US282477A - Discharge-valve for maltstersj steep-tanks - Google Patents

Description

fNqMoaem- 2 sheets-sheet 1.

P. W. WoLP. DISCHARGE VALVE FOR lMMIS'IElS STEEP TANKS.` 10.282.471 .Patented July 31,1883..

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Sheet 2.

`(No Model.)` 2 `sheetsa F. W. WOLF.

DISCHARGE VALVE OR MALSTERS STEBP TANKS.

181082828177. .Patentedquly 81, 1888.

lzgzssesf y UNITED STATES l PATENT OFFICE.

FREDERICK w. WOLF, on oHIoAGQiLL'INoIs.

DISCHARGE-VALVE FoR M,4\|.Tsr|-:RsJ sTEEP-TANKS.'

SPECIFICATION forming part of Letters Patent No. 282,477, dated July 31h, 1883.

\ Application mea 1p1-11.30, 185s. (No model.) 4

To aZZ whom it may concern.- f v Be it known that I, FREDERICK-W: WOLF, a citizen of the United States, residing at 4 Chicago, in the county of Cook and State of 5 Illinois, have invented certain new and useful Improvements in Discharge-Valves for Maltsters Steep-Tanks; and I hereby declare the following to be afull, clear, and exact description of the same. l 1o My present invention is an improvement upon a device for the same purpose for which Letters Patent ofthe United States No. 187, 210, dated February 6, 1877, were granted to me, and which has since i been extensively introi 5 duced into malt-houses. The practical application of my device last referred to has led to the discovery of the following imperfections: Toperate the device it is adjusted to the bottom, hoppered or straight, of Ta steep-tank, eo for the purpose of permitting by the means of itsl internal construction the draining off of the'liquid and washing of the material contained in the tank and the discharge of the material itself. It is found, however, for one 2 5 thing, that the emptying-tube is inconveniently long, and further, and more particularly, that the grain which enters the chamber formed by closing the grain shut-off valve to allow the liquid to escape through the water-discharge v Y 3o swells to such a degree that it chokes up the i screen, thus preventing the liquid from escap-l ing, and, besides, the pressure of the mass of grain and liquid inthe tank upon the grain in the chamber packs the particles of the latter 3 5 so closely together that the liquid cannot `get between them, whereby the device is rendered `inoperative until the cause of the trouble is removed, which requires time-and labor, be? sides being very annoying. It is also very 4o desirable to drain off the liquid from the tank withoutpermitting any of the mass of grain to enter the valve-chamber by allowing the water in`which it is being steeped` to escape,

and supplying fresh water, which operation 4 5 may be repeated without great trouble or loss of time as often as may be necessary to steep the grain and avoid any disagreeable odor in the same. To overcome these objections I have invented the device of which the following is an exact description. Y 5o Referring to the drawings, Figure lis a rear elevation of my device, having a portion of the hand-wheel broken away to show a detail;

Fig. 2, a vertical section of the same, and Fig.

3 a plan view of a detail. 55

A is a funnel-shaped strainer, more converging in form than the bottom of the tank L in which it is placed, and having perforations in its body` too small to permit the passage of particlesof the grain being steeped, but al- 6o lowing the `water to drain off, by way of the space between the bottom of the tank and the strainer, through a perforated butterlyvalve, D. The spout of the strainer A fits closely Within an annular top piece, B, hav- 65 ing a flange or rim, o, extending around its upper surface, and made flaring to receive the hopp'ered bottom of the tank Il, to which it is secured, and /a flange or rim, t, around its lower surface, provided with bolt-holes through 7o which the bolts tpass to secure the device to the top piece, B. This top piece, B, preferably of iron, is cast with strengthening-ribs s between the rims or flanges.

C, is a chamber, constituting the emptying- 7 5 tube when unobstructed by the valve E, which would then lie flush with the side, as indicated by the dotted lines in Fig. 2 of the drawings. The perforated butterfly-valve D is of the form shown to flt closely within theannular 8o top piece, B, against the edges of the spout of y the strainer A. It is secured in position in a manner that will allow the leaves to fold together within the chamber C by screwing the ends of the bar, provided with screw-holes for 8 5 the purpose, and to which each leaf is hinged, into recesses, also having threaded holes to re- `ceive the screws, formed one on each side of ter, for convenience of illustration, occupying the position indicated by the dotted lines in Fig. 2 of the drawings, is lowered to the position shown by the full lines in the drawings, whereby the valve-head is made to iit close against the shoulders m and m', which form a valve-seat within the chamber G, to separate the upper portion from the lower. If, now, the screw Z, which is provided with a handwheel, y, and which works within the female screw mito force the valve F (the latter being loosely hung upon shoulders 7c, formed upon the two inner sides of the chamber II, by means of the arms i, bent at right angles and projecting backward from the upper side of the valve F) against the frame, holding the screen G flush with the side of the chamber C, thereby preventing the escape of the liquid through it, is loosened, it falls backA byits own weight, or, in case the rubberpacking-sticks, by the additional action of a suitable spring, h, which it is caused to compress when'closed, thus permitting the liquid to pass through the screen G into the passage H, and thence into the sewer, with which it is suitably connected.

