US915681A - Automatic cut-off for gas-burners. - Google Patents

Description

W.-H. K RUEGER AUTOMATIC GUT-OFF TOR GAQ BURNER8.

APPLICATION FILED JUNE 1-0, 1908.

INVENTOR Patented Mar. 15, 1909.

WILLIAM KRUEGER, OF WILKES-BARRE, PENNSYLVANIA.

AUTOMATIC CUT-OFF FOR GAS-BURNERS.

Specification of Letters Patent.

Patented March 1 6.,,1O9s

Application filed June 10, 1908. Serial No. 437,62.

To all iohom it mag/concern:

Be it known that I, IVILLI'AM -Wilkes-Barre, countyof Luzerne, and State ,of Pennsylvania,have invented a certain new and useful Improvement in Automatic 5 Cut-Offs for Gas-Burners, of which the following is a specification. j

My. inventionrelates to a .new and useful improvement in automatic cut oils for gas burners, and has for its object vto provide I an exceedingly simple andeflective device of this characterby means of which the gas may be automatically turned ofl-should the light by any meansbeextinguished.

1th these ends 111 view, this invention consists in the detailsof construct on. and

combination of elements hereinafter set forth and then specifically designated by theclaims'.

In order that those skilled in. the art-to which this invention appertains may understand how to make and use the same, I will describe its construction in detail, referring by letter to the accompanying drawing forming a part of this specification, in Whichi p Figure 1 is a longitudinal sectional view of my improved-automaticcut ofi. Fig. 2'

is a side elevation of a slightly modified form of my improvement, and,Fig. 3 is a side elevation of a still further modified form of my improvement.

In carrying out my invention as here-f embodied, A represents a gas burner so; roduce a central longitudinal l lirough. which the, gas passes formed as to opening Bt from the supply me to the tip to belighted.

C indicates a iorizontal opening passing through. that portion. of the burner in whi'ch is formed the opening B, andin this horizontal o ening is laced the valve rod D, having t 1e groove t formed thereon, which when in alincment with the opening B will allow the gasto pass through said opening B;

Findicates an opening in one end of the valve rod D, for the purpose hereinafter de scribed.

' of wire I, which is adaptedto slide up and down within theo eningF when the valve rod D is moved bac ward orforward.

I ll. Kiii nonn, a' citizen of the United States, residing at thermo'spring G in proximity to t e burner, ,this thermo' spring G will quickly expand, which will move the valve rod D until a portion of the groove E comes inalinement with opening B, when the gas will flow through said opening and ignite it andas j thethermo spring G expands, the o ening B will be opened wider allowing t egas to How more freely, thus producing a larger and brighter flame. When ,the' gas is flame is otherwise extin uishedwhile the gas is turned on, the cooling of the thermospring causes said thermo spring G to contract, thereby closing the opening B and )r'eventing the escape of gas. In practice I find that the closin ol" the valve is almost instantaneous and t at the differencebetween the high temperature of. the flame and the normal temperature of the, room is sogreat, that on extinguishing the flame the thermo spring contracts instantly;

In the device shownin Fig.2, I have opened all t e way, depending upon how far the ring J is placed upon the valve rod D, be-

will move the valve rod D, thus bringing the ring J toward the burner until it comes in been placed close to the end of the valve rod it will allow the burner to be 0 ened full, but

stem so that when it comes in contact with the burner it will only partially open the opening B, then only'a small flame would be given, such as is often left burning through the night, and should this flame in any way become extinguished, the gas would be shut ofi.

The device as when thegas burner is out of the reach of a man. In this one I provide an arm K secured to the burner, and to the outward end of this arm is pivoted the lever L, having the extension M formed on one end thereof, to the opposite end is secured a chain, a rod, or any other suitable appliance. When it is (lesiredto light a burner the chain N is pulled downward, which will pull that end of the i lever to which it is secured downward, thus turned oil to 'ext'inguish the flame, or a;

shown in Fig. 3. is to be used The operation of this burner is as followsi By holding a taper or match a ainst the placed on the end of the valve rod, opposite "spring, a tightfitting ring J which will allow I cause as the thermo spring Gexpands, it.

'90 contact therewith, and should the ring have,

should it be placed far enougi on the valve lUU . holding the burner open, allowing the lever L to return to its original position again be cause that end on which is formed the extension is longer and heavier than the opposite end, and should' the flame be extinguished the thermo spring will-instantly close the valve,thus cutting ofi' the flow of gas.

Of course I do not wish to be limited to the exact details here shown as-these may be verified within certain limits without departing from the s irit of lny'invention.

Having thus ful y described my invention what I claim is new and useful is 1. In combination with a gas burner hav- 7 mg 3])5111 of intersecting passages, a valve rod sliding in one of said passages, and having each of its ends projecting beyond opposite sides of the burner, an abutment to enga e said burner on one end of said rod, said opening therethrough and being formed at an intermediate point along its an annular groove, a spring of inverted J- ength with 1 outer face of said end of the shorter leg of the sprin 2. in combination with a gas burner having a pair of intersecting passages, a valve rod sliding in one of said passages, and hav- 1 g each of its ends projeqtin I beyond opposite sides of the burner, an a utrnent to enga c said burner on one end of said rod, said rod on its opposite end having a transverse opening therethrough'andbeing formed at an intermediate point along its length with an annular groove, a spring of inverted dshape located entirely on one side of said burner and having the end of its longer leg extending freely through said transverse opening of'the valve rod, the end of the shorter leg of said spring abutting said burner, and a band friotionally engaged about the exterior of said burner, and on the I l l i shape located entirely on one side of said i burner and having the end of its longer leg extending freely through said transverse o ening of thevalve rod, the end of the s orter leg of said spring abutting said burner, and a band frictionally engaged about the exterior of said burner and on the outer face of said end of the shorter'leg of the spring, an outwardly )rojecting arm adjacent the lower end 01 shaped lever pivoted to said arm at a point remote from the center of its longer leg, said mg the outer face of the shorter leg of the lever, said lever normally occupying an inclined position with respect to said burner. In testimony whereof, -I have hereunto afiixed my, signature in. the presence of two subscribing witnesses.

Witnesses OLm F. HARVEY, Jr., LEwIs M. LARNEnsaid burner, an L-- WILIJAM KRUEGER.

spring at the free end of its longer leg engagro on its opposite end having a transverse

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