IMPROVEMENTS IN GRAPNELS

PERFECTIONNEMENTS AUX GRAPPINS

Claims

Claim lst A grapnel provided with a Movable plug extending outward through the fluke or arm of the grapnel, and with an electric contact plate connection with a signal, whereby the engagement of the fluke or arm with a body is caused to press the plug inward and complete the circuit, thereby operating the signal. 2nd The grapnel consisting of a body having arms or flukes, one or more of said arms containing an insulated contact plate in electric connection with a signal and a yielding or spring sustained plug, held normally out of contact with said plate, but extending outside of the arm, and adapted to be pressed inward by contact with bodies against which the grapnel is drawn, and thereby to complete the circuit and cause the operation of the signal. 3rd The grapnel consisting of body a, insulated conductor al, contact plate h, plug e having point or needlef, and spring a. 4th In a grapnel, the combination of insulated conductor co, contact plate D, elastic packing g, plug e having pointer needle f, washer d and tubular threaded plug c. 5th In combination with contact surface h and spring p, plug e having threaded stem or pin f adapted to he screwed in or out, to lengthen or shorten the distance between its point and the contact surface h.