Patent US3572691A successfully refreshed from Google Patents.
US3572691A
Expired / Lapsed
US
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Mechanism for withdrawing individual sheets of paper from a stack
Assignee: Canadian Stackpole Ltd
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Filing: 1968-10-28
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Granted: 1971-03-30
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Expires: 1988-10-28
Abstract
Abstract Mechanism for delivering a sheet from a magazine comprising a resiliently displaceable finger carried on a roller which wipes one edge of the foremost sheet from behind an edge of the magazine to drop into a recess in the roller behind the finger, and a second roller to cooperate with the first roller to grip the sheet edge and pull the sheet from the magazine.
Inventors
- 👤 Gustav Heinricy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:55
CPC Classifications
B; B65; B65B; B65B41/00; B65B41/02; B65B41/10; B65B43/00; B65B43/12; B65B43/14; B65B43/22; B65C; B65C9/00; B65C9/08; B65C9/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
197 words
A mechanism for withdrawing at high speed individual sheets of resilient paper from a stack located in a magazine having a discharge opening limited by first and second opposed side edges which, to contain the sheets are spaced a distance apart less than the maximum dimension of the sheets at right angles to said edges, said magazine having pressure means bearing said stack against said first and second opposed side edges comprising a driven discharge roller, a finger projecting outwardly of said roller and rotating therewith and so disposed that, on a revolution of the discharge roller, the finger enters said discharge opening to frictionally contact a sheet and to release it from containment from said first side edge, said finger, on further rotation, first flexing the released portion of said sheet into substantially U-form and then releasing said flexed sheet portion whereby the latter. due to its inherent resiliency, recovers into the recess behind said finger and a counter roller, spaced from said discharge opening, adapted to cooperate with the discharge roller periphery located behind said finger to grip said released portion and complete the withdrawal of the sheet by disengagement from said second side edge.
Claim 2
Dependent Claim
197 words
A mechanism for withdrawing at high speed individual sheets of resilient paper from a stack located in a magazine having a discharge opening limited by first and second opposed side edges which, to contain the sheets are spaced a distance apart less than the maximum dimension of the sheets at right angles to said edges, said magazine having pressure means bearing said stack against said first and second opposed side edges comprising a driven discharge roller, a finger projecting outwardly of said roller and rotating therewith and so disposed that, on a revolution of the discharge roller, the finger enters said discharge opening to frictionally contact a sheet and to release it from containment from said first side edge, said finger, on further rotation, first flexing the released portion of said sheet into substantially U-form and then releasing said flexed sheet portion whereby the latter. due to its inherent resiliency, recovers into the recess behind said finger and a counter roller, spaced from said discharge opening, adapted to cooperate with the discharge roller periphery located behind said finger to grip said released portion and complete the withdrawal of the sheet by disengagement from said second side edge.
Claim 3
Dependent Claim
14 words
A mechanism according to claim 1 wherein said recess extends into said driven roller.
Claim 4
Dependent Claim
45 words
A mechanism according to claim 2 wherein said recess in said driven roller forms an edge with said roller periphery, said edge being spaced from and behind said finger, said edge on revolution of said roller, guiding said recovered sheet portion towards said counter roller.
Claim 5
Dependent Claim
17 words
A mechanism as claimed in claim 1 in which spring means are provided to support said finger.
Claim 6
Dependent Claim
18 words
A mechanism as claimed in claim 1 in which said finger is fixedly mounted on said discharge roller.
Claim 7
Dependent Claim
20 words
A mechanism as claimed in claim 1 characterized in that the second side edge has a projecting, outwardly curved section.
Claim 8
Dependent Claim
22 words
A mechanism as claimed in claim 1 characterized in that a freely rotatable guide roller is provided opposite said second side edge.
Claim 9
Dependent Claim
20 words
A mechanism as claimed in claim 1 characterized in that the surface of the finger consists of a frictional material.
Claim 10
Dependent Claim
26 words
A mechanism as claimed in claim 1 characterized in that at least a part of the surface of the counter roller consists of a frictional material.
Claim 11
Dependent Claim
23 words
A mechanism as claimed in claim 1 wherein said finger is resiliently displaceable in a plane at right angles to said discharge roller.
Claim 12
Dependent Claim
20 words
A mechanism as claimed in claim 10 wherein said resilient displacement is effected by making said finger of resilient material.
Claim 13
Dependent Claim
19 words
A mechanism as claimed in Claim 1 wherein said driven discharge roller is on a fixed axis during rotation.
Claim 14
Dependent Claim
193 words
A mechanism for withdrawing at high speed individual labels from a stack located in a magazine having a discharge opening limited by first and second opposed side edges spaced a distance apart less than the maximum dimension of the labels at right angles to said side edges to contain said labels comprising means adapted to advance said stack of labels in said magazine and bear said stack against said first and second opposed side edges, a driven discharge roller, a finger projecting outwardly of said roller, rotating therewith and so disposed that on a revolution of the discharge roller the finger enters said discharge opening to frictionally contact a label and release it from containment from said first side edge, said finger, on further rotation, first flexing the released portion of said label into substantially U-form and then releasing said flexed label portion whereby the latter recovers into the recess behind said finger and a counter roller spaced from said discharge opening adapted to cooperate with the discharge roller periphery located behind said finger, to grip said released portion and complete the withdrawal of the label by disengagement from said second side edge.
Claim 15
Dependent Claim
193 words
A mechanism for withdrawing at high speed individual labels from a stack located in a magazine having a discharge opening limited by first and second opposed side edges spaced a distance apart less than the maximum dimension of the labels at right angles to said side edges to contain said labels comprising means adapted to advance said stack of labels in said magazine and bear said stack against said first and second opposed side edges, a driven discharge roller, a finger projecting outwardly of said roller, rotating therewith and so disposed that on a revolution of the discharge roller the finger enters said discharge opening to frictionally contact a label and release it from containment from said first side edge, said finger, on further rotation, first flexing the released portion of said label into substantially U-form and then releasing said flexed label portion whereby the latter recovers into the recess behind said finger and a counter roller spaced from said discharge opening adapted to cooperate with the discharge roller periphery located behind said finger, to grip said released portion and complete the withdrawal of the label by disengagement from said second side edge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |