. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ubber Co 11 Rogers Locomotive Works 34 Ross Valve Co 4th Cover Rue Mfg. Co 25 Safety Car Heating & Lighting Co 21 Saunders D., Sons 6 Seaboard Steel Casting Co 20 Sellers, Wm., & Co., Inc 16 Shaw Electric Crane Co — Sligo Iron & Steel Co 294 Smooth-on Mfg. Co 290 Southern Pacific R. R 291 & 8 Standard Car Truck Co 17 Standard Coupler Co 3 Standard Paint Co — Standard Steel Works 25 Standard Tool Co 17 Stannard & White 292 Star Brass Mfg. Co 16 Starrett Co., L. S 23 Sturtevant, B. F., Co 296 r
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ubber Co 11 Rogers Locomotive Works 34 Ross Valve Co 4th Cover Rue Mfg. Co 25 Safety Car Heating & Lighting Co 21 Saunders D., Sons 6 Seaboard Steel Casting Co 20 Sellers, Wm., & Co., Inc 16 Shaw Electric Crane Co — Sligo Iron & Steel Co 294 Smooth-on Mfg. Co 290 Southern Pacific R. R 291 & 8 Standard Car Truck Co 17 Standard Coupler Co 3 Standard Paint Co — Standard Steel Works 25 Standard Tool Co 17 Stannard & White 292 Star Brass Mfg. Co 16 Starrett Co., L. S 23 Sturtevant, B. F., Co 296 rabor Mfg. Co 16 Thompson. C. A. 6 Underwood, H. B„ &. Co S Union Pacific R. R 4 Union Switch & Signal Co 294 United States Metallic Packing Co 29 Utiea Steam Gauge Co — Valve Model 2 Vitrified Wheel Co 4th Cover Wachter Mfg. Co 288 Walworth Mfg. Co 2d Cover Watson-Stillman Co 4th Cover Westinghouse Air-Brake Co 28 Westinghouse Electric & Mfg. Co 29 Whittlesey, Geo, P 4th Cover Wiley, J., & Sons 292 Wood, R. D., & Co. 2d Cover Railway. .and locomotive. Copyright by Angus Sinclair Co. — J904 A Practical Journal of Railway Motive Power and Rolling Stock Vol. XVII. 174 Broadway, New York, July, 1904 No. 7 Horse Power. out of use, ;uul is merely a conventional the mean effective pressure to be seven \ horse power is 3,?.ooo foot pounds mode of describing the dimensions of a pounds per square inch. From these per minute, or, in other words, steam engine for the convenience of fictitious data and the area of the piston pounds lifted one foot in one minute, makers and purchasers of engines. The compute the horse power; that is, nomi- or one pound lifted feet in one mode of computing the so-called nomi- nal horse power = 7 X 128 X jV stroke
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