Railway rolling stock – Trucks – Supplemental wheel
Patent
1975-01-22
1976-03-23
Love, John J.
Railway rolling stock
Trucks
Supplemental wheel
B61F 1300
Patent
active
039453260
ABSTRACT:
The vehicle disclosed herein is provided with a running gear composed of two transverse aligned drive units each provided with a wheel axle having mounted on the outer end thereof a rail wheel and a tire wheel. The inner ends of the drive units are connected by means forming a movable joint between such inner ends to enable the units to be moved from positions in which the rail wheels are operable and the tire wheels are inoperable to positions in which the tire wheels are operable and the rail wheels are inoperable, such connecting means also including means to restrict the relative movements of the two drive units. The two drive units are pivotally connected to the vehicle by means which enables lateral movement of such units during the pivotal movements of the latter in one direction or the other. Means are provided to raise the jointed inner ends of the drive units to transfer the drive of the vehicle from rail wheels to tire wheels and to lower such jointed inner ends of the drive units from their raised position to return the drive of the vehicle to rail wheels. The rail wheels each have a riding surface which converges toward the flange thereof so that a line projecting inwardly from such surface is disposed at a given acute angle to the central longitudinal axis of the wheel axle. The tire wheels have a tread surface which converges outwardly so that a line projecting outwardly from such surface is disposed at a given acute angle to the central longitudinal axis of the wheel axle. The tire is mounted on a frusto-conically shaped rim of such angularity that a line projecting outwardly from such rim is parallel to said projecting tread surface line.
REFERENCES:
patent: 2043703 (1936-06-01), Main
patent: 2162351 (1939-06-01), Main
patent: 3020858 (1962-02-01), Perkins et al.
patent: 3434432 (1969-03-01), Seifert
Hart John J.
Love John J.
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