US296427A - Feed-water heater - Google Patents

Description

llNiTnn STATES PATENT @einen PATRCK MCGVERX AND VILLAM E. FRYE, OE CRES'lLlNlh OHIO.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 296,427, dated April 8, 1884.-.

Application filed October '27, 1883. (No model.)

To @ZZ 'whom t may concern:

'Be it known that We, Partner; MoGrvnnn and WILLIAM E. Fern, both of Crestline, in the county of Crawford and State of Ohio, have invented a nevir and 'improved Feed-Tater Heater, of which the following is a full, clear, and exact description.

Our invention consists of a detachablysupported Water table or heaterlocated in the firebozr of a locomotive or other boiler, with feed- Water and delivery pipe connections for heat ing the feec'l-n'ater before entering the boiler proper, the said heater being supported by the the pipe-connections and by connection with the side sheets of the furnace, so as to be readily taken out Vfor repairs; and the pipe-connections haring outside joints back of the fireboX, under the boiler, Where the joints can be connected or disconnected at will; and the deliverypipes are extended into the boiler and made to discharge at points Where currents of VWater are set in motion by the inflowiug jets,

which act lon the fines to protect them from deposits of scale; and the heater is arranged with relation to the air-inlets of the door suitably for promoting such combustion of the gasesrising from the firebed as will prevent the discharge of smoke, all as hereinafter fully described. y

Reference .is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the iigures.

Figure l is a longitudinal sectional elevation of a locomotiveboiler p-rovided with a feedwaterhcater contrived in accordance with our invention. Fig. 2 is a transverse section taken on the line a: .t of Fig. l, and Fig. 3 is a plan vieiv -of the water-table forming the feedwater heater.

A represents the water table orheater, which We arrange in the fire-boi: Z1, as shown in Fig. l--that is, in an inclined positionrising from the baclr ofthe fire-box, below the tube-sheet, upward toward the front about as high as the middle of the fire-door c, but terminating sufficiently short of it to allow suitable space for the gases to pass up in front of the fire-door, to receive sufficient fresh oxygen through the air-passages thereof for complete combustion,

or nearly so, the said heater extending nearly from side to side of the lire-box b, and being dctachably secured thereto bythe brackets d, attached to the side sheets, and the clips c, attached to the heater, so as to have suitable support,with freedom to expand and contract independently of the said side sheets.

At the back and lower edge of the lheater it has three pipe-connections, fg 71, which join With pipes extending through the fire-box b to the extcrionwhere the middle pipe, f, connects with an outside section, fi., ofthe feed-Water pipe, and the other two pipes, g 7i, join with other outside pipes, j j, which enter the boiler, and terminate at L' and Z, respectively, for delivering the feed-water at it from the heater c at the Water-level, or thereabout, and above the tubes, and so that the Water will dow along the tubes and return to the heater from the point l, which is much lower, and in the for- .Ward and colder part of the boiler, when the pump or injector is not Working, whereby a circulation will be established through the heater, and it will be lie-pt full of Water for its protection and for more effectually heating the Water than if the heater discharged into the boiler through one pipe only, in which case the Water in the heater might be wholly converted into steam, so that the plates would be injured more by the fire. The current along the tubes from 7s to Z tends to keep the tubes clean. The feed-Water pipe terminates at the opening into the heater, and also the delivery-pipe j that terminates at Z; butthe other deliverynpipe j extends up therein to the npper part, as shown at m, to receive the hottest water,which rises thereto and convey it therefrom into the boiler.

. The feed-Water pipe i connects with an in side section, n, by a goose-neck, o, and the section nextendalin this example, to the muddruni p, near Where the checlrvalve ai is located in some forms of engines; but We do not limit ourselves to any particular location of the check-valve, nor to the arrangement of the` inside section, a, of the feed-pipe. The delivery-pipes j j also connect with their inside sections by suitable goose-neck devices, Fig. 2, which may also be varied at will; but we consider it an essential part of our invention IOO . the pipes can be readily disconnected at any time for the removal of the heater. These joints g may be constructed in any of the wellknown ways for being disconnected, as by' union-joints at s, or otherwise. XVe propose to construct 'the heater a by bending over a boiler-plate in the form represented in crosssection in Fig. l, riveting the ends together, stay-bolting the two wide sides through from one to the other, and riveting iianged plates in the ends, with the flanges turned outward, so that the joints will not be much exposed to the hot fire and will be very lasting.

The heater will have plugs in the ends,to be removed for access to clean the heater when required.

Having thus described our invention, what we claim as new, and desire to secure by Letv ters Patent, is-

l. The water-table feed-water heater arranged in the iire-box,and removably secured to the sides thereof by brackets and clips,

and supported at its lower end by detachable 2. The feed-'water pipe connected to the water-heater a by an outside section, t', connecting with an inside section, a, and connecting` with the heater through the iire-box side and with a detachable joint, substantially as described.

3. The delivery-pipes j j, connected to the water-heater a through the ire-box side, and by detachable-joints, and having inside eX- tensions discharging the water at or about the water-level, and below it, and at opposite ends of the tube-section of the boiler, substantially as described. f

4. In a feed-water heater for locomotiveboilers,located in the lire-box, two deliveringpipes extendingtherefrom into the tube-section of the boiler by outside connections through the fire-box and the bottom of the boiler, one of said pipes extending in the heater to the upper portion of the same and discharging at or about the water-level at the rear ends of the tubes, and the other pipe opening into the lower part of the heater and discharging at a lower point in the boiler, near the front end of the tubes, to cause circulation of Water in the heater when the pump is n'ot working, substantially as described.

PATRICK MCGIVERN. VILLIAM E. FRYE. Vitnesses: v

DAN Bansr, Jr., W. STAI-ILE.

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