| 摘要 |
A cylindrical tumbler lock including a barrier member between and interfacing a first and second connected latch operating members, the members having corresponding holes receiving spring biased split pin tumblers, a key positioning the tumblers for interfacial clearance between the members for rotation and operation of a latch member, the holes in one of the members being larger, the split tumblers in the holes of the first latch operating member including false segments of the tumblers and the tumblers extending to the face of the lock or some extending near thereto whereby the lock is caused to be very resistant to picking or manipulation.
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