US861565A - Burner-regulator for steam-boilers. - Google Patents

Description

El. 0 9 l O1 OO Y L U TU D E T, N E ,T A ,P

nn.. T I H W H.. R. m 6 5 L, 6 00v m ,N

BURNER REGULATOR FOR STEAM BOILERS.

APPLICATION FILED APRS. 1900.

2 SHEETS-SHEET l.

lPATENTE) JULY 30, 19(3'7.- R. H. WHITE.

BURNER REGULATOR FOR STEAM BOILBRS.

APPLICATION FILED APR-3. 1900.

2 SHEETS-SHEET z,

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EoLLiN 11.'wn1TE, or oLEvELANn, 01110, AssIoNoE To THE WHITE SEWING MACHINE sonia/tsr, or CLEVELAND, 01110, A oonPoEATIoN Oromo.

no. tresses.

Specification of Letters Patent.

Patented July so, 1967.

Appleman ned apra 3,1900. serial No. 11,311.

To all 'LeT/om 'it may concern.: i

Beit known that l, Bonnin H.. WHITE, a citizen of the United States residing at Cleveland, in the county oi Cuyahoga and State of Ohio, have invented a certain new and usel'ul improvement in Burner-Regulators for Steanelhwilers, ol' which the following is a lull, clear, and exact description, reierence being had to the accompanying drawings.

The ii'ivention relates to mechanism for controlling the tiow ol tuel to the burner by which the steam generator is heated.

The invention relates to apparatus in which fluid luel is used, and it is .spe.ci.. ,Y useful on steam car riages and steam boats.

The object is to provide niewis which will operate automatically to regulate the mnt of fuel burned and consequently the. amount oi' steam generated, or be operated atwill to entirely'shut off the which may fuel supply.

The invention consists in the construction and combination ol parts hereinafter described and pointed out delnitely in the claims. v

In the drawil'xgs, Figure lis a plan 'view of the device showing only the lower coil oi the" genera-tor and pipe E and the other pipes respectively connected with said lower eoil and pipe E; and Fig. 2 is a side elevation, partly in section, ol' a steam generator adapted for combination with said invention, which figures also show the invention so eon'rbined. Fig. 3 is a plan View, partly in section, ol' the invention; Fig. 4 is an elevation, partly broken away', of the thermostat and the mechanism whieh it operates, and Fig. 5 is an end view partly in section ol the valve Casing and the valves eontained therein, one oi which is operated by the thermostat. i

'l` he generator as shown is a ol a plurality oi coils. A, 1V, one above another over the burner ll. connected in series from the top tothe bottom; the water is loreed through the pipe C into the upper coil and the steam leaves the generator through the pipe l) which 'is connected with `like,lowest. coil. When the generator is in use the two or three or more lower coils whieh will be superheatwl while in said coils. The connections bet-Ween the sev eral (mils-is preferably by riser tubes F which pass over all ol' the. coils-#which conslruetion prevents water from Asettling by gravity into the lower coils. A straight horixont-.ll tube lll vt'orms a part ol the connection between the two lowest coils. 'lhis tube lies between the lmvest eoil and the burner, the steam passing l'ronr next to the lowest' coil into the lowest coil must neressariiy pass through this tube ll. This tube contains a mechanical thermostat adapted to be operated flasher and consists which are arranged lhese coils are by the changing temperatures, and byits operation to control the movement of the valve which governs the' flow of the fluid to the burner. The valve H which it so controls is a needle valve of familiar construction,

which' is adapted to move vertically by gravity to its seat and thereby to prevent the flow oi the fluid through the duct lain a valve casing The pipe M connects one end of this duct with a supply tank for the gas ory gasolene or other iuid fuel, while the other end 'of said ductterminates in a nozzle which discharges into thel burner B. .A needle valve L, having a. screw threaded connection with the casing may be turned' by .hand

and 'thereby moved toward or from its seat, which is located in the duct k, preferably betweenl the valve H and point where the pipe M is connected'ywith the valve casing; and it is adapted to entirely lshutl off the flow of gas through said casing to the burner. This 'valvefL is however, always open when the boiler .is

in use, and at such times the automatic' movements of the valve Il regulate the flow of the' fluid to the burner.

The valve H in the 'particular Aconstruction shown is raised from its scat by one arm n of a bell crank lever which engages with collar h, which is screwed ontothe valve,'-the other arm n of vthis bell lcrank lever being located so as to be engaged by a rod P which is a part of the thermostat.

.The specific, thermostat shown is composed of vtwo parallel piecesof metal G and P which expand unequally under the influence of steam. The piece G is a tube which may be madeof copper or other metal vo relatively great expansibility, and the end ofthis tube is fastened to the valve easing, while its other end which is closed is fastened to the .adjacent end of the rod P which is in said tube. This rod should lie-made lol' iron or some other meta-l which does not expand as much as the tube G. The free end o this rod l? enters the valve casing and is adapted to engage with the' arm n of the bell crank lever. .This thermostat is surrounded by the steam in the tube E, and is consequently in a position to bc lengthened or shortened by the changing temperature o Vthe steam.

' The parts having beenuproperly adjusted, operate When it is reduced the rod l iiioves in the contrary direction with the result of slightly opening the valve.

up or down so that its valve will be raised or seated b/y v the thermostat at any predeterminedtemperatures of lingl lthe supply of combustible delivered to the burner, and

Aon said valve stem, and a bell-crank member pivoted witli- 'whereby excessive heat results simply in the separation 'lh is action goes o'n automatically and continuously, the valveH being openedwhen the boiler is not generating as much steam as is necessaryl to properly sup ply the engine, and being closed Wh'enutoo much steam is being generated. l The'screw valveL is closed when it is desired to stop generating steam.

There is a hole in the top 'of the valve casingA through which the valve H 'may be' inserted.y This .hole is closed l by a screw plug,' which may be removed Whenever` the valve H is to be removed. The collar h' screws onto the valve II and may therefore be adjustedvr the steam Itis not therefore necessary in constructing; the described parts in quantities that all thermostat@ shall beof exactly thesame size or have the same eX-j pansibility.

Having described iny invention, I claim:

1. The combination of a steam .generator comprising a continuous coil, and aheating 'burner therefor; of a thermostat placed within the coil adjacent to the burner and 'consisting of an outer ltube of relatively high expansibillty, a head to-wllich yaid tube is secured at one end, a rod of relatively low expansibilitv within said tube, a casing secured to said head, a self closing valve-for controlhaving a stem slidable in said casing, an adjustable nut inthcfcasing and having one portion bearing against said nut ,and the other against said rod,. said tube, rod, bellA crank and nut being'disconnectL-.d at at l'east one point of such connection, substantially as desci'ibed.

'lhe combination of a steam generator comprisingy a ciintinuous coil and having near -its dt irri-go end a sii-aight pipe section, and a heating Mburner therefor, with a head secured to said straight coil and plugging one end thereof, a tube of high cxpansibility which is .fastened to' -v said head and extends -therefron'i iniio said straight pipe fsectiou and has a closed outer endL te; rod of relatively low 4.()

ply *of combustible delivered to the burner, and having a' 45 slidahle stem which projects-into the-casing chamber angk has an adjustable shoulder therein, andfa pivoted belli' crank lever located in said casing, one arm whereof is en' gaged by the end ofl the thermostat rod while tbeother arm of said lever engages the under side ot said Aadjustable shoulder on the valve stem, substantially as described. /3. in a thermostat, in combination, a head, a horizontal ,tube of relatively high expansibility connected atene 'end thereto, a casing secured to said head and having fiat par nllel vertical sides,'a bell-crank pivoted within said casini;` and guided by said sides, a rod of relatively low eapansif bility within saidtube confined within the tube at the outer end thereof Vbut freely abutting the bell-crank, said" casingr having a depending tubular portion having entrance and exit passage-ways communicating therewith, a valve stem within such tubular` portion operating;l to centrol'the inter-communication of such passage-Ways, a nut screwing onto said stein and engaged on its under side by said bell crank, there being au opening,y into the casing adjacent to said nut vfor adjustini,r it,l and means for closingr said openin"I with free space beyond the nut and stem whereby exce `iv(` cold, simply moves the stem into such free'space and excessive lient separates the bell-cranlcandrod eonuectioni'rom the same to the highly cxpansible tube, substantially :1s described. v f

in` testimony \\hcreoi', l hereunto allix my signature in liul presence of two witnesses.

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