US337524A - schbeiber - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1. J. SGHREIBER.

FLASHVER. No. 337,524. Patented Mar. 9, 1886.

(No Model.) 3 SheetsSheet 3. J. SGHBEIBER.

. PLASHER.

- No. 337,524. I PatentqdMaJr. 9, 1886.

FIG. 3.

nmmm mmmm N. PETERS, Fh'fllo-Ulhngnphar Walhingiwu D. C.

' NtTED STATES.

PATENT anion.

JOSEF SCHREIBER, OF VIENNA, AUSTRIA-HUNGARY.

F'LASHER.

iiPECIPICAI'IGN forming part of Letters Patent N0. 337,524, dated March 9, 1886. Application filed December 16, 1885. Serial No. 185,835. No model.)

T0 at whom it may concern:

Be it known that I, JosEF SOHREIBER, of the city of Vienna, in the Empire of Austria- Hnngary, haveinvented certain new and useful Improvements in Feeding Boilers with a Oombination of \Vater in the Form of Fine Spray and Compressed Air, and of which I declare the following to be a specification.

My invention relates to improvements in feeding boilers with water-spray and compressed air, the boiler being fed with compressed air and water in finely-divided form in such manner that the water is converted into spray by the compressed air in being forced into the boiler, where the water-spray is immediately converted into steam. The motive power consists,consequently,of a mixture of steam and air. The apparatus in which this mixture of air and steam is produced consists, principally, of a water-reservoir for feeding the boiler with water and an exterior mantle or casing arranged in suitable position above the water-reservoir. This said mantle or casing is provided with a suitable furnace, and contains the steam-boiler, which latter is subdivided into the steam-generating space and the superheating space or compartment. separated from each other by a suitable horizontal partition provided with appropriatevalves for opening up the'communication be} tween the two said spaces or compartments. The superheater is provided with safety-valve, manometer, and steam-delivery pipe, while the mantle or casing is provided with an outlet for the products of combustiomwhich circulate around the boiler and within the eX- terior mantle or casing, communicate their heat to the boiler and superheater surface, and finally escape through the aforenamed outlet to the chimney, A small steam-engine of suitable construction is mounted on a suitable bracket fixed to the mantle or casing,and sets a shaft in rotation by means of an appropriate crank, which said shaft has its bearings in two standards fixed to the base-plate above the water-receptacle. The shaft carries the fly-wheel, strap -'drum, and two ee- These two spaces or compartments are or connected to the water pipe of the waterpump, and is thus brought into 'c0mmunica1 tion with the generating-space of the boiler.

In order to be able to vary the quantity of air and water fed to the boiler, the eccentrics can be so constructed that the same can be readily adjusted.

Figure l is a vertical sect-ion of my im-' proved apparatus on the line as y in Fig. 3, with the water-pump in section. Fig. 2 is a vertical section of the same figure on the line as y. Fig. 3 is a plan or top view of my improved apparatus. Fig. 4 is an elevation of the adjustable eccentric. Fig. 5 is an elevation of the sleeve or muff; and Fig. 6 an elevation of the eccentric.

The base-plate D is mounted on the water reservoir D, and carries the mantle or casing A. The mantle or casing A is lined with refractory material, and is provided with the furnace-grate B, and also a suitable outlet, 0,

for the spent products of combustion to the chimney. A number of brackets, B, are arranged above the fire-proot" or refractory lining, and serve to carry the steam-generator A which is separated from the superheater A b a horizontal artition E, nrovidedwith' crank-shaft G has its bearings in the standards I N O, carries the fly-wheel P, the fixed and loose strap-drums Q Q", two eccentrics, H H,

and the eccentric l of the regulating-slide of the steam-engine. The eccentric H actuates the piston of the water-pump F, arranged in the water-reservoir in such manner that the suction-tube E will reach into the water in the said reservoir. The pump is provided with valves in known manner,is extended beyond or above the base-plate D, and carries laterally,

near its upper end, apipe or tube,f,which communicates with the short tube f. The eccentric H serves to actuate the pump I, mounted on the cover to the waterreservoir D, and carrying a pipe or tube, g, which is connected to the short pipe or tube f. This said short pipe or tubef is securely fixed to the mantle or casing A, and leads into a pipe or tube, r, arranged in the steam-generator.

The water and air pumps can be single or double acting.

The adjustable eccentric is constructed as follows: The sleeve or muff Z or n 0 is keyed to the shaft G, the extension of wl1ich,p q r s, is of square form. An oblong opening, tuaw, is formed in the eccentric H in such manner that the shorter sides, t a and o w, are of like size with the square extension to the sleeve or inuii'l m a 0, which fits exactly into the opeuing of the said eccentric, and can reciprocate in the same. The eccentric is fixed to the sleeve or mufi' by means of the disk or collar P and screws or bolts on (1, whereas the position of the same can be regulated by means of the screwsS T U, which are guided in small bearings in the eccentric H, so that they can operate on the said sleeve or muff. he eccentric is provided with appropriate graduations, R, which denote the atmospheric pressure'under which it is desired to work, and which correspond with the position of the eccentric.

The operation of the motor with the simultaneously-operating air and water pumps is as follows: By each revolution of the shaft G a quantity of air and water corresponding to the diameter and stroke of the pistons of the pumps is forced through the two tubes or pipesf g, which are connected to the short tube or pipe f, and through the pipe r into the steam-generator A in such manner that the water is converted into fine spray by the compressed air simultaneously injected. This water spray is rapidly converted into steam, the action of which is augmented by the expansion of the compressed air injected with the feed-water. This admixture of steam and air passes through the valves 12 into the superheater A, and from thence through the tube or pipe Z to the machine M, for driving the same.

In gas-motors the greatestefi'ect is obtained by a mixture of gas and air, and a like excellent eii'ect can be obtained in steam-engines by employing a mixture of steam and air. If, by means of suitabieexperiments,themostiavorable proportions of air and water have been ascertained and the diameter of the pistons of the air and water pumps determined, the eccentrics are fixed so that at each stroke of the pistons one and the same quantity of air and water will be continuously pumped into the steam-generator. If it is desired to increase the pressure in ordinary steam-boilers, it is only necessary to use a stronger fire, as the water to be converted into steam is contained in the boiler; but as in the steam generator described above no more water can be converted into steam or air be expanded than is forced into the generator at each stroke of the pumps, and this quantity of water and air by continuous working cannot produce more steam-air than is injected by the next stroke, a stronger firing alone will not suffice to produce a greater pressure in the boiler or generator, but can only have effect when a large quantity of water and air is injected into thesaidstcam-gcnerator. If the pressure is to be reduced, the quantity of water and air fed to the generator must be decreased; but both of these operations can only be carried into effect by making thestroke of the pumps adjustable. As, however, for small generators two and for larger generators four pumpstwo water and two air pumps are mounted on the same shaft, the customary mode of regulating the stroke-by means of an adjustable disk at the end of the shaft-cannot be employed, and the adj ustable eccentric therefore becomes an absolutely necessary requisite for this kind of feed.

The position which the eccentric must occupy in order to attain a maximum pressure in the generator, which said pressure cannot be exceeded by the most excessive firing, can be ascertained by a few experiments, the results of which are marked in atmospheres on the graduated scale R. If, for instance, the engine is to be driven with a pressure not exceeding four atmospheres, the eccentric is adjusted to No. 4 of the graduations, and if the firing is not too weak a pressure will be attained which will constantly remain at a little under four atmospheres. For small motors, where a variable pressure during the working is desirable, ordinary fixed eccentrics can be employed. The cylinders of the pumps are of medium size, and the suctioirpipe of the water-pump rendered adjustable by means ofa screw, so that the inlet can be diminished or increased in area, and the pump force up more or less water, so that the pressure in the generator can be increased as may be desirable. The regulating-screw is provided with a pointer, Z, which moves over asuitably-graduated scale corresponding, by previouslyunade experiments, with the desired number of atmospheres. As hereby the quantity of air and water remains constant, the desired proportions of the mixture of steam and air will not always be the most eifective, but, however, suflicient for small motors.

It will be evident from the foregoing specification that my improved method of feeding boilers with an admixture of compressed air and water in spray form can be applied to boilers of almost any construction, form, or size, whether horizontal or vertical, and that the water-reservoir, and also the water and air pumps, can be placed in any desired position, either above, below, or laterally to the said boiler. I

Although I have for clearness sake shown the application of my said invention to small motors, I desire it to be understood that I by no means confine myself to the special application to such said. small'motors, as my said invention can be applied with like advantage to boilers of all sizes and systems.

Having now particularly described and ascertained the nature of my invention, what I claim is- 1. The combination of the adj ustableeccentries for regulating the stroke of the piston or connecting-rods by means of the four-cornered or square partp q 1 s of the muff or sleeve Zm n 0 with the oblong opening in '0 win the eccentrics H or H, which said four-cornered or square partp q r s of the muff or sleeve Z m n 0 can be adjusted in the oblong opening tum w in the eccentrics H or H by means of the screws or screw-bolts S TU, substantiallyas described in the foregoing specification and shown in the accompanying drawings.

2. The combination of the sleeve or muffl m n 0 and the square extension 1) q r s to the same with the collar or disk P, the crank-shaft G, and the eccentric H or H, substantially as described in the foregoing specification and shown in the accompanying drawings.

3. In a feeding device for steam boilers or generators, the combination of the water-pump F and water-reservoir D with the air-pump I and the adjustable eccentrics H and H, substantially as and for the purpose set forth in the foregoing specification and shown in the accompanying drawings.

4. The combination of the eccentrics H and H, and the water and air pumps F I, and the graduations R, substantially as and for the purpose set forth in the foregoing specification and shown in the accompanying drawings.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

J OSEF SOHREIBER.

Witnesses:

EDMUND J USSEN,

F. H. MOLDENSAUER.

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