saw-frame is lev- F F, rising from the timbers B, and, extending upward, is provided with a T-handle, e. Forward of the fulcrum e, at f, in lever E, is fulcrumed a rock-lever, G, composed of two parallel bars united together at the ends. The power end of this rock-lever is provided with a saddle, H, for the operator, while at the op-. posite or working end it is connected by a connecting-bar, g, with a trcadle-lever, H, composed of two parallel bars fulcrumed at the opposite end in the upright G. treadle lever is also connected by a connecting-bar, h, with lever E, by a pivot, 2, back of the fulcrum c.

A guide, I, for the saw lies between the timbers B B at the forward end, and has arms extending back and pivoted to the forward uprights F; and through the ends of timbers B are passed spurs j j, for entering into the log and holding the machine in place.

The operation of the device is as follows The operator sits astride of the saddle H with his feet on the foot-rest k on treadle-lever H, back of lever E, and his hands grasping the T-handle e at the top of lever E. The machine is leveled in the manner heretofore described, and the forward end mounted on the log J, and secured by the spurs j, while the saw is held in the proper position on the log by the guide I. The weight of the operator being disposed forward of the fulcrum 0 tends to throw the lever E back, as does also the power exerted by the hands pushing forward 011 the handle 0, while the pressure of the feet of the operator on treadle -lcver H being expended on lever E, through connecting-bar h on the pivot i. back of the fulcrum e, and the power exerted in drawing the lever back by the hands, throws the saw forward. Thus by the weight of the operator, the pressure of the feet on the treadle lever H, and the power exerted through the handle 0 of lever E, a reciprocating motion is communicated to the saw A, by which it is rapidly and'easily operated.

When the saw has out well down into the log, the scarf can be kept open by a metal wedge, Z, connected to the frame by a chain.

Having thus described my invention, I claim as new and desire to secure by Letters Patcut- 1. As an improvement in cross-cut saws, the

This

lever E, having handle e, pivoted to saw-head d, and fulcru'med in the uprights F of the frame at e, in combination with the rock-lever Gr, fulcrumed in lever E at f, forward of fulcrum e, and the treadle-lever H, fulcrumedin the upright O, and connected with the lever E by connecting-bar it back of fulcrum e, and with the forward end of the rock-lever by the connecting-bar g, whereby areciprocatin g motion can be given to the saw through the weight of the operator, the pressure of his feet on the treadle-lever H, and the power he exerts through his hands on the handle 0 of lever E, substantially as hereinbefore described and set forth.

2. The upright O, at the rear end of the frame B, connecting them together, and provided JOSEPH KESSLER ALTERS.

Witnesses:

GEO. T. HEsLIN, JACOB BUTCHER.

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