Railroad crossing bells
Chicago of to-day. The metropolis of the West. The nation's choice for the World's Columbian exposition ... 1891
|Railroad crossing bells
|Caption: "Hall Signal Co." From text: "The Hall Signal Co. of 50 Broadway, New York, and 340 The Rookery, Chicago, are manufacturers of all kinds of Electric and Mechanical Signaling apparatus for railroads. The Hall Automatic Electric Block Signal System is in operation on twenty-one of the leading railroads of this country. On the opposite page is shown an application of the Hall highway crossing alarm bell at S. Union street, Chicago."
|Link to the Full-Text
|No Copyright - United States
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|Chicago of to-day. The metropolis of the West. The nation's choice for the World's Columbian exposition ... 1891
|Author of the Book
|Acme Publishing and Engraving Co., Chicago.