ENSILE STBENGTH AND ELASTICITY. 99 attached by one end to the hook, and the other end, after being passed over a small roller at the base, is pulled gradu- ally until it breaks, the detent engaging in the teeth of the arc as the pointer moves, and detaining the latter in the position it has assumed… … FIGS. 47 and 48. Breaking strain tester. 3. Elasticity Tester. — A small instrument for this purpose is shown in Fig. 49. This is screwed on to a table, and the thread to be tested is wound round the horizontal roller, one end being held fast whilst the other is pulled until the thread breaks,…
Textile fabrics -- Testing · Yarn -- Testing
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