US3782089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for piecing-up yarn in an open-end-spinning device
Assignee: Rieter Ingolstadt GmbH
•
Filing: 1971-11-18
•
Granted: 1974-01-01
•
Expires: 1991-11-18
Abstract
Abstract A momentary contact switch connected in parallel with a yarn tension monitoring switch is actuated by swinging of the bobbin holder beyond a normal servicing position immediately prior to swinging such holder into working position. Such switch overrides the yarn-monitoring switch to effect fiber feed to the yarn formation zone earlier than such feed would normally be effected by the yarn-monitoring switch since the latter switch is not actuated until the yarn tension is increased to normal spinning tension. A holding switch is actuated by the momentary contact switch to maintain the overriding function between the time the momentary contact switch is released by the bobbin holder being swung out of contact and the time the yarn-monitoring switch is reversed. Alternatively, a Bowden wire connecting the bobbin holder and the yarn-monitoring switch reverses such switch to begin fiber feed. Other overriding switch constructions include a button on the bobbin holder manually operable to release the bobbin holder from a latched servicing position and simultaneously to actuate the overriding switch, a swingable switch lever moved into and out of switch-actuating contact with a leaf spring contact as a cam slides past it on opposite passes of the swinging bobbin holder, or a ratchet-and-pawl latch for the bobbin holder in which the pawl constitutes a switchactuating cam.
Inventors
- 👤 H Landwehrkamp
- 👤 G Hoeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:15
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/48
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
185 words
An apparatus for piecing-up yarn in an open-end-spinning device comprising a yarn formation zone, separating means for separating a fiber band into individual fibers, feeding means for feeding a fiber band to said separating means including control means for controlling feed of the fiber band, a spool device for receiving a yarn having been spun in said yarn formation zone having a swingable bobbin holder, a handle on said bobbin holder to swIng said bobbin holder between a working position and a servicing position, yarn-monitoring means between said yarn formation zone and said spool device electrically connected to said control means for operating said control means in response to yarn tension to stop fiber band feed when such tension is reduced below a selected tension and to permit such feed when the tension exceeds such selected tension, means for overriding operation of said control means by said yarn-monitoring means, and an operating part on said bobbin holder for actuating said overriding means in response to selected movement of said bobbin holder to effect fiber band feed irrespective of the feedstopping condition of said yarn-monitoring means.
Claim 2
Independent Claim
185 words
An apparatus for piecing-up yarn in an open-end-spinning device comprising a yarn formation zone, separating means for separating a fiber band into individual fibers, feeding means for feeding a fiber band to said separating means including control means for controlling feed of the fiber band, a spool device for receiving a yarn having been spun in said yarn formation zone having a swingable bobbin holder, a handle on said bobbin holder to swIng said bobbin holder between a working position and a servicing position, yarn-monitoring means between said yarn formation zone and said spool device electrically connected to said control means for operating said control means in response to yarn tension to stop fiber band feed when such tension is reduced below a selected tension and to permit such feed when the tension exceeds such selected tension, means for overriding operation of said control means by said yarn-monitoring means, and an operating part on said bobbin holder for actuating said overriding means in response to selected movement of said bobbin holder to effect fiber band feed irrespective of the feedstopping condition of said yarn-monitoring means.
Claim 3
Dependent Claim
71 words
The apparatus defined in claim 1, in which the yarn-monitoring means includes a switching member movable between a first position in which said member supplies current to the control means to permit fiber feed and a second position in which said member interrupts supply of current to the control means for stopping the fiber band feed, and the overriding means is operable to move said switching member into the first position.
Claim 4
Independent Claim
188 words
An apparatus for piecing-up yarn in an open-end-spinning device comprising a yarn formation zone, separating means for separating a fiber band into individual fibers, feeding means for feeding said fiber band to said separating means, control means for controlling feed of the fiber band, a spool device for receiving a yarn having been spun in said yarn formation zone having a swingable bobbin holder, a handle on said bobbin holder to swing said bobbin holder between a working position and a servicing position, yarn-monitoring means between said yarn formation zone and said spool device for monitoring yarn tension, an electrical connection circuit for interconnecting said yarn-monitoring means and said control means, said yarn-monitoring means operating said control means in response to said yarn tension to stop fiber band feed when such tension is reduced below a selected tension and to permit such feed when the tension exceeds such selected tension, and overriding means comprising a switch connected in parallel to said yarn-monitoring means in said electrical connection circuit operable by swinging of the bobbin holder, to override the operation of said control means by said yarn monitoring means.
Claim 5
Independent Claim
188 words
An apparatus for piecing-up yarn in an open-end-spinning device comprising a yarn formation zone, separating means for separating a fiber band into individual fibers, feeding means for feeding said fiber band to said separating means, control means for controlling feed of the fiber band, a spool device for receiving a yarn having been spun in said yarn formation zone having a swingable bobbin holder, a handle on said bobbin holder to swing said bobbin holder between a working position and a servicing position, yarn-monitoring means between said yarn formation zone and said spool device for monitoring yarn tension, an electrical connection circuit for interconnecting said yarn-monitoring means and said control means, said yarn-monitoring means operating said control means in response to said yarn tension to stop fiber band feed when such tension is reduced below a selected tension and to permit such feed when the tension exceeds such selected tension, and overriding means comprising a switch connected in parallel to said yarn-monitoring means in said electrical connection circuit operable by swinging of the bobbin holder, to override the operation of said control means by said yarn monitoring means.
Claim 6
Dependent Claim
40 words
The apparatus defined in claim 3, in which said switch is located in the swinging path of the bobbin holder, further including a switch-operating part having a cam carried on the bobbin holder, said cam being engageable with the switch.
Claim 7
Dependent Claim
86 words
The apparatus defined in claim 3, further including a switch-operating cam projecting from the bobbin holder in a direction substantially perpendicular to the plane through which the bobbin holder is swingable, the switch being located in the swinging path of said cam and including a contact, an intermediate lever which can be tilted in a first direction by said cam to engage said switch contact during downward movement of the bobbin holder and a second direction away from said contact, said contact being an elastic member.
Claim 8
Dependent Claim
51 words
The apparatus defined in claim 3, further including a pivot pin about which the bobbin holder is swingable, a stationary ratchet wheel carried by said pivot pin, and a control pawl carried on the bobbin holder and engageable with said ratchet wheel for holding the bobbin holder in a swung position.
Claim 9
Dependent Claim
81 words
The apparatus defined in claim 6, further including a stop swingable with the bobbin holder and engageable by the pawl to hold such pawl out of engagement with the ratchet, two stationary abutments engageable by said stop spaced arcuately relative to the ratchet a distance less than the arcuate extent of maximum pawl travel, the pawl being slidable relative to said stop when said stop is engaged with one of said abutments in response to further swinging of the bobbin carrier.
Claim 10
Dependent Claim
18 words
The apparatus defined in claim 6, in which the pawl is engageable with the switch fOr actuation thereof.
Claim 11
Dependent Claim
24 words
The apparatus defined in claim 3, further including an operating part carried on the handle of the bobbin holder for actuation of the switch.
Claim 12
Dependent Claim
17 words
The apparatus defined in claim 9, in which the operating part is mechanically connected with the pawl.
Claim 13
Dependent Claim
19 words
The apparatus defined in claim 9, in which the overriding means includes a switch carried by the bobbin holder.
References Cited (Backward Citations)
US1964715A
Cited
US1994403A
Cited
US1994404A
Cited
US2224128A
Cited
US2599256A
Cited
US3354627A
Cited
US3462936A
Cited
GB1213302A
Cited
US3648450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |