Patent US3902335A successfully refreshed from Google Patents.
US3902335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knitting machine
Assignee: Battelle Memorial Institute Inc
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Filing: 1974-04-22
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Granted: 1975-09-02
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Expires: 1994-04-22
Abstract
Abstract There is disclosed a knitting machine each of the knitting needles of which is provided with a hook and a latch capable of pivoting between two positions. In the first position the latch rests against the inside of the hook to close the hook, and in the second position the latch rests against a stop provided on the needle. In the second position, a spur provided on the latch projects beyond the shank of the needle. In order to open and close the hook during knitting, the machine is provided with two pushers for each needle, one pusher being arranged on one side of the needle to contact the spur of the latch to push the latch from the second position to the first position, and the other pusher being arranged on the other side of the needle to contact the latch to push the latch from the first position to the second position.
Inventors
- 👤 Gerard Durville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:45
CPC Classifications
D; D04; D04B; D04B35/00; D04B35/02; D04B35/04; D04B15/00; D04B15/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
307 words
A knitting machine comprising: a rotatable cylinder; a plUrality of vertical needles each of which comprises: a shank, a free shank end curved to form a hook, a latch pivotally mounted on said shank in the plane containing said shank and said hook and capable of being tilted between two end positions in the first of which end positions said latch is in contact with the inner surface of said hook to close said hook, a stop associated with said shank, said latch resting against said stop in the second of said two end positions, and at least one spur provided on said latch, said spur being arranged to project beyond said shank when said latch is in said second position; means for controlling alternating axial displacement of said needles to bring each needle from a first lower position to a second upper position, and vice versa, in order to carry out knitting; and means for controlling tilting of each of said latches between said two end positions, said means comprising: two pushers arranged on either side of each of said needles and capable of being displaced along paths contained in a plane parallel to the tilting plane of said latch and in the direction of said shank or in the opposite direction alternatively for each pusher, and means for entraining said pushers in an alternating movement and with such a stroke that, at least in an axial position of said needle, one of said pushers is capable of contacting said spur of said latch when said latch is in said second end position so as to push said latch into saif first end position, while the other of said pushers is capable of contacting said latch when said latch is in said first end position so as to push said latch into said second end position.
Claim 2
Dependent Claim
307 words
A knitting machine comprising: a rotatable cylinder; a plUrality of vertical needles each of which comprises: a shank, a free shank end curved to form a hook, a latch pivotally mounted on said shank in the plane containing said shank and said hook and capable of being tilted between two end positions in the first of which end positions said latch is in contact with the inner surface of said hook to close said hook, a stop associated with said shank, said latch resting against said stop in the second of said two end positions, and at least one spur provided on said latch, said spur being arranged to project beyond said shank when said latch is in said second position; means for controlling alternating axial displacement of said needles to bring each needle from a first lower position to a second upper position, and vice versa, in order to carry out knitting; and means for controlling tilting of each of said latches between said two end positions, said means comprising: two pushers arranged on either side of each of said needles and capable of being displaced along paths contained in a plane parallel to the tilting plane of said latch and in the direction of said shank or in the opposite direction alternatively for each pusher, and means for entraining said pushers in an alternating movement and with such a stroke that, at least in an axial position of said needle, one of said pushers is capable of contacting said spur of said latch when said latch is in said second end position so as to push said latch into saif first end position, while the other of said pushers is capable of contacting said latch when said latch is in said first end position so as to push said latch into said second end position.
Claim 3
Dependent Claim
61 words
A knitting machine as claimed in claim 1, wherein said means for controlling tilting of each of said latches comprises: a lowering plate associated with each needle, said two pushers being integral with said plate, and a guide groove situated in a plane parallel to the tilting plane of said latch, said plate being mounted to slide in said guide groove.
Claim 4
Dependent Claim
42 words
A knitting machine as claimed in claim 2, wherein the angle between said guide groove and the vertical path of said needle is an acute angle, whereby said guide groove slopes upwards and, at the same time, diverges from said vertical path.
Claim 5
Dependent Claim
91 words
A knitting machine as claimed in claim 2, wherein said means for controlling axial displacement of each of said needles comprises: a spring, one end of which is integral with said needle and the other end in which is integral with said cylinder, said spring tending to keep said needle in said first lower position, and a cam for displacement of said needle into said second upper position while arming said spring in such a way that said needle returns to said first lower position when said cam ceases to act.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |