EP 0157343 A3 19870506 - SHEET FEEDER FOR PAPER-PROCESSING MACHINES INCLUDING A SEPARATING DEVICE ADJUSTABLE TO DIFFERENT SHEET THICKNESSES
Title (en)
SHEET FEEDER FOR PAPER-PROCESSING MACHINES INCLUDING A SEPARATING DEVICE ADJUSTABLE TO DIFFERENT SHEET THICKNESSES
Publication
Application
Priority
DE 3412574 A 19840404
Abstract (en)
[origin: US4603848A] A sheet separator for a sheet feeder comprises a friction cylinder which is rotatable for feeding a sheet from a stack of sheets. A retaining member is mounted for radial movement with respect to the friction cylinder. The retaining member has a friction surface which holds back other sheets in the stack and which forms with the friction cylinder a passage gap which is adjusted to the thickness of a sheet to be fed. A carrier is connected to and supports the retaining member. An adjustment mechanism is provided between the carrier and the retaining member for adjusting the passage gap width. A bracket is mounted for radial movement on the carrier and has a contact surface for engaging the friction cylinder or a sheet held in the passage gap. Signal switch is provided in the bracket and is activated by a checking element which is movably mounted to the bracket and engaged with either the carrier or the retaining member. The switch changes state when a selected relative position is established between the retaining member and the contact surface of the bracket. A circuit is connected to the switch for indicating its change in state. The selected position is chosen for establishing the correct passage gap for a sheet of paper to be fed.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B65H 3/5238 (2013.01 - EP US); B65H 7/12 (2013.01 - EP US); B65H 2511/224 (2013.01 - EP US)
Citation (search report)
[A] DE 3112418 A1 19821007 - TMF SCHWENNINGEN GMBH E HALLER [DE]
Designated contracting state (EPC)
AT BE CH FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0157343 A2 19851009; EP 0157343 A3 19870506; DE 3412574 C1 19851010; JP S60228340 A 19851113; US 4603848 A 19860805
DOCDB simple family (application)
EP 85103585 A 19850326; DE 3412574 A 19840404; JP 7014785 A 19850404; US 71788185 A 19850329