US1257374A - Gas-generating apparatus. - Google Patents

Description

1. w. Mc FARLAND. GAS GENERATING APPARATUS. APPLICATION FILED OCT. I6. 1915- 1,257,374. Patented Feb. 26, 1918.

2 SHEETS-SHEET I.

' INVENTOR J. W. MCFA'RLAND.

GAS GENERATING APPARATUS.

APPLICATION FILED OCT. 16. ISIS.

Patented Feb. 26, 1918.

- 2 suns-swan 2 IIIII JIIIII I ATTORNEY z JFAMES Wl. MOFABLAND, 0F; BROWNWOOD, TEXAS.

. GAS GENERATIN G .APPARATUS.

. Specification of-.I.etters.Pa tent. .Patented F.eb ;26 1918,

-Application filed October 16,4915.-' Seria1 No :56;166.

To all whom it may concern:

Be it known that I, J earns W. MGFARLAND,

citizen of the United States residing at -Brownwood, in the-county ofrBrown. and

State of Texas;have invented CGItZtlH-IIBW and useful Improvements in Gas-Generating Apparatus, of which the following is a speciiication.

This invent-ionpertains tonewand useful in'iprovemcnts in gas generating apparatus.

Itist-he-object of "my'invention to generate gas-under conditions which will--prac tically eliminate-"soot and to-providemeans for so doing. However one of the vital features of the invention is to provide means for taking care ofthe expanslon of the gas and air so that the tankneednotbe elevated more than a couple offeet :and whereby a steady flame-is-had and a unifornr heatsustained for a long-period. .'A further object is to eliminate the usual fine- 'a-djustments of the oil feed andby provision of the expansion feature or what I- term-an air cushion to take care of a varying oil feed with equally good results.

lVith the above and other objects in VlBW the invention has relation to certain novel features of construction and operation, an example of which is described in the following specification and illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevation of an apparatus embodying my invention, and

Fig. 2 is a plan view of the same.

In the drawings the numeral 1 designates the feed pipe of a generating apparatus. At the outer end of the pipe 1 a controlling valve 2 is connected and a supply pipe 3 extends from the valve to an oil storage or supply tank 4 which when used with this invention needs only to be elevated sufliciently to get a proper feed. It has been found that about two feet above the valve is the proper height for the tank.

The feed pipe 1 is connected at its inner end to a cross pipe 5 at right angles thereto and the pipe 5 is connected with a return pipe 6 parallel with the pipe 1. The pipe 6 has connection with a central pipe 7 disposed between and parallel with the pipes l and 6. The pipe 7 extends toward but terminates short of the cross pipe. The pipes 1, 5, 6 and 7 are all disposed in the same horizontal plane and constitute a generating element which I have designated by the letter A, and which has the general form 1. of a coil. I-lowever Iprefer to have this-element elongated sufiiciently to have .its ends farenoiigh fromzthe flame to-maintaim them 'at a: slightly lower temperature *a nd' thus a retard-to a certain extent the flow. of thevgas.

: The pipes ust described may 'be' filled" with *small wires as-indicated and as 1s-common 111 5118 art.

pipe 8 depends from the inner--end of the pipe 7 or -generatingele1uent and-is connected at itslower-"end to a lIOllZOlliZ'cIl pipe or OOII'lbLlSUOH GlQHIGHt'9*Wl110l1 "underlies the pipe 7. -Just here I=w1sh t0'QlllPllil'SlZGifilld importance of the distance at which the pipe 9 is located from'thegenerating element. I

have found that inall the kerosene burners I have inspected the burner or-combustion pipe-is placed too close to the-generating elen1ent-and a great amount of-so'ot ishad as well as other-bad effects. By experiment I learned that -the;.gas-must be "liberated at a point far enough from "the generating" ele- --ment to permitv a-propermixture with the air at atmospheric pressure to afford a .com-

'plete combustion before the' generating ele ment is reached by the flame. In all the burners I inspected the gas was liberated at a point not over three inches below the generator or generating element and I found that this i too close. Experiments were made until a perfect combustion was obtained at seven inches. Where soot was present at less than seven inches, it was elimi nated at that distance and an efficient clear blue flame was attained.

Another point I found by experiment was that the burner gave better results with the generating element A placed directly against the bottom of the vessel to be heated and in Fig. l the said element is shown disposed against the bottom of a boiler 16 which is inclosed by the jacket 17. After operating this burner for several hours an inspection showed no soot on the boiler. Under the pipe 9 a heating pan 11 is disposed into which the oil is run from the usual port in pipe 9 to start the burner in the usual manner. The end of the pipe 9 is closed by a cap 10.

In operating kerosene oil burners more or less trouble has been experienced due to the rapid expansion of the air and gas, which causes the oil to stop feeding and often results in explosions. Further the maintaining of a regular flame has been difficult and considerable adjusting of the controlling or feed valve has been necessary. I have discovered that by connecting a dead air column or air cushion preferably at one end of the generating element, that the ex pansion is taken care of and a regular flame is had. Further where it was necessary to elevate the supply tank eight or more feet I operate my burner with the tank elevated only about two feet. The gas expands against the air in the dead air column and does not back up into the feed pipe or tank; further it seems to form a governor or regulator and takes care of undue pressure.

In carrying out this feature a T-joint 12 is connected in the pipe 5 as shown and a short pipe 13 is directed outwardly therefrom. The pipe 13 has its outer end connected with a vertical pipe member 14 which I have shown jointed for convenience. While this pipe may be of different lengths and may assume other shapes it must be airtight and I have shown its end sealed by a cap 15. It has been found that if a small leak occurs in the pipe or in any of its connections failure will result and the pipe will accumulate oil, while the burner will cease to burn. The dead air in this pipe forms a cushion against which the gas expands so there is no backing up in the pipes 1 and 3. It is important that .a portion of'this air pipe be sufliciently remote from the burner to remain at a considerably lower temperature otherwise the cushion is lost. It is quite obvious that the gas expanding into the air pipe or against the air column formed by said pipe, will more or less compress the air and in this way establish the cushion which will be flexible enough to act as a pressure regulator for the gas.

This invention is presented as including all such modifications and changes as properly come within the scope of the appended claims.

hat I claim, is:

1. The combination in a kerosene oil burner of a generating element, a burner member under the generating element, and means for providing a dead air column having communication with the generating element in advance of the burner member outlet.

2. The combination in a kerosene oil burner of a feed pipe, a controlling valve at the outer end of the feed pipe, a generating element at the inner end of the feed pipe, a sealed dead air pipe connected with the generating element, and a burner element disposed under the generating element, said dead air pipe being disposed at a point outside of the heating zone of the burner, whereby said pipe is maintained in a relatively cool state.

JAMES W. MoFARLAND.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. (3.

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