Fire-Syringe

Pneumatic tinder-box; consists of a piston working air-tight in a small cylinder closed at one end. If a bit of tinder or of cotton moistened with bisulphide of carbon Steam Fire Engine. upright type. with a large heating surface relatively to its volume, so as to get up steam rapidly. The exhaust from the pumps turns into the stack to make a forced draft. Some of the larger engines are self-propellers, so as to do away with horse traction. The rear axle is driven by a chain-gear, and one wheel is fitted with a differential bevel-gear device so as to enable corners to be turned. Large steamers will throw a 14 or 2-in. stream for above 200 ft. horizontally. The height depends mainly on the pre ure and on the length of hose. For one-inch smooth nozzle a pre ure of 50 lbs. per sq. inch at the steamer or hydrant will throw an effective stream 64 feet high when the hose is 50 feet long, 58 feet high when it is 100 feet long, and 48 feet high when it is 200 feet long. When the pre ure is 100 lbs. per sq. inch, the heights are, 89 feet for 50 feet length of hose. 85 feet for 100 feet of hose, and 76 feet for 200 feet of hose. First engine built in England by Bra i thwaite 1829. and in New York by Eric on 1840.