Electrical world (1904) (14784537182)

Identifier: electricalworld43newy (find matches)

Title: Electrical world

Year: 1883 (1880s)

Authors:

Subjects: Electrical engineering

Publisher: (New York McGraw-Hill Pub. Co., etc.)

Contributing Library: Engineering - University of Toronto

Digitizing Sponsor: University of Toronto

Text Appearing Before Image:

with the Leicester Art School. Span wire construction has beenadopted generally, but where streets and roads are wide enough centerpoles have been introduced, as shown in Fig. ^. In the center ofthe town, where suitable attachments could be obtained, poles havegiven way to rosettes, except at junctions, these being erected on polesthroughout. Each center pole has been fitted with two incandescentgas lamps, and the vase is protected by a neat elliptical guard curb.Side bracket arms have been used on one short length to the numberof nine, each 17 ft. 6 in. long, also on the siding to the powerstation. The trolley wire is No. 000 B. & S. gauge throughout, except atthe car houses, which are wired with No. o; and the span and guardwire are of galvanized steel, 7-12 and 7-16 respectively. Flexiblesuspension and double insulation have been adopted throughout.Line fittings of extra strong design have been used throughout, theinsulator bolts being of drop-forged mild steel, screwed J4 in.

Text Appearing After Image:

FIG. 7.—PLAN OF FEEDERS. Four sizes of section and feeder pillars are used. These are fittedwith white marble panels, which carry the various quick-breakswitches, kicking coils and safety fuses for automatically discon-necting the overhead line in case of failure. The feeders are con-nected up to the main switchboard at the power station through auto-matic circuit-breakers, which are set to cut out any one of thefeeders should a short-circuit occur on any of the sections suppliedby that feeder, thus insuring that should a trolley wire break on anyportion of the line either the fuses in the nearest section pillarswould blow, or the circuit-breaker at the station would open, ren-dering that portion of the line dead. Each pillar is also fitted witha Garton lightning arrester, and an ebonite panel carrying the testand telephone terminals. All holes in the panels are fitted withebonite bushes and washers. A specially designed telephone shutter, operated by a separatekey, has been fitted

electrical world and engineer 1904 patterns marbled paper engineering electrical engineering electric power images from internet archive canada

1904

University of Toronto

http://commons.wikimedia.org/

public domain