US3873A - Improvement in cotton-presses - Google Patents

Description

llamen @rares Patent @tirreno WILLIAM BULLOCK, OF JERSEY CITY, NEV JERSEY.

lVlPRl/EMENT IN COTTON-PRESSES.

Specilicatiou forming part of Letters Patent No. 3.73. dated January 4, i845.

. bination with au arrangement.which is so contrived as to release the pressure after it has arrived at a certain limit, so as to have a uniformity in all the bales to be pressed.

To enable others skilled in the art to make and use my invention, Iwill proceed to describe its construction and operation.

I construct my press as per drawings,'l`ig ures l and 2, Fig. l being a side elevation, and Fig. 2 an end elevation, of the press.

A A is the bottom of the press, into which are mortised four main standards or post-s, two only of which, B B, are shown in the drawings.

C C are the crossrails supporting a stationary platen.

D D are the top cross-rails; EE, themoving platen.

The power ofthe press arises from the following combination: E is a common windlass, which is operated on by a crank handle marked G, which has a rope, H II H, passing around it, and thence over and around two pairs of sheave-bloeks, I I aud J J. `Those marked I I are fastened onto the head of the press, and the corresponding pair (marked J J is fastened on the upper end of the lever KK, which has the form of a scalenetriangle. The other end ofthe rope .H H is fastened to the end of a small lever, L, hereinafter mentioned. The main lever K has a fulcrum or center marked M, which has a bearing or hole in a vertical post marked N, which post is mortised into thecrossrail and stationary platen marked C-. Attached to the extremity of the short side of the scalene'triangular lever K are two journals or pivots marked O 0,on which are suspended or worked at one end straps or links P P, playing each side of the lever. Attached to the reverse end, which I mark Q Q, are chains passing over rollers marked It R, which chains pass down and are fastened to iron straps S S S S. These iron straps support the movable platen marked E E. The ends of the straps work into two bars or bolts marked T T, passed through the movable platen for that purpose.

By the above arrangement the pressure for the bale is obtained. It now remains for me to describe my contrivance for limiting the amount of pressure to be applied to the bale or bales. Sliding on the top of the rails forming the 'stationary platen marked C C, I have four pieces of wood, two of which are shown in Fig. l and marked a c a a. The journals of the rollers marked R R are working into them near the outside ends both right and left, while theinside ends, near the vertical standards marked N, are beveled, forming inclined planes of an angle ot'about forty-two degrees from a vertical line, into which is pressed awedgevpiece with corresponding planes, as marked b b b, which works up and down and is guided bythe vertical standard N. The top of this wedgepiece is cnrved,and has pressing onit a curved cam-piece, c c,which is part of the segment of the wheel d d d, which radiates from the center pin, d, the spur-teeth of which work into two pinions, c c, c c. across the machine to work the corresponding pinion and segment which are marked in Fig. 2. Attached to this pinion-shaft is a `frictieirwheel marked f f, which has a friction -band passing around and impinging upon onehalf of its surface, (marked g g,) which i1npingement is maintained by means of a spiral spring marked 7L 7L, the spiral springI and band being connected by means of the rod or bar it' at the joint j. Attached to the same joint is another rod or rope which is connected to the lever L. This lever is of wood, works on a fulcrum-pin, Z, and has on its other end the reverse end of the windlass-cord--that is to say, the cord passing from the windlass around the two pair ofsheaves and fastened to the end of the wooden lever 7c at the point marked m, so that a direct connection is made between the windlass and the band on the friction-wheelj`f Under the Wooden lever 7c is an elliptic spring of steel, (marked a 01,) which has a tension equal to the power required on the upper end of the lever fora givenpressure on the bale, and when that power is exceeded the spring n n gives way and relaxes the frictioirband g g This pinion-shaft passes' v o b b, which is all the while pressing against the cam-piece c c, which forces up the segment- Wheel d d, &c. This, it will readily be seen, allows the two slide-piecesa a a a, which support the journals ot' the rollers marked R R, to come toward the center, lengthcns the vertical portion of the chains, and slackens the pressure on the bale, thus giving the different bales equal size for equal weight.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination of levers K K with the Side links, PP, with chains Q Q passing ovel1 rollers R R, having vertical links to support the movable platen E E.-

2. The invention of the arrangement for connecting1 the self-adjusting platen to the machinery by which the power is applied to the press, so that whenever it takes beyond a limited amount of power to propel the press the simple action of the power in propelling the press will release the bale until only the given amount of power is required.

y 3. The invention of the arrangement for connecting the above arrangement for adjust` ing the power npon the bale to the movable platen of the press, substantially in the manner and for the purposes set forth.

WM. BULLOCK.

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