US474795A - Steam boileb and generating - Google Patents

Description

(No Model.) 3 Sheets-I-Sheet 1.

E. HORTON & P. E'. PITCH. STEAM BOILER AND GENERATING APPLIANCE.

No. 474,795. v Patented May 10, 1 92.

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3Sheets-8heet 2. E. HORTON 81F. E. FITCH. STEAM BOILER AND GENERATING APPLIANGEJ N0. 474,795; Patented May 10, 1892;

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v E. HORTON & F. E. FITCH. STEAM BOILER AND GENERATING APPLIANGE.

Patented May 10,1892.

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EMMET HORTON, OF DUNDEE, AND FRANCIS E. FITCLLOF ELMIRA, NEWV YORK; SAID HORTON ASSIGNOR TO SAID FITCH.

STEAM BOILER AND GENERATING APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 474,795, dated May 10, 1892.

.. Application filed June 4, 1891. Serial No. 395,052. (No model.)

To all whom it may concern:

Be it known that we, EMMET HORTON, residing at Dundee, in the county of Yates and State of New York, and FRANCIS E. FITOH,16- siding at Elmira, in the county of Chemung and State of New York, citizens of the United States, have unitedly invented certain new and useful Improvements in Steam-Boilers and Generating Appliances Thereto; 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, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Our invention relates to steam-generators and their relation to steam-boilers, and especially to the locomotive-boiler in which the water-chamber extends downward around the sides of the fire-box and is technically called a water-leg. In this special class of boilers, which we prefer to illustrate and wherein important advantages for our improvements are attained, the sediment formed by continued evaporation in generating the steam not only settles in the water-leg, but also in the opposite end or forward part of the boiler, as before mentioned by said Fitch in application filed November 26, 1890, Serial No. 372,734, as somewhat in the form indicated by the dotted line 11 3 Devices heretofore arranged to aid in generating steam and applicable for attachment to-boilers and to relieve said boilers of this sediment by either transverse or longitudinal circulation within the waterchamber of the boiler have not given the best effect possible or that should be obtained from the amount of heat produced, because such have not provided means to retain the circuit of their circulation within the highest temperature practicable. The water on leaving one end of the boiler and coming in contact with outward-lying pipes on a flying locomotive in a cold atmosphere necessarily falls to a lower temperature before it can enter the generating-pipes within the fire-chamber at the other end, where it must be raised to a certain temperature before expansion into steam again; also, such generators have been in a large measure impracticable in their application to a locomotive, because of their incompactness, mode of application, and system of outlying pipes, and the generating mechanism being inadequately supported in its connections Within the fire-chamber of the boiler.

The objects ofour improvements are to overcome these objections and toarrange a generator that may be more direct and less expensive in structure and to more perfectly meet the requirements essential in its application to the locomotive and all other boilers. We effect these objects in the following illustrations, in which similar letters of reference indicate corresponding parts.

Figure 1 is a longitudinal section through a steam-boiler and the fire-box, showing our improvements. Fig. 2 is an enlarged transverse section on line Z Z, Fig. 1. Fig. 3 is a longitudinal section through the parts shown in the preceding figure. Fig. 4 is an enlarged longitudinal section of the front end of the boiler. Fig. 5 is a transverse section. on line X X, Fig. 4. Fig. 6 is a transverse section through the fire-box of a boiler equipped with a modification of our device. Fig. 7 is a longitudinal section similar to Fig. 1, but showing said modified form.

A represents an ordinary locomotive or the parts thereof in section. Attached thereto is the part b, crossing the fire-chamber B in a manner expressly designed to support the generating mechanism and itself receive firm support in the side walls thereof by having its ends passing upon tubular pipes 01 d, lying within a casing c, which passes through and is expanded into the walls of the water-leg. Said part 1), being made hollow, forming the chamber 19* therein and having the feed-pipes leading thereto and departing therefrom, may properly be termed the main generatinghead. Inclining upward and directly connecting said head with the crown-sheet t of the fire-chamber is one or more generatingpipes e, as may be desired, that gives circulation from the head upward into the waterchambcr of the boiler.

The rear end of the supply-pipe S is connected with the top of the main generatinghead I) and turns upwardly and enters the boiler through the flue-sheet T, while its forward end passes to the front end of the boiler, near the lower inner side of the barrel thereof and parallel therewith. Near its forward end the pipe S is provided with an under recessed feed opening or mouth ,m, supplying circulation to the generator I). In this form of our invention the mud drum or receiver and a sediment-separator are located at or near the forward end of the supply-pipe. For compactness and convenience of application an opening 0 is made upward through the under forward part of the boiler and forms the throat of the mud-receiver i, which is in the form of a circular cup having reverselycurved walls, and an upper external rim P titted to the curv of the boiler and clamped thereto water-tight around said opening 0 from the water-chamber of the boiler. A tubular opening at from the bottom of said receiver is provided with a screw-cap g, which may be convenient in removal to clean the receiver of sediment by pressure of water or steam flow from the boiler therethrough. Secured to the supply-pipe S directly over said opening 0 to the receiver is arranged a separator, which-causes the current of water to flow inward over said opening, thence suddenly up and outward again before entering the mouth m of the supply-pipe 3, thus causing the sediment which collects within the boiler by continued evaporation to precipitate through the opening into the mud drum or receiver therefor.

R represents the external shell or casing to said separator, suspending from the supplypipe its lower extremity, of bell-form, above which, lying across it, emerges a part-circular configuration, incasing the supply-pipe at its mouth m, communicating therewith. An internal projecting rim a, secured to the lower edge of the casing R, forms a fiat ring thereon. The central opening 1; through this ring to the chamber w of the separator is a trifle smaller than the opening or throat 0 of the sediment receiver directly beneath it. A thin concave disk a, of a trifle larger diameter than the mouth or opening n of the ring, is suspended inverted over it within the chamber 10 and receives support in such suspension by small arms I), branching from it out to the inner walls of said chamber. Said disk lying in a little higher plane than the ring, a fountain or current channelis formed around about between them, and the disk acts as a bar to the sediment following the reciprocating water-current thus instituted and indicated by the crooked arrows m.

In some cases where boilers consume exceedingly-dirty water it may be desirable to open further communication from the main head 5 to the water-leg. We therefore make provision for attachment to the head at the point 6 Fig. l.

y indicates a plug for closing the pipe-opening 3 at the end of the generator-head 1), whereby pipe connection 0 maybe had with the latter from the outside of the boiler when the plug is removed.

In the modification, Figs. 6 and 7,1s shown below the generating-head I) what may be termed a T-and-Y union or coupling, constituting a sediment-separator, that is connected to the head b by means of short feedpipes g g. WVith this separator the rear end of the supply-pipe S is connected, and the latter has at its front end the opening m; but the mud-drum and sediment-separator of Figs. 1, 4, and 5 are dispensed with. Communicating with the chamber L, withln the separator H from below, is a still-waterreservoir or mud-drum i. The short pipe J, passing through the fire-grate K, facilitates this connection, the drum being supported from beneath the boiler. The position of the muddrum in this modification requires that the separator H must be provided, having themternal chamber L, with upward-branching channels from within, which separates the current in its upward course to the generating-head b and retards or stills the flow, allowing the precipitation of sediment to the chamber of the mud-drum beneath.

The plug a closes the end of pipe S, but can be removed to allow cleaning the latter out.

Having thus fully described the construction and operation of our improvements, what we claim, and wish to secure by Letters Patent of the United States, is

1. The improved steam-generator herein described, in which are combined a boiler havlng a water-leg, a transverse generating-head arranged within the fire-chamberand connecting the side walls thereof, one or more generatingpipes connecting said head and crown-sheet, one or more supply-pipes leading to said head, and a separator con nected to said supply pipe or pipes, substantially as described.

2. The improved steam-generator combining therein a generating-head connecting the side walls of the boiler and a supply-pipe leading from said head through the flue-sheet to the front of the boiler, and one or more generating-pipes leading from said head to the crown-sheet of the fire-chamber, substantially as described.

3. A sediment-separator, in combination with steam-generating appliances providing for upward-reciprocating water-currents, and a supply-pipe extending from the sedimentseparator within the boiler to the generatorhead and to which the water-currents lead, substantially as described.

4. In generating appliances for steam-boilers, a supply-pipe located within the barrel of the boiler and parallel therewith, the rear end of said pipe passing through the flue-sheet and connecting the water-chamber with the chamber of the generating-head, substantially as described.

5. In generating appliances for steam-boilers, the combination, with the boiler having an opening through the barrelsheet thereof to the water-chamber, of the supplypipe Within the barrels of the mud-receiver, attached to the boiler over said opening, said supply-pipe having an opening opposite said barrel-opening, substantially as described.

6. In steam generating appliances and boilers, the combination of the supply-pipe S and a separator located Within the chamber of the boiler and connected to said pipe, and a mudreceiver connected to the chamber of the boiler, substantially as described.

7. The combination, with the supply-pipe having the month m, of the separator connected thereon and the concave disk connected therein Within the boiler-chamber, substantially as described.

8. A sedimen t-separator provided with a deflecting-disk, a supply-pipe connecting the separator with a generating-head, said disk causing upward-reciprocating Water-currents Witnesses:

A. S. FITCH, O. M. SMITH.

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