. Electric railway journal . which the usual tackleand chains of a line car equipment are hung. Thecontrol equipment in the cab is arranged for double-end operation, each end being fitted with a controllerand a motormans air-brake valve. While the design of the tower proper is not unusual,since it is of the ordinary Trenton type with a liftingrange of 5 ft. 7 in., it is motor-operated by means of aworm gear and steel cables. One excellent feature is thatthe tower-operating motor is under the control of themotorman, who shifts its position as directed by a pushbutton and bell signal operated by
. Electric railway journal . which the usual tackleand chains of a line car equipment are hung. Thecontrol equipment in the cab is arranged for double-end operation, each end being fitted with a controllerand a motormans air-brake valve. While the design of the tower proper is not unusual,since it is of the ordinary Trenton type with a liftingrange of 5 ft. 7 in., it is motor-operated by means of aworm gear and steel cables. One excellent feature is thatthe tower-operating motor is under the control of themotorman, who shifts its position as directed by a pushbutton and bell signal operated by the man on thetower. Again, a good safety feature is that the lift ofthe raising mechanism is limited by equipping themechanism with an automatic circuit-breaker whichtrips when the tower reaches its upper or lower tower platform is of the revolving type, rein-forced by an over-truss rod. It is 14 ft. long x8 ft. wide, thus permitting a lineman to work on thetrolley wire over a parallel track when it has been re-. Toledo Derrick Tower Car—Interior View volved so that its length is at right angles to the car. This car body is mounted on Brill trucks equippedwith two GE-57 motors and air brakes. Heat is pro-vided in the cab by four electric car heaters. The der-rick, which is also an unusual feature in cars designedfor this purpose, is hand-operated by a two-handlewinch. It was designed to lift 3 tons. The winchmerely raises and lowers the boom, the load beingelevated by means of a differential chain hoist swungfrom the outer end of the boom. The addition of thederrick to this car has materially increased its only is it adaptable for loading poles and wire ontothe car floor, but in emergencies it can be used for al-most any purpase for which its capacity is fitted. In service this car has proved very satisfactory inemergency repair and new construction work. It hasbeen found, however, that about 10 ft. additional lengthin the car body would prove very adv
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
