US1107595A - Clamping-ring for pipe-coupling. - Google Patents

Description

S. R. DRESSER.

GLAMPING RING FOR PIPE COUPLINGS.

APPLICATION TILED JUNE 6, 1907.

v Patented Aug. 18, 19M

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GLAMPING RING FOR PIPE COUPLINGS.

APPLICATION FILED JUNE 6, 1907.

Patented Aug. 18, .1914.

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SOLOMON R. DRESSER, OF BRADFORD, PENNSYLVANIA, ASSIGNOR TO S. R. DRESSER- MANUFACTURING- COMPANY, OF BRADFORD, PENNSYLVANIA.

CLAMPING-RING FOR PIPE-COUPLINGS.

To all whom it may concern:

Be it known that I, SOLOMON R. DRESSER, a citizen of the United States, residing at Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Clamping- Rings for Pipe-Couplings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention consists in the novel features hereinafter described, reference being had to the accompanying drawings, which illustrate one form in which I have contemplated embodying my invention and several slight modifications thereof, and said invention is fully disclosed in the following description and claims.

Referring to the said drawings, Figure l is a perspective view of a skelp or bar from which my improved clamping ring is formed. Fig. 2 is a perspective View of a piece of said skelp or bar bent into circular form in the plane of the plate or bottom portion thereof, preparatory to welding, the meeting ends being slightly separated for greater clearness of illustration. Fig. 3 is a sectional view of the finished ring. Figs. 4 to 8 inclusive are sectional views of similar rings made from skelp or bars having a slightly modified cross section.

In the manufacture of clamping rings for pipe couplings from wrought metal, such as wrought iron or steel, on a large scale and with economy of production, it is extremely important to prevent as far as it is possible, all waste of the material from which said rings are made. Such waste of material occurs to a considerable extent where the rings are cut, stamped or forged from flat sheet metal, which is bent intothe desired final shape, and it is the object of my invention to provide a ring which can be made with practically no waste whatever, and which will yet provide all the advantages of wrought metal. clamping rings.

In carrying out my invention I first roll a skelp or bar having substantially the cross section required for the finished ring, and comprising a flat or substantially flat base or plate portion A, and a longitudinal rib B, projecting substantially perpendicularly from one face of said plate portion, and dis posed between the edges of the same. The

Specification of Letters Patent.

Application filed June 6, 1907.

Patented Aug. 18,- rare.

Serial No. 377,636.

rib B is ordinarily disposed closer to one edge a of said plate portion, which is the inner edge of the same when bent into ring form, as hereinafter described, and said rib is preferably made thicker adjacent to its union with the plate portion forming the concave portions 1) b on either side of the rib. The upper surface of the plate portion adcent to the outer edge a is preferably beveled slightly from the curved or concave portion b, outwardly so that the plate portion is thinner adjacent to its outer edge than at its inneredge as shown-in Figs. 1, 2 and 3. A section of the skelp or bar, so formed, is bent into circular form in the plane of the plate portion A, as shown in Fig. 2, by any suitable means, and the meeting ends are brought into suitable juxtaposition to enable them to be welded by any suitable welding process. In the present instance Fig. 2 shows the ring bent, and the ends of the skelp or bar cut perpendicularly for butt welding, but the skelp may be lap welded, and the ring may be hammer welded, or electrically welded, or otherwise, as found most desirable. Fig. 2 shows the ends of the skelp separated slightly to facilitate the illustration of the same.

When the ring is formed the rib B will form an annular flange, as shown, projecting laterally from one face of the annular plate portion A. The part of the plate portion A exterior to the web or flange B is provided with bolt holes a preferably oval, or elongated in one direction, as shown in Fig. 3 and indicated in dotted lines in Fig. 2. The bolt holes are preferably formed after thewelding of the bar, but they may be formed in v,

the bar or skelp before welding if preferred.

In bending the blank into ring form it will be seen that the thicker part of the plate portion which lies adjacent to the edge a within the annular flange formed by the rib B will be upset and thereby increased in thickness and strength, while the outer part of the plate portion will be thinned. The effect of the bending operation is, therefore, to upset and increase the thickness and strength of the inner portion of the plate member which constitutes the base of the packing recess, and is subjected to the great est strain when the ring is in use in the coupling of which it forms a part, as the strain of all the bolts, is concentrated upon this inner portion of the ring to compress the packing ring and effect a tight joint. It

is not necessary that the outer portion of the plate member, which is obviously of greater diameter than the inner portion should be as thick as said inner portion, as the strain of the bolts on said outer portion is more widely distributed. It is also to be noted that the ring is used without machining and that the skin of the metal is unbroken on any portion of the ring. The annular rib B of the finished ring (see Fig. 3) with the part of plate portion A located interiorly thereof, forms an annular recess indicated at C, Fig. 3, for the reception of an annular packing or packing ring (not shown).

In Figs 4 to 8 inclusive, I have shown seetional views of slightly modified forms of rings, made from bars or skelp having slightly different cross sections, to that shown in Fig. 1 but within the scope of my invention and the cross section of said bar or skelp may be further varied without departing from the spirit of my invention.

In Figs. 3 and 4, the skelp or bar is rolled with flange a adjacent to the outer edge a of the plate portion A, which when. the bar is formed into a ring and welded, forms a reinforcing rib or flange at the outer edge of the plate portion of the ring. The other variations are in the distribution of thickness of metal and are evident from an inspection of the figures.

It will be seen that by rolling the bar or skelp in the desired cross section and forming my improved ring therefrom as before described, there is practically no waste of the metal and the rings, while giving the required strength and rigidity, may be very economically produced commercially. It will also be seen that the grain of the metal will extend in a direction around the ring and this, it is found, contributes great strength and toughness to the ring.

What I claim and desire to secure by Letters Patent is 1. The herein described clamping ring for a rubber packed pipe coupling, formed of wrought metal, and comprising an annular plate member disposed perpendicularly to the axis of the ring, and an integral annular flange member projecting from one face of the plate member, and located between the inner and outer edges thereof, said plate member extending a greater distance on the outside of the flange member than on the inside thereof, and being provided with a plurality of bolt holes, the inner face of the flange member being substantially perpendicular to the plane of the plate member, said ring being formed integrally and being welded at one place and having the grain of the metal extending around the ring.

the portion of the plate member exterior to the flange member being both thinner than and wider than the portion within the circle of said flange member and being provided with a plurality of bolt holes between its outer edge and the flange member, suflicient metal being provided in said exterior portion to prevent the weakening thereof by the formation of the bolt holes therein, the inner face of the flange member and the adjacent face of the interior portion of the plate'member forming a packing recess, the said ring being formed of an integral piece of metal having its ends welded, and the grain of the metal extending. around the ring, and said flange member being of greater thickness adjacent to the plate member than it is adjacent to its outer edge.

3. The herein described process of making a wrought metal clamping ring for pipe couplings which consists in forming'a bar of wrought metal having a flat plate portion and a flange portion extending substantially perpendicularly from one face thereof, between its inner and outer edges the exterior portion of the plate member being of sufliciently greater width than the interior portion to provide for the formation of bolt holes therein without unduly weakening the plate member, and said flange portion being of substantially uniform thickness to a line near the plate member and being thickened where it joins the plate member, bending said bar in the plane of the plate member into ring form and welding the ends together to form a ring having an annular plate member and an annular flange member, the metal of the plate member within the circle of the flange member being upset and thickened to form the bottom of a packing recess, and the exterior portions of the plate member lieing thinned, and providing the exterior portions of the plate member with bolt holes.

In testimony whereof I affix my inthe presence of two witnesses.

SOLOMON R. DRESSER.

Witnesses CHAS. J. GREGG, C. C. CoMFoR'r.

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