US541281A - Augustus h - Google Patents

Description

(No Model.)

A. H. JONES.

WIOK ADJUSTING DEVICE FOR CENTRAL DRAFT LAMPS.

No. 541,281. Patented June 18, 1895.

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UNITED STATES PATENT OFFICE.

AUGUSTUS H. JONES, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE MERIDEN BRONZE COMPANY, OF SAME PLACE.

WlCK-ADJUSTING DEVICE FOR CENTRAL-DRAFT LAMPS.

SPECIFICATION formingpart of Letters Patent No. 541,281, dated June 18, 1895.

Application filed F r ary 4, 1895. Serial No. 537,189. on model.)

To all whom it may concern.-

Be it known that i, AUGUSTUS H. JONES, of Meriden, in the county of New Haven and State of Connecticut, have invented a new Improvement in Wick-Adjusting Devices for Central-D raft Lamps; and I do hereby declare the following, when taken in connection with the accompanying drawing and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawing constitutes part of this specification, and represents a view, partly in elevation and partly in section, of one form which a wick-adjusting device constructed in accordance with my invention may assume.

My invention relates to an improvementin that class of wick-adjusting devices for central draft lamps which provides for the direct plunging and lifting of the wick through the medium of a draw-bar, and a fine adjustment of the wick through the medium of arotatable finger-button, the object of my present invention being to produce a simple, compact, and effective device of the character described, designed with particular reference to cheapness and facility in construction and assemblance of its parts.

With these ends in view, my invention consists in a wick-adjusting device having certain details of construction and combinations of parts as will be hereinafter described, and pointed out in the claims.

In carrying out my invention, I employ a tubular screw A, having an external screw-. thread A', of coarse pitch formed in it in any approved manner, as by indenting it, and extending substantially throughout its length,-

though terminating below its upper end, where the tube has a circumferential recess A formed in it in any desired manner, at a right angle to its longitudinal axis; but however made, the tube will be uniform in diameter, or substantially so, throughout its entire length. As herein shown, the tube is drawn with its lower end closed, and its upper end open, but I do not limit myself to that construction. The said tube is suspended in the lamp-fount B by means of a suspension nut, as herein shown, formed from a single piece of sheet-metal, and comprising a knurled overhanging edge or flange C, an exterioi'ly threaded shank C, and acen'tral downwardly extending hub C the lower edge of which is spun into the circumferential recess A formed in the upper end of the tube, as before described, whereby thetube is connected with the suspension nutin which it is free to rotate in either direction, but in which it is held against longitudinal movement. The shank C of the suspension nut is screwed into an internally threaded nipple B, mounted in the lamp-fount, in the usual manner, the knurled flange C of the nut resting upon the flanged upper edge of the said nipple.

It will be understood that the internal diameter of the hub C of the suspension nut, practically corresponds to the external diameter of the tubular screw which projects above the upper face of the nut.

The screw is rotated in one direction or the other by means of a knurled finger-button D, constructed in its lower face with a centrally arranged, circular counter-bore or recess D, corresponding in diameter to the external diameter of the screw A, the projecting upper end of which is entered into the said recess,

and soldered or otherwise secured thereinto, so that the finger'button bears, directly or indirectly, upon the upper face of the suspensionnut, from which it is, by preference, separated the suspension nut and screw, and then spin the edge of the hub of the not into the circumferential recess of the screw. Then I shall pass the washer over the projecting upper end of the screw, and then apply the finger-button to the projecting end of the screw, to which I shall secure it by soldering, or otherwise.

The screw may be connected with the wick for the fine adjustment thereof, in any approved manner. As herein shown, the wick is carried upon the central draft-tube by a wick-band F, having a horizontally arranged socket F, receiving the inner end of a horizontally arranged reach G, the outer end of which has secured to it a vertically arranged,

short, sheet-metal collar G, having a short internal thread G corresponding in pitch to the thread A of the tubular screw A, into which the thread G takes.

It will be obvious that when the tubular 5 screw is rotated in one direction or the other, the said collar G and the reach G, and hence the wick-band, will be raised and lowered. I do not, however, limit myself to the particular means shown and described for connecting the IO wick-band F with the tubular screw.

For the direct adjustment of the wick by plunging and lifting the same, I employ a straight, vertically movable draw-bar H, having bearing in a short sleeve B mounted in the top of the lam p-fount. The lower end of this bar is threaded, and enters a vertically threaded opening G formed in the horizontal reach G. The upper end of the bar H, projects upward above the lamp-fount in position to be engaged by the fingers for being pushed downward for plunging the wick, or being lifted for raising the same. WVhen the draw-bar is pushed downward for plunging the wick, the tubular screw A and its fingerbutton D, are forced to idly rotate in one direction, while when the draw-bar is lifted for directly raising the wick, the screw and fingerbutton are obliged to idly rotate in the opposite direction.

The described idle rotation of the tubular screw and finger-button when the wick is being plunged or lifted, does not practically hamper the manipulation of the draw-bar, because the pitch of the thread A of the tubular screw A, and the pitch of the thread G of the threaded collar G, is so coarse that the tubular screw responds and turns under the upward or downward draft of the collar. As herein shown the draw-bar has a reversed 4o end H, which extends downward into the upper end of the tubular screw A, through a central opening D formed in the finger-button D. The reversed end of the draw-bar as thus arranged, serves to steady and guide the same, and I prefer to employ such a construction, but that is not necessary, for the said reversed end may be dispensed with, and the upper end of the draw-bar provided with a knob H as indicated by broken lines.

If desired, the draw-bar may be removed and discarded altogether, as for instance, when the. wick is short, and the draw-bar has to be lifted so high as to interfere with the globe-holder; but the removal of the d raw-bar under my construction, in nowise interferes with the perfect action of the tubular screw for raising and lowering the wick, the action of the draw-bar and screw being entirely independent of each other, except so far as the finger-button in the construction shown, serves to guide and steady the draw-bar.

In view of the changes suggested, and of others which may obviously be made,I would have it understood that I do not limit myself i to the exact construction herein shown and described, but hold myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a wick-adjusting device for centraldraft lamps, the combination with an externally threaded, sheet-metal, tubular screw of uniform or substantially uniform diameter throughout its length, and constructed near its upper end with a circumferential recess; of a wick-carrier with which the screw is connected through-the medium of its external threads, a suspension-nut having a centrally 8 dependinghub, the edge of which is spun into the circumferential recess formed in the screw, whereby the nut and screw are swiveled together, and a finger-button having its lower face recessed to receive the projecting upper end of the screw over which it fits and to which it is rigidly secured, so as to bear upon the said suspension nut, substantially as described.

2. In awick-adjusting device for centralqo draft lamps, the combination with an externally threaded, sheet-metal, tubular screw of uniform or substantially uniform diameter throughout its length, of a wick-carrier with which the screw is connected through the 5 medium of its external threads, a suspension nut in which the screw is swiveled, and above which the screw projects, a finger-button having its lower face recessed to receive the projecting upper end of the screw over which it ace fits and to which it is rigidly secured so as to bear upon the said nut, and a draw-bar having bearing in the lamp-fount, connected at its lower end with the wick-carrier independently of the connection of the same with the :05 external threads of the screw and having its upper end reversed and extended downward into the upper end of the tubular screw through a central opening formed in the finger-button, which forms a bearing forit sub- 1 IO stantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

' AUGUSTUS. I-I. JONES. lVitnesses: t

E. A. MERRTMAN, D. S. DALTON.

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