Abstract: A modular overload relay provides a low cost analog base unit performing overload detection functions and one or more add-on units communicating with the base unit through an electric conductor on a side of the base unit to which the add-on module may be attached. The add-on units augment the circuitry of the base unit through additional analog or microprocessor-based circuitry communicating with various points within the analog circuitry of the base unit.

Abstract: A modular overload relay provides a low cost analog base unit performing overload detection functions and one or more add-on units communicating with the base unit through an electric conductor on a side of the base unit to which the add-on module may be attached. The add-on units augment the circuitry of the base unit through additional analog or microprocessor-based circuitry communicating with various points within the analog circuitry of the base unit.

Abstract: An overrunning clutch cage molded of a plastic material with a greater differential of expansion is provided with a circumferentially spaced plurality of cage sections connected by alternating connector members that are sufficiently axially spaced and sufficiently flexible to allow the cage sections to move freely relative to one another, and thus conform to an annular space between clutch races with changing temperature without binding.

Abstract: A cage assembly for an overrunning clutch is formed with a cage body of molded plastic that is initially unitary, and which can therefore be easily handled. The joinder of metal end rings to the cage body serves to fracture it into a plurality of separate pieces, which are maintained in substantially their original positions by their joinder to the end rings. The completed cage assembly can also, therefore, be handled with the ease of a unitary structure. After installation, the fracture of the cage body allows its separate pieces, which include support portions, to maintain the races of a clutch coaxial to one another, but to operate independently, substantially like a conventional, separate piece cage assembly.

Abstract: A gas bearing roll shell assembly comprises an outer rotatable roll shell carried on an externally pressurized gas bearing between the roll shell and a stationary axle. The roll shell has end rings, one of which has turbine buckets recessed into its bore. The axle carries a valve body having part-chordal passages aligned with the turbine buckets and a rotatable valve for selectively driving the roll shell in one direction or the other. In a modified form, selection is limited to driving in a single direction by a pin and slot arrangement. The assembly is especially useful as an overrun roller in textile machinery involving the high speed transport of threads, yarns or the like.

Abstract: A roll shell assembly such as is used in textile equipment has a roll shell rotatably supported on a gas bearing of the externally pressurized type. The assembly incorporates a pressure chamber at one end of the roll shell which preloads the roll shell against a gas thrust bearing at the other end of the roll shell to eliminate end play when external thrust loads are applied.