US12424A - Machine for cutting wood into slivers - Google Patents

Description

S. R. SMITH AND E. GOWLES, OF HADLEY, MASSACHUSETTS.

MACHINE FOR CUTTING WOOD INTO SLIVERS.

Specification of Letters Patent No. 12,424, dated February 20, 1855.

Toall whom 'it may cgwern Be it known that we,"SAMUEL R. SMITH and ELIJAH CowLEs, of Hadley, in the county of Hampshire and State of Massachusetts, have invented a new and Improved Machine for Cutting Wood into Narrow Thin Shavings for Upholstery Purposes; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making part of this specification, in which- Figure 1, is a plan or top view of my improved machine. Fig. 2, is a back end view of the same, in elevation. Fig. 3, is aside View of the same, the side of the frame nearest the eye, being removed. Fig. 4, is a View of a portion of the front end of the frame.

Similar letters of reference indicate corresponding'parts in theseveral figures.

vThe nature of our invention consists, lst, in the peculiar means employed for giving the necessary feed motion to the cutters, and 2d in the arrangement,and construction of the cutter head and guide, by which the cutters are made to pass over the stuff to be cut, in a right line.

To enable others skilled in the art to make and use our invention we will proceed to describe its construction and operation.

A, representsthe frame of the machine, constructed in any proper manner to support the wo-rking parts.

B, (Figs. 2 and 3,) represents a verticalr shaft at the back end of the frame, A, said shaft working in a suitable bearing. (a) attached to the frame. The lower end of the shaft, B, wo-rks in a step (b) attached to the upper part of a spring, C. The shaft B, has two pulleys, D,E. D, is a working, and, E, is an idle pulley. The working pulley, D, is attached to a rhollow shaft, F, which fits over the shaft, B, and is secured to it by a feather and groove, so as to allow the shaft, B, to rotate, when the pull ley, D, rotates, and at the same time allow the shaft, B, to be depressed, without depressing the pulley, D. The idle pulley, E, is merely fitted loosely on the hollow shaft, F.

The lower part of the shaft, B, hasa series of grooves or recesses, (c) cut in it,

Aas shown clearly in Figs. 2 and 3, and in these recesses a segment rack, G, gears, (see Fig. 3,) said rack being at the end of a lever, H, ywhich has its fulcrum at To the outer end of the lever, H, there is attached a Weight, I, and also a cord (e) passing over a pulley (f)at the upper part of the frame, A, and having its end secured to a clutch which is on a small shaft,

J, the bearings (h, it) of which are attached to. the back end of the frame, A, (see Figs. 2, 8, and 4,). On the shaft, J, there is a worm wheel, K, which gears into a screw, L, on the hollow shaft, F, of the pulley, D, (see Figs. 3 and 4).

M, is a lever, having its fulcrum at one end of this lever is underneath the spring, C, (see Fig. 3) and the opposite endv is underneath a slide, N, attached to the front end ofthe frame, A, (see Figs. 3 and 4);

O, is a lever having its fulcrum at (j) one end of this lever (the outer end) passes through an upright arm, P, having an inclined or beveled edge as shown at (la) Figs. 2 and 4, and the opposite end is fitted in a notch or underneath a projection (Z) on a plate, Q, attached to the front end of the frame, A, directly above the slide, N, as

clearly shown in Fig. 4. The outer end of the lever, O, is provided with a wire (m) having a loo-p in it through which a belt passes, 'said belt passing around the working pulley, D, and also a driving pulley, R, at the front end of the frame, A, see Fig. 3. A', isa spring which bears upon the lever, O. n Si, is a slide through which the rupright arm, P, passes, (see Figs. 2, 3 and 4). The inner `end ofV this slide is attached to the clutch (g) as clearly shown in Fig. 4.

i T, is a cap which is fitted onk the upper end Iof the shaft, B, andl secured thereon by a screw (0) see Figs. 2 and 3. The cap, T, has a` flat metal plate (p) secured to its upper surface, and the edges or sides of this plate are bent upward as shown in'Fig. 8. U, is a plate fo-rmed precisely similar tothe plate (p) only inverted and placed directly X, is a sliding stock which works on the outer end of one of the bars, V,-one stock only is shown in the drawings, but in practice each bar is4 provided with one. The stock, X, near its outer end is provided with a cutter (t) formed of a chisel slightly inclined from a horizontal position, and a series of cutting points (o) three or more, directly behind it, see Figs. 2 and 3. Near the inner end of the stock, X, there is an arm (fw) which projects downward, and has a slot (m) cut in its end.

Y, is a disk secured on the upper part of the frame, A, and having an upright riin or ledge (y) around it, (see Figs. 1, 2, and

` The disk, Y, is of nearly but not quite circular form, one side being curved or bent, as shown at (a) Fig. 1. The rim or ledge (y) fits in the slot (w) in the lower end of the arm (fw) as shown in Figs. 2 and 3.

Operation: Motion being given the driving pulley, R, the pulley, D, is made to rotate, and also the shaft, B, with the bars V, V. Each bar, V, being provided with a stock, X, and cutter (t) attached to it. The cutters (t) as the bars, V, rotate, pass in a right or straight line over the stu which is placed on the upper part of the frame, A, and represented by (a) see Figs. l and 3. The cutters pass over the stuff i in a straight line owing to the irregular curved portion of the rim or ledge (y) said portion (a) operating or moving the` cutter stock X, in consequence of the arm fitting on or over the rim or ledge The cutters as they pass over the stuff cut thin narrow shavings, the chisel (u) cutting a broad shaving, and the cutters (o) dividing it into narrow ones. The cutters 'are`fed down upon the stuff in the following manner. As the hollow shaft, F, rotates, the screw L, upon it, communicates motion to the worm wheel, K, and the small shaft, J, rotates, and the cord (e) is wound upon one part of the clutch (g)-the weighted end of the lever, H, is consequently raised and the inner end depressed, and as the rack G, gears into the recesses (c) the shaft, B, is gradually depressed and the cutters fed to the stuff, when the cutters have descended a distance equal to the thickness of the stuff the spring C, is depressed suf iciently to cause the inner end of the lever,

M, to act upon the slide, N, and throw the inner end of the lever, O, out from underneat-h the projection (Z) on the plate, Q, and the spring, A, throws the inner end of the lever, O, upward and the uprightarm, P, in moving throws the slide, S, in such manner as to separate or disconnect the clutch (g) and consequently the feed motion ceases, the shaft, B, and lever, H, re-v turning to their original position, by means of the spring, C, and weight, I, the belt (n) by the downward movement of the lever, O, being thrown on the idle pulley, E. The cutters (t) are then moved outward, so as to take another cut by turning the cranks, W. The lever, O, (its under end) placed under the projection (Z) and the operation above described is repeated.

It is necessary that the cutters should pass in a straight line over the stuff in order that the shavings may be cut in the direction of the grain, and not transversely with it; in the latter case the shavings would be brittle, and have no elasticity.

What we claim as new and desire to secure by Letters Patent, is,

l. Giving the necessary feed motion to the cutters by means of the lever, H, with the segment rack, G, attached to one end,

which rack gears into the recesses, (c) cut stuff (a) by means of the rim or ledge (y) on the disk, Y,-said rim or ledge havingria bent or curved portion (e) which in consequence of the arm (w) working upon it communicates the proper motion to the cut-ter stocks, so that the cutters will pass over the stuff in a right or straight line, as herein described.

SAMUEL R. SMITH. ELIJ AH COWLES.

Witnesses:

SAMUEL NASH, MARTYN S. NASH.

which is wound v

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