Patent US3880059A successfully refreshed from Google Patents.
US3880059A
Expired / Lapsed
US
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Apparatus for piling flat workpieces
Assignee: Windmoeller and Hoelscher KG
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Filing: 1972-04-05
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Granted: 1975-04-29
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Expires: 1992-04-05
Abstract
Abstract A method of stacking flat workpieces such as tube portions, in which the front workpieces of a succession of workpieces in an overlap formation are arrested and delayed, still overlapped, from moving to the stacking station until the preceding stack being formed is completed and moved away. The front workpieces are then released and form the bottom workpieces of new stack. The apparatus has arresting means for delaying the workpieces in their overlapped formation at the discharge end of a belt for feeding the workpieces from a workpiece processing machine to a stack-forming belt.
Inventors
- 👤 Friedrich Franz Brockmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:43
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/66; B65H29/12; B65H29/14; B65H31/00; B65H31/32; B65H33/00; B65H33/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
Apparatus for piling flat workpieces comprising a continuously moving overlap-formation conveyor belt followed by a piling belt which moves at least when changing piles, said piling belt associated with stop means for arresting and aligning workpieces thereon, in which said stop means is moveable away from said workpieces for conveying the piles away; wherein the improvement comprises: arresting means at the discharge end of the overlap-formation conveyor belt for arresting a plurality of overlapped workpieces, the forward edges of which workpieces have already left the overlap-formation conveyor belt, which arresting means exert pressure against the overlapped workpieces from opposite sides at least during the time the workpieces are stopped, said arresting means comprising pressure rollers and pressure belts which move during pile formation at the conveying speed of the overlap-formation conveyor belt and which develops said pressure which acts from above and below the overlapped workpieces; and wherein at least one of said pressure rollers or pressure belts can be stopped during the changing of piles by immediately acting brake means.
Claim 2
Dependent Claim
171 words
Apparatus for piling flat workpieces comprising a continuously moving overlap-formation conveyor belt followed by a piling belt which moves at least when changing piles, said piling belt associated with stop means for arresting and aligning workpieces thereon, in which said stop means is moveable away from said workpieces for conveying the piles away; wherein the improvement comprises: arresting means at the discharge end of the overlap-formation conveyor belt for arresting a plurality of overlapped workpieces, the forward edges of which workpieces have already left the overlap-formation conveyor belt, which arresting means exert pressure against the overlapped workpieces from opposite sides at least during the time the workpieces are stopped, said arresting means comprising pressure rollers and pressure belts which move during pile formation at the conveying speed of the overlap-formation conveyor belt and which develops said pressure which acts from above and below the overlapped workpieces; and wherein at least one of said pressure rollers or pressure belts can be stopped during the changing of piles by immediately acting brake means.
Claim 3
Dependent Claim
12 words
Apparatus according to claim 1 wherein the brake means are magnetic brakes.
Claim 4
Dependent Claim
101 words
Apparatus according to claim 1 wherein the arresting means includes a pressure roller which lies below the plane of overlap conveyance and which can be driven from the overlap-formation belt driving means by way of clutch means at the same peripheral speed as the overlap-formation belt, the diameter of the pressure roller being smaller than that of the adjacent guide roller of the overlap-formation conveyor belt, and above the plane of conveyance of the overlap-formation belt at least one endless pressure belt which passes over two guide rollers, the pressure belt being driven in operation by friction from the overlapped workpieces.
Claim 5
Dependent Claim
42 words
Apparatus according to claim 3 wherein said two guide rollers are carried on a mounting frame which is supported so that it can swing freely about an axis extending transversely to the direction of conveyance and lying between said two guide rollers.
Claim 6
Dependent Claim
15 words
Apparatus according to claim 4 wherein the mounting frame is longitudinally and vertically adjustably supported.
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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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |