US273829A - Dissntegrating-mill - Google Patents

Description

(No Model.)

G. ELBREG.

DISINTEGRATING MILL.

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FFICE@ GEORGE ELBREG, OF COLUMBUS, OHIO.

DISENTEGRTING=IVIILL- SPECIFICATION forming part of Letters Patent No. 273,829, dated March 13, 1883.

Application filed June 2, 1882. (No model.)

To all whom 'it may concern Be it known that I, GEORGE ELBREG, a citizen of the United States, and a resident of Columbus, in the county oi'Franklin and State of Ohio, have invented certain new and useful Improvements in Disintegrating-Mills, of which the following is a specification.

This invention relates to improvements in mills for disintegrating bones, burnt clay, and other hard substances 5 and the objects ofmy invention are to provide a novel construction of the disintegratiug shells or wheels, whereby it a portion ot the same becomes injured or broken it can be readily replaced, and to provide a simple and efficient means for strengthening the shells or wheels and preventing the material being operated on escaping laterally from the shells or wheels. These objects I accomplish by the construction of parts illustrated in the accompanying drawings, in which- Figure l is a central vertical sectional View of a machine embodying my invention; Fig. 2, a detached elevation ofthe shells or wheels carried by one of the disks; Fig. 3, a perspective View of two of the segmental sections united by bolts or rivets.

A A represent the frame on which the mill is mounted; a, a', thejournal-caps for the millshatts; B B, the driving-pulleys mounted on shafts b b.

On shaft b are mounted two annular grinding shells or wheels, cc', which are provided with slots or passages I. rlhese annular shells are made in segments of the form shown in Fig. 3. Each segmentoi' the shell is provided with a segmentalflange, O, which projects inwardly from one edge ofthe shell, and by which it is united to disk C by rivetsor bolts o. The disk O is firmly secured to the shaft b by means ot' a hub. Ou the opposite shaft` b', are mounted two similar annular disintegrating shells. D D', which are made of segments on the plan similar to that shown in F1g. 3, being provided with similar openings, I, iianges D2, and the disk and hub C. The two sets ot' disintegrating annular shells D D and c o are arranged to run concentrically t0 each other in opposite directions, as indicated by the arrows in Fig. l, one set of the disintegrators being a counterpart of the other.

j represents segmental grooves drilled in the edges of segments c c'. When the segments are united to complete the annulus, the bolts or rivetsj are inserted and fastened.

In order to secure the parts firmly together, metal hoops or bands c are shrunk upon the outer periphery of each of the annular shells D D c c.

g represents rings or Iilling -pieces on the edges ol' the flanges c o' D D', to till thespace betweenr the parts enough to prevent the material from working ont laterally from between the shells.

Great difficulty has been encountered hitherto in constructing and using disintegratingmills of this class for grinding burnt clay and other hard substances because of the breaking ot' the metal. Again, the impossibility of repairing when broken has made the renewing ofthe parts exceedingly costly but when the mill is made in sections united as here shown it can be made of Bessemer or other similar casting steel, which makes the mili materially stronger and more durable, and at the same time, should one of the sections break, it can be repaired at small cost, comparatively.

H represents the hopper, from which the materialis fed into the mill through the eye in the center ofthe shell over shaft b.

h represents an apron, attached tothe under side ofthe hopper H, to cover the opening in the center ot' the shells below the hopper to hold the material inthe mill.

F represents a break-bar attached to frame A by means ot' a key, f, anditprojects through apron h into the inner shell to assist in reducing the material, so that it will pass through opening I in the shell D.

The mill operates similar to other mills oi' thisclass; but, being made ot' strong material and more durable, it is capable ot" being revolved at much greater speed, and hence becomes more effective.

I claim-n l. Thecombination of the annular disintegrating shells or wheels, composed of a series of segmental sections, each having an inwardly-projecting segmental flange, with the vertically-arranged disks, having their peripheries detachably united with the danges on the segmental sections, substantially as described.

2. The combination, with the annular disinterial escaping laterally from` the shells or tegrating shells or wheels, composed of a sewheels, substantially as described. ries of segmental sections, each provided with In testimony whereof I have hereunto set my an inwardly-projecting segmental Harige, and hand in the presence of two subscribing wit- 5 the vertically-arranged disks deftachaloly connesses.

Iected 'with the said flanges, o the exterior annular' hoops or bands for strengthening` the GEORGE ELBREG' segmental sections of the annular shells or Witnesses: Wheels, and the interior projectiifg einnulzuI ELLIOTT B. BLISS7 1o rings or filling-pieces for preventing the mal CEAS. E. MILLER.

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