File:Operation of trains and station work and telegraphy (1916) (14758850695).jpg

Identifier: operationoftrain02prio (find matches)
Title: Operation of trains and station work and telegraphy
Year: 1916 (1910s)
Authors: Prior, Frederick John, 1858- (from old catalog) comp
Subjects: Railroad trains Railroads
Publisher: Chicago, F. J. Drake & co
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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Text Appearing Before Image:
s fal-as it will go, which raises the armature (Figure 123-J)up to the magnets (Figure 123-K), transferring the cur-rent from the bell L to the magnet (Plate 9, K-88),closing the circuit as shown in red on Plate 9, and at thesame time closing the circuit on 360-K, shown in greenon Plate 9, after which the preliminary spindle handle(Figure 120-B) is permitted to automatically return toits normal position. This unlocks the revolving drum(Figure 123-C) and indicates the fact by displaying awhite instead of a red disc in the indicator at Figure122-H. The operator now moves the end staff (Figure120-E) up the vertical slot into engagement with thedrum (Figure 123-C), the outer guard (Figure 122-N)having first been turned to the right position, revolves thelatter through a half turn, using the staff as a handle,and finally withdraws the staff through the opening atFigures 120 and 124-M. In making the half turn thedrum (Figure 123-C) has reversed the polarity of the STATION AND TRAIN WORK 399
Text Appearing After Image:
FIG. 121. ABSOLUTE STAFF INSTRUMENT.Rear View with Cover Removed Showing Armature Dropped. 400 RULES FOR MOVEMENT OF TRAINS

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