US1132365A - Cluster incandescent lamp. - Google Patents

Description

T. J. LITLE, JR. GLUS'IER4 INGANDESCENT LAMP. APPLICATION FILED MAY- 6,

Patented Man-16,1915.

2 SHEETS-SHEET 1.

wlrNEssEs THE MORRIS PETERS CO., PHO'IU-LITHO., WAS`HINGTON, D. C`

THOMAS JAMES LITLE, JR., OF WOODBURY, NEW JERSEY, rASSIGN'OR TO WELSBAC LIGHT COMPANY, OF GLOUCESTER CITY, NEW JERSEY, A CORPORATION 0F NEW JERSEY.

CLUSTER INCANDES'CEN T LAMP.

Specification of Letters Patent.

Patented Mar.. 16, 1915.

Application filed May 6, 1914. Serial No. 836,663.

T0 all @07mm t may concern Be it known that I, THOMAS J. LITLE, J r., a citizen of the United States, residing at Woodbury, Gloucester county, State of New Jersey, have invented a new and useful Improvement in Cluster Incandescent Lamps, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speciication, in which: Y

Figure 1 is a central vertical section of a lamp constructed in accordance with my invention. Fig. 2 is an enlarged sectional view of the valve, and Figs. 3 and 4 are cross sections of the valve on the line III-III of Fig. 2, showing it in open and closed position, respectively.

My invention relates to the class of cluster incandescent lamps for using inverted mantles and is designed to provide an improved lainp of this character.

The invention relates particularly to the cock control mechanism as Well as to the Bunsen type arrangement and gas supply connection therefor, arranged within the globe. In this type of lamp the question of the cock control has been a difficult one, as these lamps are usually hung above the reach of the operator and the valves have been usually operated by depending chains secured to the valve lever.

My invention is designed to improve the cock and provide for movement of its movable member through a plane at right' angles to the axis of the pipe which it controls.

It is also designed to do away with the springs used for keeping the valve tight as well as to give easy access to the parts.

In the drawings, 2 represents a dependinggas supply channel which may be screwed up into the gas supply pipe and is provided with a stationary frusto-conical plug section 3 having a -transverse closing web 4. Through the side of the casting, holes 5 and 6 open outwardly above and below the web 4 and on this stationary frusto-conical plug fit-s the horizontal movable valve casing 7 having a corresponding frusto-conical interior surface fitting on the plug. This casing is cut or grooved out, as shown at 8, so

' that this cut out portion may register with the holes 5 and 6 in one position, as shown in Fig. 3, thus allowing the gas to flow. This casing rests by gravity on the frustoconical plug and the securing ring 9 above it acts merely to prevent its displacement as no substantial pressure is needed to hold it 1n its proper position. Thus, no spring is needed to keep the parts of the cock in proper contact as in ordinary right angle cocks. A

To supply the pilot light tube 10, a hole 1 1 is bored upwardly through the projection 12 and the conical plug, to a point above the web 4. The. end of this hole is closed by a screw plug 13 and the passage 11 leads into a passage 14 bored into a projection, the end thereof being closed by screw plug 15. For the horizontal turning of the valve casing a bent lever 16 may be provided, this being secured to a projection 17 of the casing andbeing adapted to be actuated by an operator using a stick or rod and pushing this around horizontally to open or close thevalve. Fig. 4 shows the valve casing turned into closed position, the gas, of course, flowing through the pilot ligllit channel, as this is independent of the coc rThe casing 18 of the lamp may be of any desirable form, but is arranged to supply air to the mantles.` It is shown as provided with the usual chimney ornamental casings, hood etc., and is adapted to support a globe 18a. The gas supply pipe 19 leading from the valve casing is screwed into the closed top flange of the burner manifold 20.

As I find there is a decided advantage in mixing the gas and air in a vertically eX- tending mixing tube before passingto the burners, I tap off the gas from the pipe 19 to a side depending tube 21 leading to the upwardly projecting orifice 22 controlled by the needle having anadjus'table screw 23. The mixer tube 24 is supported directly above the jet opening with the air inlet between and this mixer tube leads upwardly into the manifold 20 vfrom whence the branch arms 25 lead outwardly and downwardly to the series of burner It will be noted that this structure provides for the upward How of the gas and air mixture to the manifold without any depending boX below and outside of the glass globe, which would cast shadows and is unsightly. There is a small central hole in the lower end of the globe merely to reach the adjusting screw for controlling the gas.

The advantages of my invention result from the valve or cock mechanism shown and also from the structure of the gas and air mixture supply system.

Many changes may be made in the form and arrangement of the Valve, the method of actuating the same, the position of the valve, etc., without departing from my in- Vention.

The gas and air supply system may also be Varied within the scope of my broader claims.

l claim:

l. In a cluster lamp, a main gas supply pipe forming the support for the lamp, a Valve in said pipe for controlling the flow of gas therethrough, a manifold supported on the lower end of said pipe, a plurality 0f radially extending burner arms connected to said manifold and communicating therewith, a mixing tube extending downwardly from said manifold and communicating therewith, a Valve casing below said mixing tube having a et orifice directed toward the opening of the mixing tube, a needle Valve within said casing for controlling the flow of gas through the j et orifice, and a pipe on the exterior of the manifold and mixing tube connecting the main gas supply with the valve casing; substantially as described.

2. ln a cluster lamp, a main supply pipe, a lamp casing connected thereto, a va ve for controlling the flow of gas through said pipe, a manifold connected to the lower end of said pipe, a plurality of radial burner arms connected to the manifold and coin-- municating therewith, a mixing tube concentric with the main supply pipe connected to the lower end of the manifold and communicating therewith, an eccentrically disposed gas pipe connected to the main gas pipe 'above the manifold on the exterior thereof, a fitting connected to the lower end of the eccentrically disposed gas pipe and supported thereby, there being a jet orifice in said fitting in line with the lower end of the mixing tube, a needle Valve within said fitting for controlling the supply of gas passing through the jet orifice, and an adjustable tube telescopically engaging the mixing tube and supported from the eccentrically disposed gas pipe; substantially as described.

3. A cluster lamp having a main supply pipe concentric therewith, a lamp casing connected thereto, a manifold connected to the lower end of the supply pipe but not communicating therewith, a plurality of radially disposed burner arms connected to the manifold, a mixing tube connected to the lower end of the manifold and communieating therewith, said mixing tube being concentric with the supply pipe, a jet orifice below the lower end of the mixing tube for supplying gas to the mixing tube, and a gas supply pipe communicating with the jet orifice and connected to the main supply' pipe above the manifold, said supply pipe being eccentric to the main supply pipe and the mixing tube, substantially as described.

ln testimony whereof, l have hereunto set my hand.

THOMAS J AMES LTLE, JR.

VVitnesses z J. H. JOHNSON, EDGAR LENBON.

Gopies of Vthis patent may be obtained for ve cents each, by addressing the Commissioner of .Patents Washington, D. C.

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