US1067229A - Rock-breaking machine. - Google Patents

Description

G. KIMPLBN. ROCK BREAKING MACHINE. APPLICATION FILED DEO.12, 1910.

LUEKQQQW Patented July 8, 1913.

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Covw eZius fizlm vlen G. KIMPLEN. ROCK BREAKING MACHINE. APPLICATION FILED DEU,12, 1910.

LQQKQQQD Patented July 8, 1913-.

3 SHEETS-SHEET 2.

C. KIMPLEN.

ROCK BREAKING MACHINE.

APPLICATION FILED 13110.12, 1910.

Patented July 8, 1913.

3 SHEETS-SHEET 3.

liweai'on' Carr? ehus Z m zmw CORNELIUS KIMPLEN, OF

BOOK-BREAKING MACHINE.

Specification of Letters Patent.

Application filed December 12, 1910; Serial No; 596,813.

To all whom it may concern:

Be it known that I, CORNELIUS 'KIMPLEN, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented a new and useful Improvement in Rock-Breaking Machines, of which the following is a specification.

My invention relates to improvements in rock crushers and has as its principal object the simplification of operating and adjusting mechanism together with the strengthening of the main structure. I

The form of crushing jaws is improved and the entire device rendered more eflicient and safe by a structure which will be ex plained in detail.

. In the drawings with which I have illustrated my device and which form part of my specification, Figure 1 is an end elevation of my device; Fig. 2 is a section on the line XX, Fig. 1; Fig. 3 is a section on the line YY, Fig. 2; Fig. 4 is a partial plan 1 showing a single crushing unit; Fig. 5 is a side view partly in section of the connection of the lever and main shaft, and Fig. 6 is a section on the line ZZ, Fig. 5.

In the drawings I show a supporting structure made up of a base portion A, supporting pillars B, a head frame C and a hopper I). In the base is journaled the mainshaft 2 operating the lovers 3 of the operating mechanism carried by the head frame. The base 'A may be supported on any suitable foundation such as the timber frame E illustrated. The base A is a rectangular metal shell having top and bottom flanges 4 and 5 and walls 6 carrying the shaft 2 journaled' in boxes 7.' Ribs 8 are formed in the base to support the flanges 4 and 5 under the pillars and bearings. The bearing points of the shaft are formed with annular channels 9 separatingcylindrical bearings 10, 11 and 12, the diameters of the successive bearings decreasing toward the exterior of the frame. The box 7 fits the shafting and-has holes 13 for lubrication opening into an oil cup 14 in the frame. A pulley 15 is fixed to the shaft 2 at one end and is supplied with a drive belt 16 from any suitable source of power. A small drive pulley 17 is fixed to the shaft near the large pulley.

The pillars B are formed with cylindrical shafts 20 and top and bottom flanges 21 and '22 adapted to be bolted to the adjacent structure by bolts 23. The pillars B rest upon the top flange 4. of the base A above the walls thereof. The head frame C is a substantially rectangular metal shell having side walls 25 and a bottom flange 26 resting on the topflanges 21 of the pillars B. Ribs 27 carry the load from the wall to the pil: lars. The upper part of the frameis arch shaped, open at the top and formed with an upwardly extending neck having side walls 28 and end walls 29, which support the crushing jaws and their operating parts hereinafter described. The neck walls 28 and 29 carry a flange 30 extendin within and without the. walls, stiffening the latter and forming a support for the hopper D. The hopper D is an outwardly expanding rectangular rim resting on the flange 30 of the head frame and fixed thereto by set bolts 31, and fitted to hold a supply of rock above the jaws of the crusher.

I have shown a crusher having three crushing units which are similar in form and operation. The number of crushing units in no way effects my invention, and may be increased or decreased as desired, in making the machine. In the crusher which I have illustrated, the opening in the top of the head frame is divided by two bridges 32 into three oblong openings 33, 34.- and 35, substantially rectangular in form, lying transversely of the crusher. Against the end walls of said openings are fixed .the stationary jaws 36 of the crusher. These jaws are fixed to the side Walls 28 of the neck of the crusher by bolts 37 which pass through the walls into recesses 38 formed therein. The stationary jaws have their hearing against the walls 28 and each is formed with a median lug'39, on its bearing face 40 lying in the recess 38 of the wall. The lug has two forwardlyconverging plain surfaces 41 and 42 against which rest the beveledfaces of the nuts 43 on the bolts 37. The pressure of the nuts a 'ainst the convergent faces of the lug 39 ho] s the jaw 36 against the wall 28, and by increasing the pressure on one of the nuts and decreasing the pressure on the other, the jaw may be adjusted vertically on the neck wall. The lug is slotted vertically at 45 to receive the body of the bolt and allow the vertical movement of the jaw in adjusting it. The crushing face of the jaw is inclined toward the center line of the MINNEAPOLIS, MINNESOTA, ASSIGNOR T0 CARRIE A. SHOVE.

0F MINNEAPOLIS, MINNESOTA.

- Patented'July8,1 913.

crusher at an oblique angle which becomes more oblique in the lower part of the face and curves inward sharply at the lower extremity of the face. jaws 36 are cheek piecess46 fixed by stud bolts 47 to the bridges 32 and the neck' walls to present removable surfaces protecting these parts during operation of the crusher. On the center line of the crusher, the bridges 32 and endwalls 29 of the neck are formed with upstanding, lugs 48 which const tute an open topped caring 50 for the gudgeons 49 of the operating levers 3. Longitudinal movement of the gudgeons in their bearings 50 is prevented by the partition walls 51 rising above the lugs 48 at the ends of the gudgeons 49.

The operating levers 3 are massive metal bars of substantially rectangular cross sect-ion hanging vertical between the crusher jaws 36 and oscillating transversely of the crusher on the gudgeons 49 resting in the open bearings 50. The upper end on the lever is provided with a loop 52 by which the lever may be raised or lowered into position. The lower end of the lever is formed with a yoke 53 embracing an eccentric 54 on the operating shaft by which it is oscillated. The lever has economy slots 55 in its shaftto lighten the structure. At the upper end of the lever, below the gudgeons, the faces of the lever lying longitudinally of the crusher diverge downwardly and are formed with dove-tail grooves 56 which are narrower at the bot-tom than at the top and lie longitudinally of the lever and into which fit corresponding tenons 57 on the active crushing jaws 58. Each of the jaws 58 is formed to fill substantially the space between the cheeks 46 of the openings 33, 34, and 35 and has a crushing face 59; formed with an upper portion 60 at an obli ue angle with the axis of the lever 3 and a ower portion 61 curving back toward the lever. Each of the jaws 58 forms, with the opposed stationary jaw 36, a V shaped op of suitable dimensions may pass to be crushed. The curve 61 at the bottom of the movable jaw is shaped to form with the curve 62 of the stationary jaw '36, a passage gradually narrowing toward the bottom to allow the escape of material crushed to the desired dimensions. The curve of the movcontinued above the curve of the and the upward adjustment of the stationary jaw narrows the aperture 63 at the lowest point of the jaws, and produces a finer crushed product. By lowerin the fixed jaw 36 the aperture is widened an the size of the escaping fragments of material is increased.

The crushing faces of the opposed jaws are so designed that a gradually narrowing aperture is formed in which the material is crushed by the action of themovable jaw.

able aw is lower jaw,

At the sides of the fixed ening into which stone 7 This action is reduced by the oscillation of the lever 3 in t e bearings and is limited by the cam 54 on the shaft 2. .The cam 54 is roportioned to produce a lateral movement of substantially one-eightieth of the length of the lever 3 thus causing a very slightangular movement of the lever and an extremely slight transverse movement of the active crusher jaws 58 which as described, lie near the fulcrum of the operating lever 3.

