US768019A - Automatic device for low-pressure heating. - Google Patents

Description

PATENTED AUG. 16, 1904.

. A EQELGOLD. y AUTOMATIC vDEVIGE4 EOE Low PRESSURE HEATING.'

4 SHEETS-SHEET L APPLIUATION FILED JAN. 11. 1904;

N0 MODEL.

m m A 'Pimm Inde/2z fdr r if EMM 1 No. 768,019.l EATENTEU AUG. 16, 1904.

E EE. GULU. l AUTOMATIC UEVIGE'EUE EGW EEESEUEE HEATING.

APPLICATION FILED JAN. 1l. 1904.

ilo loDEL.

4 SHEETS-SEEN 2.

1.,.. nung No.l 768,019.

TATTNTTU AUG. 16, 1904.

E. H. GOLD. AUTOMATIC UUUTUU TOR Low PRESSURE HEATING.

APPLICATION FILED JAN. l1, 1904.

4 SHEETS-SHEET 3.

N0 MODEL.

NO MODEL.

11H0. 768,019. PATENTED AUG. 16,1904.

E. E'. (101.11. A

AUTOMATIC DEVICE FOR Low PRESSURE HEATING.

. APPLIOATION IILED JAN. 11. 1904.

4 sHEETs-EIlEET` 4.

To all whom, it may concern:

..-=zen of the United States, residing at Shelby,

1 cation.

No. 768,019. l

UNITED l STATES Patented August 16, 1904.

f EGBERTH. GOLD, OF SHELBY, 1NDIANA-` uuTowrA'rloy DEVICE FOR LOW-PRESSURE HEATING.

srfEcIFrcATIoN forming part of Letters Patent 110.768,01), dated August 16, 1904. A Application led January l1, 1904. SeriaiNorlSSZfl. (No model.)

Be it known that I, Eonirr H. GOLD, a citiin the county of Lake and State of Indiana, haveinvented certain new and useful ,Improvements in Automatic Devices for Low-Pressure Heating, of which the following isa specifif My prescrit invention relates more particularly to improvements in that'class of apparatus which is typically illustrated and claimed in my copending application, Serial No. 185,122,

'A in `which' thesupply of steam Ato a' radiating vsystem is automatically controlled, primarily, by means of an expansion device which 1s preferably exposed tothe external atmosphere.

' The'object of mypresent-invention is to providean effective cleviceo'f-tl1is class which shall'be compact, which may' be entirely located outside of any heated spacci-las, for instance,

beneatha car-and which may be readily con- 'structed in double form, soasto provide for the heating of-both sides vof a car. These and .such other objectsias may hereinafter appear are attained by the'devices shown vin'ithe accompanying drawings,v'in whicl Figure 11s a vertlcal section through a part of v'a preferred form of my invention. Fig. 2 is a transverse section ony the line 2 2 of Fig. 1 looking in the direction indicated by the arrows. Fig. A3 is a transverse section on the line 33 of Fig. 2 looking' in the ydirection in dicated by the arrows. Fig. 4 isan elevation of my improved apparatus, showing' apart oi' the f ioor of a car and of the radiating-pipes with which my apparatus is connected. Fig fis a horizontalsection through a modilied form of myapparatus. Fig. 6 is a section on lthe line 6 6 of Fig. 5, and Fig. 7 is a View in elevatlon of such modified form shown in connection with apart of a car-Hoor and a part'of thecar-'hcating pipes.

. Like letters and numerals of reference indicate the same parts in the several iig-urea` of the drawings.

A indicates the fioor of .the car, B the trainpipe, C the radiating-pipes, D the steam-supply pipes through which steam suppliedto the radiating-pipes, E the hand-operated ,con- :5s

trol-valves, Iand F the return-pipes.

tus. This casing comprisesra vtubular section 1, adapted to be' attached at eachend to the 'train-pipe, an inlet-chamber 2, communicating with the tubular section 1, a strainer 3, and e valves 6 6 to control the communication'be- I tween said valve-chambers and the inlet-cham- IPA'TENT OFFICEQf y G is the maincasing of 'my control appara-"i ber 2. .The casing 'G is also providedwith outlet-chambers 7 7, which are separated from each other, but which communicate with the valve-chambers 4 4, respectively, only through .the pipes of the radiating system.

4 4, respectively, is closed by perforated plugs 8, through which reciprocate the stems 9 9 of the valves 6 6. Eah of said stems is provided with a ypolygonal collar 10, between which and the plugs 8 are loosely mounted packing-Washers 11, which are adapted to, lit against the iin- 'der face of the'plugs 8. `Secured to the upper ends of the vvalve-stems 9 9 are caps 12, provided on their under faces with annular seats for receiving helical springs 13, `which sui*- round the valve-stems 9 9*L and which are seated at their lower ends upon the vperforated plugs 8. The caps 12 are each provided with a headedstem 14. Pivotally mounted within the chambers 7 7 are levers 15, which are preferably forked at their ends, one forked endl engaging theiheaded stem 14 of a cap 12 an'dl perforations in the'bottom of the casings 19.,

surrounding the diaphragm-chambers.' The outlet-pipes F F' communicate; respectively, with the outlet-chambers 7 7". v

The apparatus as so constructed is mount- `edas shown in Fig. 4--that is, below the Hoor of a car-so that any diiculty in tittingthe apparatus to a car is simplified, because all of` the Working parts may be`.located outside of the car, and the car-floor need be perforatedA lroo 6 5 Communication between the chambers 7 7 andY A lonly for the passage of the discharge and supply pipes. 'l`he operation ol the apparatus as so constructed is as lollows: The train-pipe B being filled with high-pressure steam in the usual manner, steam therefrom passes through the steam-chamber 2 and thence through the control-valves in the valve-ehaml/)ers 4- 4, whence it passes into the steam-supply pipes l.) D@ lt will be understood that the radiating system leading from the valve-chamber 4 is entirely distinct and disconnected from the radiati ng system leading from the valve-chamber'zJ, one system being used in one side ot'- the car and. the other system upon the other side. (The valve E being opened manually, steam is free to tlow through the pipe I), the radiating-pipes C, and back through the discharge-pipes Finto the chamber7, thence to the chamber 17, and thence around the diaphragm 18 and to the atmosphere. It will be evidentthat as soon as the radiating and discharge pipes become filled with steam at such a high temperature that the steam or vapor reaching thevalve-ehalnbcr 17 will suiiieiently expand the diaphragm 1S the stem 16, being operated by the expansion ot' the diaiiliragm 18, will move, the lever 15 upon its pivot, thereby causing the depression of the valvesteni 9 against the expansion of the spring 13 and closing the inlet-valve 6. Upon the lowering of the temperature in the radiating system, so that the f liaphragm 18 at the extreme further end ot' the radiating system shall contract, the reverse operation takes place and the valve Gopens, admitting fresh steam. The apparatus will soon balance itseli', so that the amount otsteam admitted at train-pipe pressure through the Valve 6 will be just Suffieient to keep the diaphragm lb partially eX- panded, so as not to enti rely shut olf the steamsupply nor ,to admit the st am at full pres- Anyl reduction in the external temperature will result in a further contraction of the diaphragm 18 and a eorrespondinglyincreased supply of live steam through thel valve (i. y

With this explanation ot' the operation of the apparatus it will be seen that the et'- lieieney of the apparatus is increased by eeuducting the water ot' condensation and the stean'i through the exposed pipes le" to the discllarge-chamber7 before conducting it to the dial)hragni-,chamber 17, because the vapor whieh fiows into the pipe F, haring,already lost mueh ot its temperature by radiation trom'the radiatngj-pipes, will be still further and quickly cooled beeause et' the exposed position ol" the pipe l?, so that the diaphragm will remain contrae/tml until the, radiatingpipes (l are lilled with sileh a bodyot' live steam that liot'withstanding the reduction of its .temperature, which takes plaee as it flows may be lnounted elose to the bottom of the,

car, where it will not be so readily damaged as if it were otherwise constructed and located.

By-mounting my apparatus in duplicate., so as tov provide for both sides of the car in one device, I not only attain the advantage ol -compaetness, but obtain an additional element of safety for the following reason: 1Whenever either radiating system is shut ofi1 by closing the manually-operated supplyvalve E, there is always a possibility of some water oi condensation remainingr inthe pipes and slowly triekling into the outlet-i'xipe'F, for because of the high pressure in the trainpipe some vapor may leak through the valve E and condense in the radiating-pipes, the water of condensation thereafter slowly trickling down into the pipe F. Because of the exposed position otl the pipe F water o1 condensation would tend to freeze, and this eontinual operation of condensing, trickling, and freezing might under seme conditions result in ultimately stopping the passage throughthe pipe F; but with my apparatus constructed as shown either side et the heating apparatus is in operation there will IOO be acontinual tlowof live steam therethrough, y

the hottest temperature of whieh will be within the shaun-chamber 2whieh 'flow ot' hot steam will heat the easingG and willalso suiiiciently warm the air within the chamber 7, and so within the pipe F, to prevent the freezing o't' water within the pipe F.

ln Figs. 6, and 7 I have shown my apparatus further modified by mounting the easing horizontally instead oi vertically, thereby enabling me not only to adapt it to other situations and to still further place my apparatus out ot' harms way, but to attain furthe' ad vantzages in the operation of the apparatus. It will be noted that in this modilied structure theeasings 19",'eoutaining the diaphragni-chambers, are arranged horizontally,v so that the water of eomlensatien and return steam trom the return-pipes l" F will not iow through the chambers I Q"z1nd thence to the atmosphere, but will flow through outletports 2() in the bottom ell the chambers'T" 7". By means ot' this e mstruetion the water ot' eomlensation never enters the diaphragmchamber, the diaphragm is notailected by hot water, which, coming in contact therewith, would tend to partially expand thediaphragm,

through the exposed pipe l4, tlmsteam will f but the diaphragm remains eontraeted until still be ol a sullieiintly high temperaturol the ya vor llowine through the returni )es rs r-i IIO resale..

lF f'is of such a temperature .that entering.

' loc -nu'ts 23 2'4.

thediaphragm-ehambers and surrounding the i diaphragmsit will promptly expand the dia-vr phragme, while, on the other hand,l as soonv 'as' the vaporfiowing through the. pipe F cools i the diaphragm may promptly contract. Iv4

thus obtain a morecsensitive operation and prompt response of the control device than in thestructures shown in the other figures. It .will be noted-that'in'this modified form I have shown springs 21 arranged in the diaphragm chambers-4 and expanding against vplates 22, which arearranged on the faces of the diaphragms and surrounding the anges 'secured to -the lower ends of the stems 16 16, so as to insure the prompt opening of the valves 6.6 upon the contraction of the diaphragms, although it is entirely possible .to dispense with all springs and rely upon steampressure to open the' valves 6 6".

In the Structure shown the diaphragms are pr vided with-the usual adjusting-screws and I do not hereby claim any apparatus comprising `a radiating system communicating with the atmosphere combined with-a thermostatic motor exposed w\ithin said system and arranged to control the admission of a heating 'medium to its inlet end, asdisclosed -and claimed in my Patent No. 758,436, dated April .26, 1904.

Ielaim y I1. In a device of the class described, the combination with a radiating system located within a space lto be heated, of meansfor con- 'trolling the supply of a heating medium to saidradiating system, said means being lo-v cated outside ofthe space to be heated by the radiating system and comprising a casing containing a chamber through which the heating medium is supplied to the radiating system,

acontrol-.valvel mounted within said easing, so as to control the How of the heating medium to the' radiating system, a second chamber, an exposed return-'pipe leading from the radiating system to said second chamber,

" mechanism mounted within said lsecond chamber and 'arranged to operate said' 'control-valve, and a thcrmostatic deviceek'posed to the tem-g. peraturc of vapor owing into said chamber thro'ugh said return-pipe and arranged to actuate'said valve-operating mechanism, substantially as described. V

2. ln ya device ot' the class described, the

combination with two independent radiating systems located within a space to be heated,

' of means for separately controlling the sup# ply of' a heating medium to said radiating syster'ns, said means comprising a casing located :outside oi' the space to be heated by the radiating systems, separate return-pipes located outside of the space to be heated and leading from said radiating systems, respectively, to

i separate chambers within said casing, thermostatic devices exposed, respectively, to the temperatureof the vapor iiowingthrough said return-pipes andmechanism operated by said thermostaticdevices respectively, i'or controlimg thesupply of the heating medium to said respective radiating systems.

3. Infa device of the class described, the

gl combination with a radiating system, of a casating system, said casing being provided with -an outlet interposed between the return-pipe from the radiating system and the thermostatic'device,`for the discharge of water of condensatvion.

11. In a device of the classdescribed, the combination with a radiating system in Aopen communication with th'e atmosphere, of a casing communicating with both ends of the radiating system and provided with mechanismfor controlling the supply of a heating me-v dium to said radiating'system, a thermostatic device arranged to actuate said-:controlling mechanism and exposed to the action of the vapor returning to said casing from the radiating system, said casing being provided with` an outlet interposedbetween the return-pipe from the radiating systen and the thermostatic device, for the discharge of water of condensation.

' 5.- In a device of the class described, the

IOO

combination withv two independent radiating systems located within a space` to be heated and in open communication with the atmosphere, of means for separately controlling the supply of a heating medium to said radiating systems, said means comprising a casing located outside of the space to be heated by the radiating systems, separate return-pipes located outside of thespace to be heated and l'eading,fr0m said radiatingsystems, respectively, to separate chambers within said casing, thermostatic devices exposed, respectively, to the temperature'of the vapor flowing through said return-pipes and mechanism operated by said thermostatic devices, respectively, for controlling the supply of the heating medium to said respective radiating systems.

6. In a device of the class described, the combination with a radiating system, in open communication with the atmosphere, located within a space to be heated, of means forcentrolling the supply of a heating medium to said radiating system, Said means being lo cated outside ot' the space to be heated by the radiating system and comprising a easing containing a chamber through which the heating medium is supplied to the radiating' system, a control-valve mounted within said casing, so as to control the How oi' the heating medium IIO IZS

to the radiating systen1,'a second chamber, an exposed return-pme leadlng :from the radlating syetmn to said second chamber, mechanism mounted within said second chamber and arranged to operate said control-valve, and a thermestatie devme exposed to the temperature of vapor owlng lnto sind chamber l 'olrough said returmpipe and arranged to ac-

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