Patent US3743277A successfully refreshed from Google Patents.
US3743277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet-feeding device for printing machines
Assignee: Schnellpressenfabrik Koenig and Bauer AG
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Filing: 1971-09-15
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Granted: 1973-07-03
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Expires: 1991-09-15
Abstract
Abstract The invention relates to feeding and registering sheets to printing machines. Instead of a side lay there is arranged a measuring head, measuring the side position of the incoming sheet which is shifted away from the side lay line according to the difference of a measured value and a target value. The sheet can be shifted by a suction pulling bar or a stop drum or an intermediate drum respectively.
Inventors
- 👤 Schunemann H Bolza
- 👤 K Wolfram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:10
CPC Classifications
B; B65; B65H; B65H9/00; B65H9/20; B65H9/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
196 words
An apparatus for feeding and registering sheets to printing machines, the improvement comprising a measuring head means positioned in the usual position of a side lay, said sheets overlapping in the sheet feeding stream, said measuring head means being adapted to sense the side edge position of each sheet in the sheet feeding stream with respect to an established reference position and deliver a corresponding electric value, means for moving said sheet in a generally transverse direction to said sheet feeding stream in a direction away from the measuring head and to a predetermined side registered position, control means for said sheet transverse moving means, said control meAns being responsive to said delivered electric value and causing the required movement of said transverse sheet moving means whereby the sheet is moved to the predetermined side registered position uncovering the side edge of the next succeeding sheet for its position measuring even though the trailing edge of the first mentioned sheet has not yet passed downstream of a line extending transversely of the sheet feeding stream at said measuring head means and each sheet is fed in correct position to the impression cylinder of said printing machine.
Claim 2
Independent Claim
196 words
An apparatus for feeding and registering sheets to printing machines, the improvement comprising a measuring head means positioned in the usual position of a side lay, said sheets overlapping in the sheet feeding stream, said measuring head means being adapted to sense the side edge position of each sheet in the sheet feeding stream with respect to an established reference position and deliver a corresponding electric value, means for moving said sheet in a generally transverse direction to said sheet feeding stream in a direction away from the measuring head and to a predetermined side registered position, control means for said sheet transverse moving means, said control meAns being responsive to said delivered electric value and causing the required movement of said transverse sheet moving means whereby the sheet is moved to the predetermined side registered position uncovering the side edge of the next succeeding sheet for its position measuring even though the trailing edge of the first mentioned sheet has not yet passed downstream of a line extending transversely of the sheet feeding stream at said measuring head means and each sheet is fed in correct position to the impression cylinder of said printing machine.
Claim 3
Dependent Claim
47 words
Apparatus according to claim 1 including front lays for receiving each sheet and wherein said means for moving said sheet in a generally transverse direction to said sheet feeding stream is a suction pulling bar positioned to move each sheet while it is at said front lays.
Claim 4
Dependent Claim
64 words
Apparatus according to claim 2 wherein said measuring head means and said control means for said sheet transverse moving means includes an adjusting wedge means acting on said suction pulling bar and which is dislocated according to the measured values of the measuring head which limits the transverse motion of said suction pulling bar in a generally transverse direction to said sheet feeding stream.
Claim 5
Dependent Claim
55 words
Apparatus according to claim 2 wherein said control means for said sheet transverse moving means includes an electric intermediate circuit means which receives said electric value and is adapted to compute as an electric control value a difference between a desired target value for sheet positioning and said electric value delivered by said sensing means.
Claim 6
Dependent Claim
31 words
Apparatus accordig to claim 4 wherein the measuring head includes and measures the side position of the incoming sheet by a light source and a photo cell through a light window.
Claim 7
Dependent Claim
35 words
Apparatus according to claim 1 wherein said means for moving said sheet in a generally transverse direction to said sheet feeding stream is a stop drum positioned adjacent front stop lays provided in said apparatus.
Claim 8
Dependent Claim
62 words
Apparatus according to claim 6 wherein said measuring head means and said control means for said sheet transverse moving means includes an adjusting wedge means acting on said stop drum and which is dislocated according to the measured values of the measuring head which limits the transverse motion of said stop drum in a generally transverse direction to said sheet feeding stream.
Claim 9
Dependent Claim
55 words
Apparatus according to claim 6 wherein said control means for said sheet transverse moving means includes an electric intermediate circuit means which receives said electric value and is adapted to compute as an electric control value a difference between a desired target value for sheet positioning and said electric value delivered by said sensing means.
Claim 10
Dependent Claim
31 words
Apparatus according to claim 8 wherein the measuring head includes and measures the side position of the incoming sheet by a light source and a photo cell through a light window.
Claim 11
Dependent Claim
35 words
Apparatus according to claim 1 wherein said means for moving said sheet in a generally transverse direction to said sheet feeding stream is an intermediate drum positioned adjacent an impression cylinder of the printing machine.
Claim 12
Dependent Claim
62 words
Apparatus according to claim 10 wherein measuring head means and said said control means for said sheet transverse moving means includes an adjusting wedge means acting on said intermediate drum and which is dislocated according to the measured values of the measuring head which limits the transverse motion of said intermediate drum in a generally transverse direction to said sheet feeding stream.
Claim 13
Dependent Claim
31 words
Apparatus according to claim 1 wherein the measuring head includes and measures the side position of the incoming sheet by a light source and a photo cell through a light window.
Claim 14
Dependent Claim
55 words
Apparatus according to claim 1 wherein said control means for said sheet transverse moving means includes an electric intermediate circuit means which receives said electric value and is adapted to compute as an electric control value a difference between a deSired target value for sheet positioning and said electric value delivered by said sensing means.
Claim 15
Dependent Claim
31 words
Apparatus according to claim 13 wherein the measuring head includes and measures the side position of the incoming sheet by a light source and a photo cell through a light window.
Claim 16
Dependent Claim
54 words
Apparatus according to claim 1 wherein said control means for said sheet transverse moving means includes an adjusting wedge means which is dislocated according to the measured values of the measuring head which limits the transverse motion of said means for moving said sheet in a generally transverse direction to said sheet feeding stream.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |