US3750573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for attaching a printing foil or master to the cylinder of a printing machine
Assignee: Roto Werke GmbH
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Filing: 1972-09-12
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Granted: 1973-08-07
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Expires: 1992-09-12
Abstract
Abstract The present apparatus greatly facilitates the handling of the printing foil or sheet material of which a printing master is produced for use in printing machines such as office offset machines. The foil handling means include a first pair of rollers arranged inside a hollow foil cylinder for paying out a length of foil. First clamping means are provided for securing the leading edge of the foil to said cylinder. Second clamping means are provided for clamping down a portion of the foil which after severing becomes the trailing edge of the preceding master and the leading edge of the next following master. For this purpose the second clamping means are combined with severing means.
Inventors
- 👤 W Haeusler
- 👤 H Herok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:50
CPC Classifications
B; B41; B41L; B41L17/00; B41L17/08; B41L17/12; B41L29/00; B41L29/12; B41L29/14; B41L29/16
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
117 words
An apparatus for attaching a printing master made from sheet or foil material paid out from a supply roll to a cylinder of a printing machine and for ejecting said master after the printing run, comprising a hollow cylinder, means for rotatably supporting and driving said hollow cylinder in said apparatus, means for rotatably supporting said supply roll inside said hollow cylinder, means for paying out sheet material from said supply roll out of said hollow cylinder, means for clamping a length of sheet material at both ends thereof, severing means arranged for severing said length of sheet material from said supply roll, and means for ejecting the severed length of sheet material from said hollow cylinder.
Claim 2
Independent Claim
117 words
An apparatus for attaching a printing master made from sheet or foil material paid out from a supply roll to a cylinder of a printing machine and for ejecting said master after the printing run, comprising a hollow cylinder, means for rotatably supporting and driving said hollow cylinder in said apparatus, means for rotatably supporting said supply roll inside said hollow cylinder, means for paying out sheet material from said supply roll out of said hollow cylinder, means for clamping a length of sheet material at both ends thereof, severing means arranged for severing said length of sheet material from said supply roll, and means for ejecting the severed length of sheet material from said hollow cylinder.
Claim 3
Dependent Claim
84 words
The apparatus according to claim 1, wherein said means for paying out Sheet material comprise a pair of rollers, means for rotatably supporting said pair of rollers inside said hollow cylinder, means for positively driving said pair of rollers together with said hollow cylinder, said means for positively driving said pair of rollers comprising a gear wheel train, clutch means for coupling said gear wheel train to said hollow cylinder, and actuator means for engaging and disengaging said clutch means with said hollow cylinder.
Claim 4
Dependent Claim
37 words
The apparatus according to claim 1, wherein said clamping means comprise hold-down means, said severing means comprising a cutting blade, said apparatus further comprising means for coupling said hold-down means and said cutting blade to each other.
Claim 5
Dependent Claim
99 words
The apparatus according to claim 3, wherein said hold-down means comprise two hold-down bars arranged in parallel to each other and spaced from each other to provide a gap therebetween, and means for supporting said cutting blade for movement into said gap, whereby one of said hold-down bars secures a portion of the sheet material which after the severing becomes the trailing edge of said length of sheet material while the other of said hold-down bars secures a portion of the sheet material which after said severing becomes the leading edge of the next succeeding length of sheet material.
Claim 6
Dependent Claim
43 words
The apparatus according to claim 1, wherein said ejecting means comprise an ejecting rake, means for rotatably supporting said ejecting rake adjacent to said clamping and severing means and means for tilting said ejecting rake into and out of a sheet lifting position.
Claim 7
Dependent Claim
45 words
The apparatus according to claim 1, further comprising means for transporting said length of sheet material out of said hollow cylinder, said transporting means comprising a further pair of rollers and means for rotatably supporting said further pair of rollers outside of said hollow cylinder.
Claim 8
Dependent Claim
93 words
The apparatus according to claim 6, wherein said means for rotatably supporting said further pair of rollers comprises rocker arm means carrying at one end thereof one roller of said further pair of rollers, means for operating said rocker arm whereby said one roller may be tilted against the hollow cylinder, and means for positively driving said one roller of said further pair of rollers in the same direction of rotation as said hollow cylinder whereby said one roller and said hollow cylinder move in the same direction at the point of cooperation.
Claim 9
Dependent Claim
19 words
The apparatus according to claim 7, wherein said one roller comprises a felt cover on its outer cylindrical surface.
Claim 10
Dependent Claim
55 words
The apparatus according to claim 1, wherein said hollow cylinder comprises an interchangeable insert member, said insert member comprising means for supporting said supply roll, said means for paying out sheet material, said clamping and severing means, as well as said ejecting means, whereby these means just listed are exchangeable together with said insert member.
Claim 11
Dependent Claim
19 words
The apparatus according to claim 9, further comprising hinge means for hinging said insert member to said hollow cylinder.
Claim 12
Dependent Claim
19 words
The apparatus according to claim 1, further comprising cartridge means for inserting said supply roll into said hollow cylinder.
Claim 13
Dependent Claim
27 words
The apparatus according to claim 1, further comprising a segment shaped lid for said hollow cylinder for facilitating the insertion of said supply roll into said cylinder.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |