US1136271A - Metallic packing-ring. - Google Patents

Description

H. P. RHODES.

METALLIC PACKING RING.

APPLICATION FILED OCT. 27. 1913.

INVENTOR I ma, Di (Db/(7.).

ATTORNEYS THE NORRIS Pg-JLK: LEA, rnulu-mlnu. WASHINGTON, D. c.

Patented Apr. 20, 1915.

TIT

HAMPTON r. nnonns, or snanvnroiar, LOUISIANA.

METALLIC PACKING-RING.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed October 27, 1913. Serial No. 797,655.

To all whom it may concern:

Be it known that I, HAMPTON P. RHoDns, a citizen of the United States, residing at Shreveport, in the parish of Caddo and State of Louisiana, have invented certain new and useful Improvements in Metallic Packing-Rings, of which the following is a specification.

My invention relates to a sectional metallic packing ring, and more particularly relates to certain improvements upon the piston rod packing ring shown and described in my United States Patent No. 934,627, issued September 21st, 1909.

It is the object of my invention to increase the life or period of efficient utility of the packing ring specified in my previous patent above referred to by slightly changing the construction of the ring as is hereinafter explained. I

With this object in view, my invention has relation to certain novel features of the construction, an example of which is described in the following specification and illustrated in the accompanying drawings, wherein:

Figure 1 is a plan view of my improved sectional metallic packing ring, and Fig. 2 is a view of the same in side elevation.

Referring now more particularly to the drawings, wherein like reference characters designate similar parts in both the figures, the numeral 1 denotes a plurality of similar sections, which together form my ring, the preferred number of these sections being three. The opposing ends of the sections 1 are held in a slightly spaced relation by bonds 2 of soft wire, having their ends molded in the correlated sections 1 or other wise secured thereto. The ring formed by the sections 1 has three faces, one face being flat and lying in a plane transverse with the axis of the ring; another face being cylindrical and constituting the interior face of the ring, and the third face being gradually curved to intersect the two faces first specified. One or more of the sections 1 has formed upon its curved face a nib or projeotion 3, the function of which is fully explained in my previous patent, and which has no specific connection with my present improvement. The interior aperture of my packing ring is accurately proportioned to receive a piston rod, and during the use of the ring in a stuffing box, the distance between the sections of the ring will very gradually diminish as the interior face of the ring is worn down. When the opposing end. faces of the sections of the ring come into contact with each other, the ring may no longer adapt itself to wear and its utility ceases.

As shown in the drawings the sections have each an inner corner 1 rounded off. The effect of this construction is that each end face'is gradually merged with the inner cylindrical face of the section and the sharp corner which would otherwise be present at the intersection, is eliminated.

Experience has demonstrated that while a packing made in accordance with the teach- I ings of my patent to which I have hereinabove made reference, possesses marked utility and is capable of very satisfactory service, the same however possesses that disadvantageous characteristic,-inherent in the formation of the square ends of the packing sections,resulting from accumulation or depositing of small flakes or slivers of metal between the ends which, obviously, constitute barriers or obstructions preventing the closing of the ends together to the extent originally intended and thereby limiting the adjustment of the sections toward each other; and furthermore when such a condition does not arise and the sections are firmly impinged together endwise there of, there is presented some difliculty in adequately lubricating the packing or shafting working therethrough. It is to the elimination of these objectionable features that my present conception has been directed, and I have found successful results have been obtained by the structure hereinabove set forth, in the operation of which it will be seen that as the inner surface of the packing ring wears away and the ring as an entirety is compressed to bring the ends of the sections together, a portion only of such ends will directly contact, while leaving unobstructed spaces between other portions of said ends,specifically the inner corners of the ends,-into which said particles of metal or obstructing accumulations may fall and escape by being carried off axially of the packing on the piston rod, from which lat ter they may be readily wiped or otherwise removed; and such constantly maintained spaces extending as they do lengthwise of the shaft will afford open ways through which a lubricating fluid may find its way to the surface of the shaft and to the packing on the interior of the latter or Within the box in which the same is placed for ad.-

- j ustment.

Copies of this patent may be obtained for The invention is presented as'including all such modifications and changes as properly comewithin the scope of the following claims.

WVhat I claim is: V

1. A sectional metallic packing ring comprising a plurality of 'sections, Wire bonds joining said sections and holding their extremities in a'spaced relation, each section having its end faces intersecting its interior face in gradual curves.

2. A packing ringeomprising a plurality of similar sections, and means for holding said sections in a slightly spaced relation, the end faces of each section having intersection with the interior face of the same in gradual curves;

3. A packing ring comprising a plurality of similar sections held in a slightly spaced relation, the ends of the sections being so formed that the spaces between the sections are increased slightly in Width adjacent to theinterior surface of the ring.

l. A packing ring comprising a plurality of sections normally spaced apart at their ends to permit adjustment toward each other, the outer portions of said ends being formed to close together at the limit of such adjustment and the inner portions of said ends spreading to maintain a space therebetween, substantially as and for the purpose described.

HAMPTON P. RHODES.

Witnesses:

G. A. LHnmssoN, S. M. Fosrnn.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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