. Electric railway journal . 3-in. x 3-in. x i-in. angle ring, the bearing surface of the tower corners being steel tower is revolved by hand and is held in positionby cam levers. It is also raised and lowered by hand,an eight-tooth sprocket on the crank operating a forty-tooth sprocket on the drum axis by means of a Jeffrey detachable chain. This operation is easilyaccomplished by one man. Details of the tower equip-ment are shown in the accompanying illustrations. A supply of tools and small equipment is carried inboxes at the back of the truck while ropes, tackle, largerequ
. Electric railway journal . 3-in. x 3-in. x i-in. angle ring, the bearing surface of the tower corners being steel tower is revolved by hand and is held in positionby cam levers. It is also raised and lowered by hand,an eight-tooth sprocket on the crank operating a forty-tooth sprocket on the drum axis by means of a Jeffrey detachable chain. This operation is easilyaccomplished by one man. Details of the tower equip-ment are shown in the accompanying illustrations. A supply of tools and small equipment is carried inboxes at the back of the truck while ropes, tackle, largerequipment, 500 ft. of span wire and 200 ft. of trolleywire are hung conveniently on hooks on the sides ofthe toAver. Signals are transmitted to the driver by agong located on the tower. The cab is entirely inclosedfor cold or inclement weather, although windows on allsides can be lowered when desirable. The trucks areequipped with 4-in. single tiros in front and 4-in. dualtires in the rear. These tires give an average of 10,000. RACK WITH BRAKE FOR TROLLEY WIRE REEL,ON TOWER CAR miles. The trucks weigh stripped from 6500 to 7100 the crew comprises three men. Car Towers Similar to Those on Trucks The towers for the cars are veiy similar in construc-tion to those used on the trucks. The vertical membersare the same but the cross-bracing is I in. x 3 in. in 122 Electric Railway Journal Vol. 54, No. 3 the lower section and the same in the upper the auto tower measures about 4 ft. square thetower on the cars is about 4 ft. wide by 6 ft. long. Thistower also is not quite as high, either lowered orraised, as is the auto tower and has a little greateroverhang. The rotation feature on these towers isthe same as that already described, the radius of rota-tion in this case, however, being 3 ft. 9 in. The ar-rangement for lowering and raising these towers is sim-ilar, with the exception that one tower is equippedwith a three-cylinder air motor for air operation. The capac
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
