US3771571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronized reading devices for looms
Assignee: Individual
•
Filing: 1972-04-07
•
Granted: 1973-11-13
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Expires: 1992-04-07
Abstract
Abstract An improved synchronized reading device for a loom, particularly a dobby machine, for reading a pattern having at least two rows of perforations thereon disposed according to a predetermined design. The reading device includes a set of four feeler needles disposed in parallel groups of two with each group positioned for coaction with one of the rows of perforations formed in the pattern. Each feeler needle is supported on a cranked lever pivotally supported on a transverse shaft which extends longitudinally of the dobby machine. Each lever is also articulated to a substantially horizontally extending needle which in turn controls a vertical oscillatory lever. A pair of said oscillatory levers corresponding to the needles of each group are pivotally supported on a lever arm, with adjacent pairs of lever arms being pivotally connected to tie rods which are connected to retaining hooks for controlling the rocker of the dobby machine.
Inventors
- 👤 S Xaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:54
CPC Classifications
D; D03; D03C; D03C1/00; D03C1/14; D03C1/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
Improvements in a synchronized reading device for a dobby machine with a pattern that has at least two rows of perforations throughout its length, comprising: a set of four feeler needles for the pattern disposed in first and second groups of two needles in parallel planes in the longitudinal direction of the dobby machine, said planes corresponding to the two rows of perforations of the pattern; two transverse shafts of the dobby machine, and first and second groups of cranked levers respectively connected to the first and second groups of feeler needles, one cranked lever of each group being pivotally supported on each said transverse shaft; a substantially horizontal needle articulated at one extremity to the free end of each cranked lever, and guided at its other extremity; a vertically oscillatory lever connected to each horizontal needle; a lever arm for each group of two oscillatory levers displosed according to two transverse planes of the dobby machine on which the lever arms oscillate, the lever arms being freely supported on one transverse shaft of the dobby machine; and a tie-rod articulated to the free extremity of each lever arm, each tie-rod having its extremity connected to retaining hook of the rocker of the dobby machine.
Claim 2
Dependent Claim
205 words
Improvements in a synchronized reading device for a dobby machine with a pattern that has at least two rows of perforations throughout its length, comprising: a set of four feeler needles for the pattern disposed in first and second groups of two needles in parallel planes in the longitudinal direction of the dobby machine, said planes corresponding to the two rows of perforations of the pattern; two transverse shafts of the dobby machine, and first and second groups of cranked levers respectively connected to the first and second groups of feeler needles, one cranked lever of each group being pivotally supported on each said transverse shaft; a substantially horizontal needle articulated at one extremity to the free end of each cranked lever, and guided at its other extremity; a vertically oscillatory lever connected to each horizontal needle; a lever arm for each group of two oscillatory levers displosed according to two transverse planes of the dobby machine on which the lever arms oscillate, the lever arms being freely supported on one transverse shaft of the dobby machine; and a tie-rod articulated to the free extremity of each lever arm, each tie-rod having its extremity connected to retaining hook of the rocker of the dobby machine.
Claim 3
Dependent Claim
40 words
Improvements according to claim 1, in which the cranked levers of one set of feeler needles are shorter and have a heel at their intermediate part, and those of the other set of feeler needles are longer with no heel.
Claim 4
Dependent Claim
58 words
Improvements according to claim 2, characterized by two sets of two stop bars supporting the heels of the cranked levers of said one set and the extremities of the cranked levers of said other set, and said sets of stop bars being provided with an inverse rise and fall movement for actuation of the groups of feeler needles.
Claim 5
Dependent Claim
53 words
Improvements according to claim 1, characterized by the provision of two knives in the dobby machine with rise and fall movements which are opposite one another, the knives holding the free ends of the oscillatory levers to raise the corresponding lever arm and actuate the retaining hook of the rocker through its tie-rod.
Claim 6
Dependent Claim
44 words
Improvements according to claim 1, characterized by the lever arms being disposed alternatively, some with the tie-rod pointing upwardly and the others with the tie-rod pointing downwardly, corresponding to the anchorage of the upper hook and the lower hook respectively of the same rocker.
References Cited (Backward Citations)
US3390705A
Cited
US3378038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |