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

 

作者: Illius A.Timmis,  

 

期刊: Journal of the Society of Telegraph-Engineers and Electricians  （IET Available online 1885）
卷期: Volume 14, issue 55  

页码: 56-56

 

年代: 1885

 

DOI:10.1049/jste-3.1885.0003

 

出版商: SocTE

 

数据来源: IET

 

 

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