US687287A - Feed-water regulator for marine boilers. - Google Patents

Description

3 Sheets-Sheet I.

Patented Nov. 26, l90l.

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J. THOMAS. I FEED WATER REGULATOR FOR MARINE BOILERS.

(Application'filed Aug. 10, 1900.)

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No. 687,287. Patented Nov. 26, I90l.

' J. THOMAS.

FEED WATER REGULATOR FOB MARINE BOILERS. [Application filed Aug. 10. 1900.) (No Model.) 3 Sheets-Sheet 2.

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No. 687,287. Patented Nov. 26, l90l.

J. THOMAS.

FEED WATER REGULATOR FOR MARINE BOILERS.

Appliation filed Aug. 0, 1900.)

(No Model.) 3 Sheets-Sheet 3.

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Uivrren erases Parents JOSHUA THOMAS, OF CLEVELAND, OHIO.

FEED=VVATER REGULATOR FOR MARINE BOILERS.

formingpart of Letters Patent No. 687,287, dated November 26, 1901. Application filed August 10, 1900. Serial No. 26,480. (No model.)

T0 at whom it may concern: I

Be it known that l, JOSHUA THOMAS, a citizen of the United States of America, and a residentof the cityof Cleveland, in the county of Ouyahogaand State of Ohio, have invented certain new. and useful Improvements in Feed-VVater Regulators for Marine Boilers, of which the following is a specification.

This invention relates to feed-Water regnlators and pumpgovernors for marine boilers; and it consists in the adaptation of my feed-water regulator and pump-governor (for which patents were granted to me as follows: No. 454,088, dated June 16,1891; No. 488,619, dated December 27, 1892, and No. 519,360, dated May 8, 1894) for stationary boilers of marine or moving boilers. For this purpose I reconstruct the apparatus substantially as hereinafter described, and illustrated in the accompanying drawings, in which- Sheet 1, Figure 1, is a front end elevation of a part of a marine boiler having my improved construction attached. Fig. 2 is a side elevation of the same. Sheet 2, Fig. 3, is a front elevation of part of two marine boilers, showing the manner of coupling up for feeding water to two or more boilers from one pump. Sheet 3, Fig. 4, is a top or plan view of Fig. 3. Fig. 5 is a plan view, partly in section, of the feed-water regulator detached and enlarged in scale. Fig. 6 is a plan view, partly in section, of the pump-governor detached and enlarged in scale.

A in the several views represents a portion of marine boilers. The feed-water regulator, one of which is attached to each of the boilers, consists of two copper or other quickly expansible and contractile metal pipes 13 O, which are joined at their ends bycross-heads D and E. These pipes are placed on a line with the desired water-level in the boilers, at a little inclination therewith, as seen in Fig. 2, the purpose of which is to allow the water to pass into and out of said pipes as the water lowers and rises in the boiler. The high ends of said pipes are connected by pipe F with the top of the boiler for the admission of steam, and their lower ends are connected by pipe G with a horizontal pipe G, located on a line parallel with the center line of the boiler, and entered through at its mid-length and thence turned inward the shell of the boiler the boiler, it also terminating at the exact center of the boiler, the purpose being to reach a point where there is the least change of position of the water in the boiler. This will serve to maintain the water-level in the pipes same'as in the boiler.

H is a regulating-valve controlled by the automatic action of the pipes B O. Itissnpported by the cross head I in the frame formed by the pipes B O and the cross-heads D E, near to one end. J is the valve-stem, passing through the cross-head I and extending to the opposite end of the frame and is connected to the cross-head D by means of a turnbuckle K. When the water lowers in passes out of the pipes B O and the steam enters them. This causes the I pipes to elongate, thereby opening the valve and allowing steam to pass to operate the pump, which ceases as soon as the pipes are again filled with water, causing said pipes to I again contract. This description applies to the arrangement of the device to a single boiler for regulating the admission of steam for the operations of the pump, the said regulatingvalve being in the steam-line from the boiler to the pump, as seen in Figs. 1 and 2.

In order to adapt the device for supplying water to two or more boilers from the one pump, I make a transposition of the regulating-valve from the steam-line to the line of pipes that convey water to the boilers from the pump as follows: P is a pump connected by a steam-line pipe P directly to the pump from one of the boilers. Q is a pipe leading from the pump to a pipe Q overhead for supplying all the boilers. Between steam-pipe P and the water-pipe Q is interposed my pump-governor O for regnlating'the valve V in the steam-pipe P to the pump. This governor was the subject ofmyPatent No. 519,360 of May 8, 1894. From the main water-supply pipe Q, branch pipes R R lead, respectively, to the boilers. Said pipes R R are connected by branch pipes S S with the regulating valves of their respective boilers. In the pipes R R are provided stop-cocks r r between the said branches S S, and the said branches S S are also provided with stopcocks s s, the purpose being to shut ofi the direct passage of water through said Ipipes R R and divert it through the said regulatin g-valves, and vice versa,when operation of this arrangement of the device is as follows: Should the water fall below the required level in a boiler, the water also vacates the pipes B O boiler and the steam takes its place. This causes said pipes to expand or elongate. This opens the valve in that regulator, so that water may be supplied to that boiler. Now as the water has lowered in said boiler the pressure of the water on the valve V in the governor O is also decreased. Then the pressure of the steam on valve E, aided by the spring S, will open said valve E and supply steam to operate the pump. By this means the pump is made to supply water to either of the boilers as occasion requires.

Having described my invention, what I claim is- 1. In a feed-water regulator for steam-boilers, the combination with the boiler and the regulator connected therewith, consisting of pipes 13 O connected at their ends, and supported on the outside of the boiler on a little inclination with the water-level in the boiler, their upper ends connected to the steam-dome, and a valve attached to and operated by the expansive and contractile functions of said pipes; of a horizontal pipe connected with the lower ends of said pipes B O, and on a line with the exact center of the boiler and desired. The

of the regulator on suchterminating inside of the boiler at the exact center midway of its length, arranged to operate substantially as described and for the purpose specified.

2. In a feed-water regulator for steam-boilers, the combination with the boiler and the regulator connected therewith, consisting of pipes B 0 connected at their ends, and supported on the outside of the boiler on a little inclination with the water-level in the boiler, the upper ends connected with the steamdome, and a valve attached to and operated by the expansive and contractile functions of said pipes; of a horizontal pipe connected with the lower ends of said pipes B O, and on a line with the exact center of the boiler and terminating inside of the boiler at the exact center midway of its length, and a pump, a governor connected between the steam and water discharge pipes of the pump, the discharge-pipe connected with the valve in the regulator, all arranged to operate substantially as described and for the purpose specified. V

Signed by me at Cleveland, Ohio, this 8th day of August, 1900.

JOSHUA THOMAS.

\Vitnesses:

GEO. W. TIBBITTS, CHARLES L. S'rocKER.

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