US3596685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cutting and retaining the weft threads in shuttleless looms
Assignee: Individual
•
Filing: 1969-07-03
•
Granted: 1971-08-03
•
Expires: 1989-07-03
Abstract
Abstract Device for cutting and holding weft threads in a shuttleless loom comprising two forklike plates, each with a groove for holding the weft thread, each groove having a lower edge defined by a cutting edge, two lever blades applied in articulation to said two plates and which present one of their ends bent in the shape of a hook, the upper inside edge of each hook being provided with a cutting edge, and drive means for imparting pivotal movement to said lever blades relative to said plates whereby weft threads which are disposed between the cutting edge in the grooves and the cutting edge on the hooks are cut by shearing action.
Inventors
- 👤 Jose Bassa Bassart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:12
CPC Classifications
D; D03; D03D; D03D39/00; D03D39/16; D03D49/00; D03D49/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
Device for cutting and holding weft threads in a shuttleless loom comprising two forklike plates, each with a groove for holding the weft thread, each groove having a lower edge defined by a cutting edge, two lever blades applied in articulation to said two plates and which present one of their ends bent in the shape of a hook, the upper inside edge of each hook being provided with a cutting edge, and drive means for imparting pivotal movement to said lever blades relative to said plates whereby weft threads which are disposed between the cutting edge in the grooves and the cutting edge on the hooks are cut by shearing action.
Claim 2
Dependent Claim
112 words
Device for cutting and holding weft threads in a shuttleless loom comprising two forklike plates, each with a groove for holding the weft thread, each groove having a lower edge defined by a cutting edge, two lever blades applied in articulation to said two plates and which present one of their ends bent in the shape of a hook, the upper inside edge of each hook being provided with a cutting edge, and drive means for imparting pivotal movement to said lever blades relative to said plates whereby weft threads which are disposed between the cutting edge in the grooves and the cutting edge on the hooks are cut by shearing action.
Claim 3
Dependent Claim
38 words
A device for cutting weft threads as in claim 1 including a helicoidal compression spring disposed at the point of articulation between each plate and each lever blade, said spring pressing the lever blade against the respective plate.
Claim 4
Dependent Claim
66 words
A device for cutting weft threads as in claim 1 including a linklike piece pivotally connected between the ends of said lever blade which are opposite the hooked ends thereof, a drive rod having one end connected to said linklike piece and another end connected to a trunnion which is solid with a lever arm, and a cam for imparting pivotal motion to said lever arm.
Claim 5
Dependent Claim
43 words
A device for cutting weft threads as in claim 1 wherein said lever arm carries a roller which engages said cam, said device further including spring means biasing said lever arm in a direction to maintain said roller in engagement with said cam.
Claim 6
Dependent Claim
53 words
A device for cutting weft threads as in claim 1 including a plate holder, means for adjustably mounting said plates in a variety of horizontal positions relative to said plate holder, a holder support, and means for adjustably mounting said plate holder in a variety of vertical positions relative to said holder support.
Claim 7
Dependent Claim
33 words
A device for cutting weft threads as in claim 5 including a fixed assembly support having an upper portion defining a horizontal slide, said holder support being adjustably mounted on said horizontal slide.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |