US832801A - Ore-pulverizing machine. - Google Patents

Description

A. J. MILLROSS.

ORB PULVERIZING MACHINE. APPLIUATION FILED D110. a, 1902. RBNEWBD un. 14, 1906.

PATBINTTBD OCT. 9, 1906.

M. L d ymm To all whom t may concern.-

` UNITED sTATFs ALBERT J. MILLRoss, oF

PATENT OFFICE.

Los-ANGELES; CALIFORNIA, AssIGNoR oF ONE-FIFTH TO L. E. KNOLES, OF'LOS ANGELES,l CALIFQRNIA.

' i oRE-PuLvEnlzlNG MACHINE.

. Application liled December 8,

13e it known that I, ALBERT J. MILLnoss, a cltlzen of the United States, residing at Los Angeles, inthe county of Los Angeles and State of California, have invented new and vuseful Improvements in Ore-Pulverizers,` of which the following is a specification. ates to machines .for pulore or rock or other hard substances by hur ing the same repeatedly against an obstacle until thev substance being operated upon is reduced to the required ineness and then vpassesI out of the machine; and the objects thereof are to provide a machine of simple construction and of great efficiency that will reduce ore or any other hard breakable substance to any degree of fineness that may be desired. I accomplish these objects by the mechanism described herein land illustrated 1n the accompanying drawings, in which- Figure 1 is a slde view, partly in elevation and partly in section, of my machine. Fig. 2 is a plan of a fragment of the hurling-wheel. Fig. 3 is a vertical section on the line `u, a of Fig. 2. Fig. 4 is a plan of a fragment of one of the stationary breaker-rin s 6. f

In the drawings, 1 is a cy indrical casing which forms the vertical sides of the pulverizing-chamber and is secured to and supported b bod -frame composed of supports 2 2, of W 'ch t ere are preferably four .in number. To this easing and to the supports is secured by bolts 3 an annular supporting-ring 4, on which .rests the lower breaker-ring 5, the other1 breaker-rings being arranged thereabove and supported thereby. The breakerrings 6 are alike on both sides, and either side may be placed up. These rings are provided. ats'uitable distances apart with sockets 7 for the reception of the spacing-rivets 8, the thickness of the heads of which determines the distance of separation of the breaker-rings and the degree of iineness to` which the ore is pulverized or broken.' The thlnner the revet-head is the smaller the openlng or rlngs 1s and the finer the ore must be pulverized or broken before it will pass therethrough. These breaker-rin s are provided with clearance-notches 9 in t eir outer edges forthe assa e to the lower portion of the null of t e pu verized or broken ore or other substance which passes through vt e interstices between the breaker-rings. The in- My Invention re Specification of Letters Patent.l

1902. Renewed March 14. 1906. Serial No. 306.072.

l,discharge-outlet of the interstice between the. breaker- Patented oet. o, 190e.

ner surface of breaker-ring 5 is preferably smooth. The inner .surfaces of breakerrings 6 are provided with inwardly-projecting knobs 10, which are preferably s uare in cross-section and are so spaced that t e body of the ring is entirely or almost entirely protected from the direct impact of the body v being pulverized in the ulverlzing-chamber, the inner lining o`f whic is formed by these breaker-rings. The to of the lpulverizingchamber is preferably ormed of a lurality of top reducing breaker-rings 11 of) gradually-decreasing size, provided with sockets and knobs and spaced apart by rivets like rings 6. The purpose of this construction is topermit 'of pulverized ore escaping out of the pulverizing-chamber through the top. This construction is more convenient for handling and for transportation in tains on'animals than if the top were cast in one iece, also for( the replacement of parts shou d one part wear faster than another. On the top reducin breaker-ring rests a closing-plate 12, provided with an: ore-feed opening 13, through which ore is fed from hopper 14 into the'pulverizing-chamber. A swinging gate 15, which is automatically operated to open and close, is provlded to keep the .hopper closed when ore is not being 'fed into the chamber. The ore-feed opening and'discharge-outlet of the ore-hopper are lnclosed by a casing 16, having a removable through which water is fed into the machine when it is used for the center of the c osing-plate 1s an annular opening provided with a depending circular flange 12/, through which projects a depending circular flange 18 which is cast on the bottom of and integral bolted to the top frame 19, which top frame is adjustably secured to the body-frame by bolts 20, which pass through holes 21 or 22 or 23, as desired, to raise the top frame, the sides ofthe pulverizing-chamber being changed to correspond with the location of the topf frame, so that more breaker-rings may be put in and the size of the pulverizingchamber enlarged.

Through box 18 passes the vertical Iotatable operating-shaft 24, which is surrounded in the box by packing 25, preferably of brass. Below the box is screwed upon the shaft an annular drip-cup 26, which will catch and the mounlp ulverizing wet ores. In 4 plug 17 in the top thereof,

with box 18, which is' IOC number; but any other number'may beused which will give sufficient rigidity.l Resting upon the inner ends of these spokes and having depending portions d therebetween and surrounding the operating-shaft is the tubular jacket d, the bottom portion of which is flaring, as shown. In the edge of the flaring base are sockets d', in which the inner ends of rods e rest. On these rods are mounted hurling-segments f and g, the alternate sections f being provided with upwardlypro-4 jecting knobs f preferably squarein horizontal cross-section and having curved faces, as 'shown in Figs. 2 and 3. These knobs are preferably 'of unequal 4height,vand the faces `thereof curve toward the operating-shaft and toward one edge of the segment, so that when the ore strikes the face of the knob it is given a twisting motion, like the motion im-v parted to a bullet fired from a rifle. The other segments g have, preferably,a smooth face, but may be provided with knobs, if desired. 4These knobs may be of any desiredj but I prefer the form described here- 1n, as it gives the ore the motion which I 'think is bestadapted to cause it to disintegrate/when it strikes the breaker-rings. These segments are' provided with sockets fi in one edge thereof for the reception of rivets j, the

y same asv the breaker-rings, so that they may Y be s acedor separated tothe same extent as the reaker-rings' ,to permit the`pulverized or broken ore to pass out therebetween. The

outer ends of rods e are passed into holes in an annular rin 'h before the inner vends are dro ped into t e sockets. Ring' h is bolted to t e vouter ends of the radial spokes, which are preferabl steel bars with their outer ends turned as s own. After the hirling-segments are in placenan annular ring c,hav`ing an upwardly-turned flange k', which projects up under the'breaker-ring 5, is bolted to the radial spokes.I An annular ring l is then dropped upon .the inner Yends of the hurlingsegments and secured to the bottom of jacket d by screws which pass 'through a vertical slot, so that ring l may be adjusted vertically when the openings between the edges of the segments are increased or -diminished in size, and thereby hold the inner ends firmly in place. In practice I prefer to make the hurling-segment of cast-iron and cast it with the rods e in place therein. Below the hub of the hurling-wheel the operating-shaft is provided with pulley 29, to which power is applied to rottte the shaft. Any other means may be used to impart motion thereto, such as a bevel-gear. The bottom `of the operatingshaft is mounted in boxl 30, having packing 31 of brass or other suitable material, therein. The opposite sides of box 30 are provided with depending legs 30 which straddle the adjusting-wedge 32 and supporting-brace33. The supporting -brace is preferably of U- shaped iron and has stops 33 fastened on the outer sides thereof on both'sides of the legs 30 of the box 30 and is bolted at itsouter ends to the supports 2. These stops revent the box 30 from moving laterally. casing 34 is provided to prevent the pulverized ore from alling upon pulley 29 and into box' 30 and surrounds the same except at one point, whereit has an opening inthe side for the passage therethrough of a belt to operate pulley 29. At this opening it is joined byabeltprotecting casing 35, which runs tothe outside of the lower partof the outer casing of thel machine. The upper ,ortion of casing 34 is preferablycone-shaped), so that the pul- 'verized ore will not lodge thereon, and this casing is provided with a bottom 37. The lower part of the outer casing is made u-p of segments, a small section 36 directly be- 4neath the slanting portion of supports 2, be' ing stationary and being rovided with a groove 36 in the vertical e ges thereof, into which groove the edges of sections 36 may be dropped into place. The u per part 38 of the outer casing is of `suitable shape to slip ioo down over the upper portion of the mill and rest on the lower section. Should the bottom of the operating-shaft wear of, the shaft may be adjusted by the Wedge 32, which is provided with a rotatable but not longitudinally-movable bolt 39, the inner end of which is threaded and works in a'thieaded socket 40 in the end of the wedge. This bolt has an operating-wheel 41, by means of which it is rotated. Supports 2 2 are bolted to sills 42.

In-the operation of my machine power is applied to revolve shaft 24, carrying wheel IIO.

r28, and ore is fed into the pulverizing-chamv ber. .When the `ore strikes Wheel 28, it is hurled against the breaker-rings and is disintegrated bythe impact, falling back upon the wheel and being again hurled against the breaker-rings until it is fine enough to ass through the interstices between'the brea errings or the segments of the hurling-wheel.

'iIt will be observed that the velocity of the hurling-wheel creates air-currents through the interstices, which carry the pulverized ore therethrough. It will be observed-that the interstices between the breaker-rings and the segments of the hurling-wheel and the rings of the top can be adjusted' to any desired size by the thickness of theheads of the rivets which drop into the sockets of the res ective parts andI that by this adjustment the same 'mill may be used for pulverizing rock to a powder or for breaking it up into small pieces' It Will also be observed that the size of the pulverizing-chamber can be enlarged or diminished by putting in or taking out one or more of the breakerlrings. After the ore is pulverized or broken to the required fineness it passes out of the pulverizing-chamber and falls into a suitable receptacle (not shown) below the sills.

Having described my invention, What I claim as new, and desire to secure by Letters Patent, is- .Y

1. An ore-pulverizing machine comprising a frame having in the upper ortion thereof an ore-pulverizing chamber t e inner lining of the sides and top of which chamber is composed of stationary separated breaker-rings, said rings having on the inner faces thereof inwardly-projecting lugs, and the side rings having clearance-notches in the outer edges thereof, the bottom of said composed of a rotating hurling-Wheel rigidly mounted on a vertical shaft, said wheel being composed of separated segments having on the upper faces of the alternate segments upwardly-proj ecting lugs.

2. An ore-pulverizing machine having a frame, a rotatable vertical shaft mounted in said frame; a hurling-Wheel on said shaft the upper face of said Wheel. being composed of separated segments, the alternate segments having upwardly-projecting lugs; horizontally and,I separated breaker-rings surroundchamber being ing said shaft above said Wheel, said rings I forming the sides -of the ore-pulverizing chamber and having lugs on their inner faces and clearance-notches in their outer edges; a top resting on said rings composed of separated reducing breaker-rings and a central closing-plate having an ore-feeding aperture therein; a casing and ore-hopper forming a closure for said aperture.

3. In an ore-pulverizing machine the combination of a central vertical rotating shaft; a hurling-Wheel affixed to said shaft, the upper surface of Which Wheel is composed of separated segments, the alternate members of which are provided with upwardly-projecting lugs Witha casing surrounding and projecting above said Wheel, said casing having alining composed of horizontally and separated' breaker-rings having on the inner faces thereof inwardly-projecting lugs, the rings forming the vertical portion of the lining having clearance-notches in their outer edges. y

4.' In an ore-pulverizing machine a central vertical revoluble shaft having affixed thereto a hurling-Wheel the upper surface of Which said Wheel is composed of sectoral plates hav ing overlapping, separated, radial edges, in combination with a stationary pulverizingchamber.

yIn Witness that I claim the foregoing I have hereunto subscribed my name this 17th 'day of ovember, 1902.

ALBERT J. MILLROSS.

Witnesses:

' G. E. HARPHAM,

HENRY T. HAZARD.

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