US3719357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic power feeder
Assignee: S&S Corrugated Paper Machinery Co Inc
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Filing: 1971-03-04
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Granted: 1973-03-06
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Expires: 1991-03-04
Abstract
Abstract An automatic sheet feeder is provided with a relatively slow speed suction wheel that engages the top of a stack of sheets supported by a rising elevator. Sheets removed horizontally from the stack by the wheel are delivered to high speed conveyor rolls which deposit the sheets in a shingled arrangement on a relatively narrow slow speed suction conveyor of adjustable length. Power means acting from below is used to adjust the suction conveyor to a height compatible with the height of the stack in the hopper receiving sheets from the feeder, and is also used to raise the conveyor which permits the hopper to be retracted for servicing the converting apparatus associated with the hopper.
Inventors
- 👤 A Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:32
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/24; B65H29/241; B65H29/243; B65H29/50; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4212; B65H2701/00; B65H2701/10; B65H2701/17; B65H2701/176; B65H2701/1762
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
223 words
Apparatus for transferring sheets from a stack to a hopper said apparatus including an elevator for receiving and raising a stack of sheets, a continuous moving loop belt conveyor means extending forward of said elevator at the top thereof, transfer means positioned at the top of said elevator in operative position to remove sheets one at a time from the top of a stack being raised by said elevator and deposit these sheets on an upper flight of said conveyor means in shingled fashion, a plurality of rolls guiding movement of said upper flight and other sections of said conveyor means, said plurality of rolls including first and second rolls at opposite ends of said upper flight and other rolls engaging belt portions of said conveyor means positioned below said upper flight, said conveyor means also including a portion for generating a sheet holding suction applied through said upper flight from below, said portion of said conveyor means including an adjustable length elongated suction chamber means comprising a first chamber section and a second chamber section longitudinally movable relative to said first chamber section, said first roll and a first of said other rolls being connected to said second chamber section for movement together therewith whereby the length of said upper flight is adjusted as the length of said chamber means is adjusted.
Claim 2
Dependent Claim
223 words
Apparatus for transferring sheets from a stack to a hopper said apparatus including an elevator for receiving and raising a stack of sheets, a continuous moving loop belt conveyor means extending forward of said elevator at the top thereof, transfer means positioned at the top of said elevator in operative position to remove sheets one at a time from the top of a stack being raised by said elevator and deposit these sheets on an upper flight of said conveyor means in shingled fashion, a plurality of rolls guiding movement of said upper flight and other sections of said conveyor means, said plurality of rolls including first and second rolls at opposite ends of said upper flight and other rolls engaging belt portions of said conveyor means positioned below said upper flight, said conveyor means also including a portion for generating a sheet holding suction applied through said upper flight from below, said portion of said conveyor means including an adjustable length elongated suction chamber means comprising a first chamber section and a second chamber section longitudinally movable relative to said first chamber section, said first roll and a first of said other rolls being connected to said second chamber section for movement together therewith whereby the length of said upper flight is adjusted as the length of said chamber means is adjusted.
Claim 3
Dependent Claim
223 words
Apparatus for transferring sheets from a stack to a hopper said apparatus including an elevator for receiving and raising a stack of sheets, a continuous moving loop belt conveyor means extending forward of said elevator at the top thereof, transfer means positioned at the top of said elevator in operative position to remove sheets one at a time from the top of a stack being raised by said elevator and deposit these sheets on an upper flight of said conveyor means in shingled fashion, a plurality of rolls guiding movement of said upper flight and other sections of said conveyor means, said plurality of rolls including first and second rolls at opposite ends of said upper flight and other rolls engaging belt portions of said conveyor means positioned below said upper flight, said conveyor means also including a portion for generating a sheet holding suction applied through said upper flight from below, said portion of said conveyor means including an adjustable length elongated suction chamber means comprising a first chamber section and a second chamber section longitudinally movable relative to said first chamber section, said first roll and a first of said other rolls being connected to said second chamber section for movement together therewith whereby the length of said upper flight is adjusted as the length of said chamber means is adjusted.
Claim 4
Dependent Claim
223 words
Apparatus for transferring sheets from a stack to a hopper said apparatus including an elevator for receiving and raising a stack of sheets, a continuous moving loop belt conveyor means extending forward of said elevator at the top thereof, transfer means positioned at the top of said elevator in operative position to remove sheets one at a time from the top of a stack being raised by said elevator and deposit these sheets on an upper flight of said conveyor means in shingled fashion, a plurality of rolls guiding movement of said upper flight and other sections of said conveyor means, said plurality of rolls including first and second rolls at opposite ends of said upper flight and other rolls engaging belt portions of said conveyor means positioned below said upper flight, said conveyor means also including a portion for generating a sheet holding suction applied through said upper flight from below, said portion of said conveyor means including an adjustable length elongated suction chamber means comprising a first chamber section and a second chamber section longitudinally movable relative to said first chamber section, said first roll and a first of said other rolls being connected to said second chamber section for movement together therewith whereby the length of said upper flight is adjusted as the length of said chamber means is adjusted.
Claim 5
Dependent Claim
18 words
Apparatus as set forth in claim 1, in which said transfer means includes a sheet holding suction means.
Claim 6
Dependent Claim
54 words
Apparatus as set forth In claim 2, in which the transfer means includes a feed wheel rotatably driven on a horizontal axis, said suction means for the transfer means applying suction at the interior of said wheel to generate a holding force acting through aperture means at the lower region of the wheel''s periphery.
Claim 7
Dependent Claim
26 words
Apparatus as set forth in claim 1, also including height adjusting means for setting the vertical position of said conveyor means at the forward end thereof.
Claim 8
Dependent Claim
26 words
Apparatus as set forth in claim 3, in which the height adjusting means is below the conveyor means and engages the latter below said upper flight.
Claim 9
Dependent Claim
50 words
Apparatus as set forth in claim 1, in which the transfer means includes a feed wheel driven on a horizontal axis and the suction means applies suction at the interior of said wheel to generate a holding force acting through aperture means at the lower region of the wheel''s periphery.
Claim 10
Dependent Claim
43 words
Apparatus as set forth in claim 6, in which the transfer means also includes delivery roller means interposed between the feed wheel and the conveyor means, said delivery roller means conveying sheets much faster than either the feed wheel or the conveyor means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |