US1297646A - Chimney-support for oil-lamps. - Google Patents

Description

Li L BRAGG. cmmmsv suaaom roe on LAMPS.

APPLICATIQR FILED 02c.- 19. ma.

l ,97-,%,' Patented -Mar.v18,1919;

Laliz'e Bragg.

JNVEN'I'OR ATTORNEY.

OFFICE.

LALLIE TAI'I BRAGG, OF CAMDEN, ALABAMA.

CHIMNEY-SUPPORT FOR OIL-LAMPS,

Specification of Letters Patent- Patented Mail- 18, 1919.

Application filed December 19, 1918. Serial N 0. 267,420.

To all whom it may concern:

Be it known that I, LALLIE TAIT BRAGG, a. citizen ofthe United States, residing at Camden, in the county of Wilcox and State of Alabama, have invented Chimney-Supports for Oil-Lamps, of which the following is a full and complete specification.

My invention is an improvement in 011- lamps, and has special reference to the provision of means for more securely holding the chimney in connection with the burner. In the ordinary construction of the conventional oil-lamp the outer edge of the burner device is provided with several spring fingers which grip the lower port-ion of the chimney for holding it in place on said burner, and unless these fingers embrace the .chimney firmly it is likely-to be jolted oil in handling the lamp. Inasmuch as the chimney must be removed in order to light the burner it is required that the means of' connection should be such as to permit its removal and replacement to be accomplished very readily and conveniently, and although the gomlnon gripping fingers fulfil this requirement the frequent manipulation ofthe chimney tends to displace or spread them so that they usually fail to properly rip the chimney and hold-it from falling 0 It is the purpose of my invention in the present instance to provide the burner device with a marginal annular flange having threads and a. shoulder which cooperate with corresponding threads on the lower portlon of the lamp-chimney to permit the lathg.

to 'be More securely connected to said burne the construction being such that the chimney may be readily applied by giving it a halfturn and the threads on the chimney Wlll engage the shoulder in the flange of the burner to securely hold said chimney from working loose or tilting.

In the following specificatiohs I have fullydcscribed the construction and operation of" the novel means of connection, and what I particularly claim as new, and desire to protect by Letters-Patent is more specifically set forth in the appended claims. i In the drawings: .LFigure 1 is an elevation illustrating the application of my invention.

il ig. 2 is a sectional view' through the lal up-chimney and cooperating parts of the burner device.

l jl g. 3 is an elevation of the chimney and burner, separated, the burner being partly in section.

Fig. 4 is a plan View of the burner device, showing the disposition of the threads.

Like letters and numerals of reference indicate like parts in the several views.

In illustrating the application of my invention I have shown bowl or font, as A, a conventional type of Wick-burner B, and a chimney C of ordinary shape, and as my invention pertains to cer tain attachments or additions to the chimney and burner the general form of the lamp parts a'bove referred to may be changed, as will be understood.

In the present instance the annular plate 5 surrounding the body of the burner is provided with an upwardly projecting marginal flange 6 having internal threads or spiral grooves 7 extending substantially half wayaround at opposite sides of said flange and opening out at the upper edge thereof, the lower ends of the threads or spiral grooves terminating a distance above the plate 5 to leave an intermediate wall 8 between said plate and aforesaid threads. The inner surface of this wall is on a vertical plane with the base of the threads or grooves 7, whereby there is formed a shoulder 9 through which the lower ends of the spiral grooves open out, as will be understood. Of course this particular form of flange maybe easily stamped or otherwise shaped from the metal from which the body portion 10 of the lamp chimney C is pro-' vided at opposite sides with threads or spiral ribs 11, 11, corresponding in size and pitch with the threads or spiral grooves 7 in the flange on the burner and preferably starting a short distance above the lower edge of the chimney so that the extreme lower portion of the latten nay serve as a uide by entering the annular flange of Te burner in advance of the engagement of the threads. The cylindrical portion of the chimney is also extended above the threads or ribs 10 so that the latter may pass beyond the spiral grooves 7 and engage the shoulder 9, he aforesaid cylindria common form of part of the the usual spring 7 mil ar pl ate cal portion of the chimney being then embraced by or fitting within the threaded portion of the flange of the burner and the chimney seated upon the annular plate 5, as clearly shown in Fi 2 of the drawings.

In attaching the chimney to my improvet retaining-flange on the burner the lower end of the chimney is inserted in the upper or threaded portion. of the flange and said chimney is then turned to thread the spiral ribs through the corresponding grooves so that the chimney will seat on the annular plate and be securely and firmly held by engagement with the shoulders and threaded portion of said retaining-flange. As will be noted the operation. may plished, and in this instance the chimney is not only securely connected to the burner but is also prevented from accidentally working loose or falling off. The chimney can be removed as quickly by simply lifting and turning it so as to thread the ribs out of the upper or threaded portionof the retaining-ti ange. As heretofore stated, the chimney retaining-flange will be formed as an integral body portion of the burner by during the operation of stampbody portion from sheet metal,

shaping it QandtherefOre the complete burner can be 3 produced at less expense than one having fingers that have to be applied by a separate operation.

, I claim:

1..A burner for oil-lamps having an anand an upwardly projecting marginal flange with threads at the upper portion thereof terminating a distance above the plate, in combination with a ehnnney having corresponding threads at its lower end and a cylindrical portion above the threads on a vertical plane with the base of said threads. the width ofthe threaded portion of the chimney corresponding approximately witlrthe width of the space between the annular plate and threaded portion of the burner to fit within said space, substan tially as shown and for the purpose set forth.

2. A burner for oil-lamps having an an nular plate and an upwardly -projecting marginal flange with threads at the upper portion thereof and a shoulder at the lower be readily accomof the grooves 'ing approximately with end of the threads through which the latter extend. said shoulder being located a distance above the annular plate of the burner; in combination with a chimney having corresponding threads at its lower end and a cylindrical portion above the threads on a vertical plane with the base of said threads,

the width of the threaded portion of the chimney corresponding approximately with the width of the space between. the annular plate and shoulder on the burner to occupy said space, substantially as shown and for the purpose set forth.

3. A burner for oil-lamps-having an annular plate and an upwiurdly projecting marginal flange with spiral grooves at its upper portion extending substantially half way around the flange atopposite sides thereof and shoulders between the lower ends and at a distance above the annular plate; in combination with a chimney having at its lower end ribs corresponding with the aforesaid grooves and a cylindrical portion above the ribs on a plane with the base thereof, the width of the ribbed portion of the chimney corresponding approximately with the width of the space between the aforesaid shoulders and annular plate of the burner, substantially as shown and for the purpose set forth.

4. A burner for oil-lamps having an annular plate and an upwardly projecting marginal flange with spiral grooves at its upper portion extending substantially half way around the flange at opposite sides thereof and shoulders between the lower ends of the grooves at a distance above the annular plate; in combination with a chimney having a cylindrical portion at its lower end and spiral ribs on said cylindrical portion corresponding with the spiral gro ves in the flange of t e burner. said ribs being located a short distance above the lower end of tlfi. chimney to provide a guiding portion below the ribs. the width of the ribbed portion of the chimney correspondthe width of the space between the aforesaid shoulders and annular plate of the burner, substantially as shown and described.

LALLIE TAIT BRAGG,

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