Timer mechanism

Claim 1

IN A DISTRIBUTOR, A STATIONARY HOUSING; A ROTATABLE DRIVE SHAFT PROJECTING THROUGH SAID HOUSING; A PAIR OF OPPOSITELY DISPOSED BRACKETS PROJECTING INWARDLY OF SAID HOUSING ADJACENT THE UPPER END THEREOF; A METALLIC ANNULUS RESTING ON SAID BRACKETS; AN INSULATING PLATE; SCREWS PROJECTING THROUGH SAID PLATE AND THROUGH SAID ANNULUS AND THREADED INTO SAID BRACKETS FOR CLAMPING SAID ANNULUS BETWEEN SAID BRACKETS AND SAID INSULATING PLATE; SAID SHAFT BEING GROUNDED; A PLURALITY OF SPACED APART CONTACTS ON SAID PLATE ADAPTED TO BE CONNECTED TO A PRIMARY COIL IN AN IGNITION SYSTEM, SAID CONTACTS LYING WITH THEIR UPPER ENDS FLUSH WITH THE UPPER FACE OF SAID PLATE; A METALLIC RING FIXEDLY MOUNTED ON SAID SHAFT FOR ELECTRICAL CONNECTION THEREWITH ABOVE SAID PLATE; SAID RING HAVING AN AXIAL PASSAGE FORMED THERETHROUGH; A PLUNGER LOOSELY POSITIONED IN SAID PASSAGE AND A SPRING ON SAID RING ENGAGING ONE END OF SAID PLUNGER FOR FORCING THE SAME INTO ENGAGEMENT WITH THE UPPER SURFACE OF SAID PLATE, THE LOCATION OF SAID PLUNGER ON SAID RING BEING SUCH THAT THE CONTACTS ON SAID PLATE WILL BE SUCCESSIVELY ENGAGED UPON THE ROTATION OF SAID RING.