The cam 54 is formed integral with the 0 erating shaft 2 and has a cylindrical sur ace 65 with beveled ends 66 extending to concentric cylindrical surfaces 67 of less diameter on either side of the cam, forming a broadly banded surface to which is fitted a split box 68 the parts of which are bolted together with bolts 69 at the top and bottom and slide on Babbitt bearings 70 in the yoke 53 of the lever 3. The lower end of the yoke 53 is filled at the sides by blocks 71 having upper ends 72 hollowed out to permit a considerable upward movement of the lever 3 upon the cam 54 in addition to that caused by the rotation of the shaft 2. Below the block 71 is a strap 73 to which the block 71 is attached and which is itself attached to the ends of the yoke 53 by bolts 74. A slight motion of the lever yoke is provided-for by spaces 75 between the cam 54 and the inclosing sides 76 of the yoke 53. Between the operating levers 3 fly wheels 80 are fixed to the shaft 2 adjacent to the levers 3.

Directly below crushingjaws are each side of the levers to the end on the head frame C where they empty through the end wall into aspout 82 for the delivery of the crushed material. The material falling through the apertures 63 drops into the troughs 81 and is transferred to the end of the machine by screw conveyers 83, the shafts 84 of which pass through the wall of the head frame and are operated by gears 85 fixed thereon. The gears 85 of the two screws 83 are driven by a pinion 86 journaled on a stud shaft 87 fixed in the wall of the head frame C. The pinion 86 is driven by a pulley 88 and belt 89 from the pulley 17 on the operating shaft 2. By removing the longitudinal trough 81 and placing a transverse tro h 9.0 under each pair 'of crushing jaws, ifierent materials and sizes may be crushed simultaneously in the crusher. The bearin s 50 are protected by a hood 91 which exten s longitudinally of the crusher restin on the br1dges 32 and the end walls of t e neck.

In operation material to be crushed is introduced into the hop r D in a sufiiciently divided state to entert e top of the aperture between the crushing jaws. The operating shaft being rotated, the operating levers are oscillated by the cams on the shaft and the the apertures 63 of the 53 longitudinally of the shaft troughs 81 extending on A caught between them and the fixed jaws 36,

is either crushed or spawled to the slightly lessened diameter required to meet the move ment of the jaws. Upon reversing the motion of the levers, the material so crushed or spawled is freed to fall to a point where it again fills the space between the open jaws, at which point it is again subjected to the slight crushing movement of the active jaws on their next stroke. It will be readily understood that the operation iscarried on by a succession of short crushing movements produced by slight forces acting upon levers having relatively long power arms. The rapid succession of short strokes is more eifectlve in crushing than longer slower strokes, and is very much more economical of power. As the material passes from the crushing jaws it is caught in the conveyor troughs and carried by the act-ion of the screw to the exterior of the crusher.

The introduction of any non-crushable material like pieces of iron, between the jaws of my crusher cannot injure the machine. Since the lever carrying the active jaws is free to rise a considerable distance from between the stationar jaws thus enlarging the aperture between t e jaws to allow the passage of the non-crushable material. Or if the material is too large to pass'out, the lever will hang in its raised position until the difliculty is noted and corrected.-

In accordance with the patent statutes I have described the principles of operation of my invention together with the ap aratus which I now consider to represent t e best embodiment thereof but I desire tohave it understood that the construction shown is only illustrative and that the invention can be carried out by other means and applied to uses other than those above set forth within the scope of the following claims.

Having described my invention, what I claim as new and desire to protect by Letters Patent is:'-

1. In a crusher, a supporting frame, a

suspended in an open journal bearing to oscillate between said faces and above them,

said oscillating member having crushing faces opposed to the crushing faces on the wall of said passage and adapted to have its weight and momentum directed downward on the material on each of said faces in the wall of said passage alternately, and means for oscillating said member.

In testimony'whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

CORNELIUS KIMPLEN.

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