GB103288A - Tanks for Rust Proofing Metals. - Google Patents

Abstract

103,288. Parker, W. C. Jan 12, 1916, [Convention date]. T a n k s , specially adapted for rust-proofing metals, are made double so that the liquid in the outer tank may be heated and may flow into the inner tank without disturbing any sediment in the latter. The inner tank 24 is supported by I-beams 22 on the bottom of the outer tank 12, which in turn is supported by pillars 10 with a casing 2 lined with asbestos 3. The side and end plates 1, 2 of the casing may be secured by bolts 4, Fig. 5. The outer casing wall 2 and the outer tank wall 14 are secured by an angle bar 16 and bolts 17, Fig. 6. A gas-burner pipe 5 extends below the plate 12, and the combustion products escape by the pipe 18. The inner tank is provided with holes 26 near the top, or its rim may be at a suitable level below the top of the outer tank, so that water circulates from the outer to the inner tank without disturbing sediment in the latter. A flange 33 projecting inwards may be provided on the outer tank to prevent the liquid from boiling over. The bottom plate 23 of the inner tank is provided with an opening 27, Fig. 7, having a short pipe 29 projecting upwards and provided with a weighted valve 30. When the valve is removed, the inner tank may be slowly lifted out so that only the bottom layer of liquid 'containing the sediment remains, which may then be drained out and the tank washed, on unscrewing the tube 29.