Description
Class B66D : CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
Subclass 1/39: Rope, cable, or chain winding mechanisms; Capstans (portable or mobile lifting or hauling appliances B66D 3/00) Other constructional details Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of axially-movable drums or barrels (B66D 1/395 takes precedence)