US1173475A - Means for regulating the water-supply of boilers. - Google Patents

Description

L. C. ANDERSON.

MEANS FOR REGULATING THE WATER SUPPLY OF BOILERS.

APPLICATION FILED APR. 19. 1913.

1,173,475. e Patented Feb.29, 1916.

2 SHEETS-SHEET I- WITNESSES l/VVENTOR W Y "I Allornzy L. C. ANDERSON. MEANS FOR REGULATING THE WATER SUPPLY OF BOILERS. APPLICATION FILED APR. 19, 1913.

1,173,475. Patented Feb. 29, 1916.

2 SHEETS-SHEET 2- INVENTOR Altorm y WITNESSES III/14,111

LEWIS C. ANDERSON, OF EHRLICH, WASHINGTON.

MEANS FOR BEGULATING 'IHE WATER-SUPPLY OF BOILERS.

To all whom it may concern Be it known that I, LEWIS C. ANDERSON, citizen of the United States, residing at Ehrlich, in the county of Skagit and State of Washington, have invented certain new and useful Improvements in Means for Regulating the Water-Supply of Boilers, of which the following is a specification.

This invention relates to means for regulating the water supply of various types of boilers and the primary object of the invention resides in the provision of automatic means arranged exteriorly of the boiler whereby the water supply is automatically replenished or turned on, should the contents of the boiler become abnormally low.

A further object of the invention contemplates the provision of means for automatically regulating the boiler water supply, wherein steam pressure is utilized, under certain conditions, to operate suitable valve mechanism arranged within the water supply pipe, this construction and arrangement automatically replenishing the boiler water supply as the original contents thereof are withdrawn or used for various purposes.

The invention still further resides in the provision of simple means including a specially devised steam operated supply pipe valve, the operation of the said valve being controlled by means of a suitable reservoir arranged in a novel and peculiar manner upon the exterior of the boiler.

The above and .additional objects are accomplished by such means as are illustrated in their preferred embodiment in the accompanying drawings, described in the following specification and then -more' particularly pointed out in the claims which are appended hereto and form a part of this application.

In describing my invention in detail reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is an elevation of a boiler, partly broken away with the regulating means comprising my invention, attached thereto; Fig. 2 is an enlarged elevation, a portion being shown in section, of the reservoir and its weighted arm; Fig. 3 is an enlarged longitudinal sectional view of the supply pipe valve, part of the valve casing being shown in elevation; Fig. 4 is an enlarged section on line 4-4 of Fig. 2. v

Specification of Letters Patent.

Patented Feb. 29, 1916.

Application filed April 19, 1913. Serial No. 762,405.

Referring now more particularly to the drawings, wherein is illustrated the preferred form of my invention the numeral 1 deslgnates a boiler of the original type upon the exterior of which is arranged the apparatus or mechanism comprising my invention. A suitable reservoir 2, preferably substantially triangular in outline, is fulcrumed at a point upon the exterior of the boller approximately upon the same plane or level as the normal water line of the boiler, the converged end of the said reservoir being fulcrumed or pivoted by means of a pipe 3 leading into the boiler. The sald pipe 3 is secured to a reservoir pipe 4 so as to allow the said reservoir pipe with the reservoir 2 attached thereto to swing or rotate as upon a pivot, the connection between the said two pipes 3 .and 4 being accomplished through the medium of a packing nut 5 fitting over annular flanges 6 and 7 respectively formed integrally .with and upon the extremities of the said pipes 3 and 4. An opening 8 is formed within the pipe 4 upon theiinterior of the reservoir 2 thereby efi'ecting'communication between the said pipe 4 and the reservoir. By extending the pipe 4 through the reservoir 2 and securing its outer end in a water tight manner by means of a packing nut 9, to the outer face of the reservoir a more substantial support for the latter is obtained.

Fixedly secured to the exterior of the reservoir at the converged end thereof, adjacent the pivotal point of the said reservoir, I provide an arm 10, the said arm extending at a slight angle from the said reservoir as is clearly shown in Fig. 2 of the drawings, and having adjustably mounted thereupon a suitable weight 11 which is retained in adjusted position by means of a thumb screw 12;

A steam inlet pi e 13 leading into the reservoir is provide the said pipe extending from the boiler 1 above the normal water line thereof into the reservoir water supply pipe 3 through which it extends concentrically as is shown in Fig. 4 to a point 14 where it is bent or curved so as to extend into the reservoir along the inner upper face thereof and terminating, as indicated by the dotted lines in Fig. 2 near the upper diverged end of the said reservoir. A swivel. pipe connection is provided for the said pipe 13 as at 15 to allow the reservoir portion of the said pipe to swing according to the swivel connection being preferably the reservoir, the said disposed the said 10 by 17 is a pivotal movement of adjacent the connection between pipes 3 and 4. Adju'stably secured to the arm means of a collar 16 and thumb nut depending rod 18, the said rod being pivotally secured to the collar 16' as at 19 and connected to a second rod 20 by means of a suitable clamp 21 arranged over the said two rods 18 and 20 near, the lower end of the former. The rod 20 is in turn'pivot'ally con nected as at 22 to the extended portion of a valve stem 23, the said stem extending transversely through a suitable valve casing 24, supported in a manner to be hereinafter fully described upon the exterior of the casing. A valve seat casing 25 is threaded into the casing 24, the said casing having an inlet passage 26 formedtherein into which a steam pipe 27 extends, the said pipe 27 being adapted to convey steam from the interior of the boiler above the water line thereof into the valve casing 24. A valve head 28 is formed upon the stem 23 for normally closing the inlet passage 26 of the casing 25 thereby preventing the entrance of steam into the interior of the casing 24. A

second valve head 29 similar in construction to the head 28 is lower extremity of the head being normally held with a suitable exhaust threaded into the casing 24 diametrically opposite to the casing 25. The said casing 24 is threaded into a suitable cap 31, which arranged near the stem 23, the said out of engagement valve casing 30 is in turn supported by means of an extensupply pipe valve.

SlOIl 32 of a water supply pipe valve casing 33, the said extension being threaded into the cap 31 for effecting a secure connection therebetween. A partition 34 is formed integrally with the extension 32, extending across the interior thereof for closing com- 'munication betweenthe casing 24 and the supply pipe casing 33 but allowing a suitable piston rod 35 to extend therethrough, one end of the said rod 35 having a piston 36 secured thereto, which piston is operated by the steam pressure supplied through the mediumof the plpe 27. The opposite end of the rod 35 carries a valve head 37 which is normally held in engagement with a suitable partition 38 by means of a spring 39 arranged over an extension of the rod 35 between one face of the head 37 and a packing nut 40 threaded pon the casing 33 of the main water supply pipe 41 leading from a suitable source of water supply into an injector 42 is [provided exteriorly of the boiler, from whlch point a supply pipe 43 through which it passes, when the valve is open, into a pipe 44 where it is free to enter the interior of the boiler near the top therethe water-contents of the mechanism is actuated by th valve casing 33,,

of, if desired. A by-pipe 45 may be provided for connecting the pipe 43 to the pipe 44 thereby allowing the supply of water to enter the boiler without passing through or being controlled by the valve arranged within the casing 33. Any number of valve cocks 46 may be arranged at various points upon the different pipes employed in connection with the inventionfor controlling the water supply as occasion demands.

Having described fully the detail construction of the device, the operation thereof will now be set forth. The water within the reservoir 2 is normally upon the same level as the water within the boiler 1 and is adapted to rise and fall according to the condition of the water within the'said boiler. Should the water within the boiler be withdrawn,

reservoir 2 is like- When diminished sufiiwise dimlnished.

ciently the weight 11 will cause the said re- A servoir to swing upon its fulcrum or pivotal connection which operation will cause the arm 10 to fall and will in turn operate the valve stem 23 and valves 28 and 29 of the casing, such operation being effected by means of the rods 18 and 20. By depressing the stem 23 the valve 28 is withdrawn from engagement with the valve seat of the casing 25 whereupon the steam is admitted from the pipe 27 intothe interior of the casing 24. By opening the valve 28, the exhaust valve 29 is automatically closed thereby causing the steam pressure of the casing.

24 to operate the piston head 36 which in turn will disengage-the valve head 37 from the valve seat formed within the partition 38 of the valve casing 33. When the said head 37 is out of engagement with the valve seat as above described a communication is opened between the pipe 43 and the pipe 44 thereby allowing the water to pass from one to the other and into. the boiler at the top thereof where it will continue to pass until the water within the boiler has again reached its normal level. After reaching the normal level, a reverse action of the valve operating e water supply of the reservoir 2 from which it will be seen that the water supply of the boiler is automatically regulated in the desired manner. Bfy }t1he provision of the steam inlet pipe 13 o t steam to that contained within the boiler is admitted to the reservoir thus insuring a uniform level of water for both the reservoir and. boiler.

In reduction to practice, the form of my invention,

adoption of my device w1ll necessarily vary,

I desire to emphasize the fact that varioul e reservoir a proportionate amount of minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of my invention, as defined in the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by LettersPatent, is

1. In a means for automatically regulating the water supply of boilers, a boiler supply pipe through which water is forced under pressure, a valve casing open to said pipe, a valve seat within said casing a spring actuated valve normally engaging said seat, a valve stem projecting exteriorly of the casing, a cylinder detachably secured to the valve casing, the valve stem extending into said cylinder, a piston rigid with the Valve stem, said piston being movable within the cylinder to actuate said valve against tension of its associated spring, valve seats formed at diametrically opposite points relatively to the cylinder, a steam supply pipe open to said cylinder, valves movable into and out of engagement with the respective valve seats, a valve rod supporting the mentioned valves, one of said valves controlling the steam supply to the mentioned cylinder and the other of the said valves controlling the steam exhaust from said cylinder, and means actuatable by the rise and fall of the water within said boiler to control movement of the mentioned rod.

2. In a means for automatically regulating the water supply of boilers, a boiler supply pipe through -which water is forced under pressure, valve means 0 erable within said supply pipe, a piston or operating said valve means, a cylinder within which the piston is arranged, a valve operating rod extending into said cylinder, a steam supply pipe open to the cylinder, a .valve carried by said rod and normally closing communication between the steam supply pipe and the cylinder, a valve seat for the valve, a second valve seat within the cylinder at a pointdiametrically opposite to the valve seat aforesaid, a second'valve mounted on said operating rod, said second valve being normally out of engagement ond seat, and means actuatable according to the rise and fall of the water within the boiler to control movement of said valve operating rod and move said first valve member out of engagement with its seat, to provide for actuation of the piston by steam pressure exerted thereon, and movement of the second valve into engagement with its seat to prevent the escape of steam admitted go the cylinder, as and for the purpose set orth.

3. In a means for automatically regulating the water supply of boilers, a boiler supply pipe through which water is forced under pressure, a bodily movable reservoir open to the boiler interior, movement of said reservoir being controlled by the rise and fall of water in the boiler, a balance arm aflixed to the reservoir, a weight adjustable on the arm, a cylinder, a sectional valve operating rod adjustable longitudinally relatively to the arm, said rod extending into said cylinder, a steam supply pipe leading into the boiler and to the cylinder, a valve on said operating rod normally closing communication between the said steam pipe and the said cylinder, a seat for said valve member, a second valve seat within the cylinder, a valve upon said rod movable into and out of engagement with said second seat, said second mentioned valve being adaptedto move into engagement with the seat simultaneously with the movement of the said first mentioned valve out of engagement with the seat, a piston operable within the cylinder upon the admission of steam thereto, and valve means actuatable through movement of the piston to control the boiler water supply.

In testimony whereof I afilx my signature in presence of two witnesses.

LEWIS C. ANDERSON.

Witnesses:

C. J. HAMILTON, W. D. A'rwm.

with said sec-

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