US508017A - Automatic air-valve for hot-water radiators - Google Patents

Description

(Nd Model.)

E. SQHOYT. AUTOMATIC A-IR VALVE FOR HOT WATER RADIATORS. N6. 508,017.

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NITED STATES PATENT OFFICE.

EZRA S. 'I-IOYT, OF DETROIT, MICHIGAN.

AUTOMATIC AIR-VALVE FOR HOT-WATER RADIATORS.

SPECIFICATION forming part of Letters Patent No. 508,017, dated November 7, 1893.

Application filed July 9, 1892. Serial No. 439.507- (No model.)

of the United States, residing at Detroit, in the,

county of Wayne, State of Michigan, have invented certain new and useful Improvements in Automatic Air-Valves for Hot-Water Ra diators, of which the following is a specificatwo, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in air valves for hot water radiators, and it has for its objects among others to provide a simple and cheap valve, readily accessible for repairs or other purposes, not liable to get out of order or leak, and in which the valve will be seated by the buoyancy-0f the float carrying it. I provide the valve casing with .a removable top provided with a valve-seat, and within this casing is arranged a float of any suitable material carrying atits upper end or side a valve fitted to the said seat and it may carry at its lower end a guide; this guide may however sometimes be omitted if desired. A suitable cook or valve is provided which allows of the shutting ofi of the water to renew, repair or clean the valve without draining the water lines in the building.

Other objects and advantages of the invention will hereinafter appear and the novel features thereof will be specifically definedby the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the let-.

ters of reference marked thereon, form a part of this specification, and in which- Figure 1 is a centralvertical section through my improvement. Fig. 2- is a plan thereof with the cap removed and a portion ofthe float broken away.

I Like letters of reference indicate like parts in both of the views.

Referring now to the details of the drawings by letter, A designates the shell, body, or case' of the device which may be of brass, or any suitable material provided with a central vertical passage a from its bottom communicating with a horizontal passage a through the nipple B which is exteriorly threaded for connection with the radiator and which is provided with a suitable cock C by means of which the water can be shut off when necessary for the purpose of renewing, repairing or cleaning the valve. The body or case is threaded at its upper end to receive a removable threaded cap D which is provided with a valve seat d and an air passage d" as shown in Fig. 1.

E is a float arranged to move loosely within the body or case and while I preferably make this of cork it may be formed of aluminum, or other light substance or material. It carries at its upper side a valve e fitted to the valve seat in the top and at its lower end a guidef which may be acontinuation of the valve stem if desired as seen in Fig. 1. The inner face of the cap and the inner face of the bottom of the case are slightly conical as seen in Fig. 1 so as to prevent such flat and direct contact of the float therewith as to create a suction to prevent its operation. It will be observed that the upper face of the bottom wall of the shell or body A is slightly conical and that the under face of the cap D is tapered slightly from the center toward the periphery as clearly shown in Fig. 1 whereby the float E touches only at the highest or central portion of the said bottom and inner face of the cap so as to leave at all times a space between the upper or lower faces of the float and the cap or bottom of the shell, and the limit of movement of the float can be regulated by screwing the cap up or down as oocasion may require and still prevent the float from coming in contact. with the under face of the cap except at the central portion thereof.

.The operation will be readily understood from the foregoing description when taken in passage in the bottom of the case and at its upper end carrying a valve for closing the passage in the top, substantially as shown and described.

2. The herein described radiator attachment, consisting of the case having a central vertical passage through its bottom and a threaded nipple having horizontal passage communicating with a vertical passage, a cock controlling the passage in the nipple, a top having an air passage therethrough and a valve seat, a buoyant body within the case and loosely guided at its lower end in the vertical passage in the bottom of the case and at its upper end carrying a valve for closing the passage in the top, the said stein having a shoulder below the valve against which the buoyant body engages, substantially as described.

3. The combination with the case having a right angled screw-threaded nipple with a continuous passage through the same and through the bottom of the case, of a cock-controlling passage through the nipple, an ad; justable cap to said case having conical valve seat with air passage leading outward therefrom, a cork float within the case and 'a guide rod passed vertically through the float and held therein by friction with its lower end extending into the passage in the bottom of the case and its upper end conical to fit the valve seat and having a shoulder against which the upper face of the float engages, substantially as specified.

4. The combination with the case having integral bottom and walls and threaded nipple with passageway, the bottom of the chamber thereof being inclined from the central aperture toward the periphery, of a removable and adjustable cap having vent and central tapered passage-way communicating therewith, the inner wall of the cap being inclined from the passageway toward the periphery inversely of the taper of the bottom of the chamber, a float within the chamber and a valve held in the float with its lower end projecting to be guided in the passageway in the bottom of said chamber, substantially as shown and described.

In testimony whereof Iaflix my signature in presence of two witnesses.

EZRA S. HOYT.

Witnesses:

ELBRIDGE F. BACON, J. B. IIoUcK.

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