. Railway mechanical engineer . hese bins are 3 ft. high and between them is a space tributed between the draft gear and end sill. The point of con-tact between the horn of the coupler and striking plate is assumedto be 2 in. above the top of the coupler shank. For a shank 5in. deep, the distance from the center line of draft gear to theassumed point of contact of coupler horn is 4J^ in. This is thefirst time, to my knowledge, that any mechanical body has everconceded that the center line of end force is above the center lineof the coupler. This is as it should be, as there is no draftgear of
. Railway mechanical engineer . hese bins are 3 ft. high and between them is a space tributed between the draft gear and end sill. The point of con-tact between the horn of the coupler and striking plate is assumedto be 2 in. above the top of the coupler shank. For a shank 5in. deep, the distance from the center line of draft gear to theassumed point of contact of coupler horn is 4J^ in. This is thefirst time, to my knowledge, that any mechanical body has everconceded that the center line of end force is above the center lineof the coupler. This is as it should be, as there is no draftgear of sufficient capacity to entirely absorb this end force. I donot think that the assumed 250,000 lb. is sufficient. The assumedend force should be not less than 400,000 lb. static, basing myopinion on what I see in the field, and the tests made by Prof. Chain S) \Chain\ L j^—I-- Chain | tfep/acers I q ^ Space tor Wrecking Crane Boom Doors to be covered with 1No 6 Roof Canvas andpatnt ■ed, Shiplappedjoints indoatat points shown. Wrecking Crane End 373$ Canadian Northern Wrecking Crane Auxiliary Car 3 ft. 6 in. wide within which hang the crane hooks when thewrecking train is made up. The train consists of the crane, theauxiliary car, a tool car, a flat car for trucks, blocking, etc., anda boarding car for the crew, in the order named from the loco-tive. The auxiliary car was developed by A. L. Graburn, assist-ant superintendent rolling stock of the Canadian Northern. THE CAUSE OF SHOCKS IN LONG FREIGHTTRAINS* The Master Car Builders Association Committee on car con-struction has stated that the intensity of end force on freightcars is assumed to be equivalent to 250,000 lb. static, which maybe concentrated on the center line of the draft gear, or dis- * From a paper by H. C. Priebe, Chicago Steel Car Company, read beforethe Car Foremens Association of Chicago, December 13, 1915. Ensley during the past year. The statement was made by D. , general superintendent motive p
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
