Patent US3881524A successfully refreshed from Google Patents.
US3881524A
Expired / Lapsed
US
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Shuttle return apparatus
Assignee: Sulzer AG
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Filing: 1973-09-10
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Granted: 1975-05-06
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Expires: 1993-09-10
Abstract
Abstract An endless belt or chain having shuttle carrying or propelling elements attached thereto extends across a loom, for example of gripper shuttle type, to return the shuttles from the catching to the picking side of the loom. Braking means are provided to retard the return motion of the shuttles, preventing oscillation or chattering thereof on their arrival at the picking side.
Inventors
- 👤 Hans Bracher
- 👤 Heinz Baumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:21
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
Shuttle return apparatus for a loom having picking and catching mechanisms on opposite sides of a shed-forming mechanism, said return apparatus comprising an endless belt adapted to extend from the catching to the picking side of the loom, means defining a shuttle guide path along one run of the belt, plural means arranged on the belt to propel shuttles along said guide path, means to retard the motion of shuttles along said path, and a shutter retractably extensible across said guide path between said picking mechanism and retardiNg means.
Claim 2
Dependent Claim
89 words
Shuttle return apparatus for a loom having picking and catching mechanisms on opposite sides of a shed-forming mechanism, said return apparatus comprising an endless belt adapted to extend from the catching to the picking side of the loom, means defining a shuttle guide path along one run of the belt, plural means arranged on the belt to propel shuttles along said guide path, means to retard the motion of shuttles along said path, and a shutter retractably extensible across said guide path between said picking mechanism and retardiNg means.
Claim 3
Dependent Claim
32 words
Apparatus according to claim 1 wherein said retarding means comprise a shoe and resilient means stressing the shoe into frictional engagement with shuttles carried along said guide path by said propelling means.
Claim 4
Dependent Claim
21 words
Apparatus according to claim 1 wherein said retarding means include a stationary magnet whose field extends crosswise of said guide path.
Claim 5
Dependent Claim
41 words
Apparatus according to claim 3 wherein said magnet is an electro-magnet, said apparatus further including a photo-cell connected in circuit with said electro-magnet and positioned to be actuated by the passage of shuttles along said guide path to energize said electro-magnet.
Claim 6
Dependent Claim
25 words
Apparatus according to claim 1 wherein said retarding means includes means to lubricate shuttles moving in engagement with said retarding means along said guide path.
Claim 7
Dependent Claim
26 words
Apparatus according to claim 1 wherein the retarding means include a strip spring-stressed toward the shuttles over a portion of their passage along said guide path.
Claim 8
Dependent Claim
31 words
Apparatus according to claim 1 wherein said guide path-defining means comprise a rail, said rail including strip-like extensions on both sides of said guide path for frictional engagement with the shuttles.
Claim 9
Dependent Claim
20 words
Apparatus according to claim 7 wherein said rail is made of synthetic material and is removably mounted in an enclosure.
Claim 10
Dependent Claim
60 words
Apparatus according to claim 1 wherein said retarding means comprise a member extending into said guide path at a surface along which said member is subject to displacement from said guide path by cam action upon engagement of said member with shuttles moving along said guide path for one direction only of motion of the shuttles along said guide path.
Claim 11
Dependent Claim
17 words
Apparatus according to claim 9 wherein said member is mounted for arcuate motion about a fixed axis.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |