A device for the continuous, being free pruefung of the strain gauge - voltage behavior as well as of the coefficient of expansion fadenfoermigen material and such apparatus test methods

摘要

1,267,437. Testing filamentary material. C. A. LITZLER. Oct.27, 1969, No.52421/69. Addition to 1,184,586. Heading G1S. The apparatus of the parent Specification is modified in that electrical control means, Figs.4, 5, are provided for selectively driving the hold back capstan 23, Fig.3, and a take-up capstan 24 with a positive uniform speed differential to provide a constant elongation of the filament passing through the loop or in response to a tension measuring load cell or strain gauge 33, Fig. 2, to provide a constant tension in the material passing through the loop.