Патент USA US2136734код для вставки
Nov. 15, 1938. H. B. DENMAN r LAMINATED GASKET 2,136,734 Filed NOV. ZO, 133e Zßgyl ij( J5 _16 , -l ¿wil/w ß ï _.v, w W M Stro: “cada Patented _ Nov. ` l 5, l 938 , 2,136,734 UNITED STATES PATENT OFFICE 2,136,734 LAMINÁTED GASKET Harry B. Denman, Birmingham, Mich., assignor to Detroit Gasket & Manufacturing Company, Detroit, Mich., a corporation of Michigan Application November 30,1934, serial No. 755,483 _ 2 claims. The present invention relates to gaskets par ` ticularly useful in association with automotive (ci. ess-_1) ' by mixing together in a suitable rubber mill a engines, but equally applicable for sealing all `rubber mixture comprising rubber and asbestos or comminuted c'ork or both. To this is added types of joints. ` An important feature of the invention resides suitable vulcanizing and accelerating and acti Vating ingredients as well understood in the art. 5 in its int'egral‘character, that is, the gasket con sists of an integral layer >which is interposed The rubber mixture ai‘ter being prepared in the rubber mill is extruded to »the form shown for ' between the joint surfaces, as for example be example in Figure 1 or any4 desired size` and tween the carburetor and manifold, and does not 10 vrequire the interposition of separate, i. e. un shape; the rubber mixture also is formed into connected superposed gasket layers-adjacent the sheets from which gaskets of suitable size and 10 joint surfacesas now required and customary shape will be cut or stamped, Where the ma with certain types~ of carburetor manifold terial is extruded, the tube is cut olf to give pre gaskets. 15 A further object of the invention is to provide a gasket which may be formed to have a varied determined desired thickness and, of course, where the gasket is punched from a sheet, the sheet will be controlled to the ~proper gauge or 15 range or coefficient of` flexibility and resiliency thickness. 'I'he unvulcanized body produced varying from extreme pliability and resilience to either by extrusion and cutting or sheeting and punching is indicated uin Figure 3 at I3. There 20 a hardness resembling hard rubber. The gasket ` is then placed on one or both sides of the core or is possessed of high tensile strength and is re body I3 a layer of gasket material I4, as shown sistant to the action of rheat, Water, gases and'- in detail in Figure _9 and which is `of the type mineral oils; inother words to all of the _vari ous infiuences surrounding'the normal operation shown and described in the United States Patent 1,776,140. This gasket materialv comprises a of an internal combustion engine. " ' layer of asbestos or other cushion material 20 Referring to the drawing, Figure 1 isI a top elevation lof a representative upon both sides as shown or upon one side only, gasket made in accordance with this invention. of a, layer of metal insert material I9. The in sert material is provided with projections which Figure 2 is a side elevation. l are embedded in the cushion material as shown. ‘Figure 3 4is a side elevation with the compo 30 ents of the gasket shown in separated relation.` Referring to Figure 3, there is illustrated theL superposed relation of the layer I4 and the layer Figure 4 is a sectional view showing the com or core I3. In the particular instance shown, ponents of the gasket in position. , Figure 5 is a sectional View showing the finally completed gasket. \ v35 two layers I4 are utilized. ' 20 « 25 . 30 ' ` The unvulcanized core having the superposed or surface layers I4 as shown in Figure 4 is now Figure 6 is a side elevation of a modification. vulcanized under heat and in a suitable Figure 7 is'a sectional view of the gasket shown ` mold and there is produced apressure homogeneous gasket components in their super >as shown in Figure 5. In the `vulcanizing oper posed relation. ` Figure 8 is a, sectional view of the ñnal product ation the rubber appears to ñow and‘forms a skin I5 on the interior walls of the openings II, 40 and similar to Figure 5, an_d 35 ` ' in Figure cA with i Figure 9 is a sectional view of a layer of gasket material made in accordance with the United States Patent 1,776,140. . Referring to the drawing the numeral I0 indi-` 45 cates a gasket, for example, one suitable for use I2 and on the side of the gasket, which skin ex- 40 tends in some cases slightly over upon the margin of the gasket surface as at I6. This skin or envelope is continuous `about the walls of the, openings and the exposed edge of the gasket and acts to bond the layers I4 to the core I3. In 45 between the carburetor and intake manifold of the vulcanizing action results in sub an internal combustion engine. The gasket has addition, stantially integral adhesive union between the f‘the opening II and rthe bolt holes I2. Other surfaces of the layers I4 and the surfaces o1’ the suitable sizes and shapes of gaskets are, of course, 50 employed at various points on the engine and the" core as at I'I, i. e., the layer I3 is vulcanized and the layer or layers I4, as the case maybe, are 50 present view is purely illustrative. While the ` vulcanized to the-core. There is‘produoedthus a gasket is particularly " designed for .automotive substantially integral gasket having an inner - use, it serves with.` equal success for sealing joints ‘ and relatively thick core vof rubber-asbestos or of various types, l 6,5 Referring to Figure 3, the gasket is produced rubber `comminuted cork or -rubber-asbestos cork, « and surface layers of metal combined 55 2 2,136,784 with .asbestos or other cushion insulating ma terial. This gasket is resilient and ñexible as required since these qualities of course are easily regulable, in that a product having ex treme pliability and flexibility can be produced up to one which is substantially rigid and not unlike hard rubber or a molded resin. The gasket is4 insulative since there is a substantial percentage of asbestos present in the core and 10 since the layer Il includes an insulating ma terial layer or layers as)described in the afore said patent. ‘ / Referring to Figure 6, the core i3 is pro duced by building up a plurality of relatively 15 thin layers I8 of a rubber mixture as hereto fore described, to the desired thickness, super posing thereon a layer or layers of gasket ma terial Il as shown in Figure 7 and vulcanizing to‘produce the integral product having a skin I5 20 shown in Figure 8, which is precisely like that shown in Figure 5, the layers i8 assuming an integral state. All of the gaskets are characterized by- being substantially integral in that the layers I4 are adhesively united to the core throughout their exteriorly as shown at I5. 'I‘his skin is important inthat it completely seals the gasket both on the exposed edges and the walls of the opening il and bolt holes I2. Hence, with a continuousl film, the possibility of disintegration or tearing or rupture is completely avoided. I may use as my cushion mate al asbestos, asbestine, comminuted cork, syn hetic resin, millboard or other similar insulating material. The' various layers may be secured together 10 by grommets, staples, a cement or by vulcani zation or other securing means. Various modifications may be made in the gaskets, all of which are comprehended in the 15 claims appended hereto. I claim: 1. A gasket comprising a layer of rubber com position having on one exposed surface, a layer formed of a metal insert and cushion material layers on each side thereof, said insert having 20 projections embedded in said cushion material layers, the rubber composition layer and the metal insert-cushion material layer being secured together. ' ‘ 2. A gasket in accordance with claim 1 in- surfaces as shown at I1 by reason of vulcaniza tion and a continuous smooth skin, ñlm or en which a metal insert cushion material layer is velope is produced extending about the entire layer. edge portions oi the gasket both interiorly and ' secured to each side of the rubber composition ‘ HARRY B. DENMAN.