Railway and Locomotive Engineering . being re-ceived in many of the principal railroadshops induces us to call attention to theleading characteristics of the machines,so that those who may not have an op-portunity of witnessing the degree of per-fection at which they have arrived inaccomplishing the work tor which theyare designed may form sqmc idea as totheir superiority. The head, which is themain feature of the machine, locks withinil.;elf and produces the effect oi a soliddie, thereby relieving the yoke of all cut-ting strain. It is opened and closed auto-matically by the forward and backw
Railway and Locomotive Engineering . being re-ceived in many of the principal railroadshops induces us to call attention to theleading characteristics of the machines,so that those who may not have an op-portunity of witnessing the degree of per-fection at which they have arrived inaccomplishing the work tor which theyare designed may form sqmc idea as totheir superiority. The head, which is themain feature of the machine, locks withinil.;elf and produces the effect oi a soliddie, thereby relieving the yoke of all cut-ting strain. It is opened and closed auto-matically by the forward and backwardmovements of the carriage. This mechan-ism is controlled by means of a trip rodby which an adjustment for any desiredlength of thread may be obtained. Thevises have a horizontal side-wise as wellas a vertical centering adjustment. Thisinsures perfect and permanent alignmentwith the die. The frame is of a boxstructure, and is cast in one piece. Thecone pulley is mounted on top of the ma- clamp engages thtail U the back dove-small. chine, and economizes floor space andbelting. The gears are enclosed to com-ply with the factory inspection law, andinsures safety for the operator. The lu-brication system includes a rotary pump,a by-pass for the surplus cutting solution,and a special control valve at the internal drain located in the mainspindle, provides a direct passage to thestorage tank for any lubricant which mayenter the bore. The most original and mo>t distinguish-ing feature in these machines, however,is in the form and position of the chaserin its holder. It will be noted in the il-lustrations that the chaser is supportedclose to the cutting edge and is clampedso as to prevent any canting or bell-shaped effect in the die. The chaser isbacked at the rear and advanced in itsholder by means of an abutting correct cutting position is obtained asshown in Fig. 1, and is determined bymaking the zero line on the gauge coin-cide with the zero line un the holde
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyork, bookyear19
