Piston 54 carries a sealing element 60 fixed thereto by means of cap screws 62. The abutment element 50 is provided with a circular channel, shown in dotted lines .in Figure 6 and designated by the reference numeral 64, closed on its lower end by a sealing member 66 (Figure 4) and forming'a conduit'connecting all of the bores 56 together.Stone Crusher Manufacturer In India. A conduit 68 is threaded in the side of .the element 50 and isconnected in communication with av channel 64. A source of fluid under pressure (not shown) is connectable to the conduit 68 for raising the abutment member 48 relative to the element 56 and to thereby secure and lock the concave supporting element 28 to the ring 30 as a result of the securing pressure against the nut 44 and the adjacent portion of the shelf 38.

Depend from the ring-shaped abutment element 48 and serve as guides for the movement of the element 48 relative to the element 50. The upper end of each cylinair cylinders, the releasable pressure applying means is actuable to direct securing pressure against the nut 44 and the adjacent portion of the shelf 38 for locking the:Spain Mobile Sand Plant,concave supporting element 28 to the supporting ring 3i) and being actuable upon release to relieve such securing pressure against the nut and shelf and...permit movement of the concave supporting element 28 relative to the ring 36 for adjustment of the mantle 26 toward and away from the cone 24.

In operation, assuming that the'concave supporting element 28 has been rotated in the threaded supporting ring 30 to the set position and the nuts 44 turned down tightly against the upper abutment elements 43 or 98 of the pressure applying mechanisms 46 or 92, and play appears between the nuts 44 and the upper abutment ele ments 48 or 98, due to any wear between the nuts 44 and studs 40, the nuts 44 are turned down tightly against the upper abutment elements48 or 98, whereupon air is spacedrelation and all connected together by a single conduit 76 which leads to a valve assembly 78 for controlling the admission of hydraulic fluid into each of the In Figure 2 the reference numeral 85* indicates the driving pulley for the cone or In Figure 7 is shown a nut 44' which is adaptable for use with each mechanism 46, such nut 44' being provided (with broken threads 84.