US3896724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the adjustment of a form cylinder
Assignee: Adamovske Strojirny AS
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Filing: 1974-01-28
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Granted: 1975-07-29
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Expires: 1994-01-28
Abstract
Abstract In a multicolor offset printing machine, apparatus for circumferentially adjusting the form or perfecting cylinder for register printing, there is provided two pair of intermeshing gears. The first pair includes two helical gears coaxially arranged and axially shiftable relative to each other. One of these first gears carries a third gear engaging a pinion whose supporting rod is secured to the perfecting cylinder. The second pair of gears is jointly mounted to be rotatable about an axially shiftable axle which when so shifted causes the gears of the first pair to be angularly offset with respect to each other. This causes simultaneous displacement between the third gear means and the pinion which causes the perfecting cylinder to be correspondingly offset. The supporting rod of the pinion is also provided with means permitting it to be angularly adjusted thereby causing axial offset of the gears and consequent adjustment of the form cylinder with respect thereto.
Inventors
- 👤 Miloslav Muselik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:35
CPC Classifications
B; B41; B41F; B41F13/00; B41F13/08; B41F13/10; B41F13/12; B41F13/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19898
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
225 words
In a multicolor offset printing machine having a printing cylinder and a perfecting cylinder, apparatus for circumferentially adjusting the perfecting cylinder for register printing comprising a supporting shaft extending axially from one end of the perfecting cylinder, first gear means comprising an annular helical main gear having a hub rotatably arranged about said supporting shaft and an annular helical drive gear coaxially mounted on a first shoulder of said hub and rotatable with respect to said main gear, second gear means adapted to mesh with and coact respectively with said main and drive gears, said second gear means being rotatably mounted about an axially movable axle, third gear means secured to said main gear on a second shoulder thereof adjacent the end of the perfecting cylinder, a pinion engaging said third gear means and fixedly mounted on a rod extending into the end of said perfecting cylinder and secured thereto, said helical drive gear being adapted to be driven during operation of said printing machine to effect conjoint rotation of said helical main gear and said perfecting cylinder, whereby axial shifting of said axle would cause relative angular displacement of said helical main gear and said helical drive gear consequently causing said third gear means to angularly displace said pinion causing said rod to angularly displace said perfecting cylinder relative to the helical main gear.
Claim 2
Dependent Claim
225 words
In a multicolor offset printing machine having a printing cylinder and a perfecting cylinder, apparatus for circumferentially adjusting the perfecting cylinder for register printing comprising a supporting shaft extending axially from one end of the perfecting cylinder, first gear means comprising an annular helical main gear having a hub rotatably arranged about said supporting shaft and an annular helical drive gear coaxially mounted on a first shoulder of said hub and rotatable with respect to said main gear, second gear means adapted to mesh with and coact respectively with said main and drive gears, said second gear means being rotatably mounted about an axially movable axle, third gear means secured to said main gear on a second shoulder thereof adjacent the end of the perfecting cylinder, a pinion engaging said third gear means and fixedly mounted on a rod extending into the end of said perfecting cylinder and secured thereto, said helical drive gear being adapted to be driven during operation of said printing machine to effect conjoint rotation of said helical main gear and said perfecting cylinder, whereby axial shifting of said axle would cause relative angular displacement of said helical main gear and said helical drive gear consequently causing said third gear means to angularly displace said pinion causing said rod to angularly displace said perfecting cylinder relative to the helical main gear.
Claim 3
Dependent Claim
26 words
The apparatus according to claim 1 wherein the helical main gear has teeth inclined in an opposite direction to the teeth of the helical drive gear.
Claim 4
Dependent Claim
29 words
The apparatus according to claim 2 wherein said second gear means comprise a pair of gears each having helical teeth conforming to said main gear and drive gears respectively.
Claim 5
Dependent Claim
54 words
The apparatus according to claim 1 wherein said pinion rod is retained in a holder mounted within said cylinder, said holder being provided with means for adjustably fixing the angular position of said pinion rod about its longitudinal axis, wherein the relative position of the perfecting cylinder and the main gear are angularly adjustable.
Claim 6
Dependent Claim
41 words
The apparatus according to claim 1 wherein the third gear means comprises a spur gear secured to said helical main gear and a gear collar adjustably mounted on a shoulder of said gear wheel to be angularly adjustable with respect thereto.
Claim 7
Dependent Claim
39 words
The apparatus according to claim 5 wherein the gear collar is provided with a plurality of arcuate slots, screw means extending through said arcuate slots and through said spur gear to be threadedly retained in said helical main gear.
Claim 8
Dependent Claim
51 words
The apparatus according to claim 6 in which the facing surfaces of said spur gear wheel and said spur gear collar is provided with a plurality of paired arcuate grooves, a spring located in each pair of grooves resiliently biasing said gear collar and spur gear wheel against angular relative rotation.
Claim 9
Dependent Claim
20 words
The apparatus according to claim 4 including means for Clamping said pinion rod in said holder in fixed adjusted position.
Claim 10
Dependent Claim
62 words
The apparatus according to claim 1 including a disc fixed on the helical main gear, said disc being provided with an axial leg extending into a circular slot formed in a slide ring mounted over the end of said perfecting cylinder, said disc being provided with a scale and said ring being provided with an indicator marking located opposite to said scale.
Claim 11
Dependent Claim
53 words
The apparatus according to claim 1 wherein the means for axially moving said axle comprising a sleeve having an internal threaded bore surrounding said axle, said axle being formed with a conforming threaded surface, and means for rotating said axle whereby the interaction of said threaded surfaces causes axial displacement of said axle.
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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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |