US2735627A

US2735627A - brickley

Info

Publication number: US2735627A
Authority: US
Publication date: 1956-02-21
Anticipated expiration: 1973-02-21

Description

1956 J. BRICKLEY ROCK GRINDING MILL 3 Sheets-Sheet 1 Filed May 15, 1953 JL. F

& wm v N w u aN INVENTOR ATTORNEYS 1956 J. L. BRICKLEY ROCK GRINDING MILL 3 Sheets-Sheet 2 Filed May 15, 1955 JL .Brz'ckley INVENTOR ATTORNEYS Feb. 21, 1956 BRICKLEY 2,735,627

ROCK GRINDING MILL Filed May 15, 1953 3 Sheets-Sheet 5 INVENTOR BY W.

ATTORNEYS United States Patent ROCK GRINDING MILL James L. Brickley,Spokane, Wash.

Application May 15, 1953, Serial No. 355,370

Claims. (Cl. 241-270) This invention relates to a rock grinding mill for reducing rock or stone into fine particles or a powder form upon the passage of the rock -or stone through the machine in a continuous operation.

Another object of the invention is to provide a rock crushing or grinding mill which isrugged in construction and well adapted for production at a relatively low cost and which is capable of grinding stone or rock in a continuous operation.

Further and more limited objects of the invention will appear as the description proceeds and by reference to the accompanying drawings in which similar parts are designated by similar reference characters-in which Fig. l is a view in end elevation of a mill embodying the features of my invention.

Fig. 2 is a'horizontal sectional view taken on the line 22 of Fig. l and Fig. 3 is a vertical sectional view taken on the line 3-3 of Fig. 1.

Referring now to the drawings my mill consists essentially of a lower frame or casing generally rectangular in shape and having front and rear Walls 11 and 12 and

end walls

13 and 14 which are formed of steel plates welded together at their abutting edges. Disposed adjacent the corners of the casing are four vertically disposed

channel irons

16, 17, 18 and 19 which are welded to the adjacent walls. Secured to the frame 20 at one side thereof is a spout 21 having side walls 22 and 23 and a bottom wall 24 between which are disposed vertically disposed bafiles 24a. Disposed intermediate the corner posts and welded to the front and rear walls 11 and 12 are four

vertical channels

25, 26, 27 and 28. Disposed at the front and rear of the frame and extending from front to rear thereof is a channel 29. A pair of horizontal transverse bars 30 connect the corner posts and the next adjacent intermediate vertical channels. The front and rear vertical channels are connected at the top by four

transverse channel bars

31, 32, 33 and 34 which are welded or bolted to the adjacent channel at the top thereof. Disposed inwardly of the wall 11 and extending parallel thereto and spaced therefrom is a Wall 110 which is welded to the adjacent wall. Extending at right angles to the wall 11a are a plurality of reinforcing partition plates 11b which are welded at their ends to the frame. The frame or hammer 20a is divided into a plurality of rectangular openings by transverse and longitudinally extending partitions Zilb all of such parts being welded at their points of intersection. This frame resembles an egg crate in plan view and has no bottom. This frame is mounted for reciprocation within the frame or casing 10 and strikes against a bottom member or anvil A supported by the walls 10 and 11a and reinforcing plates 11b. This bottom plate or anvil A is also welded to all intersecting or adjacent walls so as to withstand the shocks instant to the crushing operation. The reference character 35 designates a pair of L-shaped brackets which are welded to the horizontal bar 29 at the sides 2,735,627 Patented Feb. 21, 1956 2 of the frame and'project inwardly therefrom as shown inFig. 3. Each bracket 35 has vertically disposed slot therein which receives one end of a crossbar 36. A similar pair'of brackets 35a are secured to connecting bars 30 at the sides'of'the frame which slidably receive therein the opposite ends of a pair of bars 36. There are four coil springs '37 which surround bolts 37a on transverse plates 37b on the frame 20 at their lower ends. The upper ends of such springs 37 engage under 7 one of the outer ends of the crossbars 36 as shown in Fig. 3. These springs'tend to urge the frame 20 downwardly as seen in Fig. 3 and the tension of the springs may be increased by bolts 38 which are adju'stably-mounted in the brackets '35and35a.

Welded to the iwallll aand extending parallel thereto in spaced relation is a U-fshap'ed member 39 which extends substantially the full length thereof and which forms with the wall 11: a trough 40 the purpose of which will later appear.

Bolted to the upright channels Hand 25 are a pair of

brackets

41 and 42 in which is journalled a shaft 43 to one end of which is non-totatably secured a grooved pulley 44 which is'drive'n from a suitable source of power and to the other end of whichis'secured a crank or pitma'n 45to'which is connected one end of the pitman rod or link 46 the purpose of which will later appear.

Secured to the'top of the frame 20 at opposite ends thereof are a pair of transverse plates'47 each of which has an upstanding Web portion 48 and secured to each web-portion are a pairof parallel spaced arms 49 and 59 in which is journalled agrooved pulley or sheave 51. Pivotally secured'to the horizontal channel 29 is a link 52 the 'outer'end'of which is pivotally connected with the pitman rod 46. 'The reference character 53 and 53a designate a pair of beams or arms which are pivotally mounted intermediate their ends on the tops of

horizontal channels

32 and 33 respectively as seen most clearly in Fig. 1. Pivotally secured to one end of the arm 53 is a link 54 and pivotally secured to the other arm 53a is a link 54a. The lower ends of each of the links 54 and 54a. are pivotally connected with the link 52 intermediate the ends thereof by a pin 55. The other end of the link 52 is pivotally connected to the pitman rod 46 by a pin 46a. Secured to the end of the arm 53 remote from the link 54 is a wire rope 56 which extends around the sheave 51 and has its opposite ends secured to the crossbar 31. Secured to the end of the arm 53a remote from the link 54a is a wire rope 56a which extends around the other sheave 51 and has its opposite ends secured to the crossbar 34 as shown most clearly in Fig. 1.

It will now be seen that when the shaft 43 is rotated the pitman rod 46 will rock the bar 52 to impart a reciprocatory motion to the frame 20. The frame 211 is lifted against the compression of the coil springs 37 the tension of which can be increased when desired. As the entire frame 20 is thrust downwardly by the coil springs 37 it will be seen that any particles of rock disposed between the anvil A and the frame 20 will be crushed into smaller particles or reduced to powdered form. As the frame 20 is open at the bottom particles of stone lying within the pockets created by the partitions 20a and 20b will flow out on the top of the anvil A as the frame 20 is lifted. The grinding or cutting surface are provided by the bottom edges of the partition 20:: and 20b.

The manner of operation of the mill is as follows. The mill is set up so that the surface of the anvil is disposed at an angle to the horizontal and particles of stone are fed to the mill by a suitable feeder (not shown) which delivers the same to the inlet trough or spout 21 and water is also fed into the spout and across invention.

the anvil in the desired volume and rate depending upon the size of the particles of stone and the fineness desired for the finished product. The power shaft 43 is rotated at rather igh Speed of the order about 400 R. P. M. or higher depending upon the size of particles desired which is Controlled largely by increasing or decreasing the speed of the machine. Water flowing across the anvil removes the finer particles which flow out through the trough 40 and thence to screening or'grading equipment (not shown). Onefeature of my mill resides in the use of the heavy coil springs which serve to impart a rapid pending action to the hammer the speed of which may be readily 'varied without greatly increasing the horse power required. 7

It will now be clear that I have provided a rock grinding or crushing mill which will accomplish the objects 'of the invention as hereinbefore stated. Various changes may be made in the detailsjof'construction and arrangement of parts without departing from the spirit of my The embodiment of the invention herein disclosed is therefore to be considered illustrative and not in a limiting sense as the invention is limited only in accordance with the scope of the appended claims.

What is claimed is:

l. A rock crushing mill comprising a lower frame having a solid wall forming an anvil on which stone is crushed, an upper open frame overlying said lower frame and mounted for reciprocation relative thereto and adapted to crush particles of stone lodged on said anvil, spring means urging said upper frame downwardly into rock crushing contact with said anvil, powered means including a crank connected at one end to said anvil for intermittently raising said upper frame against the pressure of said spring means and then quickly releasing the same whereby particles of rock may be crushed on said anvil in a continuous operation by series of rapidly recurring sharp blows.

Arqsk r s i as defined i claim 1 iniwh h said open frame is in the form of an open sided grid having a plurality of closely adjacent openings through which particles of rock to be crushed are fed in a continuous operation.

3. A rock crusher comprising an anvil and a hammer overlying said anvil for imparting a series of rapidly recurring sharp blows to saidanvil, spring means urging said hammer downwardly toward said anvil and powered crank means for imparting a pounding motion to said hammer in opposition to said spring 'means, said hammer being in the form of an open sided grid having a plurality of closely spaced vertically disposed openings therein extending over the entiresurface thereof and through which the rock to be crushed is fed.

4. A rock grinding mill comprising a fiat surfaced anvil, and a superposed hammer, power mechanism to intermittently lift the hammer, and a spring device to increase the speed and inertia of the hammer on the impact down stroke, the hammer being in the form of an open latticed grid, the spring device being securely fixed in place relative to the anvil and under compression against the hammer in motion.

5. The mill of claim 4, in which the power mechanism includes a rotating shaft, crank, and connecting rod attached to an oscillatable beam or arm above the hammer.

References Cited in the file of this patent UNITED STATES PATENTS Germany May 27, 1895