US2127027A - Stone breaker - Google Patents

Description

g- 16, 1938- V c. v. HALLENBECK 2,127,027

STONE BREAKER Filed May 2; 1955 2 Sheets-Sheet 1 A9 1N VENTOR.

CHAPL 5 K HALLE/VEECA ATTORNEY.

16, 1933' I c. v. HALLENBECK 2,127,027

STONE BREAKER Filed May 2, 1935 2 Sheets-Sheet 2 'INVENTOR. (WA/PL 5 M HA1: fA/BfC/f JZIORNEY.

Patented Aug. 16, 1938 UNITED STATES PATENT OFFICE STONE BREAKER 1 Claim.

This invention relates to improvements in rock breakers of the type employed for breaking rock for macadam, for aggregate and for other purposes.

The principal object of this invention, generally stated, is to produce a breaker mechanism comprising a stationary jaw and a movable jaw, and in which the movable jaw has a movement, at the edge where the material is fed to the crusher, which is preponderantly a movement towards and away from the stationary jaw was to produce a pinching effect only on the large rocks, and which movement is combined with a downward component which increases towards the discharge edge, while the transverse movement decreases, until at the point of material discharge, the surface of the movable jaw has an up and down movement only.

Experience has shown that large rocks and boulders do not need a downward movement of the crushing jaw to feed them into the crusher jaws, but that they do need a maximum movement towards and away from the stationary jaw to produce the necessary pinching effect. As the stones are broken into small fragments, they require less pinching action and a greater amount of progressive movement, and my improved crusher is designed to produce such action.

The objects of this invention more specifically stated are:

To produce a rock crusher that operates with the least amount of ineffective movement;

To reduce the weight of the movable parts and the actuating mechanism to a minimum so as to reduce vibration;

To reduce friction to a minimum;

To simplify the construction by reducing the sizes and number of machined parts.

It is also an object of this invention to produce a rock breaker of such construction that it can be easily erected at any place where it is to be used so as to reduce the cost and labor required to change the location thereof.

Another object is to provide a rock breaker of such construction that the feed opening shall be as low as practicable so as to facilitate the feeding of material thereto.

A further object is to provide a rock breaker in which the stationary jaw shall have a crusher surface that is downwardly and forwardly inclined to such an extent that it will be self-cleaning.

A still further object is to provide a rock breaker of such construction that the bearings and mechanism connected with the movable jaw shall be located underneath the jaw for the purpose of reducing the total height of the machine.

The above and other objects that will become apparent as this description proceeds and to which attention will be called, are attained by means of a construction and an arrangement of parts that will now be described and reference for this purpose will be had to the accompanying drawings in which the preferred construction of the machine has been illustrated, and in which Figure 1 is a top plan View of the machine.

Figure 2 is a vertical section taken on line 2-2, Figure 1.

Figure 3 is a section taken on line 3-3, Figure 2.

Figure 4 is a section taken on line 4-4, Figure 2, and

Figure 5 is a side elevation of the machine, a portion of the side Wall being broken away to show the course of the material through the jaws.

The machine consists of a massive cast steel frame having spaced parallel side Walls 6 and 1, connected at their front edges by an end wall 8 whose surface 9 is downwardly and forwardly inclined. Along the lower edge of the end wall is a flange Ill whose upper edge is inclined so as to cooperate with the inclined lower edge of a removable crusher plate II. A removable wedge I2 is secured to the end wall by means of bolts l3, and serves to attach the crusher plate to the stationary jaw.

The sides 6 and l are connected at their rear ends by an end wall I4 whose upper edge has a .wide flange l5 that projects to both sides thereof, and which has an opening l6 through which the pitman l'l extends. Sides 6 and I extend rearwardly beyond the end wall l4 and are provided with bearings l8 for the ends of shaft 19, and with a central bearing l8a.

The rearwardly extending portions of the side walls are connected by an end wall 20. The sides 6 and I and the end Wall have wide flanges 2| along their lower edges on which the frame rests, and these are connected near the front end of the frame by a transverse flange 22. The ends of the side flanges 2| are curved upwardly in the form of sled runners so as to facilitate the movement of the machine.

The transverse flange 22 is provided with upwardly extending spaced lugs 23 that are perforated for the reception of a shaft 24 which also extends through openings in side walls 6 and 1. A movable jaw 25 is provided near its lower and forward end with downwardly extending lugs 26 that have openings through which the shaft 24 passes, and which are positioned between the lugs 23 and the side walls 6 and 'l, as shown in Figure 4.

