US1549555A - Crushing apparatus - Google Patents

Description

Aug. 11, 1925.

O. E. JORGENSEN CRUSHING APPARATUS Filed July 5, 192g 6 I A Z 2 A WWI/113% IIIII/ O. t m w m d Patented Aug. 11, 1925.

UNITED STATES PATENT" OFFICE.-

OLAV ESKIL JORGENSEN, OF FOREST HILLS, NEW YORK, ASSIGNOR, BY MESNE AS- I SIGNMENTS, '1'0 ALLIS-CEALMERS MANUFACTURING COMPANY OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE.

can-sums APPARATUS.

Application filed July 5,

SEN, a subject of the King'of Denmark, re-

siding at Forest Hills, county of Queens, and 5 State of New York, have inventedcertain new and useful Improvements in Crushing Apparatus, fully described and represented in the following specification and the accompanying drawings, forming a part of the 1 same. I

This invention relates to improvements in crushing apparatus of that type employing a swinging head and in which the crushing pressure is produced or controlled by 1 centrifugal force. 5

It is one of the principal objects of the invention toprovide a crushing apparatus adapted to fine crushing and capable of a large capacity and a high ratio of reduction.

It is a further object of the invention to provide a crushing apparatus that is more economical to manufacture than existing machines of a like capacity.

With these general objects in view the invention consists in the combinations, details of construction and arrangements of parts which will first be described in connection with the accompanying drawings and then more particularly pointed out.

In the drawing:

Fig. 1 is a view in vertical section, with parts broken off, of a crushing apparatus 'constructed in accordance with the invention, showing the pendulum in operating position; I

Fig. 2 is a sectional view taken line 2-2 of Fig. 1;

Fig. 3 is a vertical sectional view, with arts broken off and parts'in dia am, of a modified construction, the pendu um being shown in a position of rest; and 1 Fig. '4 is a detail view showing in cross section the universal joint indicated diagrammatically in Fig. 3.

Referring'to the drawing, in the embodion the ment illustrated as an example, a base 11 supports a casing or shell 12 having sectional liners or concaves 13. This shell, with its liners, forms the crushing chamber 14'. Located in the crushing chamber and coacting with its concaves to crush the matecharge chute 10.

' bearing from dust, there is provided, in the the diameter of a conical race 33 formed on 36' on a drive shaft 37 rotated b 1922. Serial No. 572,788.

rial is a crusher head 15; This'.head, as here illustrated, comprises a conical headcenter 16 on which is mounted a conical mantle 17 a nut 18 securing the mantle in place. With the construction described the mantle may be made of a special and hard metal and may be readily renewed when desired. Below the crushing chamber is a dis- There is provided a universal suspension for the crusher head and this may, for example, include a ball and socket bearing. Although capable of various constructions, in that shown in Fig. -1, the head-center 16 has an upwardly extendin hollow shank 19 inwardl shouldered at t e top to rest on the socketed block 20 of a ball and socket bearing. Block 20 bears on a ball element 21 which has a shank 22 hung by a nut 23 from a bracket 24. This bracket is secured to a hub 25 connected by arms 26 with a spider 27 bolted to a flange28 on shell 12.

In order to protect the ball and socket present exemplification,.a cylinder 29 of rubber, or the like, seated between a shouldered bushing 30 and the bracket 24, the bushing being supported on a shoulder 31 on the shank 19. This rubber cylinder also tends to keep the axis of movement of the crusher head on the axis of the apparatus. 7

The invention includes a weighted body, for example, a pendulum, rotatable on its own axis within the crusher head, and free to shift. its axis under centrifugal force, the

crusher head being actuated by the direct contact of the rotating body as the latter rolls on an interior race in the crusher head. Although capable of various constructions,

in the embodiment illustrated in Fig. 1,

within the crusher head is a pendulum 32, conical in shape and of a'diameter less than the interior of the crusher head center 16. There is provided ,a flexible driving connection for the pendulum. As here shown as an example, the shaft of the-pendulum has a yoke 34 pivotally pinned to a coupling 35. This coupling is p1votally pinned to a yoke a motor indicated at 38. The construction described forms a universal joint betweenmoto r shafk and pendulum whereby the latter may be rotated, and at the same time have a universal movement.

When the pendulum is rotated at high speed thecentrifugal force developed causes it to swing out, so that the conical portion runs on race 33, as shown in Figs. 1 and 2, whereby the crusher head is actuated in the crushing chamber. This actuation of the crusher head causes the material, fed to the chamber 14 through he openings between arms 26, to be crushed between the concaves 13 and the mantle 17 of the crushed head.

The particular construction of pendulum and race here described, embodying conical contacting surfaces, reduces wear to a minimum.

To facilitate starting the crushing operation, there is provided means for preventing the pendulum from taking a vertical position. Although capable of various constructions, in the embodiment shown in.

Fig. 1 the crusher head-center has a bottom cover 40 on the inside of which is centrally located an abutment 41. On the bottom of the pendulum is a knob or projection 42 arranged to engage abutment 41, whereby the pendulum is held out of a vertical position even when in a state of rest.

In Fig. 3 is illustrated a modified construction. In the exemplificatio-n shown, seating in and threaded into hub 25 is a socketed block 45 which receives a ball element 46 for suspending the crusher head 47. This ball element has a recess 48 in which is hung the shank 49 of the crusher head by means of a nut 50 threaded onto the shank. To protect the ball and socket bearing from dust, embracing the shank 49 is a stuffing box 51 secured to block 45 and having a packing ring 52. A gland 53 serves to press the packing against the shank. Clamped by a ring 54 to the hub 25 is a flexible shield 55, its other edge being clamped between stuffing box 51 and gland 53.

Rota table within the crusher head is a pendulum 56 having a spherical portion 57 for-running on a cylindrical race 58 formed on the inside of a crusher head center 59. The shaft 60 of the penduluniis mounted in a block 61 and is connected by a universal joint 63 with a drive shaft 64 driven by a motor indicated at 65. The block 61 carries a race 66 and the }ball element'46 carries an arcuate race 67 Between these races are ball bearings 68.

When shaft 64 is rotated it will rotate the pendulum on its own axis, the pendulum havlng a universal freedom of movement from approximately the point indicated by the dot 1, and permitted by a small amount of lost motion due to the recess 69 in the universal joint. By the centrifugal force set up, the pendulum swings out so that its spherical surface 57 runs on race 58, thereby causing vibration of the crusher head.

The operation of the apparatus wlll be clear from the above without further description.

What is claimed is:

1. In a crushing apparatus, a crusher casing forming a crushing chamber, a crusher head having a universal suspension and pro vided with an interior race, a pendulum within the crusher head of less diameter than that of the race and having a portion adapted to run on said race, a flexible driving connection for rotating said pendulum on its own axis, whereby the pendulum is caused to run on said race, thereby to'actuate the crusher head, a bottom cover on the crusher head, a central abutment on the in terior of said cover, and a projection on the pendulum for engaging with said abutment to hold the pendulum out of a vertical position.

2. In a crushing apparatus, a crusher casing forming a crushing chamber, a crusher head provided with an interior race and including a hollow shank, a support, a ball and socket suspension device for the crusher head of which one element is carried by said support and the other element receives the thrust of the crusher head shank, a yieldable, resilient sleeve embracing the shank adjacent the ball and socket suspension for excluding dust from the ball and socket and for holding the axis of movement of the crusher head on the axis of the 100 apparatus, a pendulum within the crusher head having a portion "adapted to run on said race, and a flexible driving connection for rotating said pendulum on its own axis. 3. In combmat on, a; casing forming a crushing chamber, a crusher head gyratable driving connection for rotating said pendulum on its own axis whereby said pendulum is caused to run upon said race to gyrate said head, an abutment disposed centrally of said head, and a projection on said pendulum engageable with said abutment to hold said pendulum out of central position with respect to said head.

4. In combination, a casing forming a crushing chamber, a head gyratable within said chamber and having a bore, a pendulum adapted to roll within the bore of said head, means for rotating said pendulum about. its own axis to cause the same to roll upon said bore and to gyrate said head, an abutment secured to and disposed centrally 5. In combination, a casing forming a crushing; chamber, a universally suspended crusher head gyratable within said chamber and having a central bore, a pendulum disposed within said head, a flexible driving connection for rotating said pendulum upon its own axis to cause the same to roll upon said bore to gyrate said head, an abutment secured to said head and, extending upwardly toward said pendulum, and a projection at the lower extremity of said pendulum engageable with said abutment to hold said pendulum out of alinement with the axis of said head.

In testimony whereof, I have hereunto set my hand t OLAV ESKIL J ORGENSEN.

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