US477863A - Fhoto-utho - Google Patents

Description

(No Model.)

W. G. HOMAN. WIGK RAISER'POR CENTRAL DRAFT LAMPS.

No. 477,863. Patented June 28, 1892.

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' UNITED STATES; PATE T OFFICE;

. WILLIAM C. I'IOMAN, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE EDWARD MILLER & COMPANY, OF SAME PLACE.

WICK-RAISER FOR CENTRAL-DRAFT LAMPS.

SPECIFICATION forming part of Letters Patent No; 477,863, dated June 28, 1892.

Application filed November 30,1891. Serial No. 413,574. (No model.)

To all whom it may concern.-. the bearing-tube and prevents the downward Be it known that 1, WILLIAM C. HOMAN, of movement of the sleeve, while the inner end Meriden, in the county of New Haven, and of the nut engages with the extreme end of State of Connecticut, have invented a new the bearing-tube and prevents the upward 5 Improvement in Wick-Adjusters for Centralmovement of the sleeve, whereby the same is Draft Lamps; and I do hereby declare the held against longitudinal movementin either following, when taken in connection with acdirection, but is free to rotate. The wickcompanying drawings and the letters of refband F, encircling the draft-tube B, is of orerence marked thereon, to be a'full, clear, and dinary construction, and has connected with 1o exact description of the same, and which said it the bent lower end of the short leg G of drawings constitute part of this specification, the bowed adj usting-bar, the said leg playand represent, ining up and down through an open slot H, Figure 1, a view, partly in side elevation extending outwardly from the inner edge of and partly in vertical section, of a lamp conthe top of the lamp-fount. The long log G" I5 structed in accordance with my invention; of the said adjusting-bar, which is prefer- Fig.2, a detached View in side elevation of ably formed from a heavy .rod or wire, isthe wick-band and adjusting-bar; Fig. 3, a straight and extends down through the detached sectional view of the long screwthreaded sleeveD,before mentioned, through threaded sleeve, to the lower end whereof the the centrally-perforated operating-nut E, at- 2o operating-nut is attached. tached to the lower end thereof, and projects My invention relates to an improvement in below the said nut, its projecting lower end wick-adjusters for central-draft lamps, the being threaded to receive the retaining-butobject being to produce a simple, durable, tonl, which has the twofold function of preeifective, and convenient device adapted for venting the said leg of the bar from being 25 direct manual operation through its upper drawn out of the bearing-tube and threaded end or operation by a nut through its lower sleeve and of affording a means for raising end, as found most convenient. and lowering the bar by direct or plunging With these ends in view my invention conaction through the lower end of its said leg. sists in awick-adjuster having certain details The long vertical loop formed by the upper 0 of construction and combinations of parts, as portions of the said legs of the bowed adj ustwill be hereinafter described, and pointed ing-bar forms a handle for grasping the same out in the claims. for direct manual operation from the top of The fount A and central draft-tube B of the lamp-fount. The said long leg G of the the lamp are of ordinary construction, except bar is provided about midway of its length 3 5 that the former has mounted in it at a point and, as herein shown, slightly above its longito one side of the said tube avertical bearingtudinal center with a double spiral thread J, tube C, which passes through the oil-chamber the same being formed upon the surface of a and projects a very little out of the fount at short sleeve J, fixed upon the bar. As hereits upper and lower ends, at which points in shown, the said double screw-thread con- 0 40 it is soldered or otherwise sealed, so as to pretains about two turns and is of very coarse vent any escape of oil from the fount. A pitch, in which it corresponds to the pitch of long internally-threaded sleeve D is located the thread D of the sleeve D, the said thread within the said bearing-tube, extending nearly D consisting, as herein shown, of a rectanguto the upper end thereof and constructed at lar wire formed into a coarse spiral and se 5 45 its lower end with a neck D, which, passes cured to the inner face of the sleeve, which through the contracted lower end of the tube may, however, if desired, have the thread and receives the centrally-perforated operatformed in it by an obvious process analogous ing-nut E, which is rigidly secured to the said to beading; but however the threads of the neck. A shoulder d, formed between the bar and sleeve are formed it is designed that I00 50 lower end of the said sleeve D and its neck they shall be so coarse in pitch as to permit D, rests upon the contracted lower end of the bar to be raised and lowered by taking hold of the long loop at its upper end and by taking hold of the knob I, attached to its lower end. In such operation of the bar the sleeve and its nut would be rotated in one direction or the other, according to the way in which the bar was moved, the friction of the described rotation of the sleeve being reduced to the minimum by contracting its lower end to form the neck Dand shoulder d, thelatter resting upon the contracted lower end of the bearing-tube C. The object of making the threads very. coarse is of course to reduce the friction of their operation and permit the bar to be plunged, so to speak, up and down.

I do not limit myself to the use of double threads J on the bar but threads so constructed reduce the wear and friction of operation greatly.

To operate the bar from its lower end by the nut E, the same is grasped between the fingers and turned, whereby the bar is operated directly through the sleeve. To remove the bar, the retaining-button I is taken off, after which the bar and the wick-band may be drawn out of the lamp integral or without dismemberment, the sleeve and nut remaining in their normal positions.

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 as fairly fall within the spirit and scope of my invention.

I am aware that it is old to provide a lampfount at a point to one side of its center with a Vertical bearing-tube to contain an internally-threaded rotatable but longitudinally-immovable sleeve receiving the longleg of a wick-adjuster and furnished at its lower end with a nut by which it is rotated to move the said wick-adjuster up and down by screw action; and I do not, therefore, claim that construction, broadly.

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

1. In a central-draft lamp, the combination, with the fount and draft-tube thereof, of a bearing-tube mounted in the fount to one side of the said draft-tube and projecting at its upper and lower ends through the fount, a long rotatable sleeve having an internal thread located within the said tube, in which it is held against longitudinal movement, a centrally perforated operating nut rigidly connected with the lower end of the sleeve, a wick-band encircling the draft-tube, a bowed adj usting-bar having its short leg attached to the said band and its long leg passed downward through the said sleeve, through the centrally-perforated nut connected with the lower end thereof, and provided with a coarse thread taking into the internal thread of the sleeve, and a removable retaining-button attached to the projecting lower end of the long leg of the said bar, the threads of the sleeve and bar being constructed so coarse in pitch as to permit the bar to be vertically reciprocated manually by direct or plunging movement from its upper and its lower end, substantially as set forth.

2. In a'central-draft lamp, the combination, with the fount and draft-tube thereof, of a bearing-tube mounted in the fouut to one side of the draft-tube and projecting at its open upper and lower ends from the fount, alonginternally-screw-threaded rotary sleeve located within the said tube and constructed at its lower end with a neck which projects from the lower end of the bearing-tube, a centrally-perforated nut attached to the said neck at the lower end of the sleeve, a wick-band encircling the draft-tube, a bowed adjustingbar having a short leg and a long log, the former being attached to the said band and the latter being passed downward through the said sleeve projecting through the centrally-perforated nut at the lower end thereof and provided with a coarsely-pitched double thread co-operating with the internal thread of the sleeve, and a retaining-button removably attached to the said projecting lower end of the long leg of the bar, the threads of the sleeve and bar being so coarsely pitched as to permit the same to be operated manually by direct or'plunging movement from its upper and its lower end, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscrib- Witnesses:

S. D. HANNEY, W. L. BABoooK.

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