US4450781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread wiping mechanism
Assignee: Noxet UK Ltd
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Filing: 1982-04-01
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Granted: 1984-05-29
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Expires: 2002-04-01
Abstract
Abstract A multiple needle sewing machine having a shiftable needle mechanism wherein threaded needles may be shuttled from an active to an inactive position and vice versa. A thread wiping mechanism, comprising an arrangement of articulated fingers is disposed adjacent the needles' inactive positions. Upon a proper signal, the fingers extend to a position to await the inactive needle, whereupon, the fingers will be retracted, catching only the thread of the inactive needle holding it out of the way of the needle in the active position. The thread wiping mechanism may be actuated by reciprocable means attached to the fingers, which actuation occurs upon receipt of a proper signal during operation of the sewing machine.
Inventors
- 👤 Francis A. Wickers
- 👤 Adolph S. Dorosz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:58
CPC Classifications
D; D05; D05B; D05B65/00; D05B65/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
66 words
A thread wiping mechanism for a sewing machine having a plurality of shuttleable needles thereon, which wiping mechanism is employed to retract the threads of any needle which is inactive in said machine comprising: a needle holder assembly slidably arranged on a sewing machine head; a thread wiper arranged to remove any thread from any inactive needle out of the sewing path of any active needle.
Claim 2
Dependent Claim
66 words
A thread wiping mechanism for a sewing machine having a plurality of shuttleable needles thereon, which wiping mechanism is employed to retract the threads of any needle which is inactive in said machine comprising: a needle holder assembly slidably arranged on a sewing machine head; a thread wiper arranged to remove any thread from any inactive needle out of the sewing path of any active needle.
Claim 3
Dependent Claim
32 words
A thread wiping mechanism for a sewing machine, as recited in claim 1, wherein said thread wiper comprises a reciprocable mechanism arranged adjacent said needle holder assembly on said sewing machine head.
Claim 4
Dependent Claim
31 words
A thread wiping mechanism for a sewing machine, as recited in claim 2, wherein said reciprocable mechanism includes a curved wiper finger disposed on the distal end of a reciprocable shaft.
Claim 5
Dependent Claim
23 words
A thread wiping mechanism for a sewing machine, as recited in claim 3, wherein each shuttleable needle has a wiper finger associated therewith.
Claim 6
Dependent Claim
41 words
A thread wiping mechanism for a sewing machine, as recited in claim 3, wherein said reciprocable mechanism also includes a pressurizable cylinder secured to said wiper finger, said pressurizable cylinder being operable to effect the reciprocable motion of said wiper finger.
Claim 7
Dependent Claim
30 words
A thread wiping mechanism for a sewing machine, as recited in claim 3, wherein said wiper finger has a trough portion which when fully extended, is beneath its respective needle.
Claim 8
Dependent Claim
27 words
A thread wiping mechanism for a sewing machine, as recited in claim 3, wherein a plate is arranged parallel to each wiper finger in its retracted position.
Claim 9
Dependent Claim
26 words
A thread wiping mechanism for a sewing machine, as recited in claim 5, wherein all of said wiper fingers are actuated by a single pressurizable cylinder.
Claim 10
Dependent Claim
31 words
A thread wiping mechanism for a sewing machine, as recited in claim 7, wherein said wiper finger clinches the thread of an inactive needle between said plate and said wiper finger.
Claim 11
Independent Claim
91 words
A method of removing thread of an inactive needle from the sewing path of an active needle in a shuttleable multiple needle sewing machine comprising: providing an actuatable reciprocable thread wiping mechanism adjacent the shuttleable needle mechanism on the sewing machine; actuating said thread wiping mechanism so as to extend a wiping finger beneath its needle; shuttling said shuttleable multiple needle mechanism in a support wherein a needle is shifted from an active position to an inactive position and a needle is shifted from an inactive position to an active position.
Claim 12
Independent Claim
91 words
A method of removing thread of an inactive needle from the sewing path of an active needle in a shuttleable multiple needle sewing machine comprising: providing an actuatable reciprocable thread wiping mechanism adjacent the shuttleable needle mechanism on the sewing machine; actuating said thread wiping mechanism so as to extend a wiping finger beneath its needle; shuttling said shuttleable multiple needle mechanism in a support wherein a needle is shifted from an active position to an inactive position and a needle is shifted from an inactive position to an active position.
Claim 13
Dependent Claim
49 words
A method of removing thread of an inactive needle, as recited in claim 10, including: actuating said thread wiping mechanism so as to retract itself from beneath its respective needle; catching the thread of said inactive needle on said finger on the distal end of said thread wiping mechanism.
Claim 14
Dependent Claim
38 words
A method of removing thread of an inactive needle, as recited in claim 11, including: pulling the thread of said inactive needle from any material being stitched, with said finger in the distal end of said wiping mechanism.
Claim 15
Dependent Claim
38 words
A method of removing thread of an inactive needle, as recited in claim 12, including: providing a generally flat plate adjacent each of said wiper fingers; wiping said pulled thread against said flat member by said wiping finger.
Claim 16
Dependent Claim
53 words
A method of removing thread of an inactive needle, as recited in claim 13, including; pinching said pulled thread of said inactive needle between said wiping finger and said flat member, until subsequent reactuation of said thread wiping mechanism effectuates subsequent extension thereof beneath its needle and release thereby of said wiped thread.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |