US4050692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding machine
Assignee: Georg Spiess GmbH
•
Filing: 1976-02-17
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Granted: 1977-09-27
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Expires: 1996-02-17
Abstract
Abstract A device for feeding sheets to another machine, said device having conveying rollers continuously rotating at the same peripheral speed as the receiving rollers of the fed machine. Gripper devices reciprocate toward and away from the conveying rollers to pick up a sheet and accelerate it to the peripheral speed of the rollers. The gripper devices are disengageably coupled to the conveying rollers to be driven thereby and to be actuated in time sequence with the fed machine.
Inventors
- 👤 Josef Marass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:38
CPC Classifications
B; B65; B65H; B65H9/00; B65H9/10; B65H9/103; B65H9/105; B65H5/00; B65H5/08; B65H5/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
In a device for feeding sheets to a fed machine, said device having stationary conveying rollers that rotate continuously at the same peripheral speed as receiving rollers of the fed machine and gripper devices which reciprocate toward and away from the conveying rollers, the improvement comprising: A. crank means for driving the gripper devices from the conveying rollers in a reciprocating motion such that the gripper devices accelerate said sheets to about the peripheral speed of the conveying rollers; and B. clutch means connected between the continuously rotating conveying rollers and the crank means for the reciprocating gripper devices for engaging said crank means in time sequence with said fed machine, said clutch means being actuated in said time sequence by a rotating cam driven in timed relationship with said fed machine and a cam follower having an end for contacting the rotating cam and an actuating end for mechanically actuating the clutch means, said cam follower being pivoted between said ends.
Claim 2
Dependent Claim
162 words
In a device for feeding sheets to a fed machine, said device having stationary conveying rollers that rotate continuously at the same peripheral speed as receiving rollers of the fed machine and gripper devices which reciprocate toward and away from the conveying rollers, the improvement comprising: A. crank means for driving the gripper devices from the conveying rollers in a reciprocating motion such that the gripper devices accelerate said sheets to about the peripheral speed of the conveying rollers; and B. clutch means connected between the continuously rotating conveying rollers and the crank means for the reciprocating gripper devices for engaging said crank means in time sequence with said fed machine, said clutch means being actuated in said time sequence by a rotating cam driven in timed relationship with said fed machine and a cam follower having an end for contacting the rotating cam and an actuating end for mechanically actuating the clutch means, said cam follower being pivoted between said ends.
Claim 3
Dependent Claim
16 words
The improvement set forth in claim 1 in which the clutch means is a roller clutch.
Claim 4
Dependent Claim
16 words
The improvement set forth in claim 1 in which the clutch means is an electromagnetic clutch.
Claim 5
Dependent Claim
38 words
The improvement set forth in claim 1 wherein there are two sets of said gripper devices which alternately move toward and away from said conveying rollers, said sets of gripper devices being driven by a double lever crank.
Claim 6
Dependent Claim
20 words
The improvement set forth in claim 1 wherein said cam follower acts as a ratcheting mechanism for the clutch means.
Claim 7
Dependent Claim
15 words
The improvement as set forth in claim 1 wherein the gripper devices comprise suction cups.
References Cited (Backward Citations)
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US1999836A
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US2153180A
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US2266587A
Cited
US2566175A
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US3422757A
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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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |