Land vehicles – Convertible – Occupant propelled
Patent
1976-01-21
1977-06-14
Song, Robert R.
Land vehicles
Convertible
Occupant propelled
280231, B62K 1300
Patent
active
040293262
ABSTRACT:
A bicycle construction for tandem operation includes an auxiliary drive means which may be attached to a conventional single operator bicycle between the main drive means and the rear wheel to permit operation by two occupants. The auxiliary drive means comprises a pair of first auxiliary sprockets each connected to an associated one of a pair of independently supported rotary pedals each of which is coupled to an associated fork of a forked rear wheel support. A pair of second auxiliary sprockets is mounted on the main drive means, each of the second auxiliary sprockets being coupled to a respective one of the main rotary pedals. A pair of support columns coupled to the bicycle frame may be provided to serve as an auxiliary seat support, at one end, and as an auxiliary rotary pedal support at its other end. The auxiliary crank arms associated with the auxiliary rotary pedals may be coupled to eccentrically mounted bearing for adjusting the spacing between the auxiliary drive means and the main drive means.
REFERENCES:
patent: 516435 (1894-03-01), Hasbrouck
patent: 599859 (1898-03-01), McFadden
patent: 2227799 (1941-01-01), Sizelove
patent: 2277727 (1942-03-01), Swanson
patent: 2385892 (1945-10-01), Swanson
patent: 2723132 (1955-11-01), Oberwegner
patent: 3913944 (1975-10-01), Blow, Jr.
Song Robert R.
Woldman Jesse
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