Democratic Sentinel, Volume 17, Number 27, Rensselaer, Jasper County, 28 July 1893 — A Useful Device. [ARTICLE]

A Useful Device.

Devices for stopping engines from any part of a shop by means bf electricity are becoming quite common. They are usually operated by simply pressing a button similar to those used with call bells. A device in use at the shops of the Otis elevator works in Yonkers is very simple. When the throttle valve is opened it is connected with a cord and piston in such a manner that as soon a 3 steam is admittc d above the piston, it is forced down, and the cord, following the motion, closes the valve. The steam is admitted above the piston by means of an electric magnet which can be operated by buttons in nearly every room in the shop. Another device for the same purpose, but operating in an entirely different manner, is made by a Hartford company. This depends upon a strong coiled spring for its force. In opening the throttle this spring is coiled up, and if it is desired to stop the engine without waiting to notify the man in charge, it is only necessary to press a button, which releases the spring, allowing it to close the main steam valve. —St. Louis Globe-Demo-crat.