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Adams & Westlake 1907 Catalog

Telegraph Train Order Signals

Index (In Original Catalog Order)

Nunn's Telegraph Train Order Signal

Description of Nunn's Telegraph Train Order Signal

Cowdery's Telegraph Train Order Signal

Description of Cowdery's Telegraph Train Order Signal

Swift's Telegraph Train Order Signal

Description of Swift's Telegraph Train Order Signal

	Nunn's Telegraph Train Order Signal The normal position of this signal is "danger," making it reliable and effective. Day signal-blade and lamp are mounted at the end of arm extending from station to any desired distance. Signals set from operator's desk. It has no springs or delicate machinery liable to get out of order. A brass cap covering the roller protects the working parts from the weather. By change in construction this signal can be adapted for a double-track signal, which will hold train from one direction while giving the right-of-way from another direction; or trains from both directions can be held or given the right-of-way at the same time.
	Explanation of Illustration: Nunn's Telegraph Train Order Signal H.-Lamp-holder and weather-cap. E.-Wood arm projecting from building. G.-Cylinder in which a roller works up and down the spiral slot. A.-Roller bolted to shaft or spindle "D." B.-Lever connecting with chain "C," leading to operator's desk. D.-Spindle or shaft holding disc and pivoting a lamp. Fitted with No. 61 Pressed Steel Lamp, unless otherwise specified.
	Cowdery's Telegraph Train Order Signal An effective signal, manipulated by the telegraph operator from his desk. Its use on the railroads which have adopted it has demonstrated its utility. It is always reliable, requiring neither weights, pulleys, strings, chains, wire, nor rope in its operation. There are no intricate parts to get out of order, and it shows at all times a positive signal of either "danger" or "clear." The signal always remains plumb and works perfectly. It is not affected by the warping of the wooden arm. A metallic covering protects the gearing from sleet and snow. The signal works freely, showing either at right angles to or parallel with the track, a positive danger or safety signal. Fitted with No. 61 Pressed Steel Lamp, unless otherwise specified.
	Swift's Telegraph Train Order Signal It is worked from the operator's desk, and he knows whether the signal is at "danger" or clear." Where there are "no orders" for trains, the target is parallel with the track and cannot be seen. The target is shown at right angles with the track (as illustrated in cut) when trains are to be held "for orders." At night, a white or green signal is shown with the "no orders" or parallel position of the target, and a red light is shown when trains are "to be held." It is changed in the same way as the target or day signal. Fitted with No. 61 Pressed Steel Lamp, unless otherwise specified.

Notes. Special thanks to Tim Eizinger (Thanks, Tim!) who provided these scans from the 1907 Adlake catalog.

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