Apparatus for advancing a record medium

Details Apparatus for advancing a record medium Apparatus for advancing a record medium

1979-09-17

1981-07-21

Coven, Edward M.

Typewriting machines

For line-spacing by incremental rotation of platen

By irregular increments of platen rotation

400550, 400571, 4003141, B41J 1996

Patent

active

042795249

ABSTRACT:
An apparatus which may be used, for example, for feeding a record medium in a printer. The apparatus includes a rotatable member having means thereon for connection to the platen of the printer, and also having teeth on the periphery thereof and a driving surface thereon. The apparatus also includes a rotatable driving unit having at least one driving member or camming lug thereon to engage the teeth and thereby incrementally rotate the rotatable member as the driving unit is rotated. The apparatus further includes a coupling means moveable between first and second positions whereby the coupling means is operatively disconnected from the driving unit and the rotatable member when the coupling means is in the first position, and whereby the coupling means when in the second position is effective to disconnect the camming lug from the teeth and to also operatively connect the driving unit with the driving surface to continuously rotate the rotatable member as the driving unit is rotated.

REFERENCES:
patent: 687496 (1901-11-01), Corr
patent: 965346 (1910-07-01), Uhlig
patent: 1985959 (1935-01-01), Stickney
patent: 2917153 (1959-12-01), Westaver
patent: 3272303 (1966-09-01), Pohl
patent: 3820646 (1974-06-01), Lombardi
patent: 3856128 (1974-12-01), Taggart
patent: 3960258 (1976-06-01), Aebi
patent: 4013159 (1977-03-01), Okabe

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