US957601A - Regulating apparatus. - Google Patents

Description

J. M. DOUGHERTY a H. C. TABLBR.

REGULATING APPARATUS.

APPLIGATION FILED M547, 1909.

957,601 Patented May 10,1910.

T0 SEWER.

noon o aaai JHN IM. .'U'GHERTY AN HARRY G. TAELER, 0F

ST, LOUIQ. TWESSOURI.

REGLATING PRATUS.

sensei.

Specification of Letters Patent.

Patenteill May it?, 19t@ Application tiled March l?, i909.l VSerial No. 483,946.

To all whom 'it may concern:

Be it known that we, Jenn M. Denonnnrr and HARRY C. Tannen, citizens ot the United States, residing at Slt. Louis, Missouri, have invented a vcertain new and useful Improvement in ltegulating Apparatus, of which the following ie a full, clear, and exact description, such as' will enable others skilled in the art to which it appertains to make and use the same, reterence being had to the accompanying drawings, forming part et this specitication, in which the iig ure is a side elevational view, part-ly in section, of our improved regulatii'ig apparatus.

This invention relates to a new and useful in'iprovement in regulating apparatus designed particularly tor controlling the drafts of furnaces, the apparatus being operated by compressed gases whose pressure isv dependent. upon the ten'iperature ot the heatine` medium sent out from the furnace. It is obvious, as will be seen from the further description o t' our invention, that our improved regulating apparatus is useful in connection 1vith the control of valves or de-` vices other than the dainpers ot furnaces.

In the drawings, l indicates the furnace, which is provided with the usual tiring door 2 and the ash-pit door 3, the latter ot which controls the draft to the ti'trnace.

4f is a pipe for comino-ting the products of combustion te the chimney, said pipe being provided with a door 5 'which is designed, when open, to admit', cold air into the pipe whereby the draft'. is reduced, and when closed to increase the draft, in etl'ect, by permitting the supply of drawn into the chimney to be drawn wholly trom above the tire-pit in the furnace.

A cable G is connected to the door 5 and passes Aover pulley 7 and 8 to lever tl. A cable l0 connects lever 9 tothe door 5S. lVhen the end oit lever 9, to which these cables are connected, is lowered. the door 3 is closedfand the door 5 opened., which results in not only shutting ott the supply ot oxygen to the tire-pot, but also in admitting cold air into the chimney so as to red uce the cold draf-t thereof. When lever fl is raised, door 3 is opened to admit oxygei'i to support combustion of the fuel in the lire-pot and the door 5 is closed to increase the dra'tt of thecliimney. liever 9 is counter-balanced by a Weight ll, said lever being tulcrumed l2 to a suitableiixcd support. The hotuiater Whichis heatedl'in the furnace is sont out to the radiators in the building` through a distributing pipe 13 leading trom the top ot the boiler, the water, after radiating` its heat, returning through pipe lll, which communicates to the lower portion of the boiler. n u

l5 indicates a clean-out pipe leading trom the bottom ot the boiler to the seiner tor nell-understood purposes.

itl is a pipe leading trom the het water pipe back to the lower or cold water side ol. the boiler, said pipe being provided with a valve i? and a branch pipeltl leading into a tank or chamber l5). provided with the usual water gage for wellunderstood purpose. From the upper end 'of the tank leads a pipe 20 connnmiicating with a reservoir 2l, said reservoir connected by pipe 2Q to chamber above the diaphragm 23, said diaphragm being connected by suitablt` plunger @fl to thev lever tl. ,instead `et coi'mnunicating with the chamber above the diaphragm, pipe 22 can lead into a, bellows or piston cl'iau'lber, whereby the pressure admitted into said chamber, like the pressure admitted above the dia'plnagm, will cause the movable. wall ot the chamber to operate the part. or element connected thereto. he pipe iti has another branch leading into what, lmoivn as a trap, constituningv a safety device tor relieving the system ot en* cess pressure. This trap comprisesa casing 26 having va reduced lower end into which the pipe 25 extends, said reduced lower end being lille-d with mercury, which constitutes :i column, the lheight ot Vwhich, ouiuicoluit oif the hydrostatic pressure exerted, controlling the pressure in pipe 25. in pipe exceeds the hydrostatic pressure ot column in mercury, then pipe Q5 relieves itseliu by blowing.through the column ot mercury and out through a discharge pipe Q7 leading trom the upper cnd'o'l casing lo to the seivcr.. 'lhcy inner end of pipe is in the 'form ot a uloditied goosencel: trap, the upper end being open and the lower portion oit' the gooseueck termimitiug in a te; 'i through which mercury, which may splash into the upper open end otpipe QT, may iind its way back into the chamber 26. 1

rlhe operation et our improved regulating apparatus is as follows: Assuming that the height ot thecolumn o1 mercury in the casinglt is fixed .tor a predetermined pressure above which the system Will blow off 7 and that .tire is started' under the boilerl@ The lhis 'tank lt) may be4 lWhen the pressure,

valve 1T is closed beforelivater is admittled to the system, to charge the tank manually or tofore the air in the upper' part ot the boiler down through the circulation pipe lo and up into the tank 19 andy reservoir :21 so as to trap as much air as possible. After this the valve 17- is opened, which will permit the water totiow into the lower portion of tank 19, acting to compress the liuid in said tank. As the water becomes heated, the gases therein espand and as the system is closed, that is, there is no open expansion tank at the top ot' the system, in the so-called open systems, the expanding gases act. to displace the water, and its only room for expansion is in the tank 19. As the water becomes heated. it therefore rises in tank 19, as the fases in the water expand and the pressui'e ot the gases trapped in tank 19 will act upon the diaphragm 23, causingv it to exert its pressure on lever 9 so as to lepress the end of said lever to which the Cables 6 and l0 are connected. This lowering of lever 9 will close the door i and open the door 5, which will result in shutting the drafts, making a t cooler tire. By adjusting the weight 11 along the oppositeend ot lever 9, which opposite end is preferably I tons operating in chambers provided with a scale, lever 9 will be operated by a diaphragm can be regulated to a nicety. The device is thus rendered responsive to ditt'erent temperatures required according to the position ot' weight 11.- ()f course cables and lt) may be shortened or lengt tened as occasion requires, it' desired. The mercury trap which operates as a safety device, will, in the event ol' the water in the system becomingtoo hot, blow oit and relieve the system. Should there be a leakage around the diaphragm so as to permit the escape ot the gases trapped in the tank-p19, the rise ot'th-e water in tank 19 will' indicate that fact through the water gage. Reservoir 21 increases the capacity ot tank 19 and also serves chamber for any moisture or water of condensation accumulating in the pipe Y lt is obvious that instead ot' having a diaphragm operatingr through a lever and cable connections, the doors 5 and 3 could be opened and closed by directly connected pisin connection with the pressure gases in tank 19.

7We believe that we are broadly new in the utilization ot' variable pressures on Huid-actuated devices in closed systems, said variable pressurcs being employed l'or regulating purposes.

We are aware that minor (,:bangcs in the construction, arrangeimnt and combination the point at which as is common i i i l l l as a collecting' l. l'In a regulating appa atus, the combination with a boiler in a closed heating system, said boiler delivering hot water to an outgoing distributing pipe and receiving cold water from an incoming collecting pipe, a pipe short-circuiting said outgoing and incoming pipes. a chamber connected to said short-circuiting pipe t'or receiving water at varying degrees amlpressures, said water exercising varying pressures upon gases trappedin the upper portion ot said chamand means operated by the trapped gases in said tank for regulating said heat-generating medium.

2. In a regulating apparatus, the combination with a boiler in a closed heating system, said boiler delivering hot water to an outgoing li:-.tributing pipe and receiving cold water from an incoming collecting pipe, a pipe short-cireuitiiig said outgoing and incoming pipes, a tank connected to said shortcircuiting pipe t'or receiving water at varying degrees and pressures, said water engercising varying pressures upon gases trappe in the upper portion ot' said tank, a heatgenerating medium ior the boiler, means operated by the trapped gases in said v tank for regulating said heat-generating medium, and a mercury trap connected circuiting pipe whereby excess pressures from the system may be relieved.

l). ln a regulating apparatus for closed heating systems, the combination with a water heater of a pipe leading from the main distributing pipe of the system to the boiler, a closed chamber connected to said pipe and adapted to receive hot water from the heating system, which water traps and compresses air in the'upper portion of the closed chamber, a regulating device connected to the intake, and check draft of the. water heater and a translating apparatus to said shortber, a heat-generating medium for the boiler,

vln testimony whereot', we hereunto atlix our signatures m thc )resence otl two witnesses, this 15th day ot March, 1909.

JOHN M. DOUGHERTY. .HARRY C. TABLER.

Witnesses: y

F. R. Conn wam. t. Lenola: CLARK.

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