Abstract: Apparatus is provided for crushing rock into aggregate which utilizes a movable jaw operating relative to a fixed jaw. The movable jaw is supported on upper and lower toggle plates which are positioned in non parallel planes. Rock to be crushed is received in an upper entry region defined by the jaws and by opposed cheek plates cooperable with the jaws. Upon reciprocating movement of an hydraulic actuator, a major movement imparted to the movable jaw at its upper region is in a generally upright plane and a major movement imparted to the movable jaw at its lower region is in a generally horizontal plane transverse of the upright plane. In this manner, improved initial cracking of the rock as it enters the upper entry region is achieved and increased production flow of crushed aggregate is achieved at a discharge region by reason, at that location, of the relative horizontal movement between the fixed and movable jaws.

Abstract: A thread monitor device for a textile machine to monitor thread feed through a region of a machine, the device including a source of light, means to convey the light to a thread feed region, and to direct light into said region, means to receive light directed into said region from said source and produce a monitor signal representative of said received light, means responsive to said monitor signal and to changes therein to indicate the occurrence of a change in said signal representative of a change in thread feed in the region.