Patent
1975-12-24
1977-07-19
Stellar, George G.
179 90FW, H04R 102, H04M 126
Patent
active
040370674
ABSTRACT:
A protective anti-vandalism device for a pay telephone. The device consists of an outer impact-resistant support member containing an annular raceway member having a reduced end portion engagable in the dial aperture of the telephone. A substitute disc-like dial is rotatably mounted in the raceway member by means of ball bearings between the periphery of the substitute dial and the raceway. The substitute dial has outwardly facing recesses circularly arranged and numbered to correspond with the dial numbers of the telephone and being registrable therewith when the support member is secured to the telephone around its dial aperture. A drive member is secured to the inside surface of the substitute dial in axial alignment with the zero recess and is engagable in the zero opening of the telephone dial rotary member. The annular support member has an inwardly projecting finger stop plug registrable with the finger stop plug of the telephone dial assembly when the support member is secured to the telephone around the dial aperture. Said support member is secured to the telephone by means of fastening screws passed through the wall of the telephone housing from the inside.
REFERENCES:
patent: 2644861 (1953-07-01), Jouban
patent: 2952740 (1960-09-01), Montrose
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