| 摘要 |
326,769. Cardoza, J. B. N. Dec. 17, 1928. Railway toys.-The motors M, M<1> of two toy electric trains are controlled through live rails 10, 11 by a common master switch 20 arranged to send impulses of current simultaneously to ratcheting magnets 22, one or each train, which step round drum controllers. Contacts are disposed on the drums so as to give in succession all the possible combinations of forward running, stopping, and backward running of both trains. The invention may be extended to three or more trains. A movable-arm rheostat 17 allows, the speed to be varied. |
