A cellular building structure comprised of a multiplicity of cells, each cell in the structure being a substantially fully enclosed unit and having a regular geometric cross-sectional configuration. The cells are situated around and in close proximity to one another with the sides of any one of the cells being at an angle supplementary to a side of another one of the cells, where the supplementary sides are adjacent and parallel to one another to form a compartmentalized cell structure, or where...

An electronic programmer includes means for writing and reading a control signal from a recording medium, and means for switching the programmer from the writing to the reading mode of operations and vice versa. For the readout mode of operation the programmer is provided with means for detecting bursts of a.c. signals from the recording medium and means responsive to the a.c. signals for generating a pulse train having a number of pulses corresponding to the number of the a.c. signal bursts, a ...

A pressure switch assembly in which the switch is actuated by a pressure responsive diaphragm which is held in assembled relation with the diaphragm bowl by a resilient seal ring and by a cap which is fastened to the switch base, the peripheries of the diaphragm and its bowl being sealingly engaged under the clamping force which deforms the seal ring, without a bond between or at the peripheries of the diaphragm and its bowl. Such a pressure switch assembly in which the resilient seal ring backs...

A stepper motor having a pair of field coils, a pair of permanent magnet rotors carried by a single shaft such that their magnetic polarities are displaced ninety mechanical degrees from each other, and two pairs of stator pole pieces. Each pair of stator pole pieces is associated with a separate rotor and a separate field coil. A stationary permanent magnet is mounted on each pair of stator pole pieces, and the magnet generates a bias flux in opposition to the flux of the field coil associated ...

There is disclosed a means to convert a conventional two wheel drive tractor to four wheel drive utilizing the original tractor power unit, the transmission-differential and the frame comprising two walking beam frame assemblies connected to the original rear drive axle, each housing a sprocket for a front wheel, a sprocket for a rear wheel, a means to drive these wheels, and a chain to take the power from the drive means and transfer it to the wheel sprockets. The drive sprocket is connected to...

A palletized pre-cut modular small building that requires no wood cutting to assemble is constructed from four foot wide modules of plywood sheets no larger than 4.times.8 feet and 2.times.4's for the joists, studs, floor plates, headers and rafters. The design of the modules is such that they can be stacked to give a sturdy 4.times.8 foot pallet. The modules include besides floor and wall modules, door and window modules. Small components including pre-cut rafters, truss points and trim are shi...

An auxiliary equipment attachment adapter, to be used in pairs, semipermanently attaches to the customary mounting fixtures on a vehicle for commonly available equipment including snow plows. The adapter has open horizontally diverging jaws, upwardly inclined to direct the attachment plate of the equipment to be attached into a retaining slot of the adapter. The equipment is modified by having a retaining bar placed between its attachments plates to engage a latch that holds the attachments plat...

An apparatus and method are disclosed for the circulation of an atmosphere within an enclosed chamber such as a smokehouse. The apparatus comprises a fan and a movable deflector located in the path of atmosphere stream from the fan. The deflector has adjustable louvres which may be locked in the desired position for angularly deflecting the atmosphere from the fan, and the deflector is connected to a power source such that the deflector may be continually moved to deflect and direct the atmosphe...

In toroidal core winding apparatus, wherein the wire to be wound is stored as a helix within a hollow hoop and the hoop as it rotates through the core dispenses the wire from a point on the edge of its inner periphery; the hoop consists of a flexible hollow steel or plastic tube that can be maintained in the shape of a distorted circle; e.g., an elongated oval or racetrack shape, by guide wheels so that the hoop, for at least an appreciable portion of length on its periphery, moves in a straight...

A universal drive employing at least one constant velocity universal joint of the three-roller type employing a trunnion member and a track member. The trunnion member carries three drive rollers rotatably secured for universal tilting on respective trunnions which are rigidly secured in equiangularly spaced relation with their axes defining a plane perpendicular to the axis of rotation of the trunnion member. Each of the rollers has a generally cylindrical outer peripheral surface disposed in c...