US1705718A - Locomotive fire box - Google Patents

Description

Match 19, 1929. 4 p, 1 CONLEY 1,705,718

LOCOMOTIVE FIRE BOX March 19, 1929. P. .1. coNLEY 1,705,718

LocoMoTIvE FIRE Box Filed Oct. 19, 1925 2 Sheets-Sheet 2 o o o 5 o o Patented Mar.` 19, 1929. l

'Unirse 4STATES PATENT y"olrl'iczlz; ,I

v PATRICK par. coivLnY,y or GAL'vEsroN, TEXAS.

' LocoMoTIvE FIRE Box.

Applcationvled Qctober 19, 1925. ySerial No. 63,37"7 j Thisinvention relates to new and useful improvements in a locomotive rebox'.

One object of the invention is to provide a boiler having an improved type of lire box and adapted for general use, and more par ticularly for application to locomotives whereby a more efficient utilization of the the-furnace from the'burner.

A still further feature of the invention re.- sides in the provision of a novel type of boiler furnace equipped with means for controlling the supply of air thereto to the end that said furnace may be completely closed when the fire is extinguished to retain the heat in the furnace and to prevent sudden changes 'of temperature and the consequent injury to the furnace caused thereby.

With the above and other objects inl view this invention has particular relation to cer-V tain novel features of construction, operation and arrangement of parts, an example of which is given in thisspecification and illustrated in the accompanying drawings,

wherein y u Figure l shows a longitudinal sectional view of the improved type of boiler, equipped with a novel type of oil burning furnace, and Figure 2 shows a cross sectional view thereof taken on the line 2 2 of Figure 1. Y

leferring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 designates the boiler as a whole which is provided with the furnace 2.- In the type shown in Figures 1 and 2 the furnace is supplied with fuel from the burner 3, which is anchored to the front wall thereof, and

the front side of the furnace. This chamber has an air inlet 5, which `is controlled by the the furnace forming a part of the bottom of which is enclosed in the chamber 4:, adjacentv ysaid furnace.4 The-se walls are hot and'heat the air passing through said flue before it enters the furnace.

The air for the furnace enters the inlet 5 and passes thence upwardly into the flue .7, at one end, and thence valong said iiue to its other end, and thence downwardly through the passageway 8 into the main air liuc 9` which enters the furnace 2 from beneath. j vThe boiler has the usual smoke stack 10 near its front endin front of the boiler tubes 11. There is a vapor line 12, one end of which projects into the front end of the boiler, and terminates in the smoke boX adjacent the rsmokestack, and whose other end enters the main air flue k9. v The furnace draft will create a suction through the line 12 but a nozzle pipe 12 maybe connected with a convenient steam line of the boiler and its discharge end turned into theupper'end of the vapor line so that a forced draft may be thereby created through said line 12, if desired. v

A part of the products of combustion will pass out of the smoke stack, but a considerable portion thereof will be diverted through the vapor line 12, and returned to the furnace for further consumption. These hot vapors f will also mingle with the fuel being ejected from the burner resulting in a more complete combustion thereof,

Y yThe oil line 13, which supplies oil to thel burner 3 has a control valve 14, which is con` trolled by theV valverod 15. Thisrod has a lateral arm 16 andthe stem of the valve, or shutter, 6 has an arm 17, fixed thereto, and

the arms 16 and 17 are connected by a link 18 to the end that the shutter 6 will be opened and closed simultaneously with the corresponding movements of the valve 14;, and the v 1 airsupply controlled to meet the requirements of the fuel supply. When the fuel is completely cut olf and thel fire'extinguished the air inlet will also be completelyclosed to prevent the inlet of cold drafts of air and a too sudden cooling of the interior of the fur-.

nace.

What I claim is v 1*. In a boiler having a furnace and having'a chamber adjacent the front end of the furnace and a main air flue entering the furnace beneath the chamber, said chamber being provided with an air inlet, a valve controlling said inlet, a transverse air iiue above said chamber ywhose top and side walls lie adjacent the furnace, said inlet entering said transverse flue at one end and there being a passageway leading downwardly into the main air flue from the other end oi said transverse flue, a vapor line leading from the front end of the boiler and terminating in the main air flue of the furnace.

2. In a boiler having a furnace at one end and a smoke box at its other end and tubes between said furnace and smoke boX, a main l air flue entering the forward end of the furnace, a chamber above said main air flue having an air inlet, a shutter valve controlling said inlet, a transverse flue above said cham-V ber one end of which communicates with the chamber there being a passageway connecting the other end or' lthe transverse lue with said main air inlet and a vapor line leading fromV the smoke box of the boiler in front of said tubes and entering the main air inlet.

In testimony whereof I have signed my namel to this specification.

PATRICK J. CONLEY.

Images