US1467113A

US1467113A - Packing for pistons

Info

Publication number: US1467113A
Application number: US461545A
Authority: US
Inventors: Theodore A Meyers
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-04-15
Filing date: 1921-04-15
Publication date: 1923-09-04
Anticipated expiration: 1940-09-04

Description

Sept. 4,1923; 1,467,113

'T- A.'ME`YERS f `PACKING Eon PIsToNs t0n-rod and an ordinary stuffing-box, and

Patented Sept. 4, 1923.

UNITED `STATES .THEODORE A. MEYERS, OF TOLEDO, OHIO.

PACKING FOR PISTONS.

Application lled April 15, 1921.

To all whom t may concern):

Be it known that I, THEoDoRE A. Mareas, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Chio, have invented certain new and useful Improvements in Packings for Pistons; and I do declare the following to be a full, clear, and exact descriptionn of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to new and useful improvements in packing for piston-rods, valve-stems, plungers and similar structures, and is designed to furnish a simple and eficient packing which will not only provide a joint or joints which completely prevents the escape of liuids around or through the packing, but which will accommodate itself to the irregularities of worn or scored surfaces with which it may come in contact. My packing is also designed to provide a degree of resiliency which adapts itl for a considerable range of variation in the sizes of the annular chambers in which the packing may be employed, as well as changes due to contraction and expansion.

With these and other objects and advantages in view, my invention consists of the devices, construction and arrangement of parts hereinafter described, and illustrated in the accompanying drawings, in which- Figure 1, is a central, longitudinal, sectional view of my packing applied to a pis- Fig. 2, a perspective view of a short Section of one of my packing-rings, detached.

My packing is formed preferably in elongated strips which are divided into suitable lengths to encircle, as a ring, the rod to be packed. Viewed in cross-section, my packing may be considered as consisting of two principal parts, namely. the rectangular portion a and the portion b, which is of the same width as the part a and wliichis preferabl)T arched as shown. The part may. for con,- venience. be termed the cushion. The part A a is built up of superposed layers of rubberized fabrics, the layers being closely conipressed together. The fabric may consist of any suitable fibrous material. as. for instance` cotton duck. asbestos. flax. hemp` jute or the like. woven or braided. depending Serial No. 461,545.

upon the nature of the Huids to be confined, whether water, steam, acids, gases or other iuids, as well as the degree of temperature to which the packing is to be subjected. The part b is composed of the same material, wound or fashioned in such manner as to leave a longitudinal central tubular opening o therethrough. Throughout the length of this opening is a closely fitting, iexible, heat and oil-resisting tube d. This tubing is readily obtainable upon the market, but I am unable here to explain its composition. The oice of this tube is to lend resiliency to the cushion part as well as to aid in maintaining the cross-sectional contour of the packing-rings.

The part a of the packing is divided diagonally, as at e, so that when the packingrings are under compression, the inner and the outer triangular portion f-g, will slide upon each other in wedge-like fashion, which will spread them apart in the annular space around the piston and effecting their movement in the direction of the length of the piston. Thus each member or part of the packing-ring contributes to the elastic transverse spreading of the ring, internally and externally, and to the close contact of the rings with the opposed surfaces of the piston andthe stuffing-box.

The several parts above described are wrapped and held assembled in operative relation by means of a light fabric, woven or braided, of suitable material, such as cotton yarn or asbestos, depending upon the service for which the packing is designed. The several packing-rings are disposed with the flat sides h of the triangular portions g turned in the direction of the gland or follower ofthe stuffing-box. so that, under com pression` the cushions of the successive rings will contact with the surfaces L of the adjacent rings.

The lubricants to be employed with vmy packing, such as oils, greases, mica or graphite, or mixtures of the same. are a matter of selection. and will vary under different conditions of temperature` and with the different Huids to be conned. as will be understood by those skilled in the art without explanation in this specification.

Having described my invention, what I claim and desire to secure by Letters Patent of thenited States. is`

l. An expansible packing embodying a resilient section provided with a chninbered rubber core, and parallel therewith a pair of relatively slidable sections coacting for relative shifting in effecting opposite packin".

5. An expansible packing embodying a resilient section provided with a cliambered core, a. fabric body section about said core, and relatively sliftable triangular sections movable as to the resilient section.

3. An expansible packing embodyingr a resilientsection provided with a tubular rubber core. a pair of parallel fabric body triangular sections, and a jacket for assembling said sections as a unit.