US477865A - William c - Google Patents

Description

(No Model.)

W. C. HOMAN. GENTRAL DRAFT LAMP.

, Patented June 28, 1892.

1145 NORRIS PETE" 00,, mmuruoqwumnmu, n. c.

, 20 top of the lamp-fount, showing the wick-ad- WILLIAM C. HOMAN,'OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE EDWARD MILLER & COMPANY, OF SAME PLACE.

CENTRAL-DRAFT LAM P.

SPECIFICATION forming part of Letters Application filed January 4, 1892.

To all whom it may concern.-

Be it known that I, WILLIAM C. HOMAN, of Meriden, in the county of New Haven and State of Connecticut,' have invented a new Improvement in Central-Draft Lamps; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the to same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a view in vertical section of a lamp provided with a wick-adjusting device constructed in accordance with my invention;

Fig. 2, an enlarged sectional view of the said device; Fig. 3, a detached iplan view of the top of the lamp-fount with the removable ring and the wick-adjusting device taken out; Fig. 4, an enlarged broken plan view of the justing device and the removable ring in position; Fig. 5, a detached broken plan view of the shade-holder; Fig. 6, a sectional view showing a modified construction .of the removable ring to be adopted in case of making the wick-adj usting device non-separable.

My invention relates to an improvement in wick-adjusting devices for central-draft lamps, the object being to produce a simple, convenient, and effective device, combining the advantages of ascrew and a direct thrust action in the adjustment of the wick and extingnishment of the light, respectively.

With these ends in view myinvention consists in the combination, with a wick-band, of adraw-bar attached thereto, a stem connected at its upper end with the upper end of the said draw-bar and provided at its lower end with coarse screw-threads, a tube having a centrally-perforated knurled thumbnut located at its upper end and constructed with internal screw-threads corresponding in pitch to the threads of the stem aforesaid, and a rotatable suspension-sleeve mounted on the tube below said nutand adapted to be removably secured to the said lamp-fount in which it suspends the said tube.

My invention further consists in certain details of construction and combinations of parts, as will be hereinafter described, and pointed out inthe claims.

Patent No. 477,865, dated June as, 1892. Serial nulls-eta (N0 model.)

The wick-band A is of any approved construction, and, as herein shown, arranged for direct sliding contact upon the central-draft tube B, the wick C being applied over the said band and secured thereto by the fastening-ring D. The said band is provided at its lower edge with an outwardlyprojecting shank A, to which is rigidly secured the lowerend of a draw-bar E, consisting of a rod, which passes upward andplays up and down through a slot F opening outward and formed in the outer edge of aremovable ring G,which constitutes the inner portion of the top G of the lamp-fount G The wick-band A, forming the wick-holder proper, is of ordinary construction, and may be replaced by any other suitable means of holding the wick. As herein shown, the said ring G is provided at opposite points in its periphery with bayonet slots or grooves g, located opposite each other and designed for engagement with suitable retaining-points g g, projecting inwardly from the outer portion G of the top of the fount, as shown by Fig. 3 of the drawings. The said ring is secured in place by h rst aligning the vertical portions of its grooves or slots g with the retaining-points g g aforesaid, and then press ing it downward into place and turning it to enter the said points into the horizontal por- 8o tions of the said slots. The upper portion of the draw-bar E is bent outward, and has rigidly secured to it a union or coupler H, which has a long vertical opening H, receiving the upper end of a stem or rod I, the said end of which projects above the said coupler, where it receives a small coupling-nut l, which thus secures the stem to the coupler, and hence to the draw-bar, with which the said stem is par allel. The lower end of this stem is provided with coarsely-pitched screw-threads I which take into correspondingly pitched screwthreads J, formed upon the interior of a tube J, suspended in the lamp-fount by means of a threaded sleeve K, rotatably mounted upon 5 the upper end of the tube betweena shoulder j, formed toward the upper end thereof, and a centrally-perforated operating-nut L, rigidly fastened to the extreme upper end of the tube and extending above thefount, the said stem I00 I passing through and above the said nut. The sleeve K, before mentioned, is provided with threads, whereby it is removably secured in a neck G formed in the top of the fount, whereby it serves to suspend the tube and stem therein.

To guide and support the draw-bar E as it is moved up and down, the ring M of the shade-holder is constructed with a boss M',

having a vertical groove M opening outward I tions thereof, whereby the said bar prevents I the ring G from being rotated, inasmuch as it 1 passes upward through the slot F, formed therein, and as it is firmly coupled with the upper end of the stem 1, which has only verget-her, provision must be made for locking the removable ring G in place without turning it, or, in other words, by some direct v-erti- 3 Such provision is shown in] a modification represented in Fig. 6 of theg tical movement. lock the ring to remove the draw-bar and wick-band from the fount, the draw-bar must 3 be lifted until its lower end has been elevated above the stop N, so that it will be free topass over the same when the ring is rota-ted for being unlocked prior to removal; but

and then pushing the stem downward, so as In order. therefore, to -uncoupling II. It will be apparent that after this the removable ring G may be freely turned. In case, however, it is found desirable to make the wick-adjuster non-separable,

in which instance the upper ends of the drawbar and stem would be rigidly connected tocal movement.

drawings, in which the outer portion of the top ,of the fount is provided with a spring 0,

small opening 0, formed in the removable ring G.

construction the removable ring would be pressed down over the springs, which would then recover and hold the ring in place by their bent upper ends, which would be seized and drawn toward the center of the lamp for 5 This construction releasing the ring again. will be recognized as practically the same device as has been long employed for securing the founts of hand-lanterns in place.

In using awick-adjuster constructed in accordance with the foregoing description the and accuracy by simply turning the operating-nut L, while when it is desired to lift; the wick very quickly or push it down suddenly the coupler is taken hold of and a-direct upward or downward thrust given to the drawbar and stem, which will at once respond to such movement, owing to the coarseness of the threads upon the stem and within the tube, the latter turning idly as the stem and I bar are thus suddenly raised or lowered, as the case may be. I am thus enabled by my construction to combine in one device allthe advantages of the screw and direct-thrust wick-adjusters for lamps.

I would have it understood that I do not limit myself to the exact construction herein shown and described, but hold myself at liberty to make such changes and alterations therein as fairly fall Within the spirit and scope of my invention.

I am aware that it is not broadly new to couple the upper ends of a draw-bar and a stem mounted in the fountand having means applied to it for moving itup and down. I therefore do not; broadly claim such a construction.

I do not in this case broadly claim the removable ring G and the stop N, as they have been claimed in a concurrent application, Serial No. 413,575, filed January 4, 1892.

Having fully described my inventiomwhat 1 I claim as new, and desire to secure by Letters before the ring can be rotated the draw-barf must be disconnected from the screw-stem I, l which is done by removing the small nut I I Patent, is

1. In a wick-ad j uster for central-draft lamps, the combination, with awick-band, of a drawbar attached thereto, a stem connected at its to entirely disengage it from the union or upper end with the upper end of the said bar and provided at its lower end With coarse screw-threads, a tube having a centrally-perforated knurled operating-nut located at its upper end and constructed with internal screw-threads corresponding in pitch to the threads of the stem aforesaid, and arotatable suspension-sleeve mounted on the tube below the said nut and adapted to be removably secured to the lamp-fount in which it suspends the said tube, substantially as described.

2. In a central-draft lamp, the combination,

1 with the fount thereof, of a removable ring forming the inner portion of its top and havextending upward, so as to pass through a ing an open slot formed in its outer edge,

'3 a central draft-tube, a wick-band encircling In practice several such springs; and corresponding openings would be em ployed, or at least two of each. Under that the same, a draw-bar attached to the said band and at its lower end and passing upward through the slot in the said ring,asten cmnected at its upper end with the upper end of the said bar and provided at its lower end with coarse screw-threads, a tube having a centrally-perforated knurled operating-nut located at its upper end and constructed with internal screw-threads corresponding in pitch to the threads of the stem aforesaid, and a rotatable suspension-sleeve mounted on the tube below the said operating-nut andadapted to be removably secured to the lamp-fount in which it suspends the said tube, substanwick may be raised and lowered with care;

tially as described.

3. In a central-draft lamp, the combination, with the fount thereof having a removable ring forming the inner portion of its top-and made with an open slot formed in its outer edge and constructed to be secured in place by a rotary movement, of a draft-tube, a Wickband encircling the same, a draw-bar attached to the said band and passing through the said slot, a stem separably connected at its upper end with the upper end of said bar and provided at itslower end with coarse screw-threads, a tube having a centrally-perforated knurled operating-nut located at-its upper end and constructed with internal screw-threads corresponding in pitch to the stem aforesaid, and a rotatable suspensionsleeve mounted on the tube below the said nut and adapted to be removably secured to the said lamp-fount in which it suspends the said tube, substantially as described.

4:. In a wick-adjusting device for centraldraftrlamps, the combination, with a wickholder, of a draw-bar attached thereto, a stem suspended in the lamp-fount parallel with the said bar and having its upper end threaded, a union or'coupler having a lateral opening to receive the upper end of the draw-bar and a vertical opening to receive the threaded upper end of the stem, a removable nut for the projecting upper end of the stem, whereby the same is secured to the coupler and hence to the draw-bar, and means applied to the stem for raising and lowering it and hence the draw-bar, substantially as set forth, the stem being removable from the union by taking off the. said nut. r

5. In a central-draft lamp, the combination, with the fount thereof, having a removable ring forming the inner portion of its top and constructed with an open slot formed in .its outer edge, of a central draft-tube, a wickband encircling the same, a draw-bar attached atits lower end to the said band and passing upward through the said slot, and a shadeholder provided in its outer edge with a grooved boss forming a long vertical bearing for the said bar, substantially as described.

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

WILLIAM G. I-IOMAN.

1 Witnesses:

HENRY O. WINSLOW, CHAS. E. HOMAN.

Images