. Railway mechanical engineer . s are made in the diameter of thewheels. All moving connections are case-hardened to keepthe lost motion in the rigging to a minimum. The type of construction used in the Simplex clasp brakeproduces an even distribution of forces on all shoes. Inertia 596 October, 1917 RAILWAY MECHANICAL ENGINEER 597 has been reduced by providing the most direct method oftransmitting braking force and by keeping the weight of theparts as low as possible consistent with strength. Frictionhas been minimized by the swing hanger method of the rods all pass over some pa
. Railway mechanical engineer . s are made in the diameter of thewheels. All moving connections are case-hardened to keepthe lost motion in the rigging to a minimum. The type of construction used in the Simplex clasp brakeproduces an even distribution of forces on all shoes. Inertia 596 October, 1917 RAILWAY MECHANICAL ENGINEER 597 has been reduced by providing the most direct method oftransmitting braking force and by keeping the weight of theparts as low as possible consistent with strength. Frictionhas been minimized by the swing hanger method of the rods all pass over some part of the truck it ispractically impossible for any parts of the rigging to fallto the track. The design has been thoroughly tested by theAmerican Steel Foundries and is in extensive use. TYPE B RAGONNET REVERSE GEAR On the accompanying drawing is shown the general■arrangement of the Type B Ragonnet power reverse gear has recently been brought out by the EconomyDevices Corporation, New York, and is a modification of. Details of the Valve Rocker and Connections the well known Ragonnet reverse gear now in extensiveservice. The most noticeable modification in the gear is the method used in the older gear, has been retained and the methodof lapping the valve and maintaining air pressure in thecylinder is the same in principle as that previously em-ployed. The mechanical connections, however, have beenentirely changed and the gear possesses a number of operat-ing features impossible of attainment with the older design. Starting at the cab, it will be seen that the lower end ofthe reverse lever is connected to the top of the combinationlever, while the crosshead arm and the lower end of thecombination lever are joined by a connecting rod. Thevalve is operated by a rocker extending out through thevah-e chest gland 19, the end of the outside rocker armbeing attached to an intermediate pin connection in thecombination lever. For any position in which the reverselever may be
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
