US3719211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn holding device for a picking element of a loom
Assignee: Individual
•
Filing: 1971-05-24
•
Granted: 1973-03-06
•
Expires: 1991-05-24
Abstract
Abstract A yarn gripping device on a weft-inserting element of a loom is operable to pick weft yarn from a stationary weft yarn supply arranged outside the loom. The weft-inserting element has at least one cylindrical tubular end part with a running plane surface which is inclined at the front end for the weft yarn. A cylindrical bar is located in a bore of the cylindrical end part which terminates at the inclined running surface. The bar protrudes beyond the running plane surface and there is a radial clearance between the bar and the bore on all sides which is at least as great as the yarn thickness. The weft yarn forms a loop around the bar as it runs up the inclined running plane surface to form a loop which increases as more of the weft yarn is wrapped around the bar due to the running up on the inclined surface. The bar is advantageously resiliently mounted within the cylindrical tubular end part so that it may be displaced in a radial direction. The weft-inserting element may take the form of a loom shuttle having inclined running surfaces at each end and with a bar projecting through the bore which terminates at the inclined running plane surface at each end.
Inventors
- 👤 A Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:36
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/20; D03D47/23
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
A weft yarn holding device for a weft-insertion element of a loom which includes a stationary weft yarn supply arranged outside the loom from which weft yarn is picked, comprising at least one end part with an inclined running plane surface at its front end over which the weft yarn is adapted to run, said end part having a bore terminating in said inclined plane surface; a bar extending through the bore of said inclined plane surface and protruding outwardly past the inclined plane surface and having a radial clearance in the bore on all sides at least as great as the yarn thickness; the weft yarn being displaceable during the movement of the picking element in the direction of engagement with the yarn to cause it to run up along the running surface and to form an increasing loop around the bar and be retained between the bar and the bore of the picking element.
Claim 2
Dependent Claim
156 words
A weft yarn holding device for a weft-insertion element of a loom which includes a stationary weft yarn supply arranged outside the loom from which weft yarn is picked, comprising at least one end part with an inclined running plane surface at its front end over which the weft yarn is adapted to run, said end part having a bore terminating in said inclined plane surface; a bar extending through the bore of said inclined plane surface and protruding outwardly past the inclined plane surface and having a radial clearance in the bore on all sides at least as great as the yarn thickness; the weft yarn being displaceable during the movement of the picking element in the direction of engagement with the yarn to cause it to run up along the running surface and to form an increasing loop around the bar and be retained between the bar and the bore of the picking element.
Claim 3
Dependent Claim
156 words
A weft yarn holding device for a weft-insertion element of a loom which includes a stationary weft yarn supply arranged outside the loom from which weft yarn is picked, comprising at least one end part with an inclined running plane surface at its front end over which the weft yarn is adapted to run, said end part having a bore terminating in said inclined plane surface; a bar extending through the bore of said inclined plane surface and protruding outwardly past the inclined plane surface and having a radial clearance in the bore on all sides at least as great as the yarn thickness; the weft yarn being displaceable during the movement of the picking element in the direction of engagement with the yarn to cause it to run up along the running surface and to form an increasing loop around the bar and be retained between the bar and the bore of the picking element.
Claim 4
Dependent Claim
156 words
A weft yarn holding device for a weft-insertion element of a loom which includes a stationary weft yarn supply arranged outside the loom from which weft yarn is picked, comprising at least one end part with an inclined running plane surface at its front end over which the weft yarn is adapted to run, said end part having a bore terminating in said inclined plane surface; a bar extending through the bore of said inclined plane surface and protruding outwardly past the inclined plane surface and having a radial clearance in the bore on all sides at least as great as the yarn thickness; the weft yarn being displaceable during the movement of the picking element in the direction of engagement with the yarn to cause it to run up along the running surface and to form an increasing loop around the bar and be retained between the bar and the bore of the picking element.
Claim 5
Dependent Claim
19 words
A weft yarn holding device, according to claim 1, wherein said bar is resiliently mounted on said end part.
Claim 6
Dependent Claim
54 words
A weft yarn holding device, according to claim 1, wherein said bar can move longitudinally in said end part and includes an annular undercut part in which the yarn is engageable which reduces the looping size of the yarn when the bar is positioned to cause engagement of the yarn in the undercut portion.
Claim 7
Dependent Claim
113 words
A weft yarn holding device, according to claim 1, wherein said weft-inserting element comprises a shuttle of a loom having at least one end with an inclined running surface said bar comprising a straight bar member projecting outwardly beyond the running surface from the bore of said tubular element, and means biasing said bar in a direction toward extension outwardly beyond the running surface, said bar being movable by deflection inwardly and including an annular undercut surface which is located beyond the running surface when said bar projects outwardly by a maximum amount and which is moved within the bore to come into engagement with the yarn when said bar is deflected inwardly.
References Cited (Backward Citations)
US2878979A
Cited
US3384126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |