Issue 26 and Volume 66.

QUESTIONS AND ANSWERS NOTE—Readers of FIRE AND WATER ENGINEERING are invited to send in questions, which will be answered in the order in which they are received. Names are omitted from questions unless otherwise specified. Thawing Frozen Hydrant with Auto Truck To the Editor: Is there any certain method of thawing out a frozen hydrant with the aid of an automobile fire truck, or motor combination pumper and hose car? With the gradual displacement of horse-drawn machines by motor apparatus this is becoming a paramount question. In our city we use a small portable steamer. Very trulv yours, Rome, N. Y., Jan. 5, 1920. C. W. S. Answer: Yes, there are several methods. Probably the most effective one is that being developed by the New York Fire Department in which the hot exhaust gases from the motor are made to go through a special coiled tube water heater and in…

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