US1024062A - Car-heating system. - Google Patents

Description

F. F. GOGGIN.

GAB. HEATING SYSTEM. APPLICATION FILED Imus, 1908.

Patented Apr. 23, 1912.

' INVENTOR l g 2/ Att y Y FEE git rrnur FRANK F. COGG-IN, ($33" NEW 1& Z1, ASEEGNQS) o assassin? (JG'MFANY, (3F 2033 1, N. iii, A CGE-PQELJEEQH EEABTELIG SYSTEM,

To aZZ whom it may concern;

Be itknown that I, FRANK a citizen-otthe United States, residing- New York, in the county of New York ant State of ETQVJ York, have invented new and F. Coociu ten 3, tion.

My invention relates to systems. and more particularly to a adapted for heating cars in railway ,in mjv prior Patents h'os. 66%,076 and. 783,422, ranted respectively oniiec. 1900 and Feb. 28, 1-905, I havedisclose" a heating system wherein from the air pump emp id to compress airfor the-fluid pressure res, is utilized for heating the cars in the train.

It sometimes happens, .should the steam pressure in the locomotive boiler become low,

of which the following is a y ,,.i esiiausi steam that the back pressure of the exhaust steam,

' which is necessarily caused by its use in the heating system, is sufficient to cause pump to no rly or quite stop running, and,

as a consequence, the .fiuid pressure in the main reservoir may become lower than desir-able. To obviate this ditlicult'y, means an provided, according to the second patent above mentioned, for automatically opening a free exhaust to the atmosphere from the pump exhaust, when the main reservoir pressure -falls below a predetermined degree, thusrelieving the pump of the hack pressure of the exhaust steam and thereby insuring the full operation of the pump to maintain the desired pressure in the main reservo1r. With this prior construction, however, in order to again connect the heating-system with the exhaust steam supply, itis necessary for the engineer to operate the controlline; valve by hand.

It is the main object of my present invention, therefore, to provide a simplified construction of this character wherein the conequipment for utilizing the exhaust steam from the air pump for heating the ears,

illustrating one form of my present invention applied thereto; and Fig. 2 a vertical section1of a valve device, embodying one form oi my invention for controlling the Specification of Letters Patent.

Application flied February 15, 1988. Serial 41435375.

the pump and for presteam from the heating exhaust steam from venting hack ticw of system.

According to Fig. 1 of the drawing, the car heating apparatus utilizes the erthaust steam from air pump 1, oi'the usual n KSiijfigJiTI-OH ror compressingair for use in the prince system, 1 air cylinder 3 of the pump being" connected hy a pipe 2 with a. main reservoir 4,'and having the'usuai pumpgovernor for controlling the steam siipply to the steam cylinder 3 of the pump through the steam pipe *4, the governor being subjdct to main reservoir pressiu'e oy Way of the pipe 8.

The steam exhaust pipe from the pump is connected by a pipe 10 with a reevap o- .ating drum, 11., from which is suplled to heat the cars of the train? 1 similar to that disclosed in my prior pat-' ents above mentioned. According to. one construction of my present invention Ipro- 'vide a valve device 16 for controlling an atmospheric exhaust from the pump exhaust pipe'9 and said device may comprise a valve 17, operated by a piston 18, subject on one side to the pressure of a spring 19 and on the opposite side to fluid pressure from the main reservoir at certain times. Said piston. being connected by'a pipe 20 to a pressure governor 2l,'which may he of the ordinary construction, having a diaphragm 22, subj ect on one side to the pressureof an adjustahle spring 23 and on the opposite side to main reservoir pressure by ivay of the pipe 24-. The diaphragm 22 governs a valve 25 which controls the admission of air from the main reservoir to the piston 18 of thee haust valve 1'2.

In operation, the pressure governor 21 is a s,- as, ieie;

The pe, 1G connected to a relief A ipe 12 inpressure isadjusted to the desired minimum degree of 11a main reservoir pressure, so that above that pressure the valve 25 is open and air is supplied front the main reservoir to the piston P 18, causing the same to close the valve 1'? :5 against the pressure of the spring 19.. The exhaust to the atmosphere is thus cut off, and the air pump l operates, the exhaust steam therefrom flows through the pipe to the reevaporating drum 1,1, whence the in steam is supplied for heating the cars.

tihould the boiler steam pressure happen to tail to a low point, so that the back pressure of the exhaust steam interferes with the full action of the pump or even causes the same to stop, the main reservoir pres sure may also fali,-but since the pressure governor closes the valve 25 as soon as the main reservoir pressure becomes reduced to a certain point, the fluid pressure in the pipe and on piston 18 reduces through the usual small vent port 85, so that said piston18 is shifted by the spring 19, open ing the exhaust valve 17 and permitting the pump steam exhaust to go to the atn'iosphere. The back pressure on the pump is thus relieved, and the pump at once starts into full action. The main reservoir pressure is thus brought up to the desired degree at which the pressure governor 21 is adjusted and thereupon causes the valve 25 to open and admit fluid to the piston 18, which then operates to close the exhaust valve 17. The exhaust steam is then diverted to the pipe 10 and the drum 11. Should the pressure of the exhaust steam rise above the degree at which the relief valve 13 is adjusted, the excess pressure is blown-oil, and iitthe pressure becomes less than the desired minimum degree then the pressure regulator 15 opens and admits live steam to the heating system.

When the exhaust valve 17 is open and the exhaust steam is passing to the atmosphere, in order to prevent the back flow of steam from the heating drum to the atmosphere, I. provide, according to the construction illustrated in Fig. 1., a valve device 26 which comprises a valve 2! for controlling communication trom the heating drum to 1 the pump exhaust pipe, and a piston 28 for operating said valve. Due side of the piston 23 is connected by a'pipe 29 with the pump exhaust outlet beyond the valve 17, and thus, when the valve 1'? is open and the pump is exhausting to the atmosphere, exhaust steam flows through the pipe 29 to the upper vside of the piston 28, thus operating the piston to close the valve 27, so that the steam in the heatlng drum 11 is prevented from flowing hack through the pipe 10 and escaping to the atmosphere.

In the construction illustrated in Fig. 2, I provide a valve device 30 comprising a double seated valve 31', adapted in one extreme position to close communication between the atmospheric exhaust and the exhaust pipe 9 and open communication from the pipe 9 to-the pipe 10, leading to the heating drum, and in the other extreme po- 7o sition to cut off the pipe 10 and open the atmospheric exhaust. The valve 31 may be operated by a piston 82, subject on one side to the pressure of a spring 3% and on the opposite side to main reservoir pressure through the pipe 20, when the valve 25 is open. With this construction it. will be seen that so long as the piston 32- is exposed to main reservoir pressure, the same Will be maintained in its outer posit-ion With the valve 31 30 closingthe atmospheric exhaust and maintaining communication open from the pump exhaust pipe 9 to the heating system supply pipe 10, but when the main reservoir pressure falls below the predetermined minimum degree the main reservoir pressure being out ch from the piston '32, the spring 34 shifts the piston and valve 31 to the inner position,

in which the heating supply pipe 10 is cut oii and the atmospheric exhaust is open, thus the valve device 30 performs the functions of both of the valve devices 16 and 26.

It will now be apparent that in pres entinvention I'have provided automatic means for controlling the exhaust steam heating system, requiring no attention on the part of the engineer, in the ordinary op eration thereof.

Having now described my invention, What I claim as new and desire to secure by Letters Patent is 1. In a car heating system the combination with a steam actuated air pump having an exhaust outlet to the atmosphere and a communication for supplying exhaust steam to the heating system, of valve mechanism governed by the pump pressure for automatically closing the atmospheric exhaust outlet, and operating'to open the exhaust outlet to the atmosphere and to positively close said communication to the heating system when the pump pressure falls to a predetermined point.

