US2311253A - Mantle support - Google Patents

Description

Feb. 16, 1943. RlNNMAN MANTLE SUPPORT Filed June 12, 1941 1 3/. aim mmzw Patented Feb. 16, 1943 MANTLE SUPPORT Harry Rinnman, St. Charles, 111., assignor to Lindsay Light 8: Chemical Company, West Chicago, 111., a corporation of Illinois Application June 12, 1941, Serial No. 397,785

3 Claims.

The object of the present invention is to provide a combined mantle support and burner cap for application to a blue flame lamp of the wick type, which unit can be readily applied, will give excellent illumination, and is considerably less expensive to manufacture than other units of generally similar character now on the market.

The improved unit can be applied advantageously to the gallery of a lamp of the construction shown in Davis Reissue Patent No. 18,061, in place of the unit shown in that patent, but is it not limited in its use to such a gallery as certain features of the invention are of more general application.

Other more specific objects and advantages of the invention will be apparent to those skilled in the art upon a full understanding of the construction, arrangement and operation of the parts forming the unit.

One embodiment of the invention is presented herein for the purpose of exemplification, but it will of course be appreciated that the invention is capable of being incorporated in other structurally modified forms coming equally within the scope of the appended claims.

In the accompanying drawing:

Fig. 1 is a vertical diametric section through a lamp equipped with the new unit;

Fig. 2 is a side view of the unit, removed from the lamp;

Fig. 3 is a horizontal section, taken on the line 3-3 of Fig. 1;

Fig. 4 is a bottom plan view -of the unit; and

Fig, 5 is an enlarged radial section, taken on the line 5-5 of Fig. 3.

As will be observed in the drawing, the new combination mantle support and burner cap is shown applied to the gallery ID of a lamp of the construction disclosed in Davis Reissue Patent No. 18,061. This gallery includes inner and outer wick tubes II and I2, an oil wick I3, a

flame spreader M, a perforated bafile IS, a burner cone IS, a perforated cylinder l'l provided with an inturned rim l8, and a perforated basket IS.

The combined mantle support and bum'er cap is a self-contained unit which includes an annular base 20, an arched wire 2| and a mantle 22. The base 20 is adapted to fit upon the upper portion 23 of the cone I6 in secure but readily removable association with the same.

The annular base 20 of the unit is of twopart construction and consists of an upper ring 24 and a lower ring 25. The ring 24 is provided about its outer periphery with a large number of small upstanding fingers 26 which serve to center the lower portion of the mantle 22 and com trol the flow of air through the same. The inner portion 21 of the ring 24 is of conical form, extends below the level of the intermediate portion, and is turned downwardly and outwardly at 28 about the inner edge of the ring 25. The ring 25 underlies the ring 24 and is provided about its outer edge with a plurality of tongues 29, Certain of these tongues, designated 30, turn downwardy to engage with the outside of the burner cone l6, whereby to center the unit with respect to the cone, while the remainder of the tongues, designated 3|, are disposed horizontally, with corresponding edges thereof turned upwardly a little at 32, to cam under tongues 33 on the outer portion of the gallery, whereby to wedge the unit down tightly and flatly against the upper portion 23 of the cone.

The lower ends 34 of the arched wire 21 are welded or otherwise secured to two of the downturned tongues 30. The mantle 22 is suspended from the cross portion 35 of the wire 2| by a small wire hook 36, which hook is a vertically extending shank which extends upwardly through a hole in a flattened section 31 of the cross portion of the wire. The shank 38 of hook 36 is upset slightly both above and below the flattened section of the wire at 39, with the lower upset portion spaced a little below the under surface of the wire, whereby to prevent any substantial endwise movement of the shank while allowing for suificient movement to absorb shocks or jars which might otherwise be injurious to the mantle 22.

I claim:

1. A combined mantle support and burner cap for application to the gallery of a blue flame lamp of the wick type, comprising two sheet metal rings secured together one above the other, an arched wire secured at its ends to one of the rings, a mantle suspended from the top of the' wire, integrally formed means about the outer edge of the, upper ring for centering the lower end of the mantle relative to the rings, and integrally formed means about the outer edge of the lower ring for centering the rings relative to the gallery.

2. A combined mantle support and burner cap for application to the gallery of a blue flame lamp of the wick type, comprising two sheet metal rings secured together one above the other, an arched wire secured at its ends to one of the rings, a mantle suspended from the top of the Wire, integrally formed means about the outer edge of the upper ring for centering the lower end of the mantle relative to the rings, integrally formed means about the outer edge of the lower ring for centering the rings relative to the gallery, said first mentioned means consisting of a plurality of upturned fingers, and said second mentioned means consisting of a plurality of downturned tongues.

3. A combined mantle support and burner cap for application to the gallery of a blue flame lamp of the wick type, comprising a ring having means for centering the same with respect to a portion of the gallery, an arched wire securedat its ends to the sides of the ring and provided at its top with a flattened and apertured portion, a hook having a vertical shank which extends upwardly through said portion, in loosely associated relation with the latter, and a mantle suspended from the hook in centered relation to the ring, said shank having enlargements both above and below the apertured portion of the arched wire, with the lower enlargement spaced slightly below said portion, whereby to prevent any substantial endwise movement of the shank while allowing for sufficient movement to absorb shocks and jars.

HARRY RINNMAN.

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