US213335A - Improvement in gas-regulating burners - Google Patents

Description

J. J. KBNNBVAN. `Gas-RegulatingBurner.

` No. 213,335. Patented'm'ar. 18,1879;

UNITED STATES PATENT OFFICE.

JOHN J. KENNEVAN, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN GAS-REGULATING BURNERS.

Specification forming part of Letters Patent No. 213,335, dated M arch 18, 1879; application filed January 25, 1879.

To all 'whom it 'may concern Be it known that I, JOHN J. KENNEVAN, of Boston, county of Suli'olk, and State of Massachusetts, have invented an Improved Automatic 'Pressnre Regulating Gas Burner, of which the following is afull, clear, and exact description, reference being had to the accompanying drawings, making part oi' this speciiication, in which- Figure l is a vertical section through the center of a gasburner constructed in accordance with my invention. Fig. 2 is a perspective view of the same, with the upper portion of the shell and its tip removed.

My invention has for its object to provide a gasburner which, after being' adjusted to burn a given quantity of gas, will regulate itselt` automatically, so that the amount of gas consumed per hour will remain the same without regard to the pressure in the street-pipes or Athe size of the oriiice at the tip of the burner through which the gas escapes; and my invention consists in certain details of construetion, as hereinafter set forth and specifically claimed.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which Il have carried it out.

In the said drawings, A represents the shell of a gas-burner, which is formed of two portions, a

I), screwed together at c, the upper portion, b, being provided with an ordinary removable tip, d. Across the top of the lower portion, a., ot' the shell extends a leather diaphragm, B, which is stretched over a vertical iiange, e, and secured thereon by means of a ring, j', forced over it. This diaphragm serves to divide the interior oi' the burner into two separate chambers, g h, which communicate with each other.through a short tube, ',`which is securedto the diaphragm by means of screwnuts 7c 7c on its opposite sides, the bottom of the tube i being open, and the portion above the diaphragm being provided with one or more lateral apertures, l, through which the gas from the chamber g is free to iioW into the chamber h, and thence to the tip d, where it is burned. l

Within the lower end of the burner is screwed a short tube, G, which extends up into the chamber g, and at the top oi' this tube is formed a conical aperture, m, the sides ot' which constitute a seat for the conical valve a, the vertical stem p of which passes up through the tube e', at the upper end of which is formed a screw-thread, with which engages a corre spon ding thread cut on the outside of the stem p, so that by turning the latter the position of the valve with respect to its seat, and the consequent size of the inlet-aperture m, can be regulated to vary the amount of gas consumed, the diameter of' the stem p being less than that of the interior of the tube i, so as to leave a space between them for the free passjage of the gas from the chamber g to the chamer h.

If desired, the diaphragm B may be weighted by using one or more washers, 1, which are slipped over the tube i, and serve to depress the diaphragm quickly when the pressure is removed from its under surface.

The valve a having been adjusted to cause l the burner to consume a given number of feet of gas per hour, (which can be determined by a suitable test,) the stop-cock (not shown) is opened and the gas flows up through the tube C and conical aperture 'm into the chamber g, and up through the tube i into the chamber 71 whence it passes directly to the tip d., and when lighted the pressure of the gas on the under side of the diaphragm is such that the valve u will be maintained at such dist-ance from its seat as to admit the exact quantity of gas desired; and should the pressure of the gas in th e street-m ain increase, the ad di tional pressure upon the under side of the diaphragm B will raise it and the valve u, so as to contract the size of the inlet-aperture m sufficiently to allow of the passage to the tip d of only just the predetermined :number of feet of gas per hour; and any diminution of the pressure of the gas will cause a proportional descent of the valve a, and consequent enlargement ot' the inlet-aperture to a size sufficient to admit exactly the same number of feet of gas per hour, as before; and thus, after the valve a is once adjusted, there will bc no variation what ever in the quantity of gas burned in a given time until a new adjustment is effected, whether the pressure in the gas-pipes be more or less, or the size of the outletoritice where the gas is burned bc increased or diminished, a burner thus constructed being well adapted for street-lamps, where it is Qf great importance to know that a burner, after being once.

adjusted for a given quantity of gas per hour, cannot by any possibility be made to consume a greater quantity, even it' the tip should be blown out or one with a larger orifice be substituted, or the pressure of the gas should be increased.

Byconstructin g the burner with two separate gas-chambers, communicating with each other as desired, the gas is allowed to come into contact with the upper as well as the under sur face of the diaphragm, which is a great advantage, as the oil contained in the gas is thus allowed to'act equally upon both surfaces of the leather diaphragm, and servesv as a preservative to keep it soft and pliable and prevent it from cracking, and thus becoming useless, as is liable to occur where the gascomesv into contact with the under side only of the dif aphragm, as heretofore, in which case the upper surface soon becomes dry and cracked, when the diaphragm must be replaced by a newl one.

The above-described burner, which is of eX- ceedingly simple construction and is not liable to get out'oi' order, presents the further advantage that if thefdiaphragm'should breakor give away from any cause the gas will' pass directly up to the tip, as in a burner of ordinary construction.

It is evident that my. inventionI may be applied to automatic pressure-regulators for use in connection with a number of burners without departing from the spirit of my invention.

I amaware that a valve operated by a iiexible 'diaphragm through the medium of the gas pressure is not new, and hence I make no claim thereto; but

What I claim as my invention is- -Inf combination with a gas-burner or pressure-regulator having its interior divided by a ileXible diaphragm into two separate gas-chambers, g h, the tube il, attached to the diaphragm and forming a means of communication be twecn-the-two gas-chambers, and the valve a, having its stemmade adjust-able within the tube t', through which it passes, ally construct ed to operate substantially in thefinanner and.

for the purpose described.

Witness my hand this 20thday of January,

JOHN J. KENNEVAN- In presence of- P. E. TEscHEMAcHER, W. J. CAMBRIDGE.

It is herab)l certified that the word occurring in the rst line nf the claim, between the words in :1nd combination of' the printed specification herein contained, is notfunnd in th original specicatin on file in the Patent O'ce.

April 3, 1379.

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