If discharge is carried on at an excessive rate the acetone is drawn
out with the gas and reduces the heat of the welding flame.
For this reason welding should not be attempted with cylinders designed for
automobile and boat lighting. When the work demands a greater delivery than
one of the larger tanks will give, two or more tanks may be connected with
a special coupler such as may be secured from the makers and distributers
of the gas. These couplers may be arranged for two, three, four or five
tanks in one battery by removing the plugs on the body of the coupler and
attaching additional connecting pipes. The coupler body carries a pressure
gauge and the valve for controlling the pressure of the gas as it flows to
the welding torches. The following capacities should be provided for:
Acetylene Consumption Combined Capacity of
of Torches per Hour Cylinders in Use
Up to 15 feet.......................100 cubic feet
16 to 30 feet.......................200 cubic feet
31 to 45 feet.......................300 cubic feet
46 to 60 feet.......................400 cubic feet
61 to 75 feet.......................500 cubic feet
WELDING RODS
The best welding cannot be done without using the best grade of materials,
and the added cost of these materials over less desirable forms is so
slight when compared to the quality of work performed and the waste of
gases with inferior supplies, that it is very unprofitable to take any
chances in this respect.
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