US310768A - wotapek - Google Patents

Description

llnrr n starts Parana @rricht BERTI-IA WOTAPEK, CF NEWV YORK, N. Y., ADMINISTRATRIX OF JOSEPH WVOTAPEK, DECEASED.

EXHAUST-NOZZLE FOR LQCOMOTll/ES.

SPECIFICATION forming part of Letters Patent 1\l'0.310,'768 dated January 13. 1885.

Application filed November 20, 1884.

To all whom it may concern.-

Be it known that J OSEPH \VOTAPEK, de-' ceased, late of the city, county, and State of New York, did during his lifetime invent a certain new and useful Improvement in Exhaust-Nozzles for Locomotives, 8m, of which the following is a specification.

The improvement hereinafter described, while designed more particularly for locomotive service, is also adapted for use with traction-engines, marine engines, &c.

Before the invention of said YVOTAPEK the more usual way of arranging exhaust-nozzles in locomotives was to place the two exhaust nozzles side by side in the smoke-box and below the smoke-stack. Under this arrangement the center lines or longitudinal axes of the nozzles were not in line with the longitudinal axis of the stack, and in consequence of this the exhaust-steam would strike one side or the other of the smoke-stack with the result of reducing its velocity and causing part of it to be left behind, thus destroying the vacuum in the sinoke-boX-in other words, the utility of the exhaust-steam as a medium for the production of the necessary draft was materially impaired. An increased speed of exhaust-steam was required in order to overcome this obstacle to the free induction of the steam into the stack, and this was obtained by considerably contracting the discharge-orifices of the nozzles; but such contraction of exhaust-nozzles causes back-pressure in the cylinders, and besides this produces at each stroke of the engine a high vacuum in the smoke-box, which causes a constant tearing up of the fire and an unsteady temperature in the fire-box and results in a great waste of fuel. It has been essayed to remedy these objections by arranging the exhaust-nozzles concentrically with one another; but such arrangements have been de fective in that the steam has not been fully availed of to exhaust or carry off with it the gaseous products of combustion.

It was with a View to overcome the difficulties above referred to that the said WOTAPEK devised his invention, which may be stated in general terms to consist in combining, with the smoke-stack, two cencentric exhaust-noz- (No model.)

zles located centrally below the smoke-stack and one above the other, and areceiving-cone surrounded by the upper exhaust-nozzle and located in a position to receive the steam from the lower nozzle, together with the gases drawn along with said steam. The upper nozzle only need have an annular discharge-orifice, said orifice being at or near the upper end of the receiving-cone, which it surrounds; but it is preferred to give both the upper and lower nozzles annular areas, since in thisway the acting surface of the steam is still further increased.

The nature of the invention and the manner in which it is or may be carried into effect can best be explained and understood by reference to the accompanying drawings, in which- Figure 1 is a transverse vertical section, partly in elevation, of a locomotive smoke-box containing the improvement. In this figure both exhaust-nozzles have annular areas, and this is the preferred arrangement. Fig. 2 is a like section of the same, with a modified arrangement of the exhaust-nozzles.

Like reference-letters in the two figures indicate similar parts.

In Fig. 1, D is the locomotive smoke-box. C is the smoke-stack. e are the live-steam pipes, leading, as usual, from the boiler to the steanrchests of the two engine-cylinders; and c d are the exhaust-pipes, which lead, as usual, from the cylinders and terminate in the exhaust-nozzles a b. Both of these exhaust-nozzles are annular. They are placed concentrically one above the other and below and centrally in line with the smoke-stack. The lower nozzle, a, surrounds areceiving-cone, A, and the upper nozzle surrounds a receivingcone, B, through which passes the steam emitted from nozzle (0, together with the gases sucked up with that steam. Under this arrangement the exhaust-steam passes up centrally to the receiving-cone and stack, and coming equally in contact with the same on all parts of their interior faces, and doing its work without loss of velocity or decrease of vacuum. A more efficient action of the steam is obtained than heretofore without undue contraction of the nozzles, consequently backpressure in the cylinders is considerably reduced, and the vacuum in the smoke-box is more stable, thus preventing the firefrom being torn up, and maintaining a steadier temperature in the fire-box and a better combustion of the fuel. By giving the two nozzles annular areas the steam is caused to act more efficiently. Each receiving-cone A B communicates freely with the interior of the smok ebox, as shown, so that the smoke and gases can pass up through them. Each steam-jet, owing to its annular form, has an outside and an inside sucking-surface, as it may be called, which sucks up and carries along a greater volume of gases than would be the case if the jet were tubular. In the latter case a considerable portion of steam toward the middle of the jet escapes through the smoke-stack without coming in contact with the gases, while in the case of an annular jet nearly every particle of steam is compelled to do its work.

Fig. 2 in nowise differs from Fig. 1, save that the lower nozzle, lettered f, is tubular instead of annular. It is, however, like the annular nozzle a, concentric with the receivingcone B and annular nozzle 1) above.

Having described the improvementand the manner in which the same is or may be carried into effect, what is claimed herein as new, and of the invention of the said J OSEPH WOTAPEK,

0 is as follows:

1. The combination, with the smoke-box and the smoke-stack, of the two exhaust-nozzles placed concentrically one above the other and centrally below the smoke-stack, and a receiving-cone surrounded by the upper nozzle, through which cone passes the steam discharged from the lower exhaust-nozzle, together with the gases drawn along by and with that steam, substantially as hereinbefore set forth.

2. The combination of the smoke-box, the smoke-stack, the two annular exhaust-nozzles placed concentrically one above the other and centrally below the smokestack, and two receiving-cones communicating with the interior of the smoke-box and surrounded, the one by the upper and the other by the lower exhaustnozzle, substantially as and for the purposes hereinbefore set forth.

In testimony whereof I, BERTHA W'OTATPEK, administratrix of the estate of thelate J OSEPH WOTAPEK, deceased, have hereunto set my hand this 18th day of November, 1884.

BERTHA WOTAPEK.

\Vitnesses:

J AGOB WV. MACK, ADOLPH BARGEBUHR.

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