US287751A - Metallic wiee packing - Google Patents

Description

(No Model.)

S. ARMSTRONG.

META LL10 WIRE PACKING.

N0.28'7.'751. Patented mam-1883.

UNITEn- STATES "PATENT OFFICE.

' SAMUEL ARMSTRONG, on NEWARK, NEW JEnsnY.- V

METALLIC WIRIE PACKING.

:PEGIFI GATION fOrmi ng part of Letters Patent No. 28 7,751 dated October so, 1883.

Application tiled March 2t), 1883. -(No model.)

' To all whom, it may concern:

Be it known that I, SAMUEL ARMSTRONG,- a citizen of the United States, residing in the city of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Metallic Wire Packings, fully described and represented in the following-specification and the accompanying drawings, forming a part of the same.

This invention consists in the combination, with a series of parallel wires, of alayer of elastic material for pressing the same toward the Wearingsurface, againstwhich the packing maybe applied. i

It also consists in means for combining the two named elements practically, and in the new element to the combinations of wires heretoarticles resulting from such combinations.

The nature of the invention will be under I stood from the annexed drawings, in which Figure 1 shows a stuffingbox in section, with the packing applied to a piston-rod. Fig. shows a side view of the packing asmanufactured in continuous bars, one end of the bar be-- ing shown in section; and Fig. 3 shows a section of a packing-bar of alternative construc tion.

In the packings heretofore made of parallel wires, as claimed in patent issued to me August 16, 1881, the nonelasticquality of the metallic rods or wires ofiered many advantages over other constructions, but possessed the disadvantage of not yielding freely or voluntarily to irregularities of form or movement in the surface to which it was applied; and my present invention is intended to supply an additional fore known, whereby the latter may act as if themselves elastic to a considerable extent. The inelastic but yielding and compressible wires are thus adapted for many uses or situations where such voluntary movement is re quired, and are enabled to accommodate themselves automatically to the irregularities caused by rough or crooked piston-rods. I I accomplish this desirable object by combining with the parallel wires a layer or strand of suitable elastic material arranged to press the;

metallic rods toward the wearing-surface when in use. Such elastic action may be'sobtained from hemp, jute, india-rubber, and other materials having the desired elasticity, the degree of which is not material to my invention,

v as the amount of elasticity required in the packing depends entirely upon the degree of irregularity in the wearing-surface to which the packing is applied. Such layer of elastic material may be combined or secured with the parallelwires in any desired manner, as by binding the same with. a few fine threads or wires adapted to speedily wear off 7 when the packing is put in use; or the two substances may be inclosed in a fabric or wrapping entirely covering both materials, andsser ving as the vehicle, if desired, of alubricantfor the wearing-surface. In the drawings such an inclosing fabric is shown, and maybe produced by braiding, winding, or wrapping in any economical manner, the former method being the most convenient and efiicient in practice, as the braidedcovering does nottend to unwrap or displace itself when out.

A is a piston-rod, B a stufling-box, G the follower to press the packing therein, and D,

.D two coils of packing inclosed therein.

In practice, three, four, or any desired number of coils may be inserted in the stuffing- .boX, the continuous bar shown in Fig. 2being 'bent about the rod A, with the wires ctoward the rod, and cut to form the coils or rings indicated at D in the sectional view in Fig. 1.

The parallel seriesof wires are shown at e,

the elastic layer associated or combined with them is shown at f, and the fibrous braided covering is shown at g. In Figs. 1 and 2 the series of wires is shown in direct contact with the elastic material indicated at f; but in Fig. 4

3 the two elements are separated by a layer or partition of sheet metal, h, preferably of avery yielding substance, as lead or'zinc.

Such par-' tition prevents the wires under the pressure of the follower C from crushing into the yielding substance of the layer f, and thus secures a 311101'6 efficient and continuous application of the wires to the wearing-surface to which they are applied, as the rod A. v To combine a lubricant with the inclosing covering 9, the substanceof the latter may be soaked in paraffine, tallow, &c., before or after application to the inclosed elements, and black-lead may be combined with the samein any desired manner. 1

The metallic wires may be made of any suitable material, and theparallel layer of elastic material may, if made of fibrous material, be

ICO

braided, twisted, or otherwise formed into strands before combining with the wires in the manner described. Such bending of elastic fibers is highly conducive to the development of elasticity, and is therefore appropriate in the elastic material employed, while it is absolutely diselaimed in relation to the metallic wires, as their entire function depends upon free parallelism in the packing, as fully set forth in my former patent referred to above.

Having fully shown my invention in the accompanying drawings, it is obvious that it does not consist in an annular covering of elastic material, as the same was claimed by me in the prior patent referred to above.

I therefore claim my present invention as follows:

1. The combination, in apacking, of a series of parallel wires and a layer of elastic material, the whole arranged and operated as and for the purpose setforth.

2. The combination, in a packing, of a series of parallel wires, a layer of elastic material, and an iuclosing fabric wrapped, woven, or wound about the same, substantially as and for the purpose set forth.

3. The combination, in a packing, of an inclosing fabric and a core, consisting in a series of parallel wires separated from a layer of fibrous or other elastic material by a strip of sheet metal, substantially as and for the purpose set forth.

4. As a new article of manufacture, apacking having in its core aseries of parallel wires, arranged at one side thereof to form the wearing substance thereof, and a layer of elastic material arranged at the opposite side thereof to press the wires toward the wearing-surface, substantially as and for the purposes set forth.

5. As a new article of manufacture, a packing formed in bars, and consisting of a core having a series of parallel wires at one side thereof, a layer of elastic material at the opposite side thereof, and a binding material holding the wires and elastic material in the proper required relation, as and for the purpose set forth.

6. The combination, with a packing containing metallic packing-wires, operating as described, of a fibrous covering carrying a lubricant, as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

SAMUEL ARMSTRONG.

Vitnesses:

Tnos. S. CRANE, JOHN A. RODRIGO.

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