Electro-mechanical igniter

Claim 1

IN AN IGNITER FOR IGNITING A SOLID PROPELLANT MOTOR OF A ROCKET FOR LAUNCHING THEREOF SUBSEQUENT TO THE ERECTION OF SAID ROCKET, SAID IGNITER INCLUDING A HOUSING SECURED TO ONE END OF SAID MOTOR AND ENCLOSING A SOLENOID INCLUDING A STATOR HAVING A COIL WOUND THEREON, A SOURCE OF ELECTRIC ENERGY CONNECTED TO SAID COIL FOR ENERGIZATION THEREOF FOR GENERATION OF A MAGNETIC FIELD THEREIN, AN ARMATURE SLIDABLY MOUNTED IN SAID STATOR AND PROVIDED WITH A NORMAL POSITION THEREIN, A FIRING PIN SECURED TO SAID ARMATURE FOR DISPLACEMENT IN A RECTILINEAR PATH AND CONTACT WITH A PRIMER CAP ADJACENT THE PROPELLANT FOR IGNITION THEREOF RESPONSIVE TO THE ENERGIZATION, THE IMPROVEMENT COMPRISING; MAGNETIC RESTRAINING MEANS SECURED IN SAID HOUSING TO RESTRAIN SAID FIRING PIN IN SAID NORMAL POSITION FOR INCREASE OF THE MAGNETIC FIELD IN THE GENERATION TO A PREDETERMINED VALUE TO PRODUCE A HIGH VALUE OF THE VELOCITY OF THE DISPLACEMENT AND CONSEQUENT HIGH FORCE OF IMPACT AT SAID CONTACT AND A MERCURY SWITCH CONNECTED BETWEEN SAID SOURCE OF ELECTRIC ENERGY AND SAID IGNITER TO PREVENT ENERGIZATION OF THE IGNITER UNTIL SAID ROCKET IS ERECTED TO A PREDETERMINED ANGLE FOR LAUNCHING THEREOF.