US1172751A - Thermostatic control for steam-traps. - Google Patents

Description

w. WfSTUBBS.

THERMOSTATIC CONTROL FOR STEAM TRAPS.

APPLICATION FILED Nov. 19. 191;.

1,172,751. Patented Feb.22,1916.

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UNITED STATES PATENT onnrcn. I

WILLIAM W. STUBBS, OF COUNCIL BLUFFS, IOWA, ASSIG-NOR TO ANTON PAWOL, OF

OMAHA, NEBRASKA. v

THERMOSTATIC CONTRQL FOR STEAM-TRAPS.

Specification of Letters Patent.

Application filed November 19, 1915. Serial No. 82,383;

'To all whom 2'25 may concern:

Be it known that I, VVILLIAM W. STUBBs, a citizen of the United States, residing at Council Bluffs, in the county of Pottawattamie and State of Iowa, have invented certain new and useful Improvements in Thermostatic Control for Steam-Traps, of which the following is a specification.

This invention relates to a thermostatic control for steam traps of the class used in connection with steam heating systems, power systems and'the like, and has for its object to provide means by use of which the temperature of steam may be regulated, and thereby preventing condensation and accumulation of dead steam, which, together with an excess of water often causes vibration of the pipes and radiators, and other undesirable features including loss of power Another object is to provide such a construction that the parts may be economically manufactured, will be durable, and will be automatic in operation.

With the foregoing objects in view and others to be mentioned hereinafter, the invention consists of the novel construction, combination and arrangement of parts as described herein and claimed and as illustrated in the accompanying drawing, wherein,-

Figure 1 is a sectional view through the casing and cap in line with its intake and exit port. Fig. '2 is a plan view of the casing, the cap being removed, and a part broken away and in section.

Referring now to the drawing for a more particular description, numeral 3 indicates a casing which provides an annular chamber 4 having a screw cap 5 in which, at its middle, is threaded a valve stem 6 of the valve 7, a suitable packing chamber 8 provided with a cap 9 being employed for the mounting of said stem. The intake for the casing or chamber 4 is indicated at 10,and a conducting pipe 11 is shown which may communicate with any required steam supply or generator for steam.

The outlet controlled by valve 7 is indicated at 12, a pipe 13being shownfor conducting steam from the chamber 4, for use as power or for heating, or other purposes. In

order that condensed steam may be automatically removed and that the steam may have, substantially, a uniform temperature in the pipes, a second valve 14 is provided for a control of a second outlet indicated at 15, this valve being provided with a short stem 16 which projects inwardly of the annular chamber 4; At 17 isindicated a receptacle of semicircular form, and, preferably, it has an irregular curvature. Its wall is of elliptical form in cross-section, and it is disposed edgewise in the chamber of the casing, its middle part being disposed near the intake 10, so that, in a measure, it will partly obstruct a free movement of steam passing within the casing from pipe 11', to quickly attain the same temperature as that of the moving contents of said pipe.

One of the ends of the receptacle 17 is provided with a head ahaving an aperture formed therein so that the chamber within thehead and the receptacle 17 which communicates therewith, may be filled with mercury'or any fluid or liquid which serves as a suitable conductor of heat or cold, a screw 6 being shown for making a closure of'said aperture. f

The head portion a is provided with a flange or base 0, and by means of the screw 19, the receptacle may be adjustably secured tothe bottom of the casing. A rock lever 18 is provided, its arm e being flexibly connected with the end of the'receptacle 17, adjacent thereto.

In order that the valve 14 may be under direct and effective control of the rock lever for a suitable contact with or withdrawal Patented Feb. 2 2, 1916.

of said valve from its seat, the terminal of the arm d is provided with curved prongs or bearings 70 within which is loosely seated the stem 16 of said valve, and, by means of the pivot-pin h, best shown in Fig. 1, the flexible connection is made.

At the terminal of the hollow, semi-circular receptacle, opposite to its filling-chamber or head a, said receptacle is provided with cars 20, to which the arm 6 of the rock lever is pivoted, and as thus described, the rock lever may have swinging movements on its pivot 21 for a control of the valve 14, said lever being under control of the thermostat or receptaclelT.

In operation, when the steam decreases in temperature, the receptacle 17 will be reduced in length, and thereby the valve 14 will leave its seat to permit water, vapor or main thus seated until condensation of steam will presently result and will cause the steam to return to a suitable temperature.

Among some-of the advantages to be derived by use of the device it may be stated inwardly, so that the cars will be disposed 1 nearer to the adjacent wall of the casing, and by this adjustment, the valve let will be withdrawn, slightly, from its seat, with the result that a higher degree of heat for the steam will be required for seating said valve and a higher degree of temperature for steam may be maintained. It will be appreciated that this adjustable feature is of importance, since it may be conveniently made, and in many instances, such as the quality of the water used for producing steam, or for changes in climate or weather conditions where steam is used forheating, it is desirable to make suitable adjustments so that the steam will have a suitable temperature. Another advantage is the fact that the receptacle 17 is elliptical in cross section andis disposed edgewise or with its transverse axis of greater diameter substantially at right angles to the intake pipe, so that heat coming from. said pipe will be readily absorbed. The advantages of this last named feature will be appreciated since,

in order that durability may be attained,:the jacket for this member 17, is preferably constructed of metal, and it'is, of course,- de sirable that said acket, as well as its conparts required are few in number, and.

manufacture will be comparatively inexpensive.

What I claim, and desire to secure by Letters Patent is,-

A steam trap, having in combination, an annular casing provided with a screw cap, an intake, an outlet, a valve seat and valve in the outlet, an elongated semicircular receptacle disposed within and adjacent to the side wall of the casing, said receptacle being provided at one of its. ends With a head having a flange projecting toward the middle of the casing, a rock lever having its respective ends flexibly connected with the valve and opposite end of the receptacle, and a keeper traversing the flange ofthe receptacle and engaging the bottom of the casing for adjusting the valve longitudinallyof the valve seat and to-maintain the signature inpresence of a Witness.

VILLIAM \V. STUBBS.

Witness HIRAM A. STURGES.

Copies of thispatent may be obtained'for five cents each, by addressing the Commissioner of Patents Washington, D. G.

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