Патент USA US2111041код для вставки
March 15, 1938. 'J, B, BRENNAN ELECTROLYTIC CELL File'd May 14, 1935 FIG. 2 2,111,041 2,111,041 Patented Mar. 15, 1938 UNITED STATES PATENT OFFlCE 2,111,041 ELECTROLYTIC CELL Joseph B. Brennan, Fort Wayne, Ind. Application May 14, 1935, Serial/ No. 21,429 12 Claims. (Cl. 220-89) My invention relates to electrolytic cells and more particularly to an improved method of seal ‘This elevation in temperature'may be due to a number of reasons, as is well known to those ing and venting electrolytic cells, as electrolytic condensers. Such electrolytic condensers usually versed in the art; and, when arising from oper ating conditions, is always accompanied by gas 5 have one or more ?lm-forming electrodes sur rounded by a suitable electrolyte, or multiple elec trodes and electrolyte therebetween. The capac ity elements of a condenser are usually put in a container, which may consist of a cylindrical ' 10 tube of aluminum. In service, such condensers have a metallic cap spun into at least one end of the container. The usual practice at present has been to use a gasket in sealing the cap to the top of the container, 15 and a separate venting means‘is usually provided, consisting of a fusible metal and an ori?ce in said cap or a rubber member having an ori?ce in said rubber member. ‘Another combination vent and sealing means 20 now in use consists of a,gasket made by cutting a vent is to sandblast one or more of these sur faces and then deposit a fusible substance, as wax, thereon: or metallic particles may be sprayed on one or more of these surfaces and wax depos ited thereon subsequently; or the surfaces may 15 be treated chemically and roughened, as by etch ing, and a fusible substance deposited thereon. A further means of accomplishing the purpose of this invention is to cover the faces of the ?ange to be used in sealing with hard particles, out annular pieces of material from a sheet of as of sand or metal, having a fusible substance cloth impregnated with a substance such as wax. mixed therewith, or a layer of a fusible substance, as of Wax, deposited thereon, either before or sub Objection has been found in the use of this latter type of sealing and venting means, due to-the fact 25 that the cloth itself may act as an effective seal and not have any venting characteristics, in case the cloth is too highly compressed when the cap‘ and the end of the container are spun or forced together. ~30 within the condenser which may, if not relieved adequately, cause an explosion. Thus, this vent ing and sealing means operates in the nature of a safety device. Another method of providing a spacing means for the metallic surfaces which are to be used as‘ 10 In my invention I have been able to overcome this latter difficulty and also to provide a positive - spacing means between the cap face and the face of the end of the container. This is accomplished by roughening either of these faces or both and coating said roughened face or faces with a mate rial such as wax, which, when an elevated tem perature is attained in the operation of the con denser, will fiow from between the faces of the cap and the end of the container, permitting 40 gases which develop within the condenser to es sequent to the operation wherein the particles 25 are deposited thereon. As another means, a layer of fusible substance may be deposited on one ormore of the metallic surfaces which are to be juxtaposed and a ?brous ?ock attached thereto, as by spraying an air blast while the fusible substance is in a par tially liquid condition, so that the particles of ?ock will form a layer thereon and act as a spac ing means. ' In the drawing forming a part of this speci?ca tion Figure 1 is a section showing the cap such as is ordinarily used for sealing the container of a ’ cell of the type described. This cap may con sist of aluminum or other metal which is formed in a punch press operation. At the same time this cap is formed into the shape shown in Fig 40 ure 1, an embossed surface may be formed there cape without damage to the condenser when in operation. As a means of roughening, embossing on by well-known means. Figure 2 is an ordinary type wet electrolytic or knurling is satisfactory. container wherein the container (5) of electro In this way economy is e?ected by the elimin lyte (l) and the electrode (6), with ariser (l0) 45 ation of the use of cloth or such material.‘L The roughening operation is accomplished at the same ' extending outward therefrom and having a seal time the cap is formed, or at the same time the ing means (9), and surrounded by a neck (8), has a ?ange (4) at the top thereof. The shape ?ange is formed on the end of the container sub sequently, and before sealing, either one or both of the ?ange (4) conforms to the shape of the 50 of these faces are coated with a substance such embossed face (2) of the cap (I). The usual 50 as wax, and a positive spacing means is secured. method of attaching the cap (I) to the con tainer (5) is by spinning the ?anges (2 and 4) Such a venting and sealing means is particular ly applicable to the so-called wet condenser, or together, after the faces thereof have been placed to any electrolytic cell which, in operation, is together. Prior to this spinning operation a layer 55 characterized by an elevation in temperature. of fusible substance (3) such as wax‘is coated, 55 2 2,111,041 as with spraying or with a brush, onto the peripheral ?ange of the cap ( l ) . . Referring to Figure 3 of my drawing, wherein surface. ‘ the manner of sealing is shown, the embossed face (2) of the cap (I) is mechanically attached to the ?ange (4) of the container in such a way 6. A vent for an electrolytic cell comprising a non-compressible porous spacing means, the pores thereof being sealed with a fusible sub that when an elevation in temperature, which may result from operation of the condenser, is attained, the fusible substance, such as Wax (3), stance. ’7. In combination, a vent and seal comprising 10 melts and flows by gravity or/and gas pressure from within the interstices or ori?ces produced by the embossing (2). While I have described a speci?c instance of my invention, and while this illustrates its appli 15 cation speci?cally, I do not wish to be limited either in constructive details or application porous, rigidly-spaced metallic surfaces‘ sealed with a fusible material therebetween. 10 8. A seal and vent comprising an embossed metallic surface juxtaposed on asecond metallic surface, and a layer of a fusible material there between. v 9. A vent and seal comprising a reticular me 15 tallic spacer and a fusible ?ller therefor, which thereby, but desire my claims to be construed as acts as a seal. broadly as permissible, in view of the prior art. 10. In combination, in an electrolytic device, spaced metallic surfaces, at least one of which surfaces is roughened, and a fusible, liquid tight 20 seal disposed between said metallic surfaces. 11. An electrolytic cell comprising in combi What I claim is:- 20 prising a roughened metallic surface sealed with a fusible substance against an adjacent metallic’ > 1. A sealing and venting device for an electro lytic cell comprising rigidly shaped surfaces, spaced apart by a. rigid porous means, the pores thereof being ?lled in with a fusible sealing material. 25 2. A venting and sealing means for an elec trolytic cell comprising juxtaposed surfaces, one of which is embossed, the embossings thereof be ing ?lled with a fusible substance.’ 3. A venting and sealing means for an elec~ 30 trolytic cell comprising a metallic porous spacing means, the ori?ces of which are sealed with a fusible substance. 4. A fusible vent consisting of a. porous me tallic structure, the pores of which are sealed 35 with wax. 5. A vent for an electrolytic condenser com - nation a container for electrolyte, a closure therefor, said container and closure having juxtaposed surfaces, rigid reticular spacing 25 means for maintaining said juxtaposed surfaces in spaced relationship, and a layer of fusible sealing material disposed between said surfaces. 12. An electrolytic cell comprising a container for electrolyte, a closure member therefor, said 30 container and closure having juxtaposed sur faces, at least one of said surfaces being rough ened and the space between said surfaces being sealed with a fusible material. 35 JOSEPH B. BRENNAN.