US2312654A - Siphonless cock assembly - Google Patents

Description

Marh'2r1943- J.:D.LANGDON Y 2,312,654

sirnonmass COCK ASSEMBLY Filed Sept. 20, 1940 Patented Mar. 2, 1943 UNiTED STATES PATENT OFEHCE SIPHONLESS COCKASSEMBLY Jesse B. Langdon, Los Angeles, Calif. Application September 20, 1940, Serial No. 357,649

Claims.

7 This application is a continuation in part of application Serial No. 325,931, filed March 25, 1940 for Siphon breakers and valves, now Patent No. 2,294,785, granted September 1, 1942.

My invention relates to siphon breaking valves for the prevention of back siphonage of liquid into the supply line to which said valves are attached when a vacuum prevail in said supply line.

The primary object of my invention is to provide a valve device of the kind described wherein no cross connection exists between the refill tube provided to refill a toilet bowl with water durin the interim of filling a flush tank attached to the toilet bowl.

Another object of my invention is to design a ball cock mechanism as simply as possible for economical production.

Other and further objects will appear as the descriptive matter proceeds, and it is specifically understood that the reduction to practice illustrated by the drawing is for illustrative purposes only, and may be changed within the Scope of the claims.

Of the drawing:

Figure 1 is a cutaway portion of the valve assembly used partly in cross section, showing frame l and tubular casing 2.

Figure 2 is a horizontal sectional view; section as at 22, Figure l.

The cock assembly consists of an open frame I surrounded by a tubular casing 2, which extends downwardly and is assembled to frame I by a nipple 3 having a hexagon head shouldered to impinge tube 2 to hold same in position; the frame I acts as a supporting unit for an inlet tube 4 extending through the lower frame portion A and formed with a seat 5 at its upper extremity. A refill tube I is supported by the nip-'- ple 3 which enters a refill cupped recess B recessed into a portion of the lower frame A. The upper end of the tube 4 forming the seat 5 is covered by valve member 6 which has a stem C which projects upwardly through the top D of frame i, Which is provided with a thin lug E having a split lever 9 straddling the same. A fulcrum pin it] is disposed through the lever 9 and lug E to hold lever 9 in operative position.

The valve member 8 is provided with an annular skirt F which surrounds the seat 5 and causes fluid flowing through tube 4 to be projected downwardly into cup B to supply liquid and force same through refill I.

It will be noted that there is no connection to retain liquid in proximity to the seat 5, as the opening G betweenthe lower frame portionA and the tube 2 is entirely open to the free l of any liquid passing through the inlet tube 4. Thus there is no cross connection established between the refill tube 7, and the liquid inlet 4.

A ridge H is provided, circumscribing the split lever 9 in such a manner as to provide a ridged contact for the upper end of stem C providing a minimum of lateral stress between the lever and the stem C. p

The operation of the siphonless ball cock assembly is substantially as follows:

Where a float control is used in a toilet supply tank which has been evacuated of liquid, the lever is operated to allow fluid to flow through inlet 4 by raising valve member 6, the skirt of which functions as a shield to project liquid downwardly int?) cup B. Meanwhile the tube 2 functioning as a casing drives the flow of liquid downwardly.

In case a vacuum is exerted through inlet 4, atmospheric pressure is allowed to enter same freely without causing the aspiration of either air or liquid into refill tube 1 for the reason that there is no connection between inlet tube 4 and refill tube 7. Furthermore, refill tube 7 is contiguous to cup B which is so placed that the sweep of air entering inlet 4 is not effective to cause aspiration to the refill 7.

Having described the invention and that which is new, I claim: I

1. A siphonless cock assembly comprising a framework having two narrow parallel upper and lower frame portions spaced apart and opposing one another, the lower frame portion having a threaded port therethrough, a supply tube mounted in said port and projecting above said lower frame portion and forming an inlet and valve seat, a valve member mounted between the frame members and adapted to engage said valve seat, the upper frame portion having means to guide said valve member, said valve member comprising a bellshaped portion having a periphery made of flexible material forming a skirt capable of being spread radially outward by fluid pressure from Within the bell, means attaching said upper frame portion to said lower frame portion in spaced relationship, a tubular casing surrounding the ends of the narrow frame portions and being attached in fixed relationship thereto and forming open airports either side of said narrow frame portions, the periphery of said valve member capable of being urged radially outward to minimize the tendency of any liquid passing through the inlet to use above said inlet inside of said tubular casing.

2. A device as in claim 1 having a conduit in said lower frame portion terminating at one end beneath said bellshaped portion and having its other end in communication with a refill pipe, said one end of said conduit facing the inside of said bellshaped member to catch and divert a portion of any liquid flowing from the inlet, said tubular casing constituting an outlet conduit.

3. A device as defined by claim 1, the valve member having a stem cooperating with the guide means in said narrow frame portion opposite the valve seat, said frame portion having finlike,

means projecting therefrom which forms a part of said guide means for said stem and a mounting for a float lever and a fulcrum rest fora pin extended through a lever and saidfulcrum rest, said lever having a narrow projection contacting the end of the valve stem, the finlike projection constituting a guide for saidstem.

45. A valve device comprising a tubular casing open at its upper end, a frame member secured in the open end of said casing, said frame member including a base member, a topmember spaced from the base member, and an arm extending from each end of the base member to form a rigid connection between the base and top members, an opening through the central portion of the base member, a Water inlet pipe secured in said opening and terminating between said base and top members to provide a valve seat, a second opening through said base member and said casing to one side of said first-mentioned opening for connection to a refill tube, an aperture in said top member, a valve having a stem slidable in said aperture, said valve including a central portion to engage said valve seat and a laterally extending skirt portion adapted to surround said valve seat when the valve is closed and covering said second-mentioned .opening to direct water therethrough when said valve is opened, the sides of said base memberbeingspaced from the inner surface of said casing to allow free passage of fluid into said casing, and means to hold said valve on said valve seat. I

5. A valve device as of claim 4 said means including an actuating lever for the valve, and a, ridge-like projection on the lever contacting the

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