US404655A - preston - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. PRESTON.

' GRAIN PRESS. No. 404,655. P; Patenlzed June 4, 1889.

Inventor.-

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W. PRESTON.

GRAIN PRESS.

N. PETERS. Pmwumu n hm Wnlnmginn. at;

2 Sheets-Sheet 2.

Patehtec'lJune 4, 1889.

. cleats mounted in a suitable casing, so that Fig. 1.

' to enable it to resist a powerful internal press- UNITED STATES PATENT. OFFICE.

WVILLIAM PRESTON, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE-HALF TO JAMES J. KELLY, OF SAME PLACE.

GRAlN--PRESS.

SPECIFICATION forming part of Letters Patent No; 404,655, dated June 4, 1889.

Application filed Augustl'7, 1888i.

To all whom it may concern:

Be it known that 1, WILLIAM PRESTON, of Brooklyn, in the county of Kings and State New York, have invented certain new and useful Improvements in Presses for Drying; Brewers Grains and for other Purposes; and

I do hereby declare that the following is a full and exact description thereof, reference? being had to the accompanying drawings, andi to the letters of reference marked'thereon, makinga part of this specification, in which v Figure 1 is a horizontal section through the top of the press in line a: 00 of Fig. 2; Fig. 2, a central vertical section in line y y of Fig-1, Fig. 3, a detail in elevation of the yoke and screw for securing the discharge doors o'r valves; Fig. 4, a sectional detail in line 2 z of; Fig. 5 illustrates the combinationof the grain-press with a hydrostatic press for: actuating its plungers. 5

Similar letters indicate like parts in all of the figures. I

My invention has for its object to facilitate the compression of wet brewers grains in large quantities for the purpose of squeezing out and extracting the excess of moisture therefrom preparatory to fully drying the same.

It consists in the combination, with a series of screw-actuated plungers moving horizontally, of a series of detachable perforated partition-plates and interposed supportingthe plungers may move between said plates and force the grains filled therein toward discharge valves or doors, which are opened more or less to graduate and control the pressure upon the grains and the rate of their discharge, as hereinafter fully set forth, and in the details of construction and combination of parts, as hereinafter described and particularly claimed. a

The press is constructed of a stout rectangular frame or casing A A of heavy boards, supported by suitable uprights B B and crossbeams O O and D D, all bolted together by longitudinal, vertical, and horizontal tie-rods E E ure. Double doors F F and F F are fitted transversely in the top of the casing to swing outwardly, as shown in dotted lines, Fig. 2,

Serial a. 283,030. (No model.)

and-when closed these doors are battened down and made fast by means of transverse plate J which serves as a false bottom therefor. In like manner narrow cleats I I I are secured vertically against the inside of the lateral walls or frame-work of the casing to supportperforated plates J, fitted vertically against the same to constitute the inner walls of the apparatus. The casing is furthermore divided longitudinally into a series of compartments K K K of equal size by means of perforated-plates L L L L, arranged in pairs against interposed vertical cleats m m to form vertical-hollow partition-walls between the compartments.

The outer end of each compartment is closed by a door N, hinged, preferably, at its upper end to swing out at the bottom, and which is secured and controlled by means of a yoke 0, made to span the opening outside the lower free end of the door, and fitted with a central set-screw 0, working through it to bear upon said free end. Each yoke O is hinged at one end to the casing, and is caught and held at the other by a catch P. (See Fig. By swinging the yoke upward the door may be opened wide and free, while by means of the yoke the door may be held closed against the internal pressure exerted upon it in the operation of the press, or be opened more or less during the continuance ofthis pressure to permit, if desired, a gradual outflow of the grains while still under pressure.

A heavy plunger or follower R is fitted to move horizontally in each compartment and to bear closely against its side, bottom, and top plates. Each plunger is .secured to a strong bar or rod S,working centrally through the rear wall of the press, and the several plunger-rods are all made fast at their outer ends to a cross-head T, working freely at each end in longitudinal ways (see Fig. 4) formed in the inner sides of lateral beams U U, ex-

tending the length of the press. This crosshead T is made to travel uniformly in said ways to and from the press by means of two endless screws \V V, working through each end thereof and rotating in bearings formed therefor in the frame of the press. 5 The two endless screws W TV are geared together to rotate in unison by means of sprocket-wheels V V on their outer ends, carrying an endless chain V and driven by a suitable motor geared in the customary manner to one of them.

In place of the endless screws WV \V,worked by a motor to actuate the plungers R R, I contemplate the use of a hydrostatic press of the customary form for the same end, substantially as shown in Fig. 5, in which the cross-head T, to which the plunger-rods S S S are attached, is represented as moved by the piston a, working in the extended hydraulic cylinder Z) under the pressure of water admitted from a supply-pipe c.

