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Identifier: electricrailway421913newy

Title: Electric railway journal

Year: 1908 (1900s)

Authors:

Subjects: Electric railroads

Publisher: [New York] McGraw Hill Pub. Co

Contributing Library: Smithsonian Libraries

Digitizing Sponsor: Smithsonian Libraries

  

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type ofgovernor. Consequently the constant operation of thecompressor is not required as d,t is in the case of atomizingdevices. A compressor that will furnish 60 cu. ft. per houris ample for the needs of the machine. The accompanying illustration shows the equipmentmounted on a short single car, but it may be applied to adouble-truck car equally well. The auxiliary burner isstarted with alcohol or gasoline, and after it has reachedthe vaporizing temperature it becomes self-vaporizing. Itsflame does not strike the large coil but heats a bushingwithin it, and the bushing in turn heats the large coil tovaporize the oil which flows into it. Vol. XL1I, No. 7. 50-TON, 600-1200-VOLT FREIGHT LOCOMOTIVES FORBRITISH COLUMBIA Five 50-ton electric freight locomotives have recentlybeen built for the British Columbia Electric Railway Com-pany, Vancouver, B. C, similar to the 60-ton locomotivesof the Southern Pacific Company which were described inthe Electric Railway Journal for Oct. 5, 1912. They

 

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British Columbia Locomotive—Side View are of the double-truck type with a steel central cab ofsteeple form. Each locomotive is equipped with four WestinghouseNo. 308-D-3 box-frame commutating-pole 600-1200-voltrailway motors and type HB unit switch control. For1200-volt operation two motors are permanently connectedin series. The control equipment consists of the followingapparatus: two master controllers, two switch groups, tworeversers, one series-parallel switch, one line switch, onecontrol resistor, two hand-operated change-over switchesand two sets of storage batteries (ten cells, each set giving20 volts). All control equipment, except the master controller, isinclosed in a wire cage supported by an angle-iron frame-work in the center of the locomotive cab. The grid re-

  

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Thanksgiving 2010 Dad's home in Myrtle Beach.

Identifier: electricrailway421913newy

Title: Electric railway journal

Year: 1908 (1900s)

Authors:

Subjects: Electric railroads

Publisher: [New York] McGraw Hill 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.

  

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British Columbia Locomotive—Side View are of the double-truck type with a steel central cab ofsteeple form. Each locomotive is equipped with four WestinghouseNo. 308-D-3 box-frame commutating-pole 600-1200-voltrailway motors and type HB unit switch control. For1200-volt operation two motors are permanently connectedin series. The control equipment consists of the followingapparatus: two master controllers, two switch groups, tworeversers, one series-parallel switch, one line switch, onecontrol resistor, two hand-operated change-over switchesand two sets of storage batteries (ten cells, each set giving20 volts). All control equipment, except the master controller, isinclosed in a wire cage supported by an angle-iron frame-work in the center of the locomotive cab. The grid re-

 

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British Columbia Locomotive—Control Equipment sistors are mounted in the roof of the locomotive cab overthe unit switch apparatus in a portion framed off and ven-tilated through the roof by means of two ventilators. Thetwo master controllers have three running notches on 600volts and two on 1200 volts. An interesting item of this equipment is the series-parallel switch. This switch is controlled by a single-pole,double-throw knife switch at either end of the cab. On1200 volts the connections are so arranged on the change-over switch that the series-parallel switch is in the 1200- ELECTRIC RAILWAY JOURNAL August 16, 1913.] ELECTRIC RAILWAY JOURNAL 273 volt position connecting two motors in scries regardless ofthe position of the knife switch. On 600 volts the connec-tions on the change-over switch are so altered on changingover to the 600-volt position that the motors of each pairby means of the series-parallel switch may be thrown eithertwo in series or two in parallel, whereas in t

  

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Spock gives leftover Lunch 2.0 food to the St. Vincent de Paul Society.

 

Photo taken by Peter Robinett's cameraphone.

Identifier: s05philosophicalmag13londuoft

Title: The Philosophical magazine; a journal of theoretical, experimental and applied physics

Year: 1798 (1790s)

Authors:

Subjects: Physics

Publisher: London Taylor & Francis [etc.]

Contributing Library: Gerstein - University of Toronto

Digitizing Sponsor: Ontario Council of University Libraries and Member Libraries

  

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atus would fix a limit far before any such speed wasreached. It does not, however, appear to be beyond the markto say, that the sensitiveness could be in this method madefifty times as large as that of the ordinary mode of experi-menting. The conclusion expressed in equation (3) has been experi-7)ie7itally verified by comparing 0 and 6 with the followingarrangement:—A single Leclanche cell sends a current throughthe primary of a certain pair of coils. The secondary is con-nected up to the galvanometer; and the induced current atbreaking is used to deflect the needle. To obtain a constant succession of transient secondary cur-rents in the same direction, the apparatus shown in the sketchis used:—A is a cylinder of hard dry Avood 5^ inches in dia-meter, which rotates on its axis 6 c in the direction of thearrow. On the surface of A are fixed the brass strips B, C,five in each row : the pieces B are in metallic connexion witheach other and also with h; similarly the pieces C are con-

 

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nected to the other end of the axis c. F, G are springs keep-ing an electrical contact with h c respectively whilst the axisrotates. D, E are springs pressing firmly on the cylinder, andmaking contact with the brass strips when they pass under-neath. F, D are inserted in the primary circuit; E, Gin thesecondary. Thus the secondary circuit is only closed betweeneach break and make of the primary ; and only the inducedcurrent at break flows in it. It is found that when the cylinder is rotated, a steady de-flection of the needle is obtained, which increases with thespeed of rotation, as equation (2) leads us to expect. 98 Mr. J. Le Conte on With the coils mentioned above and with one Lechanch^in the primary, d ^vas 13 scale-divisions (the galvanometerbeinfr shunted), t was 7^ seconds, or about 27r. When thecylinder was making about 4 revolutions per second (giving20 breaks per second), <p was found to be a little over 500;that is, the light was off the scale. Now equation (3) gives &l

  

Note About Images

Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.

Spock gives leftover Lunch 2.0 food to the St. Vincent de Paul Society.

 

Photo taken by Peter Robinett's cameraphone.

Spock gives leftover Lunch 2.0 food to the St. Vincent de Paul Society.

 

Photo taken by Peter Robinett's cameraphone.

Lunch 2.0 at RockYou!