. Locomotive engineering : a practical journal of railway motive power and rolling stock . gine is theleading one, and the effect on the drivingboxes is just the opposite to that in theformer case, when the engine was movedahead. A clear knowledge of the theoryherein advanced is a decided benefit to theengineer, as it will enable him to make Truck Bolster—Northern PacificRailway. A truck bolster in which some original-ity in design is apparent, is shown in ourengraving of a bolster designed for carsof 60,000 to 70,000 pounds capacity on theNorthern Pacific. One of the principalfeatures^and sha
. Locomotive engineering : a practical journal of railway motive power and rolling stock . gine is theleading one, and the effect on the drivingboxes is just the opposite to that in theformer case, when the engine was movedahead. A clear knowledge of the theoryherein advanced is a decided benefit to theengineer, as it will enable him to make Truck Bolster—Northern PacificRailway. A truck bolster in which some original-ity in design is apparent, is shown in ourengraving of a bolster designed for carsof 60,000 to 70,000 pounds capacity on theNorthern Pacific. One of the principalfeatures^and shall we not say the mostvaluable to those interested in correct de-velopment of rolling stock?—is the totaland absolute obliteration of the old andfamiliar details in wood. The compression member is a steelchannel 40 pounds per foot, and the ten-sion members are four ij^-inch truss rodshaving ij^-inch ends, with a distance of10^ inches at the center between the twoparts sustaining the load. From the ar-rangement of the ends it will be noted thatit has the Barber roller bearings. Mal-. Locomotive EngineeringInner End Bearing Center Plate NORTHERN P.\CIFIC TRUCK BOLSTER. when the engine on left side now passesthe center and reaches the point where thepound takes place, the left box is forcedback against the wedge with a pound inproportion to amount of lost motion in thebox, which latter may be due to loosebrass, slack wedge, or improperly linedshoe or wedge, which are the principal•causes that contribute to the effect referredto. We find by moving the engine stillfurther to the point from which we started(upper quarter on right side) that whenthe engine on right side takes steam in theback of cylinder the main box on that sideis forward against the shoe, and no poundis produced after leaving the center. Also,that when the left side passes the tenterthe left box is back against the the question naturally suggests itselfto the reader, Why dont she pound afterpassing
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
