US440078A - Thomas wall - Google Patents

Description

(No Model.)

. T WALL LAMP BURNER.

No. 440,078. Patented Nov. 4. 1890.

UNITED STATES PATENT OEETCE.Y

THOMAS WALL, OF BROOKLYN, NEW`YORK, ASSIGNOR TO IIIMSELE AND ROBERT SEALY, OF SAME PLACE.

LAMP-BURNER.

SPECIFICATION forming part of Letters Patent No. 440,078, dated November 4, 1890. Application filed January 24, 1889. Serial No. 297,437. (No model.)

To all w/wm it may concern:

Be it known that I, THOMAS WALL, of the city of Brooklyn, county of Kings, and State of New York, have invented a new and useful Improvement in Lamp-Burners, of which the following, taken in connection with the accompanying drawings, is a full, clear, and accurate description. Y

In the drawings, Figure l. represents aside view of the improved burner complete. Fig. 2 is a section of the improved burner on the line @ccc of Fig. Fig. 3 is a plan View of the invention. Fig. 4 is a vertical section on the line 4C 4, Fig. l.

Similar letters of reference refer to similar parts. 4

My invention relates to burners for streetcar lamps. Owing to the peculiar construction of the lamp-boxes used on street-cars it is necessary that the lamp-founts shall be made about twice as long as they are wide. On the inside and back end of the lamp-box are reflectors placed at an angle, and in order to obtain the full candle-power of the light from the lamp it is necessary that the burner should be adjusted to the lamp-body in such a manner that the wick-tube shall stand parallel with the length of the lamp-fount. The lamp-burners now in use on street-cars are adjusted to the lamp-fount by means of screw-threads cut on the lower portion of the burner and corresponding screw-threads cut on the collar of the lamp-fount, so that when the burner is securely fastened to the lampfount it will often happen that the wick-tube will be at an angle instead of being parallel with the length of the lainp-fount, as it lproperly should be.

The object of this invention is to construct a lamp-burner so that at all times the wicktube can be adj usted parallel with the length of the lamp-fount. y I effect this by making that portion of the burner bearing the screwthread an independent piece, held in the cap covering the bottom of the burner, and providing means by which said independent screw-thread piece can be turned in said cap, and when adjusted to the' 'right position held firmly in said position.

In the drawings, A represents the independent screw-threaded piece fitting loosely into the cap B. This piece A is provided with a flange a cut into cogs or teeth a, as shown in Fig. 3. The cap Bis provided with a rim b, upon which the flange u. rests, and it is also provided with a stop or lug C of a size to fit loosely between the cogs a of the piece A. The springs S, serving to hold the chimney in its place, press with their lower edges against and upon the flange a, which serves to keep the piece Ain position when adjusted, while there is play sufficient to enable said piece A to be adj usted in position. Vhen detached from the lamp, this play is given by removing the cap H surrounding the wicktube, and which when in its place forces the springs S into position firmly against the outer case of the burner D, also against the flange a ofthe piece A.

The operation of my invention is as follows: The pieces of the burner being in position as shown in Figs. l and 2, the burner is screwed upon the lamp-fount. If it so happens, as it almost always will be the case, that the wick-tube, when the burner is screwed tightly on the lamp-fount, is at angle with its length, that the burner should be removed from the lamp-fount and the piece A adj usted, this is accomplished by first removing the cap I-I, which, as before said, loosens the tension of the springs S upon the piece A. The piece A is then pressed upward until the flange a passes above and is clear of the lug C. The piece A is then turned slightly so as to bring the space between other cogs than was originally the case 1n line with and over the lug C.` The pieceA is then pulled down, allowing the lug C to lit between this space, and the cap ll being adjusted, it would be found upon screwing the burner to the lampfount that the angle at which the wick-tube stands has been changed. This operation can be repeated unt-il it is found that the wicktube when the burner is adj usted to the lampfount is parallel to the length of the said lamp-fomit. A very little practice will enable one to make this adjustment at the first operation.

Having I claim as new, and ters Patent, is-

l. A lamp-burner provided with a screwthus described my invention, what desire to secure by Let- IOO threaded piece having a cog-Hange held a', the cap B, having a rim Z2, and lug C, springs loosely in position in the lower portion of the S, and cap H, arranged as shown and deburuer by means of a rim on said lower porscribed.

tion, havinga stop or lug fitting between the In testimony whereof I have hereunto set 5 cogs of said screw-threaded piece, said cogged my hand this 5th day of July, 1888.

ange being held firmly in position by the n pressure of Jche lower ends of the ehirnneylHOMAS WALL' holding springs, as described and shown. In presence of- 2. A lamp-burner provided With a serew- LOUIS W. FROST, 1o threaded piece A, having a flange a and @ogs ROBERT SEALY.

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