. Electric railway journal . nds upon foreign manufacturers to supply thebulk of this railway material. Applications for space atthe exhibit should be sent to the Buenos Ayres executivecommittee, of which A. Schneidewind, , is presidentand Ed. Schlatter, , secretary. 688 ELECTRIC RAILWAY JOURNAL. [Vol. XXXIII. No. 15. BLOCK SIGNALS IN DES MOINES A simple and reliable block and danger signal has beenin use on the lines of the Des Moines City Railway Com-pany and Interurban Railway Company for the past twoyears. Having tried various makes of signals on the cityand interurban lines during
. Electric railway journal . nds upon foreign manufacturers to supply thebulk of this railway material. Applications for space atthe exhibit should be sent to the Buenos Ayres executivecommittee, of which A. Schneidewind, , is presidentand Ed. Schlatter, , secretary. 688 ELECTRIC RAILWAY JOURNAL. [Vol. XXXIII. No. 15. BLOCK SIGNALS IN DES MOINES A simple and reliable block and danger signal has beenin use on the lines of the Des Moines City Railway Com-pany and Interurban Railway Company for the past twoyears. Having tried various makes of signals on the cityand interurban lines during the past seven or eight years block at station A passes under the lever 10, raising themovable armature or core 14, the upwardly projectingshaft 16 and the disk 18. Disk 18 then closes contacts20, 21 and 22. Current passes through the trolley con-nection 26 to contact 20, through the disk 18 to contacts21 and 22 in multiple. From contact 22 current passesthrough the connection 27 to holding solenoid 15, through 4 ■4 1 ±1. 5 TA Tl ON Si 5 TA Tl ON B S3 Fig. 1—Diagram of Circuits for Single Block, with Mechanical Trolley-Operated Switches with indifferent success and feeling the necessity of asimple and dependable signal, E. R. Cunningham, afterconsiderable experimenting, designed a one-wire signalwhich has been adapted to a number of interesting uses. The signal is built to be operated either electrically ormechanically by the trolley or car wheel. On city lines
Size: 2703px × 925px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
