US876892A - Ore-crushing machine. - Google Patents

Description

' No; 876,892. PATENTED JAN, 14, 1908.

J. B. ALBERS.

ORE GRUSHING MACHINE. APPLICATIO'N Hug) JUNE 11. 1906.

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No. 876,8 92. PATENTED JAN.14, 1903.

J. B. ALBERS. ORB 'GRUsHING MACHINE.

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No. 876,892. PATENTED JAN.1 4, 1908.

" J. .B'. ALBERS.

ORE GRUSHING MAGHINE.

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ORE-GRUSHING MACHINE.

Specification of Letters Patent.

Patented Jan. 14, 1908.

Application filed June 11. 1906- Serial No. 321277- To all whom it may concern:

Be it known that I, JOHN B. ALBERs, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Ore-Crushing Machines, of which the following is a specification.

It is the object of my invention to provide an ore crushing machine of great efficiency and of simple construction in which the ore shall be crushed between plates or jaws, one of which is horizontally movable and the other plate or jaw is vertically movable. I accomplish this object by the mechanism described herein and illustrated in the accompanying drawings in which Figure. 1.-is a side elevation. Fig. 2is a plan of half the machiine. Fig. 3.is an end elevation. Fig. 4.is a central vertical longitudinal section. Fig. 5.is a section on the line 55 of Fig. 4 of half the machine. Fig. 6.-is a section on the line 66 of Fig. 4 of half the machine. Fig. 7 .is a detail of one of the jaw operating levers.

In the frame 10 is revolubly mounted the operating shaft 11, on the end of which is pulley 12 to which power is applied to rotate the same. This shaft passes through an aperture 13 in the operating lever 14. Secured to said shaft within said aperture is cam 15 which is mounted on said shaft eccentrically. The outer end of the operating lever is mounted on shaft 16 secured in the frame. The operating lever is preferably composed of the metallic portions 14 and the wooden portions 14 which are secured together by bolts 17. The metallic portion may be of cast steel. The inner end of the cast portion projects beyond the wooden portion and is bifurcated, and the furcations project into recesses 18 in the crushing jaw 19 which is reciprocated vertically by the operating lever. .At the lower end of this jaw are the outwardly projecting lugs 20 (best shown in Fig. 3) which project into receses 21 in the metal bearing block 21 which is secured to timbers of the-frame. The lower portion of the wearing surface of this jaw is preferably composed of a removable wearing plate 22 and the central portion is composed of the reversible wearing plates 23 which are provided with lugs 23 which project from both faces thereof, so that when the lugs on one side become too much worn the plate may be turned and the lugs on the other side utilized. The upper portion is provided with the removable wearing plate 24 having lugs 24 on the wearing face thereof. The other crushing jaw 25 has on the lower portion thereof a removable'wearing plate 26, and on the upper portion reversible wearing plates 27 which are provided on both surfaces with lugs 27 as best shown in Fig. 5. The lugs of the wearing plates of the crushing jaws are arranged in vertical rows, with the rows of one plate moving intermediate those of the other plate. The outer edge of the lower portion of the sides of the crushing jaw 25 rest upon a metallic cross bar 28 which rests upon the timbers of the frame. The outer ends of this cross bar are much heavier than the intermediate portions and have apertures 28 extending horizontally therethrough, through which pass adjusting screws 29 which screw into bearing block 21. These screws have a groove 30 therein in that portion thereof which lies within the ends of the cross bar 28. These cross bars are provided with key-ways 31 at right angles to apertures 28 in which are received keys 32 which hold the screws from longitudinal movement in the bar but permit the same to be rotated. The other portions of the lower part of the sides of the crushing jaw 25 project downwardly to the plane of the bottom of the bar 28 and are provided with racks 33 which mesh with pinions 34, which pinions are mounted on shaft 35.

The lower end of plate 26 is supported by coiled springs 36. Bolts 37 have collars 38 secured thereto and have their outer ends threaded and passing in threaded contact through bar 28. There is one of these bolts near each end of bar 28 and the inner ends thereof project into the coiled springs 36 and the outer ends are squared for the reception of a wrench so that the tension of the springs may be varied, and the lower end of plate 26 held in yielding engagement with the lower end of plate 22.

As best shown in Fig. 4, the crushing jaws 19 and 25 are in engagement at the bottom thereof, but gradually separate to about the central portion thereof, and then more rapidly separate. The sides of the crushing jaw 25 overlap the sides of the crushing jaw 19 thereby forming a V-shaped crushing hopper. In the upper portion of the sides of jaw 25 are L-shaped sockets or openin s 39 in which are received the inner ends 0 the L- shaped jaw operating levers 40, which are pivotally mounted on shaft 41 which passes through jaw 19 back of plate 24 thereof. Shaft 41 also passes through brace bars 42 and is secured thereto by set screws 43 or other suitable means. The lower ends of these brace bars are mounted on shaft 1.6. Pitman rods 44 are pivotally secured by shaft 45 to lever 14. These pitman rods engage the outer ends of the jaw operating lever 40 and are held adjustably secured thereto by blocks 46 which blocks are secured to the levers by screws 47. p

In the operation of my machine power is applied to rotate the operating shaft, thereby oscillating the free end of lever 14 which causes the reciprocation vertically of the crushing jaw 19. At the same time through pitman 44 and lever 40 and connected parts the upper end of the crushing jaw 25 is caused to move away from and toward crushing jaw 19. Ore is fed into the crushing hopper and is crushed by the jaws thereof, one of which moves vertically and the other horizontally, whereby the ore in the hopper is turned so as to present its weakest crushing strain to the action of the jaws. It will be observed that by varying the size of the cam and the length of the operating lever, and the place therein at which the cam is mounted, a great variation can be made in the respective movements of the crushing jaws, and that by adjusting the lower end of aw 25 closer to or further away from the lower end of jaw 19 the ore can be crushed finer or coarser as desired. It will also be observed that by removing the keys which engage screws 29 the lower end of jaw 25 can be quickly separated from jaw 19 by means of the rack and pinion, and all material in the hopper can be emptied out of the same. By giving the operating lever a high rate of speed and. a slight movement a machine of great efiiciency is provided which can be operated with the minimum amount of power.

It will be observed that the top of the crushing chamber is not as wide as the bottom thereof, as thereby I provide a greater discharge capacity for the crushed ore, than would be the case if the width was the same at the top and bottom. By width I mean the distance across the crushing jaws and between the ends thereof.

It will be observed that the lower face of the vertically moving jaw 19 slopes downwardly and backwardly from the perpendicular line of the top portion of the jaw and that the face of the opposed jaw 25 slopes under jaw 19 and that the vertical movement of jaw 19, if there is ore between the jaws to crush, will force the lower end of jaw 25 back against the power of spring 36, thereby giving the ore between the jaws a rolling as well as a squeezing action whereby the weakest crushing strain of the ore is brought under the greatest crushing power of the jaws. It will also be observed that the upward movement of jaw 19 frees itself from contact with the ore and at the same time the movement of the top'portion of jaw 25 is away from jaw 19 so that the ore cannot jam between the jaws as jaw '19 moves upwardly and that no crushing of ore is accomplished on such upward movement.

Having described myinvention what I claim as new and desire to secure by Letters Patent is 1. An ore crushing machine provided with crushing jaws whose upper ends are more widely separated than the lower ends thereof mechanism to give one of said jaws a vertical motion and the top of the other jaw a movement toward and from the jaw having the vertical motion; and mechanism to hold the lower end of said last jaw in spring pressed engagement with the bottom of the vertically moving jaw.

2. In an ore crushing machine of the character described herein, an operating lever pivoted at one end thereof; a vertical crushing jaw verticallymovable and loosely engaged by the free end of the operating lever; and mechanism to oscillate the free end of the operating lever vertically,

3. In an ore crushing machine of the char acter described herein, an operating lever pivoted at one end thereof; a crushing jaw having projecting sides provided with recesses therein near the upper end thereof; a shaft passing through said recesses; L-shaped levers mounted on said shaft, said levers eX- tending within said recesses; supports for said shaft; and pitmen connecting the free end of said operating lever with said L- shaped levers; and means to oscillate the free end of said operating lever.

4. In an ore crushing machine a vertically moving crushing jaw having the up er and central portions of its crushing face ying in a vertical plane and the lower portion of the crushing face sloping downwardly and rearwardly from the plane of the other portions of the face; means to reciprocate said jaw vertically; an opposing jaw having a crushing face yieldingly held in contact with the face of the other jaw at the bottom and diverging therefrom to the top of the jaw; means to hold the lower end in yielding engagement with the opposed jaw; and means to move the upper end of said last jaw toward and from the upper end of the opposed aw.

5. In an ore crushing machine of the character described herein, a crushing jaw; mechhave hereunto subscribed my name this 29th anism to cause said jaw to reciprocate vertiday of May, 1906. cally; a second jaw oppositely disposed to said vertical jaw; and mechanism to move 5 the upper end of. said opposed jaw toward Witnesses:

and from the vertical jaw. G. E. HARPHAM,

In witness that I claim the foregoing'l EDMUND A. STRAUsE.

JOHN B. ALBERS.

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