US80855A - George f - Google Patents

Description

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GEORGE F. H.; BROWN, OE LEOMINSTER, MASSACHUSETTS, ASSIGNORTO ATIIE UNION` COMB COMPANY, SAMEl PLAGE.

LettersPatent No. 80,855, dated August 11, 1868.

IMPROVEMIINT'IN MACHINES FOR SAWING-GOMBS.

TO ALL WHOM IT MAY GONGERN:

Be it known that I, GEORGE F. H. BROWN, of Leominster, county of Worcester, Commonwealthof Massachusetts, have invented a new and useful Improved Comb-Sewing Machine and .I do hereby declare that' the following is a full and clear description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon. l

In the drawings- Figurel is a side view,

Figure 2 a plan view,` and Figure 3 an end view of my device.

This invention consists 'of a new and useful arrangement for the purpose of sawingfout cemhs, so as to make the teeth on each side at the same time. o

In construction, it is formed with two circular saws, A and A', which are set upon spindles, B and'B, and operated by belts working each of these spindles independently. f

Alcarrier, C, is arranged between these saws, for the purpose oi' supporting-thestock and shifting it to the action of the saws. The peculiarrconstruction of this carrier will be hereafter described. v PointersD and D are arranged` so as to cut the edge of the stock into nicks, and vthis is done just before the saws enter at this part, the carrier transporting the stock the distance of one tooth each time, and the pointers being that distance ahead of the saws.`

The motion required to be given to the carrier with the stock is a succession of movements the distance' of one tooth width, with'time enough between for the saws'to cuter and recede..

For this purpose, the carrier is constructed as follows: i

I't slides 'in ways Ev and Ein the hed of the machine, and is operated by meanstoi'v a horizontal `shaft ruuning through the machihe, and having its bearings at each end. This shaft, F, is equidistant from feach saw, and has eccentrics, G Gv', 82e., on it, for the purposeot throwing in and out the sawframes H H, Stc.,which' Y'are hinged at their lower sides, at J, and are 'kept in by means of a spring, K, connecting them@ The other part of the shaft F is threaded, and works the carrier C along by means of va clamp-nut, L, on thef latter, this nut consisting of tw'o levers, and arranged ashereatte-r shown.

On the side of one of the bearings M of the shaft is a cam, N, which works in1 connect-ionwith a pin, O, ,i, n the shaft at this point, to throw the shaft, and with it the carrier,'the distance ,of the-width of one tooth ofthe comb away 'from the bearing, the pin O strikingagainst this cam as the shaft revolves. Another pin, P, oper-- ates the pointers, throwing them up whe'n the shaft revolves, and the pn P strikes againstV the 'lever Q, and presses it down, it being pivoted at R, and having the pointers attached to the otherA end.

' The clamp-nut L consists of two pieces, a and a', each pinned at the centre,.on the'end of the carrier, at 6, the lower ends being threaded, andv meshing with the threads on thefshaft F, and the upper eudsbeing operated by means of a cam, o, on the end of a lever, d. Thisa'lever d performs the function of holding the stock upon the carrier, being hinged atene end,l atp, and latched, when shutdown; on, the Vstoc'zkj,` by means of alat-cl, y",ou v

the other end of the carrier.

When shut down, the cam-end c is thrown up, and presses the upper endlsof theV nut-leversat and: a( apart, clampingthe lower ones with theithr'eads against the screw of the shaft on each side, bntwhen the. I-ever Vd is unlatched, the carriermayhe slid over the shaftF without the. nut L being' operative.` A, gauge, U, at one-side, enables the stock to be equally adjusted uponthe-carri'er. I

The operation of this is as follows: i

The carrier is slid back to theposition `sho-'wn in fig. 1`, the stock is placed upon Vthe earrier and the lever latched down, clamping 4thenut on the-shaft. The latter revolving, is thrown back by the Sdrewon it, (the,

carrier acting, by reason of its superiorffniotion',as a set-nut,) until the pin, O strikes against the cam N, and,

overcoming-the friction of the carrier, throws it forward a little distance, theshaft immediately working back after the pin O has passed the cam N, and during which time the saws are thrown-in, cutting their splits, and

the pointers are thrown up, cutting the nicks for the next cut of the saws to commence with. As soon as the saws have cut their way and-are thrown out again, the pin O has again reached the cam N; and the operation is repeated.

Set-levers crandJc, Snc., are arranged Von each side of the saws, to keep them true, and these are operated by means of their screw-pivots, m m, Ste.

The advantages of this device are that I obtain a compact automatic machine, easily managed, and cutting both sides of the comb at'oncc.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the shaft F, having the cams or eccentrics G and. G' on it, and the two saw-frames H and H', with saws A and A', for the purpose of cutting both sides of a comb at the same time, the parts'y being constructed and arranged substantially as shown. l

2. In combination with the saws A and A', the automatic arrangement of the pointers D and D', substantially as and `for the purpose shown.

G. F. H. BROWN.

Witnesses z lC. H. MERRIAM, W. H..Rnm

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