US434808A - Rod-packing - Google Patents

Description

.(No Model.)

W. H; HMOND. ROD KING.

Patented Aug. 19,18919.

INVENTOH By uuMM/w A TTOHN E YS W/TNESW %%w UNITED STATES PATENT OFFICE.

WESLEY H. RICHMOND, OF CADILLAC, MICHIGAN.

ROD-PACKING.

SPECIFICATION forming part of Letters Patent No. 434,808, dated August 19, 1890.

Application filed February 5, 1890. Serial No. 339,311. (No model.)

.To all whom it may concern.-

Be it known that I, WESLEY H. RICHMOND, of Cadillac, in the county of Wexford and State of Michigan, have invented a new and Improved Packing, of which the following is a full, clear, and exact description.

My invention is an improvement in that class of metallic rod-packing in which a beveled split ring surrounds the sectional packing-rings proper and serves to press them inward, and thus hold them in close contact with the piston-rod.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement as applied. Fig. 2 is aplan view of the improvement. Fig. 3 is aplan view of the casing forthe packin g-rin g andthe wedges. Fig. 4 is a perspective view of the circularlyarranged wedges, and Fig. 5 is a perspective view of a section of one'of the packing-rings.

The improved packing, as shown in Fig. 1, is applied to a piston-rod A, which passes in the usual manner through the cylindenhead B and the cylindrical offset C, into the outer end of which fits the usual gland D. The piston-rod A is surrounded in the offset C. by a series of sectional packing-rings E, E, and E placed one on top of the other, and of .whichthe innermost E rests on the bottom F of a cylindrical casing F, fitting into the cylindrical offset C, and provided in its -bottom F with a central openingF for the passage of the piston-rod A. The sectional packing-rings E, E, and E are surrounded by a split ring G, which serves to press the rings E, E, and E into contact with the piston-rod A. The periphery of the split ring G is beveled to make the latter wedge shape, the pointed part extending inward, as plainly shown in Fig. 1. The wedge-shaped split ring G is "engaged on its periphery by a series of similarly-shaped wedges H, projecting in a circle from a ring I-I', having a central opening H for the passage of the piston-rod A. The wedges are adapted to pass through segmental slots F formed in the bottom F of the casing F, the ring H, carrying the said wedges, being below the said bottom F. A

ring I surrounds the inner ends of the wedges H and fits with the casing F into a slightlyenlarged recess in the ofiset C, as plainly shown in Fig. 1. A coiled spring J loosely surrounds the piston-rod A and sits in the bottom of the circular oifset C to press with its upper outer end against the under side of the ring H, carrying the wedges I-I, so that the latter are pressed in contact with the split ring G, whereby the sectional packing-rings are pressed in firm contact with the piston A, thus packing the latter. The uppermost ring E is also provided with an annular recess, into which fits a split ring E serving to break the joints of ring E and slightly extending above the ring E. On the top of the split ring E the split ring G, and the casing F rests aring K, having a curved top engaged by the similarly-shaped inner end of the gland D. The several packing-rings E, E, and E are each preferably made in three sections, and the sections of one ring may break joint with the adjacent one. It will be seen that as the easing F, with the ring K, holds the packing rings E, E, and E and the split ring G in place the spring-pressed wedges I-I exert a constant pressure on the split ring G and the latter on the packing-rings E, E, and E so that the latter are forced onto the piston-rod and pack the same. The wear on the pistonrod, as well as on the packing-rings E, E, and E is constantly compensated by the action of the spring J pressing thc wedges H correspondingly outward.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A packing comprising one or more seetional packing-rings, a beveled split ring surrounding the said packing-rings, a casing containing the said packing-rings and split ring, a series of spring-pressed wedges passing into the said casing and onto the said split ring, a ring carrying the said wedges, and a spring pressing onto the said ring to force the wedges into contact with the split ring, substantially as shown and described.

2. A packing comprising one or more sectional packing-rin gs, a beveled split ring surrounding the said packing-rings, a casing containing the said packing-rings and split ring,

IOG

sectional rings, substantially as shown and described.

WESLEY H. RICHMOND.

Witnesses:

CLYDE C. CHITTENDEN, HENRY W. SILL.

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