US989092A - Gas-lamp. - Google Patents

Description

&. WEDDEBJBUM;

' GAS LAMP.

APPLICATION FILED NOV. 28, 1909.

989,092. Patenteq Apr. 11, 1911.

WITNESSES: IIVVENTOR Z Jaw which the following is a specification.

mantles without increasing the -amount 0 vention. The end desired is attained by di- UniTEn STATES GEORGE WEDDERBURN,

or VIENNA, vmemra.

GAS-LAMP.

Specification of Letters Patent.

Application filed November 29, 1909.

Patented Apr. 11, 1911..

Serial No. 530,297.

To all whom it may concern:

Be it known that L Gr'rono'n \VEDDERBURN, a citizen of-the United States, residing at Vienna, in the county of Fairfax and State ofVirgiuia. have invented certain new and useful Improvements in Gas-Lamps, of

This invention refers to gas lamps of the inverted are type and particularly to the means used for increasing the brilliancy or candle power of the gas mantles.

In the common form. of gas lampsof the inverted type wherein an imperforate globe is usually employed, the air supply is not directed to the immediate zone of combustion .where the mantles are incandescing in such a way as to developthe maximum-of brilliancy or candle power, which they are. capable of developing under a given gas supply. 1

To increase the brilliancy of incandesoin gas consui'ned is the object'of the present inrecting the air supply below the mantlesand' to the Bunsen mixer or barriers in such a way that a proper mixture of heated air and gas is effected in the mixer and a fresh supply of air is brought. to the mantles and flu-me in a strong upward stream. In this manner abundant orq'gen is furnished the incundescing mantles within theimmediate zone of combustion. The circulation of inflowing air and out-fiowin gases thereby induced assists in the e cient exhaust of luirned air and gas.

Another object of the invention is to provide improved means for removably holding the outer cylinder on the supply pipe.

A still further object of the invention is to provide asimple gas valve comprising a needle valve working against a suitable sout and with. a ositive action controlled-by a key operated pinion.

With the almve and other objects in view the invention consists in certain combinations, constructions and' arrangements of parts, clearly illustrated in the accompanying drawings, in which, f

Figure 1 is a vertical sectional view of the lamp, Fig. 2 is a detail perspective view of a transparent air directing sleeve, Fig. 3 is f a detail view of a latch, and Fig. 4 is a def tail vertical sectional view of the controlling I valve, and Fig. 5 is a detail transverse sectional view thereof. l

Referring to the accompanying drawings which illustrate the invention 1 denotes a cylinder which is open at both ends and which is provided with an ornamental head piece 2,-suitably attached to the upper end thereof. On the lower end of the cylinder 1 a number of latch devices 3 are pivotally supported'and each of these latch devices is provided with a pill 4, projecting through the wall of the cylinder. The pins 4 removably hold four cross arms 5, the ends of which are provided with sockets for the re ception of-said pins. The lower ends of the latch devices are'bent outwardly so that they can be easily manipulated. I

the tubes 7 incandescent mantles 8 are' secured, so as to be below the plane of the lower end of the cylinder 1. A Bunseii mixer 9 is secured to the cross arms 5 so as to communicate with the tubes 7, and extends vertically above the arms 5. The upper end of the mixer 9 is connected to the gas supply pipe 11. With the cylinder lan air inlet tube 12 is arranged. The upper end of this pi or tube is flared so as to form a wide air intake. This u per A mantle holding device consisting of arms 6 and depending tubes 7, is fixed to the cross arms '5, and onthe lower ends of end is disposed above the upper endo the 4 r cylinder so as not to obstructthe flow of gases. Thelower end of the'intake pipe or tube 12 is contracted to snugly fit around the casing of the mixer 9,.to which it is suitably secured, as by a screw 13.

The valve casing 10 is formed with vertical guideways adapted to guide arack 14, which is provided on its lower end with a needle valve 15, adapted to close an opening 16in the bottom wall of said valve casing. The valve rack 14 is operated by a pinion 17 secured on a shaft 18, which is provided with a removable key 19, which key extends through the cylinder 1. Aslight turn of the pinion 17 will lift the valve 15 from its seat or opening 16, or place it in a closing position against said seat or opening. This improved valve afiords an easy and sure control over the flow of gas and is always positive in operation.

Above the valve casing 10 a valve casing 20 is secured to the pipe 11, which casing is provided with an operating arm 21, of the usual nature. A pilot tube 22 is connected to the casing above the valve therein and is provided with a screw 23 for regulating the flow of gas therethrou'gh. This pilot tube or pipe is passed through the upper end of the 1ntake tube and terminates in a burner or ]et 24:, which is held near the mantles 8,

so that'the same can be brought to incandescence without a match, as in the ordinary construction. The arm 21- is provided with suitable chains or other means for operating the same.

On the lower end of the cylinder 1 a globe support 25 is secured at 26. This globe support isflared downwardly and outwardly of the cylinder so that-a spaceis formed be tween the lower end thereofland the adjacent portion of the cylinder. The flared lower end'of 'the globe support 25 is pro I the inlet openings 27 to the imme iate zone vof combustion or to the lower part of the mantles, so that a positive upward current of fresh air'will be created at this point, an air directing sleeve 31 is slidably secured, being frictionally held in place, to the lower end of the cylinder 1. This sleeve is made of mica, lass or other suitable heat resist- .ing material of a transparent nature, and is provided with hand holds 32, whereby the same may be adjusted on the cylinder 1. The best results are secured by arranging the lower end of the sleeve 31 below the lower tips of the mantles, as shown in Fig. 1,

When gas is supplied to the mantles by opening the upper valve and said gas is ignited so that themant-les will be brought to a state of incandescence, an increased amount of candle power or brilliancy will be developed in the mantles. Thewide air intake pipe or tube 12 will permit an abundance of air to be conveyed to the Bunsen mixer 9,

without resistance, and the air'in passing through said tube or pipe 12 will be effectively heated by'the gases rising'm the cylinder 1, from the mantles 8, so that the illuminating power of the mixture produced in theqnixer will be increased, as a result of the' heating. .The upward movement of the escaping gases will assist in drawing air through theinlet openings 27' so the flame of the mantles will be served by a strong stream'of fresh air, directed by the sleeve 31 to the immediate. zone of combustion or to the lower part of the mantles. It is thus seen that the escaping heat and gases are utilized to stimulate the flow of fresh air to the Bunsen mixer. and to the mantles di rectly. l he result of this arrangement is that a remarkably high degree of brilliancy is produced by the heated mantles.

Photometrical' tests have established the fact that the im roved lamp will'give from sixty to a 'hun red per cent. more candle power of illumination than the best of the ordinary incandescent gas mantle lamps in current use, comparing lamps of equal mantles, while with a ground glass globe a very soft and pleasing light is produced.

In order to dismantle the lam the globe 28 is first removed and the holding arms 5 are disengaged from the latches 3, and the key 19 removed from the socketed end of the valve stem 18. When this has been done the entire cylinder can be moved downwardly from the pipe 11, and any adjustment or change desired can be effected. The man midway of the cylinder ends burners having mantles depending from the mixer, and an air inlet preheating tube of smaller diameter than the cylinder provided with a contracted lower end secured to the mixer and a flared upper end projecting above the upper end of the cylinder.

2. In combination, a cylinder having open ends, a supply pipe within th'e cylinder, a

Bunsen mixer on the lower end of the supply pipe and above thelower end of the cylinder, a mantle holding device connected with the mixer, an air intake preheating tube connected with the mixer, mantles on the holding device depending below the cylinder, a sleeve on the cylinder depending below the mantles, and an air inlet device secured to the cylinder above the sleeve.

3. In combination, a cylinder having open ends, a supply pipe within the cylinder, a mixer on-the supply pipe, holding arms hav ing s'ocketediends on the mixer, and latches on the cylinder having pins adapted to fit into the socketed ends of the holding arms for holding said arms in place thereon.

4.. In combination, a cylinder having open ends, a supply pipe within the cylinder, a mixer connected with the supply pipe, mantles depending from the mixer, and an air inlet preheating tube having a contracted lower end and a flared upper end within the cylinder with saidlower end secured to the mixer and said upper end projecting above the cylinder.

5. In combination, a supplypipe, a mixer on the'lower endof the supply pipe, a valve with a flared upper end extending above and over the mixer, a mantle holding device supported on the lower end of the mixer, arms extending laterally of the holding de- 5 vice, said arms having their ends socketed a cylinder of considerably larger diameter than the preheating tube surrounding said tube, latches on-the cylinder engaging the socketed ends of the arms of the holding de- 10 vice, mantles on the holding device, a sleeve on the lower end of the cylinder, and a globe supported on the cylinder surrounding the mantles.

in testimony whereof I zn'inf my signature in presence of two Witnesses.

GEORGE 'WEDDERBURN.

Witnesses I p EDWIN B. SALISBURY, N. ABRAMsON.

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