File:The Street railway journal (1906) (14756611024).jpg

Identifier:streetrailwayj271906newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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:
ig-naling apparatus, is driven by a 240-volt, 6-hp, single-phasemotor running at 500 r. p. m. As under ordinary circum- . Under this title Frank J. Sprague contributes an articleto this weeks issue of the Electrical World, discussingthe history of the modern inter-pole motor, and its adapta-bility to heavy electric railway operation at 1500 volts. Mr.Sprague refers to a number of his early patents on electric mo-tor design, in which two sets of field coils are used. One setwas normal. The other two poles were variable, dependenton the current flow through the armature, and their objectwas to prevent field distortion and consequent sparking atthe brushes. The effect of this construction was practicallyto produce an inter-pole motor. This system was used by Mr.Sprague in both his stationary motors and elevated-railwaymotors built in 1886. With this system, he believes thatelectric locomotives can be used to restore energy to theline on down grades and that 1500 volts, d. c. in the motor
Text Appearing After Image:
VIEW OF THE 15,000-VOLT, SINGLE-PHASE LOCOMOTIVE ON THE SEEEAt H- WETTINGEN LINE can be employed without difficulty. He also believes thatthe compensating coils used on some commutating types ofa. c. motors are for the same practical purpose and are conse-quently the reincarnation of his old method for neutralizingarmature reaction. February 24, 1906.) STREET RATLWAY JOURNAL. 307 LARGE ELECTRIC AND STEAM LOCOMOTIVE Considering $1.25 per net ton as a base cost for fuel de- livered at the power plant, the average total operating and An interesting paper on this subject was presented Feb. 16 maintenance expenses during the year for generating the before the New York Railroad Club, by J. E. Muhlfeld, current, the labor and material for the locomotive electri- general superintendent of motive power of the Baltimore cai and mechanical repairs, the engineers wages, wiping, & Ohio Railroad. The author first described the six electric lo- hostlering, inspecting, oiling, dispatching, lubric

Note About Images