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US4421143A
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Inductive projectile sensor on a gripper shuttle weaving machine
Assignee: Loepfe AG Gebrueder
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Filing: 1981-12-04
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Granted: 1983-12-20
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Expires: 2001-12-04
Abstract
Abstract Electronic control device on a gripper shuttle or projectile weaving machine or loom containing a lathe beam and thereto fixed teeth for guiding the gripper shuttle or projectile which inserts the weft or filling thread into the weaving shed, and a thread brake located at the picking side of the loom. The electronic control device comprises a sensor arranged on the lathe beam at least at one of the guide teeth and which furnishes an electrical sensor signal when the projectile passes by, an evaluation circuit connected to the sensor, and an electromagnetic device operatively connected to the evaluation circuit such as to actuate the thread brake upon appearance of an electrical sensor signal.
Inventors
- 👤 Erich Weidmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:24
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
An electronic control device for a gripper shuttle weaving machine containing a lathe beam and thereto fixed guide teeth for guiding the gripper shuttle which inserts the weft thread into the weaving shed, and a thread brake located at the picking side of the weaving machine, wherein the electronic control device comprises: a sensor arranged at least at one of the guide teeth for furnishing an electrical sensor signal indicative of the passage of the gripper shuttle; an evaluation circuit connected to the sensor; an adjustable delay circuit operatively interconnected between the sensor and the evaluation circuit for delaying the electrical sensor signal; and an electromagnetic device operatively connected to the evaluation circuit for actuating the thread brake upon appearance of an electrical sensor signal.
Claim 2
Dependent Claim
125 words
An electronic control device for a gripper shuttle weaving machine containing a lathe beam and thereto fixed guide teeth for guiding the gripper shuttle which inserts the weft thread into the weaving shed, and a thread brake located at the picking side of the weaving machine, wherein the electronic control device comprises: a sensor arranged at least at one of the guide teeth for furnishing an electrical sensor signal indicative of the passage of the gripper shuttle; an evaluation circuit connected to the sensor; an adjustable delay circuit operatively interconnected between the sensor and the evaluation circuit for delaying the electrical sensor signal; and an electromagnetic device operatively connected to the evaluation circuit for actuating the thread brake upon appearance of an electrical sensor signal.
Claim 3
Dependent Claim
29 words
The electronic control device as claimed in claim 1 wherein: the sensor is constructed as an inductive sensor comprising an induction coil encircling at least said one guide tooth.
Claim 4
Dependent Claim
67 words
The electronic control device as defined in claim 2, wherein: said inductive sensor including said coil are releasably mounted at said at least one guide tooth to enable said inductive sensor to be shifted and remounted at any other selected one of said guide teeth, in order to accommodate the position of the sensor to the width of a fabric which is woven at the weaving machine.
Claim 5
Dependent Claim
29 words
The electronic control device as defined in claim 2, wherein: said guide tooth piercingly extends through said induction coil and simultaneously serves as a core for the inductive sensor.
Claim 6
Dependent Claim
125 words
An electronic control device for a gripper shuttle weaving machine containing a lathe beam and thereto fixed guide teeth for guiding the gripper shuttle which inserts the weft thread into the weaving shed, and a thread brake located at the picking side of the weaving machine, wherein the electronic control device comprises: a sensor arranged at least at one of the guide teeth for furnishing an electrical sensor signal indicative of the passage of the gripper shuttle; said sensor being constructed as an inductive sensor comprising an induction coil encircling at least said one guide tooth; an evaluation circuit connected to the sensor; and an electromagnetic device operatively connected to the evaluation circuit for actuating the thread brake upon appearance of an electrical sensor signal.
Claim 7
Dependent Claim
125 words
An electronic control device for a gripper shuttle weaving machine containing a lathe beam and thereto fixed guide teeth for guiding the gripper shuttle which inserts the weft thread into the weaving shed, and a thread brake located at the picking side of the weaving machine, wherein the electronic control device comprises: a sensor arranged at least at one of the guide teeth for furnishing an electrical sensor signal indicative of the passage of the gripper shuttle; said sensor being constructed as an inductive sensor comprising an induction coil encircling at least said one guide tooth; an evaluation circuit connected to the sensor; and an electromagnetic device operatively connected to the evaluation circuit for actuating the thread brake upon appearance of an electrical sensor signal.
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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |