US278828A - smith - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. 'S. H. SMITH.

ART 0R PROCESS 0F CUTTING ARTICLES FROM WOOD.

Patented June 5 1 IIlIIIIIlIIIII WITNESSES ATTORNEYS N4 PETERS. Pnolo-Lhhugnpher. Washin ton. D.C.

v (No Model.) 2 eeeeeeeeeeee 2.

S. E. SMITH.

ART 0 RRRRR ESS O GGGGGGGGGGGGGGGGGGGGGGG D. No. 278,828.. Patented June 5,1883.

NITED STATES PATENT FFlCE SETH H. SMITH, OF DELTA, OHIO, ASSIGNOR TO THE SMITH MANUFAOTUR IXG COMPANY, OF SAME PLACE.

ART OR PROCESS OF CUTTING ARTICLES FROM WOOD.

SPECIFICATION forming part of Letters Patent No. 278,828, dated June 5, 1883.

Application filed January 31, was. (No model.)

'0 aZZ whom it may concern:

Be it known that I, H. SMITH, a citizen of the United States, residing at- Delta, in the county of Fulton and State of Ohio, have invented a new and useful Art or Process of Cutting Articles from \Vood, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to animproved art or method of cutting continuously from a block of wood concave-convex or curved articles, such as thin plates or dishes suitable for gro cers packages and for other purposes; and my invention consists in the improved method of cutting the said articles continuously in such a manner that they shall all be of exactlythe same size and shape, and with smooth level edges, so that no finishing process shall be nee essa-ry in order to make them ready for the market, this being accomplished by first cutting a properlyshapedshell from the face of a block of wood by a single pass of a rapidly revolving knife having both ends secured to the shaft or axis on which it revolves in front of the face of the block, and next facing off the block by means of a straight knife or cutter, which is secured at an angle to and re volves with a shaft located in a line with the line of feed, as will be liercinaiterfully de scribed, and particularly pointed out in. the claims.

. In the drawings hereto annexed, Figure 1 is a perspective view ofa plate or dish cut by my improved process. Fig. 2 is a longitudinal vertical sectional view of the same. Fig. 3 is a vertical transverse sectional view on the line a: m in 2. Fi 4 is a perspective view of a block of wood from which one or more of my improved plates or dishes have been cut. Fig. 5 is alongitudinalvertical sectional view of the said block with lines indicating the progress of cutting, and Fig. 6 is a plan view of one of the facings or waste-pieces.

The same letters refer to the same parts in all the figures of the drawings.

In carrying out my invention it is my purpose to avail myself of a machine embodying in its construct-ion a bent or curved knife mounted upon a revolving shaft, by means of which the article is cut or sliced from the end of the block, and a straight knife mounted ,upon a revolving shaft at an angle to the first one, for facing off the block. It will be widerstood from this that the plates, dishes, or other articles cut from the block will be true segmental in cross-section, segments of a circle the center of which is the center of the shaft carryingtthe cutting-knife, while in longitudinal section their shape will be regulated by that of the cutting-knife. Now, if a block of wood were fed eoutinuouslyto a revolving cutting-knife arranged as described, without in termittingly facing off the block, the knife would eventually begin cutting at the edge of the block, thus being likely to split or sliver the edges of the articles, and under all circumstances cutting the edges so thin and uneven that each plate, dish, or other article would require to be faced or finished off before it would be marketable. By my invention these objections are overcome, as I shall now proceed more fully to describe.

A in thedrawings represents a block of wood from which my improved plates or dishes are cut. The said block is so prepared that the articles to be cut therefrom shall be cut across the grain of the wood in order to insure the necessary strength and stability. Suitable mechanism is to be provided for feeding the said block to the knives or cutters, the said feed mechanism being so constructed and adjusted in relation to the knives or cutters and the latter in relation to each other that the -feed" shall take place intermittingly after the cutting knife completes its passageacross the face of the block and before the facing-knife reaches the edge of the same, the feed being of course equal to the thickness of the plate or dish to be out.

To illustrate the operation with reference to the drawings, let it be supposed that one or more plates have already been cut from the face of a block such as shown at A in Figs. at and 5 of the drawings. This leaves the block with a cavity, B, in its otherwise smooth and level face 0. The'cutting knife by its first revolution, the plane of which is indicated by the line D, shaves off a concavo-convex dish, E. The block is thereupon fed forward the thickness of a dish, when the facing-knife, in

its turn, takes from the face of it a thin shaving or facing. (Shown at F in Fig. 6 of the drawings.) This leaves the face of the block level and smooth, as before, so that the cutting-knife, following the facing-knife, will cut from the face of the block another dish E, the line followed by the knife being indicated by letter D. The feed is then repeated, so that the facingknife, following on the line G, will cut off an other shaving F, and so on until the material has become exhausted.

It will be seen that by thus alternately cutting and facing off the block the dishes are all cut with smooth level edges, whereas if the facing off were omitted the edges would be thin and ragged, as indicated by the dotted continuations of the curved lines. Moreover, the dishes will be of exactly the same size and shape, as will be clearly seen by reference to the drawings. The waste of material is hardly appreciable, and practically amounts to nothing more than the corners of the block, which must be removed in order to form round or oblong dishes. By cutting from the face'of the block instead of from the top edge, the cutting-knife is enabled to get a good hold without danger of splintering or slivering, as it would be otherwise liable to do, especially in cutting thin articles, such as those hereinbefore mentioned.

By the process herein described wooden plates, dishes, and other like articles may be manufactured in a most excellent manner and at a trifling cost.

I claim as my invention and desire to secure by Letters Patent of the United States- 1. The herein-described art or method of cutting concavo-convex wooden articles or shells continuously from a block, which consists in cutting said shells front the face of the block by a single pass of a rapidly-revolving knife having both ends secured to the shaft or axis on which it revolves in front of the face of the block, as set forth.

,2. In the art of cutting concavo convex wooden aiticles or shells continuously from a block, the herein-described process of facing off the said block by means of a straight knife or cutter which is secured at an angle to and revolves with a shaft located in a line with the line of feed, substantially as set forth.

3. The herein described art or process of cutting concavo convex wooden articles or.

shells continuously from ablock, which @011 sists in alternately cutting a shell from the face of said block and facing off the block by means substantially as described, as herein set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

SETH H. SMITH.

lVitnesses Vii. BAGGER, J. REED LITTELL.

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