Patent US3829084A successfully refreshed from Google Patents.
US3829084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable transfer gripper cylinder
Assignee: Adamovske Strojirny AS
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Filing: 1972-07-10
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Granted: 1974-08-13
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Expires: 1992-07-10
Abstract
Abstract Adjustment mechanism for properly gripping paper sheets of different lengths to be transferred for multicolor printing including adjusting means for adjusting the circumferential spacing of cylinder gripping means, particularly on rotary printing machines. On one end of a shaft of a sheet transfer cylinder there is rotatably mounted a gear wheel and on one end of a shaft of a cylinder for turning papers sheets is a first drive gear and a second drive gear which is adjustable relatively to the first drive gear. One drive gear of the turning cylinder is engageable with the drive gear of the sheet transfer cylinder, so that changing of the rotational orientation between the drive gears of the sheet turning cylinder effects a rotation of the gear wheel of the sheet transfer cylinder and a change in the circumferential spacing between the mechanical grippers and the suction gripping elements thereof.
Inventors
- 👤 J Jurny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:14
CPC Classifications
B; B41; B41F; B41F21/00; B41F21/10; B41F21/102
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
271 words
A device for adjusting the circumferential spacing of cylinder gripper means and for properly gripping sheets of different lengths carried by the sheet transfer cylinder of a multicolor printing machine including adjustable means for adjusting the circumferential spacing of the cylinder gripper means comprising a sheet transfer cylinder having first and second sections angularly adjustable with respect to each other, suction means mounted on said first section and mechanical gripping means for grasping the edge of said sheets mounted on said second section, said suction means being manually adjustable circumferentially relative to said mechanical gripping means for properly gripping sheets of different lengths, an associated sheet turning cylinder having means for gripping said sheet so transferred, a drive shaft for said sheet transfer cylinder rigidly connected to said second section and carrying a drive gear adjacent the outer end thereof and a rotatable gear wheel spaced therefrom and rigidly connected to said first section, said sheet turning cylinder having a drive shaft carrying a first drive gear and a second drive gear adapted to engage with the rotatable gear wheel of said sheet transfer cylinder, said first drive gear being spaced axially from said second gear and adapted to be rotatably adjustable relative to said second drive gear, said first drive gear being engageable with the drive gear of the sheet transfer cylinder, whereby changing of the rotational orientation between the first and second drive gears of said sheet turning cylinder effects a rotation of the rotatable gear wheel of said sheet transfer cylinder and a change in the circumferential spacing between the mechanical grippers and the suction gripping elements thereof.
Claim 2
Independent Claim
271 words
A device for adjusting the circumferential spacing of cylinder gripper means and for properly gripping sheets of different lengths carried by the sheet transfer cylinder of a multicolor printing machine including adjustable means for adjusting the circumferential spacing of the cylinder gripper means comprising a sheet transfer cylinder having first and second sections angularly adjustable with respect to each other, suction means mounted on said first section and mechanical gripping means for grasping the edge of said sheets mounted on said second section, said suction means being manually adjustable circumferentially relative to said mechanical gripping means for properly gripping sheets of different lengths, an associated sheet turning cylinder having means for gripping said sheet so transferred, a drive shaft for said sheet transfer cylinder rigidly connected to said second section and carrying a drive gear adjacent the outer end thereof and a rotatable gear wheel spaced therefrom and rigidly connected to said first section, said sheet turning cylinder having a drive shaft carrying a first drive gear and a second drive gear adapted to engage with the rotatable gear wheel of said sheet transfer cylinder, said first drive gear being spaced axially from said second gear and adapted to be rotatably adjustable relative to said second drive gear, said first drive gear being engageable with the drive gear of the sheet transfer cylinder, whereby changing of the rotational orientation between the first and second drive gears of said sheet turning cylinder effects a rotation of the rotatable gear wheel of said sheet transfer cylinder and a change in the circumferential spacing between the mechanical grippers and the suction gripping elements thereof.
Claim 3
Dependent Claim
98 words
The device according to claim 1 wherein the second section of the transfer cylinder also includes as a portion thereof end disc means rigidly connected to the drive gear, grippers mounted on said end disc means for said sheet transfer cylinder, the first section of the transfer cylinder including as a portion thereof supporting segment means, said supporting segment means being rigidly connected to said gear wheel and suction elements mounted on said segments of said sheet transfer cylinder, said suction elements and grippers being spaced a predetermined circumferential distance about the periphery of said sheet transfer cylinder.
Claim 4
Dependent Claim
80 words
The device according to claim 2, wherein a pair of said end discs are provided and the outer said discs is rigidly connected to said drive gear, a plurality of said supporting segments being provided and the outer of said segments being rigidly connected to said gear wheel, said discs carrying a shaft upon which the grippers of said sheet transfer cylinder are mounted, a tube connecting said supporting segments and mounting the suction elements of said sheet transfer cylinder.
Claim 5
Dependent Claim
79 words
The device according to claim 1, wherein said first drive gear of said sheet turning cylinder is detachably mounted upon a third gear carried by the drive shaft thereof, pinion means being provided in said first drive gear engageable with said third bear, whereby upon detachment of said first drive gear from said third gear rotation of said pinion means effects a rotation of said third gear and of said drive shaft and the second drive gear carried thereby.
Claim 6
Dependent Claim
24 words
The device according to claim 4, wherein said first drive gear and said third gear are adjustably connected by means of a thrust disc.
Claim 7
Dependent Claim
45 words
The device according to claim 4, wherein a pointer and scale are mounted cooperatively upon said first drive gear and third gear and are adapted to provide an indication of the rotationaL orientation between the first and second drive gears of said sheet turning cylinder.
Claim 8
Dependent Claim
22 words
The device according to claim 1, wherein the grippers of said sheet turning cylinder are carried by a shaft mounted peripherally thereon.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |