US2692734A

US2692734A - Stone crushing mill, including a stationary inclined floor and an overlying vibrating upper section

Info

Publication number: US2692734A
Application number: US216580A
Authority: US
Inventors: James L Brickley
Original assignee: ALVA BETTIS; JOHN RITCHEY GOULD
Current assignee: ALVA BETTIS; JOHN RITCHEY GOULD
Priority date: 1951-03-20
Filing date: 1951-03-20
Publication date: 1954-10-26
Anticipated expiration: 1971-10-26

Description

Oct. 26, 1954 J. L. BRlcKLx-:Y 2,692,734 STONE CRUSHING MILL, INCLUDING A STATIONARY INCLINED FLOOR AND AN OVERLYING VIBRATING UPPER SECTION Filed March 20, 1951 3 Sheets-Sheetl ATTORNEYS.

Oct. 26, 1954 .1. L. BRICKLEY 2,692,734

Filed. March 20, 1951 STONE CRUSHING MILL, INCLUDING A STATIONARY INCLINED FLOOR AND AN OVERLYING VIBRATING UPPER SECTION 3 Sheets-Sheet 2 #m4/Ne ct. 26, 1954 1, L BRlCKLEY 2,692,734

STONE CRUSHING MILL, NCLUDING A STATIONARY INCLINED FLOOR AND AN OVERLYING VIBRATING UFPER SECTION Filed March 20, 1951 -3 Sheets-Sheet 5 JJLW INVENTOR,

l BY l] 1 f f ATTORNEYS Patented Oct. 26, 1954 STONE CRUSHING MILL, INCLUDING A STA- TIONARY INCLINED FLOOR AND AN OVER- LYING VIBRATING UPPER SECTION James L. Brickley, Spokane, Wash., assignor, by direct and mesne assignments, of one-third to Alva Bettis, yand one-sixth to ,lohn Ritchey Gould, both of Spokane, Wash.

Application March 20, 1951, Serial No. 216,580

5 Claims.

This invention relates to a stone crushing mill, so designed and operated as to reduce rock or stone to a ne powder upon the passage of the rock therethrough.

An important object of the invention is to provide a mill of this character including a stationary inclined floor section, and a movable vibrating upper section which operates to crush rock by an impact action produced by the upper movable member striking the rock deposited on the stationary door section, as the rock moves thereover.

Another object of the invention is to provide an upper movable crushing member including a plurality of independent sections held together as a unit, in such a way that the sections may be readily and easily removed and replaced when it becomes necessary to repair or replace the sections.

A still further object of the invention is to provide means for creating and regulating the pressure of the movable crushing member towards the stationary floor member of the mill, to meet various requirements of use.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes l may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawings,

Figure l is a side elevational view of a stone crushing mill, constructed in accordance with the invention.

Fig. 2 is a plan View thereof.

Fig. 3 is a bottom plan View of the upper section of the mill.

Fig. 4 is a sectional View taken on line 4--4 of Fig. l.

Fig. 5 is a perspective view of the trough into which the rock to be crushed is deposited prior to being fed onto the inclined stationary floor section of the mill.

Figure 6 is a side View of the upper vibrating section of the mill.

Referring to the drawings in detail, the rock crushing mill comprises a base 5 to which the adjustable leg members t and 'I are connected.

The leg members 6 and 'I have their lower ends connected with the angle bars s that are secured to the base 5 by means of the bolts 9, the angle bars 8 having openings l0 which ac- 2 commodate the bolts Il that pass through the leg members 6 and l removably and adjustably securing the leg members to the base, so that the angle of the mill may be varied to meet various requirements.

The opposite end of the mill is supported by the stationary leg members I?. that have brackets I3 secured thereto, to which the arms It are connected, the arms I4 being also secured to the bar l5, forming a part of the frame in which the screen I is mounted. The bar H provides the opposite side oi the screen, and this bar il is secured to the upper ends of the brackets IS, supporting the screen directly under the discharge end of the mill.

The leg members 6 are connected with the leg members l, at their upper ends, by means of the shaft It, which shaft also extends through openings in the bars 20 providing a pivotal connection between the bars 20 and leg members 6 and l. These bars 20 are Welded to the outer surfaces of the side plates 2l, as clearly shown by Fig. l of the drawings.

At the opposite end of the mill is a horizontal shaft 22 that extends through the leg members l2 and has pivotal connection with the bars 23 that are also welded to the side surfaces of the side plates 2! The bottom or stationary section of the mill comprises a plurality of longitudinally disposed bars 24 that extend throughout substantially the entire length of the mill, the bars 24. being held together between the side plates 2i, by means of the shafts 25, the shafts being provided With threaded ends on which nuts 26 are secured, to clamp the outer surfaces of the side plates and secure the bars 24 together. At the discharge end of the bottom or body portion of the mill is the plate 2l, over which the groundl material passes from the stationary section or bottom of the mill.

The reference character 21 indicates a yoke that depends from the upper end thereof, the yoke being provided with an extension 23 disposed intermediate its ends, the extension being provided with the threaded bolt opening 2i? in which the adjusting bolt 30 moves, the ad justing bolt 30 resting in the recess 3l formed in the enlargement 32 whereby the trough 33 on which the enlargement 32 is formed, may be adjusted vertically, to vary the inclination of the trough to regulate the flow of rock into the machine. The forward end of the trough 33 is so constructed that it will rest on the upper edge of the stationary bottom of the machine.

The inner or movable section of the mill comprises a plurality of spaced wide at steel bars 34 that are set on edge and bolted together by means of bolts 35 held in place by means of the nuts 36, the bars 34 being held in proper spaced relation with respect to each other by means of the spacers 31. Secured to the lower surfaces of the parallel spaced bars 34, are the crushing sections, each section embodying side bars 38 that are formed with bolt openings 39 in which the bolts 40 are disposed, the bolts 45 also passing through openings formed in the transverse bars 4| that rest on the upper surfaces of the bars 34, as clearly shown by Fig. 4 of the drawings. These bars 34 being arranged with their side faces disposed vertically, will penetrate or crush through the rock mass or feed ow traveling through the mill on the mill floor, during the operation of the machine.

Lower crushing bars '42 are welded to the bars 3B and extend transversely of the bottom. Thus it will be seen that by removing the bolts 45, the various sections of the movable crushing section of the mill may be readily removed and replaced. Bolted to the side plates 2 I, at a point adjacent to the lower end of the body portion of the device, are the bars 43 that are connected at their upper ends, by the bolt 44 on which the spacers 45 are positioned, the spacers engaging the upper ends of the spaced bars 46 that are welded to the yoke 41, at points intermediate the ends of the bars 46. The opposite ends of the bars 46 are provided with openings, through which the bolt 41 extends, the bolt 41 also eY- tending through openings formed in the upstanding bars 48 that are secured to the side plates 2l. Spacers 49 are disposed between the bars 48 and spaced bars 46, holding the bars 45 against moving longitudinally of the bolts 44 and 41.

The yoke 41 is provided with a threaded opening, through which the adjusting bolt 50 extends, the adjusting bolt having its inner end disposed ina recess of the member which is provided with an extension 52 that extends into the upper end of the coiled spring 53, which coiled spring has its opposite end positioned over the circular lug 54 that rises from the upper surface of the movable section of the mill, to hold the spring against displacement, with respect to the movable member of the mill.

Due to this construction, it will be obvious that by operating the adjusting bolt 50, the tension of the spring 53 may be regulated to vary the degree of coarseness of the rock which is being ground.

The outside sections of the spaced bars 34 are substantially long, and extend beyond the lower edge of the fbottom or stationary section of the mill, to which the bearings 55 are secured, the bearings 55 receiving the shaft 56 in which the shaft 56 operates. The shaft 56 is provided with the eccentric weights 51 that are secured to the shafts at points beyond the side bars 34 so that as the shaft rotates, the shaft will cause a vibration of the movable section of the mill to create a hammering action to crush rock by an impact action, rather than by direct pressure, since the fulcrum point of the movable section is the floor of the stationary section at the discharge end thereof. Thus it will be seen that the movable section of the mill will rise and fall above the floor of the mill at the intake end of the mill allowing material to be fed onto the stationary section.

Because of this construction, a cutting impact 4 crushing action is set forth upon the ore or rock under treatment, by the entire mass of these sections along with the gross weight of the top section of the mill which contains them, thereby resulting in a high capacity mill.

The shaft 5E, which corisiziiiuises` the power shaft of the mill, is operated by means of the power pulley 58 which is secured thereto, and over which the belt 59 operates, the belt 59 being operated by a suitable power plant not shown.

ICables 6D are connected with the movable section of the mill adjacent to the discharge end of the mill, while the opposite ends of the cables are secured to the stationary section of the mill, so that the movable section of the mill will be held against displacement, but at the same time will be permitted to vibrate freely to accomplish the purpose of the invention.

