Mine locomotive

Details Mine locomotive Mine locomotive

1978-04-14

1980-07-15

Beltran, Howard

Railway rolling stock

Locomotives

Electric

105329R, 105364, 105456, 180 77S, 188170, B60K 2700, B60K 3300, B61C 300

Patent

active

042122503

ABSTRACT:
A personnel carrier for use in an underground coal mine comprises a rail vehicle having driving cabs at opposite ends thereof with driving controls in each cab. Power is supplied from a battery mounted between the cabs to an electric driving motor arranged to drive one of a pair of axles or both axles as desired through one or more respective gearboxes. Safety features include an isolating switch operable from either cab, a flameproof rotary switch disposed substantially midway between the two cabs for activating one set of driving controls or the other and operable from outside the vehicle and an emergency braking circuit. Normal braking is electrical and achieved by moving a single control lever from power to braking. The emergency brake comprises a disc brake unit on each axle urged to the on position by springs but held in the off position hydraulically providing that a foot pedal in the activated cab remains depressed.

REFERENCES:
patent: 378864 (1888-03-01), Bauer
patent: 384580 (1888-06-01), Julien
patent: 1053062 (1913-02-01), Palmros
patent: 1270628 (1918-06-01), Larson et al.
patent: 1291581 (1919-01-01), Mancha
patent: 1692873 (1928-11-01), Sloane
patent: 2333504 (1943-11-01), Alben
patent: 3501040 (1970-03-01), Martelee
patent: 3750834 (1973-08-01), Luft
patent: 3785325 (1974-01-01), Mycroft
patent: 3954304 (1976-05-01), Engle
patent: 3963262 (1976-06-01), Estel

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