US1566580A - Air valve for radiators - Google Patents

Description

W. J. COOK AIR VALVE FOR RADIATORS Dec. 22, 1925- Filed April 2, 1925 gwuentoz attozmq Patented Dec. 22, 1925.

UNITEDVSTATE'S WILLIAM Jycoox, or CHARLOTTE, NORTH canonnvn.

AIR VALVE FOR BADIATOBS] To all whom it may concern: H

Be it known that I, /VIL IAM J. Coon a citizenof the United States, and resident of Charlotte, in the-county of Mecklenburg and 'State of North Carolina, have invented a new and useful Air Valve for Radiators, of which the following is a specification.

The object of .my invention is to provide an improved air valve for radiators which will take care of all the waterthat may-accumulate from time to time caused by the shutting off of the radiator, and which therefore will result in a more efficient operation of the radiator and a less expenditure for fuel. I attain these and other objects of my invention by the device illustrated in the accompanying drawings,.in which- Figure 1 is a side elevation of my invention applied to a radiator; 7

Fig. 2 is a vertical section through vention;

Fig. 3 is a horizontal section on line 3.3 of Fig. 2, and i Fig. 4 is a horizontal section on line 4@l of Fig. 2.

Like characters of reference designate like parts in each of the several views.

Referring to the accompanying drawings, I provide an air valve base 1 which has a threaded connection with the radiator R. I

my inprovide a cup 5 having a threaded end 4: which I The opposite passages 11 which extend.

through lower float 8 are positioned with their openings under the bottom face of cover 13, as shown in Fig. 2, so that when lower float 8 is raised that operation will close the passages by reason of the contact of lower weight 8 with the bottom surface of cover 13. Screwed on the top of cup 5 is the cover 13 to which in turn is screwed a cap 21. The cover 13 is provided with an annular slanting top surface which provldes a seat for the annular flange 19 of the upper float 18. The latter member carries a lead or other soft metal packing member 20 in its upper portion, as shown in Fig. 1. I do not make use of composition packing for the reason that t does not work satisfactorily inasmuch as 1t heats up and expands which would cause the I valve to stick and not seat itselfwhen the pressure is low. A lead packing works much better than any composition pack1ng,and a Applieation' filed April 2, 1925. Serial No. 20,178.

composition packing therefore is not the equivalent forthe purpose of this invention.

. In operation the steam flo-wsthrough thechannel 3 ofbase 1 and thence through ch'annel 7 of cup extension 4 striking against the dome-shaped recess 10' of member 9- and belng diverted from chamber 6 to the opposite grooves 12 in-extension' 9 and float 8, which grooves communicate with the passages 11 whichextend through float:8. It then may pass through the space 14 between float 8 and cover 13 to the central 'aassage' 15 through cover 13, and thence-through the annular space 16 between upper float 18 and cover 13 and will raise the upper float 18 when there is sufficient pressure and escape through the space 23 whichseparates upper float 18 and cap 21, and thence pass out through the aperture 22 in the top of 21.

It is a well-known fact that there is no i system, either steam or vvacuum 'or vapor, that will give satisfactory results and permit of saving of fuel unless the system is clear "of water that may accumulate in it. Often radiators are turned off fromtime to time and water accumulates in the radiator and then 'when the steam is turned on, before the steam can get into circulation through each section air will begin to escape from the air valve and as soon as the air is out of the radiator water will follow before the steam can get in front of the water. By providing a heavy weight in the base and a small weight in the cap of my radiator valve I take care of all condensed water that may accumulate from time to time by reason of the main steam valve being closed. When the steam is turned on the air passes through the channels 11 ofthe bottom float and into the annular passage 16 under the upper float, raising that float to permit of the escape of steam past the annular seat 17 into the space 23 and through the vent 22. As soon as the air passes out water follows, in case there is water in the radiator and then the pressure of water raises the upper float 18 and its lead packing 2O presses against and closes the vent opening 22 in cap 21 and keeps it closed until the steam circulates into every section of the radiator. Then the water begins to circulate and returns to the boiler.

It takes only from three to five pounds of steam to raise the float or weight 8 in the lower portion of the valve and thus to close My valve Will not only Work on a steam system but will operate on a vacuum system,

because unless the air is drawn out of the vacuum system by a pump that is running all the time it Will cause trouble Whenmore .orless air accumulates. This valve provides a means for the escape of air when-a certaln pressure is exceeded. 7 Y

- What I claim is:

' 1. In a radiator air valve, thecombinationoi an air valve base, a cup mounted v secured on the cup, the cover having a pas-- sage through same, said cover having its bottom surface of suflicient area to seat over ."on the base andhaving apassage extending through the bottom of a cup, a float seated in the cup, saidfloat having opposite passages extending therethrough and positioned near its outer surface, a' cover "detachably the passages through the lowerfloat When that member. is raised, an upper float having [a-lead packing mounted on-its top portion, and a capdetachably secured to the cover .member covering the upper float and in spaced-relation thereto, the said cap having an opening positioned directly over the lead packingelement carried bythe upper float.

2. In a radiator-air valve, the:combination of an air valve base, a cup mounted on the base and having a passage extending through the bottom of the cup, a float seated in the cup, said float having .apassage exits outer surface, a cover detachably secured on the cup, the cover having a passage through same, said cover having its bottom surface of suflicient area to seat over the passage through the lower float when that member is raised, an upper float having a lead packing mounted on its top portion,

and a cap sdetaoh'ably secured to the cover member covering the upper float a'ndifin spacedrelationlthereto, the said: cap having an opening positionedd-irectly over'the lead,

packing element carried by the upper float. '3. In a radiator air valve, the combination of an airf valvebase, a -.cuplilre casing .mounted on the base, said" casing-having a passage in communication with the passage through the air valve base, a float seated in the I aforesaid casing, I a cover detachably secured to the casing and positioned in spaced relation to the float, said cover having aipassage therethrough, a cap "detachm ably secured to the cover, the cap having an opening therethrough, an upper float-member contained within the, cap and seated on the cover member theuaforesaid upper float having a soft metal packing ineinbeiq tending therethrough and positioned near,

mounted thereon and positioned to seal the opening in the capwhen there is suflicient pressure 111 the valve to raise the upper float.

WILLIAM J. oo'oK;

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