US1020501A - Crushing and pulverizing machine. - Google Patents

Description

J. L. HILLBR. @RUSHING AND PULVERIZING MACHINE. APPLICATION FILED JAN. 13, 1912.

1,020,501 Patented Mar. 19, 1912.

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APPLICATION FILED JAN.13, 1912.

Patented Mar. 19, 1912.

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Il mm l I l I Il Ill I I l I l IJ Giro/buuf JOSEPH L. HILLER, OF MATTAPOISETT, MASSACHUSETTS.

CRUSHING AND PULVERIZING- MACHINE.

Specication of Letters Patent. Patented Mal. 19, 1912. l

Application led January 13, 1912. Serial No. 671,076.

j To all whom it may concern.'

to improvements in illustrated by way of example.

l' juste The invention has for its Obj ect to provide means for positively adjusting the pivoted grinding cage of the machine with relation to the hammers, to compensate for wear, and

`for other purposes.

The invention consists in a crushing machine provided with the cage adjusting mechanism hereinafter set forth and illustrated in` the accompanying drawing, in which- Figure 1 is a vertical sectional view, Fig. 2 a partial, vertical, sectional view of a modified arrangement, Fig. 3 a sectional view on the line 3-3 of Fig. 1, and Fig. et a detail elevation of the shock-absorber.

In the .said drawings, the reference numeral 1 designates, generally, the casing of the machine, which may be of'any desired construction and form, and in which is arranged the rotary hammer carrying shaft'2 to which is secured` the hammer-carrying disks 3, to which the hammers 4 are pivotally connected as is usual and known in the art.

5 designates what is known in the art as the grinding-cage, pivotally mounted in the easin at one end 6, so that it may be add to and from the hammers to compensate for wear, and for other purposes.

The free end of this cage 5 carries a vertically disposed segmental rack 7 the teeth of which are struck upon an arc that will permit the cage to be raised and lowered throughout any desired, contemplated or designed range of movement. The teeth of this segmental rack mesh with a rack wheel 8 carried bya shaft 9 suitably mounted in the casing, and it also carries a gear 10 0f `relatively large diameter and number of teeth which meshes with a gear 11 carried by the shaft 12, which is provided with a hand .wheel 13 for j manipulation of the mechanism. In Fi 1, the segmental rack 7 is shown carried y and rigidly connected to the free end of the grinding cage, and in Fig. 2 the corresponding rack 7 1 which preferably2 though not necessarily, is carried by and pivotally connected to the free end of said cage. As shown in Fig. 3, the rack wheel 8 has a hub 14 keyed to the shaft 9, and held'thereto by means of set screws 15.

Surrounding the shaft 9 or the hub 14, in the illustrated example of the invention, and loosely mounted thereon, is a shock-receiver composed of two sections 16, held together by means of bolts and nuts 17, as will clearly appearupon inspection of Figs. 1, 3 and 4. This shock-receiver is provided with fingers 18 which enter longitudinal grooves 19 formed in the sides of the rack 7 and serve the dual function of a guide for the rack to hold the rack in mesh with rack-wheel 8 (this function being chieiiy valuable when the rack is a pivoted one as in Fig. 2 of the drawing) and to limit the degree of adjustability of the cage by coming into contact with the closed ends 20 of the groovesy 19, which serve as abutments.

While, as hereinbefore stated, in the ractical use of such machines, wedging ofi-)coal between the edges of the cage and the casing of the machine prevents adjustment of the cage, except by some positive action of the cage-manipulating mechanism, yet when dislodgment of the impediment has been effected by the positive action, the weight of the cage is such that when free it responds to gravity with considerable force, and itis to avoid the Shock which would otherwise occur that the shock-receiver is loosely mounted on the shaft 9, and to cushion the fall a suitable shock-absorber is combined with said shock-receiver, in the example of the invention shown this consisting of suitable shoek-absorbing springs 21 arranged upon an arm 22 connected to the shock-receiver. The tension of the shock-absorbing springs may be regulated by means of the adjusting nuts 23.

In operation, when it is desired to raise or lower the cage, the hand wheel is manipulated and, through the medium of the speed gear 10, the cage may be moved positively in either direction, so that should coal or other refuse have become lodged between the edges of the cage and the casing of the machine the cage may, nevertheless, be manipulated. If, after such dislodgmentof any impediment to the movement of the cage, the latter should fall, under the influence of gravity, the shock Which would otherwise be incident to. the action, is relieved in the manner described, that is to say,'by the partial rotation of the shock-receiver, cushioned by the shock-absorbing springs, when its fingers meet abutments 20 at the ends of the grooves 19.

Having thus described my invention, what l. ltna crushing and pulverizing machine, the combination with a casing, hammers arranged for operation therein, a pivoted grinding-cage, a vertically disposed rack connected to the free end thereof, a rack-t Wheel in mesh With said rack, means for operating the rack-Wheel to positivelyunove the rack for adjustment of the cage, and yielding means arranged in the path of movement of said rack for limiting the movement thereof. l

2., In a crushing and pulverizing machine, the combination with a casing, hammers arranged for operation therein, a pivoted grinding-cage a rack pivotally carried by the free end thereof, a rack-Wheel in mesh With saidv rack, and means for holding said rack in mesh with said rack-Wheel.

3. In a crushing and pulverizing machine, the combination With a casing, hammers arranged for operation therein, of a pivoted grinding-cage, a rack connected to the free end of said cage and provided with abutments, a rack-Wheel meshing with said rack, and a shock-receiver and shock-absorber having parts to engage said abutments.

4. In a crushing and pulverizing machine, the combination with a casing, hammers arranged for operation therein, of a pivoted grinding cage, a rack connected to the free end of said cage and provided With longitudinal grooves, the ends of which constitute abutments for limiting the degree of adjustment of said cage, a shaft carrying a rack-Wheel in mesh with said rack, a shockreceiver loosely mounted on said shaft and having fingers engaging the longitudinal grooves of the rack7 and a shock absorber combined yvith said shock-receiver.

In testimony whereof I have hereunto setV y my hand in presence of tWo subscribing Wit- DBSSSS.

Josnrn n ninnnn. Witnesses JOHN PARKER, HAROLD R. HAMON.

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