. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . lathe and connected to the controllerproper by means of a spline shaft andgearing. On different types of machinetools it is located in the most convenientpositions. PRESENT PRACTICE. When variable speed control was firstapplied to machine shop constructionthere was a tendency to carry it to excessand every tool, even the smallest, had itsindividual motor. As a general rule atthe present, it is not considered advisableto equip all machine tools with individualmotor drives, only the larger and
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . lathe and connected to the controllerproper by means of a spline shaft andgearing. On different types of machinetools it is located in the most convenientpositions. PRESENT PRACTICE. When variable speed control was firstapplied to machine shop constructionthere was a tendency to carry it to excessand every tool, even the smallest, had itsindividual motor. As a general rule atthe present, it is not considered advisableto equip all machine tools with individualmotor drives, only the larger and moreimportant machines are so equipped, theothers being driven in small groups byconstant speed motors. 536 RAILWAY AND LOCOMOTIVE ENGINEERING December, 1908. Patent Office Department SUPERHEATER. A superheater has heen patented byU. B. Oatley, Schenectady, N. Y., ,440. As shown in the accompanyingillustration, the device comprises a com-bination with a steam boiler of a verticalheader or casing, supported in the smoke-box adjacent to the front end and sideof the smokebox and comprising sep-. FRONT END SUPERHEATER. arate saturated and superheated steamcompartments. There are a number ofloops or bends of superheater pipes con-nected to the superheated steam com-partments. There is also a steam supplyconnection opening into the saturatedsteam compartment, and a delivery con-nection leading out of the understand the patent has been as-signed to the American LocomotiveCompany. SPARK ARRESTER. Alfred Hall, Edmonton, Alberta, Can-ada, has patented a spark arrester, ,807. The device comprises an invert-ed hollow cone having openings there-through and semicircular projections on
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
