Patent US3752096A successfully refreshed from Google Patents.
US3752096A
Expired / Lapsed
US
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Looper and method for producing cut pile tufts
Assignee: Fieldcrest Cannon Inc
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Filing: 1971-04-28
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Granted: 1973-08-14
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Expires: 1991-04-28
Abstract
Abstract A tufting machine arranged to produce cut pile carpets and having work feeding and tuft forming devices including a reciprocable eye-pointed needle movable through a backing for the carpet between retracted and extended positions, has a double looper with a lower bill and an upper bill off-set from the lower bill. When the looper advances, the upper bill passes entirely outside the loop formed by the projecting needle so that a single long loop is formed around the lower bill only in each succeeding loop-forming cycle. In a tufting machine arranged to produce relatively dense ''''U''''-cut pile tufts, the single long loop around the lower bill is deformed, and a yarn severing knife severs the yarn adjacent the lower edge of the lower bill to produce cut pile of a substantially uniform length. In a tufting machine arranged to produce high shag carpets, a yarn severing knife cooperates with the upper bill to cut one leg of the needle loop adjacent the bottom edge of the upper bill, thereby forming a short pile length and a much longer pile length to produce a pronounced ''''J'''' cut pile tuft.
Inventors
- 👤 H Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:52
CPC Classifications
D; D05; D05C; D05C15/00; D05C15/04; D05C15/08; D05C15/16; D05C15/24; D05C15/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
In a tufting machine arranged to produce cut pile carpets, said tufting machine having work feeding and tuft forming devices including a reciprocable eye-pointed needle movable through a backing for said carpet along a path between retracted and extended positions, and a double looper having a lower bill cooperating with said reciprocable needle to form a long needle loop defining first and second loop legs extending downwardly from said backing around said lower bill and an upper bill having at least a tip portion off-set laterally from said lower bill and arranged to pass outside said long needle loop.
Claim 2
Dependent Claim
99 words
In a tufting machine arranged to produce cut pile carpets, said tufting machine having work feeding and tuft forming devices including a reciprocable eye-pointed needle movable through a backing for said carpet along a path between retracted and extended positions, and a double looper having a lower bill cooperating with said reciprocable needle to form a long needle loop defining first and second loop legs extending downwardly from said backing around said lower bill and an upper bill having at least a tip portion off-set laterally from said lower bill and arranged to pass outside said long needle loop.
Claim 3
Dependent Claim
55 words
Apparatus according to claim 1, wherein said tufting machine is arranged to produce high cut pile shag carpets and further comprising a yarn severing knife arranged for movement against said upper bill to sever one leg of said needle loop intermediate its length against said upper bill to produce a pronounced ''''J'''' cut pile tuft.
Claim 4
Dependent Claim
88 words
Apparatus according to claim 2, in which said tufting machine is provided with multiple needles, a series of double loopers each having upper and lower bills, of which the upper bills are off-set laterally from the lower bills to pass outside the paths of the respective needles, and a series of yarn severing knives each knife arranged for movement against a said upper bill to sever one leg of a said needle loop intermediate its length against said upper bill to produce a pronounced ''''J'''' cut pile tuft.
Claim 5
Dependent Claim
88 words
Apparatus according to claim 1 wherein said tufting machine is arranged to produce relatively dense cut pile carpets, said upper bill in passing outside said needle loop thereby deforms said long needle loop so that the length of one of said loop legs is greater than the length of the other of said loop legs, and said apparatus further comprises a knife mechanism arranged to sever said needle looP adjacent the lower edge of said lower bill to produce a relatively dense cut pile of substantially uniform length.
Claim 6
Dependent Claim
47 words
The apparatus of claim 4 wherein said knife mechanism comprises a yarn severing knife arranged for movement against said lower bill adjacent said lower edge to sever the longer of said loop legs intermediate its length to produce said relatively dense cut pile of substantially uniform length.
Claim 7
Dependent Claim
100 words
The apparatus of claim 5 wherein said tufting machine is provided with multiple reciprocable eye-pointed needles, a series of double loopers each cooperating with the respective needle to form a long needle loop and each having an upper and a lower bill, each of said upper bills being off-set laterally from the respective lower bill to pass outside the respective long needle loop, and a series of said yarn severing knives each arranged for movement against the respective lower bill adjacent its lower edge to sever the respective loop to produce said relatively dense cut pile of substantially uniform length.
Claim 8
Independent Claim
148 words
A method of producing cut pile carpets on a tufting machine having work feeding and tuft forming devices including a reciprocable eye-pointed needle movable along a path between retracted and extended positions and a yarn severing knife, said method comprising the steps of: providing a double looper having an upper and a lower bill, said upper bill having a tip portion only off-set laterally from said lower bill, and a main portion aligned with said lower bill, forming a single long loop having first and second loop legs extending downwardly from a backing supporting said pile about said lower bill while by-passing said upper bill main portion, one of said legs thereby having a greater length than the other of said formed legs, and moving said yarn severing knife relatively to one of said bills to sever one of said loop legs at a point intermediate its length.
Claim 9
Independent Claim
148 words
A method of producing cut pile carpets on a tufting machine having work feeding and tuft forming devices including a reciprocable eye-pointed needle movable along a path between retracted and extended positions and a yarn severing knife, said method comprising the steps of: providing a double looper having an upper and a lower bill, said upper bill having a tip portion only off-set laterally from said lower bill, and a main portion aligned with said lower bill, forming a single long loop having first and second loop legs extending downwardly from a backing supporting said pile about said lower bill while by-passing said upper bill main portion, one of said legs thereby having a greater length than the other of said formed legs, and moving said yarn severing knife relatively to one of said bills to sever one of said loop legs at a point intermediate its length.
Claim 10
Dependent Claim
62 words
The method of claim 7 wherein said tufting machine is arranged to produce relatively high density cut pile carpets and the step of moving said yarn severing knife includes moving said knife relatively to said lower bill to sever the longer of said loop legs at a point intermediate its length for producing relatively dense cut pile having a substantially uniform length.
Claim 11
Dependent Claim
60 words
The method of claim 7 wherein said tufting machine is arranged to produce high cut pile shag carpets and the step of moving said yarn severing knife includes moving said knife relatively to said upper bill to sever one of said legs intermediate its length adjacent the lower edge of said upper bill to produce pronounced ''''J'''' cut pile tufts.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |