US811939A - Feed-water mechanism. - Google Patents

Description

PATENTED FEB. 6, 14906.

W LOUDON L J J HENDRICKS FEED WATERMECHANISM.

APPLICATION FILED MAILzz, 1905.

PATENT OFFICE.

UNITED STATES p FEED-WATER WIECHANISIW.

Specification of Letters Patent.

Patented Feb. 6, 1906.

Application lecl March 22, 1905. Serial No. 251,473.

To all whom it Trl/ty con/cern.-

Beit known that we, WILLIAM LoUDoN and JOHN J. HENDnIoKs, citizens of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Automatic Feed Water Regulating Mechanisms; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in automatic feed-water-regulating mechanism for boilers.

One of the numerous objects in view is the provision of peculiarly-constructed means for automatically supplying water to a boiler for maintaining the water in the boiler at a predetermined level.

Another object of the invention is the construction of a simple and durable regulating mechanism involving a minimum number of parts and which is highly efficient.

With these and other objects in view the invention consists of certain other novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the claims hereto appended.

In the drawings, Figure 1 is a transverse fragmentary view of a boiler, showing our improved feed-water-regulating mechanism secured thereto and said mechanism being shown partly in section. Fig. 2 is a fragmen tary view of a boiler, showing an end view of our im roved mechanism and a fragmentary view o i a reservoir or the like from which the supply of liquids to the boiler is obtained.

Referring to the drawings by numerals, 1 designates a boiler of any ordinary type, upon which our feed-water regulator is secured.

The feed-water-regulating mechanism comprises a three-way base member 2. The base member 2 is provided with an internallyw screw-threaded surface 3, which is employed for removably securing a comparatively small pipe 4 in an assembled position with said member 2. A screw-threaded surface 5 is formed upon the depending extension 6 of the base member 2, the screw-threaded surface 5 being employed for removably securing a comparatively large outer apertured tubing or pipe 7 in an assembled position with the base member 2. A portion of the base member 2 projects slightly beyond the screw-threaded surface 5 and upon which is formed a screw threaded surface 8. The screw-threaded surface 8 engages the threaded surface of the apertured portion formed in the boiler when said base member 2 is in its normal position upon the same.

lt will be obvious that the screw-threaded surface 8 projects beyond the threaded surface 5, for the reason that after the apertured tubular member 7' is positioned upon the base member 2 the same must be inserted into the boiler through the apertured portion in which the member 2 is to be removably secured. The tubular member 7 is of suiiicient length to at all times have its lower end submerged in the water contained in the boiler, but the small inner tubular member or pipe 4 is of less length than the outer tubular member 7, for the reason that throughthe medium of this pipe the lower end of member 7 is always submerged in the water of the boiler, or, in other words, it extends below the water-surface. While the water outside of the tubular member 7 may be disturbed, the water within the member 7 will be undisturbed, and therefore obviate the possibility of the regulating mechanism being operated when water is not required within the boiler, as it will be seen that if the liquid was disturbed or rolling in the boiler the lower end of the tube or pipe 4 would be uncovered and permit of the steam to pass up into the valveactuating expansible tubing 9 and operate the valve 1() when perhaps it was not necessary. When the water surface or column of liquid in the boiler 1 falls below the lower end of the tubing 4, steam contained between the outer surface of the tubing 4 and the inner surface of the tubing or member 7 will be permitted to pass into the tubing 4. Steam is contained between the two tubings 4 and 7 by means of the apertures or perforations 11, which are formed in member 7.

The expansible tubing 9 is ellipse shape. The ends of the ellipse are provided with right and left screw-threaded surfaces adapted to be positioned within the similarly-constructed threaded internal surface of the base member 2 by threading the member 2 upon the ends of the ellipse by turning the same over and over until the ends of the tubing 9 are positioned a sufficient distance therein.

