Abstract: A metal body has a threaded inlet port and a threaded outlet port which extend to corresponding inlet and outlet chambers within the body, and a semi-spherical liner seats within the body and has ports communicating with the inlet and outlet chambers. A dome-shaped lens is sealed to the body and cooperates with the liner to define a fluid circulating chamber enclosing a fluid sensing ball having crossing holes therein. A mounting plate has a first opening receiving the body and a second opening receiving a power operated optical sensor having fiber optic cables positioned to sense through the lens movement of the ball within the fluid circulating chamber. The ball is sensitive to a very low flow rate and provides a visual indicator of the flow, and the optical sensor provides an electrical signal for operating an alarm or apparatus such as a machine which requires the fluid flow.

Abstract: Hoist assist mechanism which assists in the manual movement of a coil insertion tool assembly to and from an operational position. The hoist assist mechanism has a rotatable base, to which is attached an upwardly extending post. At the upper portion of the post is a sheave, Also, attached to the base, adjacent the post, is a support arm which supports a coil insertion tool assembly. The support arm is pivotally attached to the rotatable base. A cable is attached to the arm. The cable extends over the sheave and is also attached to a spring which assists in pivotal movement of the arm. The spring is adjacent the post or enclosed by the post. Preferably, plurality of posts and arms are pivotally attached to the base. Each pivotal arm supports a coil insertion tool assembly. Thus, coil insertion tool assemblies for different stator cores can be easily and readily moved into and out of operational position as desired.

Abstract: Hoist assist mechanism which assists in the manual movement of a coil insertion tool assembly to and from an operational position. The hoist assist mechanism has a rotatable base, to which is attached an upwardly extending post. At the upper portion of the post is a sheave. Also, attached to the base, adjacent the post, is a support arm which supports a coil insertion tool assembly. The support arm is pivotally attached to the rotatable base. A cable is attached to the arm. The cable extends over the sheave and is also attached to a spring which assists in pivotal movement of the arm. The spring is adjacent the post or enclosed by the post. Preferably, plurality of posts and arms are pivotally attached to the base. Each pivotal arm supports a coil insertion tool assembly. Thus, coil insertion tool assemblies for different stator cores can be easily and readily moved into and out of operational position as desired.

Abstract: Apparatus for automatically inserting coils and wedges of proper dimensions into a stator core which may be any one of various lengths. The apparatus includes support structure which supports a stator core of a given length. The support structure also supports mechanism for insertion of prewound coils into the stator core. The support structure also supports a coil carrying tool which carries coils for insertion into the stator core. The support structure has relatively movable parts which move in proper relationship to each other and to the stator core for transferring prewound coils from the coil carrying tool to the slots of the stator core. The support structure also supports a wedge magazine which retains wedges of a proper length for the stator core of a given length. The support structure also supports a wedge guide unit and a wedge pusher unit which automatically operate to insert wedges of the proper length into the stator core.