Document 71zD7XL66DmOw3Yw1knNmGnZE

Boilers Thatcher Furnace Co. CHICAGO 341 N. Clark St. 131-133-135 W. 35th St. New York NEWARK 42 St. Francis St. Boilers. Ranges. Furnaces, Hot Water Supply and Garage Heaters Thatcher "Round" Boiler Since 1850 Thatcher "Sectional" ' In actual competitive tests with standard heaters of same rated capacity, the ``Thatcher" Round Boiler proved to be the most efficient in heat transmission and length of time between firing periods. Made in four sizes, 19, 22, 25 and 28" firepot. Rated capacities of from 300 to 1000 square feet for the Steam boiler and 500 to 1650 for the- Hot Water boiler. The steam dome has. ample space to in sure dry steam. The water dome is consider ably lower than in most hot water boilers; thin waterways; heavily cor rugated under surface, making it unnecessary to circulate a large volume of water. The Boiler ' Body. The three ports or legs extending into the fire'EBSjSilfiji increase heating effici- ency. cF---- The Boiler Sections. The staggered fire-travel causes the. flames and hot gases to mushroom between sections. The Base is high with ample space under the grates so that the ashpit is readily cleaned. Grates are of the re volving triangular type, easily operated and very efficient. The Butterfly Damper Door is con nected with the draft chamber door in the smoke hood by a chain through regulator arm. The Regulator is of the disc type. Extremely sensitive. Boiler The Sectional Boiler is of the end feed type of square sectional boiler with an unusual amount of prime heat ing surface. The smoke and gases pass THREE times the length of the ` boiler. They come in contact with heating surface at every point. All sections are tested ' to eighty pounds hydro static pressure before leaving plant. Height of feed door allows carrying ample charge of coal resulting in fuel economy. Grates are of heavy crown top pattern. All sections made water tight by a heavy cast iron nipple. Feed door 2$ being particularly wide affords easy access to the interior of the boiler and permits entrance of large shovel into mouth of the feed door, greatly facilitating the firing. Castings accurately machine fitted. Regulator is very sensitive, set to operate the drafts at a very slight steam pressure. Water tight* joint. All sec tions are joined by a heavy cast iron nipple, lathe turned. This boiler is conservatively rated and is the result of over seventy years of study and experience. 256 Control Equipment Johnson Service Company Milwaukee, Wis. BRANCHES: BOSTON, MASS., 31 Waltham Street BUFFALO, N. Y., 2 Erie County Bank Bldg. CHICAGO, ILL., 177 North Dearborn Street CINCINNATI, OHIO, 405 Gwynne Building CLEVELAND, OHIO, 2028 East 22nd Street DENVER, COLO., 517 Boston Building DES MOINES. IOWA, 210 Masonic Temple DETROIT, MICH., 42 Montcalm Street, West INDIANAPOLIS. IND., Ill Pembroke Arcade KANSAS CITY, MO.. 411 East Tenth Street MILWAUKEE, WIS., 149 Michigan Street LOS ANCELES. CAL., 605 Van Nuys Bldg. MINNEAPOLIS, MINN., 308 Third Avenue. South NEW YORK, N. Y., 18 East Twenty-eighth St. OMAHA, NEB., 609 Paxton Building PHILADELPHIA, PA., 1521 Sansom Street PITTSBURGH, PA., Century Building PORTLAND, ORE., 404 Failing Building SALT LAKE CITY, UTAH, 301 Templeton Building SAN FRANCISCO, CAL., 314 Rialto Building SEATTLE, WASH., 452 Colman Building ST. LOUIS, MO., 14 North Twelfth Street CANADIAN REPRESENTATIVE: Johnson Temperature Regulating Company of Canada, Limited OFFICES: CALGARY, ALTA, 605 Second Street, West TORONTO, ONT., 118 Adelaide Street, West VANCOUVER, B. C., 550-6th Avenue, West WINNIPEG, MAN., 259 Stanley Street MONTREAL, QUE-, 284 Beaver Hall Hill Products and Services . Engineers and Contractors for the Control, of Temperature or Humidity for any purpose and over every range used in manufacturing purposes or build ings, furnishing.and installing: Temperature Controlling Apparatus for any and all kinds of heating and ventilating systems. Temperature Controlling Apparatus for any industrial process requiring the medium of heat. Control of Humidity in industrial processes requiring artificial humidity. Temperature Control of hot water tanks and all liquids. Control of Temperatures of refriger ating and cold storage plants.' Thermostat Control of electric motors on automatic refrigerating. Manufacturers of Thermostats and Other Apparatus for the Control of Temperatures and Humidity, including': Pneumatic Room and Insertion Thermostats and Humidostats. Electric Room and Insertion Thermo stats and Humidostats. "Sylphon'.' `Metal Diaphragm and Rub ber Diaphragm Valves. Low Pressure, Limited Capacity, Elec tric Air Compressors. Low Pressure, Limited Capacity, Hy draulic Air Compressors. Air and Water Reducing Valves. Pneumatic Switches or Push Buttons. 257