The working of railway signals and points by electro-magnets, and controlling them, in conjunction with a complete block system, efficiently and economically by a current from a primary or secondary battery

✍ Scribed by Timmis, I.A.

• Book ID: 114460108
• Publisher: Institution of Electrical Engineers
• Year: 1885
• Weight: 564 KB
• Volume: 14
• Category: Article
• ISSN: 2054-0671
• DOI: 10.1049/jste-3.1885.0004