US121144A - Improvement in sawing-machsnes - Google Patents

Description

WILLIAM M. WRIGHT.

Improvement in Sawing Machines.

www i l @EN MVM UNITED STATES PATENT @einen WILLIAM M. WRIGHT, OF GALESBURG, ILLINOIS.

IMPROVEMENT IN SAWING-MACHlNES.

To all whom t may concern:

Be it known that I, WILLIAM M. WRIGHT, of the city of Galesburg, inthe county of Knox and in the State of Illinois, have invented an Improvement in Sawing-Machines 5 and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawing making a part of this specification, in which like lettters of reference refer to like parts, and in which- Figurel represents a longitudinal elevation, the side of frame A being removed to show bar b,- Fig. 2, a plan of the same; Fig. 3, front view of same; Fig. 4, front elevation of saw-sash C; Fig. 5, horizontal section of same through the center, at the dotted line a a, Fig. 4.

This invention consists in mounting an ordinary cross-cut saw, having the usual bow above it, in the slot of a saw-sash or support, which latter is in turn mounted on a second sash with a vertical -slot therein by means of an adjustable pivot or fastening. This latter sash is attached to the end of a horizontal connecting-rod resting .in a bearing, and at the other end resting in a horizontal slide oscillated by a pitman-rod and proper motor. A brace or feed-frame passes from the saw-bow to the supporting-frame of the machine. 1

A represents a square frame or support for the horizontal oscillating bar b, its pitman-rod c', and necessary gearing to work the bar and saw, and the slides d d; also, the horizontal cross-bar f, with its supports e e and sockets g g on either side of the frame A. B is the first or vertical sash, a semicircular frame, attached, by a pin, h, through a lug at its back part, to the end ofthe oscillating bar b. This sash presents in front a vertical face about three feet in length and two or three inches in width, which face is divided lengthwise by a vertical'slot similar to that shown at Ic in Figs. 4 and 5. C is the second sash, of

' the same shape and size as B, with the slot la in its face, in which the heel of the saw D slides down as fast as the saw does its work. (See Figs. 4 and 5.) It is adjustable at any required angle (carrying with it the saw) by means of the adjustingibolt andnut in its bow, which bolt passes through the slot 1o in the sash B, and confines the sash C, to its place. Different working positions of this sash and'saw are shown by the dotted lines in Fig. l, at C D'; at Fig. 2, C D,

and at Fig. 3, C 0. D is the saw, the blade being about iive feet in length, With a bow-back carrying a longitudinal horizontal slot, m, in which works a bolt or pin, o, which conines thereto the slide n, in the upper part of which is pivoted a tubular socket, q, which receives the end of the feed-frame or brace E, to which it is elastically connected by the spiral spring s. The heel of the saw is coniined within the slot k of the sash C by means of the blocks l l attached to the heel on either side of the slot, the saw, of course, being always in the plane of the sash C. E, a feed-frame or brace for the saw, running from the sliding socket q in the top of the sawbow to the horizontal cross-barj', on which it is pivoted by means of the vertical eyes thereon and a movable pin, a, movable on account of the dispensing with the said frame when the saw is set at other positions than vertical. This frame is divided longitudinally, so as to pass the sash C as the saw falls.

The operation of this device is as follows: In making a vertical cross-cut the saw is adjusted (with its sash) as shown in Fig. 1, the sash being placed in such a manner, either higher or lower, by means of the bolt t', as to bring the saw to the proper level or commencement of the desired cut. The bar b being now set in motion carries its attached sash B, the sash C, and saw D to and fro. The saw, as it cuts downward, is allowed to pass down the slot lf ofthe sash C, and when the heel of the same reaches the bottom of said slot the motion is stopped, and the sash C lowered by means ofthe adjusting-bolt t', to allow the saw to complete the out, if a'- deep one. During this time the feed-frameE steadies the saw, allowing the bow of the latter to freely pass through the slide n, to which the said frame E isattached, the end of the latter having a slight play in the socket q of said slide ln. In making cuts at other angles from perpendicular it will be seen that all that is necessary for this purpose will be to remove the feed-frame E by extracting the pins a, and p at either end of the frame E and adjust the saw to the required angle by loosening the bolt z', which connects the sashes, and adjusting the sash C to the desired inclination. The saw, in this case, is steadied by the hand of the operator, who holds the saw to its work by means of the handle r on top of the saw-bow.

What I claim as my invention is- 1. The vertical saw-sash B, having a vertical slot, in combination with the adjustable saw-sash G, vertical slot k, and adjustable fastening i, substantially as for the purposes described.

2. The combination of the sash B and G With the saw D and its blocks ll, substantially as and for the purposes described.

3. The saw D, When constructed With the blocks l l, the slot m, the slide n, pivoted socket q, in combination with the spring s and feed-frame E With its pivot a and cross-bar f e e, substantially as described.

4. In combination with the sash B, the oscillating bar b, slides d d, pitman-rod c', and frame A, substantially as and for the purposes set forth.

In testimony that I claim the foregoing crosscut sawing-machine I have hereunto set my hand this 12th day of September, A. D. 1871.

WILLIAM M. WRIGHT.

JAMES M. MoRsE. (130)

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