US3742847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet turning mechanism for perfectors
Assignee: Sächsisches Institut für die Druckindustrie
•
Filing: 1970-11-27
•
Granted: 1973-07-03
•
Expires: 1990-11-27
Abstract
Abstract Mechanism for controlling sheet manipulators, including sheet guides, in a perfector press, when the press shall be switched from obverse-obverse to obverse-reverse printing, or vice versa. A first printing cylinder and an adjacent transfer cylinder of the press have linkages pivoted about the respective cylinder axes and swingable, relative to the cylinders, in coordinated and partly overlapping motions. The linkage of the first printing cylinder repositions a sheet guiding plate by crank, link and guide units. It also repositions the sheet gripping mechanism of the first cylinder and, with lost motion, that of the transfer cylinder. Exact positioning of all mechanisms are provided by detent and release means in the transfer cylinder.
Inventors
- 👤 H Zimmermann
- 👤 O Rudolph
- 👤 W Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:21
CPC Classifications
B; B41; B41F; B41F21/00; B41F21/10; B41F21/106; B41F21/108
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
161 words
A mechanism for switching a perfector press, of the type having a printing cylinder and an adjacent transfer cylinder, the cylinders having sheet grippers capable of being switched from obverse-obverse to obverse-reverse positions, comprising first means operatively associated with one of said cylinders for repositioning the grippers thereof from and to the obverse and reverse positions, second means operatively associated with the other of said cylinders for repositioning the grippers thereof from and to the obverse and reverse positions, means operatively associated with said first and second means for supporting said first and second means about the respective axes of the cylinders for swinging the same in coordinated and partly overlapping motions relative to the cylinders, a sheet guiding plate, means operatively associated with said plate for positioning said plate below and between the cylinders, said first means including means for connecting said plate and for repositioning the same to and from the obverse and reverse positions while repositioning the grippers.
Claim 2
Dependent Claim
161 words
A mechanism for switching a perfector press, of the type having a printing cylinder and an adjacent transfer cylinder, the cylinders having sheet grippers capable of being switched from obverse-obverse to obverse-reverse positions, comprising first means operatively associated with one of said cylinders for repositioning the grippers thereof from and to the obverse and reverse positions, second means operatively associated with the other of said cylinders for repositioning the grippers thereof from and to the obverse and reverse positions, means operatively associated with said first and second means for supporting said first and second means about the respective axes of the cylinders for swinging the same in coordinated and partly overlapping motions relative to the cylinders, a sheet guiding plate, means operatively associated with said plate for positioning said plate below and between the cylinders, said first means including means for connecting said plate and for repositioning the same to and from the obverse and reverse positions while repositioning the grippers.
Claim 3
Dependent Claim
40 words
A mechanism according to claim 1, wherein said guide plate connecting and repositioning means includes means for swingingly translating one part of the guide plate, and means are provided for translating another part of said plate in a straight line.
Claim 4
Dependent Claim
15 words
A mechanism according to claim 1 wherein said first and second means are rockable cams.
Claim 5
Dependent Claim
15 words
A mechanism according to claim 3 also including a lost-motion connection between the rockable cams.
Claim 6
Dependent Claim
36 words
A mechanism according to claim 1, wherein said guide plate connecting and repositioning means includes a link having one end translatable with said first means, and lever means on the other end controlled by said link.
Claim 7
Dependent Claim
22 words
A mechanism according to claim 5 wherein the lever means is a bell crank lever having one end pivoted to said plate.
Claim 8
Dependent Claim
44 words
A mechanism according to claim 1, wherein said first and second means include means rockable about the respective axes of said cylinders, a slide path structure forming part of one said first and second means, and a roller lever forming part of the other.
Claim 9
Dependent Claim
17 words
A mechanism according to claim 7 wherein the slide path structure forms part of said first means.
Claim 10
Dependent Claim
29 words
A mechanism according to claim 1 additionally including means interposed in one of the first and second means for releasably stopping the same in the obverse and reverse positions.
Claim 11
Dependent Claim
22 words
A mechanism according to claim 9, wherein said releasable stopping means includes a pair of stop assemblies swingable with said second means.
Claim 12
Dependent Claim
59 words
A mechanism according to claim 10, wherein said releasable stopping means includes a generally stationary device opposite said stop assemblies, a movable element in said device, and means for successively reciprocating and turning the movable element to successively manually release said first means for readjustment thereof, and then automatically limiting the movement of said first means for said readjustment.
References Cited (Backward Citations)
US272834A
Cited
CA855587A
Cited
US1941093A
Cited
US2070684A
Cited
US2571805A
Cited
US2625101A
Cited
US3047288A
Cited
US3196767A
Cited
US3537391A
Cited
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 |