Acceleration responsive device

Claim 1

AN ANGULAR ACCELEROMETER FOR SENSING A CHANGE IN THE VELOCITY OF A REVOLVING BODY ABOVE A PRESET VALUE COMPRISING: A SUPPORTING MEMBER; SHAFT MEANS JOURNALED FOR ROTATION WITHIN SAID SUPPORTING MEMBER, SAID SHAFT MEANS HAVING A COAXIAL BORE EXTENDING ALONG THE LENGTH THEREOF AND A PLURALITY OF RADIALLY EXTENDING ADJUSTMENT PORTS SPACED ALONG A PORTION OF THE LENGTH OF SAID SHAFT ADJACENT ONE END OF SAID SHAFT; ADJUSTMENT PLUGS POSITIONED WITHIN SAID PORTS; MEANS ASSOCIATED WITH SAID SHAFT FOR ROTATING THE SAME IN RELATION TO THE VELOCITY OF THE REVOLVING BODY; A HOUSING RIGIDLY SECURED TO SAID SHAFT FOR ROTATION THEREWITH, SAID HOUSING BEING FILLED WITH A DAMPING FLUID; AN INERTIAL MEMBER WITHIN SAID HOUSING AND ROTATABLY SECURED TO SAID SHAFT FOR ROTATION THEREABOUT; A TORSION SPRING HAVING ONE END RIGIDLY SECURED TO SAID INERTIAL MEMBER AND HAVING THE OTHER END THEREOF PASSING THROUGH SAID COAXIAL BORE AND RIGIDLY SECURED TO SAID ONE END OF SAID SHAFT MEANS BY ONE OF SAID ADJUSTMENT PLUGS THEREBY ESTABLISHING THE PRESET VALUE; A PAIR OF SPACED SLIP RINGS SECURED ABOUT THE PERIPHERY OF SAID HOUSING, SAID SLIP RINGS BEING ELECTRICALLY INSULATED FROM EACH OTHER; TWO PAIRS OF DIAMETRICALLY OPPOSED TERMINALS SECURED TO SAID HOUSING, EACH TERMINAL OF SAID PAIR BEING CONNECTED TO ONE OF SAID SLIP RINGS AND EXTENDING WITHIN SAID CHAMBER; PAIRS OF RESILIENT CONTACTS SECURED TO SAID INERTIAL MEMBER AT 90* INTERVALS FOR CUSHIONING ENGAGEMENT WITH SAID TERMINALS WHEN THE CHANGE IN VELOCITY OF THE REVOLVING BODY EXCEEDS SAID PRESET VALUE, EACH CONTACT OF SAID PAIR BEING ELECTRICALLY CONNECTED TO THE OTHER CONTACT OF SAID PAIR; BRUSH MEANS SECURED TO SAID SUPPORTING MEANS FOR ENGAGING SAID SLIP RINGS;