US2487744A

US2487744A - Adjusting means for stationary jaws of duplex crushers

Info

Publication number: US2487744A
Application number: US691743A
Authority: US
Inventors: Roscoe H Waters
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-08-20
Filing date: 1946-08-20
Publication date: 1949-11-08
Anticipated expiration: 1966-11-08

Description

1949 R. H. WATERS 2,487,744

ADJUSTING MEANS FOR STATIONARY JAWS OF DUPLEX CRUSHERS Filed Aug. 20, 1946 3 Sheets-Sheet l ROSCOE H. WA TE}? 5', INVENTOR.

ATTD RN EYB Nov. 8, 1949 R. H. WATERS ADJUSTING MEANS FOR STATIONARY JAWS OF DUPLEX CRUSHERS I5 Sheets-Sheet 3 Filed Aug. 20, 1946 I EOSCOEMWA 75/25, INVENTOR.

Patented Nov. 8, 1949 UNITED STATES OFFI CE ADJUSTING .MEANS FOR STATIONARY JAWS F 'DUPLEX .CRUSHERS LOlaim. 1

My present invention relates to an improved adjusting means for stationary jaw of duplex .mfusher of the type adaptable for crushing rock .or stone and having a pair of relatively stationary jaws, with a pair of pivotally mounted center jaws swung simultaneously on their pivots by an eccentric shaft rotating therebetween.

In the accompanyin drawings I have illustrated one complete example of the physical embodiment of my invention according to the best mode I have thus far devised but it will be understood that various changes and alterations may be made in the exemplified structure within the scope of the appended claim.

In the drawings:

Figure 1 is a longitudinal vertical sectional view of the crusher of my invention.

Figure 2 is a partial horizontal sectional view showing the adjustment means for the stationary Jaws.

Figure 3 is a transverse vertical sectional view at line 3-3 of Figure 1.

Figure 4 is a transverse vertical sectional view at line 4-4 of Figure 1.

Figure 5 is a perspective View of the eccentric shaft.

Figure 6 is a transverse sectional view at line 6-4; of Figure 1.

Figure 7 is a perspective view of the adjustment toggle.

Figure 8 is a perspective view of the yoke for the stationary jaws.

Referring now to the drawings, I have illustrated the crusher of my invention embodying a frame 2 having vertical side walls 4 converging upwardly at 6 and having a depending flange 8. A center cover I0 is fashioned with downwardly diverging walls l2 forming the two spaced hoppers I4 and It.

The center crusher jaws l8 are pivotally secured in the frame upon the rods 20 and in the crushing faces of the jaws I employ wear plates 22 secured therein by retaining strips 23 and bolts 24. The lower edges of the retaining strips v 2 the inner faces of the jaws 18 by bolts 4'2 and the stay'bars 44 secure the walls of the frame-against displacement under pressure.

'The fixed jaws of the crusher are illustrated at 46 supported upon the rods '48 and these jaws are also fashioned with wear plates 58 secured by retaining strips 52 and bolts 54 and. the lower joint of the plates and the jaws are dovetailed as at 56.

The outer faces of the stationary jaws are formed with lugs 58 to receive and secure the rods 60 by means of the yoke 6| at one end while the other ends are resiliently affixed to the walls 6 by springs 62 and nuts 64.

Adjustment of the stationary plates with relation to the pivoted jaws is accomplished through the spring plates 66 in a groove 61 of the stationary jaws 46 and against the abutment 68 resting on the frame 2, the collars 18 attached to bolts 12 having squared ends 14 and disposed within the sleeves Hi the bolts and collars 10 being in threaded engagement. The sleeve 16 is provided at its inner end with the annular flange which is secured to the collar 70. The bolt 12 having the enlarged head 'Hil which provides a swivel connection between the abutment 68 and the bolt 16. The outer end of the sleeve 16 abutting the side walls 4 of the crusher.

Thus by rotating the squared ends of the bolts, the jaws may be moved outwardly or inwardly with relation to the jaws IE to predetermine the space therebetween in the crushing operation.

From the above description of the structure of my invention it will be apparent that the rotation of the main shaft and the eccentric from the wheel W will simultaneously swing the jaws 18 on their pivots to intermittently crush the rock or stone in the hoppers between the jaws l8 and the jaws 46.

Obviously the friction plates, and the wear plates may be replaced because of being worn or because of the desire to change the outer face of the jaws I8 under different crushing conditions.

The crusher of my invention is simple in construction and operation, and is durable under stress of operation, and I have found that lubricant necessary for the operation of such a machine may be sealed in the main shaft journals, the other parts requiring little or no attention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

In the adjusting means for the stationary jaw of a duplex crusher having a frame and a pair of stationary jaws supported by a said frame, and a 3 pair of centrally disposed pressure jaw elements pivotally supported by said frame and said jaw elements being adapted for movement toward and away from said stationary jaws, the improvement comprising resilient supports for each stationary jaw, each support comprising an abutment mounted for horizontal slidable movement on said frame, a spring plate bearing against the outer surface'of each stationary jaw and supported at its opposite end in said abutment, horizontally disposed adjusting means coacting with said abutment for the movement thereof, said means comprising a threaded collar slidably and nonrotatably fixed on said frame, a bolt threaded at one end and engaging in said collar and having a swivel connection with said abutment, a sleeve fixed at one end to said collar in horizontal relation thereto and abutting the crusher frame at its opposite end, and said bolt being rotatably mounted with clearance in said sleeve for the guiding of said bolt, the outer end of the bolt passing with clearance through the frame and being provided with a square shaped end for the reception of a similarly shaped tool for the movement of said bolt whereby said abutment may be adjusted with relation to said collar and said spring plate may resiliently support a jaw with relation to said abutment.

ROSCOE H. WATERS.

REFERENCES CITED The following references are of record in the file of this patent:

V UNITED STATES PATENTS Number Name Date 121,143 Peterwood Nov. 21, 1871 707,385 Calkins Aug. 19, 1902 1,997,214 Guest Apr. 9, 1935 2,009,186 Peterson July 23, 1935 2,028,643 Bakstad Jan. 21, 1936 2,235,097 Benson Mar. 18, 1941 FOREIGN PATENTS Number Country Date 19,953 Great Britain of 1906 52,437 Denmark Dec. 14, 1936 721,266 France Dec. 12, 1931 780,253 France Jan. 29, 1935 823,144 France Oct. 11, 1937 65,783 Germany Nov. 25, 1892