US1402255A - Crusher - Google Patents

Description

E. L. SANBORN.

CRUSHER.

APPLICATION FILED FEB. 18. I918.

Lggg g55 Patented Jan. 3, 11.922

.W/T/VESSES.

g STATE-S Par-ENE EUGENE L. SANIBORN, F MILWAUKEE, WISCONSIN, 'ASSIGNOR T0, SMITH ING WORKS, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

I cansnnn.

Application filed February 18, 1918. Serial No. 217,959.

To aZZ whom it may oofrwe'm:

Be it known that I, EUGENE L. 'SANBORN, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of W isco sin, have invented new and useful Impro ements in Crushers, of

which the fbllowing is a description, referfixed vertical central shaft forming a tierod connecting the arch of the upper sec tion of the frame with the base formlng the lower section of the frame, the shaft constituting a fixed mandrel for the crusher head andits operating sleeve. The invention particularly relates to that type of crusher in which the crusher head is broad and flat though conically shaped and the concave is downwardly flaring to enlarge the diameter of the circular passageway for crushed material toward its lower or discharge end, where the crushing faces most nearly approach eachother. v

In mathines of thi charager it is desirable to ake the frame mit the entry and removal of the crusher head.- It is also desirable to rovide an adjustment for varying the distance be-' .tween the crusher head and the concave in order that the degree of fineness of the work may be regulated.

It has been'proposed to form :thehead in two parts, one telescoping theother, and

adjustable with relation tov the other to raise and lower the crushing surface in the manner shown in the patent to Thomas L. Smith for rock crushers No. 1,050,398, dated Jan. 14, 1913. I posedto permit the crusher head to rest on an adjusting ring having" stepped cam faces, in the manners'hown in the patent to E. B. Symons for stone crusher, No. 1,000, 049, dated August 8,1911. It has also been proposed to provide for adjustment between whereby the concave may be raised and lowered with respect to the crusher head in the manner covered by my. joint application. with Thomas L. Smith for reduction crushers, Serial No. 129,665, filed Nov. 6, 1916, Such methods of obtaining the desired adable between. the concave and the supporting base to peracross the hopper. I 15 issecurely fixed at its upper and lower It has further been pro-- shaft and the walls of 1 justment haveanswered the purpose 'well in actual practice, but for larger and heavier crushers greater rigldity of frame structure is desired, as well as a simplification of the crushing head structure whereby it will consistiof a singlemember instead of telescoping members, and on account of the g'reatweight of the crushing head it is desired to provide a more powerful adjusting means which will retain its adjustments. The present invention, therefore, seeks to Specification of- Ietters Patent, Patented Jan. 3, 1922. I

provide the necessary adjustment by raising. v and lowering the end thrust bearing ring on Which the crusher head rests so that the crusher headis moved bodily toward or away from the concave, such adjustment being accompllshed by means of jack screws and being maintained by means of shims fitting frame;

With'theabove and other objects in view, the invention consists in the crusher, its parts and combinations. of parts as herein between the bearing ring and thebase claimed and all equivalents.

Referring to the accompanying drawing which represents a centralvertical sectional ance with this invention, 10 indicates a base frame to whichis rigidly clamped an up-' per frame section 11 forming the support for the downwardly flaring concave 12 and also forming theho or 13 andtthe arch 14 n upright rigid shaft ends in the arch 14 and in the baseglO. re-

view of a crusher. constructed in accord spectively. For this purpose it is preferred to taper the ends of the shaft 15 and sur round them with correspondingly shaped bushings 16 which have radial slots at their upper and lower edges alternating and extending nearly the full length of the bushings so as to make them flexible. Nuts 17 threaded on screw studs 18 at the ends of the shaft "en age' followers 19 and force them against t e bushings -16 to crowd said bush-- ings between'the conical portions .of the the cylindrical bores the arch and base. the upper section of the frame and the base 'on meshing with a beveled pinion 22 on the end of a drive shaft 23 which is driven from any suitable motor bymeans of a belt pulley 2A. A bell-shaped crusher head 25 fits around the sleeve 20 which is eccentric to impart a gyratory motion to the crusher head. The crusher head is supported by a bearing ring 26 which has a downwardly extending annular flange fitting within a" cylindrical upstanding wall 27 on the base around the beveled gear 21 and forming an enclosing housing for the gears to protect them from dust and dirt. The crusher head has a bearing plate 28 resting flat against the horizontal bearing surface of the ring 26 with a broad bearing surface for supporting the weight of the crusher head and resisting the stress thereon incident to the crushing operation. A number .of jack screws 29, preferably threethough only one member and bearing on the dust collar. It is not desirable to support the crusher head the shims chosen, so that the weight of the 40,

is shown, are threaded through the upstanding cylindrical wall 27 and bear against the bottom surface of the flanged bearing ring 26 for raising and lowering said bearing.

ring and the crusher head supported there- 'by. In these adjustments the crusher head merely slides on the eccentric sleeve 20, while its dust ring 30 bearing onits upper end and let into a groove in the arch 14, moves with it as permitted by adjustments of set screws 31 threaded through said arch in its adjusted position solely'by means of the jack screws 29 and consequently arcshaped metal blocks or shims 32 are fitted in the space between the bearing ring 26 and the, top of the cylindrical wall 27. There may be a number of these shims of different thicknesses to select from so that inany. particular adjustment of the crusher head this space is closely fitted by means of crusher head and the stress imposed on it during the crushing operation will be taken by the shims direct, to the relief of the jack screws. A metal band 33 surrounds the space containing the'shims and as the flange of the bearing ring 26 forms the inner wall ,of such space, the shims are entirely en- ,ment with the cylindrical wall 27 in all ad closed and cannot work loose. The metal band 33 is preferably contractible with a clamping setscrew '34 connecting ears at its be clamped in place or end so t at it ma released as deslre The flange of the bearlng ring 26 .remains in telescopingengagejustments .of the crusher head to hold the earmg ring in placeand resist the lateral stress thereon incident to the gyratory movements of the crusher head supported by it.

In operation the rotary movements of the I eccentric sleeve '20 imparted to, it by the jeling in a circle within the. concave. frame, thou h formed in sections to permit drivinfg shaft'23 cause the crusher head 25 to move toward the concave at a point trav- The of the assem ling or removal of the crusher head and its associated parts on the rigid but when the adjustment is made upstandin shaft '15, is rigidly connected without a justment between its sections so that there can be no yielding or looseness with respect thereto. The heavy crusher head is supported directly upon the flanged bearing ring 26. with its plate 28 slidably bearin thereon over a broad flat surface and said bearing ring'is confined in place by its flange engaglng the upstanding cylindrical wall 27 and is adjusted to produce the desired opening between the crusher head and the concave by means of the jack screws 29. The jack screws/are suitable for use in raising and lowering the heavy crusher head to accomplish the desired adjustment, they are relieved 'of further duty by the insertionof the shims 32 to take the stress of operation and said shims are prevented from displace- ,ment by the surrounding retaining band 33.

The crusher of this invention is adapted for thorough lubrication, a gear pump 35 bein beve ed gear connection with the drive shaft '23 and serving to'pump. lubricant from a tank 37 through apipe 38 to a passageway in the frame leading to a bore within the upstanding shaft 15. From this bore extend radial passa eways to feed the lubricant to the bearing etween the said shaft and the sleeve 20, while openings 39 through the sleeve 20 register w1th the said passageways to conductlubricant therefrom to the bear- .ing between the crusher head and the sleeve.

The flat bearing of the crusher head on the bearing ring 26 and the dust ring 30 prethe crusher head with its upper internal diameter smaller than the diameter of the lower part of the crusher head so that the crusher head is incapable of being passed therethrough, a frame surrounding the conshown driven by a shaft 36 having cave, a base on which the frame is removably mounted to permit of the removal of the crusher head,v and a stationary shaft rigidly secured to the base and the frame for tying them together, saidcrusher head bfillg movably mounted on the stationary s a 2. In a crusher, a downwardly flaring con cave support, a downwardly flaring concave therein, a conical crusher head within the concave having a lower part of greater diameter than the internal diameter of the upper part of the concave'support whereby it is incapable of passing therethrough, a

base on which the concave support is removably mounted to permit the removal of the crusher head, an arch'across the upper end of the concave support, and a vertical shaft rigidly secured to the arch and to the base for tying them together, said crusher head being mounted on the shaft.

3. In a crusher, a downwardly flaring conical concave support, a downwardly flaring concave therein, a conical crusher head within the concave having a lower part with a diameter greater than the internal diameter of the upper part of the concave so that it is incapable of passing therethrough, a base on which the concave support is removably mounted to permit of theremoval of the crusher head, an arch extending across the upper end of the concave support, a vertical shaft clamped .to the base and to the arch for tying them together and relieving the connection between the base and the concave support ofthe' working stress tending to separate them, and a suitably driven eccentric sleeve surroundin the shaft and having the crusher head loose y mounted thereon.

4. In a crusher, a conical crusher head, a downwardly flaring concave surrounding the crusher head, a frame surrounding the concave, a base on which the frame is remov-- ably mounted to permit of the removal of the crusher head, a stationary shaft rigidly secured to the base and the frame for tying them together, and means for vertically adjusting the position of the crusher head on the stationary shaft.

5. In a crusher of the type wherein a conical crusher head is surrounded by a downwardly fiaring concave so that they are subjected to vertical stresses and wherein the concave is supported by a frame in sections separable along a line beneath the concave for permitting removal of the crusher head, a means to reinforce the connection of the frame sections and to take the said vertical stress comprising a central stationary vertical shaft rigidly secured at its ends to the frame sections and having the crusher head rotatably mounted thereon.

- In testimony whereof, I afiix my signature, in presence of two witnesses.

EUGENE L. SANBORN. Witnesses:

CHARLES F. SMITH, ALEXANDER LORN MUNRO.

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