Patent US952007A successfully refreshed from Google Patents.
Patent US4100650A successfully refreshed from Google Patents.
US4100650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable feed plate
Assignee: HERGETH KG MUSCHINENFABRIK und APPARATEBANN
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Filing: 1976-09-28
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Granted: 1978-07-18
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Expires: 1996-09-28
Abstract
Abstract Apparatus for feeding fibrous material to a carding machine including a rotatable roll having an exterior cylindrical surface which with first and second surfaces in opposing relationship thereto defines a curved trough converging from an entrance end portion thereof in a direction of travel of the fibrous material through the trough, a tear-off point upstream of an exit end portion of the trough, the radius of curvature of the first and second surface being identical and corresponding to the radius of the first surface, and an imaginary straight line through the tear-off point being in tangential relationship to the second surface and the cylindrical surface.
Inventors
- 👤 Walter Wirth
- 👤 Robert Siegmund
- 👤 Wilhelm Borgert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:28
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/02; D01G15/12; D01G15/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
240 words
Apparatus for feeding fibrous material to a carding machine or the like ocmprising at least one rotatable roll having an exterior cylindrical surface, first and second separate curved surfaces both in opposing relationship to said cylindrical surface and defining therewith a trough through which is adapted to pass the fibrous material, said first surface preceding said second surface in the direction of travel of the fibrous material through said trough, said second surface defining an immediate generally unbroken smooth continuation of said first surface, said trough including an entrance end portion defined by an upstreammost end of said first surface and said cylindrical surface adapted to initially receive the fibrous material, said trough having an exit end portion defined between said second surface and said cylindrical surface from which is adapted to exit the fibrous material, said trough progressively curvingly convergingly tapering in a direction from said entrance end portion toward said exit end portion, said trough having a minimum cross-sectional dimension established between said cylindrical surface and said second surface defining a tear-off point for the fibrous material, said tear-off point being upstream of said exit end portion, an imaginary straight line through said tear-off point being in tangential relationship to said second surface and said cylindrical surface, and the radius of curvature of both said first and second surfaces is identical and corresponds to the radius of said first surface defining the maximum cross-sectional dimension of said trough.
Claim 2
Dependent Claim
240 words
Apparatus for feeding fibrous material to a carding machine or the like ocmprising at least one rotatable roll having an exterior cylindrical surface, first and second separate curved surfaces both in opposing relationship to said cylindrical surface and defining therewith a trough through which is adapted to pass the fibrous material, said first surface preceding said second surface in the direction of travel of the fibrous material through said trough, said second surface defining an immediate generally unbroken smooth continuation of said first surface, said trough including an entrance end portion defined by an upstreammost end of said first surface and said cylindrical surface adapted to initially receive the fibrous material, said trough having an exit end portion defined between said second surface and said cylindrical surface from which is adapted to exit the fibrous material, said trough progressively curvingly convergingly tapering in a direction from said entrance end portion toward said exit end portion, said trough having a minimum cross-sectional dimension established between said cylindrical surface and said second surface defining a tear-off point for the fibrous material, said tear-off point being upstream of said exit end portion, an imaginary straight line through said tear-off point being in tangential relationship to said second surface and said cylindrical surface, and the radius of curvature of both said first and second surfaces is identical and corresponds to the radius of said first surface defining the maximum cross-sectional dimension of said trough.
Claim 3
Dependent Claim
66 words
The apparatus as defined in claim 1 wherein said first surface is a portion of a trough plate and the latter is directly supported by a rigid beam in part defining said second surface, said rigid beam having a length corresponding generally to the axial length of said roll, and support means are provided for generally immovably supporting said rigid beam relative to said first surface.
Claim 4
Dependent Claim
40 words
The apparatus as defined in claim 1 including carrier means carrying said first and second surfaces, and means for selectively adjusting the position of said carrier means relative to said roll for selectively varying the cross-sectional size of said trough.
Claim 5
Dependent Claim
70 words
The apparatus as defined in claim 1 wherein said first and second surfaces are carried by a carrier, means mounting said carrier for sliding movement toward and away from said rotatable roll whereby the cross-sectional size of said trough can be varied, and screw means having a generally horizontally disposed axis for positioning said carrier selectively at any one of a plurality of positions different distances from said rotatable roll.
Claim 6
Dependent Claim
53 words
The apparatus as defined in claim 1 wherein said first surface is a portion of a trough plate and the latter is directly supported by a rigid beam in part defining said second surface, and screw means having a generally horizontally disposed axis for removably securing said trough plate and rigid beam together.
Claim 7
Dependent Claim
53 words
The apparatus as defined in claim 4 wherein said first surface is a portion of a trough plate and the latter is directly supported by a rigid beam in part defining said second surface, and screw means having a generally horizontally disposed axis for removably securing said trough plate and rigid beam together.
Claim 8
Independent Claim
196 words
A method of feeding fibrous material to a carding machine of the like comprising the steps of forming a feed trough between a rotatable cylindrical surface and first and second separate surfaces both in opposing relationship to the cylindrical surface with the first surface preceding the second surface in the direction of travel of fibrous material through the trough, the trough having an entrance end portion of an open area greater than the area of an exit end portion, and the trough progressively curvingly converging in a direction from the entrance end portion to a point of minimum cross-sectional area at a tear-off point for the fibrous material at which an imaginary straight line through the tear-off point is in tangential relationship to both the second surface and the cylindrical surface, changing the location of the tear-off point relative to the entrance end portion of the trough to vary the length of fibers combed from the fibrous material during the transport thereof through the trough by substituting another separate surface for and of a different length than the second surface, while maintaining the progressive curving convergence of the trough, and feeding fibrous material through the trough.
Claim 9
Independent Claim
196 words
A method of feeding fibrous material to a carding machine of the like comprising the steps of forming a feed trough between a rotatable cylindrical surface and first and second separate surfaces both in opposing relationship to the cylindrical surface with the first surface preceding the second surface in the direction of travel of fibrous material through the trough, the trough having an entrance end portion of an open area greater than the area of an exit end portion, and the trough progressively curvingly converging in a direction from the entrance end portion to a point of minimum cross-sectional area at a tear-off point for the fibrous material at which an imaginary straight line through the tear-off point is in tangential relationship to both the second surface and the cylindrical surface, changing the location of the tear-off point relative to the entrance end portion of the trough to vary the length of fibers combed from the fibrous material during the transport thereof through the trough by substituting another separate surface for and of a different length than the second surface, while maintaining the progressive curving convergence of the trough, and feeding fibrous material through the trough.
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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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |