. American engineer and railroad journal . RELIEF QUICK TRAVERSE GEAR. bed. Additional support is given to the frame when the ramis extended by the standard back of the column mounted onan extension of the bed, which has a sliding contact with thehead when the latter is extended. The head and compound table may be moved quickly in alldirections by power by means of the quick traverse gear eccentric to the crank shaft, and is connected to it by a crankand a steel link instead of the usual sliding block, thus elim-inating considerable friction in addition to obtaining a moreuniform cutti
. American engineer and railroad journal . RELIEF QUICK TRAVERSE GEAR. bed. Additional support is given to the frame when the ramis extended by the standard back of the column mounted onan extension of the bed, which has a sliding contact with thehead when the latter is extended. The head and compound table may be moved quickly in alldirections by power by means of the quick traverse gear eccentric to the crank shaft, and is connected to it by a crankand a steel link instead of the usual sliding block, thus elim-inating considerable friction in addition to obtaining a moreuniform cutting speed. The quick part of the movement takesplace at the lower end of the stroke, a point where there isbut slight movement of the ram, and where there is alwaysan excessive dwell; considerable time is thus saved, and as ittakes place when the reciprocating parts are nearly at rest, itis possible to obtain a higher cutting speed than would other-wise be possible. The feeds are operated without the use of cams, and thefeed is quick and positive with a
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
