Double-feed prevention device in paper feeding apparatus
First Claim
1. A double-feed prevention device to feed single sheets of paper from a stack of paper sheets placed on a paper feeding plate including a paper feeding roller in opposition to a paper separating means provided at an end of a resiliently biased swingable lever means arranged to move the paper separating means against the paper feeding roller and being adapted for pivotal movement in a substantially vertical plane, comprising a locking means secured by guiding means to a stationary supporting means, said locking means being adapted to slideably move parallel to said swingable lever means plane of movement, said locking means having a part thereof to be engaged with a part of the swingable lever means to prevent the paper separating means from moving away from the paper feeding roller, said locking means being biased to slide in a direction such that said locking means part is urged into engagement with said swingable lever means part and moves in response to movement of said swingable lever means part.
1 Assignment
0 Petitions
Accused Products
Abstract
A double-feed prevention device in paper feeding apparatus is provided with a paper feeding roller and a frictional member carried on a paper separating plate mounted on an end of a spring-biased swingable lever. Paper sheets are separated one by one at a gap having a predetermined dimension between the paper feeding roller and the frictional member. A part of the swingable lever is always engaged by a locking member so as to prevent separation of said frictional member from said paper feeding roller by wear off in a surface of said paper feeding roller. The double-feed prevention device according to the present invention is further provided with releasing means for disengaging between the locking member and the swingable lever to remove jammed paper from the gap as desired.
-
Citations
9 Claims
- 1. A double-feed prevention device to feed single sheets of paper from a stack of paper sheets placed on a paper feeding plate including a paper feeding roller in opposition to a paper separating means provided at an end of a resiliently biased swingable lever means arranged to move the paper separating means against the paper feeding roller and being adapted for pivotal movement in a substantially vertical plane, comprising a locking means secured by guiding means to a stationary supporting means, said locking means being adapted to slideably move parallel to said swingable lever means plane of movement, said locking means having a part thereof to be engaged with a part of the swingable lever means to prevent the paper separating means from moving away from the paper feeding roller, said locking means being biased to slide in a direction such that said locking means part is urged into engagement with said swingable lever means part and moves in response to movement of said swingable lever means part.
Specification