Automatic control positioning means including means for changing speed

Claim 1

IN APPARATUS FOR CONTROLLING THE MOVEMENT OF A CONTROLLED ELEMENT TO A PREDETERMINED POSITION IDENTIFIED BY DATA HAVING A PLURALITY OF COMPONENTS IN DIFFERENT DENOMINATIONAL ORDERS INCLUDING DATA MEANS FOR INDICATING POSITIONAL DATA COMPONENTS OF AT LEAST ONE MAJOR DENOMINATIONAL ORDER AND ONE MINOR DENOMINATIONAL ORDER REPRESENTATIVE OF THE PREDETERMINED POSITION, POSITIONING DRIVE MEANS FOR MOVING THE CONTROLLED ELEMENT TO THE PREDETERMINED POSITION OPERABLE AT AT LEAST TWO DIFFERENT SPEEDS AND HAVING MEANS FOR CHANGING THE SPEED OF MOVEMENT FROM A RELATIVELY FAST SPEED TO A SLOW SPEED WHEN THE CONTROLLED ELEMENT IS SUBSTANTIALLY LOCATED AT A POSITION REPRESENTED BY THE DATA COMPONENT OF MAJOR DENOMINATIONAL ORDER AND FOR STOPPING THE MOVEMENT OF THE CONTROLLED ELEMENT WHEN IT IS LOCATED AT A POSITION REPRESENTED BY BOTH THE MAJOR AND MINOR DENOMINATIONAL ORDER DATA COMPONENTS, AND POSITION SENSING MEANS HAVING MAJOR AND MINOR DENOMINATIONAL SENSORS EACH INCLUDING A PLURALITY OF INCREMENTAL CONTACT MEANS REPRESENTATIVE OF THE DIFFERENT ELEMENTS OF THE RESPECTIVE DENOMINATIONAL ORDERS AND A MOVABLE BRUSH MEANS ADAPTED TO SELECTIVELY ENGAGE A SELECTED ONE OF THE INCREMENTAL CONTACT MEANS AS A FUNCTION OF THE POSITION OF THE CONTROLLED ELEMENT, THE MOVABLE BRUSH MEANS OF THE MINOR DENOMINATIONAL SENSOR BEING ADAPTED TO BE SELECTIVELY BROUGHT INTO OPERATIVE ENGAGEMENT WITH THE RESPECTIVE INCREMENTAL CONTACT MEANS OF THE MINOR DENOMINATIONAL SENSOR WHEN THE CONTROLLED ELEMENT IS SUBSTANTIALLY LOCATED AT A POSITION REPRESENTED BY THE DATA COMPONENT OF THE MAJOR DENOMINATIONAL ORDER, THE POSITION SENSING MEANS COMPRISING SELECTIVELY ENERGIZABLE FIRST CONTROL MEANS FOR EFFECTING THE CHANGE IN SPEED OF MOVEMENT FROM FAST TO SLOW SPEED WHEN THE MAJOR DENOMINATIONAL SENSOR BRUSH MEANS ENGAGES A SELECTIVELY ENABLED FIRST ONE OF THE MAJOR DENOMINATIONAL INCREMENTAL CONTACT MEANS, MEANS RESPONSIVE TO THE DATA INDICATING MEANS FOR SELECTIVELY ENABLING SAID FIRST ONE OF THE INCREMENTAL CONTACT MEANS, SELECTIVELY ENERGIZABLE SECOND CONTROL MEANS FOR EFFECTING THE OPERATIVE ENGAGEMENT OF THE MOVABLE BRUSH MEANS AND CONTACT MEANS OF THE MINOR DENOMINATIONAL SENSOR WHEN THE MAJOR DENOMINATIONAL SENSOR BRUSH MEANS ENGAGES A SELECTIVELY ENABLED SECOND ONE OF THE MAJOR DENOMINATIONAL INCREMENTAL CONTACT MEANS, AND MEANS RESPONSIVE TO THE DATA INDICATING MEANS FOR SELECTING SAID SECOND ONE OF THE INCREMENTAL CONTACT MEANS.