US336152A - St paetington - Google Patents

Description

(No Model.)

J. PARTINGTON.

PACKING FOR RODS.-

No. 336,152. Patented Feb. 16. 1886.

-UNITED STATES ATENT OFFICE.

JOHA PARTINGTON, OF WINNIPEG, MANITOBA, CANADA.

PACKING FOR RODS.

BPECIPICATION forming part of Letters Patent No. 336,152, dated February 16. 1886.

Application filed December 7, 185 5.

To all whom it may concern.-

Be it known that I, J OHN PARTINGTON, of the city of YVinnipeg, in the county ofSelkirk, Province of Manitoba, Canada, engineer, have invented new and useful Improvements in- Packings for Rods; and I do hereby declare that the following is a full, clear, and exact description of the same.

This invention has referenceto the construction of a metallic packing to be used in the place of other packing heretoforein use to keep the orifice tight through which piston-rods, valve-rods,pump-rods,and otherrods working in and out of spaces filled with steam, water, gases, and other vapors or fluids.

The particular features which form the present invention will behereinafter fully set forth, described, and claimed.

For the sake of cl earness,and to avoid a multiplicity of words, I shall confine my description of construction and application of my invention to the steam-cylinder and piston-rod of a steam-engine, from which aperson skilled in machinery may at once understand how my invention may be applied to other rods, as above mentioned.

In the drawings hereunto annexed, similar letters of reference indicate like parts, and Figure 1 is a central vertical section on line at, Fig. 3, of a construction embodying myinvention. Fig. 2 is an elevation of the construction shown in Fig. 1. Fig. 3 is a plan of the parts shown in Fig. 2. Fig. 4 is a detached view of the pistonrod, packing'rings, and springs. Fig. 5 is a detached view of the piston-rod and a modification of the construc tion of the packing-ring with a spring. Fig. 6 is a detached view of the piston-rod and plan of spring-plate Fig. 7 is a side elevation of the spring-plate. Fig. 8 is a plan of a bush and springs. Fig. 9 is a part side elevation and part section of the bush shown in Fig. 8. Fig. 10 is a section on line 0:, Fig. 8.

Letter A represents an ordinary pistonrod. B is a part of a cylinder end; 0, the neck through which the piston-rod works in and out of the cylinder, as in the ordinary way.

Instead of providing the neck 0 with the ordinary recess to rececive hemp or other packing, in the present invention I provide the neck G with a recess, D, to receive a bush, E, closely fitting and filling the recess, as shown in Serial No. 184,962. (X0 model.)

Fig. 1. The bush E is provided with a flange, F, the object of which will be hereinafter de scribed. are turned true. The bush is also provided with three or any other greater number of recesses, H, each of which is provided with a spiral spring, I.

K is a follower or spring-platcto receivethe pressure of the springs I, to keep the rings S pressed tightly together and pressed down upon the hereinafter mentioned surface R. The plate K is provided with projections L, agreeing with the recesses H and entering into them, as shown at the lower part of Fig. 8, (see also Fig. 10,) by which it will be easy to understand that the spaces left in the recesses II will be suit-able for the springs I to work quite freely in.

It will be remarked that in Fig. 1 the projection L, that should be shown in that figure, is omitted. This is done to show clearly the spring I,which spring is necessary,whereas if the parts are well and properly fitted and so kept,the projections L are not absolutely nec essary, although I prefer to use them.

M is a gland attached to the cylinder-neck O by bolts and nuts N in an ordinary manner. This is provided with a recess, 0, and projection 1?, arranged to engagewith the projection F, as shown in Fig. 1, so that by turning the surfaces of the projection P true and parallel with the surface R, and turning out true the recess 0 and opening in the gland M above the surface R, and by carefully fitting by scraping. grinding, &c., the surfaces of the projection P which come in contact with a part of the surfaces of the bush E, and by tightening the two said parts together with the bolts and nuts N, the projection I not only forms a steam-tight joint with the bush, but it also causes the inner surfaces of the gland M to be held parallel and concentric with the inner surfaces of the bush E. In the recess 0 is situated the plate K, and two (or more, if de sired) metal packing-rings, S, each of which is made in two parts, tongued, as shown at T, Fig. 4. These are fitted exactly to the rod A. The tongues of the one ring are set to be covered by the solid part of the other ring. They are also provided with a small amount of clearance,as shown,so that by external springs, V, the inner periphery of each ring is kept pressed The whole of the surfaces of the hush with all the force of the springs upon the rod A.

In Fig. 5 another modification ofjointing or tonguing the parts ofthe parts rings S is shown. I here wish to state that I do not confine my invention to any particular manner of tongueing or jointing the two halves of the ring S together, as many forms for such purposes are well known, and would at once suggest themselves to an engineer of ordinary skill.

With regard to the material out of which the rings S may be formed, although I do not confine myself to any particular metal, yet I have found soft metal and brass-the same as used in engine-bearings-to answer very well. The ring K, I preferably, but not necessarily, form of brass. It will be observed (see Fig. 1) that all the parts through which the rod A passes,with the exception of the rings S, are bored out to such size that they will be well clear from touching the rod A,thus forming the spaces A A. These spaces are an important feature of the invention, because should the cylinder or the guides to the end of the rod A be untrue or have any lost motion or l in the said guides, which they must have to enable the parts to work with ease, or should the rod A be subject to any slight vibrations lateral to the rod A from any cause whatever, by making the recess 0 somewhat larger than what is required for the packingrings S and springs V, as shown in Fig. 1, and by providing the spaces A and A, the said rings are enable to slide about freely in the said recess 0, and thus prevent any extraordinary strain upon thefrings by the rod.

Another important feature in the invention is that of placing the springs V wholly upon the rings Sthat is to say,so that the springs V will move about with therings, therefore their action under all circumstances will remain the same,whereas by the use of springs which are not arranged to move about with the rings. their action will be very materially interfered with by any vibrations or lateral movements of the rod A. The upper surface of the plate K, flat surfaces of the rings S, and surface R are all fitted up true,parallel,and steam-tight, as by scraping, grinding, 850. The springsV have their ends engaged with recesses formed in the rings,to prevent them from losing their proper relative position with therings.

. What I claim, and wish to secure by Letters Patent, is as follows: i

The combination of the end and neck B 0, bush E, having recesses H and springs I, follower K, constructed andarranged with the rod A to form the space A rings S, having springs V attached thereon, as described, gland M, having recess 0 and surface R, and space A between it and the rod A, the whole substantially as and for the purposes set forth.

JOHN 2AR'IINGTON,

Images