Railway rolling stock – Trucks – Supplemental wheel
Patent
1977-05-23
1979-01-09
Makay, Albert J.
Railway rolling stock
Trucks
Supplemental wheel
105215R, B62D 6112
Patent
active
041332695
ABSTRACT:
The retractable railroad wheel assembly for a road vehicle includes an axle for placement beneath a vehicle which extends across the normal direction of movement of the vehicle, and railroad wheels mounted on the ends of the axle. A pair of linkage assemblies are mounted at each end of the axle inwardly of the wheels for connection to the vheicle, and each linkage assembly includes a wheel support arm pivotally connected at one of its ends to a first support bearing mounted on the vehicle and connected at its other end to the axle for moving the axle and wheels through an arc beneath the vehicle between an upwardly retracted position beneath the vehicle and a downwardly distended position where the wheels engage the rails of a railroad track. An actuating linkage is connected between the axle and another support bearing mounted on the vehicle and includes a fluid actuated ram for folding and unfolding the linkage to retract and distend the wheels. The ram and actuating linkage are proportioned so that the ram and linkage have their greatest downward effective forces applied to the wheels as the wheels first engage the railroad tracks and begin to support the vehicle from the tracks.
REFERENCES:
patent: 3263628 (1966-08-01), Grove et al.
patent: 3730105 (1973-05-01), Holley
patent: 4048925 (1977-09-01), Storm
Makay Albert J.
Rowold Carl
LandOfFree
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