US74277A - Improvement in saw-mills - Google Patents

Description

JOHN BArLLIE, or SALEM, onto.`

Lectrr Paare No. 74,277, are February 11, 1868.

IMPROVEMENT IN SAW-MILLS.

@lgs tlgetnle wertet it im this: itettrrs t-tint mit uniting artt nf tigt smite.

TO ALL WHOM IT MAY CONGERN:

Be it known that I, JO'II'N BAILLIE,'of Salem, in the county of Columbiana, andStatc of Ohio, have invented certain new and useful Improvements' in a Planing' and Rcsawing-Maehine `and I do hereby declare that the following is a fullfand complete description of the construction and operation of the same, 'reference being had to the accompanying drawings making a part4 of this specicatiomiu which-'j' Figurefl, plate 1, is a side viewof' the machine.

Figure 2, a view of the top. i

Figure 3, a view of the opposite sde1of g. 1.

Figure 4, plate 2, a. rear end view.

Figure 5, a view of -the front end.

I Figures 6 and 7, detached` sections. v r Like letters of reference refer to like parts in the several views; 1

In fig. 1, plate 1, A is a frame or. table, on and in whielris arranged'the followingmachinery: In the stand ard, B, fixed to the top of the frame, i's mounted a frame walking-beam, C, at-'one end of whichis `hunga bifur-4 i cated pitman, D, a detached view of which isshown in iig. 6, plate 2. 'The lower endof this pitrnan is connected to an adjustable balance-crank, E, `fig. 3, keyed to the cnd of the shaft F, tig. 5, onwhich is a balance-wheel,

G,'and pulley, H, and by which the machine is driven.' On the opposite end .of the walking-'beam is hung a frame, I, g.' 4, plate 2. The lo'wcr'end et' thisfrarne is connected to a vibrating arm, d, tig. 3, plate'l. Said arm proceeds from a rock-shaft, K, journalled in the stay L, g. 2. l Within this' frame I, isthung a saw, M,` j l immediately in front of which is a pair of guide-rollers, N, supported in the adjustable stays O. In front 4of -themachine is a pair of feed-rollers, P P', iig. 5, P being secured'ir. the adjustable stay Q; which, by .means of the screw R', can be made to approach to or recede 'from the stationary roller P'. 'llo the lower end of 'the 4shaftto-which the roller P' is connected,4v are keyed a crown-wheel, S, and also a' pinion, T. i In this pinion is engaged a pinion, U, which operates the `rolle'rPbymeans of thelink V, saidlinkbeing connected to the roller` and pinion by' adjustable o'r universal joints W. Motion is given to the crown-wheel S by the ,bevel-wheel x, on the shaft Y, andY which wheel'is made rtoA engage andv disengage with the crown-wheel'bya clutch, z, operated by the handle or lever A'. Arranged in the same way as the feed-roller P, and. operated by an adjusting-screw j and spring, B', in the same manner, isa smooth guideq'oller, indicated by the dotted lines a, g. 2, plate l. This roller is placed in front of .the p'itman, and behind the pitman is a pair ofsmooth guide-rollers, C', of a similar character, and which are supported in"the stays D', figs. 1 and B lil' is a revolving ,head of cuttis, arranged immediately back of the guide-rollers C', and is driven by the shaft and pulley F', iig'. 5, `mounted in the stay Gr', and which receives motion from the pulley H', by means of the belt I', said pulley in` turnrbeing zdriven by the drum J' Vonthe main shaft FV.. t

The planing-apparatus of this machine consists of a pair of chisel-shaped cutters, K, fig. 6,.plate 2. K 'A detached'view of one is shown in fig. 7. As will be observed, these-cutters are xed 4between the branches of the pitman,'in adjusting-clamps b, so that they can be made tov approach or recede from each athenes the'thiclii ness of the board to jbe planed may det'ermineand which is done as`follows: A board, oi the proper thiclr: ness for two pieces .of siding, is intruded edgcwiso between the feed-rollers PP', and fby means of 'the adjustable roller and spring-e, is held close pressed against the-plate L'. As the board passes between the` cuttersK, it l is planed on both sides by the downward stroke of the pitman,rand also on the edges bythe cutter-head E'. A` corresponding head of cutters is arranged below the head E', so as to plane the lowerV edge of the'aboard as` it passes through. The board thus pla-ned is ripped throughV by the saw M, making two pieces of siding. The Y board, as it is being sawn, is held in position by theguide-rolle'rs N, and restrained from any vertical movement by the check M'. It will be observed that the saw is not hung vertically, but is slightly inclined to one side j sothat'the pieces of siding, when sawn, will be thicker on one edge than the other, for the convenience of lapping. The elliptical character of the stroke given to the plane-irons is such that the cutting is donein adraw-- ing orshearing-like manner, so that the grain of the wood, however coarse and free it maybe, will not splinter and tear, but is eut smoothly, leaving no ridges or markings of the plane. It also cuts with greater ease, and can be run at a very much lower speed, and hence with an increased power, than the ordinary rota y planes,

.arm .Ltowbch the lower en at tbesame tiine it w sbavings. It will be walking-beam, and to observed that the saw is hung betweentwo radii of a. eircle viz, that described by the which tbe upper end of tbe saw is attached and operated, and thatl described by the radial d of the same is conneeted. New, as the saw is made to reciprocate, the lower end in the downward stroke will be drawn from a vertical line toward the centre of tbe vibration of the arm, and thus be drawn back from the timber; at -the Sametime the upper end of the saw will be drawn-imm a. vertical line toward the Vcentre of tbe vibration of the beam, and bence against the timber. By these twopeculiajr movements all the'teetli of the saw are not engaged at onee'in the timber, a rake being given it, so that it will run clearly and freely throughthe stui. By thisarrangement of the radial armi J, guides and frame for .the controlol the lower end of the saw are dispensed with; ',benee -t will run much easier'and lighter than saws eneumbered by frame, as in the'ord'inary way. i Y

The counterbalance N', on the crank, is so atta the length of the crank andlother eireumstancesmay make it expedient.

What llelainil as myimprovenaent, and desire to secure byiLetters Patent, ls

1. The plane-ironsK, bifurcated pitman B, as arranged, inooombination withI the beam C, in the manner and for the purpose substantially as set' forth;l p I 2. The saw M, as arranged in combination with the beam C, land radial-arm J, in the manner and for, the

purpose set forth. K

3. The arrangement and combination of the adjustable feed-roller `P, inl;l V, pinions J T, and stationary roller P', constructed and operating in the manner substantially as set forth.

ehed that it can be moved toward the centre or from it, as

JOHN BAILLIE.

Witnesses:

J.. H. BURRIDGE, FRANK S. ALBEN.

ill eut as fast, for the reason that-the machine can be fed faster, thereby taking oi wider

Images