US3931837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier for shuttleless loom
Assignee: Draper Corp
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Filing: 1975-03-05
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Granted: 1976-01-13
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Expires: 1995-03-05
Abstract
Abstract An improved carrier for use on a shuttleless loom of the type in which yarn is inserted into the warp shed from a stationary source located outside of the warp and in which a free end of the previously cut warp is gripped by the inserter carrier between biased gripper finger and a yarn guide finger to carry the end to approximately the mid point between the two sides of the loom, in which the improved inserter carrier has a yarn gripping element whose axis of rotation can be spatially varied to assure accurate and uniform contact between the gripping surfaces of the pivotable gripper element and the yarn guide element.
Inventors
- 👤 Richard L. Volpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:17
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/20; D03D47/23; D03D47/233
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
136 words
An improved carrier for inserting weft yarn into the shed formed between warp yarns on a loom of the type in which the weft yarn is supplied from a source located outside of the warp and is inserted into the shed by a carrier which is attached to a reciprocating inserter, said improved carrier, comprising: 1. a main body portion which includes: a. a shank portion for attachment to the reciprocating inserter, b. a back wall extending outwardly from said shank portion, said back wall including means defining a yarn guide, c. a top wall extending forwardly from said back wall, d. a front wall extending downwardly from said top wall a distance less than the height of said back wall, and e. a yarn gripping surface on the bottom surface of said front wall, 2.
Claim 2
Dependent Claim
136 words
An improved carrier for inserting weft yarn into the shed formed between warp yarns on a loom of the type in which the weft yarn is supplied from a source located outside of the warp and is inserted into the shed by a carrier which is attached to a reciprocating inserter, said improved carrier, comprising: 1. a main body portion which includes: a. a shank portion for attachment to the reciprocating inserter, b. a back wall extending outwardly from said shank portion, said back wall including means defining a yarn guide, c. a top wall extending forwardly from said back wall, d. a front wall extending downwardly from said top wall a distance less than the height of said back wall, and e. a yarn gripping surface on the bottom surface of said front wall, 2.
Claim 3
Dependent Claim
98 words
a yarn guide finger secured at one end to said shank portion and extending outwardly therefrom in the same direction as said front wall and located in underlying relationship with respect to said gripping surface thereon; 3. a gripper finger having a gripping surface for cooperation with said yarn gripping surface on said front wall, 4. means mounting said gripper finger on said front wall for rotation about a pivot axis wherein said means provides for variation in the spatial location of the pivot axis, and 5. a biasing means for urging said gripper finger into gripping contact
Claim 4
Dependent Claim
98 words
a yarn guide finger secured at one end to said shank portion and extending outwardly therefrom in the same direction as said front wall and located in underlying relationship with respect to said gripping surface thereon; 3. a gripper finger having a gripping surface for cooperation with said yarn gripping surface on said front wall, 4. means mounting said gripper finger on said front wall for rotation about a pivot axis wherein said means provides for variation in the spatial location of the pivot axis, and 5. a biasing means for urging said gripper finger into gripping contact
Claim 5
Dependent Claim
38 words
with said yarn gripping surface. 2. An improved carrier as defined in claim 1 wherein said biasing means is a coil spring having one end attached to said back wall and one end connected to said gripper finger.
Claim 6
Dependent Claim
36 words
An improved carrier as defined in claim 1 wherein said biasing means can be adjusted to change the force urging the gripping surface of said gripper finger toward the yarn gripping surface of said front wall.
Claim 7
Dependent Claim
28 words
An improved carrier as defined in claim 2 wherein means is provided to compress said spring in a direction substantially parallel to the radii of the coils thereof.
Claim 8
Dependent Claim
30 words
An improved carrier as defined in claim 4 wherein said spring compressing means comprises a claim member that is adjustable attached to said shank portion of said main body member.
Claim 9
Dependent Claim
94 words
An improved carrier as defined in claim 1 wherein said front wall and said gripper finger have means defining openings therethrough which are so located as to communicate, a pivot shaft extending through said openings, cam means mounted within said opening in said gripper finger for rotation about an axis parallel to but not coaxial with the axis of rotation of said pivot shaft and having means defining an opening to receive said shaft of rotation whereby rotation of said cam means will vary the spatial location of the axis of said pivot shaft.
Claim 10
Dependent Claim
66 words
An improved carrier as defined in claim 1 wherein said means mounting said gripper finger for rotation includes: 1. a pivot shaft extending outwardly from said front wall, 2. means including a cam having an opening for receiving said pivot shaft, said cam being mounted within said gripper finger for rotation about an axis parallel to but not concentric with the axis of said pivot shaft.
Claim 11
Dependent Claim
24 words
An improved carrier as defined in claim 7 wherein said cam has: 1. a main body and 2. an adjusting finger extending outwardly therefrom.
Claim 12
Dependent Claim
20 words
As improved carrier as defined in claim 7 wherein means are provided for locking said cam in a preselected position.
Claim 13
Dependent Claim
31 words
An improved carrier as defined in claim 7 wherein said biasing means is a coil spring having one end to said back wall and one end attached to said gripper finger.
Claim 14
Dependent Claim
18 words
An improved carrier as defined in claim 10 wherein the tension in said coil spring can be adjusted.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |