. American engineer . wn by theserods; this cannot be done with a chain connection. The doors have been made stronger and are more heavilybraced, than has been the practice in the past, to prevent dis-tortion and damage from loading with steam shovels, underwhich hard usage it is difficult to keep the doors in goodshape. The crank shafts at either end of the doors are equippedwith segmental gears, connected by means of a rack gear alongthe side of the car. which insures perfect unison of action at eachend of the door, both in opening and closing it; also does awaywith the use of chains, as app
. American engineer . wn by theserods; this cannot be done with a chain connection. The doors have been made stronger and are more heavilybraced, than has been the practice in the past, to prevent dis-tortion and damage from loading with steam shovels, underwhich hard usage it is difficult to keep the doors in goodshape. The crank shafts at either end of the doors are equippedwith segmental gears, connected by means of a rack gear alongthe side of the car. which insures perfect unison of action at eachend of the door, both in opening and closing it; also does awaywith the use of chains, as applied to some of the earlier cars ofthis type. There is also an auxiliary latch which operates on therack gear as an extra precaution to avoid accidental opening ofthe doors. The general design of the car is in accordance with the best for safely carrying 50 tons of ore and providing the necessaryconstruction to make the car discharge its load freely. Mate-rial has Iieen liberally used where necessary to insure the car. Interior of Self-Clearing Ore Car. operating with a minimum cost for maintenance and operation.■ The trucks are of the arch bar type with 5A in. x 10 in. jour-nals and ha\e pressed steel bath tub type bolsters and pressed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
