Safes – bank protection – or a related device – Bank protection devices – Trapping mechanisms
Patent
1975-10-22
1977-12-20
Gilliam, Paul R.
Safes, bank protection, or a related device
Bank protection devices
Trapping mechanisms
49 42, E05G 502
Patent
active
040635198
ABSTRACT:
The premises to be protected have at least one laterally confined passage communicating therewith, such as an entrance passage, an exit passage, or both. Each passage has mounted therein at least one rotating door, of the type including a vertically oriented rotatable post and a plurality of angularly spaced elements secured to and extending radially from the post, the door being freely rotatable in a single direction to permit one person at a time to pass along the passage in the single direction. Approximately half the circumferential extent of each door is enclosed by a semi-cylindrical barrier, and a treadle or other type of depressible floor section, responsive to the weight of a person entering into the door and attempting to rotate the door in the direction opposite to such single direction, operates a locking means device preventing movement of the door in either direction so that such a person is trapped in the door or between two doors located serially along the passage. The treadle or the like may be biased to a position flush with the floor by a positive air pressure so that, if the air pressure line is severed, the treadle will automatically drop and lock the door against rotation. Safety enclosures may be associated with the rotatable doors to allow a hostage to move safely out of any line of fire along the passage. The passage may be designed with portions extending at angles to each other, or even in reverse direction, so that there is no clear line of fire along the passage. The angularly spaced elements may be formed with bulges, as may also the post, assuring that only one person can enter the door between adjacent angularly spaced elements at a time.
REFERENCES:
patent: 175845 (1876-04-01), Washburn
patent: 183410 (1876-10-01), Menan
patent: 1558058 (1925-10-01), Spottswood
patent: 1889853 (1932-12-01), English
patent: 1965030 (1934-07-01), Clark
patent: 3045615 (1962-07-01), Atchison
patent: 3285209 (1966-11-01), Pace
patent: 3658277 (1972-04-01), Anderson
patent: 3924546 (1975-12-01), Pretini
Corbin David H.
Gilliam Paul R.
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