burley

Claim 1

IN A PRESSURE INDICATING INSTRUMENT OF THE TYPE DESCRIBED, AND WHICH INCLUDES A HERMETICALLY SEALED CASING, A PRESSURE RESPONSIVE ELEMENT SUPPORTED IN THE CASING AND MOVABLE IN ACCORDANCE WITH PRESSURE VARIATIONS TO BE INDICATED BY THE INSTRUMENT, AN ELECTRICAL ELEMENT CONSISTING OF A POTENTIONMETER RESISTANCE SUPPORTED IN THE CASING BY AN INSULATING MEMBER WHICH IS ROTATABLY MOUNTED WITH RESPECT TO SAID CASING, A WIPER ARM COUPLED TO SAID PRESSURE RESPONSIVE ELEMENT AND EXTENDING INTO ARCUATELY MOVABLE ELECTRICAL CONTACT WITH SAID ELECTRICAL ELEMENT, THE COMBINATION OF: AN ADJUSTMENT SHAFT EXTENDING THROUGH THE CASING AND THROUGH THE ELECTRICAL ELEMENT, MEANS INCLUDING A PIN EXTENDING RADIALLY FROM SAID ADJUSTMENT SHAFT INTO SAID INSULATING MEMBER SUPPORTING SAID ELECTRICAL ELEMENT FOR MECHANICALLY COUPLING SAID ADJUSTMENT SHAFT TO SAID ELECTRICAL ELEMENT FOR IMPARTING LIMITED ROTATIONAL MOTION TO THE ELECTRICAL ELEMENT WITH RESPECT TO SAID WIPER ARM UPON ROTATION OF SAID ADJUSTMENT SHAFT, AND A CONFORMABLE SEALING SHROUD TUBE MOUNTED EXTERNALLY OF SAID CASING AND SURROUNDING SAID SHAFT AND HERMETICALLY SEALED AT ONE END TO SAID SHAFT AND AT THE OTHER END TO SAID CASING TO PERMIT LIMITED ROTATIONAL ADJUSTMENT OF SAID SHAFT.