. Electric railway journal . transoms are also bolted, the whole form-ing a light gusset and tieing the two together to make a trussconstruction. Additional gussets are provided to join the tran-soms to the top angle frame and these in connection with therigid end frames make a very stiff truck. The transoms are4-in. x 6-in. angles cut away and resting upon the angles ofthe top side frame and bolted rigidly to the same. The bolsterconstruction is of the swing type. The bolster proper is 6-in. x 9-in. white oak, plated on eachside with 6-in. x %-in. steel with through rivets and providedwith re
. Electric railway journal . transoms are also bolted, the whole form-ing a light gusset and tieing the two together to make a trussconstruction. Additional gussets are provided to join the tran-soms to the top angle frame and these in connection with therigid end frames make a very stiff truck. The transoms are4-in. x 6-in. angles cut away and resting upon the angles ofthe top side frame and bolted rigidly to the same. The bolsterconstruction is of the swing type. The bolster proper is 6-in. x 9-in. white oak, plated on eachside with 6-in. x %-in. steel with through rivets and providedwith removable chafing plates. The spring plank is made oftwo pieces of ro-in. channel, forming the spring supports whichare tied together by two 3-in. x j^j-in. steel plates riveted to thechannels. The swing links are heavy steel swinging on 1 J^ bolts screwed into the transom and i^-in. pins passingthrough the channels and the side pieces of the swing bolts carrying the upper end of the swing links are further. Combination Passenger, Smoker and Baggage Car supported on the outside ends by angles bolted to the top of thetransoms and pinned fast. The center bearing is a Symingtonball-bearing secured to the bolster by through bolts. Thesprings used under the bolster are the eight coil springs (fouron each side) from the old No. 21-E single truck, but provisionwas made in case these were too weak to add two of the oldsemi-elliptic springs from the single truck. The No. 21-E side frames were cut off 20 in. from the outsideof the center of the pedestal jaws and angles were bolted tothe ends to which the 1%-m. x 3-in. end frames are boltedand the motor suspensions were mounted on the same. Theold wheels, axles and journal boxes of the No. 21-E truckswere used. The wheels were cast iron 30 in. in diameter, butthe clearance on the trucks was designed for 34-in. steel wheelswith a 3-in. tread. The side swing of the bolsters is cushionedby an ingenious arrangement as follows
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
