JOHN J. NESBITT, INC.
BUILDING THE NESBITT UNIT VENTILATOR FRANCHISE - 1921 TO 1930
THE NESBITT COMPANY FLOURISHED IN THE DYNAMIC BUSINESS ENVIRONMENT OF THE 1920's, AND WAS INCORPORATED AS JOHN J. NESBITT, INC. IN 1922.  CONTINUING TO KEEP PACE WITH THE NEWEST DEVELOPMENTS IN ITS FIELD, NESBITT BEGAN TO ESTABLISH ITS REPUTATION FOR LEADERSHIP IN RESEARCH AND ENGINEERING.

IN 1924 JOHN J. NESBITT, AS "INVENTOR", FILED TO PATENT THE ONE-PIECE ROLL DAMPER FOR UNIT VENTILATORS.   THIS WAS A NEW AND REVOLUTIONARY DEVICE IN THE INDUSTRY.  IT IS STILL THE SIMPLEST KNOWN METHOD OF ACCURATELY REGULATING THE MIXING OF INDOOR AND OUTDOOR AIR FOR CLASSROOM COMFORT, AND CONSEQUENTLY IS STILL IN USE TODAY.  THE PATENT WAS APPROVED IN 1926.  THE DIAGRAM PAGE FROM THAT PATENT IS SHOWN HERE.

IN AUGUST 1926 NESBITT INTRODUCED THE FIRST LIGHT-WEIGHT COPPER RADIATOR TO THE UNIT VENTILATOR INDUSTRY.  PRIOR TO THAT TIME, HEAVY CAST IRON RADIATORS OR PIPE COILS WERE USED IN THE UNITS.  THIS DEVELOPMENT MADE IT POSSIBLE FOR THE FIRST TIME TO PLACE THE UNIT VENTILATOR MOTOR AND FAN ASSEMBLY BELOW THE HEATING ELEMENT.  A DESIGN IMPROVEMENT THAT CONTINUES TO BE IN USE TODAY
1930 SAW NESBITT INTRODUCE THE FIRST VALVE-CONTROLLED UNIT VENTILATOR.  THIS DEVELOPMENT WAS A MAJOR BREAKTHROUGH THAT FURTHER REVOLUTIONIZED THE INDUSTRY BY MAKING THE REFINED CONTROL OF CLASSROOM TEMPERATURE POSSIBLE.
          THE ABOVE IMAGES ARE FROM THE NESBITT CATALOG OF 1926
LINK HERE TO VIEW A TYPICAL CLASSROOM; OF 1926 FROM THIS CATALOG
IN 1926 THE NESBITT COMPANY MOVED TO PHILADELPHIA, BEGINNING OPERATIONS AT STATE ROAD AND RHAWN STREET IN THE HOLMESBURG SECTION OF THE CITY.  THE FIRST UNIT OF THE COMPANY'S MANUFACTURING FACILITIES AT HOLMESBURG HAD APPROXIMATELY 30,000 SQ. FT. ON THREE ACRES, AND APPROXIMATELY 100 FACTORY EMPLOYEES.  BY THE MID-1950'S THAT WOULD GROW TO THREE UNITS AT THIS LOCATION (PLANTS 1-3) WITH OVER 427,000 SQ. FT. OF BUILDINGS ON EIGHTEEN ACRES, AND SOME 900 EMPLOYEES.
LINK HERE TO VIEW A NESBITT "UNIVERSAL UNIT" PLAQUE FROM THE FAMOUS STEEL PIER CA. 1930
DIVERSIFICATION IN 1930 NESBITT MADE ITS FIRST DIVERSIFICATION, ACQUIRING THE BUCKEYE BLOWER COMPANY OF COLUMBUS, OHIO, THEREBY ENTERING THE UNIT HEATER MARKET.  THIS INCLUDED THE GIANT UNIT HEATER AND COMPLETE LINE OF PROPELLER FAN UNIT HEATERS DEVELOPED BY BUCKEYE.  FOR A NUMBER OF YEARS BUCKEYE WAS OPERATED AS A SEPARATE SUBSIDIARY OF NESBITT.
LINK FORWARD TO GROWING AND MEETING THE CHALLENGES - 1931 TO 1940
LINK BACK TO THE BEGINNING YEARS - 1912 TO 1920