2. In a car heating system the combination with a steam actuated air pump having an outlet to the atmosphere for exhaust steam, and a communication for supplying exhaust steam to the heating system, of a valve device governed by the pump pres sure for opening and closing said exhaust outlet to the atmosphere, and means governed by the flow of exhaust steam to the atmosphere for closing said communication to the heating system.

3. in a car heating system the combina tion With a source of exhaust steam,,an atmosphere outlet therefor, and means of communication from said source to the heating system, of a valve device governed by the pump pressure for opening and closing 1 an atmospheric exhaust outlet, a reservoir into which said pump is adapted to'comof pressure in the reservoir for actuating said valve, and means operated by the flow or exhaust steam through said valve to the atmospheretor controlling communication from the exhaust steam outlet of-the pump to the heat ng system. g a

5. In a. car'heating system, the combination with a steam actuated-air pump having press air, and means for supplying exhaust steam from the pump to the heating sys-' tom, of a valve for controlling communication'from the exhaust steam outlet of the pump to the atmosphere, a movable abut ment operated by the reduction in reservoir pressure to a predetermined degree for 'voir into which said pump compresses air,

opening said valve, and means operated by the How of exhaust steam through said valve to the atmosphere for closingcommunication from the exhaust steamoutlet of the pump to the heating system. 1 1112. car heating system, the combina-. tion with: a steam actuated air pump having an exhaust steain outlct-to the atmosphere, 'areservohinto which said pump is adapted to-com 'iress'air, andmeans for supplying exhaust steam from the pump to the heating system, of valve means for controlling the flow of exhaust steam from the pump to the atmosphere and to the heating system, a movable abutment for controlling the action of said valve means, a spring acting on one side of said abutmenttcndmg to move samein one direction, and means subjectto reservoir pressure for controlling the admission of fluid pressure to the opposite side of said abutment.'

7. In a car heating system, the combinationwith a steam actuated air pump having an atmospheric exhaust steam outlet, a reserand a supply pipe for the heating system "tion through which exhaust steam connected to the steam exhaust. from the pump, of automaticmeans operated 'according to the degree of reservoir pressure for establishing coiiin'iunication from the steam exhaust-pf the pump to said supply pipe and adapted upon vthe reservoir pressure falling toa predetermined degree to close said communication and open the pump'exhaust to the atmosphere.

8. Ina car heating system, the combination with a sourceof exhaust steam, a pipe 1 adapted to establish comn'iunication fromsaid source to the atmosphere, and a supply pipe leading from the source of exhaust steam to the heating system, of a valve' device operating independently of the exhaust steam pressure for controlling communicationvth'rough said atmospheric exhaust pipe and fmeans operated by the flow of exhaust.

steam-upon-the opening of the atmospheric exhaust outlet for closing the communicais supplied to the heating system.

9. The combination with a steam opera-ted ail-brake system, and a steam operated train heating system adapted tobe brought into communication with and supplied by the exhaust steam from the said air brake systein, the said steam exhaust being open to an atmosphere oflower pressure thai that 'within the said steam heating system, of

llltlliS whereby the communication between they said systems is automatically e'liected' and broken as the air pressureiof the said air brake system rises-and falls, respectively.

10. T he combination of. a steam operated air brake system and a steam operated train heating system adapted to be brought into communication with and supplied by'the exhaust steam from the said air brake systom, the said steam exhaust also being open to the atmosphere, an automatic valve adapted to open and close the exhaust to the atn'iosphere when the air pressure within said air brake system falls below or rises above a certain predetermined degree, respectively, and an automatic .valve governing the said communication between the two systems, said last'named-valve adapted to open when the first named valve closes and to close when the first named valve opens.

In testimony whereof I have hereunto set my hand and seal.

FRANK F. COGGIN. [1,. s] Witnesses:

M. J. SHERIDAN, FRANCIS .CONDON.

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