US1165932A - Locomotive fire-box. - Google Patents

Description

F. A. ALLINGER.

LOCOMOTIVE FIRE BOX.

APPLICATION man Auw. 1914.

1,165,932. Patented 1m28, 1915.

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ldellfflllll'flf FRANK A. ALLNGER, OF LOS ANGELES, CIJFORNIA, ASSIGNR F ONEAHALF TO l CHRIST VDLZ, l LOS ANGELES, CALIIfT'G-NI.

LOCMOTWE HERE-BOX.

Patented Dec. 28, 312th.

Application 'tiled .August 5, 1914:. Serial No. 855,126.

' o all whom t may concern Be it known that l, FRANK A. Ammann, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Locomotive Fire-Box, of which the following is a specification.

This invention relates to air supply pans for oil burning engines.

The object in general of the invention is' to provide an air supply pan for an oil burning engine with means for heating the air thoroughly before it enters the engine fire box and for distributing the air uniformly within the fire box, thus insuring a more thorough mixture of the air with the oil fuel constituents and a more uniform and complete combustion of said mixture, in the engine fire box than can be attained in the oil burning engines now in use.`

Other objects will appear hereinafter.

`ltefmring to the drawings: Figure l is a longitudinal section of an enOine boiler, fire box and air supply pan, the air supply aan beinO shown in the form of mv inven-` t o tion. Fig. 2 is an enlarged transverse vertical section of my improved air supply pan taken on line u32-n2 of Fig. l. Fig. 3' is a detached plan view of my improved air supply pan. Fig. -l is an enlarged plan view of one of the air supply pan lining bricks. Fig. is an enlarged side view of said brick.

My improved air supply pan is particularly adapted for use on oil burning locomotives and in the drawing are shown a locomotive boiler l and lire box 2, to the bottom of which fire box my improved air supply pan is attached in the manner hereinafter described. lll/ly improved air supply pan comprises an upper receptacle 3 and an air chamber 4, located directly below said recep tacle,y said chamber having Aan air inlet 5. The walls of said chamber and receptacle are so arranged as to form air spaces 7 therebetween, for the diffusion of the air in the air chamber, which is controlled by door 6. rlhe wall 8, of receptacle 3 is inclined slightly and is provided with a plurality of perforations 9, which provide communication from the air spaces 7 to said receptacle. rlhe air supply pan has flanges 10, provided with holes l1 through which bolts l2 are inserted and screwed into the lower extremities 13 of the walls of the fire box 2, for attaching the air supply pan in position directly below the fire box. The receptacle 3 is lined with fire brick 2O and 2l, which may be laid with their wide sides against the wall S inasmuch as said wall is inclined only slightly. The lire brick are provided with perforations 22 and rest over the perforated portion of the receptacle wall S while the brick 21 are the ordinary plain fire brick. rlhe fire brick 2O are provided with grooves 25 in their lower faces which grooves provide communication between the perforations 9 in the receptacle wall 8 and the perforations 22 in said brick. Through the forward wall of the air supply pan receptacle '3 projects an oil fuel nozzle 30.

lt will be noted that the air supply pan is of considerably less length than the receptacle 3 and that the former extends under the latter and entirely across the same adj a cent the rear end thereof. The walls of the receptacle are only perforated over the air supply pan and therefore the air entering the receptacle through these openings does not come into contact with theV fuel entering through the nozzle 30 until said fuel has had a chance to move some little distance away from the forward end wall of the receptacle. This is an important feature since it prevents the intense heat of combustion playing directly against the fir brick at the rear end of the receptacle. It is also desired to call attention to the fact that the fuel when it enters the receptacle 3 is traveling in an opposite direction to the air coming through the perfor-ations 22 and moving toward the re tubes and therefore a thorough mixture of the two constituents takes place.

rlhe operation is as follows: Air is admitted into the chamber Ll upon opening the door 6 which allows the air to flow into the chamber through inlet 5. From the air chamber' Ll the air iows through the perforations 9 in the receptacle wall 8 into the grooves of the lire brick 20, through the perforations 22 in said fire brick, and into the air supply pan receptacle 3. Oil fuel is injected into the receptacle 3 through nozzle in the usual manner and when the oil has united with the air in the receptacle, it is ignited in the fire box and heat thereof heats the water in the engine boiler l in the usual manner for the production of steam.

The circulation of the air through air spaces 7, perforations 9, in receptacle wall 'in complete combustion of the oil fuel and inthe generation of heat of the highest intensity. The complete combustion of the oil fuel moreover, effects a considerable saving in the amount of fuel used per unit of work, and does not allow the formation of carbon and the deposit of soot in the fire box and air supply pan.

What I claim is:

1. An air supply pan for engine lire boxes having a pair of slightly inclined downwardly converging walls, an air chamber formed under said receptacle adjacent the rear end thereof and extending entirely across the receptacle, said air chamber having downwardly converging side walls, said side walls being connected at'their upper edges to the bottom of the receptacle and diverging from the walls of the receptacle, the walls of the receptacle being perforated above the air chamber and being imperforate in advance of the air chamber, means for admitting air to the` air chamber, means for ejecting fuel into the receptacle and fire brick covering the walls of the receptacle, said re brick being formed with perforations communicating with the perforations formed in the rear end of the Walls of the receptacle.

2. An air supply pan of the character described, comprising a receptacle having slightly inclined downwardly converging side walls, an air'chamber under said recep tacle and having downwardly converging side walls connected along their upper edges to the side walls of the receptacle near their outeredges, those portions of the walls of the receptacle which extend over the air chamber being perforated, perforated lire brick covering the perforated portions vof the walls of the receptacle, said fire brick being provided with channels which establish communication between the perforations in the walls of the receptacle and the'` Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patents, Washington, D. C.

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