. Railway mechanical engineer . epressure in the tank before the dome cover is removed, anapproved method for the modification of existing dome coversconsists in drilling horizontally through the bottom flange sixyi-in. holes, at root of the screwed portion, as close as possible under the top flange. Where the length of thescrewed portion is not over IJ4 in., it is recommended thatnot less than nine 5/16-in. holes be drilled, instead of thesix J^-in. Any other arrangement which will insure the relief of in-ternal pressure before the removal of the dome cover will beacceptable if first submitte
. Railway mechanical engineer . epressure in the tank before the dome cover is removed, anapproved method for the modification of existing dome coversconsists in drilling horizontally through the bottom flange sixyi-in. holes, at root of the screwed portion, as close as possible under the top flange. Where the length of thescrewed portion is not over IJ4 in., it is recommended thatnot less than nine 5/16-in. holes be drilled, instead of thesix J^-in. Any other arrangement which will insure the relief of in-ternal pressure before the removal of the dome cover will beacceptable if first submitted to and approved by the MasterCar Builders Association. TURNING CAR JOURNALS An interesting arrangement of a lathe for turning carjournals in use at the Clinton shops of the Chicago & NorthWestern, is shown in the accompanying illustration. Thelathe is located in a pit sufficiently deep to bring the ways atthe approximate level of the floor. The car wheels are rolledin through the door shown in the background, and onto the. Arrangement of a Lathe for Turning Car Journals lathe over iron bars extending between the ways and thefloor. The wheels are raised to the proper position for thecenters by the hand-jack located between the ways. By thismethod it is an easy matter for one man to handle the entirework, as the machine may be loaded with but very littleeffort. LETTER BOARD SPLICE The illustration shows a horizontal section through a coachletter-board splice which is in use on the Canadian other types of joints and splices which have been triedconsiderable trouble has been experienced from the openingup of the joint at the surface and the warping of the boards
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
