US78019A - Albert b - Google Patents

Description

gaius wenn.'r @anni Laim Pamela. 78h19 dans May 19, 186s'.

IMPROVEMENT 1N sAWmG-MAGHINBS.

dille Sflgchnle-refetreh ti iiiilgce Eaters' 'xtent tmb smiling met the stom T0 ALL WHOM IT MAYCQNCERN: i v V Be it known that-I, Amann Ehltss, of Hollis, 'in the county of York, und'State of Maine, have invented a new'and useful Improved Sewing-Machine; and I hereby declare the. following to be afull, clear, und exactv descriptionjthereof, which will enable'o'thers to make and use my invention, reference being had to the accompnnying drawings, forming part of this invention, in which-- ,Figure l-shows a side elevation of 'my invention. i i

Figure 2, an end elevation, showing. the' gears andthe'na'iin'enof operating the suvr.

Figure 3,4aside view ofvv the method of regulating-thessw. l y i The object of my inventionis to produce almach'ie for sawing'wood and "lumber, driven as hereinafter described, and s o constructed that the vsnwjwill be thrown out of the wood' automatically whenthe piece iscut by the saw. It "also consists in a method of confining or keeping still thewood or lumber while'being sa\ved,

My machine isset upon a frame composed of certain upright` 'and'. horizontal pieces, shown'at A. This frame is so constructed as to abrd a'cmnvenient means of attaching the di'erent operating parts of the machine thereto. The frame-orspport also carries the4 table, a, upon which the lumber is 4placed and held. b is a crank on the shft e, which eagtends horizontally -throughthe machine, and at the other extremity has abevelled,

" gear, d.s f is a transverse shaft, with -a smaller gear,"c, matching d, bywhich revolution is transmitted from one shaft to the other. i flia'sa balance-wheeLfg, and a. drivingv-wheehh. To this 'driving-wheel h is attached, on a pivotithe arm z',-also jointedor pivotd to the slide j in the guideskJc, These ,guidosare set inuprights 1, 2,

Sie. .Z is 'another`arrn, alsopivoted tothe slide j, and j ointedlike the other, and .connecting with the saw-frame m, Bythe operation ofthese jointcdurms'and slides'ndirect backward and forward motion is given to the saw-frame m'by'the rotntonifthe driving-wheel 7i. The frame mis arranged in a slot in the upright, n, as seen in'iig. 1. V i V The'saw and frame are madesoas to lift up or iyup'when'the sawing of any particular piece of lumber is.

concluded, in order thatit'miiyhe out'ot` the way, and ready for application t pieces of timber of dill'erent thickness.- v i 'i This operation is eeeted as follows, and-by'thetfollowin'g devices -o is' a-slide in the upright The slide works in a. groove, and isconnectedat itslower end' tolafix-ed spring, 1'), which always tends to draw the slide i downward.V The upper endof the slide o'hus, two cords, q 1', passing up over rolls, at. q has n hand-piece or knob, u. passes down on the opposite' side of'thfe upright, n, andis attached to the slide 11,.' which slide moves inthe Vsume slot with the |liaw-fraii.\e,- and has zn. tuck'to allow the easy backward and forward motion of the saw even'when the'sliiefrestson the frame.V The-slide o has also a pin, z, which, when the slide is drawn upward, passes over tlie shoulder you the pivotedlever 'z 'The' upper end of e bears against the puwl or.lev er a'. `The spring 8 presses against the lever 2., thus keeping this leverl pressed against a', and enabling the pinz to restori the shoulderg/,but theweight-of ,the saw-fri1m ewhen' `it brings thev pin b. against a, will'counti'act the force of i Y the spring 8, and'thns allenv 4the 'saw to'bethrown., upwardly. From they slide'v depends a weight to Vkeep `the sa-w pressed down on the wood'. i

'The-operation of thesedevices.isnsfollows: Draw downward upon the knob u when the machine is to be started. .This dra'ws'upwaid the slide "o, anfdgfits pin' z, passing over the shoulder y,-'secures'and holds in' place the levers z a,'and byfallowing the corda to'pa'ss npover its vtruckin lthc top of the upright, n, permits tbo'saw to'work down to a `point a little lower than the table a, thus` insuring the complete cutting oifof the wood.

When the saw has' worked down tothe pointu-little below the table a, and the4 wood iscut, the pin bstrikes 'lever u', which turns on 4its'pivot and throws the shoulder y of the lever a out from under the pin gr. The slide o is thus released, and, being drawn quickly down by its springp, it draws onfthe cord r attached to the slide v,

raising itand with it the saw-frame' The weight of the. saw-frame m is intended to be-suicient to release the slide o, as hereinbefore described. 4 i

' c isa hinged lever,` pivoted to one pf the horizontal'bars of the frame A at thc top. d 'is' another similar lever, connected with c by the' cross-piece e', pivoted to hoth'cran'd d.. d has the vspring h', whi'h tends to push upwardly.

c projects over the table a,and has teeth Alc to enter the wood or lumber fm. d is 'fitted with u. metal edge l to catch the teeth of avertieal toothed rack on one of the upright posts' ofthe frame A; By pressingdownward on `al the ivood is secured while being snwed, and the levers are held 4bythe teeth of the vertical toothed ruck.

' I Upon releasingthe metal edgeof d from the teleth, the spring h' will throw up the levers, and allow the wood to be roved along on the table a.

y It is 4to be oliserved that the machine can be operated by one person, standing vso as to reach the crank, b, being thus able to manipulate the wood, manage the levers cd, turn vthe cra-ink, 15,` and control the saw m.

' What I claim as my invention, `:amd desire to secure by Letters Pate-nt, is-

The combination of the slide o, lever z, lever a', cords qr, spring 8, and slide v, as and for the purposes set forth'.

ALBERT E. ROSS. Witnesses: Y

WM. FRANK SEAvm,

HENRY HOUSTON.

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