USRE3809E - Improvement in steam-denerators - Google Patents

Description

UNIT RD STATES HENRI L. s'ruArrr. or New vouK, N.

PATENT OFFICE.

lM PROVJEMEQNT m STEAM-GENERATO R's- Specification. forming part ol' Letters Patent No. 68,598, dated September lll, 1567,; antedaterl July 19, 1867;

Reissue No. 3,102, dated August 23, 1863; Reissue No. 3,809, dated January 25, 187i). j

Dlv srou'B.

To all whom/it may concern.-

Be it known that I, HENRI L. STUART, of the city, county, and State of New York, by

virtue of an assignment from JOHN l BOYN- TON, of Syracuse, New York, bearing date the 6th day of October, 1.866, am the sole-owner of certain Letters atent for Improvements in stoma-Generators, granted to the-said JOHN F. BOYN'ION on the 10th day of'Septcmbcr, 1867, and reissued August-25,1868, No., 3,102, Division B that I ,.de'em said patent as reissued inoperative and invalid by reason of a; defective specification; and I,do declare that the follow'i 1g"is a full, clear, and exact. description ol' that part of said invention included inthis division.

'My invention, as set forth in this division, relates to a method of preventing steam-boilers l'rom bursting; and it consists in a means for equalizing the temperature in all parts of the boiler.

It is a well-known fact that steam, like air or gases, is a poor conductor of heat, so that steam in the upper part of the boiler or steamchamber may be heated much higher than the steam inalowcr part, which lies in contact with the water. A gain, it is known that steam and gas will not convey hcat' downward as readily as upward, as the heat conveyed downward is by radiation, while that conveyed upward is by translation of particles. I As in the :ase of water, steam is a poor conductor of heat by radiation, but a rapid diti'user by translation oi" its atoms. It is believed that explosions of steam-boile1s often occur from the steam in the upper portion of the steamspace becoming much hotter that .in the lower portion, causing an unequal expansion of the dill'erent parts of the boiler, tending to. produce st 'ains, ruptures, and explosions. By the devices hcrciu set forth I cause a shower of water tobc rc ularl y ejected into the steamspaee of the boi or at intervals, tra'tnsferring the heat from the steam to the water and pro ducing an equilibrium of temperature."

The accompanying drawing represents a vertical section of a steam-boiler with internal pipcsfor this purpose, and of an automatic heater and feeder attached thereto.

A isthe shell of the boiler; ll B, water and steam pipes running through the boiler from bottom to top. 0, openings or jets in the upper portion of the pipe, for the passage oi steamer water. 0' is the induction-pipe for introducing feed-water into the boiler, and C is the induction-pipeibr introducing water into the tube P. Dotted line as a shows the water-line of the boiler. The water-being .forccd into the tube B through induction-pipe 0*, while passing through said tube B will be increasing in temperature until it passes the water-line, where it will begin to expand into steam, and will finally bedischarged in steam .itlld water eomminglcd through the openings 0' in the upper stratum of steam in the'boiler, thus seen ring an equilibrium of steam through,- out the'bo'iler; or the water may be heated in any other suitable or convenient manner and injected into the steam-space of the boiler. The water may also be taken from the lowestpartot the boiler and thus injected, accomplishing the same result. Y

In connection with this improvement I prefer to use an automatic heater and feeder oi the following construction: F is a reservoir, in

which water is first heated by the exhauststeam, and from which it is auton-iatieally ted to the boiler. IQ is a steampipc 'l'or equalizing the pressure in the boiler and the automatic reservoir F. It is the induction-pipe for the exhaust-steam; r a chamber surrounding the automatic reservoir for heating the feed-wator and condensing the escaped steam. 1 is the exit for the uncondensed exhaust-steam; J, fines for the passage of escaped steam; 1), a

pipe for the conveyance oi water by its own gravity from the reservoir F to the boiler or the tube 13; K, a pipe for the passage-oi the water of the condensed steam to the forcepump'; L,point'ior attaching a i'orccqnnnp; N, feed-pipe for supplying reservoir from-a hydrant or cistern automatically by means of the vacuum formed by eondensin g steam when cocks 1, 2, and 3 are closed and No. 5 open; and M M are supports for the automatic feeder. \Vhcn cock 2'is opened, the pressure of the steam in the boiler and in the automatic res ervoir will cause the water to flow by its own gravity into the boiler through pipe 1) it cock I; be opened, or -i nto tube B i l" cock 1 be opened. When cock 4 in pipe K is open, the water of the condensed stcanrwill flow down to the,

a I am ewehilip. It; will be observed that v'rheiif cock No. 1 is closed and cocks Nos. 2 and-3 open the water fromjhe reservoirwill passzdi- .reetsly into the'beiler without traversing the tube B. When 006k 3 is closed and 1 and 2 0pen, the-water wi1l"'pass into tube Baldy; bug; when cocks 1 2 3 are al1 .open the water will pass from the reservoir into the boiler di reetly and into the tube B atthe same time}: Before passing'tethe'boilerior the tubeB the Water will be warmed by means bf the exhaush;

steam.

WhatlI claim in this division as the invem tionpf the said JOHN F; BOYNTONL ami desire to secure by Letters Patent; is.-- jstantially as set fort 1. The equalizatien-of the temperature of various parts of steam-boilers by inj eeting water into the'stea'm-spa'ce of such boilers, sub- .2. The apparatus herein sh OWIl and set forth a or its equivalent, when used for this purpose,

the same operating in tlie'manner'sebforth to equalize the temperatilre 0f steam-boilers, s'ubstantially as described. s U xRT.

; I Witnesses! J. -BA SET'T',

j H. CARLOS.

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