THE SIGNAL BOX

OVERSEAS

THOMSON-HOUSTON ROUTE SETTING APPARATUS
Madrid, Zaragoza & Alicante / Red Nacional de los Ferrocarriles Espanoles

by John Hinson

Thomson-Houston Route Setting Apparatus
Photograph from the collection of Dr. J W F Scrimgeour

This unusual piece of signalling apparatus is a development from the Thomson-Houston miniature lever frame as illustrated at Barcelona Termino. Instead of individual levers working functions in a similar way to mechanical frames, the entire route for a train movement is set by the operation of the rotary knobs on the front of the apparatus. As a result, the work for the signalman is greatly simplified.

This installation is thought to be Puesto "A" on the former Madrid, Zaragoza & Alicante Madrid to Barcelona line, located at the Madrid end of the now closed and demolished station of the MZA at Zaragoza Campo Sepulcro (Cemetery in English!).

Puesto "A" had 16 "levers" and opened in September 1925. The station was replaced by Zaragoza El Portillo in 1970.

Additional notes by Jean Thouvenin

About the photographs



Comments about this article should be addressed to John Hinson