. Electric railway journal . Testing Laboratory Nuttall Tests are your Brinell Machine for Test-ing Structural Hardness Guarantee A well-equipped chemical labora-tory is maintained to determine thechemical analysis of all steel beingheat treated for Nuttall Gears. After heat treatment the gears andpinions are tested with a BrinellMachine to determine the struc-tural hardness; while a Sclerescopeis used to find the surface Sclerescope for TestingSurface Hardness BP Gears are solid only, of forged steel of medium carboncontent, heat treated and giving a material having excep-tionally
. Electric railway journal . Testing Laboratory Nuttall Tests are your Brinell Machine for Test-ing Structural Hardness Guarantee A well-equipped chemical labora-tory is maintained to determine thechemical analysis of all steel beingheat treated for Nuttall Gears. After heat treatment the gears andpinions are tested with a BrinellMachine to determine the struc-tural hardness; while a Sclerescopeis used to find the surface Sclerescope for TestingSurface Hardness BP Gears are solid only, of forged steel of medium carboncontent, heat treated and giving a material having excep-tionally good refinement of structure, great strength andtoughness, which owing to the close, dense grain of themetal after treatment greatly increases its resistance towear. The great strength of this gear makes it applicableto severe service conditions. Structure of B PGear Teeth Nuttall - - - Pittsburgh The gears and pinions arecut true to pitch, and nextare put through a specialheat-treating processwhich gives them excep-tional tensile process insures thegear and pinion a wear-ability of three to fivetimes that of the or-dinary gear and are reasonable,and when durability isconsidered—very low in-deed. Catskill Heat-Treated Gears and Pinions Star Brand A new type, of gear andpinion especially pre-pared and heat-treatedby a process of our finest quality ofrolled steel blanks areused for materia
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
