| 摘要 |
1, 245, 232. Apparatus for testing flexible materials. BRITISH PETROLEUM CO. Ltd. Sept.30, 1968 [Oct. 10, 1967], No.46173/67. Heading G1S. Test pieces of materials such as waxes, plastics, cardboard and other flexible materials are prepared e.g. by moulding and cutting in the case of waxes, and each piece is subjected to a specific number of bending oscillations or until broken. A test piece 1 is held at one end in a clamp 2 and passes between rods 5 about which it is bent by arcuate oscillation of rods 6 mounted in an arm 11 moved to and fro by linkage 12, 13, and an electric motor 15. The arm 13 may be arranged to cut a light beam and operate a counter. |
