US77129A - Improvement in saw-mills - Google Patents

Description

Leners Patent No. 77,129,- aaes Apta 21, 186s.

IMPROVEMENT In SAW-Mms.

dln .Santilli referrer tu im time rttat tant ma lurking am nf tlm' 5min.

TO VALI; WHOM I'l MAY UONCRN: v

Be it known that we, CHARLES R. TOMPKINS, of the city of Rochester, coun ty efMonro'e, und State of New York, and JOHN WRIGHT, ofthe city, county, and State aforesaid, have invented a new and useful improvement in the Manner of Feeding Resawing-Machines; and we dohereby'decl'are that the following` is a fnll, clear, and exact description ofthe construction and operation of the same, reference beinghad to the annexed drawings, making a part of this specioation, in which- Figure 1 is a perspective lview.

Figure 2 is a plane or top elevation with rollers removed.

Figure 3 is a sectional View of-themovable saddle with the gears removed.

The nature of o ur invention consists in constrncting a re'sawing-mach'ine in 'the ordinary manner, with abcdplate, c c, igsl and 2, vsecurely bolted to the frame o, g. 1. This bed-plate is provided with suitable ways, into which the sliding piece,c c, iig. 1, and c c c' e, iig'. 2, is locked, by. being 'planed to a correspondingangle.

This sliding piece, c c, iig. 1, is worked either way, by means of the screw and hand-wheels,f, fig. 1, and f f, iig. '2. i

Upon this sliding piece, c c c c, Iig. 2, is a hub, Z, tig. 3, and is turned oif so as to tit to a hole in thc movable saddle d, g. 3, and to allow it to swing upon this centre.

Upon plate C C, fig. 3, are attached nuts, 2.2, into which the thumb-screws, H H, iig. 3, are'iitted, so that CHARLES, R. TOMPKINS AND Jon-NWRIGHT, OF ROCHESTER, NEW YORK.

the ends of them press against the sides of. the saddle7 d, fig. 8, and when one is turned to the rightandthe other to the 1et't,'the saddle d, fig. 3, is moved' or made to turn upon the centre at l, fig. 3,-'or.nthe oppositc direction by reversing the screws. i i To this`saddle d, iig. 3, are 'attached suitable bearings, 3 3, Eug. 3,and 3, fig. 1, into which the shafts of.

gears t' t' z'z, iig. 2, are fitted and revolve. I

Upon this saddle OZ, figs; 1 and 3, the .arms a a, figs. 1 and 2, are fastened by the screws n n, tig. 1, and 'an n n, iig. 2, and are provided with slots, so that they may be moved. either forward or back, and, by so doing, the

top of the rollers, b b b b, tig. 1, maybe inclined to any angle, o r vset square with the saw G, iig. 1.

Thc tops ofarrns d a, iig. 1, branch off, so as to form a support to both rollers, as shown at l Z l Z, iig. 1, and are attached to the boxes :t x new, g. 1, which form ajoinrtl upon thc pins or bolts y, iig. 1.

The lower end ofthe shaft that passes through rollers b b bib, iig. 1, rests in thecentrc of gears z'z' t' z', figs. 1 and 2, and are so arranged that the rollers may be inclined to any angle-without altering the position vofgears zz'z'z',`gs.1and2. i A The rollers b b'b b, fig. 1, andl gears z'zz'z', figs. 1 and 2, are driven by a crossfshaft and bevel-gears, in comm-On with all similar machines.

The other parts of the machine being common-to all machines of this kind, a description sunnecessary. In order to operate the aforesaid improvement, the operator, after adjusting the rollers with-reference to the saw, either for straight orbevel-sawing, bringsthem to `the proper distanceepart by means of screws and hand-wheelsj'f, `fg. 1. The board to be resawed is thcn'fed to the saw G, iig. 1, resting on the plate 4, tig. 1,

and between rollers b b 6 b, iig'. 1. One pairof rollers remain fixed, except when they'arc moved by hand-wheelff, fig. 1. The opposite` pair Ais provided with a spring or lever, so arranged that should the board vary 'in thickness, .thc rollers may adapt themselves to it, and maintain a uniform pressure, but, should the saw incline to either side of the board, as is often the case justbefore or after tiling, the operator moves one ofthe thumb-screws'H H H H, iig. 1, on the side opposite the spring, and thereby changes the -direction of the saw, by moving therollers which carry 'thc board to one side of the saw, or the reverse, ifnecessalry. This enables the operator to'have complete control of tht.l saw while in operation. y

The saddle d, fig.v 3, is held downto plate C C, iig. 3,- by. the screws J J, tig. 3, hut not so as to prevent it from moving in the slots.

What we claim as our invention, and desire to secure by Letters Patent, is The movable saddle d, turning on the huhZLand adjusted by the set-screws H H their confining-screws, yall-adjusted to operate substantially as described. v

CHARLES R. TOMPKINS,

'JOHN- WRIGHT.

'una :he non J J, .with

Witnesses Taos. SMITH, DAVID CLARKE.

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