Printing – Rolling contact machines – Rotary
Patent
1977-11-15
1979-08-28
Fisher, J. Reed
Printing
Rolling contact machines
Rotary
101232, B41F 502, B41L 1510
Patent
active
041656890
ABSTRACT:
A device to be associated to a transfer means, generally a transfer cylinder, of an offset type printing machine including more than two units interconnected in series by said transfer means, the device performing the overturning of sheets for printing the sheet on both faces thereof, said device being completely external of said transfer means and including an auxiliary overturning cylinder provided with gripper means for fully detaching and winding thereabout sheets from said transfer cylinder, and a reversal and progressing mechanism adapted to engage the formerly trailing edge of the sheet wound about said cylinder and to said sheet, in the direction opposite to that in which it has been wound, to the or to one of the transfer means for positioning the other face of the sheet for printing thereon in the downstream unit or units.
REFERENCES:
patent: 214065 (1879-04-01), Tucker
patent: 1949001 (1934-02-01), Albrecht
patent: 2896535 (1959-07-01), Schunemann
patent: 3648605 (1972-03-01), Hottendorf
patent: 3772990 (1973-11-01), Weisgerber
patent: 3884146 (1975-05-01), Ruetschle
patent: 3963235 (1976-06-01), Snellman et al.
Drucker William Anthony
Fisher J. Reed
Officine Meccaniche Cigardi S.p.A.
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