Patent US1165440A successfully refreshed from Google Patents.
Patent US3780539A successfully refreshed from Google Patents.
US3780539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle actuating camming for circular knitting machines
Assignee: MONARCH MANUFACTURING CORP
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Filing: 1972-05-16
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Granted: 1973-12-25
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Expires: 1992-05-16
Abstract
Abstract In a circular knitting machine wherein multi-butt needles are controlled by camming defining a plurality of raceways, the height of cam sections and the length of the needles is shortened by the provision of preliminary raise cams which are extended to also serve as guard cams and prevent the accidental descent of needles between vertical arrays of rotatably adjustable cams. Each of the adjustable cams may be positively locked in a position to permit needles to welt or in positions to raise needles to a knit or a tuck level from which they may be lowered by a main stitch cam engageable with the same needle butts as the preliminary raise and guard cams. Tilting of the needles in a vertical plane perpendicular to the camming is prevented by a needle engageable member at each feed.
Inventors
- 👤 L Mishcon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:17
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/32; D04B15/66; D04B15/82
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
167 words
In a multi-feed circular knitting machine, the combination comprising multi-butt cylinder needles and camming for each of a plurality of feeds to actuate the cylinder needles, said camming including a preliminary raise cam extending across the camming at each of said feeds to contact one butt of every one of the needles and raise said needles to a predetermined less than latch-clear and higher than welt position height and prevent the descent of any of said needles below said height, a plurality of vertically spaced rotatable adjustable cams each cooperable with a different needle butt which is other than said one butt, each adjustable cam being rotatable to one position to raise needles an additional amount to tuck height, to another position to raise needles an additional amount to a latch-clear position, and to still another position permitting needles to welt, and a stitch cam disposed to contact the said one butt of the needles and lower said needles to a cast-off position below said predetermined height.
Claim 2
Dependent Claim
167 words
In a multi-feed circular knitting machine, the combination comprising multi-butt cylinder needles and camming for each of a plurality of feeds to actuate the cylinder needles, said camming including a preliminary raise cam extending across the camming at each of said feeds to contact one butt of every one of the needles and raise said needles to a predetermined less than latch-clear and higher than welt position height and prevent the descent of any of said needles below said height, a plurality of vertically spaced rotatable adjustable cams each cooperable with a different needle butt which is other than said one butt, each adjustable cam being rotatable to one position to raise needles an additional amount to tuck height, to another position to raise needles an additional amount to a latch-clear position, and to still another position permitting needles to welt, and a stitch cam disposed to contact the said one butt of the needles and lower said needles to a cast-off position below said predetermined height.
Claim 3
Dependent Claim
143 words
In a multi-feed circular knitting machine, the combination comprising a multi-butt cylinder needle and camming for each of a plurality of feeds to actuate the cylinder needle, said camming including a preliminary raise cam extending across the camming at each of said feeds to contact one butt of every one of the needles and raise said needle from a cast-off position through part of the vertical distance between the cast-off and tuck height of the needle to a predetermined higher than welt position height and prevent the descent of any of said needles below said height, at least one rotatable adjustable cam to contact another butt of said needle and raise said needle an additional amount to at least tuck height, and a stitch cam disposed to contact the said one butt of the needle and lower said needle to a cast-off position.
Claim 4
Dependent Claim
143 words
In a multi-feed circular knitting machine, the combination comprising a multi-butt cylinder needle and camming for each of a plurality of feeds to actuate the cylinder needle, said camming including a preliminary raise cam extending across the camming at each of said feeds to contact one butt of every one of the needles and raise said needle from a cast-off position through part of the vertical distance between the cast-off and tuck height of the needle to a predetermined higher than welt position height and prevent the descent of any of said needles below said height, at least one rotatable adjustable cam to contact another butt of said needle and raise said needle an additional amount to at least tuck height, and a stitch cam disposed to contact the said one butt of the needle and lower said needle to a cast-off position.
Claim 5
Dependent Claim
33 words
The combination of claim 2 wherein the adjustable cam is rotatable to one position to raise the needle to tuck height and to another position to raise the needle to a latch-clear position.
Claim 6
Dependent Claim
64 words
The combination of claim 3 wherein the adjustable cam in addition to being positionable in the one position to raise the needle to tuck height and in another position to raise the needle to a latch-clear position, is also positionable in a position permitting the needle to welt, and said combination includes means for locking the adjustable cam in each of the said positions.
Claim 7
Dependent Claim
26 words
The combination of claim 2 including a wing cam disposed to define a raceway for directing said one butt of the needle to a welt position.
Claim 8
Dependent Claim
28 words
The combination of claim 5 wherein the preliminary raise cam extends under the stitch cam, and the wing cam is between the stitch cam and preliminary raise cam.
Claim 9
Dependent Claim
36 words
The combination of claim 2 including a laterally extending member located a substantial distance below the preliminary raise cam and engageable with the needle shank to prevent the needle from pivoting on the preliminary raise cam.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |