Патент USA US2404777код для вставки
Jmiy 30,_ 1946‘. w. s. GAINES 2,404,777 CONTAINER “ AND CLOSURE THEREFOR Filed Jan. 29, 1942 2 Sheets-Sheet 1-’ - 17¢ YMW @MS ' / ammwg July 30, 1946. W. S. GAINES 2,404,777 CONTAINER AND CLOSURE THEREFOR Filed Jan. 29, 1942 2 Sheets-Sheet 2 i796 3mm Patented July 30, 1946 2,404,777 UNITED STATES PATENT OFFICE 2,404,777 _ CONTAINER AND CLOSURE THEREFOR Walter S. Gaines, Chagrin Falls, Ohio, assignor, by mesne assignments, to Republic Industries, Inc., New York, N. Y., a corporation of Delaware Application January 29, 1942, Serial No. 428,731 1 Claim. (01. 220-61) ’ 1 This invention relates‘ to containers and par ticularly to containers of the class havingr walls coated with vitreous enamel, and provided with closures Operable to close and seal, or open, the same. One of the particularly useful applications of 2 Fig. 1 is an elevational view of a container of the fire extinguisher type embodying my inven tion and with a part broken away for convenience of illustration; ' Fig. 2 is a top plan view of the embodiment of Fig. 1; the invention herein to be described is to the con Fig. 3 is a sectional view taken from the plane tainers of chemical ?re extinguishers; and the 3—3 of Fig. 1; ' invention will therefore, for illustrative purposes, Fig. 4 is a bottom plan view of the embodiment be described herein as applied to that use, al 10 of Fig. 1; ‘ though as Will become apparent hereinafter some Fig. 5 is a. fragmentary longitudinal sectional of the features of the invention, such for example view. of a lower corner of the container of Fig. 1, as the container closure, are applicable to other and the View may be referred to the plane 5—5 classes of containers. ‘ The corrosion-proof properties of a vitreous enamel-coated container adapts it obviously to the ?eld of chemical fire extinguishers, but its application to such use introduces problems to of Fig. 4; Fig. 6 is a view similar to Fig. 5 but referred to the plane 8-6 of Fig. 4; Fig. 7 is a View illustrating a part which is > broken away from Fig. 1; be solved, the most dif?cult of solution being the Fig. 8 is a sectional view to enlarged scale ap provision of a practical corrosion-proof closure 20 proximately full scale, taken from the plane 8—8 which can be manually operated to seal the con of Fig. 2 ;. and tainer after it has been charged and to unseal Fig. 9 is a View similar to Fig. 8 showing a part it and seal it again repeatedly when the charge in a different operative condition. is to be renewed. The problems arise from the Referring now to the drawings, Figs. 1 to 9 fact that the vitreous enamel coating prohibits .25 inclusive, there is shown generally at I the main the use of the usual conventional simple threaded body wall of the container, the upper end of closure, because it is diilicult if ‘not impossible to which is Open, and terminating in an outwardly coat the wall of the container so as not to leave ?aring ?ange i’, which for purposes to be de bare corrodable metal adjacent the threads, and scribed, is generally of frusto-conical form; and because when the wall of the container is made preferably, between the main body and the ?ange of thin steel for purposes of ‘economical manu 2, the diameter of the body is reduced to_form facture, threads of sui?cient depth and strength cannot be formed on it; and if the thin steel enamel-coated wall is put under any considerable bending stress by operating the closure construc tion, it will crack the enamel coat and destroy its corrosion-proof usefulness. a, neck 3. ‘ For purposes of economy the wall of the body is fabricated from sheet steel; and to render the inner wall surfaces corrosion-proof, they are coated with vitreous enamel; and for the sake of appearances as well as to avoid discoloration It is therefore among the objects of the present and rust, the exterior surfaces of the body are also invention: coated with vitreous enamel, and to this end the To provide generally an improved enamel enamel coat is preferably continuous over the in 40 ner coated steel container; and outer surfaces of the body wall. To provide an enamel-coated steel container The lower end of the body is closed by a bot having an improved sealing closure which may tom 3, press-formed from sheet steel, and inserted be opened and closed; within the side wall ! of the body and sealedly To provide generally an improved sealing clo £15 joined thereto as will be described. sure for enamel-coated containers; The enamel coat on the outside of the body wall To provide an improved construction of ?re 6, neck 3 and flange 2 is shown at 5, Figs. 5 and 8, extinguisher container and closure therefor; and on the inside thereof at 6; and the enamel To provide an improved construction of sealing coat on the inside and outside of the. bottom gasket for the closure of a container. ll is shown, in Fig. 5, at 1 and 8 respectively. Other objects will be apparent to those skilled ‘ The bottom wall, which as shown in Figs. 1 and in the art to which the invention appertains. 5 is 01‘ downwardly concave dished form, has a The invention is fully disclosed in the follow peripheral skirt or ?ange 9 telescoped into the ing description taken in connection with the ac lower end of the side wall I. The juncture be companying' drawings in which, .55 tween this skirt and side wall is indicated gen-. 2,4‘04,777 3 -- 4 carrying at their upper ends a pair of-ring sectors 2!l--20, one of the ring sectors having connected erally in Fig. 5, and may be variously constructed and constitutes no essential part of the present invention, and one particular method of making this form of juncture is illustrated and described more completely in the co-pending application of Gaines and Meyers, Serial No. 390,631, ?led April 26, 1941 to which reference may be had. But it may be noted here that the skirt 9 of the bottom, and the lower portion of the side wall I, are in thereto a loop hanger 21. ' Each of the sectors I6, its posts Ill-l9, and its ring sector 22, may be formed all in one piece either by casting the same or by welding the parts thereof‘ integrally together; and the purpose of making two such assemblies separate from each other as described and as plainly indicated in tegrally connected by welding material at 10 ; and 10 Figs. 1 to 3, will now be considered in connection that the outer enamel coats 5 and -8, Fig. 5, may, if desired, be formed continuously over the weld ing material I8; and that between the body wall . I and skirt 9 is corrosion-proof seal of glasslike material integral with the inner enamel coats 6 .15 and ‘I on the side wall and bottom; whereby the juncture is made mechanically rigid and strong >5 . with the closure for the upper end of the con- _ tainer. At 22, see Fig. 8, is a cover element, preferably in the form of a steel disc, enamel coated inside and outside as at 23 and 24 respectively. The pe ripheral portion 25 of the disc slopes oppositely to the slope of‘ the ?ange 2, and this may‘ con - veniently be provided by making the disc 22 of dish form; and preferably the cone angle of the 20 cover portion 25 is made approximately the same are not protected by corrosion-proof material. as the cone angle of the frusto-conical ?ange 2 To further protect the juncture, and to give it and whereby there is no point on the inner wall surfaces of the container at the juncture that a more ?nished appearance, and to cushion it of thebody. the lower end of the container, which, as will be apparent from Figs. 1 and 5, is generally tubular, is embraced by a channel of rubber or like mate rial l2, pro-molded to shape and pressed upon and gripping the said tubular end of the con tainer, see Figs. 5 and 4. , , ’ The inner confronting portions of the sectors Iii-l6 are generally of channel form, as plainly shown in Fig. 8, the ?anges of they channel hav ing'frusto-conical surfaces 26—26 and 21—2'| cor responding approximately to the form of the against shocks which might crack the enamel in the event that the container is roughly handled, frusto-conical ?ange 2 and disc portion 25 re spectively.‘ as With such a construction, and as will now’ It is usually desirable to provide containers of be apparent, when the bolts l8—|8, referred to this ?re extinguisher type with a handle grip on or within the bottom thereof, and such a handle in connection with Figs’. 1 and 3, draw the sec tors I6--l5 toward each other, the peripheral or grip is shownat 13 Figs, 1, ‘l, 6. It consists of _ portion 25 of the cover ‘will be drawn towardthe ?ange 2 with a wedging action; and this is uti a strap or rod of metal extending diametrically across and within the downwardly concave bot lized to mount the cover 22 on the container and to seal it upon the ?ange 2 as follows. tom 4; and the end portions l4 thereof are in Referring to Fig. 9, a gasket or sealing device tegrally joined to the bottom structure as shown shown generally at 28 is made of pliable, yield in Fig. 6, the said end portions 14 being bent down¢ , able, corrosion-proof material, and preferably of wardly to lie generally parallel to the skirt 9 of a malleable metal ‘such as lead. The gasket 28 the bottom, and the lower end thereof being in is preformed from sheet material into the general tegrally joined to the skirt 9 and the side wall form of ‘ an annulus, and comprising axially I by the welding material ill. The rubber chan aligned tubular portions 29 and 3f); integralwith nel l2 embraces the end portion IA of the handle an intermediate portion 3| extending inwardly asshown in Fig. 6. radially, and which in cross-section is of loop Projecting from the side of the container and form as shown in Fig. 9. , integrally joined with the side wall I is a tubular Before putting on the cover 22, one of the tu spout i5 over which the usual ?exible hose of the bular portions, for example the tubular portion ?re extinguisher may be telescoped and attached; and as will be understood without further illustra 50 30 is telescoped downwardly over ‘the ?ange 2, and ‘is of such internal diameter as to substan tion and description, such spout will be attached, tially ?t the periphery of the ?ange. The loop for example by welding, to the wall I before the 3| then lies upon the enamel coat 6 of the flange; enamel coats are applied whereby the spout may The cover 22 is then put into