GB1353744A - Weft detectors for looms - Google Patents
Weft detectors for loomsInfo
- Publication number
- GB1353744A GB1353744A GB977970A GB1353744DA GB1353744A GB 1353744 A GB1353744 A GB 1353744A GB 977970 A GB977970 A GB 977970A GB 1353744D A GB1353744D A GB 1353744DA GB 1353744 A GB1353744 A GB 1353744A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weft
- light
- phototransistor
- pin
- feeler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/18—Automatic stop motions
- D03D51/34—Weft stop motions
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
1353744 Weft bobbin feelers for looms NORTHROP WEAVING MACHINERY Ltd 19 April 1971 [28 Feb 1970] 9779/70 Heading DIE [Also in Division G1] A photo-electric weft bobbin feeler has a light source 14 and a lens system 18 which directs light onto the surface of a pin 30, reflected light being focussed by a lens system 34 onto a phototransistor P, and the lenssystems 18 and 34 being inclined to each other. The signals from the phototransistor P are amplified and arranged to trigger a monostable multivibrator, (B), Fig. 3, (not shown), the pulses of which are fed to a detector circuit (C) which produces a signal to initiate weft replenishment or to stop the loom when the weft is exhausted. In one embodiment, a light weft is used, and the pin is dark, and each time the shuttle arrives in front of the feeler a pulse is produced in the phototransistor P which triggers the multivibrator. The detector C is then arranged to produce an output in the absence of a pulse from the multivabrator. The feeler 10 is mounted on a fixed part of the loom, such as the breast beam so that the pin is scanned by the light beam when the sley is at front dead centre.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB977970 | 1970-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1353744A true GB1353744A (en) | 1974-05-22 |
Family
ID=9878606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB977970A Expired GB1353744A (en) | 1970-02-28 | 1970-02-28 | Weft detectors for looms |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE764799A (en) |
| CH (1) | CH544167A (en) |
| GB (1) | GB1353744A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1092946B (en) * | 1978-03-01 | 1985-07-12 | Nuovo Pignone Spa | SYSTEM FOR AUTOMATIC SUPPLIES AND WITHOUT NEVER STOPPING THE MACHINE IN CONVEYORS WITH THE WEAVING WIRE NECESSARY IN CONTINUOUS TEXTILE FRAMES |
| CN102587028A (en) * | 2011-01-12 | 2012-07-18 | 游青榆 | Method for shutdown and detection of circular knitting machine before exhaustion of weft yarn |
-
1970
- 1970-02-28 GB GB977970A patent/GB1353744A/en not_active Expired
-
1971
- 1971-03-12 CH CH364471A patent/CH544167A/en not_active IP Right Cessation
- 1971-03-25 BE BE764799A patent/BE764799A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE764799A (en) | 1971-08-16 |
| CH544167A (en) | 1973-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |