The technical testing of yarns and textile fabrics (1920)
Herzfeld, J. (Jacob), b. 1859, Nisbet, David Thomas · London : Scott, Greenwood · leaf 146
TESTING THE STRENGTH AND ELASTICITY OF A FABRIC. 135 ment of the pointer is recorded by a supplementary hand. In setting up the machine care must be taken to have it vertical and fixed on a firm foundation. The method of applying the test is as follows : When the sample strip of cloth has been… … FIG. 73. — Tarnagrocki's cloth tester. wedges of the stretcher ra a slight pull on them is sufficient to fix it securely in place. Tension is then applied by turn- ing the hand wheel, and the pendulum P leaves its vertical situation to take up an inclined position until breaking is effected, its…
Textile fabrics -- Testing
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