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Patent Searching and Data


Title:
A MULTIFUNCTION STATIC DEVICE INSTALLED IN CORRESPONDENCE TO THE PRESSER FOOT OF AN INDUSTRIAL SEWING MACHINE
Document Type and Number:
WIPO Patent Application WO/2012/131743
Kind Code:
A3
Abstract:
A multifunction static device for industrial sewing machines of the type comprising a foot-holder bar (2), fixed to which is a presser foot (3)', and a needle (4) moved by a needle-holder bar (.5), said device being characterized in that it substantially comprises a thin shaped tube (1), made of material resistant to impact and to wear, such as for example stainless steel, which is firmly constrained to said foot-holder bar (2) and envisages a bottom end (7) set alongside the needle (4) and facing in a direction transverse thereto in order to cool it during its axial movement, as well as a top end (14), which is connected to a compressed-air system of the production line or to another compressed-air sources, wherein the air delivered by the bottom end (7) of the tube (1) is managed and regulated by two purposely provided solenoid valves: a first solenoid valve is designed to activate/deactivate the emission of air for cooling the needle (4).during execution of the sewing operation, whilst a second solenoid valve is designed to activate/deactivate the emission - from the same bottom end (7) of said tube (1) - of an appropriate jet of air after the end of the sewing operation and/or of an appropriate jet of air immediately before start of the sewing operation to perform a thread-wiper function; for said purpose, the position of the bottom end (7) of the tube (1) is located at a height that substantially corresponds to the eye of the needle (4) when it is in the top resting position, or else immediately below the eye of the needle.

Inventors:
ROMANO ANTONINO (IT)
Application Number:
PCT/IT2012/000089
Publication Date:
December 20, 2012
Filing Date:
March 26, 2012
Export Citation:
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Assignee:
ROMANO ANTONINO (IT)
International Classes:
D05B81/00; D05B83/00
Foreign References:
FR2543585A11984-10-05
US4230056A1980-10-28
US3540392A1970-11-17
DE29912970U11999-09-16
DE19624344A11998-01-02
Attorney, Agent or Firm:
SARPI, Maurizio (Via Colina 36, - Rome, IT)
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