US1148198A - Lamp. - Google Patents

Description

c. H. SMITH.

LAMP.

APPLICATION FIL'ED MAY 8, I91].

Patented July 27, 1915.

TED @TA s PATENT emce- CHARLES HAZOR SMITH, OF CHICAGO, ILLINOIS,. ASSIGNOR TO THE MANTLE LAMP COMPANY OF AMERICA, OF CHICAGO, ILLINOIS, A CORI'ORA'IION OF ILLINOIS.

LAMP.

Application filed May 8, 1911.

To all whom it may concern:

SMITH, a citizen ofthe United States, re-

siding at Chicago, in the, county of Cook and State of Illinois, have invented certain new and useful Improvements in Lamps; and I do hereby declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in vapor gas lamps. p

The objects are to provide means for regulating the volume ofair which is drawn into the mixing chamber, also to provide an adjustable shade holder that will permit the shade to be set higher or lower according to the requirements of the user.

It is a well known fact that vapor gas from kerosene (coal oil) is composed of carbon and hydrogen gases, which must be mixed with oxygen in certain proportions in order to produce and sustain the nonluminous flame that is required to heat a mantle to a full glow. In normal air, containing the usual amount of oxygen, the volume of air is about 92 parts to 8 parts gas. This volume of air is sufficient to supply the required amount of oxygen to produce perfect combustion and sustain the non-luminous flame under normal conditions, but under conditions,'like a crowded and insufficiently ventilated room, the air may be so vitiated that it lacks the normal amount of oxygen, hence, a larger volume of air must be introduced and mixed with the vapor gas in order to maintain the proper proportion of oxygen or the flame will change to the yellow flame which does not require so much oxygen and from which the unconsumed part of the carbon is thrown off in smoke.

It is an easily recognized fact that wher 92% of air and 8% of vapor gas are to be mixed in a small mixing chamber, the air must move about twelve times as fast as the vapor gas rises. means of the draft of the chimney in conjunction with the size and arrangement of the air openings. Therefore, any increase of power or draft will necessarily increase the speed of the air through the intake openings, and through the mixing chamber,

thereby introducing a larger volume of air Specification of Letters Patent.

This is accomplished by Serial N0. 625,777.

without increasing the regular flow of vapor gas.

It is safe to assumev that normal air at the ordinary altitude contains the maximum amount of oxygen and'that only such conditions as tend to deplete the air' of its oxygen need be taken into consideration in connectionwith the auxiliary chimney. Theseconditions are so variable on accountof altitudes and ventilation that an adjustabledevice for regulating the volume of air is a prime necessity.

My invention consists of an adjustable auxiliary chimney, which is in alinement with or telescopically connected to the chimney, and thereby adjusts or regulates the draft to any desired power, and of an extensible shade holder which permits the shade to be set at any desired height. The auxiliary chimney and the shade holder are Patented July 2?, 1915.,

connected together and both are adjustable shade holderis also adjustable with respect to said auxiliary chimney.

In, carrying out my invention, I provide an adjustable auxiliary chimney and an adjustable shade holder, the latter being adjustably attached to the lower end of the former by any suitable means, so that as the auxiliary chimney is raised or lowered, the shade holder is moved correspondingly. The shade holder is also adjustable on the auxiliary chimney.

The auxiliary chimney is connected to an arm or bracket which is adjustably attached to a suitable support. By this means, I am enabled to set the auxiliary chimney at any desired height, also to increase or diminish the radius of the circle to which the direct rays of the light extend outwardly from the lower edge of the adjustable shade, thereby adapting the lamp to better serveits purpose under varying conditions of its use. This adaptability of my lamp renders it an ideal one for use in oiiices, libraries, lodge rooms and pulpits, as well as at home under the varying conditions of its use there The provision for adjusting the draft by adapting the auxiliary chimney to extend down more or less as may be desired over the usual transparent, or glass, chimney, renders the lamp especially desirable for use in public places when it is required to burn for many hours with little or no attention. The

adjustable draft is also useful when removing the lamp from a materially lower to a materially higher altitude, as well as under materially different conditions of the atmosphere at the same altitude. In order to keep the auxiliary chimney from becoming overheated, I provide it with an inner tube of somewhat reduced diameter in order to secure an air space between the two. This inner tube is preferably of greater length than the auxiliary chimney within which it is placed. It will be understood that the upper end of the ordinary chimney, which rests on the burner, extends up to, or more or less into, the auxiliary chimney, whereby the draft may be regulated by extending the auxiliary chimney more or less over the burner chimney. The adjustability of the shade holder upon the auxiliary chimney permits the latter to be moved up or down for regulating the draft while maintaining view of the shade holder alone, and Fig. 5

is a horizontal section on the line 0-0 of Fig. 2.

Referring to the drawings, 1 is a base having a standard, 2, upon which is mounted one or more burners, 3, as desired, by any suitable means. The standard is inclosed by a sleeve 2 which fits closely around it and preferably extends throughout its length.

1 is an oil reservoir.

5 is an auxiliary chimney supported by a suitable bracket 6, which is adjustable upon the sleevesQ, said bracket being mounted on the sleeve by spaced supports.

To prevent the shade holder and adjustable, or auxiliary chimney from accidentally falling or dropping and thereby breaking or injuring any of the parts of the lamp, I provide means, as for example a collar 6 which is adjustably secured to the sleeve, to serve as 'a stop for the sliding bracket, 6, to which the auxiliary chimney is attached in any suitable manner.

8 is a shade which is adjustably secured to the lower end of the auxiliary chimney in a manner to be presently explained.

In adjusting the auxiliary chimney and shade holder, the bracket is placed at the desired elevation on the sleeve and is secured thereto, as by a set screw 9. The burner, as illustrated, is also adjustable on the sleeve and is held at its various positions by a set screw 9 A collar 8 fast on the sleeve, limits the downward movement of said burner. The securing of the burner and full i auxiliary chimney, at their various adjustments, upon the sleeve 2 which is free to ard in either direction by engaging only one.

As already explained, the auxiliary chimney comprises two concentric tubular members, designated 5 and 5 The outer tubular member 5 is provided with a series of perforations 10 to permit air to pass into and up between it and the inner tubular member 55 for keeping the outer section cool. i

The shade holder 11, which supports the shade 8, is formed with an upwardly extending flange 12 fitting between the inner and outer sections of the auxiliary chimney. A plurality of inclined slots 13 are formed preferably equidistant apart in said flange. Screws or pins 14, similar in number and location to said slots, and all in the same horizontal plane, are pressed through the sections of the auxiliary chimney and the respective slots. Each of said slots is provided with a number of notches 15 in its upper lateral edge into which the screws or pins 14 may be lodged for supporting the slide at different locations upon the auxiliary chimney. To change the position of the shade holder upon said auxiliary chimney, the former is first raised slightly in a vertical direction, to disengage the notches 15 from the pins or screws 1 1-, and then turn either to the right or left for raising or lowering the shade, until said'screws engage the notches which will support the shade at the desired level. Said shade holder has a series of perforations 11 therein for egress of heated air from the interior of the shade. I have shown my auxiliary chimney equipped with a smoke arresting canopy 16 supported on legs 17 reaching down into the upper end of said auxiliary chimney and having offsets 18 engaging the top edge thereof. It

is preferable to use such a canopy upon the lamp but it does not constitute any part of on, a chimney carried by said burner, an auxiliary chimney adapted to telescope said burner chimney, and means for supporting said auxiliary chimney on the standard at varying distances relativeto the burner to increase or diminish the volume of air drawn into the burner.

2. In an incandescent lamp, a standard, a sleeve mounted to turn freely thereon, a burner adjustably mounted on said sleeve, a main chimney, and an auxiliary chimney mounted on said sleeve and adjustable relative to the main chimney.

3. In a lamp, a burner having a main chimney, an auxiliary chimney adapted to telescope said main chimney, and means to support said auxiliary chimney relative to said main chimney.

4. In a lamp, the combination, with a base and a standard carried thereby, of a sleeve supported on the base to turn freely around said standard, a burner, a main chimney, an auxiliary chimney, and a shade, said auxiliary chimney and shade being independently mounted on the sleeve and adjustable with reference to the main chimney and burner.

5. The combination with a burner and a chimney of a lamp, of an auxiliary chimney, a shade holder secured thereto, a shade supported by said shade holder and ventilating means within said shade holder for the egress of heated air from the shade and chimney.

6. The combination with a burner and a chimney of a lamp, of an auxiliary chimney in two parts, the inner part substantially concentric with the outer part, means for retaining said parts in such relation to each other, and a shade holder adjustably mounted between said concentric members of the auxiliary chimney. V g

7. The combination with a burner, a chimney and means for supporting said burner, of an auxiliary chimney composed of two tubular sections, the inner section extending below the outer section, and a shade holder attached to said outer section independent of the burner supporting means.

8. The combination with a burner and a chimney, of an auxiliary chimney comprising two separated concentric sections, the outer section having a series of perforations for the admission of cool air to, and to pass through, the space between said sections, and a shade holder secured to the lower end of said auxiliary chimney and having a series of perforations therein for the egress of heated air.

9. The combination, with a burner and a chimney of a lamp, of an auxiliary chimney having a shade holder adjustably mounted thereon, and means whereby said shade holder may be retained at various positions relative to the burner.

10. The combination, with a burner and a chimney of a lamp, of an auxiliary chimney,

taining the shade holder at various positions upon the auxiliary chimney.

11. The combination, with a burner and a chimney of alamp, of an adjustable auxiliarv chimney, a shade holder having a flange.

overlapping the lower end of the auxiliary chimney, said flange containing a plurality of oblique slots having notches in their edges,

and a plurality of pins on said auxiliary chimney engaging said slots and adapted to fit into said notches for adjusting and retaining the shade holder at difierent positions on the auxiliary chimney.

12. The combination, with a burner and a chimney of a lamp, of an adjustable auxiliary chimney composed of two tubes, one arranged within the other, a shade holder having a flange extending between said tubes, said flange containing a plurality of oblique slots having notches in their edges, and a plurality of pins passed through said tubes and slots and adapted to fit into said notches for adjusting and retaining the shade holder at different positions on the auxiliary chimney.

13. A lamp having a burner, a main chimney carried thereby, an auxiliarychimney telescopically mounted with relation to the main. chimney, a shade, and means to support the auxiliary chimney and shade at a predetermined position with relation to the burner.

14. In a lamp, the combination with a base, and a standard, of a sleeve of substantially the same length as the standard and adapted to turn freely around said standard, a burner adjustably mounted on said sleeve, a main chimney carried by said burner, and an auxiliary chimney having means whereby said auxiliary chimney is adjustably mounted on said sleeve in telescopic relation to the main chimney.

15. In a lamp, the combination With a standard having stop members at each end thereof, of a sleeve mounted to turn freely on said standard and extending substantially into engagement with the stop members carried thereby, a burner adjustably secured to said sleeve, a main chimney and a telescopic auxiliary chimney also mounted on said sleeve and adjustable relative to said burner, said auxiliary chimney being provided with a bracket having a plurality of spaced supports to engage the sleeve. 7

16. In an incandescent lamp having a burner of the blue flame wick type, a chimney carried by the burner, an auxiliary chimney adapted to telescope said burner chimney, and means to support said auxiliary chimney at varying distances relative to the burner chimney to increase or diminish the volume of air drawn into the burner.

17. In an incandescent mantle lamp of the blue flame type, a burner, a main chimney, and an auxiliary extension chimney supportcd'to telescope the upper section of the main chimney thereby operating to increase the draft of the main chimney.

18. In an incandescent mantle lamp of the blue flame type, a burner having a main chimney, an auxiliary chimney adapted to telescope the main. chimney, and means to so support the auxiliary chimney with relation to the mainchimney as to increase the draft of the burner through the main chimney. I

In testimony whereof, I aflix my signa ture, in presence of two Witnesses.

CHARLES HAZOR SMITH, Witnesses:

VIoToR S. JoHNsoN, W. M. DANIELS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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