Canadian machinery and metalworking (July-December 1917) . t for the shell,a special steady head has been plate M is firmly bolted to the frontof the carriage as shown at N, and ahole is bored in the upper portion, centralwith the lathe spindle, to receive thebush 0, which in turn is lined with abronze bush shown at P. The springsQ, between the fixed plate M and theflange of the bush 0, permit of the steadyrest accommodating itself to any slightvariation in the shell diameter. The cut-ting point of the tool I is always in rela-tively the same position to the revolvinghead L, and it
Canadian machinery and metalworking (July-December 1917) . t for the shell,a special steady head has been plate M is firmly bolted to the frontof the carriage as shown at N, and ahole is bored in the upper portion, centralwith the lathe spindle, to receive thebush 0, which in turn is lined with abronze bush shown at P. The springsQ, between the fixed plate M and theflange of the bush 0, permit of the steadyrest accommodating itself to any slightvariation in the shell diameter. The cut-ting point of the tool I is always in rela-tively the same position to the revolvinghead L, and it is therefore obvious thatthe groove will be cut in a uniform loca-tion on each shell, irrespective of the lat-ters position when held in the tension spring R is used to withdrawthe tool from the work after cutting;one end being secured to the fixed studS, and the other to the pin T, secured tothe movable tool slide G. ® INTERIOR PROFILING TOOL By R. smoothing and sizing of the in-terior of the shell nose, following the ntji CUL !. LATHE FIXTURE FOR CRIMPING GROOVE. on the side of which is the upright hous-ing B that carries the operating shaftC. To the top end of this vertical shaft hot closing process, has brought into playmany unique tooling devices for the ma-chining of this particular portion. Ow- 36 CANADIAN MACHINERY Volume XVIII. ing to the small opening at the nose itis somewhat difficult to sufficiently sup-port the tool while the irregularities are able time is wasted and much inconveni-ence caused by these omissions. Onlycertain kinds of tools are usually to be
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
