US825892A - Regulation of liquid-fuel burners. - Google Patents

Description

PATENTED JULY 1'7, 1906.

T. GLARKSON.

REGULATION OI LIQUID FUEL BURNBRS.

APPLICATION FILED AUG. 22, 1904.

2 SHEETS-SHEET l.

HZ, T O @QQ N PATENTED JULY-17, 1906.

T. CLARK'SON.

REGULATION OF LIQUID FUEL BURNERS.

APPLIOATIOE FILED AUG. 22, 1904.

A. Q. I

2 SHEETS-SHEET z.

THOMAS CLARKSON, OF OHELMSFORD, ENGLAND.

REGULATION OF LIQUID FUEL BURNERS- Specification of Letters Patent.

Patented. July 1'7, 1906.

Application filed August 22,1904. Serial No. 221,776.

To all whom it may concern.-

Be it known that I, THOMAS OLARKsoN, a subject of the King of England, residing at Chelmsford, England, have invented certain new and useful Improvements in or Relating to the Regulation of Liquid-Fuel Burners, of which the following is a specification.

This invention relates to the regulation of liquid-fuel burners, and has for its object to enable the regulation to be effected automatically and also when desired by hand, thelatterbeing possible without in anyway affecting the automatic mechanism.

The mechanism forming the subject of this invention is intended chiefly for use with liquid-fuel burners in which both the size of the flame issuing from the burner and the amount of fuel are simultaneously regulated; but the invention is also applicable to other forms of burners.

According to the present invention the control of the simultaneous movement is eifected automatically by the pressure of steam in the generator heated by the burner, this steam acting upon a piston against the pressure of an adjustable spring. Between the piston and its rod and the burner-regulating mechanism is disposed a direct but yielding connection, the arrangement being such that when the pressure of steam forces up the piston against the action of the spring the movement is imparted to the mechanism controlling the burner, and on account of the yielding connection no jamming can occur, and, further, the burner -controlling mechanism may be moved by hand without affecting the automatic movement of the piston.

In order to enable the burner to be controlled by hand, the hand-operated device is connected to the controlling mechanism and a yielding connection is disposed between the hand-operated device and the automatic regulator.

The details of the above combined automatic and hand controlling mechanism may be varied in accordance with requirements, and the invention will be described in its preferred form as applied to a burner wherein there is employed a needle for controlling the fuel-orifice and a cap which controls the size of the flame, these two parts being moved simultaneously.

Figure 1 is an elevation, partly in section, of a preferred form of burner having the present invention applied thereto. Fig. 2 is an end elevation, artly in section, of the same.

A is the yie ding connection between the automatic controlling mechanism B and the burner D, and C is the hand controlling mechanism. a

The burner D has a fuel-chamber D, at one end of which is situated the fuel-inlet nozzle D the opening of the nozzle being controlled by a needle D to which is attached a spring D At the op osite end of the fuelchamber is disposed t e nozzle D, through which the combustible mixture issues, the outlet being controlled by a cap D mounted on a spindle D and controlled by a lever D. The fuel is heated by the flame issuing from the nozzle D", the coil D through which the fuel passes to the nozzle D being situated above the flame-orifice, as shown. The lever D is pivoted at d to a stationary support and has a forked end (2 engaging with a collar on the end of the spindle D to which the cap D is attached.

The automatic controlling device B is in the form of a piston-regulator, consisting of a cylinder B, in which is situated a piston B the rod of which is connected to a piece B, having a projection of semispherical form which rests in a groove or socket in the piston B Beneath the piston B is attached an elastic or flexible cup B, through which extends a stud b, and the cup B is retained in position by a nut b on the stud b and the washer 12 Between the member B and cross-piece B through which the piston-rod .13 passes, is disposed a coil-spring B against which the pressure in the chamber B", which is situated between the cup B and the lower end of the cylinder, has to act to operate the controlling mechanism and vary the flame.

The automatic controlling device B is connected to the nozzle-controlling mechanism and also to the flame-controlling mechanism, so as to simultaneously vary both the supply of fuel to the burner and the quantity of combustible mixture, and therefore the size of the flame issuing therefrom.

The piston 13 is acted upon by the steampressure which enters the chamber B by the pipe B The upper end of the rod B passes mec n through an opening in the cross-piece B, which is connected by links B or other appropriate mechanism to the lever D and also by suitable connections to the needle D When pressure of steam forces up the piston against the action of the spring B, the movement is imparted to the mechanism controlling the burner through the cross-piece B and side links 13. the piston-rod B and the cross-piece B is direct, but yielding, so that no jamming can take place nor the mechanism be strained should the,.steam pressure on the pistonbe higher than is necessary to close the fuel and flame openings, V This yielding connection is oflimetalfand in the form shown comprises two springs A A one end of each of which bearssagainst a sleeve B having a central enlargement between which and the ends of the springs are disposed collars A A The opposite ends of the springs bear, respectively, againstthe collars or nuts A A on the pistonrod, andthese nuts also hold the, sleeve B in position and cause it to move with thepiston rod. The enlargement on the sleeve B lies lwithin an opening or eyein thecrosspiece B so that when the piston-rod rises or. falls it carries with it the cross-piece B,

which, as above stated, is connected with the links B 2, attached to the. burner-controlling lyVhen steam entersthe cylinder of the regulatorbelow the piston, the rod B is forced upward, causing ,the-nut A thereon to compressthe, spring A against the. washer A I which bearing on the bridge-piece B raises this and causes the links B to act on the,

burner 7 controlled mechanism. Similarly, whenthe pressure is withdrawn the pistonroddescends under the action of the spring B7, causingthe nut A on the rod B to compress, the spring A against the nut A forcing the bridge-piece 13 down and again causing the links to act on the burner controlled mechanism. The same operation takes place when the lever O" is operated by hand.

order to enable the burner to be con-- trolled hand suitable hand controlling mechanism is attached to the side links B This hand. controlling .meohanism C- comprises conveniently a lever C, pivoted .at c to a notched quadrantIP, over which it can move andwith which a springor drop catch c oii the lever, o eng e At its lower end the leyer C has acrank C to which is pivoted one end ofa link C the other end of which is pivoted to an extension of the links .B.,

which turn are connected at their upper endsby a bar-B I ,The yielding connection between the side links and the piston of the regulator allows the.hand.,controllingmechanism to be operated independently of the automaticcon The connection between thus insure their being order at all times. The hand-operatedmech:

trolling mechanism, as it is only necessary when it is desired to raise or lower the flame of the automatic controlling mechanismia It is also possible by means ofthehand control to move the needle and cap. oftheburner and" free. and inworking' anismcan be disconnectedto permit the. au-."

tomatic regulator to act freely by disengaging the catch-C from the quadrant 0 .1

The hand-operated lever Cwhen free to move with the handsoperated regulator: maybe employed as an indicator, since by placing.

marks on the quadrant the position of-the.

also the steam-pressure in the cylinder B.

. As above stated, the constructional details may be varied, the principal features being the fact that the two methods of controlling; the burnerwhile capable of separate opera-e.

tion will yet work jointly, andoneisan indi-v cation of the movements of the other.

What I claimas my-.invention,-.and desire to secure by Letters Patent, is?v I 1. In mechanism for controlling a fuel burner the combination withmechanism needle D and cap D may be. ascertained Land for-varying, the flame by controllingthe sup.-.

ply of fuel to the burner and altering-the di mensions of the, burner-outlet, of. a hand-op-: erated devicedirectly; connected to the cone trol mechanism, a piston-regulator i operated by the pressure of steam in thegeneraton heated by the burner, and a yieldingconnece. tionbetween the piston-regulator and .the

burner-control mechanism. s

2. In mechanism for controlling a fuel burner, the combination with mechan ism for varying the flame by controlling the" supply of fuelto the burner and altering -the-.

dimensions'of the burner-outlet, of a handoperateddevice directly :connected to the control mechanism, a. piston-regulator opera atedb heated in the hand control device, and.a lockfonthe hand control device. I I 1 l; .11..

3. In mechanism for controlling a li uidfuel .burner, the combination supply of fuel to the burner and altering the the pressureof steam inthegenerator by. the burner, a yielding. connection I between the piston-regulator and some point IIS dimensions .of the burner-outlet,- of an auto-; 1

matically-operated pistonsregulator, a handwith ,mec anism for varying the flame by controllingthe springs.

In testimony whereof I have signed my name to this specification in the presence of 10 two subscribing witnesses.

THOMAS OLARKSON.

V Witnesses:

W. M. HARRIS, WALTER J. SKERTEN.

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