Fishing – trapping – and vermin destroying – Fishing – Harpoons and spears
Patent
1986-09-30
1987-08-11
Jordan, M.
Fishing, trapping, and vermin destroying
Fishing
Harpoons and spears
A01K 8104
Patent
active
046852395
ABSTRACT:
This invention comprises a pointed spear head for sport fishing spear guns which is formed of a metal having a Rockwell hardness of at least 30 and distally having a sharply pointed end. At its opposite end, the spear head has an annular groove and intermediate its ends, the spear head has a pair of opposite flats with a single bore extending transversely therethrough, between the flats. A pair of folding wings, each having side flanges with apertures which are aligned with the transverse bore are received over the flatted portions of the head with their apertures aligned with the single through bore of the shaft and with a pin extending therethrough to pivotally secure the wings to the shaft. The spear point is provided with a slidable sleeve retainer which can be slipped over the ends of the wings to retain them in their folded positions. The spear point head of the hardened steel is connected to a shaft adapter of intermediate hardness, e.g., stainless steel having a hardness from about 10 to about 20 Rockwell and, for this purpose, the adapter has a central bore which receives the grooved end of the spear point head. The adapter has its opposite sidewalls internally upset or indented into the annular groove to secure the spear point permanently to the retainer while permitting its freedom of rotation. The opposite end of the adapter has a conventional threaded end such as a distal threaded boss or internally threaded bore to permit its threaded attachment to the main shaft of a spear.
REFERENCES:
patent: 3102525 (1963-09-01), Englis
patent: 3320941 (1967-05-01), Houghton
patent: 3878788 (1975-04-01), Ah Sam
patent: 3945642 (1976-03-01), Henthorn
Jordan M.
Runnells Ann
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