US 4,277,866 A · Jewelry clasp and method

Abstract

A small, strong jewelry clasp which requires fewer manufacturing steps to produce is disclosed. A generally flat, rectangular, elongate pin body is formed having a finger element extending from one end thereof. The other end of the pin body typically has a hole formed therethrough to capture a link of a chain. The upper surface of the pin body has a notch formed therein for receipt of a compression spring. This notch is bounded on one end by a spring stop portion of the pin body. The other end of the notch is open. A box-like enclosure member is formed by folding a flat piece of malleable material to fit around both the pin body and the notch formed in the pin body. A portion of the enclosure which is near the open end of the notch is folded inwardly so that when the enclosure is slid over the pin body, a spring is captured between the spring stop portion of the pin body and inwardly folded portion of the enclosure. The finger element is then bent into a generally J-shaped configuration so that the end of the free end of the finger element abuts the inwardly folded portion of the enclosure. The enclosure is typically provided with a protuberance or handle by which the enclosure can be urged against the biasing force of the compression spring to create a gap between the inwardly folded portion of the enclosure and the free end of the finger element. A link of a jewelry chain is placed into and secured within the aperture formed by the finger element, the pin body and the enclosure.

Claims2

Dependent claims

A jewelry clasp comprising:

a relatively flat, elongate pin body made of malleable metal having a first end and a second end and having a finger element extending from said first end, said finger element being generally J-shaped;
said body having a spring notch formed along the upper edge of said body, said notch being bounded at one end by a spring stop portion of said body and being open at the opposed end thereof, said spring stop portion and the free end of said J-shaped finger element being in opposed, spaced, relation;
a box-like enclosure surrounding at least a portion of said body and completely surrounding said spring notch, said enclosure having an enclosure spring stop element disposed between said free end of said finger element and said spring stop portion of said body and being slidable parallel to said spring notch, said spring stop element having an inner face facing said spring stop portion and a seating surface facing said free end;
and
a compression spring captured within said spring notch and between said spring stop portion and said inner face thereby biasing said seating surface against the free end of said finger element to define a closeable aperture bounded by said J-shaped finger element, said enclosure and said pin body.

2 more elements

Dependencies are inferred from the claim text.

Jewelry clasp and method

Life of this patent

Jewelry clasp and method

Life of this patent

Abstract

Claims2