US4419791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of unrolling and piecing a lap
Assignee: RIETER MACHINE WORKS Ltd A CORP OF SWITZERLAND
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Filing: 1982-12-06
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Granted: 1983-12-13
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Expires: 2002-12-06
Abstract
Abstract A method of unrolling and piecing a lap and a lap drive for combing machines, lap drafters and similar machines having a driven pair of support rolls for supporting the lap to be unrolled for processing. One of the support rolls is uncoupled from its drive for unrolling and for piecing the fiber layer.
Inventors
- 👤 Hugo Schar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:43
CPC Classifications
D; D01; D01G; D01G19/00; D01G19/06; D01G19/08; B; B65; B65H; B65H51/00; B65H51/30; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
A method of unrolling and piecing a lap for combing machines, lap drafters and the like, comprising the steps of: supporting the lap on a pair of rolls, at least one of said rolls being connected to a drive which can be selectively engaged and disengaged; disengaging said drive to said one roll to render said roll freely rotatable whereby a fiber layer of the lap can be easily unrolled therefrom; piecing the fiber layer of said lap to a fiber layer of another lap; and thereafter engaging said drive to said roll, whereby the lap is thus driven and the fiber layer is therefore unrolled from said lap without being drafted.
Claim 2
Independent Claim
112 words
A method of unrolling and piecing a lap for combing machines, lap drafters and the like, comprising the steps of: supporting the lap on a pair of rolls, at least one of said rolls being connected to a drive which can be selectively engaged and disengaged; disengaging said drive to said one roll to render said roll freely rotatable whereby a fiber layer of the lap can be easily unrolled therefrom; piecing the fiber layer of said lap to a fiber layer of another lap; and thereafter engaging said drive to said roll, whereby the lap is thus driven and the fiber layer is therefore unrolled from said lap without being drafted.
Claim 3
Independent Claim
117 words
A method of piecing laps in a textile machine fed by an operator with heavy laps and having a lap drive comprising a pair of support rolls for supporting a lap which is to be unrolled for processing a drive for at least one of the support rolls, the drive being normally coupled to said one support roll to rotate it to unroll a lap supported thereon, said method comprising the steps of: uncoupling said drive so that both rolls can rotate freely to permit manual unrolling of a length of fiber layer from a heavy lap supported by said rolls; and piecing said length of fiber layer to the end of a lap already being processed.
Claim 4
Independent Claim
117 words
A method of piecing laps in a textile machine fed by an operator with heavy laps and having a lap drive comprising a pair of support rolls for supporting a lap which is to be unrolled for processing a drive for at least one of the support rolls, the drive being normally coupled to said one support roll to rotate it to unroll a lap supported thereon, said method comprising the steps of: uncoupling said drive so that both rolls can rotate freely to permit manual unrolling of a length of fiber layer from a heavy lap supported by said rolls; and piecing said length of fiber layer to the end of a lap already being processed.
Claim 5
Dependent Claim
19 words
The method as defined in claim 2, wherein: both said rolls are driven and both are uncoupled for piecing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |