Spear gun tip assembly

A spear assembly for an underwater spear fishing device comprising an elongated shaft adapted to be fired from a spear gun and having a long axis, a forward portion, and a rearward portion, and a tip member having front and rear portions, said tip member being removably attached to said forward portion of said shaft, an elongated flexible cable with a forward end attached to said tip member and a rearward portion attached to said rearward portion of said shaft, a barb including a barb body attachable to said tip member adjacent said rear portion of said tip member and having a rearwardly directed barb point, rear cable restraint means on said shaft, said rear cable restraint means being rotatable to one position for providing resistance onto said cable to impede movement of said cable and said tip member until said spear is released from a spear fishing device;

• said rear cable restraint means including a retainer flange carried by said shaft and having a passageway therethrough for carrying said cable therein, a cable retainer ring including a slot formed in an outer surface of said cable retainer ring, a resilient O-ring carried on said retainer ring, a portion of said O-ring being positioned over said slot and being movable downwardly, a portion of said cable being threaded through said passageway in said retainer flange and over said O-ring, said slot being rotatably positionable with respect to said cable threaded through said passageway to said one position wherein said cable portion is overlaying a portion of said O-ring over said slot to allow for downward movement of said portion of said cable to allow free movement of said cable and another position wherein said cable portion is overlying a portion of said O-ring over said retainer ring spaced away from said slot for engagement of said portion of said cable to inhibit said tip member from disengaging from said shaft prior to releasing said shaft by a spear fishing device.