In the operation of the mill, rock toi be pulverized is fed into the trough 33, where it gravitates onto the stationary member of the mill, directly under the movable section of the mill. Since the vibrations of the movable section of the mill will cause the movable section to move vertically, the rock will readily pass onto the bottom or stationary section of the mill to receive the impact of the upper movable section, as it vibrates thereover. As the material is fed onto the bottom of the mill, the power shaft is operated to cause the movable section to vibrate as described with the result that the rock will be crushed by the impact of the upper movable section, and delivered over the extension 28 at the lower front end of the machine, to be delivered onto the screen I6.

Having thus described the invention, what is claimed is:

1. A rock pulverizing machine comprising an inclined stationary member onto which material to be pulverized is deposited, a vertically movable pulverizing member normally resting on the inclined surface of the stationary member, cables secured to the stationary member, said cables being also secured to the pulverizing member holding said pulverizing member against movement longitudinally of the stationary member in one direction, means for vibrating the pulverizing member in contact with material on said stationary member, pulverizing the material, and means for directing the pulverizing material from the machine.

2. A rock pulverizing machine comprising an inclined stationary base providing an upper .feed end and a lower discharge end, onto which rock is deposited, a pulverizing member including a plurality of spaced parallel members disposed within and arranged longitudinally of the base, certain of said parallel members extending beyond one end of the base, providing a fulcrum for said pulverizing member at the point of contact of said pulverizing member with said base at the discharge end of the base, a power shaft mounted on the extended ends of said pulverizing member, and weights eccentrically mounted on the power shaft effecting vertical rocking movement of said pulveriaing member against material deposited upon said base, as said power shaft is rotated.

3. A rock pulverizing machine comprising an inclined stationary member providing a lower end, onto which material to be pulverized is deposited, a vertically movable pulverizing member normally resting on the inclined surface of the stationary member, one end of said pulverizing member extending beyond the lower end of said stationary member providing a fulcrum for said pulverizing member at the lower end thereof, yieldable means for directing pressure on the pulverizing member adjacent to the lower end thereof, means for rocking the pulverizing member adjacent to the lower end thereof, mea-ns for rocking the pulverizing member vertically on its fulcrum, and means for holding the pulverizing member within the stationary member.

4. A rock pulverizing machine comprising an inclined stationary member onto which material to be pulverized is deposited, a vertically movable pulverizing member embodying a plurality of wide bars arranged with their side faces disposed vertically, said wide bars being disposed in parallel spaced relation with respect to each other, lower crushing bars connected with the parallel bars and disposed transversely thereof, said lower crushing bars resting directly on the bottom of said stationary member, said vertically movable pulverizing member having one of its ends extended beyond the lower end of said stationary member providing a fulcrum at the lower end of the stationary member for said pulverizing member, and eccentrically mounted weights rotatable on the extended end of said pulverizing member for vibrating said pulverizing member vertically crushing stone fed onto the stationary member.

5. A rock pulverizing machine comprising an inclined stationary member onto which material to be pulverized is deposited, a vertically movable pulverizing member operating within said stationary member, one end of said pulverizing member extending beyond one end of the stationary member providing a fulcrum with the stationary member at one end thereof, a power shaft mounted on the extended end of said pulverizing member, eccentrically mounted weights on said power shaft adapted to vibrate said puvlerizing member as said power shait rotates, a circular lug extending upwardly from said pulverizing member, a transversely disposed bar supported albove the pulverizing member in spaced relation therewith and secured to said base, a yoke rising from said bar, said yoke having a threaded opening, a vertically movable member mounted within the yoke, an extension depending from said vertically movable member directly over the circular lug, a coiled spring mounted on the circular lug and extension of said vertically movable member biasing the pulverizing member towards the base, and an adjusting bolt movable through the threaded opening of the yoke and contacting with said vertically movable member for tensioning said spring and regulating the pressure against said pulverizing member and means for vibrating said pulverizing member crushing stone deposited on the ibase.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 353,857 Hobart Dec. 7, 1886 1,441,147 Enders Jan. 2, 1923 1,632,124 Freiberg June 14, 1927 1,903,444 Earle Apr. 11, 1933 2,012,799 Zillgitt Aug. 27, 1935 2,187,273 Larson Jan. 16, 1940 FOREIGN PATENTS Number Country Date 670,608 Germany Jan. 21, '1939