US 5,345,888 A · Automatic needle threader

Abstract

An automatic needle threader, which uses compressed air to thread the needles of sewing machines, has means for imparting a rotational or swirling motion to the air which smooths out the frayed ends of the thread for easier and more positive threading. The compressed air is directed into an air chamber in which a spiral shaped baffle is mounted to impart the swirling motion. The threader can be permanently mounted on a sewing machine with a hinge connection allowing the threader to be moved out of position when not in use and to be moved into position so that the exiting end of the air chamber is located adjacent and opposite the eye of the needle. Alternatively, the threader may be removably mounted to a sewing machine using straps connected to the hinge.

Claims19

Dependent claims

An automatic needle threader for a sewing machine comprising a housing;

an air chamber attached to said housing;
a hinge having a first section adapted to be connected to said sewing machine and a second section being pivotally connected, via a horizontally disposed hinge pin, to said first section and being connected to said housing, said air chamber comprising a proximal section having a first and a second end, said first end being attached to said housing;
a funnel section having a third and a fourth end, said third end being attached to said second end;
and a spout section attached to said fourth end;
a means for providing compressed air into said chamber;
and a means for imparting a swirling motion to said compressed air.

3 more elements

Dependencies are inferred from the claim text.

Automatic needle threader

Life of this patent

Automatic needle threader

Life of this patent

Abstract

Claims19