US939137A - Incandescent-lamp burner. - Google Patents

Description

A. A. J AHNKE.

INGANDESGBNT LAMP BURNER,

APPLICATION FILED KAY 2B. 1907.

Patented Nov. 2, 1909.

INVENTOR,

WITNESSES A TTORNE Y.

UNITED STATES PATENT oFFIoE.

ALBERT A. JAHNKE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO INCANDESCENT OIL LAMP COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF ARIZONA TERRITORY.

INGANDESCENT-LAMP BURNER.

Specification of Letters Patent.

Patented Nov. 2, 1909.

To all whom it may concern:

Be it known that I, ALBERT A- JAHNKE, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Incandescent-Lamp Burners, of which the following is a specification.

The object of the present invention is to provide an improved burner for incandescent oil lamps, by means of which the air can be supplied more evenly and to better advantage to the combustible gas generated from the oil.

In the accompanying drawing Figure 1 is a vertical section of a portionof a lamp equipped with my improved burner; Fig. 2 is a section on the line 22 of Fig. 1; Fig. 3is a top plan view of the generator; Fig. 4 is a horizontal section thereof; Fig. 5 is a horizontal section of the wick raiser; Fig. 6 is a section on the line 66 of Fig. 1; Fig. 7 is a broken side view of the inner wall of the air chamber; Fig. 8 is a detail broken side view of the mantle post.

Referring to the drawing, 1 indicates the body of the lamp, a portion only being here shown. Into the neck 2 of said body is screwed the outer wall 3 of the wick chamber, said wall being formed with an inwardly extending shoulder 4. 5 indicates the inner wall of the wick chamber, and said outer and inner walls are formed with registering apertures forming an air inlet 6 lead ing to the interior of the inner wall of the wick chamber which thus forms the wall of the central draft tube. The edges of the apertures of the outer and inner tubes 3, 5, are connected, as shown at 8, so as to entirely inclose the wick within the wick chamber and prevent access thereto from the outer air. The wick used is a flat wick bent in the form of a cylinder, but with its vertical edges separated from each other, said edges passing on each side of the air inlet 6. Said edges pass into circular recesses 9 formed in the bottom plate 10 of the wick raiser, said plate being connected to a rack 11 which is engaged by a pinion 12 on a stem 13 turned by means of a handle 14. Connected to the inner edges of the recesses 9 is a cylindrical plate 15 which passes up with the wick through a guideway formed in a horizontal partition 16, the latter partition extending across the inner wall of the wick chamber beneath said air inlet 6. From the center of said partition rises a tube 17 in which reciprocates the rack 11 of the wick raiser. Upon this tube is placed the tube 18 of the generator, which carries the upper and lower spreaders 19, 20, the upper spreader having the apertures 21 and the lower spreader having the apertures 22, somewhat larger than the apertures 21. The function of these spreaders is to deflect the air admitted to the inlet 6 and cause it to fully commingle with the combustible vapor rising from the wick. The apertures 21, 22 in said spreaders form an important service in breaking up the current of air and preventing eddies, thus supplying the air uniformly to said vapor.

The air chamber 24 is inclosed by a single 7 piece of sheet metal shaped to form an 1nner wall 25, having a shoulder 26 resting upon the shoulder 4, and also an outer wall 27. The inner wall has at the top the out wardly extending flange 28 and the outer wall has the inwardly extending flange 29 above the flange of the inner wall. Said inner wall is also formed near said flange with the apertures 30. These perforations 30 form an important function in admitting air from the air chamber to the combustible vapor rising from the wick, and dividing and evenly distributing the air so admitted. The

outer wall is formed with circumferential beads 32, 33, and also formed with beads registering with the beads 32, 33, is the combined chimney holder and air screen 34, the upper portion being substantially cylindrical, to retain therein the chimney, shown at 35, and having inwardly extending feet 36, upon which said chimney rests, and the lower portion curving inwardly and being formed with numerous perforations 37 to admit air to the interior. The air so admitted passes up through apertures 38 formed in the bottom of the air chamber and thus passes into said chamber. Between the air screen and the neck ofthe lamp is the perforated base. ring 39 which conceals the bearing 40 of the stem of the wick raiser.

Secured within the chimney holder is a pocket 41, in which is received the bottom of the mantle post 42, said post having its lower end bent back on itself to form a spring arm 43, which by sprinv pressure holds the post securely in the pocket. Suspended from said post is theinantle 4:42. In conformance with the conical shape ofthe mantle the outer Wall of the air chamber is also made of a conical formfittimg; snugly within the lower end of the mantle.

In order to prevent turning the wick too high, there is secured to the stem a collar 47 having a finger 48 which moves between stops 49 formed in a disk 50 secured to the bearing for said stem.

In -order to prevent the lamp smoking, when being :carried by hand, I provide around the apertures 37 an air shutter 51, which can be turned to vary the extent of opening for the admission of air, so that,

when necessary, the air can be shut off to prevent imperfect combustion.

The iOPGI'fltlOll of the device can now be readily understood. The air is supplied partly through theair inlet 6 and up through the central draft chamber, being deflected by the sp1'eaders-19, 20, and partly through the apertures 38 into the air chamber, whence itis supplied past the flange '28and through the apertures 30. I have found I that this arrangement furnishes a uniform and even supply of air to the hydro-carbon vapor 'arisingfrom the wick. The flames/of combustion are uniformly 'distributed'within the interior of the mantle and pass uniformly through said mantle, thus producing uniform incandescence thereof.

I claim In a lamp, the combination, with the outer wall of a wick chamber, of an inner wall of an air chamber, arranged ad acent to said outer wall to form an airconduit, said inner wall extending into close proximity with the top of the outer wall of the wick chamber, and being formedclose tosaid top with small perforations to admit air into the space between said walls, and an outer wallofthe air chamber having an inwardly extending flange to direct the air inward, substantially as described.

In testimony whereof I have hereunto :set myhand .in the presenceof two subscribing ALBERT A. JAHNKE.

witnesses.

Images