US3665976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction apparatus on a textile machine
Assignee: Ruti Machinery Works Ltd
•
Filing: 1970-06-29
•
Granted: 1972-05-30
•
Expires: 1990-06-29
Abstract
Abstract A suction apparatus for picking up the free end-portion of a thread on a textile machine wherein the thread is brought into a freely stretched condition over a suction means and is drawn into this means by a suction action, said apparatus comprising a thread-holder located on the suction means, said holder comprising clamping zones that are biassed towards each other for clamping a thread therebetween and guide means for guiding the end-portion of the thread towards the clamping zones; and means for pulling the end-portion of the thread, drawn into the suction means, in between the clamping zones.
Inventors
- 👤 Alexis Freihofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:11
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/28; D03D47/30; D03D47/3066; D03D47/308
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
109 words
In a suction apparatus having suction means for picking up a free end-portion of a thread on a textile machine wherein the thread is brought by thread locating means over said suction means and is drawn into said suction means by the suction action thereof, the improvement which comprises: a thread-holder located on the suction means, said thread-holder comprising clamping zones that are biassed towards each other for clamping a thread therebetween; guide means for guiding the end-portion of the thread towards the said clamping zones; and means for pulling the end-portion of the thread, drawn into the suction means, into clamped condition positioned between the said clamping zones.
Claim 2
Dependent Claim
109 words
In a suction apparatus having suction means for picking up a free end-portion of a thread on a textile machine wherein the thread is brought by thread locating means over said suction means and is drawn into said suction means by the suction action thereof, the improvement which comprises: a thread-holder located on the suction means, said thread-holder comprising clamping zones that are biassed towards each other for clamping a thread therebetween; guide means for guiding the end-portion of the thread towards the said clamping zones; and means for pulling the end-portion of the thread, drawn into the suction means, into clamped condition positioned between the said clamping zones.
Claim 3
Dependent Claim
124 words
The suction apparatus of claim 1 in which said suction means comprises a suction nozzle having a suction orifice, the clamping zones are formed by two small clamping plates which bear against each other, said plates being located at the suction orifice of the suction-nozzle and being biassed towards each other, said guide means comprises a pair of generally opposed guide surfaces which, beginning at the clamping zones, diverge from each other to form an opening therebetween; the end-portion of thread to be picked up extends over the suction orifice in the freely stretched condition from that side on which the clamping zones are located, and is moved in between the clamping zones by being pulled back by said means for pulling the thread.
Claim 4
Dependent Claim
44 words
The suction apparatus of claim 2 in which said textile machine is a loom, and said means for pulling said thread comprises a thread pull-back device; the thread pull-back device and the suction-nozzle being located on opposite sides of the warp-threads on said loom.
Claim 5
Dependent Claim
25 words
The suction apparatus of claim 3 in which the thread pull-back device is arranged between a retaining means for holding the thread and the suction-nozzle.
Claim 6
Dependent Claim
98 words
The suction apparatus of claim 2 in which the clamping plates are arranged approximately in a plane at right-angles to the direction in which suction takes place and are positioned to partly overlap each other, said overlapping portions of the plates forming said clamping zones, the lateral boundary portions of each of the two plates cross at a point of intersection, and said boundary portions comprise the guide means which extend in one direction from the point of intersection and form the limits of the clamping zones which extend in the other direction from the point of intersection.
Claim 7
Dependent Claim
20 words
The suction apparatus of claim 5 in which the two plates are each secured on opposite sides of the suction-nozzle.
Claim 8
Dependent Claim
116 words
The suction apparatus of claim 5 in which the upper plate of the two clamping plates has lateral boundary portions that are rectilinear on both sides of the point of intersection and the lower plate of the two clamping plates has lateral boundary portions that have a change of course in the direction extending from the point of intersection in the sense of an increase of the angle defined by the guide surfaces, and in the other direction extending from the point of intersection, the first boundary portion of said lower plate extends in at least approximately the same direction and then angles at right-angles thereto, to form a limit for one of the clamping zones.
Claim 9
Dependent Claim
25 words
The suction apparatus of claim 5 in which the upper plate comprises ferromagnetic material and is biassed towards the lower plate by a magnetic means.
Claim 10
Dependent Claim
83 words
The suction apparatus of claim 2 in which the said guide surfaces are provided by generally inward directed edges of said clamping plates to form an acute angle therebetween so the end-portion of the said thread can be extended over the suction-nozzle in the freely stretched condition in a direction which is at least approximately parallel with a straight line which falls within the said angle formed by the guide surfaces of said guide means and pass through the apex of this angle.
Claim 11
Dependent Claim
33 words
The suction apparatus of claim 2 in which said nozzle has an elongated suction orifice and the clamping zones are located adjacent to the suction orifice at one end of its lengthwise extent.
Claim 12
Dependent Claim
16 words
The suction apparatus of claim 2 in which the divergent guide surfaces form an acute angle.
Claim 13
Dependent Claim
26 words
The suction apparatus of claim 1 in which additional means are provided for individually removing from said thread-holder the end-portions of thread clamped in said holder.
Claim 14
Dependent Claim
51 words
The suction apparatus of claim 12 in which said thread-holder includes means for biassing the clamping zones toward each other, and said additional means comprises a device for cutting off the free end-portion of each thread and for opening the two clamping zones thereby overcoming the effect of said biassing means.
Claim 15
Dependent Claim
108 words
The suction apparatus of claim 12 in which said additional means comprises an auxiliary suction-nozzle which, for the purpose of pIcking up a thread, is provided with threader means, said suction means comprises a first suction-nozzle, and the first and the auxiliary suction-nozzles are adapted for movement relatively to each other so that a first such relative movement can effect bringing of the thread into the threader means and a second such relative movement can effect pulling of the thread out of the first suction-nozzle, with the said second relative movement also effective for causing an increase in the length of thread required up to the first suction-nozzle.
Claim 16
Dependent Claim
60 words
The suction apparatus of claim 14 in which the auxiliary suction-nozzle is located at a side of the first suction-nozzle that is adapted to have extended therefrom the end-portion of thread to be picked up, and the threader means is formed by a portion of the side-wall of the said auxiliary suction-nozzle that is adjacent to the said first suction-nozzle.
Claim 17
Dependent Claim
77 words
The suction apparatus of claim 14 in which said textile machine is a loom having a sley and means for forming a shed from warp threads supplied to the loom, and, in a lateral direction thereof and in the direction away from the shed, there is first arranged said auxiliary suction-nozzle followed by the said first suction-nozzle, the auxiliary suction-nozzle being mounted firmly on the loom and the first suction-nozzle adapted to be movable on the sley.
Claim 18
Dependent Claim
43 words
The suction apparatus of claim 2 in which, immediately before the clamping zones and extending towards said zones the angle defined by the said diverging guide surfaces is diminished by a change in direction of at least one of the said guide surfaces.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |