US3586152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacking and unstacking magnetizable material
Assignee: FMC Corp
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Filing: 1969-02-24
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Granted: 1971-06-22
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Expires: 1989-02-24
Abstract
Abstract A stacking and unstacking apparatus movable along a transport conveyor transfers incoming scrap to a belt conveyor mounted on a swingable boom for discharge into large stockpiles on either side along the transport conveyor. A magnetic pulley on the outer end of the boom attracts the scrap from the stockpile to the boom belt conveyor during unstacking. Transfer chuting is employed to direct the incoming scrap to the boom conveyor during stacking and receives scrap from the boom conveyor during unstacking. The chuting is also employed to combine the incoming scrap with the scrap being unstacked and deposits the combined scrap on the transfer conveyor for movement to a loading area.
Inventors
- 👤 George E Austin
- 👤 Robert H Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:31
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
177 words
Apparatus for stacking and unstacking material of the type comprising a lower support structure, an upper structure supported by said lower structure and rotatable about a vertical axis, a boom supported intermediate its ends on said upper structure and tiltable in a vertical plane, a reversible endless conveyor on the boom, an endless transport conveyor passing beneath the upper structure and having a tripper section running to a discharge point above said upper structure; the improvement comprises a substantially vertical transfer chute extending through said upper and lower structures at said vertical axis between said tripper section discharge point and the transport conveyor beneath said upper structure, a loading chute communicating between the upper portion of said transfer chute and said boom conveyor, a guide chute leading into said transfer chute positioned to receive material discharged from the inner end of the boom conveyor and a diversion gate in said transfer chute for selectively directing material from the upper portion of said transfer chute to either the loading chute or the lower portion of said transfer chute.
Claim 2
Dependent Claim
177 words
Apparatus for stacking and unstacking material of the type comprising a lower support structure, an upper structure supported by said lower structure and rotatable about a vertical axis, a boom supported intermediate its ends on said upper structure and tiltable in a vertical plane, a reversible endless conveyor on the boom, an endless transport conveyor passing beneath the upper structure and having a tripper section running to a discharge point above said upper structure; the improvement comprises a substantially vertical transfer chute extending through said upper and lower structures at said vertical axis between said tripper section discharge point and the transport conveyor beneath said upper structure, a loading chute communicating between the upper portion of said transfer chute and said boom conveyor, a guide chute leading into said transfer chute positioned to receive material discharged from the inner end of the boom conveyor and a diversion gate in said transfer chute for selectively directing material from the upper portion of said transfer chute to either the loading chute or the lower portion of said transfer chute.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 wherein said loading chute further comprises an upwardly inclined section to guide material onto the boom conveyor when the boom is in the elevated position.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1 wherein said transfer chute, loading chute and guide chute rotate with the upper structure about said vertical axis.
Claim 5
Dependent Claim
43 words
The apparatus of claim 1 wherein said transfer chute communicates with a discharge chute mounted on the lower structure to convey material to the transport conveyor, said discharge chute further including spreader skirts to spread and contain the material deposited on the conveyor.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |