| 摘要 |
<p>1,222,671. Chain-wrench. S. E. COBLITZ. 29 May, 1968 [17 July, 1967], No. 25696/68. Heading B3N. A chain-wrench comprises pivoting handles 10, 11, the former having a pin 24 around which a chain secured to handle 11 is wrapped, and the space 30 between the pin and the arm 11 through which the chain passes is varied by a cam surface 22, 28, on arm 11, when the arms are pivoted relative to each other.</p> |
