US11708A - Loren j - Google Patents

Description

UNITED sTATEs PATENT oEEioE.

LOREN J. IVICKS, OF NEW YORK, N. Y.

METHOD 0F OPERATING GUIDE-ROLLERS ANI) FEED-CLAMPS IN SAWING-MAGHINES.

Speccaton of Letters Patent No. 11,708, dated September 19, 1854.

To all whom z'zf may concern Be it known that I, LoREN J. Wicks, of the city, county, and State of New York, have invented a new and Improved Sawing-Machine for resawing; 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 specification, in whichW Figure 1, is a side elevation of my improved sawing machine. Fig. 2, is a plan or top view of the same. Fig. 3, is an under view of the guide rollers showing the segment racks and pinions whereby they are adjusted. Fig. 4, is a detached plan or top view of one pair of the feeding clamps.

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

This invention relates to a new and improved sawing machine for re-sawing, and consists in rendering the feed clamps and guide rollers, self adjustable by means of pinions and racks arranged as will be presently shown and described.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A, represents the frame of rectangular forln, and having two uprights (a, a,) between which a saw sash, B, containing a saw, C, vibrates by means of a pitman, D, secured to the lower end of the sash, and a pulley, E, at the lower part of the frame, A, see Fig. 1. The saw sash and saw are of the usual construction. Directly in front of the saw sash, B, there is a framev F, formed of twouprights (29,1%) connected at their upper ends by a cross piece (c) the lower ends of the uprights (b, b) being secured to a cross piece the ends of which are att-ached to sills or plates (e, c) which are hinged or connected by joints (f, to theL top pieces of the frame, A, see Figs. 1, an 2.

G, G, are vert-ical guide rollers secured to the frame, F, by levers or arms, (g, g) the axes of the rollers passing through the outer ends of the arms or levers. The inner ends of the arms or levers are secured to upright shafts (7L, h) which t within the frame, F, the lower ends of the shafts underneath the lower cross piece (d) having arms (2', 2') attached to them at the ends of which arms are segment racks (j, j) see Fig. 3.

H, is a shaft underneath the cross piece (ci) and sills or plates, (e, e)4 said shaft having its bearings attached to the sills or plates (e, e). Upon this shaft are `the pinions, (la, 7c) which gear into the segment racks (j, j) see Fig. 3. One-of the pinions (j) is secured to the shaft I-I, by a screw nut (Z) so that said pinion may be loosened when desired and be, allowed to turn independent of the shaft, H.

I, is a pulley at one end of the shaft, H, said pulley having a weight, J, attached to it as shown in Fig. 1.

The guide rollers are placed one at each side of the saw and near its toothed edge.

K, K, are ways on the upper part of the frame A, between which ways two beds or plates, L, L, fit.

M, is a toothed wheel upon a shaft, N, which is at one end of the frame, A. This toothed wheel gears into a pinion, O, hung on a shaft, P, said shaft also having a cone of pulleys (m) upon it, around which a belt (n) passes, said belt also passing around a cone of pulleys, Q, on a shaft (g2-which has a pulley (o) at one end, said pulley (o) having a belt (79) which passes around the pulley (0) and the shaft (1 of the crank pulley E. On the shaft, P, are hung'two bent levers, R, R, the lower arms of which fit in irregular circular grooves (r) in the sides of the toothed wheel, M, see Fig. 1,-the groove in one side of the wheel being in a reverse position to that in the opposite side. The roove nearest the eye is shown in black, an the groove in the opposite side of the wheel is shown by red dotted lines. The upper arms of the levers, R, are connected by rods (t, t) to the beds or plates, L, L, as shown by the dotted lines in Fig. 1.

On the upper surface of each bed or plate, L, there are two feeding clamps (u, u) of eccentric form and attached to small shafts (e, o) which pass through the beds or plates,

'L, and have pinions at their lower ends as shown by dotted lines in Fig. 4, The pinions (er) gear into racks (w, ae) one to each bed or plate. See Figs. 2, and 4, and to each rack a cord (y) and weight (e) is attached. See Figs. 1 and 2 rIhe board or piece of timber to be resawed is placed between the two pairs of clamps (u) and motion being given the saw, the two pairs of clamps, move reciprocally backward and forward, the two pairs approaching and then receding from' each other, one pair onl bindingagainst the board or piece of tim er at a time, and

during its forward motion and feeding the board to the saw, the clamps keep the board This is owing to the connection between each pair of clamps, by the rack and 'pinions which form a connection between the two clamps of each pair and insure an equal bearing on each side of the board or timber. The guide rollers, G, G, also bear equally each side of the board for the saine reason. The weight, J, causing the rollers to bear against the sides of the board.

In case a piece` of stuff is to be divided or cut into three or more' parts of equal thicknesses, the clamps at one side are thrown a little farther out as shown by the red lines in Fig. 4,-one of each pair of clamps being made adjustable by means 0f a nut (a) one of the guide rollers is also thrown outward in a corresponding degree, see red lines Fig. 3, by loosening one of the pinions (7c) by means of the screw nut By Vthrowing the guide roller and clamps outward the center of the board will ybe thrown out of line with. the teeth of the saw, and the board will consequently be sawed into the desired number of parts.

By having the frame, I", secured by joints or hinges to the frame, A, the rollers may be thrown back from the saw, C, see red lines Fig. l, and thus allow the saw to be filed without taking it from the saw sash.

The feeding lclamps (10),*(10'), in consequence of thel grooves n the side of the wheel, M, do not both change their movement at the same time. One moves a short distance before the other, so that the board to be sawed, will have no cessation of movement upon the return motion of the clamps.

I do not cla-im the form of the feeding clamps, nor operating them by an eccentric, for they have been previously used and operated as herein shown-'neitherl do I claim the guide rollers, fory they are in common use; but l f What I do claim as new and desire to secure by Letters Patent, is,

Connecting the two clamps, (u, u) of each pair together by means of the racks, (w, and pinions as herein shown, one clamp of each pair being made adjust-able, and connecting the guide rollers, G, G, together by kmeans .of the segment racks (j, j) and pinions (la, Ze) the rollers, racks, and pinions being secured or attached to a movable or jointed frame, F, substantially as shown.

' LoREN J. wiens.

Witnesses: y.

J. W. 000MB, O. D. MUNN.

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