| 摘要 |
A coaxial double-barrel lock operable by a tubular key comprises, in the inside of two cylindrical hollow plugs (10a, 10b), two rotatively coupled oppositely horizontally extending stems (20a, 20b), each whereof is able of sliding in the related hollow plug (10a, 10b), including at the ends thereof adjacent the lock bit a respective portion (18a, 18b), one (18a) whereof is normally kept in rotary engagement with a through opening (24) in the lock bit by a spring (25), and the other (18b) is rotatively engageable in the opening upon displacement of its stem (20b) axially by the insertion of the tubular key.
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