초록 ▼

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 t

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.

대표청구항 ▼

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

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.