US369097A - Ferdinand brunbauer - Google Patents

Description

(Model.) y

F. BRUNBAUER.

INJECTOR.

No. 369,097.'- Patented Aug. so, 1887.

UNITED STATES PATENT EEicE.

FERDINAND BRUNBAUER, OF VIENNA, AUSTRIA-HUNGARY. j

I NJ E cTo R.

SPECIFICATION forming part of Letters Patent No. 369,097, dated August 30, 1887.

Application filed March QS), 1887. Serial No. 232,923. (Model.) Patented in Germany July 3, 1885, No. 36,938; in France'July 3, 1885, No. 169,922; in Belgium July 3, 1885, No. 69,475; in England July 3, 1885, No.8,098; in Austria-Hungary August 3, 1885, No. 19,027 and, No. 40,938; in Italy September 30, 1885, XIX, 18,629, and XXXVII, 153, and in Spain November 3, 1885, No.

To @ZZ whom it 'may cori/067%: l

Betknown thatI, FERDINAND BEUNBAUER, engineer, a subject of the Emperor of Austria- Hungary, residing atVienna, in the Province of Lower Austria, in the Empire of Austria- Hungary,have invented certain new and useful Improvementsinlnjectors; and Ido hereby declare the following to bea full, clear, and exact description of the invention,such as willenable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this'specication.

This invention relates to a new and useful improvement in injectors for feeding-boilers; and it consists in the peculiar arrangement and construction of the parts, ashereinafter described, and pointed ont in the claims.

The object of my invention is to construct an injector in such a manner that its starting and its internal parts are more simplified and its operation rendered more reliable. For this purpose the 'injector is provided with two steam-tubes, one of them concentrically inclosing the other, the outer one of which tubes (whose passage, in consequence of the said arrangement, is of annular section,iand which actsimmediately after the opening of the boiler steam-valve) operates the sucking in or setting in motion of the water, while by a subsequent adjustment of a starting-lever, or by other means, the movable inner tube is retired from a fixed conical valve, (until this moment closing the latten) whereby steam is permitted to also enter the inner or main steam-tube,

by which the pressure and the velocity of the water are increased snficiently to lift the check-valve of the boiler. In the second of the two stages of the starting of the injector a startingvalve or stop-cock (through which the initial waste of water escapes from the outer shell or casing of the instrument) is closed by a system of cranks and links connected either to the starting-lever or to other means for removing the inner tube.

To allow the two concentric steam-tubes to be operated in the aforesaid manner, I construct the inner or main steam-tube to be always movable in its axis for the purpose of retiring the same from the fixed conical valve, while the outer steam-tube may either be made fixed or be movable, in which latter case it ina-y be removed by the adjustment of the inner tube, or by any other means.

For the. reliable operation of this injector it is necessary to construct the injector and the starting valve or cock in such a manner that in starting the instrument the steam and water may partly escape from the overflow-chamber and partly from the discharge-chamber. I am aware that there are other constructions of injectors for this purpose; but I have found it necessary that this double escape of the jet of condensed steam and water should be completely separated from each other in one and the same starting-valve.

Injectors embodying my invention are represented in the annexed drawings, as follows:

Figure 1 is a sectional elevation of an injector having the movable central steam-tube, a iixed outer tube, and the starting-lever in combination with the starting-valve.- Fig. 2 represents in a similar elevation another construction of the starting-valve. Fig. 3 is a sectional elevation of an injector similar to that shown by Fig. 1, but having both steamtubes rigidly connected to each other. Fig. 4t is a sectional elevation of an injector, also similar to that shown in Fig. l, but exclusively arranged for upward action, and having its movable inner steam-tube adapted to belifted by steam-pressure. lied part of Fig. 4. v

yIn Fig. l the casing a of the injector communicates by its aperture a with the pipe conveying the bOilersteam, and its aperture communicating with the boiler contains a valve, f, kept closed by the boiler-pressure. The diaphragm between the steam-chamber a3 and the water-chamber a5 has the ixed outer steam-tube, b, rigidly inserted in a corresponding opening. In the axis of said tube b the main steam-tube c is endwise movable.

Fig. 5 represents a modirIhe central steanrtube, c, is guided at one g5 IOO k, forming at one end a conical face or valve, by which the stroke of the steam-tube c is limited, as the corresponding end of said tube c is ground out like avalve-seat and enabled to be tightly forced onto the aforementioned conical 'face k.

For adjustingthe main steam-tube c acrankpin, f', is provided, projecting from a short shaft, 1", which extends into the casing c through a stuffing-box. The crank-piaf engages with a guide, c3, formed on the steamtube c. On its outer end the shaftf carries a hand-leveigfl, and by means of a crank, f, and a connecting-mdd, said shaft is connected to a crank, g', rigidly fitted on the plug (jz of a starting-valve, which allows the exit of the water during the stage of drawing the water or setting it in motion. The casing g of said starting-valve is constructed in such a manner that during the starting ot' the injector a double completely separated escape of the mixture of condensed steam and water is provided. For this purpose the plug g, forming on its bottom end a conical valve, g3, is inserted in the top end of another valve, g, which valve is constructed like a tube with passage g, and forms a valve-seat, g, adapted to act in correspondence with valve g3.

The aforementioned conical valve g4 acts in correspondence with a conical valve-seat, f/l, of the starting-valve easing g, and forms with said casing another passage, g8, of ring-shaped section. In two diaphragms of the casing a are rigidly inserted the combining-tube with the delivery-tube j, made in one piece, though an open space for overiiow or relief is left between said tubes. During the starting of the injector the overflow-chamber a communicates with the passage ga of ring-shaped section, while the discharge-ehamber al is also in communication with passage gf. NVhen the hand-leverf2 is in the position shown by Fig. 1, the inner tube, c, is pressed against the conical face k, and the steam entering at a is only permitted to issue through the steamway of ring-shaped cross-section formed between the outer steam-tube, I), and the inner steamtube, c. In consequence thereof the drawing or the setting in motion of the water begins. The steam and water then enter the combining-tube i, formed integral with the deliverytube j, and escapes into the atmosphere partly through the overow-chamber a and passage g3, and partly through the discharge-chamber aT and passage Vhen the hand-leveris turned through an angle of about ninety degrees, the main steam-tube c is removed from the conical face k, and therefore steam is permitted to issue also through the inner tube, c, while at the same time the starting-valve is closed at gl and g". The double escape of the steam-and-water mixture therefore ceases, and the pressure or velocity of the jet of steam and water is raised suiiiciently high so as to overcome the pressure in the boiler, so that the valve a is forced down and the water fed into the boiler.

rIhe starting-valve shown in Fig. 2 is con- Structcd in a little diii'crent manner from that represented in Fig. l; but the parts being peculiar to both constructions are indicated with similar letters. Here the plug gZ of the startingvalve forms itself the two valves y" and g,ai1d a diaphragm, y, is adapted to separate the two escapes g5 and g from cach other.

The injector shown by Fig. 3 is quite similar to that shown by Fig. l, with the sole difference that'both steam-tubes are rigidly connected together, and the outer tube, b, which is provided with a packing, b', is movable in the aperture of the diaphragm between the steam-chamber a and the water-chamber a".

The use of the conical face k for keeping closed the main steam-tube c is of special advantage in injectors intended to force the liquid upward,like that shown by Fig. 4, which figure is to be turned ninety degrees, so that the pin cis at the bottom end of the injector. In this modification the lower end of the inner steam-tube, c, rests from the action of gravity upon the Iixed screw-plug k, and when the boiler-steam is allowed to enter through the aperture a said st eam contributes to tightly force the tube c onto the plug 7c. Afterward, when the pin k is pressed inward, it strikes against the cross-pin or tappet cgiixcd within the tubec, and as soon as this tube is somewhat lifted the entering steam will fully lift it. The lifting of the tube c can, however, also be effected exclusively by the entering steam, as the impulse given to said tube by pin L can be avoided by the modiiied construction shown by Fig. 5. h is here the screw-cap containing the aforementioned Xed conical plug 7c, which in this case is made with a hollow space having steaminlet apertures 7a2 and steam-outlet aperture kf. rIhe pin 7c is formed with a conical end, which is enabled to close the outlet aperture 7c3. W'hen the boilersteam is allowed to enter the steam-chamber of the injector, the steam contributes, as in Fig. 1I, to tightly force the tube c onto the plug la. Afterward, when the pin lo is a little unscrewed, a sufiicient quantity of steam is permitted to enter the tube c and to lift it somewhat, and the larger quantity of steam now entering the tube c between the end of this tube and the conical face k will fully lift said tube c.

I claiml. In an injector with two concentric steamtubes, the inner one of these tubes being endwise movable, forming between them asteamway of ring-shaped section, and adapted to operate a fixed cut-olf valve by the movement of the inner tube, the combination, with said tubes, of a fixed conical Valve for the inner tube, a valve-seat on the movable inner tube adapted to act in correspondence with said Iixed conical valve, and means for the adjustment of thetube, substantially as and for the purpose set forth.

2. In an injector with two concentric steamtubes, the inner one of tl1ese tubes being end- IOO IIO

wise movable,forming between them a steamway of ring-shaped section, and adapted to operatea fixed cut-off valve by the movement of the inner tube,the combinatiomwith said tubes b'and c, of a fixed conical valve, k, for the inner tube, c, a valve-seat on the movable inner tube, c, adapted to a'ct in correspondence with said xed conical valve k, and pin k', for the purpose of shifting the tube c by steam-press ure, substantially as described.

3. In an injector with two concentric steamtubes, the inner one of these tubes being end- Wise movable, forming between them a steamway of ring-shaped section, and adapted to operate a fixed cutoff valve by the movement of the inner tube, the combination, with said tubes, of a fixed conical valve for the inner tube, a valve-seat on the movable inner tube adapted to act in correspondence with said fixed conical valve, means for the adjustment of the tube, and a starting-valve for double water-escape, containing a valve for closing the outlet from the overflow-chamber, and a second valve for closing the exit from the dischargechamber, all connected and operating substantially as described.

In'testimony whereof I affix nly siguaturein presence of two witnesses.

FERDINAND BRUN BAUER. Witnesses:

EDMUND JUssoN, OTTO SOHIFFER.

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