US4574433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibre metering arrangement
Assignee: Haigh Chadwick Ltd
•
Filing: 1984-03-20
•
Granted: 1986-03-11
•
Expires: 2004-03-20
Abstract
Abstract A fibre metering arrangement comprises a supply conveyor carrying fibre to a weighplate, and a nip roller arrangement removing the fibre from the weighplate, and being sufficiently spaced from the weighplate so as not to cause the fibre to accumulate over the weighplate. If the gap is such that some fleece might sag, a bridging plate or a take-off conveyor can be inserted. Preferably, there is a draft between the supply conveyor and the take-off conveyor or nip rollers.
Inventors
- 👤 David Brunnschweiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:06
CPC Classifications
D; D01; D01G; D01G23/00; D01G23/06
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
71 words
A fibre metering arrangement comprising a supply conveyor conveying fibre in a delivery direction to a delivery end thereof, a non-conveying weighplate positioned downstream from said delivery end, whereby said supply conveyor carries fibre to said weighplate, and a roller arrangement downstream from said weighplate for removing fibre from said weighplate, said roller arrangement being spaced from said weighplate by a distance sufficient to prevent fibre from accumulating over said weighplate.
Claim 2
Dependent Claim
71 words
A fibre metering arrangement comprising a supply conveyor conveying fibre in a delivery direction to a delivery end thereof, a non-conveying weighplate positioned downstream from said delivery end, whereby said supply conveyor carries fibre to said weighplate, and a roller arrangement downstream from said weighplate for removing fibre from said weighplate, said roller arrangement being spaced from said weighplate by a distance sufficient to prevent fibre from accumulating over said weighplate.
Claim 3
Dependent Claim
17 words
A fibre metering arrangement according to claim 1, in which the said roller arrangement comprises nip rollers.
Claim 4
Dependent Claim
27 words
A fibre metering arrangement according to claim 1, wherein said distance is at least equal to the thickness of any fibre to be metered by the arrangement.
Claim 5
Dependent Claim
36 words
A fibre metering arrangement according to claim 3, in which said roller arrangement comprises nip rollers having a nip point, said nip point being spaced at least ten centimeters distance from an edge of the weighplate.
Claim 6
Dependent Claim
26 words
A fibre metering arrangement according to claim 1, in which the said roller arrangement comprises a single roller and a dish cooperating with said single roller.
Claim 7
Dependent Claim
21 words
A fibre metering arrangement according to claim 1, comprising further fibre support means provided between the weighplate and the nip rollers.
Claim 8
Dependent Claim
16 words
A fibre metering arrangement according to claim 6, said further support means comprising a bridging plate.
Claim 9
Dependent Claim
16 words
A fibre metering arrangement according to claim 6, said further support means comprising a take-off conveyor.
Claim 10
Dependent Claim
22 words
A fibre metering arrangement according to claim 8, in which a draft is provided between the supply conveyor and the take-off conveyor.
Claim 11
Dependent Claim
20 words
A fibre metering arrangement according to claim 9, in which the take-off conveyor runs 10% faster than the supply conveyor.
Claim 12
Dependent Claim
22 words
A fibre metering arrangement according to claim 9, in which a draft is provided between the roller arrangement and the take-off conveyor.
Claim 13
Dependent Claim
20 words
A fibre metering arrangement according to claim 11, in which the roller arrangement runs 10% faster than the take-off conveyor.
Claim 14
Dependent Claim
20 words
A fibre metering arrangement according to claim 10, in which the roller arrangement is driven independently of the supply conveyor.
Claim 15
Dependent Claim
20 words
A fibre metering arrangement according to claim 8, in which the take-off conveyor is driven independently of the supply conveyor.
Claim 16
Dependent Claim
22 words
A fibre metering arrangement according to claim 1, in which a draft is provided between the supply conveyor and the roller arrangement.
Claim 17
Dependent Claim
20 words
A fibre metering arrangement according to claim 15, in which the roller arrangement runs 10% faster than the supply conveyor.
Claim 18
Dependent Claim
18 words
A fibre metering arrangement according to claim 1, including control means operative to effect a constant weight output.
Claim 19
Dependent Claim
50 words
A fibre metering arrangement according to claim 17, in which said control means include means to control the speed of the supply conveyor in response to signals from the weighplate so as to tend to maintain the indicated weight constant, while the speed of the roller arrangement is maintained steady.
Claim 20
Dependent Claim
18 words
A fibre metering arrangement according to claim 17, in which the bridging plate has a low friction surface.
Claim 21
Dependent Claim
17 words
A fibre metering arrangement according to claim 19, in which the low friction surface is of polytetrafluoroethylene.
Claim 22
Dependent Claim
17 words
A fibre metering arrangement according to claim 1, in which the weighplate has a low friction surface.
Claim 23
Dependent Claim
17 words
A fibre metering arrangement according to claim 21, in which the low friction surface is of polytetrafluoroethylene.
Claim 24
Dependent Claim
27 words
A fibre metering arrangement according to claim 1, in which a conveyor of the arrangement has a surface friction substantially higher than that of the weighplate surface.
Claim 25
Dependent Claim
29 words
A fibre metering arrangement according to claim 23, in which the moisture content means affects rate of metering so as to compensate for the moisture content of the fibre.
Claim 26
Dependent Claim
19 words
A fibre metering arrangement according to claim 1, including means for determining the moisture content of fibres being metered.
Claim 27
Dependent Claim
15 words
A fibre metering arrangement according to claim 25, said moisture content means comprising capacitance means.
Claim 28
Dependent Claim
16 words
A fibre metering arrangement according to claim 26, capacitance means comprising the weighplate as one electrode.
References Cited (Backward Citations)
CA587418A
Cited
CA635606A
Cited
GB1141361A
Cited
US3363286A
Cited
US3829751A
Cited
GB1443258A
Cited
DE2506061A1
Cited
US4199843A
Cited
US4271565A
Cited
US4387486A
Cited
US4506413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |