Impact test machine

Claim 1

IMPACT TEST APPARATUS, COMPRISING: SUPPORT BASE MEANS; YOKE-SHAPED, ANVIL MEANS MOUNTED ON AND AFFIXED TO SAID SUPPORT BASE MEANS FOR CARRYING A TEST SPECIMEN; VERTICAL POST SUPPORT MEANS COUPLED TO SAID BASE MEANS; AXIS-DEFINING, ROTARY BEARING, HOLLOW AXLE, SUPPORT MEANS AFFIXED TO AND EXTENDING FROM SAID VERTICAL POST MEANS; ROTARY BEARING MEANS HAVING AN INNER RACE AFFIXED TO SAID AXLE MEANS; A DISC-SHAPED PLATE CENTRALLY SUPPORTED ON SAID BEARING MEANS FOR ROTATION ABOUT SAID AXIS; PENDULOUS MEANS INCLUDING A SECTORIAL, ROTATBLE PENDULOUS PLATE MEMBER COAXIALLY PIVOTALLY SUPPORTED ON SAID BEARING MEANS ADJACENT SAID DISC PLATE FOR ROTATION THEREWITH ABOUT SAID AXIS IN A CIRCUMFERENTIAL PATH; ADJUSTABLE CLAMPING MEANS COUPLING SAID PENDULOUS MEMBER AND SAID DISC PLATE FOR ADJUSTING THE INITIAL ANGULAR POSITION OF SAID MEMBER RELATIVE TO SAID DISC PLATE; STOP MEANS INCLUDING A SLIDABLE STOP SHAFT EXTENDING THROUGH SAID VERTICAL POST AND ENGAGING SAID DISC PLATE FOR FIXING AN INITIAL POSITION; LEVER MEANS PIVOTALLY LINKING SAID POST AT A FULCRUM POINT AND SAID STOP SHAFT AT AN END; RELEASE MEANS INCLUDING A SLIDABLE RELEASED SHAFT EXTENDING THROUGH SAID HOLLOW AXLE AND SAID POST AND PIVOTALLY LINKING AN END OF SAID LEVER MEANS; RESILIENCE MEANS SUPPORTED ON SAID RELEASE SHAFT AND DISPOSED BETWEEN SAID POST AND LEVER MEANS FOR MAINTAINING SAID STOP SHAFT IN ENGAGEMENT WITH SAID DISC PLATE, WHEREBY THE MOTION OF SAID RELEASE SHAFT IN OPPOSITION TO SAID RESILIENCE MEANS IS TRANSMITTED THROUGH SAID LEVER AND STOP MEANS TO DISENGAGE SAID DISC PLATE AND ENABLE SAID DISC PLATE AND PENDULUM FREELY TO PIVOT ABOUT SAID AXIS, SAID MEMBER AND SAID DISC PLATE HAVING A CENTER OF PERCUSSION EXTERIOR TO SAID PATH; AN ANGLE INDICATOR PLATE MEANS AFFIXED TO AN END OF SAID HOLLOW SHAFT; A ROTATABLE INDICATOR MEMBER COAXIALLY, RESILIENTLY MOUNTED ADJACENT SAID INDICATOR PLATE FOR ROTATION ABOUT SAID AXIS; AND IMPELLER MEANS COUPLED TO SAID PENDULOUS MEMBER FOR ROTATING SAID INDICATOR MEMBER TO PROVIDE AN INDICATION OF THE MAXIMUM ANGULAR DISPLACEMENT OF SAID PENDULOUS MEMBER FROM AN INITIAL POSITION.