Easy-threading sewing needles and method of making such needles

Details Easy-threading sewing needles and method of making such needles Easy-threading sewing needles and method of making such needles

1980-07-08

1983-05-31

Nerbun, Peter P.

Sewing

Elements

Needles

223102, D05B 8502

Patent

active

043855750

ABSTRACT:
Easy-threading sewing needles, in two embodiments, for hand needles and sewing machine needles are disclosed, as well as a method for making the easy-threading structure. The needles have eyes defined by sidewalls, one of which is slit along a plane which passes from the outer surface into the eye and divides the sidewall into an elongated inner clip member and a conforming retaining member. The clip member is mechanically spring-biased against the retainer but may be resiliently bent inward to open the slit by pressing a thread loop against the outside of the sidewall. The clip springs back against the mating surface of the retainer as soon as the thread enters the eye and the pressure is removed. The machine needle includes an off-center eye and the thread trap formed on the thinner sidewall, the point of the needle being formed off-center under the eye and a smooth shoulder projecting outward just under the entrance to the slit. In making the thread trap, maleable needle stock is slit prior to tempering and the clip and retainer members reversed in position by moving the clip outward. The clip is hardened and tempered to make it resilient in this outward position and then resiliently bent into its original position within and now bearing against the retainer member.

REFERENCES:
patent: 1054117 (1913-02-01), Henderson
patent: 1878915 (1932-09-01), Trejo
patent: 2721014 (1955-10-01), Allen

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