Keighley & Worth Valley Railway - OTW (One Train Working) - Damems Junction Signal Box

The line is worked by a ‘One Train Working’ system (O.T.W.) using a train staff containing an Annett’s key. All points on the main line, except those at Damems Junction, are secured by an Annett’s Lock. At Damems Junction, the O.T.W. staff is used to unlock the signal box lever frame. This splits the line into two block sections: Keighley to Damems Junction and Damems Junction to Oxenhope.

Here we see BR Standard Class 4MT 4-6-0, 75078 (1956, Swindon) and Waggon und Maschinenbau Diesel Railbus, M79964 (1958, Donauwöth) perform a well choreographed dance as they exchange tokens to move from one section of the line to the other.

BR Standard Class 4MT 4-6-0, 75078
Built: 1956 Swindon
Boiler Pressure: 225 psi
Tractive Effort: 25,520 lbf
Weight: 67.9 tons engine; 42.15 tons tender
Valve Gear: Walschaerts
Cylinders: 18″ x 28″ Outside
Withdrawn: 1966 Barry Scrapyard
Preservation: 1972 KWVR

Waggon und Maschinenbau Diesel Railbus, M79964
Built: 1958 Donauwöth
Car length: 41 ft 10 in (12.75 m) (over body), 45 ft 9 3⁄4 in (13.964 m) (over buffers)
Width: 41 ft 8 1⁄2 in (12.713 m) (over panels)
Height: 11 ft 9 in (3.58 m)
Maximum speed: 55 mph (89 km/h)
Weight: 15 tonnes (14.8 long tons; 16.5 short tons)
Traction system: 6-speed electro mechanical gearbox
Prime mover(s): Buessing
Engine type: 6-cylinder horizontal
Power output: 150 hp (110 kW) at 1,900 r.p.m.
Withdrawn: 1967 Millers Dale
Preservation: 1967 KWVR