Patent US3726113A successfully refreshed from Google Patents.
US3726113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stop motion apparatus for knitting machines
Assignee: Oliver Knitting Co
•
Filing: 1971-02-04
•
Granted: 1973-04-10
•
Expires: 1991-02-04
Abstract
Abstract An automatically resettable yarn actuated stop motion apparatus for use with multi-feed circular knitting machines comprising a pivotally mounted yarn arm for the yarn of each feed of the machine, each arm is latched in normal position so long as there is no excess tension in each of the running yarns being used by the machine, each of the yarn arms being unlatched and turned to down position by its yarn when there is excess tension therein, thereby to stop the machine, and air operated means to yieldingly return the yarn arms to normal latched position thereby to automatically reset the apparatus and to re-start the machine. The yarn arms are each journalled on a shaft to individually turn from the normal to the down position, and the yarn arms in down position are returned to normal position by turning movement of the shaft.
Inventors
- 👤 N Levin
- 👤 T Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:03
CPC Classifications
D; D04; D04B; D04B35/00; D04B35/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
268 words
In a knitting machine having a plurality of knitting stations, having a plurality of yarns fed to said machine at said knitting stations when said machine is in operation, and having mechanism to automatically stop the operation of said machine, said yarns being drawn off and running from individual cones thereof to such knitting stations during said machine operation, said yarns during surh running movement thereof generally being subjected to normal tension while individual ones of said yarns at times may be subjected to abnormal tension, the combination therewith of apparatus having a plurality of arms operatively related to said stop mechanism and to said plurality of yarns, said arms having yarn receiving apertures associated therewith and said yarns being permanently threaded through said apertures, said arms being individually movable between a first and a second position and being movable from said first toward said second position to operate said stop mechanism to automatically stop said machine operation, said apparatus having means to maintain said plurality of arms in their said first position in such manner that individual ones of said arms are moved from said first toward said second position by their related yarns when such yarns are subjected to a certain amount of said abnormal tension, such movement of such individUal ones of said arms serving to automatically stop said machine operation, and said apparatus having additional means commonly related to said plurality of arms and operable upon any of said individual ones of said arms which have been so moved from their said first position to automatically return the same to their said first position.
Claim 2
Dependent Claim
268 words
In a knitting machine having a plurality of knitting stations, having a plurality of yarns fed to said machine at said knitting stations when said machine is in operation, and having mechanism to automatically stop the operation of said machine, said yarns being drawn off and running from individual cones thereof to such knitting stations during said machine operation, said yarns during surh running movement thereof generally being subjected to normal tension while individual ones of said yarns at times may be subjected to abnormal tension, the combination therewith of apparatus having a plurality of arms operatively related to said stop mechanism and to said plurality of yarns, said arms having yarn receiving apertures associated therewith and said yarns being permanently threaded through said apertures, said arms being individually movable between a first and a second position and being movable from said first toward said second position to operate said stop mechanism to automatically stop said machine operation, said apparatus having means to maintain said plurality of arms in their said first position in such manner that individual ones of said arms are moved from said first toward said second position by their related yarns when such yarns are subjected to a certain amount of said abnormal tension, such movement of such individUal ones of said arms serving to automatically stop said machine operation, and said apparatus having additional means commonly related to said plurality of arms and operable upon any of said individual ones of said arms which have been so moved from their said first position to automatically return the same to their said first position.
Claim 3
Dependent Claim
67 words
The combination of claim 1 wherein said additional means is automatically operable, and wherein said plurality of arms is operatively related to said additional means in such manner that any of said arms which are so moved from their said first position toward their said second position are operative to cause said additional means to automatically return said any of said arms to their said first position.
Claim 4
Dependent Claim
75 words
The combination of claim 2 wherein said machine has mechanism to automatically start the operation of said machine, and wherein said start mechanism is operatively related to said plurality of arms and to said additional means in such manner as to automatically re-start said machine operation upon the return to their said first position by said additional means of all of those of said arms which had previously been moved from their said first position.
Claim 5
Dependent Claim
150 words
The combination of claim 1 wherein said first mentioned means includes a plurality of latches having latched and unlatched positions, said latches being operatively related to said plurality of arms in such manner that said latches in their said latched position maintain said arms in their said first position, said latches in their said latched position exerting a yieldable force upon said arms thereby to yieldingly maintain the latter in their said first position, those of said arms which are moved from their said first to their said second position by their related yarns are caused to overcome said yieldable force during such movement whereby their related latches assume their said unlatched position, and wherein said additional means acts upon those of said arms which have been so moved to return the same to their said first position thereby to cause their related latches to assume their said latched position.
Claim 6
Dependent Claim
88 words
The combination of claim 4 wherein said apparatus includes a lengthwise extending shaft, wherein said plurality of arms are rotatably mounted upon and extend crosswise of said shaft, wherein said plurality of latches are lengthwise aligned in spaced parallel relation to said shaft, wherein said arms are rockable about said shaft between their said first and second positions, wherein said latches are movable between their said latched and unlatched positions, and wherein said arms in their said first position yieldingly maintain said latches in their said latched position.
Claim 7
Dependent Claim
50 words
The combination of claim 5 wherein said shaft is angularly movable between two positions thereof, wherein said shaft is operatively related to said plurality of arms, and wherein angular movement of said shaft to one of its said positions is adapted to move said arms to their said first position.
Claim 8
Dependent Claim
27 words
The combination of claim 6 wherein pressurized air is operatively related to said shaft to angularly move the same to at least one of its said positions.
Claim 9
Dependent Claim
62 words
The combination of claim 1 wherein said additional means uses a yieldable force to return said any of said arms to their said first position, and wherein the amount of said yieldable force so used is sufficient to subject the yarns associated with any of said arms to an amount of tension in excess of said certain amount of said abnormal tension.
Claim 10
Dependent Claim
34 words
The combination of claim 3 wherein a yarn creel is associated with said knitting machine, wherein said yarn cones are disposed on said creel, and wherein said apparatus is also disposed on said creel.
Claim 11
Dependent Claim
60 words
The combination of claim 3 wherein said apparatus includes an electrical circuit, wherein said latches are operatively related to said circuit, wherein said electrical circuit is in opened non-operative condition when said latches are in their said latched position, and wherein saId electrical circuit is in closed operative condition when any of said latches are in their said unlatched position.
References Cited (Backward Citations)
US2215220A
Cited
US2271902A
Cited
US2383838A
Cited
US2654238A
Cited
US2791820A
Cited
US2700881A
Cited
US3571680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |