US1944492A - Burner - Google Patents

Description

Jan. 23, 1934. L. s. CHADWICK ET AL BURNER Filed May 51 1930 3 Sheets-Sheet l Jan. 23, 1934.

L. CHADWICK ET AL 1,944,492

BURNER Patented Jan. 23, 1934 UNITED STATES K a I 1,944,492

PATENT OFFICE 1 1,944,492 BURNER a corporation of Ohio Application May 31, 19am Serial No. 457,882

9 Claims. 401. 158-94) The present invention relates to improvements in the class of stoves or burners disclosed in prior U. S. Patents Nos. 1,443,947 and 1,492,626, issued,

respectively, on the 6th day of February 1923 and the 6th day of May 1924. Burners of the :class referred to comprise, generally, a combustion device and a drum or flue that is supported inoperative relation to the combustion device in such manner that it may be tilted with respect to said device for the'purpose of lighting; or removed therefrom for the purpose of cleaning.

The objects of this invention are the production of a burner of the above nature that is considerably more economical of manufacture than those of the above patents and, at the same time, is equalto or surpasses them in efficiency, speed of heating up, ease of lighting, and convenience of use otherwise.

The invention, as herein disclosed, comprises a tubular burner, a support surrounding and suitably spaced below the upper end of the burner, a collar resting upon, but otherwise disconnected from the support; and a drum surmounting the collar. The parts are so constructed and arranged that when the drum is tilted in one dire'ction by means of a handle that is carried by its forward side, the collar will swing with it about a point of contact between the collar and the support; and when the drum is tilted in'the opposite direction it will disengage itself from the collar so that it may be lifted free thereof.

.A further object of the invention is to so design the parts that when the drum and collar are released and thus surrendered to the influence of gravity their engaging parts will cooperate to automatically and properly position them with respect to the burner.

A further object is to so construct the drum that the air admitted at the bottom is so con trolled and distributed that it rises adjacent the wall of the drum in a smooth, cylindrical sheet thereby to protect said wall from the intense 'heat of the products of combustion and produce an even flame by the avoidance of pronounced streaks therein duetoindividual air ,jets. A further object is to provide a shield for protecting the air admitting openings in the bottom of the drum from becoming clogged by a deposit offoreign matter such for example as boiledover food.

The objects and advantages above enumerated, with others hereinafter appearing, are attained in the constructionillustrated in .theaccdnipanyfling drawings wherein .Fig. l is a fragmentary front elevation of a stove incorporating our imfrom said tube.

provements; Fig. 2 is a vertical section from front to rear through the parts of the frame in the region of g the burner and through the burner drum, collar and support for the latter, the burner being shown in elevation; Fig. 3 is a view some what similar to Fig. 2 showing the drum and collar tilted rearwardly for the purpose of lighting the burner; Fig. 4 illustrates how the drum is tilted forwardly to disengage it from the collar; Fig. 5 is a central section from front to rear through the lower portion of the drum; Fig. 6 is a section substantially on the line 66 of Fig. 5, and'Fig. '7 is a fragmentary detail of the collar support.

In the drawings, the stove frame is indicated, generally, by the reference letter A, the burner is designated B, the collar, which is demountable, is designated C, the drum D, and the collar support E. The present burner is of the well known tubular type. The stove frame comprises a top a and a base or burner-pan a sup;- ported by legs a As'is common-in such stove structures, end panels connect'the" ends of the top and base, one being shown in the drawings and designated :1 while aback a connects the rear edges of the top and base. Above the burner, the top is provided with an opening a that is equipped with a grid a and. to the rear of the burner the back a is provided with an opening a into which the upper portion of the drum swings as it is tilted rearwardly. A flange surrounds the-opening a} and at its bottom is of liberal width andis somewhat resilient so as to relieve the drum of shock when it is brought to bear thereon, thereby to reduce to a minimum the liability of cracking the vitreous enamel with which the drums of such stoves are usually coated. U

Supported longitudinally of the stove frame above the base a is a liquid fuel supply pipe'a to which the burner B is connected in a well known manner so that the wick space of the burner has communication with the supply'pipe.

The support E is preferably constructed of a sheet metal spinning and is in the form of an annulus whose inner edge is flanged upwardly as shown at e. The support is adapted tobe slipped down over the burner so that it is brought to bear upon the circumferential flange b of the outer wick tube, and the support is held in place thereon by bumps b that are struck outwardly It may be explained that there is suflicient flexibility of the parts to allow the flange eto ride over the bumps b in applying the support to the burner, and in removing it therefrom if such becomes necessary. Adjacent its outer edge the support E is provided with a shallow vertical wall e that merges with an upwardly diverging lip e and immediately inside the wall 6 is a bearing portion e on which the outwardly curled lower edge 0 of the collar C rests, the perimeter of said outwardly curled portion fitting easily but reasonably accurately within the wall e. The lower portion of the collar C is cylindrical, and about midway of its height the collar is reduced in diameter to provide a shoulder 0 Above this shoulder the collar converges to about the plane of the upper end of the burner and therebeyond is flared outwardly to form a deflector 0 The bottom wall of the support E is provided with relatively large air admitting openings e (Fig. 7) The usual air controlling member or flame spreader F is disposed within the upper end of the burner.

The drum D consists of a cylindrical wall (1, an annular converging top wall d that is suitably interlocked with the upper edge of the former wall, and a downwardly converging bottom wall d formed with a step or ledge 11 that is spaced a suitable distance above the lower extremity of the drum. The drum rests with such extremity upon the shoulder c of the collar C.

A flange d surrounds the inner edge of the bottom wall and adjacent the forward side of the drum is enlarged to provide a finger d (Figs. 5 and 6). When the parts are in normal position, as illustrated in Fig. 2, the finger d reposes beneath the adjacent portion of the deflector c that surrounds the upper end of the collar C. The step or ledge 11 of the bottom wall of the drum is provided with a series of opening d Extending inwardly ,over the step or ledge a suitable distance thereabove is a baflie d that is preferably in the form of a ring which is shown as secured to the drum by having its outer edge confined within the seam between the drum walls at and d A handle d is attached to the front of the drum, in the present instance adjacent the bottom of the wall 01, and said wall, above the handle, is fitted with a window d through which the flame may be observed.

It is deemed unnecessary to describe the construction and action of the burner B, inasmuch as burners of this kind are so well known, although it may be explained in passing that when the wick b is elevated by the usual wick raising means designated 2) until its-upper edge is exposed above the wick tubes and is lighted, the flame isspread outwardly, in the manner indicated in dotted lines in Fig. 2, by the air currents that pass upwardly through the burner and outiwardly through the perforations of the flame spreader F and beneath the flanges thereof, and upwardly through the openings e of the support E and the interior of the collar C. Fresh air entering through the holes d in the bottom wall of the drum D is first deflected inwardly by the baffle d and thence outwardly and passes about the inner edge of said baflie by the deflector 0 Consequently as it. escapes about the edge of the baille d the air rises within the drum in a cylindrical sheet, protecting the Wall d and the top at from the intense heat of the products of combustion which rise immediately inside said sheet of air. A certain amount of the air which is admitted through the openings :17 serves as secondary air to further promote combustion above the plane of the deflector 0 but inasmuch as the air is smoothed out into a sheet by means of the bafile d and not permitted to rise to the region of the flame in individual jets defined by the openings d", the flame is rendered very even and regular and is free from points and streaks of any appreciable note.

It is clear that the baffle d will serve to prevent foreign matter, such as boiled-over food, from dropping upon the step or ledge d and clogging the holes d"; and inasmuch as the lower extremity of the drum is a material distance below the plane of said ledge, considerable foreign matter may accumulate within the bottom of the drum before it can have any effect upon the ventilation of the drum.

Preparatory to lighting the burner, the handle :1 is grasped and the drum is swung rearwardly as shown in Fig. 3, and at the start of the upward movement of the front side of the drum the finger d engages the deflector c of the collar and causes the latter to tilt with the drum, swinging about its point of bearing on the support E at the rear. After the burner is lighted the drum and collar are swung forwardly and of their own weight come to rest in correct relation to the burner. In returning the drum to its upright position, no care need be exercised to properly position it since the inclined lip e of the support will guide the collar to a proper position upon the bearing part c of the support, and the drum will automatically resume its correct position on the collar.

When it is desired to clean the burner, the drum and collar are both removed from the support E and this is readily accomplished by simply tilting the drum forwardly, as shown in Fig. 4. When tilted in this direction, the finger d withdraws from the deflector c and the rear portion of the flange d easily escapes said deflector as it rises past the same. After the drum has been removed the collar may be lifted from the support. In replacing the parts, it is not necessary to do more than drop the collar over the top of the burner and it will automatically find its place within the support; and inasmuch as it is of the same radial cross section or uniform shape throughout its circumference, it is not necessary to place it in any given angular relation to theburner. It will swing on the support at any point throughout its circumference, and likewise the fingerd will properly cooperate with any part of the deflector 0 Similarly, in returning the drum to the collar no care need be exercised l25 because the downwardly diverging outer surface of the wall of the collar above the shoulder 0 will guide the drum to its seat upon said shoulder. Since the handle (1 is used fortilting the drum,

it isv only natural that it be placed at the front;

of the burner in applying the drum. Furthermore, this position of the handle is practically assured by the fact that it is directly below the window al which must be toward the front of the stove to enable the user to observe the flame during the adjustments of the wick. It will be ob collar surrounding the top of the burner, a support whereon said collar rests but from which it is otherwise disconnected, and a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum when tilted in a given direction cooperating with the collar which parts freely withdraw one from the other when the collar is lifted from the support.

2. In combination, a burner, a demountable collar surrounding the top of the burner, a support whereon said collar rests, and a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum when tilted in a given direction cooperating with the collar to cause the latter to tilt on the support, the support and collar having one a confining niche and the other a part bearing therein as a fulcrum and serving to maintain the collar in proper position when tilted, said part freely withdrawing from the niche when the collar is lifted from the support.

3. In combination, a burner, a demountable collar surrounding the top of the burner, a support whereon said collar rests, the collar and support having one a guide and the other a part adapted to engage the same, such guide and part cooperating under the influence of gravity to position the collar in operative relation to the burner, the collar being otherwise free from the support so as to be capable of being lifted therefrom, and a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum when tilted in a given direction cooperating with the collar to cause it to tilt on the support.

1. In combination, a burner, a demountable collar of substantially uniform shape throughout its circumference surrounding the top of the burner so that it may occupy any position to which it is turned with respect to the latter, a support whereon said collar rests but from which it is otherwise disconnected, and a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum having alifting means and a part for engagement with the collar when the drum is tilted in one direction by lifting pressure exerted on said means thereby to cause the collar to tilt with the drum, the said part of the drum moving free of the collar when the drum is tilted in the opposite direction.

5. In combination, a burner, a demountable collar of substantially uniform shape throughout its circumference surrounding the top of the burner so that it may occupy any position to which it is turned with respect to the latter, a support for the collar, and a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum when tilted in a given direction cooperating with the collar and causing it to tilt on the support, the collar having an annular portion, a part of which coacts with a part of the support to maintain the collar in proper position when tilted.

6. In combination, a burner, a demountable col lar surrounding the top of the burner, an annular support encircling the burner and whereon the collar rests, the collar and support being each of uniform shape throughout its circumference so that either may be turned to any position with respect to each other or to the burner without affecting its function, a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum when tilted in a given direction cooperating with the collar to cause it to tilt on the support, the collar and support having annular portions parts of which coact to maintain the collar in proper position when tilted.

7. In combination, a burner, a demountable collar surrounding the top of the burner, and an annular support encircling the burner and whereon the collar rests, the collar and support being each of uniform shape throughout its circumference, a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum when tilted in a given direction cooperating with the collar to cause it to tilt on the support, the collar and support having one an annular confining niche and the other an annular bearing part engaging within said niche, a portion of said bearing part serving as a fulcrum on which the collar swings when tilted.

8. In combination, a burner, a demountable collar surrounding the top of the burner, a support whereon the collar rests, the collar being uniform throughout its circumference, and a drum surmounting the collar and adapted to be tilted with respect to the burner, the drum having lifting means adjacent one side whereby it may be tilted and having on the same side a finger for engagement with a part of the collar to cause the latter to tilt with the drum, said finger escaping the collar when the drum is tilted toward the side on which the lifting means is situated.

9. In combination, a burner, a collar support spaced downwardly from the top of the burner, a demountable collar surrounding the top of the burner and resting upon said support and having an outwardly flaring top that is uniform throughout its circumference and an annular drum seat below said top, a drum resting upon said seat, and a projection carried by one side of the drum adjacent the seat engaging part thereof for cooperation with the flaring top of the collar thereby to cause the collar to be tilted with the drum when the side of the drum having said projection islifted.

LEE S. CHADWICK. CHARLES J. KESSLER.

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