US103123A - Improved steam cotton-press - Google Patents

Description

i UNITED STATES AUGUSTINE BALDWIN, OF`NEV YORK, N. Y.

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|IVIPROVEDSTEAIV] COTTON-PRESS.

Specification forming rartvoi Letters Patent No. 103.123, dated May 17, 1870.

"same, reference being had to the accompanying drawings, and tothe letters `of reference "marked thereon.

This invention is an improvement in cotton and other presses; and it consists7 rst, in the arrangement of the levers or arms by means of which the platen is operated 5 secondly, in

i connecting the movable) platen of the press to the piston of an engine by means o f the intermediate arms or leversyand, thirdly, in the construction and arrangementof the press as a whole.

In order that those skilledin the art to which my invention appertains may be able to make and use my improved press, I will proceed to describe the same, referring to the accompanying drawings, and to the letters of reference marked thereon, the same letters' denoting identical partsin both figures.

Figure l is a side elevation, and Fig. 2. an end elevation, of my improved press.

The frame-work of myimproved press consists o ffour strong columns, AAAA, preferably `of iron, which set below into a firm base,

B, constituting the foundation ofthe press. The

upper ends are similarly secured above. 'Io the upper plate is secured the upper platen, C, adjusted by the set-screws c c, so as to be eX- actly parallel with the lowerplaten. On the standard slides the lower or moving platen, D, which is held upon the standard by suit- 4 able loose clamps.

c e e e e2 e2 represent toggle-joints, by means 'of which the movable platen is operated. The y, operation of these arms is as follows: When the press is ready for action, the piston rests at the bottom of the cylinder, the arms e e e e e262 being in the positionshown in Fig. 1. AsV

the piston rises in itsmovement it will be observed that the arms c e e2 e2, in moving upward, operate upon the platen in an almost direct line, giving it, consequently, a rapid initial motion. As the piston advances, however, the point of connection of the arms e e e2 will swing in the arcof `a circle, the center of fed to the press.

which is the point of the fixed pivoting of the arm e. It will result that the arms e e2 will approach more and more nearly to coincidence with the same straight line, and the armewill be thrown more and more from a perpendicular position to a horizontal. action will give constantly-increasing power, with constantly-diminishing velocity of ascent of the platen until the arms ee2are in thesame straight line, when all forward motion must cease.

In the lower part of theframe-work, resting on the lower basis, is the engine E, with its piston vE working vertically, and connected directly by proper ears to the lower connecting-arms of the toggle-lever system. The engine is of ordinary construction,with suitable inductive and exhaust pipes, packing, and valve. It is, however, provided with a special arrangement of valve and induction and exhaust pipes, so that'when "the steam is admitted below the piston to cause its upward stroke on the cotton or other material to be pressed some portion -of the steam admitted shall pass above the piston, be detained there,

and serve as a cushion to break theforce ofthe4 blow and relieve the machine from danger ot' jars resulting from concussion of its` parts. The valve g is connected by the bar lt to lever t', centrally pivoted to the stand A, and further connected by rod K to the hand-lever Z,

whichis so arranged with the press as to be within reach of the operator standing on the platform where the cotton or other material is The operation will be readily understood from the drawings. The machine having been fed with the material to be pressed, the operator, by movement of the hand-lever,J admits steam beneath the piston, forcing up the lower platen, and a reverse motion returns the piston.

The engine is used with special economy and efficiency in connection with this. system of toggle-joints, sincethe toggles acting with immense advantage of leverage at the end of the stroke, the steam may be cutoff early in the stroke, and a great saving be thus effected.

Some of the special advantages obtained by this peculiar construction are compactness and simplicity. The engine-piston being directly connected to the movable platen by means of the toggle joints or arms,.there is no This progressive waste room, and the parts required are few and simple. No gearing or complicated system of levers is employed, and consequently the amount of friction is very largely reduced. If desired, the equivalent niotor power-the screw, with traveling nut, as commonly used in presses of this classmay be employed instead of the cylinder and piston for driving home the platen; but the latter in the arrangement here shown is preferred.

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

1. The arrangement of the arms e ee Ilo

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