he same function as of disks to close the wrench. When the chain is passed part, which in the illustration is a set-screw securing a the flat plate-spring previously mentioned. around a pipe and the hook engages the corresponding Besides taking up the shock caused by obstructions pair of disks,… … called in Russia ‘‘lejka,” signifying lying down or state A CHAIN-WRENCH FOR PIPES AND SHAFTS. A GUARD of repose. It is in fact a kind of hibernation, as will The toothed disks are firmly forced into engagement. be seen from the description which has been given. with the outer pipe-surface, so that…
Internet Archive · Public domain (published before 1931). Free to use for anything.
