US3772990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet handling apparatus for a printing press
Assignee: MILLER PRINTING EQUIPMENT Corp A CORP OF DE
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Filing: 1972-03-23
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Granted: 1973-11-20
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Expires: 1992-03-23
Abstract
Abstract Gripper devices, positioned on a transfer cylinder are arranged to release the sheet front edge either as the sheet front edge is tangent with the adjacent perfecting cylinder for printing on the same side of the sheet or when the sheet trailing edge is tangent to the perfecting cylinder for reversing the sheet and printing on both sides of the sheet. The gripper devices are opened by a cam mounted on a semicircular cam adjusting gear segment, and the gear segment is, in turn, mounted coaxially with the transfer cylinder shaft. A second gear meshes with the cam adjusting gear segment and is supported on a cam adjusting shaft journaled in the press frame. Rotation of the cam adjusting shaft rotates the cam adjusting gear segment and the cam mounted thereon relative to the axis of the transfer cylinder to change the location at which the grippers on the transfer cylinder open to release the front edge of the sheet. A locking gear segment is pivotally connected to the press side frame and is moved into meshing relation with the cam adjusting gear segment by an eccentric locking shaft to maintain the cam adjusting gear segment in a preselected angular position relative to the axis of the transfer cylinder.
Inventors
- 👤 W Weisgerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:12
CPC Classifications
B; B41; B41F; B41F21/00; B41F21/10; B41F21/106
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
328 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit comprising, a first cylinder having gripper means for engaging the leading edge of a sheet, a second cylinder positioned adjacent to said first cylinder, said second cylinder having engaging means to receive the leading edge of the sheet for printing on the obverse side of the sheet in the second printing unit and the trailing edge of the sheet for printing on the reverse side of the sheet in the second printing unit, operating means on said first cylinder to open said gripper means, actuating means for said operating means mounted adjacent to said first cylinder, said actuating means including a cam member support mounted coaxially to said first cylinder and a cam member mounted on said cam member support, said cam member support having an annular ring member mounted coaxially relative to said first cylinder, a press frame member rotatably supporting said first cylinder, said ring member rotatably supported on said frame member, said cam member support rotatable about the axis of said first cylinder to position said cam member at a preselected angular location to said first cylinder, said cam member operable to periodically contact said operating means to open said gripper means at a predetermined location during each revolution of said first cylinder, and control means including means to rotate said ring member about the axis of said first cylinder to thereby adjust the position of said actuating means to control the location at which said operating means contacts said actuating means to open said gripper means and release the leading edge of said sheet when either the leading edge of the sheet or the trailing edge of the sheet is tangent with said first and second cylinder to thereby deliver either the leading edge of the sheet or the trailing edge of the sheet from said first cylinder to said engaging means on said second cylinder.
Claim 2
Dependent Claim
328 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit comprising, a first cylinder having gripper means for engaging the leading edge of a sheet, a second cylinder positioned adjacent to said first cylinder, said second cylinder having engaging means to receive the leading edge of the sheet for printing on the obverse side of the sheet in the second printing unit and the trailing edge of the sheet for printing on the reverse side of the sheet in the second printing unit, operating means on said first cylinder to open said gripper means, actuating means for said operating means mounted adjacent to said first cylinder, said actuating means including a cam member support mounted coaxially to said first cylinder and a cam member mounted on said cam member support, said cam member support having an annular ring member mounted coaxially relative to said first cylinder, a press frame member rotatably supporting said first cylinder, said ring member rotatably supported on said frame member, said cam member support rotatable about the axis of said first cylinder to position said cam member at a preselected angular location to said first cylinder, said cam member operable to periodically contact said operating means to open said gripper means at a predetermined location during each revolution of said first cylinder, and control means including means to rotate said ring member about the axis of said first cylinder to thereby adjust the position of said actuating means to control the location at which said operating means contacts said actuating means to open said gripper means and release the leading edge of said sheet when either the leading edge of the sheet or the trailing edge of the sheet is tangent with said first and second cylinder to thereby deliver either the leading edge of the sheet or the trailing edge of the sheet from said first cylinder to said engaging means on said second cylinder.
Claim 3
Dependent Claim
45 words
Sheet handling apparatus for a sheet fed press having a fIrst printing unit and a second printing unit as set forth in claim 1 which includes, locking means to lock said actuating means at a preselected angle relative to the axis of said first cylinder.
Claim 4
Dependent Claim
122 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit as set forth in claim 2 which includes, a press frame member rotatably supporting said first cylinder, said actuating means including an arcuate gear segment mounted coaxially with said first cylinder and rotatably supported on said frame member, said cam member mounted on said arcuate gear segment, said cam member arranged to contact said operating means and open said gripper means upon rotation of said first cylinder, said control means including gear means meshing with said arcuate gear segment, said gear means operable upon rotation to revolve said arcuate gear segment and said cam member mounted thereon about the axis of said first cylinder.
Claim 5
Dependent Claim
94 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit as set forth in claim 3 in which said locking means includes, a locking plate having a gear end surface thereon, means pivotally connecting said locking plate to said frame member, and means to pivot said locking plate on said frame member to move said locking plate gear end surface into meshing relation with said arcuate gear segment and lock said arcuate gear segment at a preselected angle relative to the axis of said first cylinder.
Claim 6
Dependent Claim
83 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit as set forth in claim 3 in which said control means includes, an adjusting shaft member rotatably mounted in said frame member and extending outwardly therefrom, said gear means secured to said adjusting shaft member so that said gear means rotates upon rotation of said adjusting shaft member and thereby revolves said arcuate gear segment and cam member about the axis of said first cylinder.
Claim 7
Dependent Claim
114 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit as set forth in claim 4 in which said locking means includes, a locking shaft member rotatably mounted in said frame member, said locking shaft member having an eccentric end portion, said locking plate having an elliptical bore therein, said locking shaft member eccentric end portion positioned in said locking plate elliptical bore, said locking shaft member arranged upon rotation to pivot said locking plate gear portion into and out of meshing relation with said arcuate gear segment, and resilient means to urge said locking plate gear portion into meshing relation with said arcuate gear segment.
Claim 8
Dependent Claim
202 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit as set forth in claim 4 which includes, a tubular locking shaft member rotatably mounted in one of said frame members and extending outwardly therefrom, said tubular locking shaft member having an eccentric end portion, said locking plate having an elliptical bore therein, said tubular locking shaft member eccentric end portion positioned in said locking shaft elliptical bore, said tubular locking shaft member arranged upon rotation to pivot said locking plate gear portion into and out of meshing relation with said arcuate gear segment, resilient means to urge said locking plate gear portion into meshing relation with said arcuate gear segment, a adjusting shaft member positioned in said tubular locking shaft member in coaxial relation therewith, said adjusting shaft member rotatably mounted in said tubular locking shaft member and having an end portion extending beyond said tubular locking shaft member eccentric portion, and said gear means secured to said adjusting shaft member end portion so that said gear means rotates upon rotation of said adjusting shaft member and thereby revolves said arCuate gear segment and cam member about the axis of said first cylinder.
Claim 9
Dependent Claim
92 words
Sheet handling apparatus for a sheet fed press having a first printing unit and a second printing unit as set forth in claim 3 which includes, a cam member support ring coaxially mounted relative to said first cylinder, said support ring rotatably supported on one of said frame members, said arcuate gear segment is secured to said support ring and extends radially therefrom, and said cam member mounted on said gear segment, said cam member arranged to contact said operating means and open said gripper means upon rotation of said first cylinder.
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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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |