US375547A - Pipe-coupling - Google Patents

Description

(No Model.)

Gr. GIBBS.

Y PIPE GOUPLING. No. 375,547. Patented Dec. 27, 1'88'7.

,/XIMW v WWW Z 2 l UNITED STATES PATENT OFFICE.

GEORGE GIBBS, OF MILWAUKEE, WISCONSIN.

PIPE-COUPLING.

SPECIFICATION formi-ng part of Letters Patent No. 375,547, dated December 27, 1887.

(No model.)

.To all whom it may concerm Be it known that I, GEORGE GrBBs, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certainnew and useful Improvements in PipeGouplings; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to pipe-couplings; and it consists in certain peculiarities of construction and combination of parts, to be hereinafter described with referenceto the accornpanying drawings, and subsequently claimed. In the drawings, Figure 1 represents a sec tional view of my pipe-coupling taken on line 1 1, Fig. 2; Fig. 2, a face view of one of the two sections constituting my device; Fig. 3, a rear view of the other section; Figs. 4 and 5, detail views of an expansible diaphragm and an annulus attached thereto; Fig. 6, a section on line 6 6, Fig. 2; Fig. 7, aplan view of the coupling-section illustrated by Fig. 3; Fig. 8, a side elevation of my device; and Figs. 9 and 10, similar views of the couplingsections detached.

Referring by letter to the drawings, A represents a shell having a reduced extremity, a, to which it is designed to connect a steam or other pipe in any suitable manner. The other extremity of the shell is olfset to form a shoulder, b, and ange c, the latter being iuteriorly provided with screwthreads to engage a screw-threaded ring, B, that has outwardly-extended and inwardly-turned anges d. Interposed between the ring and the shoulder b of the shell A, to forman airtight joint, is a diaphragm, C, of brass or other expansible material. The diaphragm C has a central opening, and secured to this diaphragm in any suitable manner, but preferably by spinning a portion thereof through the opening and over upon said diaphragm, is an annulus, D. The shell A, ring B, and diaphragm C, havinglhe annulus D secured thereto, form one section of my coupling. coupling is preferably composed of a shell, E, and a gasket, F, the latter being made of soft metal or other suitable material,seated insaid shell, as best illustrated in Figs. 1 and 3, and arranged to come against the annulus D when the sect-ions are united; but, if found desirable, the gasket may be omitted.

rIhe other section of my' 'Ihe extremity e of the shell E is designedA wardly-extended ears f,adapted to engage the flanges d on the ring B. The inwardly-turned portions d of the flanges d on the ring B have concave inner faces, and tlfe outer faces of the earsf on the shell E are convex, as best illustrated by Figs. 6 and 7. I

To unite the coupling-sections the shell E is held so that its ears f will lie in the spaces between the flanges d on the ring B, and then given a quarter-turn to bring said ears under the inwardly extended portions d of said ilanges. As the ears f of the shell E enter the flanges d of the ring B, the diaphragm will yield to the pressure occasioned by the convex faces of said ears coming against the concave faces of the inwardlyextended portions d of said iianges. l the centers of the earsf have passed the point of entrance, and then decreases in the same proportion as the remainder of these ears pass said point of entrance.

By the time the cen- This yield increases until ters of the ears are in line with the centers of the flanges their convex faces will iit the concave faces of the inwardly-extended portions d of said anges, and the elasticity of the diaphragm C will force the annulus D against the gasketF to hold said faces in close contact,

and also form an `air-tight joint between the couplingsections, the parts being then in the position best illustrated by Figs. 1 and 8.

The reduced extremities a e of the shells A E have an equal bore that corresponds in diameter to and registers with the openings in the annulus Dand gasket F; but between said extremity of the shell A and the diaphragm C there is an enlarged space or chamber, g, that permits an expansion of steam or other iuid passing through the pipes to exert ak pressure at this point against said diaphragm A C, thus aiding the latter to keep said annulus and gasket in close contact.

The special advantagesof my coupling are, that I obtain the requisite elasticity between the joints by an expansible diaphragm, instead of by a rubber or other perishable gasket, as is ordinarily the case in devices of this character, and the Wear in my coupling is conned to thatoccasioned by two hard or durable surfaces in frictional contact; at the same time the wear is taken up by the expansibility of said diaphragm under pressure and the inequalities of the bearing-surfaces corrected, thereby securing a tight joint.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A pipe-coupling consisting of one seetion provided with au expansible diaphragm havinga suitable opening, and an annulus secured to the diaphragm in register with the opening therein, and anothersection provided with a gasket of suitable material arranged to impinge against said annulus, substantially as set forth.

2. A pipe-coupling comprising a section composed of a shell, a binding-ring provided with outwardly extended and inwardly turned flanges, an expansiblc diaphragm having asuitf able opening, and an annulus suitably secured to the diaphragm in register with the opening therein, and another section composed of a shell provided with ears to engage said flanges, and a gasket seated in the shell to impinge against the annulus, substantially as set forth.

3. Apipevcoupling comprisingasection composed ofa shell, a binding-ring provided with outwardly-extended and inwardly-turned ears, the latter portions of these anges being concave upon their inner faces, an expansible diaphragm having a suitable opening, and an annulus secured to the diaphragm in register with the opening therein, and another section composed of a shell provided with ears having convex outer faces for engagement with said flanges, and a gasket seated in the shell to irnpinge against the annulus, substantially as set forth.

4. A pipe-coupling comprising a section composed of a shell having an enlarged space or chamber, an expansible diaphragm' seated within the shell to form one'wall of said chamber and provided with a suitable opening, and an annulus secured to the diaphragm in register with the opening therein, and another section composed of a shell that connects with the lformer shell and is provided with a gasket to impinge against the annulus, substantially as set forth.

5. A pipecoupling comprising the shell A, having the reduced extremity a, shoulder b, lange c, and chamber g, the ring B, having anges d, the diaphragm C, annulus D, the Shell E, having the reduced extremity e and ears f, and the gasket F, all arranged to operate substantially as set forth.

6. A pi pe-coupling consisting of one section provided with an expansible diaphragm having a suitable opening, and an annulus secured to the diaphragm to register with the opening therein, and another section arranged to impinge against the annulus, substantially as set forth.

7. A pipe-coupling consisting of one section provided with an expansible diaphragm having a suitable opening, au annulus having a portion thereof spun through the opening and over upon said diaphragm, and another section arranged to impinge against said annulus, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee. in the county of Milwaukee and State of Wisconsin, in the presence of two witnesses.

GEORGE GIBBS.

Witnesses:

N. E. OLIPHANT, MAURICE la". FREAR.

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