US19801A - Crosscut-sawing machine - Google Patents

Description

'UNTTED sTATEs PATENT oFFioE.

GEOl TELFORD, OF PIKE, NEW YORK.

CROSSCUT-SAWING MACHINE.

Specification of Letters Patent No. 19,801, dated March 30, 1858.

To all whom it may concern:

Be it known that I, GEORGE TELFORD, of Pike, in the county of Wyoming and State of New York, have invented a new and Improved Sawing-Machine; and I do hereby declare that the following is a full, clear, and eXact description of the same, reference being had to the annexed drawings, making a part of this speciiication, in which- Figure 1, is a side view of my improvement. Fig. 2, is a front or end view of ditto, the log carriage being bisected vertically as indicated by the line (w), (m), Fig. l.

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

This invention relates to an improvement in that class of sawing machines which are used for sawing logs transversely into suitable lengths for fire wood and other purposes.

The invention consists in t-he peculiar arrangement of the parts as hereinafter described whereby the machine is rendered very compact, readily managed and more efficient in its operation than any of those of usual construction with which I am acquainted.

To enable those skilled in the art to fully understand ,and construct my invention I will proceed to describe it.

A, represents a framing which may be constructed in any proper manner to support the working parts, and of either wood or metal. B, is a shaft placed transversely in said framing at one end, and having a driving pulley (a) at one end and a pinion (o) at the opposite end. C, is a shaft which is also placed in the framing A, and has a toothed wheel D, fitted on one end, the pinion (Z9) of shaft B, gearingA into the wheel D. The wheel D, is very cons1derably larger in diameter than the pinion (b) and one end of a connecting rod E, is attached thereto, near its periphery, the opposite end of said rod being attached to the lower end of an arm F, the upper end of which is hung on a shaft G, placed in the upper part of the framing A, and parallel with the shafts B, C.

H, is a bar one end of which is attached to the lower end of the arm F, by t-he same' pivot or pin that connects Vthe rod E, to said arm. The bar H, passes through a frame I, which is fitted to a vertical post J, so that it may slide up and down the bar H, passing between friction rollers (c) in said frame. To the upper end of the frame I, a -cord K, is attached, said cord passing over a pulley attached to the upper part of the post and its end connected to a lever L, which is pivoted to the post J, at (c). To the front end of the bar H, a saw M, is attached, and to the upper end of the post J, a bar N, is pivoted so that it may swing freely therefrom, the lower end of the bar N, having a small fork (f), attached which fork fits over the back of the saw M, and serves as a guide to the same.

O, is a carriage which runs on ways (9,) (g), and P, is a cylinder which is placed in proper bearings transversely on the ways (g). This cylinder is grooved circumferentially at a point about midway between the ways (g), and said groove is provided with radial spikes (h). The carriage O, has a bar placed transversely on it, said bar being hollowed out at its center to receive the log to be sawed.

The log Q, is placed on the carriage O, and cylinder P, and a chain R, may pass around the log securing the same to the carria-ge. The log rests in the spiked groove in the cylinder P, and the saw M, rests on the log and at right angles with it. Motion is given the shaft C, by any proper means and as the wheel D, rotates a reciprocating motion is given the bar H, through the medium of the rod E, and arm F, the latter serving as a support to the inner end of the bar. The saw M, feeds itself to its work by its own gravity solely, or the front end of the bar H, may be loaded if necessary in order to increase its weight or gravity. When the saw has made its cut, it is elevated by the attendant who draws down the outer end of the lever L, and the log Q, is moved forward by rotating the cylinder P, by means of hand levers or other device until the point for the vsucceeding cut is brought underneath the saw. The saw is then allowed to descend and rest on the log, and the cut made, the operation being repeated until the log is sawed into pieces of the desired length. The swinging bar N, serves as a guide to the saw, and the spiked groove in the cylinder P, serves to feed the log along as the cylinder is rotated.

I would remark that a circular saw A',

may be placed on the shaft G, so that by disconnecting the arm F, said saw may be used at any time when the saw M is not in use.

In consequence of having the bar H, operated by the wheel D, and connecting rod E, arranged relatively with each other as shown, the machine is rendered very compact, and by having the '10g Q, to be sawed resting partially on a cylinder grooved and armed with teeth as described the log is fed to its work by the simplest possible means.

I do not claim attaching a saw to a reciprocating bar which is fitted in or allowed to work through an adjustable frame for the purpose of allowing the saw to be elevated so that the log may be fed to the saw, for this device has been previously used,

ger do I claim the swinging guide bar N;

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is-

1. The bar H, with saw M, attached, the arm F, connecting rod E, and wheel D, when arranged relatively with each other as shown and for the purpose herein set forth.

2. I also claim the bar H, and saw M, 0perated as shown, in combination with the log carri-age O, and cylinder P, grooved and armed with spikes, the whole being arranged to operate substantially as and for the purpose set forth.

GEORGE TELFORD.

Vitnesses:

A. HOPSON, E. FARLEY.

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