The movable jaw is provided near its upper edge with downwardly extending spaced lugs that are perforated for the reception of a shaft or pivot pin 28, which also extends through an opening in the upper end of pitman ll, as shown most clearly in Figure 3.

The pitman has its lower end branched and the two branches 29 are positioned between bearings l8 and 18a and have bearings for the reception of the eccentric cylindrical portions 30 of the shaft l9. When shaft l9 rotates the jaw 25 will be rocked about the pivot 24 towards and away from the stationary jaw member. The upper surface of the movable jaw has a flange Illa that 00- operates with the lower edge of the removable crusher plate 3!, whose upper edge is secured to the jaw by means of a wedge l2a, as shown in Figure 2.

A shaft 32 extends between the sides 6 and 7 and carries a roller 33 for the conveyor belt 38. The shaft l9 has each end provided with a heavy fly wheel 34, and one of these may have a pulley 35 to which power can be transmitted for operating the machine, or the belt may be applied directly to one of the fly wheels.

When shaft I9 is rotated in either direction, the movable jaw is rocked about its pivot 24 through the action of the pitman and the cocentrics 30, and every point in the movable jaw will move in the arc of a circle whose center is the center the shaft 24, as indicated by arrows in Figure 2.

The movable jaw is provided with upwardly extending sides 36 which prevent crushed material or broken rock from falling over the edges of the jaw, and this prevents material from piling up underneath the jaw and protects the bearings located underneath the jaw.

When rocks are fed into the feed opening and pass or project into the space between the adjacent surfaces of the crushing plates H and 3|, they will drop down as far as their size will permit, and when the movable jaw approaches the stationary jaw, therocks will be broken into smaller pieces which will move farther down and will be again broken, and this will continue until the rocks have been reduced to such small pieces that they will pass through the space between the lower edges of the jaws and crusher plates and onto the conveyor belt.

If a large rock, like that indicated by reference numeral 37 in Figure 5, is delivered to the jaws, it will be raised and lowered by the movement of the jaw 25, and will be turned until the jaws succeed in getting a hold so as to break off a piece, after which the operation will continue until the large piece has been reduced in size sufficiently to permit the pieces to pass into the space between the jaws.

At this point, attention will be called to a very important feature of the construction, namely, the inclination of the jaws. From Figures 2 and 5, it will be seen that the crushing surface of the stationary jaw is downwardly and forwardly inclined, and this prevents crushed rocks and clay from sticking to the crushing surface as it ordinarily does if the crushing surface of the stationary jaw is vertical.

Since the material rests on the upper surface of the movable jaw, it is evident that the movement of material along the surface thereof will serve to keep the material from sticking. By inclining the crushing surfaces of the jaws as shown in the drawings, the height of the machine can also be greatly reduced with the consequent advantage to be derived therefrom.

The movement of the jaw 25, which is obtained by rocking it about a pivot located near its lower end and to the rear of the crushing surface, gives a downward movement to the material near the discharge edges of the jaws and an upward movement at the top which facilitates the crushing or breaking. The downward movement of the surface of the crushing jaw increases progressively towards the discharge edges, while the movement towards and away from the stationary plate decreases downwardly. This greatly reduces wear and gives improved efficiency as the downward component is not necessary until the rock has been reduced to small particles.

The sides 36 of the movable jaw overlap the edges of the stationary jaw, and these sides serve to protect the sides of the frame from abrasion and obviates the necessity of machined surfaces and liner plates.

A rock breaker like the one described above and shown on the drawings can be easily set up at the place where it is to be used, and being provided with inclined jaws it can be made very low so that the rocks can be easily fed thereto, and by supplying it with a conveyor as shown, the discharge from the crusher jaws can be very low as the material will not pile up beneath the laws.

What I claim and desire to secure by Letters Patent is:

A rock breaker comprising a housing having upwardly-ranging extensions of its base providing runners for facilitating its sliding movement over a surface on which it rests and having a discharge outlet adjacent its bottom and a feed inlet above the same, as oscillatory jaw disposed in 1 an inclined position between the inlet and the outlet with its breaker surface uppermost, a stationary jaw disposed in overhanging relation to the oscillatory jaw and having its breaker surface facing the latter jaw, the oscillatory jaw being 1 movable about an axis at its lower end, an eccentric journalled in the housing, a pitman on the eccentric in pivotal connection with and extending at right angles to the oscillatory jaw, and a movable conveyor disposed above the bottom of the housing directly beneath the discharge outlet to receive the product descending therethrough.

CHARLES V. HALLENBECK.

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