Vortex tube assembly for cooling sewing machine needle
AssigneeVortec Corporation
InventorLeslie R. Inglis
Life of this patent
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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.
Claims13
An apparatus for cooling the needle of a sewing machine mounted upon a worktable and equipped with a pressure foot bushing adjacent such needle, comprising a vortex tube having an air inlet for receiving pressurized air, a hot air outlet, and a cold air outlet;
- a base secured to said vortex tube and equipped with mounting means for attaching the same to a worktable at a point remote from the needle of a sewing machine;
- a nozzle assembly with means for securing said assembly to the pressure foot bushing of a sewing machine for directing air towards the needle thereof;
- and an elongated sound-muffling temperature-insulating hose extending from the cold air outlet of said vortex tube to said nozzle assembly.
Dependencies are inferred from the claim text.