US3558126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driving means for the control of feeding devices of sheet material
Assignee: Adamovske Strojirny AS
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Filing: 1968-08-20
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Granted: 1971-01-26
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Expires: 1988-08-20
Abstract
Abstract Apparatus for the pneumatic feeding of individual sheets from a sheet stack to printing machines, in which the drive is derived from a driving shaft, the axis of which is parallel to the sheet stack and in direction of supply of the sheets. The driving shaft supports a number of cams transmitting motion to individual mechanisms of the feeding device and controlling vacuum and pressurized air supply for different functional purposes which are all located in a common housing.
Inventors
- 👤 Jaroslav Jiruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:08
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/48; B65H3/08; B65H3/0808; B65H3/0816; B65H3/0825; B65H5/00; B65H5/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
174 words
Apparatus for pneumatically feeding sheets from a stack to a receiving means comprising a supporting frame, a suction mechanism movable with respect to said frame, said suction mechanism having suction cups for holding said sheets during transfer, a sensing mechanism movable with respect to said frame for intermittently compressing the sheet stack and for directing an air stream to support a transferred sheet, flowing means for loosening the upper sheets of said stack, rotary suction and pressure valves mounted within said frame for controlling the supply of air to said suction mechanism, sensing device, and flowing means, a driving shaft rotatably supported within said frame, the axis of said driving shaft being arranged parallel with said sheet stack and the direction of transfer of said sheets, a plurality of cams fixed to said drive shaft and rotatable therewith, said cams being respectively associated with each of said suction, and sensing mechanisms and said rotary valves and connecting means between said cams and their associated mechanisms, whereby said associated mechanisms are simultaneously and synchronously operated.
Claim 2
Dependent Claim
174 words
Apparatus for pneumatically feeding sheets from a stack to a receiving means comprising a supporting frame, a suction mechanism movable with respect to said frame, said suction mechanism having suction cups for holding said sheets during transfer, a sensing mechanism movable with respect to said frame for intermittently compressing the sheet stack and for directing an air stream to support a transferred sheet, flowing means for loosening the upper sheets of said stack, rotary suction and pressure valves mounted within said frame for controlling the supply of air to said suction mechanism, sensing device, and flowing means, a driving shaft rotatably supported within said frame, the axis of said driving shaft being arranged parallel with said sheet stack and the direction of transfer of said sheets, a plurality of cams fixed to said drive shaft and rotatable therewith, said cams being respectively associated with each of said suction, and sensing mechanisms and said rotary valves and connecting means between said cams and their associated mechanisms, whereby said associated mechanisms are simultaneously and synchronously operated.
Claim 3
Dependent Claim
65 words
The apparatus according to claim 1, wherein the cam associated with said suction means comprises a drum having a circumferential groove and its associated connecting mechanism comprises an oscillating lever having one end provided with a pair of forked arms straddling said drum, each arm having a roller engaged within said groove, the other end of said oscillating lever being connected to said suction mechanism.
Claim 4
Dependent Claim
63 words
The apparatus according to claim 1, wherein each of the cams associated with said rotary suction and pressure valves comprises a disc having a laterally extending groove formed in the face thereof and the associated connecting means comprises a forked lever movably supported by said frame and engaging said valve, said forked lever having roller means engaging into the groove of said cam.
Claim 5
Dependent Claim
64 words
The apparatus according to claim 3, wherein said rotary valves comprise a housing having a radial hole communicating with a source of air, and a cooperating rotating member axially aligned therein and having an aperture communicating with said aperture in said housing, said rotary member being connected to said forked lever, said rotary valve being aligned along an axis parallel to said drive shaft.
Claim 6
Dependent Claim
21 words
The apparatus according to claim 4, including means for regulating the relative rotation between said rotary member and said valve housing.
Claim 7
Dependent Claim
49 words
The apparatus as claimed in claim 1, wherein the cam associated with the sensing mechanism comprises a disc cam having a peripheral cam face and said connecting means associated therewith comprises a pivotal lifter member having a roller engaging said cam surface and being connected to said sensing mechanism.
Claim 8
Dependent Claim
19 words
The apparatus according to claim 6, including spring means for normally biasing said lifter member in a predetermined direction.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |