Library Digital Collections

Ball casting mold; The mold is so designed that a taut cable can be hooked, clamped and bulled aboard. The ball is cast by introducing a low melting point alloy with a rubber-syringe held in the hand. Such balls are capable of holding about 500 pounds tangentially to the cable ...

Ball casting mold; The mold is so designed that a taut cable can be hooked, clamped and bulled aboard. The ball is cast by...