. Railway mechanical engineer . this be the case, grinding will generally be the more economi-cal when considering the life of the cylinders. The article to be ground is secured to the table, whichmay be adjusted so that the work will be brought in linewith the grinding wheel spindle. The illustrations show aNo. 60 internal grinding machine manufactured by the Trueing Ip tlij Bu^liin;; Fit in a Side Rod various air brake parts, including triple valves. The valvechambers in the top heads of air compressors when worn,may also be refinished on it. Steam and air cylinders maybe refinished when wor
. Railway mechanical engineer . this be the case, grinding will generally be the more economi-cal when considering the life of the cylinders. The article to be ground is secured to the table, whichmay be adjusted so that the work will be brought in linewith the grinding wheel spindle. The illustrations show aNo. 60 internal grinding machine manufactured by the Trueing Ip tlij Bu^liin;; Fit in a Side Rod various air brake parts, including triple valves. The valvechambers in the top heads of air compressors when worn,may also be refinished on it. Steam and air cylinders maybe refinished when worn or cut. To refinish a very badlyworn cylinder may reciuire more time than on a boringmachine, on account of the large amount of metal to beremoved in order to true up the entire surface, but even if. Heald No. 60 Cylinder Grinder Heald Machine Company, Worcester, Mass. This companyexpects to exhibit a machine of this type at the Junemechanical conventions at Atlantic City. Notable features of the machine are a large crosswise ad-justment of the work, large vertical adjustment of the knee,multiple speeds for the rotation of the head, quick changegear for speeds and feeds, and micrometer readingsthroughout. The i)roportions of this grinder, which occupies 38 in. by90 in. of floor space and is driven In a 3-hp., 1,200 , are well conveyed by the general photograph; anotherphotograph illustrates the grinder performing a characteristicrailroad shop operation in the grinding of an elongatedbushing fitted in a locomotive side rod. The main table is 13in. wide by 52 in. long, with a finished top 10 in. wide by24 in. long, and has two T-slots and alining grooves. Thecross slide table is 18 in. wide by 36 in. long, provided witha finished top 14 in. wide by 28 in. long, with
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
