US605315A - Leonard g - Google Patents

Description

(No Model.) l

L. G. KIRK.

AUTOMATIC AIR VALVE FOR STEAM RADIATORS. No. 605,315.l Patented June 7,1898.

/N VEN TUI? NrTnD` STATES PATENT u OFFICE.

LEONARD G. KIRK, oF NEW YORK, Nj Y.

AUTOMATIC Al R-VALVE FO R STEAM -RADIATO RS.

SPECIFICATIQN formingpart of Lettesratent No. 605,315, dated June 7, 1898. Application led January 15, 1868. Serial No. 666,782; (No model.)

T0 all whom, it may concern.:

Be it known that I, LEONARD G. KIRK, a citizen of the United States, residing at New York, (borough of M anhattam) in the State of NewYork, have invented certain new and useful Improvements in Automatic AirfValves4 for Stea1n-Radiators, of which the following is a specification.

This invention relates to an air-valve for steam-radiators; and the object of the invention is to improve the action of the valve in such a manner as that it will automatically close the air-outlet as soon as the air has escaped, so that water will not squirt out, as heretofore, in devices of this class. i

The invention consists .ofabase-piece, a casing mounted on the .base-piece and provided with an air-outlet at its upper end, and a float arranged in the casing above a deflector near the top of the `base-piece to obstruct the `direct striking of air and steam which pass through the inlet-passage of the said base-piece against said float, said lioat being provided with a needle-valve for closing the air-outlet of the casing automatically, when the Water from the radiator passes in through the base-.piece and acts on said float, as will be hereinafter described and then particularly'claimed.

In the accompanying drawings, Figure l is a side elevation of a steam-radiator with my improved air-valve attached. Fig. 2 is an enlarged vertical central section, partly in elevation, of the air-valve. verse section on line 3 3 of Fig. 2, and Fig. 4 is a cross-section on line 1t 4 ot' Fig. 2.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A indicates the radiator, of any approved form, to which my improved automatic air-valve is attached, as usual.

My device comprises a base-piece orvshoe.

of said base-piece belowan internallyscrew-` threaded iange b2 thereon.

Fig. 3 is a trans- AAt the upper part of the inlet-passage ban :auxiliary deiector C extends above the cham- Eberv b', ov'er which chamber is arranged a 'communicating port or opening d, which establishes communication by means of intermediate passage 'dg'communica'ting with the chamber b', with the interior of the sheetmetal or other suitable casing E, which at its lower end is screwed into the screw-threaded flange b2. Adjacent .to the port d and extending downwardly toward the auxiliary deiiector C is a lip C2, while a short lip C3 also extends upwardly from the said deector O.

At the upper end of the casing E is a neck E, as usual, into which is screwed van inter- `nally-screw-threaded'`plug F, which is provided with a duct f. Onto the extension E/ is fitted, as usual, a cap F',which is provided with suitable orifices.

.Arranged within thecasing E is a cylindrical iioat G, which carries on its fiat top an upwardly-projecting needlevalve g, vwhile arranged within the lower open end of said float is a'diametrical cross-piece g', which at its mid-length is adapted to rest upon an upwardly-proj ectin g and centrally-arranged pin or abutment g2, extending from the deiector or diaphragm C. `The shape ofthe Iioat permits an equilibrium of pressure on both sides 4of the flat top. The point of rest of the oat G is so determined as that the needle-valve g hasbut a slight distance to move in order to move against the valve-seat f and-close the duct f. The iioat Gis guided in its rising and falling movements by means of curved baffles h h', `which extendinwardly from about the mid-length of the inner Wall of the casing E, the inner edges of said baflies conforming substantially to the curvature of the cylindrical float G. One of the baffles` namely, h`is arranged directly above the curved port d, so'that the'air or steam cannot pass directly upwardly andV out through the airloutlet, but the air is caused to assume 1 a circuitous or serpentine route.

The operation of my improved air-valve is as follows: .Vhen the valves of the radiator are opened so as to permit the steam to enter, the air in the radiator has to be forced out through the duct f. l. The air will thenpass through the inlet-passage b of the base-piece B into the chamber b', out through the port IOO cl, upwardly between the float G and the casing E, and through the duct f to the outer air, the cap F being of course raised. While the air is passing out, it is prevented, by means of the deilector C, the auxiliary deiiector C', andlips C2 and C3, from acting on the fioat G, so as to raise the saine and thereby prevent the escape of the air through the air-duct f. When the trapped water rises `in the casing E, it will rise correspondingly in the float G, the bottom of this float being open and admitting the water, as stated, until a sufficient height is reached, when the water will float the float G, so as to cause the needle-valve g to pass into and against the valve-seat f', thereby closing the valve and preventing the escape of water from the same. When the water recedes and falls back into the radiator A, Fig. 1, as usual, the ioat .G will then be released and drop down into place, and in so doing leave the air-passage f free and open, and the oat G will continue to rise and fall, as described, until all the air isout of the radiator, whereupon the steam will enter the radiator, as usual, pass thence to and in casing E, heat the float G, and cause the same to expand and move upward against valve-seat f', thus closing the valve and preventing the escape of steam from same,which condition will remain so long as steam is in contact with the float G, keeping same eX- panded and the outlet of the valve closed.

The lioat may be composed of hard rubber or vulcanite; but I do not limit myself to this material, as some other materials may be found suitable for the purpose.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In an automatic air-valve for steam-radiators, the combination with a` base-piece provided with suitable passages, a deiiector at the upper part of the base-piece, an opening at one side of the deflector, an auxiliary deiector in said passages arranged below said opening, and a casing mounted on the base-piece above the deflector and provided at its upper end with an air-duct, of a float arranged within the casing above the said deiector, to one side of said opening and provided with a needle-val-ve at its upper end adapted to close said air-duct, substantially as set forth.

2. In an automatic air-valve for steam-radiators, the combination with a base-piece, provided with suitable passages, a defiector arranged in a horizontal plane at the upper part of the base-piece, said deflector having an opening at one side and provided adjacent to said opening with an upwardly-projecting lip, and a casing supported on said base-piece above said delector and provided at its upper end with an air-duct, of a float arranged within the casing above said deflector and to one side of said lip and being provided with a needle-valve adapted to close said air-duct, substantially as set forth.

3. In an automatic air-valve for steam-radiators, the combination with a base-piece, provided with passages through the same, a casing arranged on the base-piece, and provided with an air-duct at its upper end, and baffle-plates projecting inwardly from the inner surface of said casing, of -a float arranged in said casing and guided by said baffie-plates in its up-and-down motion, said Iioat being provided with a needle-valve adapted to close said air-duct, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

LEONARD G. KIRK.

Witnesses:

GEO. W. JAEKEL, CARL KOELBLY.

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