The valve-casing 12 is secured to the upper portion of the base member 2 by means of bolts 13. The valve-casing 12 1s provided ICO IIOy

with an extension 14, having an inlet-opening, and an extension 15, having an outletopening. The inlet-opening communicates with the compartment 16 of the valve-casing 12, while the outlet-opening communicates with the compartment 17 of said casing. The valve-casing is provided with a double valveseat 18 18, which is adapted to receive the two members 10a, constituting the valve 10. Aremovable cap 19 is secured upon the valvecasing 12. The cap 19 is provided with an aperture through which extends the valvestem 20. The valve-stem 2() is secured to the valve 10 at one end and is adjustably secured to a yoke or depending member 21, secured to the expansible tubing 9 at its highest point. lA stuffing-box 22 is formed upon the cap 19 for preventing the escape of liquid which may be contained in the compartment 16 of valve-casing 12. The stem 20 is provided with an integral extension 28, which is employed for adjusting the stem. The adjustment of the stem 2() is desired when the valve 10 is not properly seated in the valvecasing. A jam-nut 24 is positioned upon the same for locking said stem in an adjusted position. It will be seen that the upper end 25 is threaded into the yoke 21 and that by this construction the same may be removed from said yoke or adjusted longitudinally thereof. A vent-valve 26 is assembled with the yoke 21 and provides direct communication between the interior of the tubing 9 and the outer atmosphere. The valve 26 is provided with a revoluble manuallyoperated valve member of any ordinary type. It will be noted that this valve is employed for permitting of the escape of atmosphere contained in the tubing 9, as it is a fact that often superfluous atmosphere is contained in the tubing, which, if not allowed to escape, would effect the operation of the mechanism.

The valve 10 is provided with depending legs constituting guides for positively directing the members 10a to a seated position. After the mechanism has been assembled upon the boiler it may be found that the valve 10 is not properly seated within the casing, and therefore such contingency is anticipated in the adjustable structure of the valve through the medium of the stem.

In diametrically opposite positions upon the elliptical expansible member 9 there are positioned yokes 21a and 2lb. The yokes 21a and 21b are positioned upon the narrowest portion of the ellipse and are connected to the valve-casing by means of adjustable stay-rods 27. Each of the rods 27 is provided with threaded ends, the outer end being adjustably secured to one of the yokes by means of a nut 28. The inner end of the stay-rod is threaded into one side of the valve-casing. The rods 27 extend from opposite sides of the casing 12 in the same-horizontal plane, Each of the yokes 21EL and 21b are apertur'ed for sii-'1,936

forming an opening 29 for affording means whereby the nut 28 of the rod 27 may be adjusted.

When the water-surface in the boiler has fallen below the lower end of the small inner tubular member 4, steam contained in the boiler having passed through the apertures 11 into the compartment formed between tubings 4 and 7 will pass into the tubing 4 and up through the three-way passage of the base member 2 into the ellipse 9. The ellipse 9 being formed of an expansible tubing will expand, and as the stay-rods 27 will prevent of any longitudinal expansion said expansion of the tubing 9 will be in a vertical plane. The expansion of the tubing 9 through the medium of the valve-stem 20 will cause valve 10 to be unseated and permit of the passage of liquid from the inlet-pipe 80 through the valve-casmg and out through the outlet-pipe 31 to the boiler. The outlet-pipe 31 may be connected to the boiler in any ordinary manner. While we have shown in Fig. 2 a receptacle 32, constituting a reservoir, for supplying liquids to the valve-casing 12 through the medium of inlet-pipe 8O by gravity-feed, a force-pump may be connected to pipe 30 or pipe 30 may be supplied with liquid in any preferred manner, as the manner of supplying liquid to pipe 30 is entirely optional` What we claim is- 1. A mechanism of the class described, comprising a base member, provided with a three way passage, an apertured, hollow member removably secured to said base member, an inner tubular member of less length than said apertured member removably secured to said base member, an elliptical, expansible tubing provided with right and left threaded surfaces formed upon its ends removably secured to said base member, a valve-casing secured to said base member, said valve casing having an inlet and outlet opening, a movable valve positioned within said casing, yokes positioned upon said tubing at diametrically opposite points, adjustable stay-rods connecting said valvecasing and yokes, valved means secured to said tubing and providing direct communication between the interior of said tubing and the outer atmosphere, a valve-stem secured to said valve, said stem provided with an integral extension, and means for adjustably securing said valve-stem to said tubing.

A mechanism of the class described, comprising a base member provided with oppositely right and left threaded openings and a threaded opening formed at right angles to said openings, an inner tubing threaded into said right-angled opening, an apertured, outer tubing of greater length than said inner tubing removably secured to said base member, an elliptical tubing provided with right and left threaded surfaces formed upon its ends secured within said base member, a valve- IIO t I Y p casing removably secured upon said base member, a movable valve positioned within said valve-casing, a removable cap carried by said casing, said valve comprising members provided with depending legs, a stem secured to said valve and extending through said cap, adjustable rods secured to said casing, yokes connectin said rods to the narrowest portion of said e lipse, a valved vent formed upon said expansible tubing, and means Jfor adjustably securing said stem to said expansible tubing.

3. In a mechanism of the class described, the combination of' a base member, inner and outer tubular members secured to said base member, a valve-casing secured to said base member, a movable valve positioned within said casing, an elliptical, expansible member secured to said. base member, and means connecting said expansible member to said valve.

4. In a mechanism of the class described, the combination of a base member, an inner and an outer apertured tubing secured. to said base member, an elliptical exp ansible member secured to said base member, a valve-casing, a movable valve mounted therein, means connecting said valve with said expansible tubing,and means connecting said expansible tubing to opposite portions of said valve-casing.

5. In a mechanism ol the class described, the combination with a boiler, of a base element secured to said boiler, means depending from said base element to the water-surface in said boiler, elliptical, expansible means secured to said base element, and valve means assembled .with said base element and connected to said expansible means.

6. In a mechanism of the class described, the combination with a boiler, of a base element, depending, hollow members secured to said base element, an expansible member secured to said base element, a valvecasing secured to said base element, avalve mounted within said casing, adjustable means connecting said valve and expansible member, and laterally-extending means connecting said valvecasing and said expansible member.

7. In a mechanism of the class described, the combination with a boiler, of a base element removably positioned upon said boiler, a removable, inner tubing secured to said base element and extending downwardly in said boiler, an outer, a'pertured, removable tubing secured to said base element and extending downwardly in said boiler, said outer tubing of greater length than the inner tubing, a removable, expansible member secured to said base element, a valve, and adjustable means connecting said valve and expansible member.

8. In a mechanism of the class described, the combination with a boiler, of a single, looped expansible member carried by said boiler, an inner and an outer member carried by said boiler, one of said members in communication with said expansible member, said inner and outer members extending downward into the boiler, and valve means assembled with said expansible member.

9. In a mechanism of the class described, the combination with a boiler, ol hollowmembers of different dimensions extending downwardly in said boiler, expansible means secured in a communicating position with said hollow members and carried by said boiler, a vent-valve secured to said expansible means, and valve means adjustably secured to said expansible means.

10. In a mechanism of the class described, the combination with a boiler, of hollowmembers extending into said boiler, one of said members provided with apertures, valve means, and means connected to said members and valve means Jfor actuating said valve means.

11. In a mechanism of the class described, the combination with a boiler, of an inner and outer hollow member carried by said boiler, said outer member provided with an aperture, and valve-actuating means carried by said hollow members.

12. In a mechanism of the class described, the combination with a boiler, of members ol different lengths extending into said boiler, and valve-actuating means connected with said members.

13. In a mechanism of the class described, the combination with a boiler, of removable members of different lengths positioned within said boiler, and valve-actuating means connected with saidmembers.

14. In a mechanism of the class described, the combination with a boiler, of expansible means carried by said boiler, valve means co-y acting with said expansible means, and members, one inclosingthe other, positioned within said boiler and extending to the water-column for permitting of the actuation ol said expansible means when the water in the boiler has fallen below a predetermined level.

15. In a mechanism ofthe class described, the combination of a base element, a single looped, expansible member secured to said base element, valve means coacting with said member, and an inner and an outer member secured to said base element.

16. In a mechanism ol the class described, the combination with a base element, of in- IOO IIO

ner and outer members of different lengths G. WARD KEMP,

C. C. PHILLIrs.

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