US75483A - Cornelius st - Google Patents

Description

@with `tutta @anni fftrr.

Letters Patent No. 75,483, elated March 10, 1868.

'LMPROVEMENTTN LAMlD-BURNERS.

@La gagnait munt it in tlpse tritrrs glntnlt mit mating gaat tt tte sana.

TO `ALL PERSONS TO WHOM THESE PRESENTS MAY COME:

513e it known that T, Co-RNELIUS ST. JOHN, of Charlestown, in the county of Middlesex, and State of Massachusetts, have inventeda new and useful Improvement in Lamps; and I do hereby declare the same to be fully f described in the following specification, and represented in the accompanying drawings, of which- Figurel is a front elevation,

Figure 3 a side elevation, and

Figure 4 a vertical section of a lamp-burner provided with my invention.

l' Insuch drawings A denotes the wick-tube, B the cap-screw, and C the conical air-detiector and chimney. holder of' a lamp.

There is allixed to thc part C, which is foraminous or perforated, a cup, D, whose sides, a a, and bottom, b, are perforated with numerous holes, the said bottom also being made with a hole or passage, e,1 eading through it. This passa-go is for reception ofthe wick-tube, which slides freely within andthrough' the bottom of the cup, and also in and through the cap-screw B, and may be provided with a. means or mechanism for elevating or depressingr the wick within the tube. This mechanism is shown in the drawings 'as consisting of' two spurwheels, d d, and a shaft, e, vfor revolving them, such shaft having a milled head or buttomf, fixed on one end oi' it, and being supported in bearings or projections g g, extended from one side ofthe tube.'

The air-defiector and chimney-supporter C is to be supported on thc cap-screw B by 'means ot' two standards, E E, or the equivalent thereof, the same being so that there may be a. clear or open space about the wick-tube and'underneath the chimney-supporter, in-ordcr that, without removal of the chimney vor air-deieetor, ready access maybe had to the wiel: at the top of the wick-tube; when such top ot' such tube may be depressed below the chimney-supporter, or the foraminous -cap D aihxed thereto. Thus, by my invention, the wick can be got at for being trimmed without thcnecessity of first removing the cone and chimney, or either, from the rest of the lamp. l I l i v Moreover, it will be seen that, by means of the foraminous cup D, the dame will be guarded from draughts of air tendingA to cause it to dicker, and that the supply Iof air for the deflector will pass through the-bottom and sides of the cup, but in case the said bottom only be perforated., the air will pass through it. n this way, vertical columns of air may be supplied tothe dame ofthe wick.

A brace, K, extended from the opposite edges of the wick-tube, to-and around the two standards, may be employed to steady the tube while being moved eitherv up or down, the brace being adapted to the standards so as to be capable of being frcelyslid up and down onthem. A. horizontal section, taken through the said brace, is shown ih tig. The chimney may-be held upon its holder` by springs, l Z, or by other suitable means. By applying the hand to the shaft e, the wick-tube may bemoved vertically.

y I do not claim the mere application ofa wick-tube so as to' be capable of being moved vertically with respect to or towards and away from the' cone or air-delcctor of a lamp.

l I am aware' ofthe patent of M. B. Dyott, No. 37,281, dated January 6, 1863, which covers a lamp-burner constructed of two parts, connected together by slotted spiral arms and pins, the same bein-g' to admit of the raising .and lowering of the chimney, its -supporter and airfdeiicctor, with, respect to a stationary widk-tube. Iv-make `no claim to this. My invcntionis a decided improvement with reference thereto, as in my lamp the chimneyand by means ofthe doviccsfor raisingithc wick.

i In Dyotts lamp, the lingers of a person have to be applied tothe chimney-supporter to revolve it in order to elevato it with reference' to the wick-tube. Such is liable to burn thcingers, as the supporter is generally quite het when the lamp is in'usc. By my construction the fingers are applied to the shaft e or its buttonfin order to efi'eet the movements ofthe wick-tube,- and this without any danger of burning them. Furthermore, I am obliged to make no rotary movement of thc'chimney,its supporter, and air-clelector, in order to expose the top ofthe wiclc-tube. Furthermore, my wick-tube is guided intol the part D by the guide part K.- Therefore,

supporter Aand air-dciiectorl are all stationary, the wick-tube being movable vertically with reference to them,

In combination with Athe wick-tube applied to the cap-screw or lamp-body,' so as to ige movable vertically, relatively to the air-deilector or chimney-supporter, substantially in manner as specified; I claim the foraminous cup or guard D, made and arranged with the cliiinney-support-er'and the air-dcector, substantially as specified.

I also-claim the combination and arrangement of the guide K, with the standards E E, and the chimneysupporter C, and the part D, applied thereto as specified.

I also claim the improved lamp-burner as composed of the chimney-holding springs l Z, the chimneysupporting con@I and ar-deflector C, the perforated cup D, the standards E E, thc screw-cap B, and the wick-tube A, and its guide K, arranged as described, and having the wick movable in the cap B and guide K, by means and in manner asdescribed.

CORNELIUS SILJOHN.

Witnesses:

R. H. EDDY, F. I. HALE, Jr.

Images