Patent US6201791B1 successfully refreshed from Google Patents.
US3754647A
Expired / Lapsed
US
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Apparatus and method for removing selected sheets from the lower bridge of a corrugated paper board manufacturing machine
Assignee: OI Glass Inc
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Filing: 1972-02-22
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Granted: 1973-08-28
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Expires: 1992-02-22
Abstract
Abstract Apparatus and method for removing selected sheets from the lower bridge of a corrugated paperboard manufacturing machine. In the present invention, a slot is provided in the upper bridge of a corrugated paperboard manufacturing machine. Under the slot, an inclined sorting conveyor is positioned at a point adjacent the lower bridge of the corrugated machine. A hold-down conveyor is also mounted on the upper bridge adjacent to the sorting conveyor such that sheets of corrugated paperboard are drivingly engaged between the two conveyors. When defective sheets of paperboard appear on the lower bridge, the machine operator activates a lever which raises fingers into position to divert the defective sheets. The defective sheets are engaged by the sorting conveyor and the hold-down conveyor and transported through the slot in the upper bridge. Sheets so removed from the stream of production are stacked and stored for disposal in a rack positioned over the upper bridge of the machine.
Inventors
- 👤 Frank F Di
- 👤 W Skudlarek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:42
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/58; B65H29/62; B65H2701/00; B65H2701/10; B65H2701/17; B65H2701/176; B65H2701/1762; Y; Y10; Y10S; Y10S209/00; Y10S209/933; Y10T; Y10T83/00; Y10T83/202; Y10T83/2033; Y10T83/2037; Y10T83/2057; Y10T83/2074; Y10T83/2083; Y10T83/2085
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
Apparatus for removing selected sheets from a lower bridge of a machine for manufacturing corrugated paperboard which longitudinally splits a continuous web of paperboard into a plurality of strips and diverts a portion of said strips to an upper bridge and the remainder of said strips to a lower bridge, the strips being diverted to the lower bridge having been transversely slit into discrete sheets subsequent to diversion and prior to entering onto said lower bridge, comprising, in combination: an upper-bridge paperboard supporting surface split into two discrete segments defining a transverse opening extending the full width of said upper bridge; means located intermediate said upper and lower bridges below said transverse opening for transporting sheets of paperboard from said lower bridge to said upper bridge through said transverse opening; and selectively operable sheet-engaging means located adjacent said lower bridge for divertIng selected sheets of paperboard from said lower bridge into said means for transporting sheets of paperboard from said lower bridge to said upper bridge.
Claim 2
Dependent Claim
166 words
Apparatus for removing selected sheets from a lower bridge of a machine for manufacturing corrugated paperboard which longitudinally splits a continuous web of paperboard into a plurality of strips and diverts a portion of said strips to an upper bridge and the remainder of said strips to a lower bridge, the strips being diverted to the lower bridge having been transversely slit into discrete sheets subsequent to diversion and prior to entering onto said lower bridge, comprising, in combination: an upper-bridge paperboard supporting surface split into two discrete segments defining a transverse opening extending the full width of said upper bridge; means located intermediate said upper and lower bridges below said transverse opening for transporting sheets of paperboard from said lower bridge to said upper bridge through said transverse opening; and selectively operable sheet-engaging means located adjacent said lower bridge for divertIng selected sheets of paperboard from said lower bridge into said means for transporting sheets of paperboard from said lower bridge to said upper bridge.
Claim 3
Dependent Claim
143 words
The apparatus of claim 1, wherein said means for transporting sheets of paperboard from said lower bridge to said upper bridge through said transverse opening comprises, in combination: an inclined sorting conveyor having one end thereof supported adjacent the downstream side of said transverse opening and having the other end thereof supported adjacent said lower bridge; an inclined hold-down conveyor partially overlying said sorting conveyor, one end of said hold-down conveyor being supported adjacent the upstream side of said transverse opening, and having the other end thereof supported adjacent said lower bridge upstream of said sorting conveyor, the relative vertical positioning of said sorting and hold-down conveyors being such that a sheet of paperboard can be drivingly engaged by both conveyors; and means for driving said sorting and hold-down conveyors such that adjacent surfaces are moving in the direction of said transverse opening.
Claim 4
Dependent Claim
69 words
The apparatus of claim 2, wherein said sorting conveyor comprises, in combination: a rotatable drive shaft supported by said upper bridge; a plurality of drive pulleys carried by said drive shaft; a rotatable idler shaft carried by a bracket supported by said lower bridge; a plurality of idler sprockets carried by said idler shaft; and a plurality of endless belts trained over said idler and drive pulleys in sequence.
Claim 5
Dependent Claim
136 words
The apparatus of claim 2, wherein said hold-down conveyor comprises, in combination: two spaced-apart, elongated frame members pivotally mounted on two support brackets carried by said upper bridge; a rotatable drive shaft carried by said frame members and said support brackets; a drive roll positioned between said frame members and carried by said drive shaft; a rotatable idler shaft supported by said spaced-apart frame members at the end of said frame members opposite said drive shaft; an idler roll positioned between said frame members and carried by said idler shaft; an endless belt having a width substantially equal to the distance between said frame members trained around said drive and idler rolls; and retractable suspension means carried by said upper bridge for supporting the end of said frame members carrying said idler shaft and idler roll.
Claim 6
Dependent Claim
114 words
The apparatus of claim 4, wherein said suspension means comprises, in combination: a cable attachment member fixed to at least one of said frame members adjacent said idler shaft; an air motor mounted on said upper-bridge member having an extensible actuating rod carrying a cable connector on its extending end; a rotatable pulley mounted on said upper bridge substantially on the center line of said air motor and positioned substantially vertically above said cable attachment member; a cable trained over said pulley and attached to said cable attachment member and said cable connector; and means for operating said air motor to raise said hold-down conveyor away from its paperboard-engaging position with said sorting conveyor.
Claim 7
Dependent Claim
93 words
The apparatus of claim 1, wherein said selectively operable sheet-engaging means comprises, in combination: a rock shaft pivotally mounted on said lower bridge adjacent said hold-down and sorting conveyors; a plurality of fingers mounted on said rock shaft and normally located in a position below the plane of sheets of paperboard passing over said lower bridge; and an operating lever attached to said rock shaft for pivoting said rock shaft to thereby raise said fingers into a position to intercept and divert sheets of paperboard into engagement with said hold-down and sorting conveyors.
Claim 8
Dependent Claim
27 words
The apparatus of claim 1, wherein said upper-bridge paperboard supporting surface comprises a pair of spaced-apart conveyors each composed of a plurality of moving endless conveyor belts.
Claim 9
Dependent Claim
20 words
The apparatus of claim 1, wherein said upper-bridge paperboard supporting surface comprisEs a pair of spaced-apart substantially horizontal slide plates.
Claim 10
Dependent Claim
37 words
The apparatus of claim 1, further including a paperboard receiving bin positioned above said upper bridge and substantially in alignment with the downstream edge of said transverse opening for receiving paperboard sheets diverted from said lower bridge.
Claim 11
Independent Claim
109 words
A method of removing selected sheets from a lower bridge of a machine for manufacturing corrugated paperboard which longitudinally splits a continuous web of paperboard into a plurality of strips and diverts a portion of said strips to an upper bridge and the remainder of said strips to a lower bridge, the strips being diverted to the lower bridge having been transversely split into discrete sheets subsequent to diversion and prior to entering onto said bridge, comprising the steps of: diverting selected sheets upward from the plane of sheet travel along said lower bridge; and propelling said diverted sheet upward through a transverse opening formed in said upper bridge.
Claim 12
Independent Claim
109 words
A method of removing selected sheets from a lower bridge of a machine for manufacturing corrugated paperboard which longitudinally splits a continuous web of paperboard into a plurality of strips and diverts a portion of said strips to an upper bridge and the remainder of said strips to a lower bridge, the strips being diverted to the lower bridge having been transversely split into discrete sheets subsequent to diversion and prior to entering onto said bridge, comprising the steps of: diverting selected sheets upward from the plane of sheet travel along said lower bridge; and propelling said diverted sheet upward through a transverse opening formed in said upper bridge.
Claim 13
Dependent Claim
55 words
A method according to claim 10, wherein the step of propelling said diverted sheet upward through a transverse opening formed in said upper bridge comprises the steps of: confining said selected sheets between two upwardly moving belt conveyors; and transporting said selected sheets at a speed sufficient to pass said sheets through said transverse opening.
Claim 14
Dependent Claim
22 words
The method of claim 10, further including the step of stacking said selected sheets in a bin positioned over said upper bridge.
References Cited (Backward Citations)
US2476371A
Cited
US3667753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |