. American engineer and railroad journal . 31360394336487552637I53920 . TSi .041 4M .207177 976 1087 4 3K. 3« 3449 .094 2711 .150 1533 m 2982 m 1 3 2Si 9^4 1 -m xm U 1 2H 2 \y^ iH The ratio between R and d should be about 2 to 1, that is,a spring made of 1-inch diameter bar should be 5 inches outsidediameter. If less than this the diameter of the bar becomestoo great for the diameter of coil. This will be noticed alsoin calculating the deflection. The working height under theload is assumed to be midway between the free and solidheig
. American engineer and railroad journal . 31360394336487552637I53920 . TSi .041 4M .207177 976 1087 4 3K. 3« 3449 .094 2711 .150 1533 m 2982 m 1 3 2Si 9^4 1 -m xm U 1 2H 2 \y^ iH The ratio between R and d should be about 2 to 1, that is,a spring made of 1-inch diameter bar should be 5 inches outsidediameter. If less than this the diameter of the bar becomestoo great for the diameter of coil. This will be noticed alsoin calculating the deflection. The working height under theload is assumed to be midway between the free and solidheights, the working load being considered as half the loadrequired to bring the spring solid. The deflection under theworking load should be about one-eighth, or when solid one- deflection is given for one coil under the working load, and toobtain the deflection for any height multiply the deflection inthe table by the number of coils. NARROW-GAUGE LOCOMOTIVE FOR THE CAUCA RAIL-WAY. The locomotive illustrated by the engravings herewith, has. Narrow Cage Locomotive, Cauca Railway, United States of by the Baldwin Locomotive Works, from Desii/ns by M. N. Forney, M. E. quarter of the free height. A spring made of 1-inch bar, 5inches outside diameter, 6 inches solid, would be 8 inches high when free and contain = -j- = 6 coils, length of bar M 2 jr R = laches, tapered length of bar ^ + L inches. De- flection under working load= (from table) = .972. FromTable 3 (which is adapted from one prepared by Mr. J. ) a spring of suitable strength, size of bar, outsidediameter and deflection may be selected. The working load isof course independent of the height, it remaining constantwhether the spring is one or any number of coils high. The recently been completed at the Baldwin Locomotive Works forthe Cauca Railway, in the United States of Colombia, SouthAmerica, and has some novel and interesting features. Theplan of the engine was proposed by Mr. M. N
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
