US592681A

US592681A - Pipe-coupling

Info

Publication number: US592681A
Authority: US
Publication date: 1897-10-26
Anticipated expiration: 1914-10-26

Description

'(No Model.) o

P. BARNHART. PIPE GOUPLING.

Patented Oct. 26, 1897.

W Imidi? UNITED STATEST PATENT FFICE.

i J FRANK BARNHART, OF WARREN, PENNSYLVANIA.:

PlPE-COUPLING.

SPECIFIGATION forming' part of Letters Ifatent No. 592,681, dated October 26 1897. Application filed January 28, 1897. Serial No. 621,097. (No model.)

To all wiz/0m it may con/0877?,.- v p Be it known that I, FRANK BARNHART, a citizen of the United States, residing at Warren, in the county of Warren and State of' Pennsylvania, have invented new and useful Improvements in Pipe-'Oouplings, of which the following is a-spe'cification. w My inveution relates to certain improvements in universal ball-joint flange-couplings for pipes, mypurpose being to provide a coup1 ling of this ty-pewhich can be manufactured at a much lower cost tha'n those now in common use, its simplicity of construction being increased to a marked degree and the numl ber of parts of which it is composed diminished, whereby it can be detached orattached more easily and-quickly than heretofore and requires a less degree of mechanical skill for this purpose.

It is a further object of my invention to provide such a pipe-coupling with a novel construction whereby the joint can be made at any angle permitted by the proj ectin g fianges and at any such angle will pack itself without rcquiring any especial adj ustments of the intermediate metallic packing-ring, which is interposed between the unfinished conveX and concave faces of the coupling.

My invention also has a` further purpose,

which is to enable the washers upon whichthe nuts of the connecting-bolts rest to find their proper level, so that the nuts as they are turned up will draw squ-arely and in the line of the bolts.

The invention consists, to these end's, in the novel features of construction and new combinations of parts hereinafter fully described, and then particularly pointed out in the claims which conclude this specification.

To enable those skilled in the art to which my said invention pertains to fully understand the same, I will proceed to describe said invention in detail, and for this purpose reference will be had to the accompanying drawings, in' which--l Figure 1 is a section taken in the axial line of the coupling. Fig. 2 is a plan View of the male portion of the coupling, showing the unfinished convex face. Fig. 3 is a plan view showing the unfinishedconcaveface of the female portion. Fig. et is a detail view of the metallic packing-rin g.

The reference-numeral 1 in said drawings indicates the male portion of the coupling, which consists of a disk of suitable diameter and thickness provided with a projecting portion 2, which rises from one of its fiat faces anfd is c'oncent'ric with the disk. A central opening passes through both the disk and projection, a female thread being formed therein .to enable the end of a section-'of pipe 4 to be screwed therein. The outer face of the part 2 is conveX and constitutes, practically, a surface of ,a sphere included between two parallel'planes. The parts of the coupling are formed by casting, and the conveX face last mentioned can be left in the condition in which it comes from the mold, as it is not necessary to dress this surface off and give it a finish, as has usually been done heretofore. This fact enables me to m anufacture the coupling at a considerable-reduction in cost. The

unfinished face does not detract from the ap-' when the two members of the coupling are' brought-into proper relations. The formation of the concave recess 6 produces a corresponding projection 7 upon the other face of the disk, and a central opening 8 is provided, having a female thread, so that the section of pipe 9 may be attached by screwing its thrcaded end into said opening.

In uniting the two parts of the coupling a packing-ring 10, formed of malleable cast-copper, is laid in the concave recess 6, the diameter of the ring' being such that it can lie in said recess at a point between the opening 8 and the face of the disk in which said recess is formed. The male projection 2 is then placed in the packing-ring 10, and the parts are secured by bolts 12, which are inserted through openings in both members of the coupling. The square heads of the bolts lie against fiat faces 13, formed by removing por- IOO tions of the projeetion 7 next to the bolt-openings. This construction answers all the pu rposes of a bolt-loek, as it eifeetually prevents the bolts from turning in either direction.

The threaded ends of the bolts 12 pass through openings in the disk 1, which are surrounded byeoneentrie concavities 14:. In these concavities are placed washers 15, their seating-faces being` convex to eorrespond with the concave depressions in which they seat. By this construction the washers can have a universal adjustment in their seats, and when the nuts 1G are turned upon the threaded ends Of the bolts 12 until theybear upon the washers 15 with force the latter will readily seek a position in which the nut will bear uniformly upon its face, and thus exert its strain in the longitudinal line of the bolt.

The invention, as will be seen, consists of very few parts, all having great simplicity of construction. It can bemanufactured at a very small expense, as I avoid the necessity of dressin g off and finishing the two adjacent or engaging faces of the two parts composing the eoupling.

That I claim isl. A pipe-eoupling, consisting of two disks having bolt-holes, one disk formed integral with a central convex projection having a central serew-threaded opening into which the end of one pipe is screwed, and the other disk formed integral with a corresponding central eoncavity having a central .screwthreaded opening into which the end of the other pipe is screwed, a inetallic paeking-ring arranged in the concavity and bearing against the convex projection, and clainping-bolts passing through the bolt-holes of said disks at points around the concavity and concave projection, for drawing the parts together and compressing the metallic packing-ring, substantially as and for the purposes described.

2. In a pipe-eoupling the combination with two disks one having a eonvex projeetion and a section of pipe entering an opening through said projection, and the other having a concave recess of greater diameter than the convex projection and provided with a similar section of pipe, a paeking-ring of malleable cast-eopper arranged between the concave and convex surfaces, bolts passing through openings in both disks, the openings around the threaded ends being surrounded by concentric coneavities, washers having convex faces to seat in said concavities, and nuts turned on the bolts and against said washers, substantially as described.

3. In a pipe-eoupling the combination with two seetions of pipe of disks on the ends of said pipcs, one of said disks havingaconvex projection and the other disk having a concave recess of greater diameter, a lnetallic packing-ring interposed between the eoncave and eonvex surfaces bolts inserted through openings in said disks, their angular heads lying close to flat faces in a projection on one disk to prevent turning, washers having eonvex faces seated in concentrie eoncavities surrounding the openings that receive the threaded ends of the bolts, and nuts turned on the latter, snbstantially as deseribed.

In testimony whcreof I have hereunto set my hand in presence of two subscribing witnesses.

` FRANK BARNIIART.

Titnessesz O. E. BonDwnLL, D. I. BALL.