US1137989A - Gas-lamp. - Google Patents

Description

J. LEDERER GAS LAMP.

APPLlC/xTION FILED FEB. 8, 1913.

Patented May 4, 1915.

2 SHEETS-SHEET I.

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THE NORRIS PETERS 60.. PHOTO-LITHO.. WASHINGTON. D. C

J. LEDERER.

GAS LAMPL APPLICATION FILED FEB. 8. 1913.

Patented May 4, 1915.

2 SHEETS-SHEET 2 ETERS ca, PHOm-LITHQ. WASHINGTON, D4 C.

JOSEPH LEDERER, OF NEW YORK, N. Y.

GAS-LAMP.

Application filed. February 8, 1913.

To all whom it may concern Be it known that I, JosErH Lnonnnn, a citizen of the United States, and a resident of the city, county, and State of New York, and whose post-office address is 237 Lafayette street, New York city, New York, have invented certain new and useful Improvements in Incandescent Gas-Lamps Furnished with One or Plural Burners, of which the following is a specification.

The invention resides in certain novel features concerned with the control of the delivery of the Bunsen mixture to the burner nozzle or tip, by which I am enabled to regulate the mixture perfectly under all conditions, and control the delivery of the mixture to the burners.

Reference is had to the accompanying drawing, which illustrates the preferred con struction of the device.

In these drawings Figure 1 is a vertical section of the complete lamp; Fig. 2 is an enlarged section of the gas supply cock and regulator; Fig. 3 is an elevational view of the arm and pawl and ratchet for operating the gas cock; Fig. 4 is an enlarged section of the check; Fig. 5 is a sectional plan view of Fig. 4:, on the line 55; and Fig. 6 is an enlarged detail view of the air supply device.

In Fig. 1, 10 indicates the casing of the lamp, which is of metal suitably constructed, and carrying at its lower end a glass globe 11 in which the mantles 12 are located. The drawings show a plurality of mantles, though my invention may be readily adapted to a single mantle.

The gas is supplied through a tube 14: (see Fig. 2) to a valve fitting 15 which has a screw 16 thereon by which the gas flow is throttled. The screw 16 is fitted with a spring 17 which prevents the screw from coming loose. By adjusting this screw the gas flow to the valve 18 may be regulated. 19 is a bypass tube to supply the pilot burner 20, and 21 is a needle valve for regulating the gas flow through the pilot. The valve 18 is of the ordinary plug type, and its stem 18 carries a ratchet 22 (best shown in Fig. 3), with which a pawl 23 coacts. This pawl is carried on an arm 24 which is mounted on the stem 18 One end of the arm is furnished with a weight 24* and other end of the arm has a chain or cord 25 attached thereto. This weight causes the arm to hang normally in vertical position, and the arm is furnished with a lug 2 1; which Specification of Letters Patent.

Patented May 4, 1915.

Serial No. 747,015.

is adapted to engage a lug 26 (see dotted lines in Fig. 2) on the valve fitting 15, by means of which lugs 24 and '26 the movement of the arm is limited. By pulling down on the cord or chain 25 the arm is given a quarter turn, and this, through the pawl 23 and ratchet 22 gives a quarter turn to the valve 18. It will therefore be seen that by rapidly pulling and releasing the cord 25 the valve 18 is given a step-by-step rotating movement which alternately opens and closes the valve. The lamp may hang high and the corc 25 project below the lamp, so that the gas may be conveniently turned on or oil. From the valve fitting 15 a tube 27 extends down to the check casing 28 (see Figs. 4c and5). This casing has a small opening 29in its lower end which discharges into a tube 30 extending below the casing 28. Said opening 29 is controlled by a conical valve pipe 31 on the valve body 32.

The valve body 32 has its outer sides scored or grooved to permit the gas to pass by the valve, but at the same time to guide the valve body in its vertical movement in the casing. In the upper end of the valve body is a pocket 33 open at the top and designed to constitute a trap for impurities and solid matter falling from the tube 27. It will therefore be seen that this arrangement allows a free flow of gas past the sides of the valve 32, but that solid impurities falling through the tube 27 will lodge in the trap 33 and will not pass into the orifice 29 to clog or obstruct the same.

The vertical position of the valve body controls the position of the valve point 31 and thereby theamount of gas passing the orifice 29 is controlled. This vertical position of the valve body is regulated by an eccentric pin 34 on a disk 35 which is car ried fast on a stem 36. The pin 34: plays in a horizontal slot 37 in the valve body, and the disk 35 lies in the casing 28 alongside of the valve body. Screwed into the casing is a tube 38 which surrounds the stem 36 and projects into the metal casing 10. On the outer end of the tube 38 is a stuliing box 39 which projects through an orifice in said casing 10 so that it may be reached by a pair of nippers or other tool, thus allowing for the easy replacement of the packing, so that a thoroughly gas-tight joint is maintained. The stem 36 projects through the striding-box 39 and is furnished with a kerf or is otherwise adapted to receive a screw driver orother tool for turning the stem for regulating the position of the valve 31. lt will be seen therefore that the position of gas with air admitted to the tube 30 through air tubes 40. There are preferably three of these air tubes 40 which extend horizontally through openings in the casing and admit I the air from the atmosphere outside of the casings. The ends of the tubes are open and are furnished'with stoppers in the form of tubes 41 with knurled heads 42. The tubes 41 fit friction-tight in the tubes and are furnished with slots 43 for the admission of air. The knurled'heads 42 allow the easy manipulation of the stoppers, moving them in or out, and according to the position of the stoppers more or less air is admitted through the slots 43. It will be seen, therefore, that I provide for a very nice regulation of the relative quantity of air and gas,

forming the Bunsen mixture, and at the same time I draw the air from the relatively pure outer atmosphere, making the-Bunsen mixture as pure as possible,which condition is highly advantageous in the operation of the Bunsen burner; The tube 30 extends down to a branch fitting '44 carrying the nipples 45 which support the mantles 12. This multiple fitting 40 is furnished with four branches to carryv four mantles, butrit may be arranged to carryonly one mantle, as explained. For'regulating the volume of the Bunsen mixture admitted to this fitting.

44 I provide a conical valve 46 which is carried on a stem 47 screwed in the bottom of the fitting. By turning this stem 47 the valve 46 may be moved up or down, toward or from the lower end of the tube 30 against which the conical valve 46 is adapted to seat. In this manner the discharge orifice from the tube 30 may be regulated, which will regulate the volume of the Bunsen mixture admitted in the burners.

From the foregoing description it will be observed that I have provided for the utmost nicety of regulation first, of the gas as it flows from the supply, second, of the relative proportions of the air and gas going into association to form the Bunsen mixture, and

third, of the volume of the Bunsen mixture,

allowed to pass to the burner nipples. Con-- sidering the great variety of conditions under which an incandescent gas lamp must operate with respect to the pressure of the gas, the quality of the gas and even the surrounding atmospheric conditions, it will, be seen that this nicety of regulation, is of great importance and is-a factor upon which the success of the lamp largely depends.

The glass globe 11 is held in an annulus47 by means of the usual screws, and the'annulus has fastened thereto anv arm 48 which carries a pin 49, and thispin is adapted to fit in the lower end of a slot 50 formed in an arm 51 fastened to the lower end of the casing 10. This constitutes a hinge for mounting the annulus 47 on the casing, and at the same time this hinge may be readily disconnected by moving the arm 48 and pin 49 upward to disengage the pin from the slot 50. To hold the annulus in raised or operative position I provide a button 52 which is adapted to seat in the enlarged upper end of the slot 53, formed in a ing 54' projecting from the lower end of the casing. This button 52 is carried on a pin 55 which is fastened to the annulus 47, and a spring 56 18 arranged around the outerend of the pin I serving yieldingly to press the button 52 inward. To disconnect this latch it is only necessary to draw outward the button 52 and.

then the inner end of the button will clear the upper endof the slot 58 and allow the annulus to swing down around thepin 49. The engagement of the base of the latch is effected bya reversal of this operation.

Having thus described my invention, what I claim is: V

A gas lamp having a mixture. supply tube provided with a discharge end having a valve seat, a fitting at the discharge end to carry the gas to the burners, and a valve disposed centrally of the fitting and cooperating with the valve seat, the valve being coni cal to spread the gas evenly to said burners.

In witness whereof I have signed my 7 name to this specification in the presence of two subscribing witnesses this 30th day of December, 1912.

JOSEPH LEDERER.

Witnesses: v

SUSAN DUBIN, CATHERINE PECQUEUR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of mafia;

Washington, .D. G. a

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