US2137561A - Valve - Google Patents

Description

NOV. 22, 1938. A- N ASSELJN 2,137,561

VALVE Filed June l5, 1936 :NvEN-ron ATTORNEY Patented Nov. 22, 1938 UNITED STATES PATENT OFFICE.

Application June 15,

Claims.

My invention relates to improvements in valves for humidifying apparatus for radiators, particularly'steam and hot water radiators.

The primary object of my invention is to pro- 5' vide an eicient valve for humidifying apparatus for, use in maintaining the proper degree of humidity and purifying the air in rooms heated by steam or hot water radiators and which is adapted for attachment together with said apparatus to standard types of such radiators and substantially concealed from View thereby.

Other objects are to provide a valve apparatus of the character and for the purpose above set forth for use in connection with evaporation tanks adapted to be set into the radiators in concealed positions and a fresh water supply for said tanks, and which is equipped with means controlled by the amount of water in said tanks to maintain said water at a fixed level and also ,controlled by an oversupply of water passing thereinto to shut ofi said water supply.

Other objects are to provide a valve for the purposes above described which may be easily installed together with a humidifying apparatus on modern radiators, is absolutely reliable in operation, proof against flooding or leaking, requires a minimum amount of attention, and is comparatively inexpensive to manufacture.

Other and subordinate objects, together with the exact nature of my improvements, will be readily understood when the following description and claims are read with reference to the drawing accompanying and forming part of the specication.

In said drawing:

Figure 1 is a view in top plan, parts showing in section, of a control valve interposed in the line of connection between supply and evaporation tanks. Figure 2 is a view in vertical longitudinal section of said valve.

My control valve 5 comprises an upstanding valve casing I5 forming a valve chamber I6 therein, a depending float casing I'I forming a oat chamber I8 therein and an intermediate casing portion I9 between said casings connecting the bottom of the casing I5 to the-top of the casing II to establish communication between said chambers I5 and i8. A pipe line 50,. 28 connectsY the top of the valve chamber I5 with one end of a supply tank (not shown) adjacent to the bottom of the latter. A branch line connects the bottom of the iioat chamber I8 to evaporation tanks (not shown) at a 55- point adjacent to the bottoms thereof and also connects said evaporation tanks with each other. A needle valve member 2| is slidably mounted in the valve chamber I6 for movement in opposite directions into engagement with oppositely disposed valve seats 22 and 23 to close said 1936, Serial N0. 85,408

chamber in either direction of its movement therein. The, lower end of the valve member 2I extends into the intermediate casing portion I9 and is bifurcated, as at` 24, for a purpose presently seen. A telescopic plunger rod 25 is slidably mounted in the top of the float chamber casing Il, centrally of the latter, in a sleeve 25 inserted through said top and into said charnber. The plunger rod 25 comprises upper and lower telescopic sections 2'I and 28 having a slot and pin connection 29 and 3G, respectively, therebetween, for a purpose presently seen. The lower end of the section 28 is provided with a rubber tip 3I and the outer end of the upper Isection 2l' with a hand-grip portion 32 and a lateral flange 33 below said portion. A coil spring 34 is interposed between the top of said casing Il and a washer 35 resting on a pin 38 passing through the lower end of the section 28. A bifurcated bracket 3l. is secured by rivets 38 in the intermediate casing portion I9 to the top wall thereof. A rocker arm 39 is pivotally mounted intermediate its ends, as by a pin 48, between the bifurcations of brackets 3l for vertical swinging movement. One end of the rocker arm 39 is operatively connected to the extending end of the valve member 2I, between the bifurcations thereof, by a pin 4I. The other end of the rocker arm 39 projects into the oat chamber I8 and has suitably secured thereto a cylindrical float 42 closed at its bottom and depending into said chamber with the plunger rod 2l extending thereinto centrally thereof.

The plunger rod 21 is normally held elevated above the bottom of the float 42 and the spring 34 compressed by means of a trip latch 43 in the form of a hook pivotally mounted in the lugs 44 on the casing portion IS to straddle said portion and for engagement of one end thereof with the under side of the iiange 33. An overflow pan 45 is swingably and removably mounted between the arms of the latch 43 at the other end thereof and beneath the intermediate casing portion I9. A short sleeve 48 providing an overflow duct 41 is inserted upwardly in the bottom of said portion I9 to extend slightly above said bottom and above said pan.

The arrangement of the described parts is such that the float 42 normally counterbalances the valve member 2| into an intermediate opening position. In the described normal position of the parts, the water from the supply tank is free to flow through the valve 5 into the evaporation tanks, as will be understood. When the water has reached a proper level in the evapora- -tion tanks, and in the float chamber I8, the float 42 rises and seats the valve member 2I against the lower valve seat 22, thereby cutting off the supply of water. Under these conditions the level of the water in the valve 5 is slightly beleakage of an oversupply of water into the valve 5, for instance, in the case of improper engagement between the valve member and the seat 22, the consequent overflow into said valve escapes through the port 4l into the pan 45 and upon su'icient accumulation therein swings the trip latch 43 out from under the flange 33, thereby unlatching and releasing the plunger rod 21. Upon release of said rod the spring 34 thrusts said rod downwardly against the bottom of the float 42, thereby thrusting the latter downwardly and operating the valve member 2| in the opposite direction against the valve seat 23 to close the valve 5 at this point.

The beforementioned slot and pin connection 29 and 3i) between the sectionsl 2l and 28 of the plunger rod 25 is in the nature of a safety provision, preventing said rod from being thrust downwardly beyond its valve-seating position. For this purpose the slot 29 and pin 3Q are arranged so that in the valve-seating position of the rod Z5 further downward pressure thereagainst is ineffective against the section 28.

The parts are re-conditioned for operation by pulling the plunger rod 25 outwardly, by way of the hand-grip 32, swinging the trip latch to its described position beneath the plunger 33 and suspending the pan 45, emptied of its contents, on said trip latch.

The foregoing constitutes a detailed description of a preferred embodiment of' my invention and it is believed that its operation and construction will be clear therefrom.

Obviously, however, the details described may be varied without departing from the inventive concept disclosed, and it is to be understood that right is herein reserved to all such modications falling fairly within the scope of the protection prayed.

What I claim is:

l. A valve adapted to contain water at a fixed level and for the overflow of water therefrom beyond said level, a valve member in said valve operative in opposite directions to different closing positions, respectively, operating means for said member including a oat operative by rise of the water to said levelto operate said member in one direction, a tensioned plunger for operating said member in the opposite direction and movable to an ineiective position, and means for holding said plunger in said position and including a rocking trip yoke interlocking with said plunger, and a pan mounted on said yoke for receiving overflow water from said valve and tripping said yoke by the weight of water therein to disengage said yoke from said plunger.

2. A liquid level controlling valve comprising a housing having an outlet port, an inlet chamber carried by said housing provided with spaced apart axially alined valve seats, a valve member in said chamber, a float in said housing, a rock lever carried by said housing having the ends thereof connected to said valve member and said float respectively, spring-pressed means carried by said housing engageable with said float to lower said float in the liquid against the buoyancy of said float, said housing having an overflow port, a receptacle below said overiiow port, and a rockable supporting member for said receptacle having an end thereof engageable with said springpressed means to normally hold said springv 2,137,561 `low the top of the sleeve 46. In the event of pressed means against operation, the weight of liquid in said receptacle swinging said supporting member to a position disengaged from said springpressed means.

3. A liquid lever controlling Valve comprising a housing having a lower outlet port and an overiiow port above said outlet port, an inlet chamber carried by said housing provided with spaced apart axially alined valve seats, a valve member in said chamber, a float in said housing, a rock lever carried by said housing having the ends thereof connected to said Valve member and said oat respectively, a spring-pressed plunger slidably carried by said housing engageable with said float to lower said oat in the liquid against the buoyancy of said float, said housing having an opening through which said plunger engages, a receptacle disposed below said overflow port, and a rockable supporting member for said receptacle having an end thereof engageable with said plunger to normally hold said plunger against operation, the weight of liquid in said receptacle swinging said supporting member to a position disengaged from said plunger.

4. A liquid lever controlling valve comprising a housing having a lo-wer outlet port and an overflow port above said outlet port, an inlet chamber carried by said housing provided with spaced apart axially alined valve seats, a valve member slidable in said chamber, a oat in said housing, a rock lever carried by said housing having the ends thereof connected to said valve member and said float respectively, spring-pressed means carried by said housing engageable with said float to lower said iioat in the liquid against the buoyancy of said float, a receptacle communieating with said overflow port, and a combined trigger and receptacle supporting member rockably carried by said housing, said supporting member having an end thereof engageable with said spring-pressed means to normally hold said spring-pressed means against operation, the weight of liquid in said receptacle swinging said supporting member to a position disengaged from said spring-pressed means.

5. A liquid lever controlling valve comprising a housing having a lower outlet port and an overflow port above said outlet port, an inlet chamber carried by said housing provided with spaced apart axially alined valve seats, a valve member in said chamber, a iioat in said housing, a rock lever carried by said housing having the ends thereof connected to said valve member and said float respectively, a spring-pressed plunger in said housing engageable with said lloat to lower said float in the liquid against the buoyancy of said float, a flanged sleeve slidably carried by said housing engaging about a portionof said plunger, said sleeve having opposed elongated slots, a. pin carried by said plunger loosely engaging in said slots, a receptacle disposed below said overflow port, and a rock member carried by said housing having one end thereof detachably secured to said receptacle and thev other end thereof engageable with the flange of said sleeve to thereby hold said plunger in inoperative position, the weight of liquid in. said receptacle swinging said rock member out of engagement with said flange to thereby release said plunger for engagement with said float.

ARTHUR N. ASSELIN.

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