US957592A - Valve. - Google Patents

Description

E. P. ALLEN.

VALVE. APPLIOATION FILED APR. 15, 1905.

Patented May 10, 1910.

Jig Mentor 60% flax.

s'r'rns Pagan orrion EVERETT I. ALLEN, CHICAGO, ILLINOIS, ASSIGNOB TO NORWALL MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

. VALVE.

Specification of Letters Patent.

Patented May 10, 1910.

Application filed April 15, 1905. Serial No. 255,761.

oago, county of Cook, State of Illinois, have invented a certain new and useful Improvement in Valves, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accom anying drawings, which form a part 0 this specification. v

My invention relates in eneral to valves for controlling the flow of fluid through a conduit, and more particularly to valves used in heating systems intermediate of the radiators and pipes for supplying the heating medium.

It is customary in steam and hot water heating systems to provide hand-operated valves for controllin the flow of the heating medium to the ra iator. Much difliculty is experienced in preventing leakage of the heating medium from the valve casings into which the valve operating stems extend. It is usual to provide packing of some sort around the valve stems which is however objectionable owing to the fact that the materials best adapted for producing a tight joint deteriorate from contact with the steam and packings formed of other materials be come loose with usage.

The primary object of my invention is to provide a valve for controlling the flow of fluid through a conduit which will require no packing 1n order to render the same proof against leakage.

A further object of my invention is to provide a valve for' controlling the communication of a radiator with a steam heating system which will be comparatively simple in construction, inexpensive in manufacture, and eflicient and durable in use;

The embodiment of my invention herein disclosed may be generally described as con sisting in a valve casing, a valve seat within said casing, a valve adapted to engage and disengage the valve seat, a stem for operating the valve extending within a tubular extension of the valve casing but longitudinally immovable relatively thereto,.an annular flange rigidly secured to the valve stem, 21 seat at the upper end of the extension of the valve casing with which said flange engages, a cap surrounding the valve stem and secured to the upper end of the extension of the valve caslng, anda spring interposed between said ca and said flange its cooperating seat. Y

My invention will be more fully described hereinafter with reference to the accompanying drawing in which the same is illustrated as embodied in a convenient and practical form, and in which,

Figure 1 is a central sectional view, and Fig. 2 a cross section on line 2-2 Fig. 1.

The same reference characters are used to designate the same parts in the two figures ofthe drawings.

Reference letter A designates the valve casing which isadapted to be interposed between a conduit for a heating medium and a radiator.

A indicates an interiorly screw-threaded coupling formed integrally with the valve casing which is ada ted to be united to the conduit through which the heating medium flows. l

A indicates an exteriorly screw-threaded coupling formed integrally with the valve casing and adapted to be connected to a radiator by a short section of pipe A.

0, indicates a ring engagin the coupling A and securing thereto the pipe section A B designates a tubular extension of the valve casin provided with an exteriorly screw-threa ed lower end which is received within the upper portion of the valve casing. A circular seat 72 preferably convex in cross section is formed at the upper end of the tubular extension B of the valve casing. A valve stem E extends within the upper portion of the valve casing and is provided with an annular laterally projecting flange e which over-lies and engages the seat 6.

F designates acap which surrounds the valve stem E and is in screw threaded en-' gagement with the upper end of the tubular extension B of the valve casing. A spring f is interposed between the upper end of the cap F and the flange e the tension of which retains the flange in close contact with the under-lying circular seat 7f.

;E indicates a disk or other form of handle rigidly fixed to the upper end of the valve stem E for rotating the latter.

C designates the valve within the casing A which is adapted to engage the-seat a to cut oil the flow of the heating medium for retaining the latter in tight contact with through the valve casing and is adapted to be moved away from its seat to permit the flow of the heating medium to the radiator.

Any suitable intermediate connectlng mechanism may be provided for uniting the valve stem E to the valve Owhereb the latter may be actuated to engage and isengage its seat.

I have illustrated in. the drawing'practical and-convenient means for o erativel connecting the valve stem and via ve whic may be described as follows: The valve C is provided with a hollow interiorly screwthreaded shank G into which extends an ext eriorly screw-threaded rod 03'. The rod 1d 1s provided with laterall projecting lugs B of the casing.

' The operation of my improved valve is as follows: When the parts are in the position indicated in Fig. 1, the valve is closed and is communicated through the valve stem E to the rod D which through engagement of the lugs D thereon with the thread B withm the upper portion of" the casing elevates the rod D and thereby lifts the valve G away from its seat a through the screw-threaded engagement of the lower end of such rod with the shank of the valve. -When the valve is in its open position it is moved downwardly into contact with its'seat by rotating the hand diskE in a reverse direction thereby moving downwardly the rod D and with it the valve C. v

The tension of the spring F at all times retains the flange e in tight contact with the convex circular seat the leakage of any of the heating medium or whatever fluid is contained in the conduit with which the valve communicates. As the under surface of the flange e is flat while the upper surface ofiits cooperating seat is convex, the relative rotation between such parts always insures such a close. ment between the same as to render the va ve casing fluid pressure tight without the use of packing material.

From the for oing description it will be e observed that I l iave invented an improved valve which will at allt'imes prevent leakage of the fluid controlled thereby without the use'of packing,

washer, or gasket such as are 1n01'd61 to open the same the hand disk. E? is rotatedtoward the left. Rotary motion thereby preventing.

enga e- 'of' a valve seat therein,

a valve casing, a valve cooperating a two-part rotary means operatively connecting the lower part of said stem and valve, an

annularflange having a flat under surface carried by the upper part of said stem and projecting around the same, a convex seat at the upper end of said casing over which said flange extends, and means for retaining said flange in close contact with said convex seat.

2. The comblnation with a valve casing, of a valve seat therem, a valvecooperatmg H with said seat, a two-part rotary valve stem extending within the valve casing, means operatively connecting the lower part of said stem with said valve, removing said valve relatively to the lower part of said valve stem, an annular flange carried by the upper part of said stem and projecting aroun the same, a circular seat at the upper end of said casing over which said flange extends, a cap surrounding the valve stem and secured to the upper end of the valve casing below said seat, and means inclosed within and interposed ,between said cap and said flange for'retaining the latter in close contact with said circular seat.

3. The combination with a valve casing,

of a valve seat therein, a valve 006 erating with said seat, a two-part rotary va ve stem extending within the valve casing, means operatively connecting the lower part of said stem with said valve, removing said valve relatively to the lower part of said valve stem, an annular flange. carried by the upper part of said stem and projecting around the same, a circular seat at the upper end of said casing .over which said flange extends, a cap surrounding the valve stem and secured to the upper end of the valve casing below said seat, and a spring inclosed within said cap for retaining said capin close contact with said circular seat. N

4. The combination with a valve casing, of a valve seat therein, a valve cooperating with said valve seat, a rotary valve stem, means operatively connecting said stem and valve, an annular flange having a flat under surface carried by said stem and projecting around the same, a convex seat at the upper end of said casing over which said flange extends, a cap surrounding said valve stem andsecured to the upper end of said valve casing below said seat, and a spring inclosed within and interposed between said cap and said flange for retaining the latter in close contact with said convex seat.

5. The. combination with a valve casing, a valve cooperating with said seat, a rotary valve stem, means operatively connecting said stem and valve, an annular flange having a flat under surface carried by said stem and projecting around the same, the upper end of said valve casing being reduced to form a convex circular seat over which said flange extends, a cap surrounding said "valve stem and engaging screw threads on the exterior of the valve casing below said convex seat, and a spring incloscd within and interposed between said cap and flange for retaining the latter in close contact with said convex seat.

6. The combination with a valve casing, a valve in said casing, a tubular extension on said casing, said tubular extension having its upper edge formed into a seat, a valve stem projecting through said extension, :1 flange on said steni engaging said seat, a cap screw-threaded upon said extension, and means interposed between said cap and said flange for forcing the flange against the seat when-said cap is secured in place.

' 7. In combination with a valve casing, a

valve in said casing, a tubular extension on said casing, said tubular extension having its upper edge rounded in the form of an annular bead so as to make a seat, a valve stem projecting through said extension, a flange on said stem engaging said seat, a cap adjustably secured upon said extension, and means interposed between said cap and said flange for forcing said seat.

In testimony whereof, I sign this specifi cation in, the presence of two Witnesses.

E. P. ALLEN.

Witnesses: i

GEO. L. WILKINSON, C. A. MULLEN.

the flange against

Images