US1303421A - underwood - Google Patents

Description

L. H. UNDERWOOD.

TANK FOR HOLDING CORROSIVE SUBSTANCES.

APPucATxoN FILED sEPr.13.419\a.

Patented May 13, 1919.

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TANK FORHOLDING CORROSIVE SUBSTANCES. APPLIcAIIoN FILED SEPT. I3. IQIa.

1,303,421. A Patented May13,1919,

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Specification of Letters `Patent. Patented lay 13, 1919.

Application led September 13,1918. Serial No. 253,996.

Be it known that I, LAWRENCE I-I. UNDER- wooD, a citizen of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented a new and useful Improvement in Tanks for Holding Corrosive Substances, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specication, in which- Figure 1 is a plan view of the tank.

Fig. `2 is a vertical section along the line II-II of Fig. 1. y

Fig. 3 is a vertical section along the line III-III of Fig. 1, and

Fig. 4 is a fragmentary view showing the bottom of the ate frame.

The present invention relates to tanks for holding corrosive substances and more particularly to an arrangement of a tank lining together with a removable gate frame, so arranged that the frame can readily be replaced, without disturbing the lining of the tank and at the same time form tight joints to prevent leakage. The present invention is illustrated as embodied in a settling tank for the saturated ammonium sulfate liquor in the lay-product recovery plant for coke ovens.

. The invention, however, is not limited to the type of tank illustrated in the drawings, but may be embodied in other structures.

Referring to the illustrated embodiment of the invention, the settling tank has a' castiron body 1 and a lead lining 2. The ammonium sulfate containing liquor is run into the tank through a pipe 3, and the liquid overows through a lead overflow pipe l. The bottom of the tank is inclined to permit the easy removal of the crystal ammonium sulfate. To permit the removal of the tank contents, two gates, indicated generallyat 5 and 6, are provided. Heretofore, considerable difficulty has been experienced with the acid seeping under the edge of the lead lining at the gates, whenthe same had become worn by the action of the gate and attacking the cast iron body. To overcome this difficulty I have provided the following structure.

'Ihe lead lining 2 is continued through the gate holes 10 and is flanged out over the gate frame receiving faces or seats 11 around the gate openings. The out-turned edge of the lead lining is clamped against the gate receiving seat 11 of the iron body portion by means of the gate frame 12. A number of bolts 13' removably secure the gate frames 12 in place. The gate frames 12 are of a non-corrodible material, preferably bronze, which will also resist wear to a greater extent than lead or any of the softer metals or alloys. The gate frame is provided with a sliding gate 14C, which is raised by means of the pinion 15 engaging the rack 16 on the gate. Beyond the gate frame 12 is a spout 17 of non-corrodible material through which the tank contents are discharged.

As shown in the drawings, particularly in Figs. 1 and 3, the turned-over or flanged edge ofthe lead lining 2 extends between the cast iron body around the gate openings and the gate frame.

In the foregoing specification I have referred to a lead linin but I desire it to be understood that the lining may be formed of any suitable material which will not readily be attacked by the corrosive substance for which the tank is to be used, and the term non-corrodible used in the claims is intended to cover such lining.

This construction provides means whereby the gate frame can readily be removed and replaced when worn without disturbing the lining of the tank or spout.

While the preferred embodiment of the present invention has been specifically illustrated and described, it is to be understood that the invention is not limited to its illustrated embodiment, but may be embodied in other structures within the scope of the following claims:

` l. A tank for holding corrosive substances,

having a body of corrodi'ble material and a lining of non-corrodible material and having a gate opening through a wall of the tank, the lining being continued through the gate openin and turned out over the outer surface of t e tank around the gate opening, and a gate frame of non-corrodible material seated against the out-turned lining, substantially as described.

2. A tank for holding corrosive substances, having a body of corrodible material and a lining of non-corrodible material and having a gate opening through a wall of the tank, and a gate frame of non-corrodible material secured to the tank body at the gate opening, the tank lining being continued between the gate frame and the tank body, substantially as described.

3. Atank for holding corrosive substances having a body of corrodible material and a lining of non-corrodible material and having a lgate opening through a vvall of the tank surrounded by a gate frame receiving seat, and having the tank lining continued over said seat, and a' gate frame removablyl secured to and clamping the lining against-the gate frame receiving seat, substantially as described. c

4. A tank for holding corrosive substances having a body of corrodible material and a lining of non-corrodible material and having an opening through a Wall of the tank,

the lining being continued through the Sarno opening, and a member seated against the tank at said opening and clamping the edge of the lining against the tank, substantially as described.

5. A tank for holding corrosive substances having a body of corrodible metal and a lining of non-corrodible metal, said tank having a flanged outlet, the lining being continued throug'h the outlet and alonothe face of the flange, substantially as described.

In testimony whereof, I have hereunto set my hand.

LAWRENCE H. UNDERWOOD.

Copies oi this patent may be obtained for fLve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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