US3792818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread reserve-forming devices
Assignee: Oerlikon Barmag AG
•
Filing: 1971-08-27
•
Granted: 1974-02-19
•
Expires: 1991-08-27
Abstract
Abstract Thread reserve-forming devices adapted to provide automatically on a winding tube a thread reserve winding next to the main thread winding. The devices embody thread deflecting rods and pivotable, thread-restraining members to temporarily hold the thread for thread reserve formation at the beginning of the winding operation.
Inventors
- 👤 K Bauer
- 👤 P Illg
- 👤 S Putsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:58
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/28; B65H54/34; B65H54/343; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
372 words
A device for formation of a thread reserve between a thread catching groove in a winding carrier and the zone on said carrier for the winding itself which comprises a self-threading reciprocable traversing device adapted to reciprocate the thread running therethrough to distribute it on said winding carrier as the latter rotates about a horizontal axis of rotation to form the winding, and a thread deflecting assembly in the vicinity of said thread catching groove positioned to temporarily deflect the thread path out of the range of said self-threading traversing device, said assembly embodying a pivotable rocker arm having a thread-contacting edge parallel to the horizontal axis of rotation of said winding carrier when said rocker arm is in rest position, a lug on said arm projecting away from said carrier at the end of said rocker arm remote from said groove, means pivoTally mounting said arm for free pivotal movement about an axis of rotation positioned in a plane which is radial to the horizontal axis of rotation of said carrier, said axis of rotation of said arm being oriented in said plane either vertically or vertically diagonally upwardly and outwardly, away from said carrier, stop means to stop said rocker arm in said rest position, and yieldable, countermoment means urging said freely pivotable rocker arm toward said rest position, against said stop means and also pivotally returning said arm to said rest position upon pivotal movement of said rocker arm by said thread followed by moving of the thread off the rocker arm, said pivotal movement by said thread occuring when running thread inserted in said catching groove and caught therein runs in a deflected path over said edge of said rocker arm and moves therealong toward said lug until the force of said thread causes said rocker arm to pivot with swinging of its lug-bearing end toward said winding carrier, the thread path being so deflected out of the range of said traversing device until the inertia of said arm and said yieldable means is overcome by the torque applied by the force of said thread against said edge as it moves toward said lug and then off said rocker arm when the latter is pivoted by said torque.
Claim 2
Independent Claim
372 words
A device for formation of a thread reserve between a thread catching groove in a winding carrier and the zone on said carrier for the winding itself which comprises a self-threading reciprocable traversing device adapted to reciprocate the thread running therethrough to distribute it on said winding carrier as the latter rotates about a horizontal axis of rotation to form the winding, and a thread deflecting assembly in the vicinity of said thread catching groove positioned to temporarily deflect the thread path out of the range of said self-threading traversing device, said assembly embodying a pivotable rocker arm having a thread-contacting edge parallel to the horizontal axis of rotation of said winding carrier when said rocker arm is in rest position, a lug on said arm projecting away from said carrier at the end of said rocker arm remote from said groove, means pivoTally mounting said arm for free pivotal movement about an axis of rotation positioned in a plane which is radial to the horizontal axis of rotation of said carrier, said axis of rotation of said arm being oriented in said plane either vertically or vertically diagonally upwardly and outwardly, away from said carrier, stop means to stop said rocker arm in said rest position, and yieldable, countermoment means urging said freely pivotable rocker arm toward said rest position, against said stop means and also pivotally returning said arm to said rest position upon pivotal movement of said rocker arm by said thread followed by moving of the thread off the rocker arm, said pivotal movement by said thread occuring when running thread inserted in said catching groove and caught therein runs in a deflected path over said edge of said rocker arm and moves therealong toward said lug until the force of said thread causes said rocker arm to pivot with swinging of its lug-bearing end toward said winding carrier, the thread path being so deflected out of the range of said traversing device until the inertia of said arm and said yieldable means is overcome by the torque applied by the force of said thread against said edge as it moves toward said lug and then off said rocker arm when the latter is pivoted by said torque.
