US92131A - Improvement in lubricators - Google Patents

Description

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Letters Patent No. 92,131, dated Jane 29, 1869.

IMPROVEMENT 1N LUBRIcATons.

` The Schedule referred to-in these Letters Patent and making part of the raam` To whom. it may concern of two forms of my improved lubricator; and

Figure 3 is a like section of the lubricator, and a mould for casting the guard of soft metal which unites the different parts of which th'e iubricator is composed.

My invention relates Vto that class of inbricators consisting of a bulb, iu which the lubricant is held, and a stem, through which the lubricant is fed alltom-.ttically to the shaftiug or other mechanism; and

It consists ,of a lubricator, in which the bulb and the tube for holding :the tubular feed-stem are united by means of a fusible or soft metal, or-alloy, cast around the bulb-neck, which has formed upon it corrngations or projections, constituting a holding-surface for the metal, or both around the neck and within the bulb, so that they shall be upon the inside as well as the outside ofthe bulb.

A represents the glass bulb of the lubicator;

B is the tubular feed-stem;

a is the tube in which the stem is held; and

b is the guard of soft metal for holding the tube to the bulb.

The method of casting or running the soft-metal guard around the neck of the bulb and within the bulb, is illustrated in fig. 2, where C is the matrix, and D. the core for holding the tube in place during the operation.

The core, in 'this instance, is hollow, in order to allow the escape of the air displaced by the entrance of thc metal which forms the button b', within the bulb. v

I needv not, however, further describe the manner of ibrmiug the button, as it has been fully set forth and claimed in my application for a lubricator, which has recentlyY been allowed.

It will be lseen that the present guard surrounds, both on the'outside and inside, the neck or lower end of the bulb, to which the tube a is thus firmly held.

Instead, however, of ruiming the metal both around the bulb-neck and inside the bulb, the tube a can be held in place by simply casting the guard around or' upon the exterior ofthe neck, as shown in fig. 3. In such case-the orifice in the bulb need be only large enough to receive the end of the tube a, while the neck should have formed, upon its exterior, corrugations'or anges, or any equivalent means, constituting a holding-surface for the metal guard upon the exterior ofthe neck.

The mould for casting the metal around the neck is similar to that shown in iig. 2; and the thimble or tube a is held upon a core, as'illustrated in the same figure. But in this case, as the metal does not enter the interior ofthe bulb, the core may be solid instead of tubular.

The metal, when cast around the neck ofthe bulb, enters the corrugations c, or surrounds the flanges, teeth, or equivalent holding-devices formed upon the exterior ofthe neck, and thus holds the tube a firmly in position.

The tube ,'as shown in the drawings, has an internal screw-thread, with which thescrew-threa'ded upper end of the stem B engages. Instead, however, of employing this means for uniting the two, the stem may be forced into the tube, and held byfriction.

Between the shoulder of the stem and the tube, there may be interposed a washer or packing, (l, of suitable material, so as to insure that perfect tightness of, the joint which is so essential to the perfect operation of the lubricator.

vIn conclusion, I'would observe -that I do not claim forming the metal holding-button b within the bulb, as shown in figs. 1 and 2, as that feature has been described and claimed by me in the application above referred to; but

What I claim, and desire to secure by Letters Patent of the United States, is-

An automatic lubricator, in which the bulb and the tube for holding the feed-stein are united, by means of a guard of fusible or soft metal, or alloy, cast around the neck of the bulb, provided, upon its exterior, with corrugatious or equivalent means, forming a holding-surface for the metal, or both' around and within the bulb, substantially as'and for the purposes sot forth.

In vtestimony whereof', I have signed my nameti this specification, before two subscribing witnesses G. IVATERS.

Witnesses EDM. F. BROWN, M. BAILEY.

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