US61912A - William yaman - Google Patents

Description

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,through the upper cross-piece C and connects \vitl1"'the upper' cross-piece D' WILLIAM YAMAN, 0F CONNERSVILLE, INDIANA.

Letters Patent No. 61,912, dated Fehmarn-925, 1867 i IMPROVEMENT IN SAW-MILLS. l

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T0 ALL WHOM IT MAY CONCERN: p

`Be it known that I, WILLIAM YAMAN, of Connersvilie, in the county of Fayette, and Static of Indiana, hav-e invented 'a new and improved Saw-Mill; and I do hereby declare that the `following is afulhlclear, and exact description thereof, reference beinghad to the accompanying drawings, forming part of this specification- The nature ofthis invention consists in constructing a saw-mill in such a manner thatflat `or square pieces` f of'timber may be sawed from the log, one at each movement of the log ondways, .bix-cli as well as forward, and` a course of pieces each way from side to side, until the whole log is worked up. I

' To enable others skilled in the art to make and use my invention, I will proceed to describe its co'nstrucl` tion and operation. v i `Figure 1 is a. longitudinal vertical sectional elevation from the line a: zu,

i Figure 2 is a top plan view of the same.

1 Figure 3 is an-end elevation, showing the manner by which the saws work i-u the log.

Letters of like name and kind refer to like parts in each of the figures. i it l A represents a rectangular frame, upon which'are erected two posts or guides, B B, with a suitable cross-y beam, C, framed to the top of the said posts or guides for their support. D D are two cross-pieces, located y one above the other, their respective ends being provided with gibs,l a afa a., that iit and work up anddown on the guides' or posts B B. The said cross-pieces D Dl forma kind of sash, being connected by two inclinedi pieces, E E, which stand orvan inclinationy of about forty-ive degrees, and iirmly secured in this position to the In the cross-pieee D is a long slot or mortise, through which the lower ends of the inclined pieces project a short distance below, to which are secured the bearings 2 2 of the lower ends of the -al'bors of the saws. A2 A2 are two arbors, of common construction, that run in bearings, 2 2 and 3 3which are* secured to the under side of the inclined pieces E E, F F are two circular saws, secured by any',well-known` meausto the lower ends of the shafts or arbors 'A2 A2, the surfaces of which stand precisely at right angles with` each other, and cut inV opposite directions, as will be more fully e.\:plained.v U isa screw-shaft that: passes down i of the sash.. T is apulley, located` shaft U, around'which a belt passes, which extends and works around` p Us @ml said cross-,pieces D D.

upon the upper end of the said screwanother pulley, S, located and secured to the upper end of a crank-shaft, R, for thepurpose of elevati lowering the saws, which are connected to the cross-pieces or sash D D. I is a carriage, placed hpon the fraaie` A, the side pieces of the said frame A. serving as ways or guides for the carriage I, at the ends of which are t rabbets that iit and move upon the side pieces of the frame A. .H is another carriage,ithat is placed and movies upon the carriageI, and upon which the log is placed that is designed to be cutup. .I is a ratchet-banwhich works longitudinally in each end of the carriage I at b b, iig. 2.' In'the said ratchet-bar `I works a pawl, K,the1 pawl K being attached to a crank-shaf t, L, which runs longitudinally with the carriage H, in whichit has bearings in each end of the said carriage I-I. c arev two short upright posts, which are secured` one'at `each end of the frame A. In these upright posts, e 11, are bearings in which are placed .the cam-rod or shaft M, which is for the purpose of feeding the carriage H over, afterA the saws Vhave passed through the log, foranother eut;` thel carriage `being prevented from having any lateral motion by the pawl K while the saws are cutting through the log. P I?r are pendent barswhlch are secured one upon each side of the lower cross-piece D, uponfthelower ends of which are pivotcd near the centre, Vlevers O O, one end of the said levers O 0 being 4connected by a 1 -pivot to spiral springs, N N, the said spiral springs N N boing attached at one end to the lowcr cross-piece D of the framel or sash. Q Q are arms or stamlards,l attached toV opposite corners of thecarriageI, that engage thepivoted levers O O as the carriage passes back and forth, for the purpose of throwing off the piece of timber as it is cut from the log. y 1 p `The operation of my invention 'is l,imple and perfect,.it being driven by any of the well-known powers. `The p logisplaced upon the-carriage II, which is voperated back and forth by a suitable feeding mechanism acting;` upon thc carriage I, so as to feed the carriage II longitudinally bach and forth, which is notshown,as I do not j claiui the means of feeding the log longitudinally to the, saws as my invention. When the log has passed thel l in the ratchet J engages the curved portion oi` the shaft 3M,

saws, thc carriage moving alittle further, the hole he carriage II upon which the log is placed, moves which operates the` pawl K upon `the shaftL, which is in t the log over laterally ready to cut another piece. As the earriage returns with the leg, the shaft M, havingl a like curve at each end, feeds the leg over for anotherjcut, the saws cutting hack and forth through the log,

cutting a at or square piece at each movement, as seen in iig. When the Log has been sawed from side to side, the shaft L is turned over with the pawl Ix', and likewise the curved or cam-.shaft M is turned over, reversing the lateral feed `motion, so that another tier is eut in the same manner as before, thus feeding` and cutting alternately from side to side until the logis sawed up, so that no time is lost by any ggging or baekward motion ofthe log. When the saws have passed through the log, the upright arm or standard Q engages the pivoted lever O, that is connected at one end to the spring N, when the said spring N is ,drawn back by the forward movement ofthe upright arm or standard until the carriagehas passed a point that the pivoted lever O becomes disengaged or released, when the spring flies forward and strikes the end of the piece that has just been eut` and drives it clear from the saws and the log. It will be observed-that the teeth of the saws run in opposite directions, se that their act-ion will be` the same in the log as they cut alternately back and fort-h in the log, one 'saweutting up out of the lo,r while the other cuts into the log. Y Y

Havin` thus described my invention, what I claim as nenn-and desire to secure by Letters Patent, is

1. I claim the carriages H and I, in connection with shaft L, pawl K, ratchet J, and-curved shaft M', substantially as andfor the purposes described.

2. I also claim thelever O, and upright standard Q, and pendant P, in combination with the' spring N, substantially as described.

3. A seltsettng carriage, operated by means of the curved shaft M, substantially as herein shown and described.

WILLIAM YAMAN. Witnesses:

J. C. Tnownnrnen, WM. J. PEPPER.

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