. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ch a certain portion ofthe power is transmitted by fluid and the remainder iscarried through mechanically, the proportion of the latterpart varying from 0 to 1 with the increase of velocityfrom nothing to full speed. Many designs of this kindhave been suggested in the last 20 to 25 years, mostlyfor automobiles, and some of them are now being devel-oped for locomotives. The Hall Transmission Fig. 1 represents two vertical cross sections through Abstract of a paper presented to the American Soc
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ch a certain portion ofthe power is transmitted by fluid and the remainder iscarried through mechanically, the proportion of the latterpart varying from 0 to 1 with the increase of velocityfrom nothing to full speed. Many designs of this kindhave been suggested in the last 20 to 25 years, mostlyfor automobiles, and some of them are now being devel-oped for locomotives. The Hall Transmission Fig. 1 represents two vertical cross sections through Abstract of a paper presented to the American Society of MechanicalEngineers. , , „ Part 1. published in the August, 1926, issue of Railway and Locomotive FXCINFERIVG. the 1 lall transmission. A is the primary shaft: it driveseccentric R of a multi-cylinder piston pump, the cylinderblock C of which is geared to the secondary shaft (notshown on the drawing) by means of wheel G. Cylinderblock C constitutes one unit with a multi-cylinderhydraulic motor .1/, the pistons of which, together withtheir rods r and eccentric strap s, can rotate around a. Fig. 1—The Hall Transmission fixed eccentric S. The actual eccentricity of the latterin relation to the axis of the cylinder block is controlledby a wheel W keyed to a shaft T which can be turned inan eccentric bushing V. The eccentricity of the latter isequal to that of eccentric 6. By turning it with shaft Tin bushing ], eccentric S can be placed either in linewith the prime-mover shaft and the cylinder block, in theother extreme, or in any intermediate position. The operation of the transmission is as follows: Beforestarting, shaft A rotates at full speed and drives eccentricR, which moves pistons p in cylinder block C. MotorM with pistons q and gear G is at a standstill. Theprimary part will now become a full-stroke piston pumpgenerating pressure inside the cylinder block. As thefluid has no other means of coming out than through thecylinders of the secondary part, it will push
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
