Anti theft device for a printing machine print wheel assembly

Details Anti theft device for a printing machine print wheel assembly Anti theft device for a printing machine print wheel assembly

1984-03-21

1985-05-14

Burr, Edgar S.

Printing

Selective or progressive

Bed and platen machines

101 91, B41J 154

Patent

active

045164940

ABSTRACT:
A printing machine such as a postage meter has the capability of printing value indicia on material by means of a printing device having a plurality of selectably positioned printing wheels with a plurality of spaced apart numerical printing members arranged about the periphery of each wheel. The printing wheels are mounted for rotation on a common axis and each wheel has a concentrically located gear mounted on one side. The number of gear teeth in each printing wheel gear corresponds to the number of printing members and tooth spaces located in drivem members which mesh with the printing wheel gears in a predetermined synchronous relationship associated with the drive members. The printing wheel gears further have non-disfigured gear teeth as well as at least one disfigured gear tooth which meshes with correspondingly shaped spaces on each drive member so that any forced change in the synchronous relationship will render the postage meter inoperative.

REFERENCES:
patent: 1965724 (1934-07-01), Sanglier et al.
patent: 3064491 (1962-11-01), Bishop
patent: 3428948 (1969-02-01), Simjian
patent: 3469777 (1969-09-01), Anderson et al.
patent: 3502266 (1970-03-01), Clemons
patent: 3823666 (1974-07-01), Hanson
patent: 4036073 (1977-07-01), Kitano

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