Abstract: Regenerative compression-combustion-expansion cycle engines are utilized to generate hot, high pressure gases for heat transfer use. The gas generation equipment includes temperature modulation by water injection, recycle of spent gas, and injection of turbine-expanded gas into the main hot gas stream. Separate combustion chambers are also utilized for exploiting low-cost fuel and increasing gas temperature. Special heat transfer equipment including helical nozzle arrays are provided for paper drying, the nozzle arrays being arranged to indirectly heat materials, such as paper, being dried, to radiantly heat such material, and to directly heat such material by impinging hot gas directly thereon. Continuously cleaned rotary filters, as well as jet operated doctor blades may be used in association with the nozzles.

Abstract: A vehicle running gear with articulated, self-aligning, wheelsets having means providing elastic restraint of steering moments. This means ensures that the axles of the wheelsets, while free to yaw conjointly to assume a radial position in curves, are restrained from unstable steering motions when operating in a relatively straight line at high speeds.The wheelset bearings are each carried by a subtruck which is shaped to provide a steering arm, and these arms are movably coupled in a region intermediate the axles, to accommodate conjoint yawing motions of the axles with respect to each other and in the general plane of the axles.

Abstract: A machine, and method, for tumbling objects or parts, generally of plastic material, to remove thin flange-like projections left along mold mating lines and frequently referred to as "flash". An advancing belt-like conveyor has a portion disposed to define an object-supporting surface so upwardly sloped in the direction of conveyor advance, as to cause tumbling and consequent deflashing of a mass of objects supported on said surface. The conveyor is also movable between two positions in which the objects are, respectively, loaded upon and automatically discharged from the conveyor. In the illustrated apparatus these are upper and lower positions. Tumbling occurs in the upper position, and discharge takes place in the lower position, under the influence of the advancing movement of the conveyor. The system includes mechanism for effecting additional cleaning of the objects, while tumbling on the conveyor, by subjecting them to a blast of impact cleaning media.

Abstract: Portable hoist or winch apparatus comprises such mechanism having a frame carrying a drum for a cable or other flexible member, and load-carrying means which includes first and second pulley block assemblies. A hook-bearing first assembly, in normal use, depends from a loop of cable extending from the drum back into securement with the winch frame; a second assembly is disposed in the cable rigging intermediate the drum and the first assembly. The first pulley block assembly has at least two pulleys; the second pulley block assembly has at least one pulley. The cable extends serially from the drum to a pulley of the first assembly, thence to the pulley of the second, back to the second pulley of the first assembly, and thence to the frame.