. Electric railway journal . cup, coupled with themechanical limitations of a round wire expander ring,made air leakage a necessary evil. A packing set recently placed on the market by theH. W. Johns-Manville Company and shown in the accom-panying illustration, consists of an asbestos packing cupand a slip-type expander ring. The construction of thecup makes it air-tight, proof against heat, pressure andcondensate. It does not become porous in service, andwhen used with the expander ring gives a flat bearingsurface four times that of a round ring and practicallyeliminates air leakage. Insulati
. Electric railway journal . cup, coupled with themechanical limitations of a round wire expander ring,made air leakage a necessary evil. A packing set recently placed on the market by theH. W. Johns-Manville Company and shown in the accom-panying illustration, consists of an asbestos packing cupand a slip-type expander ring. The construction of thecup makes it air-tight, proof against heat, pressure andcondensate. It does not become porous in service, andwhen used with the expander ring gives a flat bearingsurface four times that of a round ring and practicallyeliminates air leakage. Insulating Plier Handles in the Shop IN ORDER to make safe the work on live wire withpliers, manufacturers have placed on the market aline with insulated handles. Some shopmen prefer toinsulate their own tools, especially for work on veryhigh voltage. The accompanying illustration shows avery successful method of insulation which can be con-veniently applied by the man in the shop. The handle, first shellacked, is wound tightly with. ffea Rubber Hose -PLIERS WITH INSULATED HANDLES mica cut in strips. A coat of rubber cement, of thekind used for repairing auto tires, is applied and whilethe cement is soft a piece of red rubber hose with is slipped over the handle. The cement facilitatesthe putting on of the hose, and finally hardens and holdsit firmly in place. By using red rubber the insulated pliers can bequickly picked out of a drawer full of miscellaneoustools. The end of the rubber tube is finally vulcanizedto protect the handle. Contact Shoe With Renewable Wearing Plate
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
