Printing – Selective or progressive – Bed and platen machines
Patent
1978-08-22
1980-10-14
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101 931, 101 95, 101110, 101 35, B41J 778
Patent
active
042274540
ABSTRACT:
A marking head rotatably supports a plurality of marking wheels that are supported for rotation by a shaft positioned in the marking head. The marking wheels each include a periphery with a plurality of marking characters positioned thereon for marking plates, name plates, identification plates and the like with a preselected marking character. A preselected marking character for each wheel is positioned in marking position by rotating the respective marking wheel through a preselected angle which is preferably the angle for advancing the next adjacent character into marking position. A plurality of fingers are rotatably positioned on a shaft for engaging a ratchet portion of a respective wheel. Each finger is rotatably supported to selectively move into and out of engagement with the respective ratchet portion by operation of an air actuated plunger abutting the end of the finger. After selected fingers are moved into engagement with the corresponding marking wheels, the shaft supporting the fingers is moved downwardly in an arcuate path through a preselected angle to move the fingers through a corresponding angle and thereby rotate the marking wheels engaged by the fingers through a preselected angle. The engaged marking wheels are turned so that the marking characters or indicia positioned in marking position are moved out of marking position and the next adjacent characters on the periphery of the marking wheels are moved into marking position. Once the selected indicia are moved into marking position, the fingers are disengaged from the respective ratchet portion and rotated backwardly in an arcuate path to their initial position.
REFERENCES:
patent: 2891469 (1959-06-01), Payne et al.
patent: 2909992 (1959-10-01), Rockefeller
patent: 2922361 (1960-01-01), Adler et al.
patent: 3149562 (1964-09-01), Wilkins et al.
patent: 3603251 (1971-09-01), Elsworth et al.
patent: 3616749 (1971-11-01), Ritzerfeld
patent: 3840104 (1974-10-01), Groppini
patent: 3865030 (1975-02-01), Chida et al.
patent: 4036127 (1977-07-01), Speicher
Adams John M.
Coven Edward M.
M. E. Cunningham Company
Price, Jr,. Stanley J.
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