| 摘要 |
<p>A single-throw bar lock operating with a conventional cylinder, comprising two parallel toothed plates, two bars fixed to them, a main gear wheel and an auxiliary gear wheel which are interposed between said toothed plates and engage with them, said main gear wheel being in the form of a ring gear which is incomplete due to the presence of a slot, said auxiliary gear wheel being a complete circular gear wheel and each of said toothed plates having a discontinuity in the toothing by virtue of a recessed portion.</p> |
