US532088A - Frank - Google Patents

Description

(No Modem l I F. W. OFELDT.

STEAM WHISTLE.

` No. 532,088. Patented Jan. 8, 1895.

Y UNITED STATES PATENT grrrcn."

FRANK. W. OFELDT, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO THE MARINE VAPOR ENGINE COMPANY, OF SAME PLACE.

STEAM-WHISTLE.

SPECIFICATION forming part of Letters Patent No. 532,088, dated January s, 189e.

\ Application led December 23, 1893- Serial No. 494,590. (No model.)

To all whom it may concern:

Be it known that I, FRANK. W. OFELDT, of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Steam- Whistles; and I do hereby declare the followingto 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.

My invention relates to an improvement in steam whistles, the object being to provide improved means for the generation and control of steam for use in blowing Whistles; and it consists yina boiler adapted to receive water and have steam generated therein, a pipe leading out of this boiler, and means for heating the boiler whereby steam is generated in connection with a whistle to which the steam' generated is applied.

It further consists in certain novel features of construction and combinations of parts, which will be hereinafter described, and

` pointed outin the claims.

My invention comprehends devices consisting of a cold water tank connected with a steam generator or boiler wherein the water circulates under an elastic pressure into the boiler through a suitable pipe, the boiler being provided with a whistle or alarm device, and the steam therein being` adapted if the pressure becomes excessive to force itself by t its own pressure backward toward thecold water tank and become condensed, whereby the apparatus is automatic in its action and absolutely safe in its operation.

In the accompanying drawings, Figure lis a view showing the entire apparatus connected together for operating the whistle, and Fig. 2 vis an enlarged sectional View.

A represents a boiler it being located in some convenient heating chamber s'uch as a retort B as shown where heat is generated by means of a burner C or it might be located in any other heating device or chamber suitable for the purpose, the object being to generate steam in the boiler. Whenv a retort is employed such as the`one shown a series of coils of pipes D, D, may be wound loosely around the boiler for generating vapor in the retort. This construction is more particularly described and claimed in a separate application concurrently pending. It is merely alluded to here as the pipes D, D, have a tendencyto assist in concentrating and radiating heat and in consequence add to the efficiency of the invention.

Immediately surrounding the boilerA is a steam pipe a which is in communication with one end of the boiler and is coiled around the latter from this end to the other, the purpose of this pipe a, being to conduct the steam from the boiler to the whistle and at the same time to cause the steam in its passage through it to become superheated and dry. The coils of pipe a are not close together so that the heat from the burner :is not shut offfrom the boiler A and the coils of pipe a eachzresting upon and surrounding the boiler, not only receive heat from the burner direct but also from the boiler itself so that the su perheating is successfully accomplished.

The superheating coil or pipe may be omitted if desired, and the whistle connected directly with the .boiler A, as in most cases the temperature of the boilerlmay be maintained sufficiently great to obviate the necessity of any special superheating of the steam.

The whistle itself is operated in the usual way and hence it requires no description, it simply being provided with a valve under the control of the engineer for the escape of steam. s

lWater is supplied to the boiler A from a tank E, the latter being refilled when occasion requires it. A condensing pipe e leads from the tank'down through the water beneath the boat when the whistle is used on a boat or through some other condenser when used in any other place.

Air pump F is connected with the tank E and by means of it a suitable pressure of air is created in the tank to cause an automatic ilow of water from the latter into the boiler A, so that the boiler is always supplied with an adequate amount of water for the generation of steam. In this way of courseas soon as steam is blown 0E in blowing the whistle more water flows in at once to supply the boiler, and on the other hand any excessive pressure of steam in the boiler causes a back pressure upon the water in condensing pipe IOO e andrin this manner the steam nds escape back through the condensing pipe where it' 'If the tank E is madesuflciently'large Ait might of itself actas the .means for condensing the steam which may be forced backward from the boiler, though in the case of launches y it is advisable to employ the condensing coil arranged upon the bottom of the boat.

Slight changes and variations might be made in the various details of the invention' without departure from the spirit andvscope of my invention and hence I do not wish to limit myself to the exact construction herein set forth, but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. In awhistle, the combination with alleating chamber,.and a steam boiler, of a superheating steam pipe leading from the boiler and adapted to conduct steam from the boiler to the whistle, and a condenser connected with the boiler, substantially as set forth. 2. In awhistle, the combination with alleatin'g chamber, and a steam boiler, of a superheating steam pipe leading from'the boiler and adapted to conduct steam fromlthe boiler to the whistle, a water tank, and a condensing pipe extending from the tank to the boiler, substantially as set forth.

3. In awhistle, the combination with aheating chamber, and a boiler, of a superheating steam pipe leading 'from the boiler and adapted to conduct steam from the boiler to the Whistle, a water tank, a pipe extending from the tank to theboiler, and an .air pump for creating a pressure of air in the tank, substantially as set forth.

el'. The combination in a steam generator, a pipe leading therefrom and terminating in va Whistle, an air tight cold water tank having an air space above the Water, a water `pipe leading from the tank below the water level and opening into the generator, and means to create an air-pressure in the .water tank approximately equal to the maximum pressure allowable in the generator, whereby if said pressure is exceeded thewater is driven back from the generator into the cold water ltank.

5. The combination of a steam whistle, a

. steam generator or boiler, a pipe connecting the generator or boiler with the whistle, a wa- -ter lreservoir in ,constantfree communication with the generator or boiler, and means to cause the water to freely circulate between the reservoir and boiler in both directions under elastic pressure. l

6. The combination Vof asteam whistle, a steam .generator or boiler, a pipe connecting the generator or boiler with the whistle, awater reservoir in constant free communication with the generator or boiler, and means to cause the cold water to freely circulate between the reservoir and boiler in both directions -under `maintained air pressure.

7. The combination of a steam whistle, a steam generator orboiler, a pipe connecting the generator or boiler with the whistle,a water tank, means to .force the water into the boiler or generator under pressure, and a communication between the tank .and generator or boiler to permit the free flow of the hot water and steam backward toward the tank in case of an excessive pressure of steam.

8. The combination of a steam whistle,.a steam generator or boiler, a pipe connecting the generator or boiler withthe whistle, a water reservoir in constant free communication withthe generator or boiler, means to cause the water to freely circulate between the reservoir and boiler in both directions under elastic pressure, and a condenser to condense the steam which may be forced back from the boiler orgenerator.

9. The herein described method of ,maintaining a continued pressure of steam for 0perating a steam whistle at intervals of time which consists in supplying a boiler upon which a steam whistle is arranged with water under an elastic pressure with freedom of circulation into and out of the boiler in accordance with the pressure contained therein, and condensing the steam forced backward 'from the boiler toward the water supply when the pressure within the boiler becomes abnormally high, whereby a supply of water is delivered to the boiler automatically in quantities just sufficient to supply the requirement of thesteam whistle.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

FRANK. WV. OFELDT.

Vitnesses:

C. S. DRURY, GEO. F. DowNING.

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