Dryer

Claim 1

A GRAIN DRYER COMPRISING MEANS DEFINING A PAIR OF GRAIN COLUMNS, EACH TERMINATING IN A LOWER DISCHARGE OPENING, HEATING MEANS FOR HEATING AIR, MEANS DIRECTING HEATED AIR THROUGH ONE PORTION OF SAID COLUMNS, METERING CHAMBERS COMMUNICATING WITH RESPECTIVE ONES OF SAID DISCHARGE OPENINGS, METERING MEANS INCLUDING A VANED METERING SHAFT IN EACH OF SAID CHAMBERS FOR CONTROLLING DISCHARGE OF GRAIN FROM SAID GRAIN COLUMNS, A RATCHET WHEEL ON EACH OF SAID METERING SHAFTS, A RECIPROCABLE CROSS BAR ASSEMBLY COMPRISING A CROSS BAR EXTENDING BETWEEN SAID METER SHAFTS AND A PAIR OF LEVERS PIVOTALLY MOUNTING THE ENDS OF SAID CROSS BAR FOR TRANSVERSE MOVEMENT, MEANS PIVOTALLY MOUNTING THE OTHER ENDS OF SAID LEVERS FOR ROTATION ABOUT THE AXIS OF SAID METERING SHAFTS, A PAIR OF PAWLS PIVOTALLY MOUNTED ON OPPOSITE ENDS OF SAID CROSS BAR ASSEMBLY AND ADAPTED TO ENGAGE SAID RATCHET WHEELS, A ROTATABLE MEMBER, MEANS INTERCONNECTING SAID ROTATABLE MEMBER AND SAID CROSS BAR FOR CONVERTING ROTARY MOTION OF SAID MEMBER INTO RECIPROCATING MOVEMENT OF SAID CROSS BAR, MEANS FOR ROTATING SAID ROTATABLE MEMBER SO THAT SAID CROSS BAR IS RECIPROCATED AND SAID PAWLS ALTERNATELY AND INTERMITTENTLY ROTATE SAID METERING SHAFTS IN OPPOSITE DIRECTIONS, AND MEANS FOR ADJUSTING THE EXCURSION OF SAID INTERCONNECTING MEANS, THEREBY TO ADJUST THE AMOUNT OF ROTATION OF SAID METERING SHAFTS FOR EACH RECIPROCATION OF SAID CROSS BAR.