US430313A - Packing for stuffing-boxes - Google Patents

Description

(No Model.)

0. H. ENSIGN &. P. B. WRIGHT. PACKING FDR STUFPING BOXES.

No. 430,313. Patented June 17, 1890@ UNITED STATES PATENT OFFICE.

CHARLES H. ENSIGN, OF TEHESCAL, AND PHIN B. lVRIGHT, OF BERKELEY, CALIFORNIA.

PACKING FOR STU FFlNG-BOXES.

SPECIFICATION forming part of Letters Patent No. 430,313, dated June 17, 1890.

Application filed December 18, 1889. Serial No. 334,191. (No model.)

To all whom it may concern: D of metal, which serves to lightly hold the Be it known that we, CHARLES H. ENSIGN, parts together upon the rod. Around all residing at Temescal, and PHIN B. WRIGHT, these parts is the ring of compressible materesiding at Berkeley, both in Alameda county, rialsnch as rubber Ewhich lies within the 5 5 State of California, citizens of the United stuffi11g-boxF,being confined and compressed States, have invented an Improvement in between the flanges a of the rin -sections Packing for Stuffing-Boxes; and we hereby and the gland fof the box. declare the following to be a full, clear, and G is a severed contractible band of metal, exact description of the same. which encircles the outer rounded end of the 10' Our invention relates to that class of packring sections and lies under the rubber.

ing for stuffing-boxes in which sectional me- This band has its edges, as shown at g, rivtallic rings fitted to the rod are held in place eted or pivoted together at one end, leaving by an encircling body of compressible matethe other end free to contract and expand. rial. Now it will be seen that by reason of the r 5 Our invention consists in the novel conoutwardly flaring or beveled edges of the struction of the sectional ring and its arring-sections their interior may Wear, and the rangement and combination with surroundexterior rubber band may continuously coming parts, hereinafter fully described, and press them upon the. rod without having said specifically pointed out in the claims. edges come any closer together. Therefore 20 The object of our invention is to provide the packing constantly adjusts itself under a simple and effective packing of this class wear and fits the rod properly at all times. which will maintain its perfect adjustment The object of having three sections is to pro during use and consequent wear. vide for taking up the wear all around, and

Referring to the accompanying drawings thus preserve the perfect circular character 2 for a more complete explanation of our inof the interior of the ring.

vention, Figure 1 is a central cross-section of The keys 0, while permitting the contracour packing, a portion only of the rubber tion of the ring, are for the purpose of breakring E being shown, and one of the keys 0 ing their joints and making the necessary being shown removed, Fig. 2 is a vertical steam-tight joint of the packing. o longitudinal section of our packing, the lower The band D, in addition to holding the half of the metallic packing-ring and the parts together, has for its main purpose the band D being in elevation. Fig. 3 is a perkeeping of the rubberE out of the joints, and spective view showing two of the sections A the band G has a similar purpose of keeping and one of the keys C. Fig. 4 is a view of the rubber out of the joints at the end of the 5 band D. Fig. 5 is a view of band G. ring, and also preventing it from binding too The metallic ring is made in sections A, closely on the rod. preferably three in number, of about equal Having thus described our invention, What size. These sections are concavo-convex, enwe claim as new, and desire to secure by Letabling them to fit about the rod B. Each ters Patent, is o 40 section has a flange a on one end, and the ad- 1. An improved stuffing-box consisting of jacent edges of the sections, aswell as the the main sections having recessed adjacent adjacent ends of the flange, are so beveled edges, and having one end flanged and the with respect to each other as to flare outother rounded, independent key-pieces fitted wardly from the inner or concave surface to upon the rod between the recesses in the 5 45 the outer or convex surface. In each side of main sections, a severed contractible band each section are made corresponding recesses encircling the sections and keys, a compressior keyways a, and into these and bridging ble ring exterior of the band and confined the space between the sections are let freely between the end flanges of the main sections the keys 0, consisting of small curved pieces, and the gland of the stufling-box, and a sec- 50 which lie upon rod B. Encircling the second severed contraotible band within the tions and keys is a severed contractible band compressible ring and encircling the rounded ends of the main sections, substantially as thereby leaving the other edges free 'to condescribed. tract and expand, substantially as described. 2. An improved stuffing-box consisting of In witness whereof we have hereunto set the main sections, the key-sections fitted beour hands. 5 tween them and the encircling contractible ring, in combination with a severed ring within the compressible ring between the inner ends of the main sections and the gland WVitnesses:

of the stufling-box, said inner ring having its DU RAY SMITH,

so severed edges at one side riveted together, JOHN MARTENS.

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