The screw-valve E consists of the valve-head proper, ascrew, g, whose pointturns within a suitable recess in the back of the valve-head, and the hand-wheel n. The thread of the screw g works within a female screw, f, the latter being loosely supported by means of arms e within a pivoted link, I, as shown, the said link being in turn supported by the said arms upon the recessed projections d, which extend in an outward direction from the frame of the device. The link I terminates at its upper sides in two diverging arms, c, which are made annular at their extremities to receive the horizontal bolt K, which also rests near its extremities within holes formed in the projections b.

The holes in the projecting arms of the link are oval in form and sufiiciently large to allow the link to be raised from its position in the recesses formed in the projections d.

When it is desired to remove the valve E from the position shown by the full lines in the drawings to that indicated by the dotted lines in Fig. 2, a few turns of the hand-wheel bring the valve-seat flush with the inside wall ofthe device, as shown by the dotted lines, whereby the grain in the vat will have an unobstructed passage .through the chamber C.

Both the the valves E and F are packed to form tight joints against their respective shoulders. To form this packing an-d make it effective in every way, the inner face of each valve-head is provided with a rectangular dovetailed recess. Into this recess a piece of vulcanized rubber of like shape and dimensions is forced, and it fills up the recess in the face of the valve-head by its expansion after being contracted sufficiently to permit of its insertion into the recess. It is found that upon contact with the iron fora time the sulphur contained in the vulcanized rubber acts upon it to form a powerful cement, thus more firmly securing the packing in its place.

The object of the spring a is to bring the bolt Kland valve-head E closer together when in the position indicated by the dotted lines, to prevent the projecting rubber constituting the packing from catching when the valve is being closed.

yFor convenience in construction, it is desirable to form the part inclosing the chamber C and that inclosing the chamber H separately. Each may be cast with projecting lips to tit into each other, and securely bolted together.

What I claim as new, and desire to'secure by Letters Patent, is-

l. kIn a discharging device for maltsters steep-tanks, the perforated butteriiy-valve D, secured within the same, in combination with mechanism for operating the said valve, substantially as described, and for the purpose set forth.

2. In a discharging device for maltsters steep-tanks, the buttery-valve I), secured within the same, in combination with the strainer A andwith mechanism for operating the said valve, substantially as described.

3. In a discharging device for maltsters steep-tanks, the valve E, in combination with mechanism for adjusting thesame in position against the shoulders m and m within the chamber C, and for causing it to lie flush with the side of the said chamber, said mechanism consisting of the screw g and hand-wh`eel n, female screw f, arms e, forming part of and loosely supporting link I upon the recessed projections d, the said link terminating in diverging arms c, made annular at their eX- IOO I'Io

tremities to receive the horizontal bolt K,

which rests within locks b, and spring a, the whole being arranged to operate substantially as described.

4; In a discharging device for maltsters steep-tanks, the combination, with the waterescape pipe II, leading from the chamber C, of the valve F, provided at its upper endwith the backward-projecting `arms z', bent at right angles, to rest upon the shoulders 7c, formed one upon each inner side of the chamber H, screw Z, provided with a hand-wheel, y, female screw x, screen G, and spring h, substantially as and for the purpose set forth.

5. In a discharging device forfmaltsters steep-tanks, the combination of the butteriiyvalve I), secured within the same and having mechanism to operate it, the strainer A, valve E, provided with mechanism to adjust it in position within the chamber LC and to bring l esem? l s it' Hush with the sifle of the said chamber, said side of the chamber H, screw Z, provided with a mechanism consisting of the female 4screw f, hand-wh`eel, y, spring 7L, and screen G, the 1o having arms e, link I7 having converging arms Whole being constructed and arranged to op* c; recessed proj ections. d, horizontal bolt K, crate-substantially as described.

i 5 resting within che holes b, spring a, Valve F, K FREDERICK XV. WOLR "t loosely hung by means of the backward-pro- In presence of jecting arms i, bent at right angles to rest upon WM. H. DYRENFORTH,

Jche shoulders 7c, formed one uponveaoh inner EDW. MCCAFFREY.A

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