. American engineer and railroad journal . he body of the table which is used for holding refer-ence drawings during working hours. Besides these a smallreference table is also used, as shown in Fig. 2. Xo drawing boards are used, the tops of the tables being in-clined about i in 6, the height at the front being 36^ in., whichrepresents average conditions. T squares are also dispensedwith, a straight edge 30 in. long and two large triangles beingused for laying down base lines; this system is somewhat fasterand is much less cumbersome than where a very long and heavyT square is used. Drawing P
. American engineer and railroad journal . he body of the table which is used for holding refer-ence drawings during working hours. Besides these a smallreference table is also used, as shown in Fig. 2. Xo drawing boards are used, the tops of the tables being in-clined about i in 6, the height at the front being 36^ in., whichrepresents average conditions. T squares are also dispensedwith, a straight edge 30 in. long and two large triangles beingused for laying down base lines; this system is somewhat fasterand is much less cumbersome than where a very long and heavyT square is used. Drawing Paper for Elevations.—Elevation drawings of locomo-tives, cars and other large equipment are made to a scale of V/zin. to the foot, on cloth-backed elevation sheets which are manu-factured to specifications and are rigidly inspected before accept-ance. These sheets are purchased in two sizes, 26 x 75 in., whichis used for the largest elevations, such as 4-6-2 type locomotives,and 26 x 66 in., which is used for ordinary elevations. One of. FIG. I.—DRAWING TABLE FOR A LEADING DRAFTSMAN AND TWO DETAIL MEN. best be handled by the drawing office, is the most important issuein the motive power department. To be in a position to handle this work intelligently, a verynecessary part of the drawing office equipment is a complete setof records of all rolling stock and other equipment, which, bymeans of some practical system of indexing and filing, must bereadily accessible. These records must be kept up to date withthe improvements and additions which are constantly being this, it is necessary that a large amount of information,in convenient form, be placed at the disposal of motive powerofficials at distant points, which will keep them thoroughly postedas to repair parts, standards which have been adopted, regula-tions governing the performance of certain duties, such as test-ing boilers, etc., and a number of other subjects. The systemat present in use in the motive powe
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