In the operation of the improved press the followers are first moved back in each compartment against the solid end wall of the casing, so as to leave said compartments free to receive the grains to be pressed, and the end doors N N are closed and made fast by the yokes O O and the screws working through said yokes. The grains are then dumped in bulk through the open doors F F F F at the top of the press into the compartments K K to fill them. This being done, the doors F F and F F are closed, and are secured by means of the batten-plates G G and the lockingscrews H H, which are screwed down upon said plates. The crosshead T is then made to move slowly and steadily toward the casing by the rotation of the endless screws \V \V, which are driven in unison by the sprocket-gear V V, and are actuated by a suitable engine geared to one of them. As the cross-head T moves forward the several plungers R R attached thereto are carried forward in each compartment K, thereby pushing and gradually compressing the wet grains therein toward the end doors N N. As this compression takes place the moisture in the grains is squeezed out and escapes freely through the perforated side walls and bottom of the compartments, the intervals between the cleats m m and I I, by which the perforated plates constituting said walls and bottom are supportedagainst the pressure thereon, furnishing open channels for the discharge of the waste fluid. \Vhen the compression has so far progressed as that the bulk of the water has been expressed and the resistance becomes unduly great, the end doors N N are opened more or less by a withdrawal of the set-screws O 0, so as to relieve the excessive pressure and allow a slow discharge of the grains, and when the surplus moisture has been fully expressed these doors N are thrown wide open to permit a complete discharge of the grains from the compartments by the completion of the stroke of the plungers.

The perforated lining and partition-plates of the casing admit of ready removal for repair or for readjustment, and the press is strong and simple in all its parts and very eflicient in operation.

I claim as my invention- 1. The combination, with an outer supporting-casing having perforated inner side walls, a perforated bottom, and a solid end wall, of a series of double partition-walls severally formed of detachable perforated plates and interposed transverse cleats, and which abut against the solid wall of the casing at one end and its uprights at the other, hinged doors closing the openings between. said uprights, followers moving longitudinally in the compartments formed by the double partitionplates between the solid wall at one end and the doors at the other, and mechanism, substantially as described, for actuating said plungers and moving them to and from the end door of each compartment, substantially in the manner and for the purpose herein set forth.

2. The combination, with an outer supporting-casing having perforated inner side walls, a perforated bottom, and a solid end wall,of a series of double partition walls severally formed of detachable perforated plates and interposed transverse cleats and which abut against the solid wall of the casing at one end and its uprights at the other, doors closing the openings between said uprights, followers moving longitudinally in the compartments formed by the double partitionplates between the solid wall at one end and the doors at the other, mechanism, substantially as described, for actuating said plungers and moving them to and from the end door of each compartment, a yoke spanning the openings for each door to limit its out ward movement, and a set screw working through said yoke to control said movement, all substantially in the manner and for the purpose herein set forth.

3. The combination, with an outer supporting-casing having perforated inner side walls, a perforated bottom, and a solid end wall, of a series of double partition-walls severally formed of detachable perforated plates and interposed transverse cleats, and which abut against the solid wall of the casing at one end and its uprights at the other, doors closing the openings between said uprights, followers moving longitudinally in the compartments formed by the double partition-plates between the solid wall at one end and the doors at the other, mechanism, substantially as described, for aetuatin g said plungers and moving them to and from the end door of each compartment, double doors hinged at the top of the casing to extend transversely over its compartments, a batten-plate to cover the joint. between each pair of doors, and a set-screw working against said batten through an upper cross-piece to fasten and secure the doors against internal pressure, substantially in the manner and for the purpose herein set forth.

IIO

4. The combination; with an outer supportin g-casinghaving perforated inner side walls, a perforated bottom, and a solid end wall, of a series of double partition-Walls severally formed of detachable perforated plates and interposed transverse cleats and which abut against the solid wall of the casing at one end and its uprights at the other, doors closing the openings between said uprights, followers moving longitudinally in the compartments formed by the double partition-plates between the solid wall at one end and the doors at the other, a cross-head to which the followers are all secured endless screws working through said cross-head, one at either end, gearing 15 connecting said screws to cause them to rotate in unison, and mechanism for driving the same, substantially in the manner and for the purpose herein set forth.

In testimony whereof I have signed my name 20 to this specification in the presenee of two subscribing witnesses.

. 111 v WILLIAM PRESTON.

Witnesses:

A. N. J ESBERA, E. M. WATsoN.

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