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.

Abstract: An extension and retraction system for a multiple section, telescoping boom apparatus of the type utilized for raising and lowering a work platform or basket. The innermost longitudinally movable section is carried by a longitudinally inextensible or base section, and is extensible and retractable relative to the base section by a dual cylinder assembly. Extension chains trained about sprockets carried by certain of the sections automatically extend the other extensible sections upon extension by the cylinder assembly of the innermost longitudinally movable section. Automatic and positive retraction of such sections is accomplished by retraction chains operating in response to retraction of the innermost section. The cylinders of the dual cylinder assembly are pivotally coupled at a pivot mount longitudinally slidable along a guideway carried by the base section to thereby accommodate deflections of the boom sections located between the opposite extremities of the dual cylinder assembly.

Abstract: A coil guide member as a part of apparatus for insertion of a coil of electric wire into a stator of an electric machine. The coil guide member includes a readily replaceable wire protector element which has extending thin projections or lips which guide a coil of wire into a slot of a stator and which protect the coil of wire during movement of the coil of wire into a slot. Preferably, the thin projections or lips are flexible. This flexibility permits a large degree of tolerance in lamination teeth alignment. The thin projections or lips also permit insertion of a large range of coil wire sizes.

Abstract: Apparatus for precision level winding of coils. The apparatus is particularly adapted for precision level winding of a continuous set of coils, in which each of the coils in the set may have a number of turns differently from each of the other coils in the set and may be of a length and pitch different from each of the other coils in the set.The apparatus includes means for automatically applying coils of wire to a coil holder member which has a plurality of aligned substantially coaxial levels.The apparatus includes control means by which each of the variables involved is readily adjustable.There is relative axial movement between a rotary wire-laying flyer and the coil holder member. The apparatus includes means for applying a desired number of turns of wire to each level in a manner such that the spacing between turns is substantially constant, and the number turns applied to each level adjusted readily and easily.

Abstract: Apparatus for aligning the axle of a vehicle such as a truck, bus, etc., comprises a carriage adapted to be rolled into position adjacent the axle, a beam mounted on the carriage to pivot about a horizontal axis orthogonal to the axle, and means for projecting a laser ray coaxial with the pivot axis of the beam and onto a target positioned forwardly of the axle at a predetermined location with respect to the frame of the vehicle. The underside of the axle is engaged by a pair of forks adjustably carried by the beam to position the beam parallel to the axle. A centering mechanism is provided to center the laser with respect to the axle by causing the beam pivot axis to move laterally into a central position between the wheels of the vehicle. Preferably, the laser also projects a ray rearwardly through a central bore in the beam pivot pin to facilitate alignment of the laser with the pivot axis of the beam.