US753494A - No model - Google Patents

Description

in, 15mg. PATENTED MAR. 1, 1904. E. JAMES. METALLIC BACKING.

APPLICATION FILED mm: 8,1903.

30 MODEL. 2 sums-$212121 1 LWITNESS INVENTOR PATENTED MAR. 1, 1504.

B. JAMES.

METALLIC PACKING.

APPLICATION FILED mm: 3,1902

2 SHEETSSHEET 2.

ND MODEL.

[NI/EN TOR W1 TNESSES:

(FM 31 QM fi Afz'omey Q [/7 JV. @Mw

UNITED: Snares Artur Fries TO lYILLIAM GORDON, COUNTY, PENNSYLVANIA.-

OF EDGEWOOD BOROUGH, ALLEGHENY METALLEC Panama;

SPECIFICATION forming part of Letters Patent No. (53,494, dated March I, 1904. I

' Application filed June 8, 1903. Serial N0. 160,504. [No model.)

To all whom it may concern;

- Be it known that I, EDWARD JAMES, a citi- I'zen of the United States, residing at Pittsliurg, in, the county of Allegheny and State of Eennsylvania, have invented or discovered new and useful Improvements in Metallic Hacking, of which the following is a specification.

In the accompanying drawings, which make it'gg partof this specification, Figure I 18 a- Vie-W {showing at the left=hand side an end elevation and at the'right-hand side a side elevation illustrating one form of metal strip which I use; Fig. II, a section of a packing-ring made in accordance with my invention, the section being taken transversely of the axis of the ring and on a plane immediately under the metal coating; Fig. III, a section of the ring, taken so as to include the axis thereof; Fig. 2 IV, aside elevation of a second form of metal strip which I may use; Fig. V, a similar viewof a third form of metal strip; and Fig. VI, a plan VIEW of a strip like that shown in Fig.

TV, but coiled. I My'invention' relates to metallic packing,

and has for its objects the following: first, to I put upon'the-market a packing which can be roughly handled without breaking or disintegrating; second, to furnish a-packing which 3 will retain the lubricant incorporated therewith for a much lon'ger time than the metallic packing known to the trade; third, to provide a packing that has a high degree of elasticity, and, fourth, to do away with the use of Washers or bull-rings.

My packing is made up of graphite-and n1e tallicv strips of peculiar construction, though capable of some modification. The metal is made up of strips of any'approved kind of 4 antifriction metal bent so as to have one or more grooves and outwardly curved or bent sides.

' Referring to Figs. I, II, and Ill, the strips are represented by the numeral 1 and are as I make them quite thin and from threei'ourths of an inch to an inch long, though they-may be made longer or shorter, it desired. They are bent somewhat V-sliapcd,

' strips 1, united by their ends 5.

forming the angle 2, whereby a central longitudinal groove 3 is formed, though'a plural- 5 ity of grooves may be formed as well. The sides a of the strips are curled or rec'urved transversely, andthe ends 5 are also preferably curled. The sides and ends are curled so, as to be convex on the inner sides of the V- shaped strips. i

To make my packing, 1 first wet the strips and then mix them with some lubricant, as graphite, so that the metal becomes thoroughly coated with the same. I then put a quantity of the mixture into a ring-shaped die and press it into av ring form, as indicated by 6 in Fig. II. I then take the pressed ring out of the mold. dip it into melted antifriction metal, which when coolforms a strong casing or 5 coating 7, which will retain the packing intact in spite of the rough handling to which .it will be subject in shipping. The coating? may be put on' by electroplating and may consist of copper or other metal, as Babbittmetal. 7 O

The graphite (indicated by dotted surfaces 8) is caught in the grooves in the strips and also in the pockets made by the curling sides and ends of the strips as. they are closed by the pressing operation. The imprisoned 7 5 graphite in the grooves and pockets does not waste away or escape rapidly, because it can reach the rod in the stutfing-box only when the metal wears through into the grooves or pockets containing it. The graphite in the 30 pockets and grooves cannot flow around the strips so as to reach the rod, as when pellets or small fragments of metal are used.

The metal strips 1 shown in Figs. IV and VI area series of the strips shown in Fig. I, 5 united by the edges of the sides 4;, so as to fornr grooves 3 on the side of the strip opposite the grooves 3. The strip 1* can be applied in any manner to the shaping-die; but

I prefer to form it into a coil, as shown in 9 Fig. -VI. Enough coils will be used to form the ring, the graphite being applied the same I when the strips 1 are used.

The strip 1 shown on Fig. V is a series of The-process of making the rings from these strips is the same as when the strips 1 are used. These strips need not have the angles or grooves 35 shown, if preferred, though they will under pressure form a larger number of graphiteholding pockets.

My packing can be applied like soft packmgs, since it will under-the pressure of a gland flow, so as to fill'the stufiing-box no matter Whatits shape may be. It can be broken apart and the fragments reunited about a pistonrod, the pressure of the gland making it again in a solid ring. saves the expense of washers at the ends of the stufiing 'box. I

WVhere the rings iyill notbe subject to breakage the metal coatirig may be omitted, though it will be found more .agreeable to handle if it be used in all cases.

Preferably I saw or cut a kerf 9 diagonally through one side of the ring after the coating is put 'on. The ring can be spread at the kerf, so as to permit the ring to pass around a piston-rod, the ring being then closed tightly on the same. When the long strips are used, the ring will not'break when applied to a rod, as

just stated, and the ring has much more clas-.

ticity. The kerf being diagonal allows the seams claim is- 1 A packing composed of a lubricant and one or more sheets of an'ti't'ric tion'metal V- shaped in cross-section, so that when pressed together the metal forms lubricantq-etaining pockets or grooves.

2. A packing composed of a lubricant and. one or more sheets of antifriction metal. having day of May, 1903.

' EDWARD JAMES; Witnesses:

F. N. BARBER, M. A. BUSHMANP

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