US3643940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control attachment for sheet conveying, stacking and discharge equipment
Assignee: Universal Corrugated Box Machinery Corp
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Filing: 1970-05-06
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Granted: 1972-02-22
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Expires: 1990-05-06
Abstract
Abstract In a sheet conveying, stacking and discharge apparatus of the type in which feed from a sheet-forming apparatus to a stacking apparatus is periodically interrupted to permit the stacked sheets to be cleared, pivotal gate means for blocking movement of fed sheets to the stacking apparatus during the period in which stacked sheets are cleared. The gate means is characterized by a freedom from interference with the orientation of sheets stacked thereagainst in the course of movement from the blocking to the unblocking position.
Inventors
- 👤 John Lopez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:13
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/66; B65H33/00; B65H33/12; B65H33/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
184 words
A feeding device for advancing sheets in a selected direction comprising a feed conveyor having an inlet end and an outlet end, a discharge conveyor adjacent said outlet end, a gate member interposed between said outlet end and said discharge conveyor and extending trAnsversely across said feed conveyor, yeildable holddown means adjacent said gate and aligned with said feed conveyor for urging said sheets against said feed conveyor, said gate member being shiftable between blocking and unblocking positions of said outlet end, a conveyor, ledge portion on said gate, said ledge portion, in the blocking position of said gate, being disposed in the path of sheets on said outlet end of said feed conveyor pivot means supporting said gate for movement between said positions about a horizontal pivot axis, powerized means operatively connected to said gate member for selectively disposing said gate in said blocking and said unblocking positions, said horizontal pivot axis being located in a plane below the level of said ledge portion whereby all movements of said gate from said blocking toward said unblocking positions include components in said selected direction.
Claim 2
Dependent Claim
184 words
A feeding device for advancing sheets in a selected direction comprising a feed conveyor having an inlet end and an outlet end, a discharge conveyor adjacent said outlet end, a gate member interposed between said outlet end and said discharge conveyor and extending trAnsversely across said feed conveyor, yeildable holddown means adjacent said gate and aligned with said feed conveyor for urging said sheets against said feed conveyor, said gate member being shiftable between blocking and unblocking positions of said outlet end, a conveyor, ledge portion on said gate, said ledge portion, in the blocking position of said gate, being disposed in the path of sheets on said outlet end of said feed conveyor pivot means supporting said gate for movement between said positions about a horizontal pivot axis, powerized means operatively connected to said gate member for selectively disposing said gate in said blocking and said unblocking positions, said horizontal pivot axis being located in a plane below the level of said ledge portion whereby all movements of said gate from said blocking toward said unblocking positions include components in said selected direction.
Claim 3
Dependent Claim
186 words
A feeding device for advancing sheets in a selected direction comprising a feed conveyor having an inlet end and an outlet end, a discharge conveyor adjacent said outlet end, a gate member interposed between said outlet end and said discharge conveyor and extending transversely across said feed conveyor, said gate member being shiftable between blocking and unblocking positions of said outlet end, idler roller means on said gate, said roller means, in said blocking position, contacting said discharge conveyor thereby to support said gate, a blocking ledge portion on said gate, said ledge portion, in the blocking position of said gate, being disposed in the path of sheets on said outlet end of said feed conveyor, pivot means supporting said gate for movement between said positions about a horizontal pivot axis, powerized means operatively connected to said gate member for selectively disposing said gate in said blocking and said unblocking positions, said horizontal pivot axis being located in a plane below the level of said ledge portion whereby all movements of said gate from said blocking toward said unblocking positions include components in said selected direction.
Claim 4
Dependent Claim
186 words
A feeding device for advancing sheets in a selected direction comprising a feed conveyor having an inlet end and an outlet end, a discharge conveyor adjacent said outlet end, a gate member interposed between said outlet end and said discharge conveyor and extending transversely across said feed conveyor, said gate member being shiftable between blocking and unblocking positions of said outlet end, idler roller means on said gate, said roller means, in said blocking position, contacting said discharge conveyor thereby to support said gate, a blocking ledge portion on said gate, said ledge portion, in the blocking position of said gate, being disposed in the path of sheets on said outlet end of said feed conveyor, pivot means supporting said gate for movement between said positions about a horizontal pivot axis, powerized means operatively connected to said gate member for selectively disposing said gate in said blocking and said unblocking positions, said horizontal pivot axis being located in a plane below the level of said ledge portion whereby all movements of said gate from said blocking toward said unblocking positions include components in said selected direction.
Claim 5
Dependent Claim
195 words
A feeding device for advancing sheets in a selected direction comprising a feed conveyor having an inlet end and an outlet end, a discharge conveyor adjacent said outlet end, a gate member interposed between said outlet end and said discharge conveyor and extending transversely across said feed conveyor, said gate member being shiftable between blocking and unblocking positions of said outlet end, a blocking ledge portion on said gate, said ledge portion, in the blocking position of said gate, being disposed in the path of sheets on said outlet end of said feed conveyor, pivot means supporting said gate for movement between said positions about a horizontal pivot axis, powerized means operatively connected to said gate member for selectively disposing said gate in said blocking and said unblocking positions, said powerized means comprising a crank lever keyed to said gate member, and a double acting linear motor means interposed between said lever and a stationary frame portion of said conveyor, said horizontal pivot axis being located in a plane below the level of said ledge portion whereby all movements of said gate from said blocking toward said unblocking positions include components in said selected direction.
Claim 6
Dependent Claim
195 words
A feeding device for advancing sheets in a selected direction comprising a feed conveyor having an inlet end and an outlet end, a discharge conveyor adjacent said outlet end, a gate member interposed between said outlet end and said discharge conveyor and extending transversely across said feed conveyor, said gate member being shiftable between blocking and unblocking positions of said outlet end, a blocking ledge portion on said gate, said ledge portion, in the blocking position of said gate, being disposed in the path of sheets on said outlet end of said feed conveyor, pivot means supporting said gate for movement between said positions about a horizontal pivot axis, powerized means operatively connected to said gate member for selectively disposing said gate in said blocking and said unblocking positions, said powerized means comprising a crank lever keyed to said gate member, and a double acting linear motor means interposed between said lever and a stationary frame portion of said conveyor, said horizontal pivot axis being located in a plane below the level of said ledge portion whereby all movements of said gate from said blocking toward said unblocking positions include components in said selected direction.
Claim 7
Dependent Claim
15 words
The device of claim 3 wherein said motor means comprises a hydraulic cylinder and piston.
Claim 8
Dependent Claim
116 words
A feeding device for advancing sheets in a selected direction, comprising a feed conveyor having an input end and an outlet end, a discharge conveyor adjacent said outlet end, a gate interposed between said outlet end and said discharge conveyor and extending transversely across the path between said conveyors, a stop ledge on said gate, pivot means extending in a horizontal plane below the plane of the top surface of said feed conveyor and supporting said gate for pivotal movement between blocking and unblocking position of the outlet end of said feed conveyor, and motor means operatively connected to saId gate for shifting said gate and said stop ledge in an arcuate path between said positions.
Claim 9
Dependent Claim
116 words
A feeding device for advancing sheets in a selected direction, comprising a feed conveyor having an input end and an outlet end, a discharge conveyor adjacent said outlet end, a gate interposed between said outlet end and said discharge conveyor and extending transversely across the path between said conveyors, a stop ledge on said gate, pivot means extending in a horizontal plane below the plane of the top surface of said feed conveyor and supporting said gate for pivotal movement between blocking and unblocking position of the outlet end of said feed conveyor, and motor means operatively connected to saId gate for shifting said gate and said stop ledge in an arcuate path between said positions.
Claim 10
Dependent Claim
24 words
The device of claim 5 wherein all the arcuate movements from said blocking to said unblocking position include vectoral components in said selected 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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |