US107861A - Improvement in circular-saw mills - Google Patents

Description

w. BOWMAN. 1 Circular Saw Mill.' No.'107,861. Patented Oct. 4, 187.0.

N, PETER-5. Phnln-uihawlwr. ramm n. c.

i To an whom ttjnay concern a be raised and lowered. p

a a A friction-pulley, Y, is fastened to the shaft 0, outside of the standard N, and so that it maybe brought in contact .withthe wheel gamut attire;

f vvtttmixt BoWMaN oF ,ETNA GREEN, INDIANA.

" Letters latent N0 107,861,da,ted0ct0ber,4, 1870.

"lM PROVEMENT lN CIRCULAR-SAW MILLS. Q

r The Schedule referred to in these Letters Patent: and making part of the same.

Be it? known that 1, WILLIAM BOWMAN, of Etna Green, in the countytv-of Kosciusko, and State of Intliana, ,have invented an Improvement in Circular- Saw Mills; and I dohereby declare that the following is a full and exactdeseription thereof, which will.

Figure 3,anelevation offthe band-wheels and two vfriction-rollers eniployedin my device' Figura a lever for operating friction-wheels.

The present improvement consists in applying such mechanism to the ordinarycircnlar-saw mill as will greatlylfacilitate the rolling and turning of logs on the carriage, as herelnafterfully described. f

fl" Q N N rcpresentthe frame-work;

M l, the main shafts;

n \V, the band-wheels; and I L, the u pperrsawof an ordinary circularl-saw mill. in the standardsN N1 of the fi'ame-\vork*are formed bearings for ash-aft, O, to rotate in, the bearing in standard N being, vertically slotted, as shown at fig. l 2, so that theend of the shaft running therein'may n, or raised up from it, by means ofa lever, T" l This lever is pivoted to the standard N at V, fig. 1, and, as shown at fig. 4, it has a slot in it, through whichthe shaft O'passes, so that, by hearing down q'go'n the end of the lever, the wheel a will rotate the wheel'Y, and so that the wheel Y will be removed from wheel a when the lever T is raised,'and placed on the stopR, fig. 1.

On the shaft 0- is placed a 'pnlley, U, which, in j practice, should he a clutch-pulley, so that a {chain may drive a wheel, G,so fixed to a drum-shaft, E, I j a which, in practice, should have hearings in dependent bridges, fastened to the loft of the mill, instead of the standards D, as shown in fig." 1. l

' Arope, F, is fastened to the drum-shaft E, and put over a loose sheave-block, B, which, in practice," instead of being fastened to an adjnstablearnn' x A, is fastenedin any desired place in the loft of the mill,f so that the rope F may be hitched to a log in any de'- qsired place. To roll a log onto the carriage J, a rope, F, must; a

first be fastened to it, and the lever '1 brought down,

so that the friction-wheelY will be rotated thei wheel 11, and held there until. the log is movedthe 5 The operation is the same to'thrn proper distance. a log on the carriage.

In order to runthe rope F out, a fi'ict-ion-roller, t, fig. '3, is pivoted to a movable arm, Z, and to the arm is fixed a rod, 1), so that, when it is desired to run the drum E, the roller Z is brought between wheels Y and n, by simply pulling the rod 1; forward, as shown by dotted lines q.

' As a whole, by testing the device practically, it is foundto operate in every respect satisfactorilly, and save the labor of several hands in handlinglogs, while, at the same time, the cost of applying it to a mill is small.

i 7 Claim.

In arranging a circular-saw mill for loading and turning logs on acarriage, the combination of the shaft 0, pulleys U Y, friction-roller Z, drum E, wheel G, rod 1), lever T, adjustable sheave-block B, and rope F, asset forth.

Witnesses: WILLIAM BOWMAN.

G. L. CHAPIN,

E. Gmson.

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