US564017A - Gustus h - Google Patents

Description

(No Model.)

N- JOHNSON 8a A. H. JONES.

' CENTRAL DRAFT LAMP.

No. 564,017. Patented July 14, 1896.

UNITED STATES PATENT ()FFICE.

NIS JOHNSON AND AUGUSTUS H. JONES, OF MERIDEN, CONNECTICUT, AS-

SIGNORS TO THE MERIDEN BRONZE COMPANY, OF SAME PLACE.

CENTRAL-DRAFT LAM P.

SPECIFICATION forming part of Letters Patent NO. 564,017, dated July 14, 1896. Application filed August 7, 1893 Serial No. 482,597. (No model.)

To all whom it may concern.-

Be it known that we, NIS JOHNSON and AU- GUSTUS H. JONES, of Meriden, in the county of New Haven and State of Connecticut, have invented a new Improvement in Central-Draft Lamps; and we do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be afull, clear, and

exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure l, a vertical sectional View of a central-draft lamp embodying our improvements,

I 5 the draft-tube being broken away to more clearly disclose the construction of the wickcarrier; Fig. 2, a detail view of the upper end of the tubular guide and operating-rod, viewed in the direction indicated by the arzo row, Fig. 1; Fig. 3, an enlarged detail showing aportion of the draft-tube and the combined secondary perforated air-distributer and drip-trough; Fig. 4, a detail View showing the combined secondary air-distributer and drip-trough in plan within the draft tube, the latter being broken away to disclose the discharge-openings.

Our invention relates to a central-draft lamp, and especially to improvements in the means for adjusting the wick, in the wickraiser, and in the means for distributing the air and permitting the return of oil to the wick, its objects being to produce a simple, convenient, and effective device, possessing advantages over lamps of a similar type.

\Vith these ends in view our invention consists in certain details of construction and combinations of parts, as will be hereinafter described, and then particularized in the 4o claims.

I11 the drawings we have shown an ordinary mammoth lamp-fount A, mounted on its customary perforated base A, and provided with the central-draft tube B. Y At one side of the lamp-fount A is located a tubular guide C, which extends completely through the same, at both its lower end 0 and its upper end 0, said ends projecting from the lampfount. The upper end 0 of the guide C is constructed so as to take into the screwthreads cl, of coarse pitch, formed on the vertical operating-rod D near its upper end. This operating-rod -D extends beyond both ends of the guide C, and at its lower end is provided with a milled knob E, whereby it may be rotated within the said guide. The upper end of the rod Dis provided with a button F, which is received by screw-threads f, formed 011 the same above the coarse threads (1. The particular construction whereby the upper end 0 of the tubular guide C is adapted to take into the coarse screw threads (Z may, of course, vary-as, for instance, instead of the short spiral ribs C upset on its inner surface, it may have inwardly-proj ecting points or studs.

The upper end of the operating-rod D swivels or turns in a head or disk G, located at the upper end of the draw-bar H, which passes into the lamp-fount and is provided with means for raising the wick. The lem ral stem h, at the lower end of the draw-bar H, passes through a vertical slot 1, formed in the fixed tubular section J, which depends from the top of the lamp-fount and is concentric with the draft-tube l3, and coincident with the neck of the fount, to which it corresponds in diameter, wherebya large annular chamber J is formed between it and the draft-tube. A tubular section K, attached to the stem h of the draw-bar, telescopes within the tubular section J. These tubular sections J K are therefore much larger than the ordinary wick-band, and they dispense with the same. Struck out of the inner tubular section K, so as to leave vertical openings 7e, are vertical wick-holding jaws L, formed at their upper ends with outwardly-bulged bearing portions M, and toothed inwardlyprojecting lips m, which bite into or engage the wick. The jaws L, while they are shown as integral with the inner telescopic section K, it is evident that they may be formed separate therefrom and attached thereto, but in either case they are to be made of spring metal.

The natural tendency of the jaws is to spring outward, but the contact of the bulged bearing portions M with the inner wall of the outer fixed telescopic section J forces the toothed lips m into the wick. WVhen, however, the draw-bar H is raised by the operating-rod E to the position to release the jaws from the wick, the said jaws will be permitted to spring outward from the wick by reason of the clearance spaces or openingsN in the upper end of the section J, which receive the bulged bearing portionsM when the latter are in range with them. In the act ol." raising the wick the lower projecting end c of the guide U forms a stop for the impingement of knob I!) when the jaws have been released from the wick. \Vhen the operating-rml D is lowered, the jaws are caused to again move inwardly, so as to engage the wick, by the inclines in formed on the under side of: the bulged bearing portions M being forced. in contact with the bottom edges of the clearance spaces N.

It is designed that the pitch of the screw (7 should. be such as to cause the rod 1) to rotate under pressure exerted on the button 11, thus permitting the rod to be plunged or shoved down (prickly, so as to have the advantage of a plunge and screw. Such construction is not claimed herein as broadly new, but only where the operating-rod turns within and is raised and lowered in a :iixed guide. 13y constructing the wick adjuster or raiser with these two collars .l K, the lamp can be easily wicked, and an. ordinary instead of a special wick may be employed.

At the. upper end of the draft-tube 13 is the customary perforated air-distriljniter O, having the deflector I at the top. A short distance below the top of the drat'ttul,)e is an internal annulus or ring Q,wh ich flares downwardly, and at its lower end is provided with a horizontal peripheral .l'l ange q, whereby it is 'iirmly secured to the inner wall of the said tube. The lower edge of the air-distributcr rests on this flange 1. The upper end. of the annulus or ring hasan upwardly-projecting vertical annular flange r. Between the flanges q and r the said annulus or ring is furnished. with perforations R, through which the air passes, and whereby it is equally distribntcd in its passage to the air-distributor 0. It will be noted that this annulus or ring constitutes what we may term a secondary air-distributer, and at the same time serves as a drip-trough to catch the oil (ii-upping from the wick. The flange (1 is, of course, imper- Eorate, and the oil drippin thereupon will be permitted to escape back into the lamp-fount through the medium of the discharge-openin .9, made in the draft-tube l3.

Although we have shown our improvements applicable to what is called a mammoth lamp, yet we do not limit ourselves thereto, as they may be applied to smaller lamps having their wicks adjusted from the top of the founts. lVc do not limit ourselves to the p recise form of devices herein shown, as other and different constructions may be adopted and maybe resorted to by skilled mechanics without departing from the scope and spirit of our invention. \Ve are aware, however, that it is old to construct a wick-adju sting device which provides for plunging and lifting the wick by the direct action of a draw-bar, and also for effecting a close or line adjust ment of the wick by turning a linger-button. \Vc are also aware that it is old to engage a wick located upon a central dra'l't-tube by means of spring wick-gripping jaws carried by a wick-holder and normally held in. their gri iping positions, but allowed to retire and release the wick when the wick-holder is raised in the lamp-fount to a predetermined elevation. \\'e are also aware that a wickadjusting device containing an operating-rod projecting above and below the lamp-[:ount and adapted to be operated either by its upper or lower end, and located within a bearing-tube also mounted in the lonnt, is old. \Ve do not, thercli'ore, claim either of those constructions ln'oadly.

llav l1] lully dcscri bed our invention, what we claim as new, and desire to secure bylletters Patent, :is-

l. I n accntral-draft lamp, the cmnbiiuttion. with the t'ount and central draft-tube thereof, of a'vertieally-arranged nonarotatable guidetube permanently mounted in the fount and fixed at its upper and lower ends thereto, an externally screw-threaded lon gitudinall ymovaldc, revoluble operating-rod located within and projecting above and below the ends of the said guide-tube, which takes into the threads of the rod, an operating-knob or button located at the projecting lower end oi. the operating-rod, for operating the same, a wick-holder combined with the central dral'ttube, and movable up and down thereupon, adraw-bar constructed and arranged independent of the guide-tube, connected at its lower end with the wick -ho1der, passin through the upper portion of the lamp-fount at a point between the neck thereof and the guide-tube, and having its upper end turned outward and furnished with a head having a central vertical perl'orat ion through which the upper end of the operatinga'od projects, and in which the said rod is free to turn; and a button applied to the projecting upper end of the rod, and bearing on the upper face oi. the said head, rotating with the rod and coupling the same with the draw-bar, the threads of the rod being so coarse as to permit it to be plunged up and down through the medium of the draw-bar, in the head of which it then. rotates idly in one direction or the other, substantially as described.

2. Ina central-draft lamp, the combination. with the fount and central. dratt-tulim thereof, of a fixed tubular section cxtendin down into the :lount from the neck thereof to which. it COl'lfOSPOlltlS in diameter, and constructed near its upper end with clearance spaces, a verticallymovable tubular section tittin within the said fixed section which forms a guide for it, and provided with one or more vertically-arranged wick-jaws constructed to normally ride upon the inne face of the fixed section by which their inwardly-turned ends are projected inward to engage a wick upon the draft-tube, with which both sections are concentric, and from which they are separated by an annular chamber, and exerting a constant effort to spring outward away from the draft-tube; and means mounted in the lamp-fount, passing through the fixed sec tion, and connected with the movable section for raising and lowering the said movable section, whiclnwhen sufliciently raised brings the upper ends of the wick-jaws into range with the clearance spaces in the fixed section, permitting them to spring outward and disengage the wick, substantially as described.

3. In a central-draft lamp, the combination with the fount and central draft-tube thereof, of an air-distributor adapted to be inserted into the upper end of the said draft-tube, and a perforated annulus located near the upper \Vitnesses:

GEORGE A. CLARK, WILLIAM F. KERR.

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