Telephone index

Details Telephone index Telephone index

1987-06-25

1989-09-12

Fox, John

Card, picture, or sign exhibiting

Register, or file

Shiftable file item or file item support

40336, B42F 1734

Patent

active

048647519

ABSTRACT:
The telephone index has a plurality of selection keys and a spring-operated drawer witha stack of index cards, which is held in the index housing by means of a locking device in such a way that on operating a selection key the drawer locking means is released and consequently the drawer with the selected index card and the index cards below it is extended, while the index cards located above the selected card are held back in the index housing by means of a card hold-back device released by the operated selection key and is constructed in such a way that the unlocking of the drawer on operating a selection key takes place by a drawer position change in such a way that in its front region the drawer is lowered counter to the tension of a spring element and simultaneously the drawer locking means is released on the upper edge of the housing opening for the drawer, so that the drawer can be extended, the drawer locking means comprising a stop cam shaped onto the upper edge of the front drawer terminal ledge and which ensures that in the inserted state the drawer is held in the index housing.

REFERENCES:
patent: 2968110 (1961-01-01), Quarnstrom
patent: 3167371 (1965-01-01), Parcher et al.
patent: 3276155 (1966-10-01), Conia
patent: 3423862 (1909-01-01), Koller
patent: 3721485 (1973-03-01), Begrer
patent: 3747244 (1973-07-01), Koller
patent: 4351125 (1982-09-01), Yuen

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