US3915852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dividing apparatus and method
Assignee: Individual
•
Filing: 1973-09-21
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Granted: 1975-10-28
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Expires: 1993-09-21
Abstract
Abstract A dividing apparatus and method of dividing a continuously flowing stream of particulate material into two separate streams. The apparatus, in a specific embodiment, is used with a plural deck screen, the apparatus being secured over the loading end of a screen deck, a first screen deck being positioned beneath the second screen with its loading end disposed beneath but displaced from the loading end of the second screen deck such that the loading ends of both screens are exposed from above. The divider has an impingement surface upon which a continuously flowing stream of particulate material is directed, a portion of the stream passes the impingement surface and is deposited upon the loading end of the second screen deck, the remainder impinges on the divider and is deposited upon the loading end of the first screen deck.
Inventors
- 👤 George M Butzow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:05
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/06; B22C5/04; B22C5/0404
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
219 words
An apparatus for use with a continuously flowing stream of particulate material having varying flow properties comprising a frame, a first screen mounted on said frame, a second screen mounted on said frame over said first screen, said second screen having a peripheral boundary thereof disposed over said first screen whereby both said second screen and a portion of said first screen are exposed from above, a divider mounted on said frame adjacent to said second screen peripheral boundary, said divider having an impingement surface thereon, said impingement surface having at least one opening therein, said impingement surface and a vertical defining an angle therebetween, whereby particulate material delivered on said divider will both pass through said opening and will impinge on said surface and be delivered onto said first and second screens, said screen on which said particulate material impinging on said surface is delivered having a larger capacity for said particulate material than the other screen, the capacity of said other screen on which said particulate material passing through said opening is deposited changing as the flow properties of said particulate material changes, said other screen capacity being less with less flowable material being more with more flowable material, said particulate material delivered onto said other screen being generally commensurate with said capacity of said other screen.
Claim 2
Independent Claim
219 words
An apparatus for use with a continuously flowing stream of particulate material having varying flow properties comprising a frame, a first screen mounted on said frame, a second screen mounted on said frame over said first screen, said second screen having a peripheral boundary thereof disposed over said first screen whereby both said second screen and a portion of said first screen are exposed from above, a divider mounted on said frame adjacent to said second screen peripheral boundary, said divider having an impingement surface thereon, said impingement surface having at least one opening therein, said impingement surface and a vertical defining an angle therebetween, whereby particulate material delivered on said divider will both pass through said opening and will impinge on said surface and be delivered onto said first and second screens, said screen on which said particulate material impinging on said surface is delivered having a larger capacity for said particulate material than the other screen, the capacity of said other screen on which said particulate material passing through said opening is deposited changing as the flow properties of said particulate material changes, said other screen capacity being less with less flowable material being more with more flowable material, said particulate material delivered onto said other screen being generally commensurate with said capacity of said other screen.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 wherein said angle defined by said iMpingement surface and said vertical is about 65*.
Claim 4
Dependent Claim
52 words
The apparatus of claim 1 wherein said impingement surface of said divider has an area sufficiently large to have the entire delivery of the particulate material delivered onto said divider within the boundaries of said impingement surface, and wherein said opening is substantially larger than the particle size of said particulate material.
Claim 5
Dependent Claim
24 words
The apparatus of claim 3 wherein both of said screens include a deck of mesh material, said other screen being of the finer mesh.
Claim 6
Dependent Claim
76 words
The apparatus of claim 4 wherein said first and second screens are elongated and have spaced apart loading and discharge ends, said second screen loading end being positioned over said first screen loading end, said second screen loading end also being adjacent to but displaced from said first screen loading end, thereby to expose both said first and second screen loading ends from above and wherein said divider is mounted over said second screen loading end.
Claim 7
Dependent Claim
57 words
The apparatus of claim 5 wherein said elongated first and second screens extend in the same direction, said second screen being over said first screen with said first screen loading end extending beyond said loading end of said second screen, said impingement surface extending transversely of the longitudinal direction of said screens over the entire width thereof.
Claim 8
Dependent Claim
94 words
The apparatus of claim 6 wherein said divider comprises an elongated element extending across said second screen adjacent to said second screen loading end, an elongated plate member extending in the same direction as said element and having opposite ends, two leg members secured to said opposite plate ends to extend from said opposite ends, respectively, transversely thereof in the same direction, said leg members being adjustably secured to said element, said plate member and its leg members and said element having an upwardly facing impingement surface thereon and defining therebetween said opening therein.
Claim 9
Dependent Claim
23 words
The screen of claim 4 further comprising means for selectively varying the size of said divider opening, and means for vibrating said divider.
Claim 10
Independent Claim
159 words
A METHOD OF DIVIDING A STREAM OF PARTICULATE MATERIAL COMPRISING THE STEPS OF IMPINGING A PORTION OF A STREAM OF PARTICULATE MATERIAL ON AN UPWARDLY FACING SURFACE OF A DIVIDER AND ONTO A FIRST SCREEN, SAID DIVIDER HAVING AT LEAST ONE OPENING THEREIN OF A SIZE SUBSTANTIALLY LARGER THAN THE PARTICLE SIZE OF SAID PARTICULATE MATERIAL, MOUNTING A SECOND SCREEN DIRECTLY BENEATH SAID DIVIDER, PASSING THE REMAINDER OF SAID STREAM THROUGH SAID OPENING ONTO SAID SECOND SCREEN SAID SECOND SCREEN HAVING A CAPACITY WHICH CHANGES AS THE FLOW PROPERTIES OF SAID PARTICULATE MATERIAL CHANGES, SAID SECOND SCREEN CAPACITY BEING LESS WITH LESS FLOWABLE MATERIAL AND BEING MORE WITH MORE FLOWABLE MATERIAL, WHEREIN ALL OF SAID STREAM EITHER IMPINGES ON SAID SURFACE, OR PASSES THROUGH SAID OPENING, SAID REMAINDER VARYING IN SIZE AS THE CAPACITY OF SAID SECOND SCREEN VARIES, WEREBY SAID SECOND SCREEN IS NOT OVERLOADED, AND FURTHER COMPRISING THE STEP OF VIBRATING BOTH SAID SCREENS AND SAID DIVIDER.
Claim 11
Independent Claim
159 words
A METHOD OF DIVIDING A STREAM OF PARTICULATE MATERIAL COMPRISING THE STEPS OF IMPINGING A PORTION OF A STREAM OF PARTICULATE MATERIAL ON AN UPWARDLY FACING SURFACE OF A DIVIDER AND ONTO A FIRST SCREEN, SAID DIVIDER HAVING AT LEAST ONE OPENING THEREIN OF A SIZE SUBSTANTIALLY LARGER THAN THE PARTICLE SIZE OF SAID PARTICULATE MATERIAL, MOUNTING A SECOND SCREEN DIRECTLY BENEATH SAID DIVIDER, PASSING THE REMAINDER OF SAID STREAM THROUGH SAID OPENING ONTO SAID SECOND SCREEN SAID SECOND SCREEN HAVING A CAPACITY WHICH CHANGES AS THE FLOW PROPERTIES OF SAID PARTICULATE MATERIAL CHANGES, SAID SECOND SCREEN CAPACITY BEING LESS WITH LESS FLOWABLE MATERIAL AND BEING MORE WITH MORE FLOWABLE MATERIAL, WHEREIN ALL OF SAID STREAM EITHER IMPINGES ON SAID SURFACE, OR PASSES THROUGH SAID OPENING, SAID REMAINDER VARYING IN SIZE AS THE CAPACITY OF SAID SECOND SCREEN VARIES, WEREBY SAID SECOND SCREEN IS NOT OVERLOADED, AND FURTHER COMPRISING THE STEP OF VIBRATING BOTH SAID SCREENS AND SAID DIVIDER.
References Cited (Backward Citations)
US149850A
Cited
US510768A
Cited
US1051157A
Cited
US2908391A
Cited
US3022089A
Cited
US3077266A
Cited
US3388797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |