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Investigation of Lubricants Under Boundary Friction
Numerous observations of such lubrication processes within range of boundary friction on journal bearings and gear tooth profiles have strengthened the supposition that it should be possible to study the attendant phenomena with engineering methods and equipment. These considerations formed the basis of the present studies, which have led to the discovery of relations governing the suitability of bearing surfaces and the concept of "lubricating quality.".
Date:
May 1942
Creator:
Heidebroek, E. & Pietsch, E.
System:
The UNT Digital Library
Recording Rapidly Changing Cylinder-Wall Temperatures
"The present report deals with the design and testing of a measuring plug suggested by H. Pfriem for recording quasi-stationary cylinder wall temperatures. The new device is a resistance thermometer, the temperature-susceptible part of which consists of a gold coating applied by evaporation under high vacuum and electrolytically strengthened. After overcoming initial difficulties, calibration of plugs up to and beyond 400 degrees C was possible" (p. 1).
Date:
May 1942
Creator:
Meier, Adolf
System:
The UNT Digital Library