Adjusting device for varying a phase angle between an input shaf

Details Adjusting device for varying a phase angle between an input shaf Adjusting device for varying a phase angle between an input shaf

1991-09-11

1992-12-15

Crowder, Clifford D.

Printing

Rolling contact machines

Rotary

474117, 474900, B65H 534

Patent

active

051707071

ABSTRACT:
An adjusting device for varying a phase angle between a drive shaft and a driven shaft of an endless chain drive extending between a sheet feeder and a printing unit of a printing press and being formed with a tight side and a slack side defining an inner space therebetween includes a first tensioning element for applying a tensioning force outwardly from the inner space against the slack side of the endless chain drive, a second tensioning element for applying a tensioning force outwardly from the inner space against the tight side of the endless chain drive, a slide carrying the first and the second tensioning elements and being displaceable substantially perpendicularly to a plane in which the drive shaft and the driven shaft are disposed, and one additional chain tensioning device for applying a force from outside the endless chain drive against the slack side thereof, the additional chain tensioning device being adjustably movable with respect to the first tensioning element.

REFERENCES:
patent: 1819743 (1931-08-01), Duncan
patent: 2352797 (1944-07-01), Miller
patent: 3166947 (1965-01-01), Hendershot
patent: 3913410 (1975-10-01), Ackerman
patent: 4557711 (1985-12-01), Yamanashi et al.
patent: 4791869 (1988-12-01), Furukawa
patent: 5074208 (1991-12-01), Filsinger

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