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

D - Textiles, Paper

05

B

112/92

D05B 71/00 (2006.01) D05B 71/04 (2006.01)

Patent

CA 1141597

VORTEX TUBE ASSEMBLY FOR COOLING SEWING MACHINE NEEDLE 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.

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