US737214A - Lamp. - Google Patents

Description

i PATBNTED AUG. 25, 190s.` R,..M'.DIX0N.

LAMP. APLIOA-T'ION FILED FEB. 7. 1901.

N0 MODEL.

UNITED STATES Patented August 25, 1903.

PATENT OFFICE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 737,214, dated August 25, 1903,

Application filed February 7 To all whom it may concern: Y

Be it known that I, ROBERT MUNN DIXON, of East Orange, in the county of EsseX,'State of New Jersey, have invented certain new and useful Improvements in Lamps, of which the followingis a complete speciiication,ref erenoe being had to the accompanying drawing.

The object of my invention is to produce improvements in lamps for burning gas, and especially for burning acetylene gas or like gases.

In the drawing accompanying this specification the lamp illustrated being particularly designed for railway-car lighting 'is on that account provided with,V means for inclosing and shielding the ,iame or flames of the burner from the disturbing edects of drafts or air-currents as well as with means for distributing the light onall sides of the lamp.

It is essential to the 'practical operation of a lamp for burning acetylene gas that the gas should be separated or protected as much as possible from the heat of combustion, so as to be kept cool until after it passes the burner-tips. The lamp shown in the drawing illustrates one and that a preferred form of embodiment of my invention for accomplishing the several objects referred to-na'mely, the burning of acetylene gas in a lamp provided with means for protecting the iiame of the burner from injurious drafts and adapted to distribute the light from the flame equally below the lamp.

In the accompanying drawing I illustrate, partially in elevation and partially in central vertical longitudinal section, a preferred form of lamp embodying my invention.

Referring to the numerals on the drawing,

.1 indicates the frame of my lamp, which is of skeleton form, being provided with legs 2, by which it is secured to a ring 3, adapted to be supported by suitable means-for' example, the ordinary bracket-arms (not shown)- but for the reception of which threaded recesses 4 and 5in thering are illustrated. The frame 1 carries a post 6, which supports the head portion of the lamp, consisting, for example, of a cap 7 and transparent dome 8. The details of the cap portion do not require specification, being of familiar construction in the art, and it is only referred to in order ,1901. serai No. '46,392'. (No model.)

-to afford general description of the lamp complete. The post 6 is designed to support the dome 8, so that its lower edge 10 will be in pro'ximityto but separated from the top of the ring 3 'in order to provide an air-inlet space between the edge 10 and the ring entirely around the lamp. The ring 3 is shown as provided with lugs 1-1 for holding the dome' in xed relations to the ring. A

lThe frame 1 supports or assists in supporting a burner, illustr'atedas a cluster of burners 14. The frame and burners are shown as conneoted,\as by a tube 15, screwing at one end upon'v the end of a nipple 16, projecting from the bottom of the frame 1, and at the other end to arod 17, whose lower end is threaded tothe burner-stem 18. A cup reflector 19 is illustrated as carried between the tube and the rod 17.

To the bottom ofthe-ring 3 is secured a partition 20, having a reflective face and provided with an internalrannular wall 21. The

vpartition -20 is designed to support a chimney 22, which is preferably made of transparent material-for example, mica. The 'chimney 22 delivers the products of combustion from the burners 14 to a flue or cluster of iiues 24, supported, as by the frame 1, and communicating through said frame with the interior of the chimney 22. The means for the discharge of the products of combustion istherefore continuous and unbroken between the bowl and the place of discharge.

` It may herebe observed that of the rays of `light proceeding in all directions from each flame supported by the burner-tips those which strike the reliecting-surface of the partition 20 are deflected downward, while those which strike the surface of the cup reflector are .reliected at oblique angles upwardly through the dome 8. shadows above the lamp are dispersed, and for that reason largely the form of embodiment of my invention illustrated is presented as the preferred form. Y

The ring 3 supports, as uponf an inturned annular ledge 26, a transparent or glass bowl 27. The interior of this bowl, which contains the burner, is, as will appear, protected against all injurious drafts and is supplied with air solely through a ring of apertures 28 around the partition 20 and the aperture By this means darkV IOO through which the pipe 30 passes, which derive the supply of air which they deliver mainly from the space between the lower edge l0 of the dome S and the ring A The lamp, as above specified, with the exception of the burners and the means by which they are supported and air supplied by the frame l, is of well-known construction and is here presented only as a means of explaining the principle of my invention as applied to and embodied in a complete lamp.

30 indicates the gas-supply pipe, which, being passed through a loosely-titting aperture provided for it in the partition 20, communicates at one end with the recess 5 in the ring 3 and at the other with the internal passages of the burners la, the recess 5 beingin communication in the manner common to lamps of this class with a source of gas-supply.

The burner-tips 25 illustrated may be of any preferred form designed for the burning of acetylene gas,those illustrated being shown only by Way of example and being of a type well known in the art.

The pipe 30 is located in the current of cold air which descends into the bowl 27 through the ring of apertures 28 and the aperture through which the pipe passes in the partition 2O and is representative in that relation of means for keeping the gas supplied to the burners cool until it issues from the burnertips, which, as specified, is the main object to be attained by my invention.

In operation, gas being supplied to the burners, fiames from the burner-tips are supported by the volume of air indrawn through the apertures 2S by the drat't of the lamp, and that incoming draft from the outside atmosphere is utilized for maintaining the gas-supply at a suliiciently low temperature. By reason of the continuous means of discharge of the products of combustion and the air of the air-inlet apertures a strong current of air is while the lamp is lighted kept flowing inwardly against the interior of the bowl 27. Itis this current of air, promoted and directed as stated, which is utilized for accomplishing the object of my invention.

What I claim is- 1. In a lamp for burning acetylene gas or like gases, the combination with an inclosed burner and means of gas-supply thereto, of means for keeping the gas supplied to the burner comparatively cool until it reaches approximately the point of ignition.

2. In a lamp for burning acetylene gas or like gases, the combination with an inclosed burner and means of gas-supply thereto, of means for maintaining the gas-supply at a sufficiently low temperature by the air indrawn by the draft of the lamp.

3. In a lamp for burning acetylene gas or like gases, the combination with an inclosed burner and means of gassupply thereto Within the burner-inclosu re, of means for keeping the gas supplied to the burner comparatively cool until it reaches approximately the point of ignition.

4. The combination with a lamp, comprising a frame, a bowl, a partition, and continu ous means for the discharge of the products of combustion lfrom the bowl through the partition, of means of air-supply to the bowl through the partition, a burner Within the bowl, and a gas-supply pipe communicating with the burner, said pipe being located within the area of the air-supply current.

5. The combination with a lamp comprising a frame, bowl, partition, and continuous means for the discharge of the products of combustion through the partition, of materially-defined air-apertures in the partition adapted to supply air against the inner wall of the bowl, a burner within the bowl, and a gas-supply pipe communicating with the burner and located in proximity to the inner Wall of the bowl.

6. The combination with a lamp comprising a frame, bowl, partition, and continuous means for the discharge of the products of combustion through the partition, of materially-delined air-apertures in the partition adapted to supply air against the inner wall of the bowl, a burnerwithin the bowl, a gassupply pipe communicating with the burner and located in proximity to the inner wall of the bowl, and'meansjn addition to the pipe, connecting the burner with the frame.

7. The combination with a lamp comprising a ring, a bowl, a partition and means for the passage of the products ofV combustion from the bowl through the partition, all supported by said ring, of means of air-supply to the bowl through the partition, and a gassupply pipe located within the area of the airsupply current and secured to the ring.

In testimony of all which I have hereunto subscribed my name.

ROBERT M. DIXON.

Witnesses:

FREDERICK E. KESSINGER, RANDOLPH PARMLY.

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