Apparatus for incubating eggs

Claim 1

APPARATUS FOR INCUBATING EGGS COMPRISING A CABINET HAVING A TOP, BOTTOM, SIDEWALLS AND END WALLS, A ROW OF HORIZONTALLY MOVABLE EGG RACKS WITHIN THE CABINET, EACH RACK BEING ADAPTED TO CONTAIN A PLURALITY OF EGGS ALL AT THE SAME STAGE OF INCUBATION WITH ADJACENT RACKS CONTAINING EGGS IN DIFFERENT STAGES OF INCUBATION IN A SERIES FROM EARLY STAGE EGGS IN THE RACK AT ONE END OF THE ROW TO LATE STAGE EGGS IN THE RACK AT THE OTHER END OF THE ROW AND INTERMEDIATE STAGE EGGS IN A RACK INTERMEDIATE THE SAID END RACKS, A LOW PRESSURE PLENUM CHAMBER AT ONE END OF THE CABINET ADJACENT THE SAID ONE END OF THE ROW AND SPACING SAID ONE END OF THE ROW FROM ONE END WALL OF THE CABINET A DISTANCE AT LEAST EQUAL TO THE LENGTH OF ONE RACK AND FORMING AN EGG RACK PASSAGEWAY AT LEAST AS WIDE AS A RACK, A HIGH PRESSURE PLENUM CHAMBER AT THE OTHER END OF THE ROW AND SPACING SAID OTHER END OF THE ROW FROM THE OTHER END WALL OF THE CABINET A DISTANCE AT LEAST EQUAL TO THE LENGTH OF ONE RACK AND FORMING AN EGG RACK PASSAGEWAY AT LEAST AS WIDE AS A RACK, MEANS DEFINING AN AIR FLOW PASSAGE FROM THE HIGH PRESSURE PLENUM TO THE LOW PRESSURE PLENUM LONGITUDINALLY OF THE CABINET THROUGH THE RACKS IN SAID ROW, MEANS DEFINING A RETURN AIR PASSAGE LONGITUDINALLY OF THE CABINET FROM THE LOW PRESSURE PLENUM TO THE HIGH PRESSURE PLENUM, AIR IMPELLER MEANS FOR FORCING THE AIR TO FLOW FROM THE LOW PRESSURE PLENUM TO THE HIGH PRESSURE PLENUM THROUGH SAID RETURN AIR PASSAGE, AND MEANS ON WHICH SAID RACKS ARE MOVABLE LONGITUDINALLY OF SAID CABINET AND AGAINST THE DIRECTION OF AIR FLOW THERETHROUGH, SAID LOW PRESSURE PLENUM HAVING A RACK INLET THROUGH WHICH A RACK CONTAINING FRESHLY SET EGGS IS ADMITTED TO THE CABINET AND ADDED TO SAID ONE END OF THE ROW, SAID HIGH PRESSURE PLENUM HAVING A RACK OUTLET THROUGH WHICH A RACK CONTAINING LATE STAGE EGGS IS REMOVED FROM THE SAID OTHER END OF THE ROW AND DISCHARGED FROM THE CABINET.