US627579A - Pulverizing-machine. - Google Patents

Description

Patented June 27, I899.

G. FRISBEE.

PULVERIZING MACHINE.

(Applicatin filed June 1, 1898.1

2 Sheets-Sheet l.

(N0 Model.)

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No. 627,579. Patented lune-27, I899. G. FRISBEE.

PULVERIZING MACHINE.

(Application filed June 1, 1898.)

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UNITED STATES PATENT OFFICE;

GIDEON FRISBEE, or PHILADELPHIA, PENNSYLVANIA.

PULVERIZING-MACHINE.

SPECIFICATION forming' p'art of Letters Patent No. 627 ,579, dated June 27, 1899.

Application filed Tune 1, 1898. Serial No. 682,260. (No model.) i

To all whom/it may concermg 4 Be it known that I, GIDEON FRISBEE, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a newand useful Improvement in Pulverizing-Machines, of which the following is a full, clear, and exact specification.

My invention relates to an improvement in pulveriZing-machines, and more particularly to the discharge apparatus in connection therewith.

The object of my invention is to provide a discharge apparatus for a pulverizing-machine by means of which a uniformity of product is delivered without waste or loss of the material to be pulverized, the pulverized maf terial being automatically fed to the apparatus and discharged therefrom. The discharge apparatus may also be adjusted so as to permit only granules of a desired size to pass there. through, coarser particles being returned to the pulverizing-chamber to be further acted upon. 7

My invention is illustrated by the accompanying drawings, in which v Figure 1 is a side elevation of a pulverizing-machine provided with my improved discharge apparatus. Fig. 2 is an enlarged sectional elevation of the pulverizing-chamber and the discharge apparatus; and Fig. 3-is a cross-section of the discharge apparatus on the plane of the line a; 00, Fig. 2. 7

Similar letters refer to similar-parts.

In describing my invention I have illustrated it as attached to one form of pulveriziug-machine, in which A is a casing carrying movable pulverizing-rolls B B, carried by a shaft D, the said rolls being revolved rapidly within the casing A, so that by centrifugal action they press outwardly against the ringdie E, crushing or breakingsuch substances as may be-between the said die and the adja' cent surfaces of the rolls. In this form of machine a circulation of air is produced tending to throw any substancecontained within said casing away from the center and toward the surface of the die. The shaft D is driven by any suitable means.

F is a casing located adjacent to the end of the pulverizing-chamber, said end of the pulverizing-chamber opening into the interior of the casing F.

G is a screen carried within said casing F and mounted upon a frame H, which is in turn mounted upon a revoluble shaft I.

J is a rim supported by arms K K, carried by and forming, by preference, part of the frame H. I

The screen G is cupshaped, the side walls diverging. The wider end .of the cup-shaped screen faces the opening in the pulverizingchamber, the lower edge of the said screen being located above the lowest point in the inner periphery of the ring-die E, for the purpose hereinafter described. If desirable, a supplemental screen L may be provided, as shown, the mesh of theinside screen being, by preference, slightly greater than the outside screen G. p v v M is a gear-Wheel carried by the shaft I, which gear is driven bythe pinion N through the idle r O. Ehe pinion-N is mounted upon the shaft P, which may be driven by supplemental means or bya belt connection with the shaft .D, as shown'in'said dotted outline. Q is a hopper for regulating thefeed-supply, the said hopper carrying a distributingroll of any ordinary construction, driven by means of a gear R, which is by preference actuated in turn by a worm screw S on shaft P.

In operation the feed supply is passed through the hopper Q and is directed to the interior of the pulveriZing-chamberA, where by means of the rolls B B the same is crushed into a finely-divided state. Then the same has been rendered su fficiently fine, it is driven off by the air-currents tending away from the center of the pulverizing-chamber, and the fine particles enter the screen L, which is revolved, preferably, at slower speed. If the material thus driven into the screen is suffi ciently fine, it passes through the mesh of the screen or screens and is delivered through the spout T to a suitable receptacle. Coarse particles, which cannot pass through said screen, gravitate back into the pulv'erizing-chamber by being rolled over and over in the lower part of the screen,which inclines downwardly, so that the tendency of the rotary movement of the said screen is to work the coarser particles in the direction of the pulverizing-cham= her, in which said coarser particles are acted upon until reduced to a sufficiently finely divided state. As {LDOXG stated, if desirable two or more screens may be used, so as to add to the capacity of the discharge apparatus in handling the produce in process of pulverizing.

The size of the granules delivered from the machine may be varied by substituting screens having meshes of the desired size. In the preferable form the rearends of the screens are closed by the frame H, which is in substantially the form of the disk.

U U are wearing-rings arranged back of the rim J and between said rim and the flanges V. These wearing-rings are provided for the purpose of alfording a bearing-surface to the rear of the rim J instead of to the front of said rim. The position of the rim J with respect to the open end of the pulverizer-casing may be adjustedby introducing wearing-rings U of the desired thickness. The disk H may be shifted upon the shaft I, so as to effect the further adjustment of said wearing-rings.

It is obvious that in carrying out my invention some changes in the particular construction shown and described may be made, and I would therefore have it understood that I do hot limit myself to the specific form shown,but hold myself at liberty to make such changes as are fairly within the spirit and scope of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a pulveriziug-machine, in combination, a pulverizing-chamber,a stationary ringdie and revoluble rolls therein,and a discharge apparatus com prising one or more cup-shaped screens located adjacent to one end of the pulveriziug-chamber and mounted uponan independent]y-revoluble frame, the lower edge of said screen or screens being substantially above the lower inner edge of the said ringdie.

2. In a pulverizing-machine, in combination, a pulverizing-chamber, a stationary die, and revoluble rolls therein, a discharge apparatus comprising one or more cup-shaped screens located outside of and adjacent to one end of the pulverizing-chamber and mounted upon an independently-revoluble frame or holder, the lower edge of said screen orscreens being above the plane of the lower edge of the ring-die, aseparate casing having a discl1argcspout surrounding said screening apparatus, and means for revolving said screens.

3. In a pulverizing-machine, in combination, a stationary pulverizing-chamber, a sta tionary ring-die therein,revoluble rolls within said die, a discharge apparatus comprising one or more cup-shaped screens located adj acent to one end of said pulverizing-chamber and mounted upon an ind ependently-revolnble frame, wearing-rings and means for adjusting the position of said revoluble frame, the lower edge of said screen or screens being located substantially above the plane of the lower inner edge of the die, a casing surrounding said screening apparatus, a discharge-spout for pulverized material, and return-passages for unpulverized material.

GIDEON FRISBEE.

Witnesses:

R. O. MITCHELL, L. VIERLAND.

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