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Publication numberUS795044 A
Publication typeGrant
Publication dateJul 18, 1905
Filing dateFeb 25, 1905
Priority dateFeb 25, 1905
Publication numberUS 795044 A, US 795044A, US-A-795044, US795044 A, US795044A
InventorsJacob F Kraus
Original AssigneeJacob F Kraus
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 795044 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 795,044. PATBNTED JULY 18, 1905. J. F. KRAUS.



@Qi/Nedam r l NITED STATES Patented July 18, 1905.v

PATENT erica.


SPECIFICATION forming part of Letters Patent No. 795,044, dated July 18, 1905.

.Application filed February 25,1905. Serial No. 247,288.

To all whom it may concern:

Be it known that I, JACOB F. KRAUs, a citi- Zen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification, reference being' had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in fuel-burners, and relates more particularly to that type of burner employed for burning gas as a fuel.

The object of the present invention is to provide a burner by the aid of which the fuel may be economically used and to provide novel means for thoroughly mixing or commingling the gas and air to increase the combustion.

Another object of this invention is to dispense with the use of jets, nipples, and the like and to feed the gas into the burner spirally at any desired angle to the radii or axes of the mixing-chamber or air-chamber.

Vith the above and other objects in view the invention finally consists in vthe novel construction, combination, and arrangement of parts, which will be hereinafter more fully de-A scribed, and referring' to the drawings accompanying this application like numerals of reference designate corresponding parts throughout the several views, in whichA Figure 1 is a longitudinal sectional View of my improved burner. Fig. 2 is a longitudinal sectional view of the combustion-chamber of my improved burner, and Fig. 3 isa vertical transverse sectional view of the burner.

The present invention relates particularly to feeding the gas into the burner at an angle to the axes or radii of the mixing-chamber, and while l will hereinafter describe gas as being fed into the burner at various angles I find in practice the best results are obtained by spirally feeding the gas into the mixingchamber. To put my invention into practice, 1 provide a tubular body 1, open at both ends and receiving air at its end 2, the amount of air admitted being controlled or regulated by any desired means that l may employ in connection with my improved burner. This body is provided with a plurality of circumferentially-arranged openings made around the body. The respective rows of openings 3, 4, 5, and 6 are for admission of gas to the mixing-chamber. Each opening is made at an incline through the tubular body, whereby the gas admitted through the openings will be projected on a tangent, as best seen in Figs. 1 and 2 of the drawings, thus imparting a spiral or angular movement to the volume of gas, which movement is continued by the column to the point of ignition.

The tubular body is provided with a plurality of interior annular ribs 7, 8, and 9, the rib 9 being provided with a tapering' surface 10. These ribs are adapted to support an air-tube 1'1, having a tapering end 12, which is adapted to engage the tapering surface 10 of the rib 9. The mounting of the tube 11 within the combustion-chamber produces two annular compartments 14 14C, into which g'as is admitted by pipes l15 15, secured in the fianged openings 16 16 of the tubular body.

The referencenumeral 17 designates a burner-body which is preferably tubular in form and provided with a tapering end 18. The tubular body 1 is retained within the burner-bod y by the screw-threads of the pipes 15 15, which pass through openings 19, formed in the cylindrical portion of the burner-body. This construction provides an annular airpassage 2O around the tubular body 1, and an air-passage is created centrally of the burnerbody by the air-tube 11.

It will be evident from the foregoing description that when gas is admitted to the compartments 141C the same is tangentially discharged into the air-passage 20 and when air is being admitted at the air-inlet end 2 of the tubular body the draft of air will carry the gas forward into the tapering end of the burner-body. The discharge of the gas tangentially within the air-passage 20 causes the same to thoroughly commingle with the air, and when it engages the air passing' through the tube l1 a further commingling is accomplished which provides a perfect mixture of the air and gas, and consequently a perfect combustion at the point of ignition.l

Althoughl have herein referred to the mem- IOO ber or part 1 as being tubular, yet I do lnot Wish to be understood as confining mysehc to the specific use of a tubular device, as it will be readily apparent that this part might be of other than circular form in cross-section.

While I have herein illustrated the preferred manner of constructing my improved burner, it is obvious that various changes may be made in the details of construction Without departing from the general spirit and scope of the invention.

What I claim, and ters Patent, is-

1. The combination of a-cylindrical burnerbody having a tapering discharge end, a tubular body mounted within the burner-body, With gas-inlet pipes extending through the burner-body and connected to the tubular body and serving to suspend the latter Within the burner-body, said burner-body ,provided with a plurality of discharge-openings. interior annular ribs carried by said tubular body, andan air-tube fitted Within the tubular body and engaging said ribs, substantially as described.

2. Ina fuel-burner of the type described, a burner-body having gas-inlet pipes extending through the Wall thereof, a body suspended desire to secure by Let- Within the burner-body from said pipes, open at both ends, and having gas-discharging oriices arranged at an angle to the radii of the body, and gas-receiving chambers Within said body into which the gas is discharged from the inlet-pipes, substantially as described.

3. In a fuel-burner, a burner-body having a gas-inlet pipe extending through the wall thereof, a body suspended within the burnerbody from said pipe, open at both ends, and having' gas-discharge orices, and a gas-receiving chamber Within said body into which the gas is discharged from the inlet-pipe.

4. In a burner of the type described, a burner-body, a gas-receiving body located Within the burner-body, and having a gas-.receiving compartment, said `gas-receivingbody having discharge-orifices arranged at an angle to the radii of the body, and said gas-receiving body being of rless diameter than the burnerbody to form a mixing-chamber around the gas-receiving body, su bstantially as described.

In testimony Whereotl I affix my signature in the presence of two witnesses.

yJACOB F. KRAFUS. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4625916 *Jul 12, 1984Dec 2, 1986Lechler Gmbh & Co., KgCylindrical inset for a binary atomizing nozzle
US4874560 *Jun 30, 1989Oct 17, 1989Oxidyne CorporationApparatus for effecting selected patterns of fluid flow
US5518395 *Sep 9, 1994May 21, 1996General Electric CompanyEntrainment fuel nozzle for partial premixing of gaseous fuel and air to reduce emissions
US6517010 *Sep 11, 1997Feb 11, 2003Aerostar Coating, S.L.System for injecting gas into a detonation projection gun
Cooperative ClassificationF23D11/10