Table of Contents
Multiple Unit Electric Furnaces
FURNACE, Muffle, Multiple Unit, Without Rheostat—An efficient and satisfactory furnace for a variety of laboratory operations, including the drying of precipitates, ash determinations, fusions, ignitions, heat treatment of metals and alloys, and experimental test work.
The safe working temperature, reached in 30 to 35 minutes on standard voltage, is 1750° F. or 955° C. For intermittent periods of comparatively short duration, it may be operated at a maximum temperature of 1850° F. or 1010° C., reached in approximately 50 minutes.
The shell is of sheet steel finished in black, with composition ends, the whole lined with specially moulded insulating slabs of high thermal efficiency. The two leads to each heating unit pass through the back plate to binding posts. The door is of sheet steel lined with insulation and is of the hinged type so constructed that it can be hinged from either the top or the bottom of the furnace chamber.
Both Types 52 and 56 can be operated on either 110 or 220 volts by means of a selective connection on the furnace. Furnaces of standard rating for 110 volts will operate satisfactorily on from 105 to 115 volts. The 220 volt furnace will operate satisfactorily on from 210 to 230 volts. Special windings may be supplied for any voltage up to 250 volts.
Braun Gasoline Furnaces
Complete equipment includes furnace, Cary burner, gasoline tank with fittings, and iron stand.
FURNACE, Muffle, Type No. 33—Muffle, 8x12x5¼ inches. Weights: Net, 300 pounds; packed, 445 pounds.
FURNACE, Muffle, Type No. 35—Muffle, 10x16x6¾ inches. Weights: Net, 515 pounds; packed, 670 pounds.
FURNACE, Combination, Type No. 42—Crucible capacity, 6-20 grams. Muffle, 4¾x8x3 inches. Weights: Net, 275 pounds; packed, 370 pounds.
FURNACE, Combination, Type No. 40—Crucible capacity, 10-20 grams. Muffle, 4x6x10 inches. Weights: Net, 345 pounds; packed, 490 pounds.
FURNACE, Melting, Type No. 10—Holds No. 8 Graphite Crucible. Weights: Net, 195 pounds; packed, 310 pounds.
FURNACE, Melting, Type No. 11—Holds No. 18 Graphite Crucible. Weights: Net, 265 pounds; packed, 390 pounds.
FURNACE, Melting, Type No. 12—Holds No. 35 Graphite Crucible. Weights: Net, 365 pounds; packed, 520 pounds.
TANK, Gasoline—Made of steel and thoroughly tested. Each outfit is supplied with a strong pump, pressure gauge, 12 ft. of ¼ in. iron pipe, two swivel joints and the necessary valves and fittings.
IRON STAND—For use with Braun Size 23½x23½ inches. Height 28 inches. Net weight 90 pounds; shipping weight 115 pounds.
IRON STAND—For use with Braun Furnaces. Similar to No. 31155, but of low form. Size 23½x23½ inches. Height 18 inches.
Braun Oil Burning Furnaces
Complete equipment includes furnace, oil burner, motor and blower, fuel oil tank, 24 feet of ½-inch pipe, and iron stand.
FURNACE, Combination, Type No. 40—Crucible capacity, 10-20 grams. Muffle, 6x10x4 inches. Weights: Net, 352 pounds; packed, 585 pounds.
FURNACE, Melting, Type No. 11—Holds No. 18 Graphite Crucible. Weights: Net, 345 pounds; packed, 545 pounds.
FURNACE, Melting, Type No. 12—Holds No. 35 Graphite Crucible. Weights: Net, 445 pounds; packed, 675 pounds.
Braun Gas Furnaces
Complete equipment includes furnace, gas burner, motor and blower, and iron stand.
FURNACE, Muffle, Type No. 33—Muffle, 8x12x5¼ inches. Weights: Net 347 pounds; packed, 500 pounds.
FURNACE, Muffle, Type No. 35—Muffle, 10x16x6¾ inches. Weights: Net 562 pounds; packed, 730 pounds.
FURNACE, Combination, Type No. 42—Crucible capacity, 6-20 grams. Muffle, 4¾x8x3 inches. Weights: Net, 275 pounds; packed, 370 pounds.
FURNACE, Combination, Type No. 40—Crucible capacity, 10-20 grams. Muffle, 6x10x4 inches. Weights: Net, 345 pounds; packed, 490 pounds.
FURNACE, Melting, Type No. 10—Holds No. 8 Graphite Crucible. Weights: Net, 244 pounds; packed, 365 pounds.
FURNACE, Melting, Type No. 11—Holds No. 18 Graphite Crucible. Weights: Net, 309 pounds; packed, 445 pounds.
FURNACE, Melting, Type No. 12—Holds No. 35 Graphite Crucible. Weights: Net, 411 pounds; packed, 580 pounds.
Braun Cylinder Gas Furnaces
Complete equipment includes furnace, Braun Pro-Pane Burner, burner boss and iron stand.
FURNACE, Muffle, Type No. 33—Muffle, 8x12x5¼ inches. Weights: Net, 270 pounds; packed, 365 pounds.
FURNACE, Muffle, Type No. 35—Muffle, 10x16x6¾ inches. Weights: Net, 490 pounds; packed, 590 pounds.
FURNACE, Combination, Type No. 42-Muffle, 4¾x8x3 inches. Crucible capacity, 6-20 grams, Weights: Net, 177 pounds; packed, 230 pounds.
FURNACE, Combination, Type No. 40—Muffle, 4x6x10 inches. Crucible capacity, 10-20 grams, Weights: Net, 245 pounds; packed, 350 pounds.
FURNACE, Melting, Type No. 10—Holds No. 8 Graphite Crucible. Weights: Net, 172 pounds; packed, 226 pounds.
FURNACE, Melting, Type No. 11—Holds No. 18 Graphite Crucible. Weights: Net, 237 pounds; packed, 309 pounds.
FURNACE, Melting, Type No. 12—Holds No. 35 Graphite Crucible. Weights: Net, 339 pounds; packed, 440 pounds.
BURNER, Braun Pro-Pane—Uses cylinder gas, producing an exceedingly hot, clean, blue flame. Cylinder gas produces more heat than most fuels used with assay furnaces, costs less and is safer. This burner is simply constructed without air adjustments. The force of the gas from the jet entrains air into the mixing chamber, making just the right mixture for complete combustion. No generating, pumping or priming is necessary.
The Braun Pro-Pane burner will not burn in the open. It is used in connection with a burner boss which allows the proper amount of air to enter around the burner. This burner can be used with all sizes of Braun Assay Furnaces. Complete with burner boss.
FURNACE, Oil Burning, Muffle Type, DFC Assay—Complete equipment includes furnace, oil burner, fuel tank, motor and blower, and stand. When ordering, specify the voltage and cycles of the current for driving the motor if A.C . or the voltage if D.C.
FURNACE, Oil Burning, Melting, DFC Tilting—For melting gold or silver bullion, and cyanide precipitates. Complete equipment includes furnace, oil burner, fuel tank, motor and blower, and stand. When ordering, specify the voltage and cycles of the current for driving the motor if A. C. or the voltage if D. C.
GLOVES, Asbestos, Mittens—Reinforced on both sides, fleece lined, with thumb. Length, over all, about 13 inches.
GLOVES, Asbestos, Mittens—Similar to No. 32920, but with extra long gauntlet reaching to the elbow. Length, over all, about 18 inches.
GLOVES, Rubber—For use in chlorination and cyanide plants, etc.; with gauntlet 14½ inches long reaching above the elbow.
GOGGLES, Gas-Tight, Cover—Made of rubber, with glass chambers. Some water is placed in the chambers so that fogging can be eliminated by shaking the head.
GOGGLES—Specially designed of fine quality rubber, mask and cups molded in one piece. Will keep out smoke and gases. Adjustable head band.