US1461572A - Acetylene lamp - Google Patents

Description

Janly m, 1923- EAGLE J. M. BROCK,

ACETYLENE LAMP Filed June 25; 1920 Patented July 19, 1923.

STATES JOHN M. BEOCK, or" BRooKLYiv, NEW YORK.

ACETYLENE LAMP.

Application filed June 23, 1920. Serial No. 391,107.

To all whom it may concern:

Be it known that I, JOHN M. Bnoon, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Acetylene Lamps, of which the following is a specification, reference being had therein to the accompanying drawing. jThis invention relates to acetylene gas lamps, and more particularly to the burner equipment thereof. Such equipment comprises, generally, a burner tube projecting forwardly from the gas chamber of the lamp, a burner: tip secured to the outer end of the tube and formed with the usual gasoriflce, and a cap surrounding the burner tip and constructed to protect the gas flame from strong drafts of air, water, etc., (see the Brock Patent No. 1,269,047). In lamps in most general use, the burner tip (made of lava and of cylindrical form) is driven tightly into the outer end of the burner tube, while the protective cap (made of metal and machined to form) is screwed upon the end of the burner tube so as to surround the burner tip, such cap incidentally serving to hold the lamp reflector in place upon the burner tube. As the parts are thus constructed and arranged, the protective cap is comparatively expensive to manufacture, due to its particular form and the considerable number of machining op erations required, and besides it is quite difficult to remove the burner tip for cleaning or replacement, and especially without the use of tools, which frequently damage or fracture it in the process. r

The present invention is intended to overcome the foregoing objections, and contemplates certain improvements in the construction and arrangement of the several parts, whereby they may not only be manufactured at materially less cost than heretofore, but also assembled and disassembled with greater ,ease and facility, and this without requiring the use of any extraneous tools for that purpose. To these ends, specifically, it is proposed to make useof a reflector which is screwed upon the outer end of the burner tube,and to employ a lava burner tip comprising a neck portion driven tightly but detachably into the open end of the burner tube and an enlarged head portion located beyond such end of said tube, the arrangement being such that by unscrewing "the reflector, the burner tip will be gently v the burner tip and which act by their frictional engagement therewith to hold the cap in place; and to insure the retention of the cap upon the burner tip, the latter is formed in its outer surface with a peripheral groove to engage ribs or flanges projecting inwardly fromthe elastic fingers, such engagement being permitted and effected by the yielding of the elastic fingers as the cap is forced into' position. The cap is also formed at or near the base of the elastic fingers with an interior annular rib or flange which engages-the forward face of the enlarged head portion of the burner tip when the'cap is applied thereto and thus positions and main tains the parts in their proper cooperative relation. As so formed and arranged, the protective cap may be, and in actual prac tice is, produced by stamping out a blank from a thin sheet of metal (e. g. brass) and then turning or pressing the blank into the require'dform, so that the cost of manufac ture of the cap is reduced to a minimum.

In the accompanying drawings:

Fig. l is a side elevation, partly in section, of a lamp equipped with the improved parts, and showing by the dotted lines the manner in which they are removed.

Fig. 2 is an elevation of said parts in unassembled condition, but with the protective cap applied to the burner tip; and

Fig. 3 is a perspective View of the burner I tip and protective cap in separated condi' tion.

The lamp A is provided as usual with the reflector B, the burner tube C, the burner tip D, and the protective cap E, the latter coverinc: the burner tip and constructed to form Referring first to the reflector B, it is provided with a centrally located sleeve poring it to'or unscrewing it from the burner tube.

The burner-tip D is, preferably made of ordinary lava and is formed with the customary gasJ outlet or orifice D In the embodiment illustrated, the burner tip comprises a conical neck portion D? and an enlarged cylindrical head portion D although the particular shape of these portions may I neck portion D is seated tightly in a correbe otherwise if desired. lVhe-n the parts are in, assembled conditlon-(as in Fig. 1), the

sponding bore formedjin the outer end of the burner tube C, while the enlarged head portion I) is located beyond such end of the tube and-in front of the reflector B, it being noted that thediametcr of the head portion is greater than the interior diameter of the sleeve portion B As result of this arrangement, when it is desired to remove the burner tip for cleaning or replacement, this may be done merely by unscrewing the reflector B, which by its engagement with the rear face .of the enlarged head portion D gently but positively pushes the tip from the burner tube (see dotted lines in Fig. 1).

vThis arrangement is very advantageous, in

that it not only enables the burner tip tobe quickly and easily removed, but it obviates any possible damage to the tip in its removal. It will be understood of course, that in removing the burner tip as just indicated, the reflector 13 does not need to be unscrewed entirely from the burner tubef Referring now to the protective cap B, it is formed in its front face. with the central opening E arranged in alignment with the burner orifice D and through which the flame may extend; and it is also formed in its front: facewith the further smaller openings E arranged concentrically about the central opening E for the admission of air to the interior chamber to support combustion within said chamber. The purpose of these cap openings is fully set forth in the Brock PatentNo. 1,269,047 above mentioned and-need not therefore be discussed further here. i In accordance with the present inven tiemthe cap E, insteadof being screw-threaded to the burner tube G as'in prior construe tions, is applied directly to the burner tip 1), being formed at its rear with elastic fingers E produced by cutting or slitting the cylindrical portion of the cap, as at E. These elastic fingers (Figs. 1 and 2) fit over the enlargedhead port-ion D and cenfinethe conveniently produced. by

so as to interlockwith each other when attached. To that end, in the embodiment illustrated, the head portion D is formed in its outer surface with a peripheral groove D while the elastic fingers E are formed on their inner faces with ,circumferentially extending ribs on flanges. E which may be ressing or indenting. y reason of this construction,

when'the cap is applied to the burner tip, I

the ribs E in passing over the enlarged head portion D spread the elastic fingers Eton? wardly and maintain them in this condn tion until the ribs reach the peripheral groove 1), when the fingers because of theirelasticity act immediately to snapthe ribs into the groove, thus effecting the interlocking of theparts. i f course, in removing the cap from the tip, the elastic fingers yield outwardly to permit the ribs to be disen- 150 gaged from the groove. It will be seen therefore that, while the cap may be readily applied to and removed from the burner tip as desired, it is held firmly in position there on when in use so as to withstand any rough usage to whichthe lamp is subjected without danger of being knocked or jarred off.

It is important that the protective cap when applied to the burner tip be properly located thereon so asto provide a certain amount of airspace between its front face and that of the burner tip. While the enieo gagement of the ribs E in the groove D would probably be sufiicient, it is preferred to provide other means to insure this result. Accordingly and byway of example, the cap it is formed with a further interior annular rib or flange E (as by the pressingor indenting of the collar'portio'n of the leap), which-rib is located atthe base of the elastic fingers E and in such position that, when the cap is forced over the burner tip, it engages the front face of the head portion D at or about the instant the ribs E reach the groove D The rib E thus acts as a stop to prevent the cap from being pushed beyond its proper position on the burner tip when applied thereto, serving also as a seal to prevent the escape-of air from the chamber within the cap. 1 1

It'is believed the manner in which the parts are assembled and disassembledwlll be entirely clear from the foregoing description. However, to recapitulate, in-essem- "bling the parts, th reflector, B, is first screwed on to the burner tube C (see Fig. 2) then the lava burner tip D is driven tightly :into the protruding end of the burner tube, (as by tapping the tip witha wooden mallet), and thereafter the protective cap E is forced over .the burner tip by'hand' pressure.

In removing the tip, the reflector B is unscrewed from the burner tube, and pushes the tip from its seat therein, see dotted lines fore or after the tip is removed from the burner tube. I

Some of the advantages of the improved arrangement have already been mentioned. It is particularly noted that the parts are extremely simple and can be made at small cost and fitted together without the slightest difiiculty or delay and without involving any radical alterationin the'existing parts, which may therefore be manufactured in the usual way. In addition, the arrange ment is strong, durable and compact, and is capable of ready assemblage and disassemblage to permit cleaning or repair. These and other advantages will be apparent to those skilled in the art. However, in its broader aspects, the invention is not limited to the precise construction shown and described, as many changes may be made in the details thereof without departing from the spirit of the invention or sacrificing its chief advantages. Generally speaking, it is to be understood that the invention is not limited to any specific form or arrangement except in so far as such limitations are specified in the claims. I

Having thus described my invention, its construction and mode of operation, .what I claim is as follows:

1. A lamp comprising a burnertube provided with an internal burner-receiving surface; a burner having a securing portion including a surface adapted to conform with the internal burner-receiving surface of the tube and to be disposed withinthe tube; said burner having a portion constituting a shoulder which extends beyond a marginal edge of the burner tube when the burner is disposed therein; and a member disposed on the outer surface of the burner tube back of the shoulder on the burner, said member being adapted to engage the shoulder on the burner when being removed, whereby separation of the member and the burner tube will also effect removal of the burner from within the tube.

2. A lamp comprising a burner tube provided with an internal burner-receiving surface; a burner havinga body; a securing portion on the body, said securing portion having a surface adapted to engage with. and be disposed on the inside of the burner tube to attach the burner to the tube; a shoulder on the burner in proximity to the securing portion and extending beyond a marginal edge ofthe burner tube when the burner is attached to the tube; a member detachably disposed on the outer surface of the burner tube back of the shoulder on the burner, said memberbeing adapted to engage the shoulder on the burner when the member and burner tube are disconnected and remove the burner from the tube; anda cap having a resilient securing portion adapted to engage a portion of the burner to detachably attach the cap to the burner, said cap and burner being removable as a unit: when the member and burner are disconnected and the cap being removable from the burner without disconnecting the burner from the tube.

8. In an acetylene lamp, the combination of a burner having aburner orifice, and a In testimony whereof I have aflixed my signature hereto.

JOHN M. BROOK.

Y protective cap covering the burner and con-

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