US37334A - Improvement in sawing-machines for edging, setting, and resawing lumber - Google Patents

Description

UNITED STATES PATENT GililiicEQA AQGUSHING, OF ST. JOHN, NEW BRUNSWICK.'

IMPROVEMENT IN SAWING-MACHINES TOR EDGING, SETTING, AND RESAWING LUMBER.

Specification forming part of Letters Patent No. B7,334,4dated January 6, 1863.

To aZZ whom it may concern.-

Be it known that I, A. CUSHING, of St. John, in the Province of New Brunswick, have invented a new and useful Improvement in Sawing-Machines for Edging, Slitting, and Besawing Lumber; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specication, in which- Figure l is a side sectional view of my invention, taken in the line m Fig. 2 5 Fig. 2, a plan or top view of the same; Fig. 3, an end view of the same.

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

The object of this invention is to facilitate Aand decrease the labor attending the fulling or applying of lumber to sawing-machines for edging, slitting, and resawing lumber 5 and to this end the invention consists in connecting a platform or stand tothe feed-table in such a manner that the attendants will be carried along with the feed-table as the latter moves back and forth, thereby greatly diminishing vthe labor of the attendants and materially eX- pediting the work of the machine.

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

A represents a framing composed of twoV parallel side pieces, a a, connected at their upper parts by transverse bars b and B represents friction-rollers, the journals c of which are tted in the upper edges of the side pieces, a a, the rollers being between the'side pieces a a, and parallel with the transverse bars b. The upper parts ofthe rollers B are above the A upper edges of the side pieces, a a, and each roller is grooved circumferentially near its end, as shown at c c.

G' is a circular saw, which is placed on an arbor, D, the bearings of which are in the upper edges of the side pieces, a a. The sawarbor D is parallel with the rollers B, and the saw C is about in line with the centers of the rollers B.

^ E represents a feed-table, which is formed of two y parts, d d', connected together at one end by a loop-shaped metal bar, F, which will pass over the saw. (See Fig. 3.) The parts d d of the feed-table are not in close contact, a space, e, being allowed between them to admit of the working of the saw without the latter interfering with the feed-table. To the under side of each part d d of the feedtablepthere is attached a longitudinal strip, f, and these strips fit in the grooves c c of the rollers B, and retain the feed-table in proper position.

G is a stand or platform, which is connected by metal bars H H with one side of the feedtable E. This stand or platform has a rack, I, secured ylongitudinally to its under side. Into this rack a pinion, J, gears, said pinion being on a shaft, K, which is underneath the framing A, and has the pulleys L L on its outer end. The stand or platform G works in a recess, g, in the iiooring M, on which the framing A is placed, the upper surface of the stand or platform being iiush with the iioorin g,

as shown in Fig. 3. The feed-table E isl moved or operated first in one direction and then in the other, in consequence of a crossbelt running around one pulley L and a straight belt running around the other, and said belts being rendered alternately operative and inoperative by friction-rollers or other means. The attendants stand on the platform G, and are carried along on it as the feed-table moves back and forth. There are two attendants on the stand-one at each endand these attendants adjust the stuff on the feed-table in a proper relative position with the saw previous to each forward movement of the feed-table. The refuse is also removed by them as well as the sawed stuffl 4when iinished.

By this invention it will be seen that the workmen or attendants do not require, as hitherto, to walk from one end of the machine to the other in order to feed the stuffto the saw.

rIhey may stand stationary on the platform G,

pick up the lumber from the flooring M, and adjust it on the feed-table E with compara tively little labor. i

Hitherto, with the old machines, the workmen actually walked one mile in edging one thousand feet of lumber, and in edging twentylive thousand feeta days workthey were required to walk twenty-ive miles; hence the men at the edging-machine were required to work hard in orderto keep pace with a sawmill which could turn out that amounttwenty-ive thousand feet-of sawed lumber per day. By my improvement the work can be readily accomplished and ample time allowed stand or platform G, connected together or so the Workmen to properly adjust the stuft'on arranged asrto be operated simultaneously, as

the feed-table. and for'they purpose herein set forth.

Having thus described my invention, what I A. CUSHING. claim as new., and desire to secure by Letters Witnesses: Patent, is Y M. S. PARTRIDGE7V The combination of the feed-table E and TIMOTHY SHINE.

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