The synchronous motor, applicable to battery powered clocks is so designed that the north and south poles, formed on the peripheries of a pair of rotor discs, are bent so as to extend parallel to the arbor and to be staggered on the peripheral surface of the rotor. The gap distance between the north and south poles is larger than that between the poles and the corresponding pole faces of a stator which has a magnetic flux induced therein by an AC energizing circuit, whereby the efficiency of the...

Apparatus is described for blending small particles and uniformly loading the blended particles in a receptacle. Measured volumes of various particles are simultaneously fed into a funnel to accomplish radial blending and then directed onto the apex of a conical splitter which collects the blended particles in a multiplicity of equal subvolumes. Thereafter the apparatus sequentially discharges the subvolumes for loading in a receptacle. A system for blending nuclear fuel particles and loading th...

A procedure for drawing ultrafine wires is disclosed which incorporates the steps of inserting a core wire of a selected material into a plurality of telescoped sacrificial sheaths, welding the ends of the core wire to the sheath and successively drawing the combination down to a predetermined diameter. The outside sheath is sacrificed by etching to free the proportionately reduced core wire. The core wire may be initially covered with Teflon to aid in the reduction and the Teflon is removed by ...

A small A.C. electric motor a stator core is provided in the form of a block made of sintered soft magnetic material, the stator core having a disk-shaped or ring-shaped yoke used as a common magnetic path and a plurality of tooth-like poles extending from the yoke in the axial direction of the stator core. Groups of windings are placed on the tooth-like poles, and a rotor is confronted by the tooth-like poles. In such an electric motor, the windings can be readily installed on the stator core. ...

This automatic small arm mechanism provides the locking of the firing members by means of an independent member adapted to engage the intermediate lock member controlled automatically by the inertia block or manually. Thus, the main lock bolt will lock the intermediate lock member when the breech block is in its closed position, whereby the striker return spring may be as strong as desired and necessary since the return movement of the independent percussion member has no incidence whatsoever on...

A heater unit and draft control adapted to be connected to an existing solid, liquid or gas fueled heating furnace includes a heat exchanger having a stack gas passage connected in series to a stack from the furnace and a blower which forces air through the heat exchanger and into the plenum of the furnace. A stack cooler and/or draft control includes a pipe extending from outside of the house into the exit portion of the stack gas passage with an adjustable damper therein.

A small-motion test device especially useful as a welding aptitude test and primary training device comprises a target movable along a linear track, and switch means for defining a multi-dimensional envelope of freedom of movement of said target. A wand held by the test subject must affirmatively position the target within the envelope, and maintain it there throughout the time of the test while the target moves along the track at a preprogrammed rate. Success of the test is indicated and accoun...

A trailer that is closely coupled to the rear of a passenger vehicle and includes a steering mechanism for automatically positioning the trailer wheels in a locked, straight-ahead position when the vehicle is traveling forwardly and in a steerable mode when the vehicle is moving rearwardly.

An electric motor having a rotor member and a stator member which define an air gap from about 0.001 inch to about 0.006 inch in width, the ratio of air gap width to rotor diameter being from about 0.0009 to about 0.005.

A projectile fired from a gun barrel, aimed in straight flight upon a small arget, has a massive armor-piercing body spacedly surrounded by a sleeve which defines with its outer surface a ring channel that may also serve as a combustion chamber for generating additional thrust. The sleeve, whose cylindrical outer periphery provides guidance in the gun barrel, is axially divided into a rear portion rigid with the massive body and a relatively slidable front portion. In an initial forward position...