US254784A - warren - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1j W. WARREN.

BEAN ELOURING MACHINE.

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BEAN PLOURING MACHINE.

No. 254,784. A Patented Mar. 7,1882.

N. PETERS. Phutvmhngmplwr. wnsningxon. D C.

UNITE STATES sWENT einen;

l WALLACE VVARREN, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONEHALF TO FRANK C. TAYLOR, OF SAME PLACE,

BRAN-FLOURING MACHINE.

SPECIFICATION forming part of Letters Patent No. 254,784, dated March 7, 1882. Application filed August 15, 1881. (No model.) l

To altwhom fit may concer/n:

Be it known that I, VVALLAGE WARREN, of Chicago, State of Illinois, have invented certain new and useful Improvements in Bran- Flouring Machines; and I do hereby declare that the following is*r a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters otl reference marked thereon, which form a part of this specification.

This invention relates to apparatus for comminuting bran, and is the same as that illustrated in another patent to me of even date herewith, wherein I have described a new lnethod and product in the manufacture of whole-wheat iour, or llour made from the inner grain substance together with portions of the bran. A distinctive feature of such iiour is thatthe bran is reduced by itself or separately from the inner substance ofthe grain to a degree of tineness substantially equal to that ofthe star'chy portions, and is thereafter mingled with such starchy portions to form the improved product mentioned. The reduction of the bran to a suitable degree of tineness is difficultorim possible by ordinary grinding-m achines, the object ofsuch machines being gen erally to effect only the reduction of the inner portionof the grain and to avoid the reduction of the bran. The purpose of this inventon is to provide a suitable means for the reduction ofthe bran to the degree of neness required.

Said invention consists in the several devices and combination of devices hereinafter described, and pointed out in the claims, and

.is herein illustrated in a machine comprising a circular shell having its inner periphery covered by a sharply-rough surface, and a winged disk mounted to rotate rapidly within the shell, whereby the bran fed into the shell near its center is rapidly swept about land against the sharp scrrations mentioned, which cut the bran into tine particles,y A marginal opening in each side of the shellallows the bran-flour or comminuted bran nto escape by being blown out by the action of the wings of the disk when sufficiently reduced.

In the drawings, Figure 1 is a central section of the machine, taken at right .angles to the disk-axis. Fig. 2 is a central verticalsection through the disk-axis. Fig. 3 is a side elevation of thc machine and a vertical section of the housing, into which the machine discharges; and Figs. 4, 5, and 6 Iare details.

A is the circular peripheral wall ot' the shell, and consists oftwo semicircular cast-iron bodies about eight inches wide, each provided with a foot-piece, A, by which the parts are supported on the bedplate B to form, when brought together, a circular band ot' about tive feet in diameter. These parts are held united bythe bolts which confine the same to the bed-plate B by flanges and bolts at the top, and by the circular side plates, A2, which are secured to the edges ofthe band A hy bolts a. Said side plates are made in two parts, and are flanged and joined in the same plane with the band A. y

C C are a number of narrow steel plates, which form the inner peripheral surface ofthe shell, and which are held in place againstV the peripheral band A by means of the annular recessesc2 in the side plates, A2, in which said narrow plates C C rest.

D is a smooth steel disk mounted upon the central shaft, E, which is supported in the external bearing-blocks, H H, upon both sides of the shell, and is provided with the pulley P. Said bearing-blocks rest broadly on the same strong bed-plate B, so as to support the disk D centrally and'accurately parallel with the interior sides ofthe shell A A2. The disk D is secured to the shat't E by means of the right and left threaded nuts F F, one on each side ofthe disk, between which nuts and the disk are inserted smaller disks or plates D', the larger of which are preferably riveted irmly to the disk D. Said disk is set and thus secured with the utmost accuracy at right angles to the shaft E, so as to run perfectly true and noiselessly. The disk D is in diameter about one and one half inch less than that of the shell interior after the plates C C are in place, so that the edge of said disk runs at all points at about three-fourths of an inch from said plates C. The outer margin of said disk is provided with a series of wings, l I, one of which is shown detached in Fig. 5, wherein it will be seen a slot, t', is provided in the wingplate, by which said plate embraces the edge ofthe disk D. Said wing-plate is also bent to nearly a right angle at the inner end of the slot t', giving the tiange 12, which, when the wing is applied to the disk, rests against the edge of the latter.

To fasten the wing-plates firmly to the disk D angle-irons I are riveted on opposite sides ot said disk, as indicated in Figs. l and 2. To these angle-irons'the wing-plates are also riveted, as also shown by said Figs. 1 and 2. 'Ihe disk D is about one-fourth ot' an inch in thickness, and the wings I are about one-eighth of an inch in thickness. The wing-flanges I2 therefore run about tive-eighths of an inch from the surfacesof the plates C C. ,At the sides theyrun in as closely to the shell-walls A2 as practicable. These dimensions may be varied. The inner faces of the steel plates C C are sharply serrated,like a single-cut tile, the serrations in alternate plates running preferably in oppositely-oblique directions, Yas shown in Fig. 2.

Feed-pipes R R enter the shell at opposite points in the side plates, A2, near the center of the machine. Discharge-openings J are also provided through the side plates, A2, opposite each other and at the inner periphery of the shell, each ot which openings is provided with the gate L, running in guides j, and provided with the slots l, not narrower than the openings J. By means ofthe sliding gate L, having the slot l, the opening J may be narrowed and its outer margin at the same time moved toward the center ot' the machine. For the purpose ot moving and holding the gate L the latter has the threaded lug Z', and the plate A2 has the opposite lug, l2, to which lugs the adjusting-screw L is titted, as shown in Fig. 3. The said openings J are located preferably on a horizontal line with the shaft E, as clearly shown, and a portion of the shell containing said openings is housed within the chamber M. The bottom walls, a, of said chamber are inclined, giving the hopper N, in the bottom of which is located the conveyer N. The chamber M is divided by a dustcloth, O, and above or outside said dust-cloth the said chamber has an outlet for the. escape of air.

In the operation of this machine the disk D is revolved at a high velocity. The bran is fed to the interior of the shell through the pipes R, and is at once carried outward to the periphery of the shell and rapidlyswept about therein against the sharply-serrated faces of the steel plates C. In this movement the bran is rapidly and uely comminuted, and when reduced t0 the condition ot' tine flour escapes by the openings J into the chamber lVI, where The dust-cloth or diaphragm O may repre- 1 sent a series of arresters', by which the entire bran product will be recovered from the aircurrent. Such devices for arresting the braniiour may be located in other positions than that shown, and they may be provided with any suitable means for detaching and collecting the bran-Hour therefrom. `Plainly, in the rapid rotation ot' the disk D a strong current of air will be induced downward through the pipes R and outward through the openings J. It is found that the action ot' the air operates to abstract moisture from the bran developed in its reduction, and thereby contributes to the keeping qualities of ultimate product in which it is combined.

I have as a substitute for the steel file-cut plates C G used blocks of burr-stone with fair results; but the cut steel plates are preferable.

I claim as my invention? l. In a bran-flouring machine, the combina tion, as shown, of the cylindricshelland winged disk, said shell having its inner periphery minutely and sharply rough, as described, and having a suitable inlet and a lateral adjustable outlet located near but slightly inward from the periphery, whereby the bran 4may be swept about against the rough face of the shell until suitably reduced and then discharged, substantially as described.

2. In combination with the shell having the lateral marginal opening J, the slide L, having the slot l arranged with the opening J, so as to vary the distance ofthe discharging-oritice from the periphery of the shell, substantially as described, and Vfor the purposes set forth.

3. In the bran-reducing machine described, the disk D, provided with the wings I, having the flanges I2 turned backward and supported from the disk at the outer margin of the wings, substantially as described.

4. In the branreducingmachine described, the disk D, provided with opposite wings, I, each pair consisting ot a single plate having a slot, t', and bent at the extremity of the slot, as shown and described, and for the purposes set forth.

In testimony that I claim the foregoing as my invention I affix my signature in presence of two witnesses.

VVALLAC'E WARREN.

Witnesses:

FRANK D. THoMAsoN, JEssE Cox, Jr.

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