US522459A - Packing - Google Patents

Description

W. J. ELLIS.

PACKING- y Patented July 3, 1894.

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UNITED STATES* PATENT OFFICE.

WILLIAM J. ELLIS, or PHILADELPHIA, PENNSYLVANIA.

` g PACKING.

. SPECIFICATION forming part of Letters Patent No.75227,459, dated July 3, 1894.

Application ined Aprii 23,1594.

To aZZ whom 12v' may concern:

Be it known that I, WILLIAM J. ELLIS, a

v.citizen of the United States, and a resident of the city ot' Philadelphia, county of Philadelphia, and State of Pennsylvania, have inventeda certain new and Auseful Improvement 'in Packing, of which the following is a specilication. A

My invention relates to animproved packing for use in glands or packing boxes of pistons, and in other similar situations.' p The invention consists in the matters hereinafter set forth and pointed out in the appended claims. Y

In the drawings :f-Figure 1is an end view of my improved packing." Fig. 2-5 is alongitudinal section of a'portion lof the packing. Fig. 3- is a longitudinal section of the same" taken at right angles to that shown inFig. 2;

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and Fig. 4--is a cross section of the improved packing. y v

Similar numerals of reference indicate simi-Y lar parts in all of the figures.

Referring to the drawings, l designates the outer covering of the packing, formedof lead and having the cylindrical shapey shown'in Fig. 4. Located on opposite sides of "ithis outer covering, as clearly shown in Fig. 2, are openings 2, formed therein for the purpose of the easy removal of the packing, after it has been placed in the cylinder .and has been mashed, &c.,by the action of the piston. By inserting a hook of any description into one of these holes, the packing can be removed without the necessity of chipping itout.

3 indicates a core, formed of rubber vor as bestus, as desired, around which is wound, in

spiral form, a strip of lead wire, 4, as indi# cated in Figs. 2,3, and 4. This lead wire may be formed entirely of lead, or it may be formed i of an admixture of lead, combined with some alloy, such as tin, ora substitute, so'that the tensile strength of this lead wire will be increased, andthe liability to heat fromV fric.- tion, &c., be lessened. After this spiral has' been wound, the same is dipped in a solution of rubber cement,por rubber solution, after which the same is coated with plumbago or graphite.y This combination fills the interstices formed between the leadkwire and the outer covering, as shown at 5, and forms a perfectly Smooth surface between the two seria 110.503.635. (No man.)

parts', thereby making the packing of greater effectiveness, and facilitates the process of manufacture.

With this construction it will be seen, that an effective packing is produced, which can be compressed, if desired, by the action of the piston or by hand, and which will also be of a durable construction. It is also capable of being removed easily from the cylinder, where it is placed, without the necessity of taking the cylinder apart and cutting it out with a chisel, which is the ordinary form of operation. A, Y

jI do not show a modification of this device, butit is to be understood, that the same can besections, yviz:--by cutting the packing in severalksections, als ,for instance on the lines .1 -2 and 3-4 of Fig. l, or in smaller sections, and several, if not all, of these sections used in the packing to be placed around the piston rod. f

Having thus described my invention, what I clairnhas new is 2 .l.- A packing for use in glands or Vpacking boxes of pistons, comprising in its construction, an outer covering of lead pipe, having openings4 on opposite sides, for the insertion of ahook or other device to remove the same from the cylinder; a core composed of an elastic material; a spiral of non-elastic material wound in spiraly form, around said core, the core and spiral being adapted to be inserted in said lead pipe, substantially as described.

2. A packing for use in glands or packing "boxes of pistons, comprising in its construction, an outer covering of lead pipe, having openings on opposite sides, for the insertion of a hook or other device to remove the same from the cylinder; a core composed of an elastic material; and a spiral, composed of a nonelastic material, covered by a rubber cement and also covered by'plumbago for graphite, wound around said elasticcore, the saidcore and spiral being 'adaptedVV to be inserted" in 1 said lead pipe, substantially as described.

3. A packing for use in glands or packing boxes of pistons, comprising in its construction, an outer covering of lead pipe, having openings on opposite sides; a core composed of rubber; and aspiral composed of lead wire wound around said core, said spiral being dipped in a rubber cement and being covered IOO by plumbago or graphite, the said core and spiral being adapted to be inserted in said lead pipe, substantially as described.

4. A packing for use in glands or packing boxes of pistons, comprising in its construction, an outer covering of lead pipe, having openings on opposite sides; acore composed of yielding material; and a spiral composed of lead wire Wound around said core, said spiral being dipped in a rubber cement and being covered by plumbago or graphite, the said core and spiral being adapted to be inserted in said lead pipe, substantially as described.

5. A packing for use in glands or packing boxes of pistons, comprising in its construc-

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