Safety turnstile having the primary function of controlling the

Details Safety turnstile having the primary function of controlling the Safety turnstile having the primary function of controlling the

1983-04-12

1984-09-25

Downey, Kenneth

Movable or removable closures

Plural wings radiate from common pivot; i.e., revolving

Successive position-type; e.g., turnstile

E06B 1108

Patent

active

044729090

ABSTRACT:
A safety turnstile for permitting entry of the public in one direction and preventing exit of the public in the opposite direction comprises a rotary head which can be removed from the turnstile support post in a rapid and simple manner. The rotary head is tightly fitted on the central pivot which is secured to the top end of the turnstile post. Provision is made for an annular member fixed beneath the base of the head and for a ring provided with projecting lugs which are capable of resilient snap-action engagement within retaining recesses formed in the internal periphery of the annular member. When the lugs are inserted in the annular member, the ring is resiliently coupled with the head which can be released from the post only as a result of an upward thrust followed by a rotational displacement through an angle of 45 degrees.

REFERENCES:
patent: 987445 (1911-03-01), Driver
patent: 1007927 (1911-11-01), Davis
patent: 4203686 (1980-05-01), Bowman

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