Automatic indexing arrangements for rotary stud switches

Claim 1

AN AUTOMATIC INDEXING ARRANGEMENT COMPRISING A ROTARY STUD SWITCH HAVING A FIXED AND A ROTATABLE MEMBER AND A PLURALITY OF STUDS, A PRIME MOVER FOR ROTATING THE ROTATABLE MEMBER TO ESTABLISH CONNECTION TO THE STUDS IN TURN, A COUPLING MEANS BETWEEN THE PRIME MOVER AND THE ROTATABLE MEMBER SO THAT THE ROTATABLE MEMBER MAY BE MANUALLY ROTATED INDEPENDENTLY OF THE PRIME MOVER, SWITCH MEANS FOR STARTING THE PRIME MOVER AND STOPPING IT WHEN THE ROTATABLE MEMBER HAS ROTATED FROM ONE STUD TO ANOTHER, A SHAFT COUPLED TO ROTATE WITH THE ROTATABLE MEMBER, THE SWITCHING MEANS FOR STOPPING THE PRIME MOVER COMPRISING AN ELECTRICAL CONTACT OPERATED ONCE PER REVOLUTION OF SAID SHAFT, THE SPEED OF WHICH IS RELATED TO THE SPEED OF THE ROTATABLE MEMBER BY THE EXPRESSION S=(360/N)R WHERE S IS THE SPEED IN REVOLUTIONS PER MINUTE OF THE SHAFT, N IS THE ANGULAR SPACING IN DEGREES OF ARC OF THE STUDS OF THE ROTARY STUD SWITCH AND R IS THE SPEED IN REVOLUTIONS PER MINUTE OF THE ROTATABLE MEMBER.