US1820016A - Gas burner - Google Patents

Description

Aug. 25, 1931. R, H, FIRTH 1,820,016

GAS BURNER Filed April 29. 1929 ATTORNEYS.

Patented Aug. 25, 1931 UNITED STATES PATENT oFFicE RICHARD HENRY FIRTE, OF NEW YORK, N. Y., .lLSSIGrIN'OR TO UNITED CIG-AR STORES COMPANY F AMERICA, OF NEW YORK, N. Y., A CORPORATION 0F NEW JERSEY GAS BURNER Application filed April 29,

This invention relates to burners and more particularly to gas burner assemblies and to control means therefor. V

An object of the invention is to provide l'5 easily operable control means for the fuel supply of a burner.

Another object is to provide improved control means adapted to be operated in response to the position of a cooking vessel ic with respect to a burner.

Another object is to provide improved means for regulating the size of theflame on a burner.

Another' object is to provide fool-proof means for actuating a fuel-control valve.

Another object is to provide a device of the character described which is sturdy and permanent of construction, which can be easily operated, which is economical to manufacture, and which will etliciently perform the purposes for which it is intended.

Other objects of the invention will in part be obvious and will in part appear'he'reinafter.

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts, which will be exemplified in the construction hereinafter set forth and the scope ofthe appliclaims.

For a fuller understanding of the nature and objects of the invention reference should be had to the following' detailed description $5 taken in connection with the accompanying drawings,in which:

Figure 1 is a side view Aof a burner assembly embodying the invention and shows the same in use;

Fig. 2 is a vertical section of the burner assembly;

Fig. a top view thereof;

Fig. 4 is a sectional detail viewof the swinging joint for the burner unit; and Fig. 5 is a sectional detail view of the con trol valve and by-pass.

The invention is exempliiied as embodied in a bracket burner of the type particularly adapted for use at lunch counters, soda fac) fountains, chemical laboratories and other -.0 cation of which will be indicated in the valve.

1929. Serial No. 358,885.

places where a burner is in intermittent use over considerable periods of time and in a position where the operator is apt to move past and over the burner in the performance of his other duties, and where` it is often desirable to employ a burner constructed so that the same may be moved wholly out of the way at such time when its intermittent use is not to be expected.

The exemplified device comprises a supply pipe 11, in the passageway 12 on which there `is provided a shut-off cock or valve 13.' At the outer endof the pipe 11 is a cross-piece 14 having lateral passageways 15, each extending to one side of the passageway 12 and opening into one of a pair of annular chambers 16. On each end of the crossiece 14 there is rotatably mounted an arm 1 of a bracket 18, each of these arms being formed with a passageway 19 connecting one of the chambers 16 with one of the ends of a lateral passageway 2O from which a passageway 21 extends forwardly through the bracket and through a threaded projection 22. 'To the projection 22 there is screwed a conduit member 25 formed with a passageway 26 leading to a burner element 27, a suitable air-intake portion being provided at 28, in the present instance.

In the use of bracket burners, considerable difficulty has been experienced because of the danger of an operator passing his hand over or through a high flame from which a vessel has been temporarily removed. With a View to eliminating this difliculty, a control valve 29 is, in the present instance pro vided in the passageway 26. A slight flow of gas, for maintaining a pilot light in the burner, is ,permitted by the passageways 31, 32 and 33', which provide a by-pass to the In order to control the size of this pilot light so as tosave a maximum amount of fuel without danger of the light being extinguished by drafts or other particular conditions at the place the burner is used, there is provided suitable means such as the grooved screw 34 in the passageway 32 for controlling the How of the gas through this by-pass. It is to beunderstood that in instances where it is not desired to control the size of the pilot light, the valve itself may, if desired, be designed to permit a small flow even when in its furthest closed position.

The exemplified burner is adapted to be utilized in heating materials in a vessel such, for example, as the flask indicated at 35. In order to hold the vessel 35 over Vthe flame there is provided a bracket 36 carried on an upright 37 mounted on a suitable support 38.

In certain of its aspects the invention contemplates the provision of means for opening the valve 29 when a vessel is over the flame. To this end, the valve 29 is mounted, in the present instance, on a rotatable crossbar 39 to the ends ofV which are secured the arms 40 carrying an actuating element at their lower ends; this actuating element being adapted to be moved rearwardly by the support 38 when the latter is moved to slide the vessel 35 over the flame. IVith a view to automatically returning the valve 29 to closed position, when theV support 38 is moved to withdraw the vessel 35 from Vthe flame, there is provided at the rear of the element 41, in the present instance, a weighted element 42. y

By the adjustment of the screw 34 in the by-pass a sufficient flow to maintain a simmei-ing flame at the burner element, even when the valve 29 is closed, may be `permitted. Y

The bracket 18 normally rests on a support 43 carried by the conduit 11, and, as heretofore brought out, is rotatably mounted. so that the burner unit may be swung upwardly out of the way at such times as its intermittent use is not required. Since it is desirable that the flame be completely entinguished and the fuel supply cut offV when the burner unit is swung upwardly into inoperative position, the valve 13 is provided with an operating lever 44 which, when the valve is in open position, is in the path of movement of the bracket 18 and whichis adapted to be swung rearwardly-to closev the valve when the burner unit, including the bracket 18, is swung to an upright position. W'hen it is again desired to use the burner, the burner unit is swung downwardly. The lever 44 remains, however, in arearward position'and the valve 13 remains closed so that manual operation of the lever is .necessary to open the valve. In this manner the danger of the escape of gas, if the burner is accidentally knocked down or if it is pulled down and the operators attentiondistracted before he has an opportunity to light the burner, is prevented.

There is thus provided a relatively safe device which can be operated with a minimum of operations on the part of the operator, which is fool-proof, and which is especially well adapted for use at lunch counters, soda fountains, chemical laboratories and the like, whereheatingoperations must be conducted on the spot, in a comparatively short time, and under crowded conditions.

Since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. It is also to bev understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention whiclnas a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. Ina device of the character described, the combination of a fuel supply pipe, a shut-ofi1 valve in said pipe, a burner unit extending from said pipe and movable between operative and inoperative positions, and means to close said shut-off valve when said burner unit is moved from an operative to an inoperative position, said means being arranged to retain said valve closed untill the same is manually operated independently of the movement of the burner unit.

2. In a device ofthe character described, the combinatioin of a fuel supply pipe, a shut-olf valve in said pipe, a burner unit extending from said pipe and movable between operative and inoperative positions, means to close said shut-off valve when said burner unit `is moved from an operative to an inoperative position, and a valve-operating lever adapted to extend into the path of movement of said burner unit and to be moved therebyto a valve-closing position, said lever being arranged to remain in said valve-closing position until manually moved therefrom;

3. In a device of the character described, the combination of a fuel supply pipe, a burner unit extending outwardly from said pipe and mountedso that the same may be swung `upwardly out of operative position, means carried by said pipe to support said burner unit in its operative position, a shutoff valve in said pipe, and a valve-operating lever adapted to extend in the-path of upward movement of said burner unit and to be moved thereby to a valve-closing position, said lever being arranged to remain in said valve-closing position until manually moved therefrom.

l4. In a'device of the character described, the combination of a fuel supply pipe, a shut-off valve in said pipe, a burner unit extendingfrom said pipe and movable between operative and inoperative positions, mea-neto close said shut-off valve when said burner is moved from an operative to an inoperative position, a burner element forming a part of said burner unit, a fuel conduit in said burner unit, a control valve inv said conduit, and means for operating said control valve, said means including an element adapted to be displaced to operate said control valve when a cooking vessel is placed in position under said burner.

5. In a device of the character described the combination of a burner element, a fuel conduit, a valve in said conduit, a fuel sup ply pipe, a shut-off valve in said pipe, au burner unit formed to provide a burner ele-- ment and a fuel conduit leading thereto said unit being connected with said supply' pipe and being mounted for rotation upon' a horizontal axis, a lever adapted to extend into the path of rotation of said burner unitiv and to be operated thereby for closing said". valve, said lever being arranged to remain in said valve-closing position until manually moved therefrom, a control valve in said conduit, and means for operating said control valve, said means including an element adapted to be displaced to operate said control valve when a cooking vessel is placed in position upon said burner.

6. In a device of the character described, in combination, a fuel supply pipe, a burner unit extending from said pipe, a horizontally disposed shut-off lvalve in said pipe disposed between the burner and the fuel supply pipe, a yoke member having its legs connected to the ends of said shut-off valve and depending therefrom, an actuating member carried by said depending legs and adapted to be moved by a support for a cooking vessel when it is slid over said burner to open said 40 shut-off valve, said yoke also having an arm l opposed to said actuating member and extending upwardly, and provided with a; weighted portion, whereby when the support is removed from contact with the actuating; 45 member the weight is pulled down by grav-- .k ity to close the shut-oftl valve.

1 In testimony whereof I afliX my signature.,

RICHARD HENRY FIRTH.,

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