Claim 3
Dependent Claim
47 words
A device as claimed in claim 1, and a guide rod extending longitudinally parallel to the axis of said winding carrier outwardly of said edge and in position relative to the thread path to deflect the thread successively first across said rod and then across said edge.
Claim 4
Dependent Claim
48 words
A device as claimed in claim 2 wherein said yieldable means is provided by the location of the center of gravity of said rocker arm relative to the pivot axis thereof to provide a gravitational torque in a direction counter to the torque direction applied by said thread.
Claim 5
Dependent Claim
58 words
A device as claimed in claim 3, and additional stop means positioned to arrest the swinging movement of said rocker arm with the center of gravity thereof positioned relative to said pivot axis of said rocker arm to return the rocker arm by gravitational torque to said rest position after the thread has moved off said rocker arm.
Claim 6
Dependent Claim
26 words
A device as claimed in claim 1, said yieldable means including a magnet exerting a small force yieldably holding said rocker arm in said rest position.
Claim 7
Dependent Claim
51 words
A device as claimed in claim 5, said magnet being a permanent magnet mounted in said rocker arm with its magnetic field axis substantially parallel to the pivot axis of said rocker arm, and a fixed, magnetizable, metal surface positioned opposite said magnet when said rocker arm is in rest position.
Claim 8
Dependent Claim
52 words
A device as claimed in claim 6, said magnet being mounted in a bore in said rocker arm, said bore being parallel to the axis of rotation of said rocker arm, and means for adjustably positioning the magnet in said bore for varying the distance between said magnet and said metal surface.
Claim 9
Dependent Claim
31 words
A device as claimed in claim 7, said surface being a surface on an arm of a frame member, and said arm extending parallel to the axis of said winding carrier.
Claim 10
Dependent Claim
25 words
A device as claimed in claim 1, and means supporting said rocker arm at varied inclinations in said radial plane of its axis of rotation.
Claim 11
Dependent Claim
31 words
A device as claimed in claim 9, said last-mentioned means being pivotable means and moving said axis of rotation of said rocker arm in said plane radial to the winding carrier.
Claim 12
Dependent Claim
31 words
A device as claimed in claim 2, means mounting said guide rod for adjustable movement thereof with said guide rod remaining substantially longitudinally parallel to said axis of said winding carrier.
Claim 13
Dependent Claim
31 words
A device as claimed in claim 11, said last-mentioned means moving said rod in a plane inclined relative to the horizontal in a direction toward or away from said winding carrier.
Claim 14
Dependent Claim
41 words
A device as claimed in claim 1, and means forming a thread guiding bight on the end of said rocker arm remote from said lug, said bight providing a thread positioning guide used In threading said thread on said winding carrier.
Claim 15
Dependent Claim
148 words
A device as claimed in claim 2, said traversing device embodying a grooved roller adapted to take over and guide the traversing movement of the thread at the stroke reversal zones, said drive roller being behind said grooved roller, and said winding carrier being beneath and between said rollers, and thread feed guide members having guide bars parallel to the axis of said winding carrier and including means for guiding the thread in a path initially spaced from said rocker arm and its guide rod to a position below said winding carrier and then upwardly into said thread catching groove in the winding carrier and substantially simultaneously with the catching of said thread in said groove changing the thread path to one over said edge of said rocker arm and its associated guide rod as the thread tension increases upon beginning of the winding thereof on said carrier.
Claim 16
Dependent Claim
92 words
A device as claimed in claim 1, said stop means including a locking lever with an engaging portion on it in order to engage with said rocker arm and to stop it in said rest position, means pivotally mounting said locking lever near to said rocker arm in such a way, that said lever is kept in engagement with said rocker arm by said yieldable means and that it is brought out of engagement with said rocker arm by the force of said thread, as it is caught in said catching groove.
Claim 17
Dependent Claim
43 words
A combination comprising a plurality of devices as claimed in claim 13, and a common thread feed guide member extending parallel to the traversing members of said devices for applying respective threads simultaneously against respective bights in respective rocker arms of said devices.
References Cited (Backward Citations)
US3065921A
Cited
US3097804A
Cited
US3166262A
Cited
US3276704A
Cited
US3275252A
Cited
US3408011A
Cited
US3282516A
Cited
US3595490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |