US3820779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet delivery apparatus
Assignee: Deritend Engineering Co Ltd
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Filing: 1972-04-24
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Granted: 1974-06-28
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Expires: 1992-04-24
Abstract
Abstract A feeder for cut blanks of card and the like, having parallel conveyor belts with suction applied to draw the blanks against the lower run of the belts, ejector strips between the belts to be moved down into engagement with the blanks to brake them frictionally, seals carried by the ejectors to close off suction to the blanks without interfering with the suction means, and a Geneva mechanism for slowing the belts in timed relation to the ejector movement, so that the blanks are slowed, stopped and ejected to form a stack below the belts.
Inventors
- 👤 T Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/02; B65H29/08; B65H29/26; B65H29/32; B65H29/68
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
A sheet-delivery apparatus for cut blanks, comprising a plurality of spaced parallel conveyor belts, means for driving the belts, means for placing the space above the belt runs under reduced pressure, ejector means, means for moving the ejector means downward between the belt runs to deliver blanks which have been held against the underside of the belt runs by the reduced pressure above, and a backing member extending longitudinally along the upper surface of each belt run, the backing members above adjacent belt runs being spaced apart, wherein the improvement comprises a sealing flap arranged above and extending the full length of the space between adjacent backing members, said flap being slidably mounted on the ejector means, and an abutment on the ejector means which lifts the flap when the ejector means is moved to an upper position, and permits the flap to seal the space between the backing members as the ejector means is moved toward a lower position.
Claim 2
Dependent Claim
160 words
A sheet-delivery apparatus for cut blanks, comprising a plurality of spaced parallel conveyor belts, means for driving the belts, means for placing the space above the belt runs under reduced pressure, ejector means, means for moving the ejector means downward between the belt runs to deliver blanks which have been held against the underside of the belt runs by the reduced pressure above, and a backing member extending longitudinally along the upper surface of each belt run, the backing members above adjacent belt runs being spaced apart, wherein the improvement comprises a sealing flap arranged above and extending the full length of the space between adjacent backing members, said flap being slidably mounted on the ejector means, and an abutment on the ejector means which lifts the flap when the ejector means is moved to an upper position, and permits the flap to seal the space between the backing members as the ejector means is moved toward a lower position.
Claim 3
Dependent Claim
64 words
A sheet delivery apparatus according to claim 1 wherein the means for driving the belts includes speed-control means for reducing the speed of movement of the belts in synchronism with the operation of the means for moving the ejector means, to cause the cut blank to be transferred from the belt runs to the ejector means without disarranging the cut portions of the blank.
Claim 4
Dependent Claim
40 words
Apparatus according to claim 2 wherein the means for moving the ejector means is coupled to the belt-driving means and is synchronised with said speed-control means so that the ejector means engages the blank as the belt speed approaches zero.
Claim 5
Dependent Claim
38 words
Apparatus according to claim 3 wherein the ejector means includes elongate blank-engaging portions having blank engaging faces and means for maintaining said faces parallel to the lower runs of the belts as the ejector means is extended therethrough.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |