Needle cooler

Abstract

A needle cooler for a sewing machine with a vortex tube producing a cold air and hot air stream, a mounting block for mounting the cooler on a sewing machine with a bore connected to the vortex tube for transmitting the cold air to a nozzle via a flexible plastic tube, and an L-shaped positioning rod extending through bores in the block and nozzle for positioning the nozzle in a desired orientation with set screws engaging the rod in the bores for holding the nozzle in the desired orientation.

What is claimed is: 
     
       1. A needle cooler for a sewing machine comprising: a vortex tube having an inlet for connection to a source of pressurized gas, a cold air outlet and a hot air outlet;   a block mounting said tube having a bore extending therethrough from an inlet coupled to said cold air outlet to a block outlet, said block including means for mounting said cooler on a sewing machine;   a nozzle for directing cold air onto a sewing machine needle;   a flexible tube connecting said block outlet to said nozzle; and   a manually adjustable positioning rod extending between said block and said nozzle for positioning and holding said nozzle in an orientation so that said nozzle directs said cold air onto said needle.   
     
     
       2. A cooler as in claim 1, wherein said rod has an L-shape with a vertical portion extending through a second bore in said block and a horizontal portion extending through a bore in said nozzle and including a first set screw engaging said rod in said second bore and a second set screw engaging said rod in said nozzle bore. 
     
     
       3. A cooler as in claim 1, wherein said rod is metal and said tube is plastic. 
     
     
       4. A cooler as in claim 1, further including a metal outlet tube connected to said hot air outlet.