Patent US3781005A successfully refreshed from Google Patents.
US3781005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet stacker
Assignee: Baldwin Technology Corp
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Filing: 1972-04-14
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Granted: 1973-12-25
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Expires: 1992-04-14
Abstract
Abstract The sheet stacker having a supporting frame and two sets of conveyor belts for conveying a shingled stream of sheets therebetween and into an upwardly growing stack of sheets. One set of belts terminates adjacent the stack, and the other set of belts extends across the bottom of the stack to convey the sheets into the stack. A rotatable member exists at the terminal end of the one set of belts, and sheet-advancing mechanism is mounted on and driven by the terminal end of the one set of belts to engage the stream of sheets and urge them into the stack. A pivotally mounted support arm mounts the terminal end of the one set of belts, and an adjustable support extends from the rotatable member and down to the stream for supporting the sheet-advancing means in an adjustable manner. The sheet-advancing mechanism is in the form of a roller, and small belts extend from the roller to the rotatable member on the terminal end of the one set of belts, for driving the roller and for engaging the stream to advance it into the stack. Adjustable support floors extend beneath the spaced-apart belts in the other set of belts for curving the stream as it approaches the stack, and the sheetadvancing means is therefore also adjustably mounted to be positionable along with the adjustment of the support floors.
Inventors
- 👤 A Stobb
- 👤 W Stobb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:57
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/12; B65H29/14; B65H29/66; B65H29/6654; B65H29/6663; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4212; B65H2301/42122; B65H2701/00; B65H2701/10; B65H2701/19; B65H2701/1932
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
291 words
A sheet stacker for collecting and piling sheets of paper into an upwardly growing stack of the sheets and from a shingled stream of sheets extending underneath said stack, comprising two sets of conveyor belts for engaging respective opposite faces of the stream of sheets and holding them therebetween and conveying them toward the stack of the sheets at the bottom thereof, a stop at the downstream end of the stream for stopping the sheets in their stream movement and causing them to form the stack of sheets, one of said sets of belts extending to an end position adjacent the side of the stack at the entrance of said stream into said stack for conveying the sheets up to the stack, a cylindrical rotatable member adjustably disposed adjacent the stack for supporting said one of said sets of belts at the said end position and being rotated by said one set of belts and being adjustable toward and away from said stream, the other of said sets of belts being in contact with the stream-leading edges of said sheets, a roller of an outer diameter smaller than that of said rotatable member and rotatably disposed adjacent the entrance of the stream to the stack at the juncture between said stream and said stack for moving the sheets into the stack, a plurality of endless belts operatively engaged with said rotatable member and with said roller for rotating said roller by and in direct relation to the rotation of said rotatable member, adjustable mounting means operatively connected with said rotatable member and said roller for adjustably positioning said roller and said endless belts relative to said rotatable member and to selective locations and pressures of contact with the stream of sheets.
Claim 2
Dependent Claim
291 words
A sheet stacker for collecting and piling sheets of paper into an upwardly growing stack of the sheets and from a shingled stream of sheets extending underneath said stack, comprising two sets of conveyor belts for engaging respective opposite faces of the stream of sheets and holding them therebetween and conveying them toward the stack of the sheets at the bottom thereof, a stop at the downstream end of the stream for stopping the sheets in their stream movement and causing them to form the stack of sheets, one of said sets of belts extending to an end position adjacent the side of the stack at the entrance of said stream into said stack for conveying the sheets up to the stack, a cylindrical rotatable member adjustably disposed adjacent the stack for supporting said one of said sets of belts at the said end position and being rotated by said one set of belts and being adjustable toward and away from said stream, the other of said sets of belts being in contact with the stream-leading edges of said sheets, a roller of an outer diameter smaller than that of said rotatable member and rotatably disposed adjacent the entrance of the stream to the stack at the juncture between said stream and said stack for moving the sheets into the stack, a plurality of endless belts operatively engaged with said rotatable member and with said roller for rotating said roller by and in direct relation to the rotation of said rotatable member, adjustable mounting means operatively connected with said rotatable member and said roller for adjustably positioning said roller and said endless belts relative to said rotatable member and to selective locations and pressures of contact with the stream of sheets.
Claim 3
Dependent Claim
37 words
The sheet stacker as claimed in claim 1, wherein said endless belts are trained on said rotatable member and said roller and extend beyond the surface of said roller for engaging said sheets immediately adjacent the stack.
Claim 4
Dependent Claim
38 words
The sheet stacker as claimed in claim 2, wherein there is one of said endless belts on each side of the belt in said one set of belts, for engaging the sheets at spaced-apart locations on said sheets.
Claim 5
Dependent Claim
71 words
The sheet stacker as claimed in claim 1, wherein said rotatable member is supported on a shaft which is adjustably positionable relative to said other set of belts for selective settings toward and away from said other set of belts, and said adjustable mounting means being supported on said shaft and being swingable and extendable therefrom and extending to said roller for supporting and positioning said roller relative to said shaft.
Claim 6
Dependent Claim
92 words
The sheet stacker as claimed in claim 1, wherein said other set of belts consists of a plurality of spaced-apart belts offset relative to each other for curving the stream transverse to its direction of flow, there being more than one said roller, with one of said rollers being for each of said spaced-apart belts and being offset in accordance with the offset of said spaced-apart belts, and a support floor for each of and disposed beneath each of said spaced-apart belts and their said rollers for slidably guiding said spaced-apart belts.
Claim 7
Dependent Claim
49 words
The sheet stacker as claimed in claim 5, including adjustable mountings for said support floors for adjustably positioning said support floors at different elevations relative to each other for curving the stream, and said adjustable mounting means for said rollers being positionable toward and away from said support floors.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |