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US3751896A Expired / Lapsed US ⏱️ 0.0 years remaining

Yarn handling

Assignee: Leesona Corp
•
Filing: 1971-06-21
•
Granted: 1973-08-14
•
Expires: 1991-06-21
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Abstract

Abstract Automatic servicing apparatus for spinning stations of one or more spinning frames includes provision for severing and clamping roving to stop feeding of the roving and to present a cleanly severed supply end of the roving in convenient position for subsequent thread-up. A carriage patrols the spinning stations and stops at any station requiring servicing, whereupon mechanism on the carriage doffs the bobbin being wound at the station, donns an empty bobbin core and normally starts the yarn spun from the roving winding onto the empty bobbin. If a station cannot be adequately serviced by the carriage mechanism a signal initiates operation of a scissor on the carriage and as the scissor is moved to an operative position for cutting the roving upstream of the drafting roll stand a roving clamp clamps the severed end of the roving extending from the roving supply. The scissor is then retracted and the station is rendered inoperative by the prior movement of a target on the clamp to a position in which a photo responsive sensor is not actuated so that the carriage subsequently by-passes the station.

Inventors

  • 👤 M Ford

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 12:53
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/14; D01H13/145; D01H13/005; D01H13/16; D01H13/18; D01H13/188

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 78 words
Apparatus for servicing at least one strand processing station of a plurality of such stations comprising, strand holding means operable to hold a strand at said one station, severing means, means for moving said severing means past said plurality of stations, said severing means being operable to sever the strand at said one station, and means for actuating said holding means at said one station and said severing means to hold and sever said strand at said station.
Claim 2
Dependent Claim 78 words
Apparatus for servicing at least one strand processing station of a plurality of such stations comprising, strand holding means operable to hold a strand at said one station, severing means, means for moving said severing means past said plurality of stations, said severing means being operable to sever the strand at said one station, and means for actuating said holding means at said one station and said severing means to hold and sever said strand at said station.
Claim 3
Dependent Claim 25 words
Apparatus as set forth in claim 1 wherein said holding means comprises means for clamping a severed end of a strand which has been severed.
Claim 4
Dependent Claim 64 words
Apparatus as set forth in claim 2 wherein said clamping means includes a base member, a clamp member mounted on said base member and movable from an open to a closed position, and overcenter means for alternately retaining said clamp member in the open position to permit movement of the strand past the clamping means and in the closed position to clamp said strand.
Claim 5
Dependent Claim 32 words
Apparatus as set forth in claim 3 wherein said overcenter means comprises a spring on one of said members to retain said clamp member in one of said open and closed positions.
Claim 6
Dependent Claim 34 words
Apparatus as set forth in claim 4 wherein said severing means is movable from an inoperative position to an operative position for cutting said strand in response to operation thereof by said actuating means.
Claim 7
Dependent Claim 41 words
Apparatus as set forth in claim 5 wherein said severing means includes a cutter having at least one movable blade, and including piston means for operating said blade to sever said strand when said severing means is in said operative position.
Claim 8
Dependent Claim 41 words
Apparatus as set forth in claim 5 wherein said severing means includes an abutment, said abutment being engageable with said clamp member as said severing means moves to said operative position to thereby urge said clamp member to its closed position.

References Cited (Backward Citations)

US1973552A Cited
US2886941A Cited
US3365991A Cited
US3626680A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-13 1977-02-12 1977-08-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-13 1981-02-12 1981-08-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-13 1985-02-12 1985-08-14 $7700.00 Window Closed / Lapsed

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