US3681942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding and tensioning filling threads to a warp knitting machine
Assignee: TRAVIS MILLS CORP
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Filing: 1971-04-16
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Granted: 1972-08-08
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Expires: 1991-04-16
Abstract
Abstract First and second spaced apart conveyors, extending toward the knitting instrumentalities of a knitting machine, each carry a plurality of thread clamping means. Guide means bring filling threads from filling thread supplies to the first conveyor where they are clamped. The guide means then moves to the second conveyor to pull filling threads from the supplies and draw them between the conveyors, the filling threads being clamped in the second conveyor. At some point during movement of the guide means, locking means lock the filling threads against further removal from the supplies so as to provide a predetermined tension to the filling threads which become clamped between the conveyors. Means may be provided for tensioning the filling threads as they are withdrawn from their supplies.
Inventors
- 👤 Rudolph G Bassist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:55
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
212 words
Apparatus for feeding filling threads to a warp knitting machine comprising first and second spaced apart conveyor means extending toward the knitting instrumentalities of the machine, a pluRality of thread clamping means carried by and movable with each of said conveyor means, a plurality of filling thread supplies, guide means movable independently of said thread supplies for bringing a plurality of filling threads from said supplies to said first conveyor means where they are simultaneously clamped by said clamping means of said first conveyor means, said guide means moving from said first conveyor means to said second conveyor means to draw filling threads, pulled from said supplies, between said conveyors, and said guide means bringing the filling threads to said second conveyor means where they are simultaneously clamped by said clamping means of said second conveyor means, and means for locking the filling threads against further withdrawal from said supplies at selected positions of said guide means during movement of the latter from the first to the second conveyor means, so as to selectively adjust the tension in the filling threads which becomes clamped between said conveyors, said locking means being outside the path of movement of said guide means as the latter moves from said first to said second conveyor means.
Claim 2
Dependent Claim
212 words
Apparatus for feeding filling threads to a warp knitting machine comprising first and second spaced apart conveyor means extending toward the knitting instrumentalities of the machine, a pluRality of thread clamping means carried by and movable with each of said conveyor means, a plurality of filling thread supplies, guide means movable independently of said thread supplies for bringing a plurality of filling threads from said supplies to said first conveyor means where they are simultaneously clamped by said clamping means of said first conveyor means, said guide means moving from said first conveyor means to said second conveyor means to draw filling threads, pulled from said supplies, between said conveyors, and said guide means bringing the filling threads to said second conveyor means where they are simultaneously clamped by said clamping means of said second conveyor means, and means for locking the filling threads against further withdrawal from said supplies at selected positions of said guide means during movement of the latter from the first to the second conveyor means, so as to selectively adjust the tension in the filling threads which becomes clamped between said conveyors, said locking means being outside the path of movement of said guide means as the latter moves from said first to said second conveyor means.
Claim 3
Dependent Claim
33 words
Apparatus as defined in claim 1 including means for applying a predetermined tension to the filling threads as they are withdrawn from said supplies during movement of said guide means between said conveyors.
Claim 4
Dependent Claim
23 words
Apparatus as defined in claim 1 including means responsive to movement of said guide means for controlling the operation of said locking means.
Claim 5
Dependent Claim
39 words
Apparatus as defined in claim 1 including electrical means for operating said locking means, and means in electrical circuit with said electrical means and responsive to movement of said guide means for controlling the operation of said electrical means.
Claim 6
Dependent Claim
29 words
Apparatus as defined in claim 4 wherein said means in electrical circuit with said electrical means is a switch arranged along the path of movement of said guide means.
Claim 7
Dependent Claim
18 words
Apparatus as defined in claim 5 including an actuator carried by said guide means for operating said switch.
Claim 8
Dependent Claim
40 words
Apparatus as defined in claim 4 wherein said means in electrical circuit with said electrical means is adjustable along the path of movement of said guide means, and means for maintaining said adjustable means in any desired position of adjustment.
Claim 9
Dependent Claim
38 words
Apparatus as defined in claim 1 including rotatable means about which the filling threads are wrapped between said supplies and said guide means, and wherein said locking means includes means for locking said rotatable means against further rotation.
Claim 10
Dependent Claim
39 words
Apparatus as defined in claim 8 including means for adjusting the speed relationship between said rotatable means and said guide means for applying a selected predetermined tension to the filling threads as said guide means moves between said conveyors.
Claim 11
Dependent Claim
54 words
Apparatus as defined in claim 8 wherein said locking means includes an electric clutch and brake arrangement for controlling rotation of said rotatable means, and including means in electrical circuit with said clutch and brake arrangement and responsive to movement of said guide means for controlling the operation of said clutch and brake arrangement.
Claim 12
Dependent Claim
39 words
Apparatus as defined in claim 1 wherein said locking means includes an anvil and clamping member between which a filling thread passes, and means for moving said anvil and clamping member into engagement to lock the thread between them.
Claim 13
Dependent Claim
35 words
Apparatus as defined in claim 11 including means spaced from said anvil and clamping member for applying a predetermined tension to a filling thread moving between said anvil and clamping head to said guide means.
Claim 14
Dependent Claim
45 words
Apparatus as defined in claim 11 wherein said means for moving said anvil and clamping member into engagement includes a solenoid, and including means in electrical circuit with said solenoid and responsive to movement of said guide means for controlling the operation of said solenoid.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |