Identifier: cyclopediaofappl05amer (find matches)
Title: Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc.
Year: 1916 (1910s)
Authors: American Technical Society
Subjects: Electric engineering
Publisher: Chicago : American Technical Society
Contributing Library: Northeastern University, Snell Library
Digitizing Sponsor: Northeastern University, Snell Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
her unique features, has been lately developed in England.The system is very generally used, especially in Leeds and Bradford;installations are also under consideration in many other places. Trolley Wires. Figs. 14 and 15 give the construction of the sus-pension and collection devices. Four wires of No. 0000 W. S. G.hard-drawn copper are provided, thus avoiding breaking contactsin case cars meet each other. The trolleys may be suspended by 395 16 TRACKLESS TROLLEY TRACTION poles or brackets, or fastened to houses as the case may be, the twopositive wires being arranged inside and the two negative wires out-side. Direct current at 525 volts is supplied to the motors. Current-Collecting Device. The collector, which resembles theSchiemann, consists of two separate trolley poles on the ends ofwhich the collectors are fastened. The trolley wheel swivel pinruns on ball bearings and carries a tail spindle terminating in a ring,as shown in Fig. 15. The object of this ring is to facilitate the
Text Appearing After Image:
Fig. 17. View Showing How Trackless Trolley Can Draw Up to the Curb placing of the trolley wheels on the overhead wires, as shown inFig. 16. This arrangement allows the vehicle to run a distance of15 feet on either side of the trolley wires. Motors. A 20-horsepower motor drives each rear wheel bymeans of worm gearing and chain. Nine positions in the controllerare provided, 5 for series connections and 4 for parallel connections.The motors run at 1,050 revolutions per minute, which is equivalentto 10 miles per hour. Cars. The construction of the cars can easily be understoodby studying Figs. 17, 18, 19, and 20. The entrance is in front, sothat the motorman may act also as conductor. The wheels arefitted with solid rubber tires, one each for the front wheels and two 396

Note About Images