Vortex tube assembly for cooling sewing machine needle

Details Vortex tube assembly for cooling sewing machine needle Vortex tube assembly for cooling sewing machine needle

1979-09-28

1981-12-15

Feldbaum, Ronald

Sewing

Elements

Cooling

D05B 7100

Patent

active

043053394

ABSTRACT:
An apparatus for cooling the needle of a sewing machine to reduce problems of thread breakage because of frictional heat build-up. The apparatus includes a vortex tube secured to the worktable for a sewing machine at a point remote from the sewing head of that machine, a nozzle assembly affixed to the pressure foot bushing of the machine and directed towards the sewing needle, and an elongated insulated noise-muffling hose extending from the cold air outlet of the remotely-positioned vortex tube to the nozzle assembly. The nozzle assembly includes a generally vertically oriented nozzle tube having a plurality of side openings for directing jets of cooling air towards the sewing needle, and an adjustable sleeve for controlling the discharge of such air.

REFERENCES:
patent: 2669207 (1954-02-01), Happe
patent: 3483836 (1969-12-01), Meersand
patent: 3910210 (1975-10-01), Marforio
patent: 4193364 (1980-03-01), Dunne

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