US1550322A - Packing - Google Patents

Description

Aug. 18, 1925. 1,550,322

J. OSTRANDER PACKING Filed Nov. 8, 1919,

Jizw 020 Patented Aug. 18, 1925.

; UNITED STATES PATENT OFFICE.

JAMES OSTRANDER, F INDIANAPOLIS, INDIANA, ASSIGNOR TO GRAPHIC-METAL PACKING COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION.

PACKING.

Application filed November 8, 1919. Serial No. 336,682.

To all whom it may concern.

Be it known that I, JAMES OSTRANDER, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented new and useful Improvements in Packings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification.

My invention relates toimprovements in packing, and has for its object the production of a packing that willxstand rou 'h usage and wear better thanordinary pac ing now on the market.

A further object is the roduction of a packing by the use of whic a thin film of lubricant may be formed on the shaft.

A further object is the production of a packing in which the above features are combined with the advantage of cross expansion tending to keep the packing in place against the shaft and cause it to perform its function in the most efficient manner.

A further object is the production of a packing that can be cheaply manufactured,

' and one that will remain in operative position with little liability of displacement.

0 These and such other objects as may hereinafter appear are attained by my device, an embodiment of which is illustrated in the accompanying drawings, in which Figure 1 represents a section view of my improved packing before compression;

Fig. 2 represents a top plan View of Fig. 1, with a portion of the upper layer broken away;

Fig. 3 represents a sectional view of my 40 improved packing after compression.

Like numerals of reference indicate like parts, in the several figures of the drawings. y

Referring now to the drawings,-my in- 4 vention contemplates the use of a packing formed from strips of canvas, duck, or some fabric or fibre 4, having interposed between the layers a composition 5 of some rubber or rubberlike substance mixed with some metallic, mineral, or mineral-like material.

T metals,

The fabric is ordinarily supplied in wide strips and the composition 5 spread between to the desired degree of thickness, and the structure built up to the required thickness, as indicated in Fig. 1.

The material is then cut into strips of varying widths, depending upon the character of the packing required, and the strips so out are placed in a press and compressed, causing the layers to assume a wrinkled or corrugated shape, as shown in Fig. 3 at 6. This construction brings in the principle of cross-expansion, as the packing being con fined on the outside and inside is always tending to expand and hugs more closely the shaft about which it is placed.

In practice with the ordinary rubber mixture, I use a grapho-metal composed in the main of soft metal in loculate condition with graphite embedded in its pores as dcscribed in United States Patent No. 926,676 issued to Septimus P. Morison. By the use of this composition I get excellent results; and the shaft, after a short use, is coated with a thin film of graphite, which acts as a lubricant and eliminates skin friction.

A packing made in the above described manner wears much longer than other packing on the market, and the presence of the metal or mineral-like material greatly increases the efliciency of the product.

I can, if I desire, use lead without gra hite, or graphite without lead, and I also nd that the use of other comparatively soft either alone or in combination with 6 graphite, will also increase the value of the product, whether the layers are compressed or corrugated, or not.

The value of packing of this character ,depends greatly on its ability to maintain its shape and serve in addition to the packing, 'as a lubricant, and this result is attained with a high degree of efliciency in my product.

I claim as new and desire to secure by Letters Patent of the United States 1. A packing formed from a multiplicity of layers of fabric, with a layer composed of a mixture of rubber and metal interposed between said layers, said metal being in locuiate condition with graphite embedded of fabric and a rubber-iike composition coliin its pores. taining lead in loculate condition with 2. A packing formed from alternate 1ay= graphite embedded in its pores. 10 ers of fabric and a rubber-like composition In witness whereof, I have hereunto sub- 5 includin a lubricant, said fabric being scribed my name.

Wrinkle by the application of pressure.

3. A packing composed of alternate layers JAMES OSTRAN'DER.

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