position by tele be enamelled both inside and‘outside with enamel coats continuous with the outside and inside 55 scoping it within the other tubular part 29 of the gasket as shown in Fig. 9, and substantially coatsof the body; such a spout being shown in ?ts therewithin, and rests upon the loop 3| detail in Fig. 7 and illustrated as broken off in of the gasket. The tubular portions 29 and 30 Fig l. ‘ are then bent inwardly and caused to conform Custom and commerce demand that the upper end of a ?re extinguisher of this class be provided 60 respectively to the enamel coats 24 and 5 exter nally of the cover 2| and ?ange 2, being ?nally with an annulus or ring which serves both as a in the condition shown in Fig. 8. carrying handle, and as a support upon which the The wedging sectors IB—IB are then put into ?re extinguisher may stand when turned upside the position of Fig. 8 and the said bolts l8 are down for use; and a hanger by which it may be mounted in the ears IT as described for Figs. 1 supported right side up on a hook or the like when and 3, and the bolts 18 are then drawn up tight not in use; and a closure to seal the container; and these features which have been incorporated I ly, drawing the sectors Iii-l6 toward each other, causing them to exert the aforesaid wedging ac in the present invention will now be described. The closure, externally considered, and as ,, tion. The wedging action, as will be apparent, shown in Figs, 1, 2, and 3, comprises, a pair of 70 tightly clamps the walls of the loop 31 together‘ upon each other and thereby rigidly mounts the arcuate sectors l6—i 6, having'each a pair of lugs cover 22 on the container end. It will also be ‘ or cars l'l—~ll by which they may be clampingly observed from an inspection of Fig. 8 that the drawn toward each other by bolts l8-—l8. Ex enamel coats on both the outer and inner walls tending upwardly from the sectors is a plurality of posts 19-49. preferably two to each sector I6, "15 of both the ?ange 2 and the cover element 22 5 2,404,777 are subjected to the wedging pressure and this produces liquid and pressureproof seals thereat; and that these coats are protected from being mutilated or cracked by the pressure, by the yieldable property of the gasket material. Various materials may be used for the gasket, but as stated, lead is preferred because it is cor 6 While all of the advantages and improvements set forth hereinbefore may be embodied in a container and closure having enamel coated walls, some of the advantages and improvements may be utilized in containers and closures in which the walls are not coated at all, or in which they are coated with coatings that are not non-cor rosion~proof, and because, being malleable, it may rosive. readily be bent to conform to the frusto-conical The invention is not limited in all of its fea shape of the cover and the flange, when the cover 10 tures to the exact details of construction illus is put on as described, so that this operation may trated and described. Changes and modi?cations be performed by hand; and because it will retain may be made within the spirit of the invention its original form of Fig. 9, which facilitates the without sacri?cing its advantages and within the assembling operation. scope of the appended claim. To unseal the container and remove the cover I claim: 22 for the purposes mentioned, the portion 29 A sealing closure for the opening of a steel of the gasket, after removing the clamping sec walled vessel having an outwardly and upward tors Iii-46, may be again bent ‘upwardly into ly ?aring frusto-conical ?ange surrounding the tubular form, and the cover 22 then lifted out; opening, and a coat of vitreous enamel on the and after the charge in the ?re extinguisher has ‘ inside of the vessel extending outwardly over been inspected or renewed, the cover may be the ?ange; a yieldable sealing gasket of gen again replaced and the gasket again restored to erally annular form having its mid-zone folded its sealing condition and the Wedging sectors inwardly on such enamelled ?ange and its lower I6--l 6 again assembled and drawn up tight. And margin turned under the ?ange; a cover over in this manner the cover may be unsealed and lying the opening and having a peripheral frusto removed and again put on and sealed, repeatedly, conical portion; a coat of enamel on the portion the malleable property of lead, when lead is used of the cover engaging the gasket, said gasket hav for the gasket, providing the durability desirable ing its upper margin folded over onto the top in the gasket when thus repeatedly formed and of the cover; and means to force the cover to deformed. 3 0 ward the opening to sealingly press the margins It will be observed that notwithstanding that of the gasket against the under surface of the seal is effected by pressure engagement between flange and the top surface of the cover and press the gasket and the enamel coats on the container its mid-zone between the enamel-coated surfaces and the cover, it is effected in such manner that of the ?ange and cover. there is no liability that the steel coated parts- I’ WALTER S. GAINES. will bend and crack the enamel.