Motion transmitting device

Claim 1

A MECHANISM FOR MOVING A MEMBER BACKWARDLY AND FORWARDLY BY EMPLOYING A ROTARY ELEMENT SUCH AS A ROTATABLE SHAFT, COMPRISING FIRST AND SECOND CAM MEMBERS ADAPTED TO BE AFFIXED TO SAID SHAFT FOR ROTATION THEREWITH, A MOVABLE FOLLOWER MEMBER HAVING FIRST AND SECOND ROLLER ELEMENTS IN ENGAGEMENT WITH SAID RESPECTIVE ONES OF SAID FIRST AND SECOND CAMS, SAID ROLLER ELEMENTS BEING LOCATED ON SUBSTANTIALLY OPPOSITE SIDES ON THE CENTER OF ROTATION OF SAID CAMS, A FIRST ROD CONNECTED TO SAID MOVABLE MEMBER AND EXTENDING OUTWARDLY THEREFROM FOR CONNECTION TO A DEVICE FOR MOVING THE LATTER, A SECOND ROD CONNECTED TO SAID MOVABLE MEMBER AND BEING SUBSTANTIALLY PARALLEL TO SAID FIRST ROD AND LOCATED ON THE OPPOSITE SIDE OF SAID MOVABLE MEMBER FROM THE CENTER OF ROTATION OF SAID CAMS, SAID SECOND ROD EXTENDING OUTWARDLY FROM SAID MOVABLE MEMBER FOR CONNECTION TO AN ARTICLE TO BE MOVED, SAID CAM MEMBERS BEING CONJUGATE AND OF A CONFIGURATION TO PERMIT POSITIVE DRIVING OF SAID FIRST ROLLER ELEMENT WITH A FIRST CHARACTERISTIC MOTION BY SAID FIRST CAM IN ONE DIRECTION WHILE THE OTHER ROLLER ELE-