US253330A - Roller-mill - Google Patents

Description

(No Model.) I 2 Sheets-Sheet 1. J. WEBER.

ROLLER MILL. 1810253330. P atented Feb. 7,1882.

WITNESSES VENTOR.

ATTORNEYS.

N. PETERS. PholoI-ifllognphen Washington, D. C.

(No Model.) 2 sheets sheet 2.

J. WEBER.

ROLLER MILL. ,No. 253,330. Patented Feb. 7,1882.

WITNESSES N. FETERS. Pmwuma n m, Washlnglon. n. c

UNITED STATES PATENT Oriana;

JEAN WVEBER, OF USTER, SWITZERLAND, ASSIGNOR TO JOHN FEIOHTER & I SONS, OF MINNEAPOLIS, MINNESOTA.

ROLLER-MILL.

SPECIFICATION forming part of Letters Patent No. 253,330, dated February 7, 1882.

Application filed September 21, 1880. (No model.)

To all whom it may concern:

Be it known that I, JEAN WEBER, of Uster, Switzerland,have invented a new and Improved Roller-Mill, of which the following is a specification.

The object of my invention is to provide a new and improved crushing-mill for corn, groats, grain, &c., which is simple in construction and can be adjusted very conveniently at the different periods of the operation, the po-' sition of the rollers being shown by the position of the regulating-lever.

The invention consists in the construction of parts of the mill, as will behereinafter fully deprovided with a floor inclined downward toward each end, so as to guide the material to be ground upon a feed-roller, D, mounted on the horizontal shaft E, which is rotated by a belt, F, passing around a pulley on the shaft G.

The ends of the hopper G areprovided with a sliding gate,I, having a sliding bar, I, passing through the guide-plates a 0, attached thereto, which bar is actuated by means of a lever, J, pivoted on the side of the hopper and having a slot, 0, in the innerend, into which a pin, 1), of the bar 1 passes. Accordingly as the gates are opened more or less a greater or smaller quantity of grain or corn drops into the chutes K, and from there to the crushingrollers'. The feed-rollers D revolve towardthe outside, and feed the grain, 850., into thechute K. In the drawings two pairs of rollers are shown; but any number of pairs may be arranged in one mill, if desired, each pair operating for itself independently of the others.

The rollers L and L and M and M are made of porcelain or chilled iron, and may be smooth or roughened or grooved. The rollers L and M are mounted on shaftsGr and G, having rigid journals, and are arranged in the middle or inner side of the mill, whereas the rollers L and M have movable or adjustable journals, R, and are arranged on the outside or ends of the mill. The shaft G of the roller M is actuated by a belt passing over its pulley O, and in turn rotates the other rollers by means of the cog-wheels P P, &c. The rollers arekept clean by scraper Q Q, and the crushedmaterial drops into the receiving-hopper S. The journal R of the movable roller L is pressed toward the fixed roller by a spiral bufferspring T, the tension of which may be regulated to a certain extent by means of the screw T, provided with a hand-wheel, N. Thescrew T can be locked in any desired position by means of the lock-nut 0. It is necessary to adjust the rollers at Various distances from each other during the operation, and it is of the greatest importance that the rollers are always absolutely parallel to each other. Each journal R is provided with jaws D D on the lower side, and the upper end,E, of alever, F, pivoted at G is pivoted between these jaws. An arm, H, is pivoted to the lever F nearits fulcrum, and is provided with an adjusting-- screw, J, which rests against the lowerend of the lever F. An eccentric, K, is mounted at each end of a horizontal shaft,V, so as to be'in contact with or adjoining the arms H of the lever F, so that they press these arms back ward as soon as the shaft V is rotated by depressing or raisingits lever W, which is guided by a circularlyslotted guide-plate, X, and can be locked in any desired position by means of the thumb-screw nut Y. The plate X is provided with a graduated scale along the circular slot. 7

The operation is as follows: The grain,corn, &c., to be crushed is placed in the hopper and the slide or gate I is raised more or less, as may be necessary, by depressing the lever J the feed-rollers D D preventing the material from clogging at the slot formed by the openin g of the slide or gate I The material drops from the hopper G into the chute'K,andis delivered in between the rollers. If the rollers -L and L or M and M are to be separated, the lever W is depressed, thereby rotating the shaft V and causing the eccentrics K K to push the arm H in the direction of the arrow a"; but as the end of the screw J, secured in the end of arm 11, presses against the lower end of the leverF,this lower end will movein the same direction, and the upper end, E, of the lever and the journal It also move in the direction of the arrow b-that is,the roller L is drawn from the roller L; but as soon as the lever \V is released the buffer-spring T pushes the roller back again, this spring having been previously adjusted to have the desired tension. Ifit is desired to keep therollers separated, the lever W must be locked in the depressed position by means of the thumbscrew nut Y. The rollers can thus be separated or brought together gradually, and can be locked at any desired point to maintain their respective positions in relation to each other. As the two eccentrics acting upon the moving journals are mounted on the same shaft, the two ends of the roller L will move together-thatis, the moving roller will always remain parallel to the other roller-which is of greatimporiance for the perfect operation of the mill.

The arm H is adjusted in regard to its position on the lever F by means of the screw J, for by separatingthe lower end of the arm H more or less from the lever F the adjustment can be made so that both ends of the roller L are moved at precisely the same time.

By noting the position of the levers W in the circularly-slotted plate X, which is provided with a scale, the exact position of the roller L can immediately be seen.

Having thus described my invention,whatI claim as new, and desire to secure by Letters Patent, is-- In a crushing-mi1l, the combination, with the movable journals R, of the lever F, the arm H, pivoted thereto, the adjusting-screw J,and theeccentricsK,substantiallyas herein shown and described, and for the purpose set forth.

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

JEAN WEBER. Witnesses M. TAGGE OZLIKER, FH. FALSY.

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