. Railway age gazette . vel ofthe trolley frame. Lines L, R and F represent the center linesrespectively of the leading truck, the rear truck and the trolleyframe. The trucks swivel on the trolley frame through angleA, which is limited by an adiustalile set screw Si in truck sideRt. Assuming iiolh trucks to be on the main track and approach-ing the switch, center lines L, R and F then lie in the same ver-tical plane and the angle A is zero. As the leading truck pro-ceeds around the curve of the spur, the trolley frame swingsaround with reference to the center line A of the rear truck,and the a
. Railway age gazette . vel ofthe trolley frame. Lines L, R and F represent the center linesrespectively of the leading truck, the rear truck and the trolleyframe. The trucks swivel on the trolley frame through angleA, which is limited by an adiustalile set screw Si in truck sideRt. Assuming iiolh trucks to be on the main track and approach-ing the switch, center lines L, R and F then lie in the same ver-tical plane and the angle A is zero. As the leading truck pro-ceeds around the curve of the spur, the trolley frame swingsaround with reference to the center line A of the rear truck,and the angle A increases. When the rear truck reaches thepoint wilt re the curve begins. ; shown in the engraving, the length of arc whose chord is the center line F, as this arc de-termines the angle A for which the set screw Si is adjusted;beyond this arc any longer radius may be employed. Set screwS2 in the truck side R2 provides for similar operation on lefthand switches. Both trucks embody the steering feature and the. Fig. -Means by which the Rear Truck is Automatically Com-pelled to Follow Through the Switch set screw adjustment, so that operation in both directions isidentical. Several installations of this monorail system are reported tolie in successful operation, the capacities ranging from two tosix tons. The hoist is built either with the single lift as shown,nr with a double hoist for handling the ordinary two-line clam-shell bucket, two separated holding lines being employed to pre-vent swiveling of the bucket. A PROCESS OF GASEHARDENINGWITH GAS A process of casehardening in which gas is used as the car-bonizing agent has recently been developed by the AmericanGas Furnace Company, 24 John street, Xew York. The processis performed in a slowly revolvirg cylindrical retort into whichthe carbonizing gas is injected under pressure. From this gasthe work absorbs \-olatile carbon, arrangements being providedfor venting the waste gas as required to insure a speedof
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1913
