US1190159A - Arc-lamp. - Google Patents

Description

C. A.v B. HALVUHSUN, JR.

ARC LAMP.

APPLICATION FILED SEPT. 16. 1914.

1,1 90,159. i Patented July 4, 1916.

Witnesses: Inventor:

Cbromwel I aqHalvorsonJl;

IUruTEiiJ STATES PATENT OFFICE.

CBOEWELL A. B. HALVOBSON, JB., F LYNN, MASSACHUSETTS, ASSIGNOR '.l'O GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ARC-LAMP.

. To all fuiho'm, 'it may concern Be it known that I, CROMWELL A. B. HAL- vonsoN, Jr., a citizen of the United States, residing at Lynn, county of Essex, State of Massachusetts, 'have invented certain new and useful Improvements in Arc-Lamps, of which the following is a specification.

My invention has reference to arc lamps mounted on posts or other supports, and is particularly applicable'to'inclosed flame arc amps 'although not limited to arc lamps of this character.

Inclosed ame are lamps have hitherto been vbuilt comprising v a substantially air tight arc inclosure formed of an inclosing globe open at the top and seated against and communicating with a superimposed depositing chamber within which the gases-evolved from the are circulate and where the solidi- 'able products of combustion are deposited.v

. Lamps of this character' are usually provided with an outer globe to keep the inner globe hot and to improve the distribution of light.

Fig. 4 is When such lamps are suspended in the usual way, it is only necessary to either lower or globes in order to trim the lamp and 'clean the globe. When, however, the lamp is mounted upon a post or otherl support, special provision must be made for obtaining access to the inner globe for the purposeof cleaning the same and of trimming the lamp, and the provision of means for this purpose is one oflthe objects of my invention.

A further object of my invention is the provision of a novel form of outer globe and support therefor.

Other objects'of my invention will be apparent from the description and will be particularly ointed out in the claims.

For a uller understanding of myinvention reference maybe had to the accompanying drawin in which- Figure 1 1s aV sideview of al lamp embodying my invention with certain portionsin section and with some portions broken away; Fig. 2 is a sectional plan view partially broken away, showing the doorv formed in the outer globe in open position; Fig. 3 is a sectional elevation of a .part of the lamp; a fragmentary plan view showing a portion yof Athe upper ring of the globe cut away to form a seat for the door in which is mounted a anel ofthe outer globe; and Fig. 5 is a etail sectional view on the line 5-5 Fig. 1, showing-a lockingl device for Specification of Letters Patent.

Patented July 4, 1916.

Application led September 16, 1914. Serial No. 861,961.

the door in the outer globe at the bottom thereof.

Referring now to the drawings in which likereference characters indicate the -same parts in the different views, 10 is a ost or other support u on which is mounte a supporting frame or the outer globe and for the lamp itself. This frame comprises'a lower annular ring 11 mounted upon the support 10 and air upper ring 12 which is jolned with the ring 11 by suitably formed ribs 13, 14, y 15 and 16, each lin a vertleal plane with the axis ofthe rings 11. and 12. The ribs '13 and 16 are longitudinally divided intosectons 13 and 13b, and 16 and 16" respectively. 13b and 1 6a are fixed members of the globe frame while the rib sections 13a and 16h form with the ring sections 11a and 12 a door frame 17 which is hinged at 18`to section -16a of the rib 16. The bottom ring 11 is provided with a slot 20 (see Fi 5) beneath the door 17` for the reception oa lug or pin 21 carried by the ring section 11a for the purpose of locking the door in its closed position. yThe section 11el is provided with an outstanding lug 22 in which is secured a ring 23 by which the door may be ,lifted and opened.

The outer globe A is com osed of a number of panels 24,25, 26 and 2?, three of which, 24, 25 and 26, are seated against the anges l 28 formed at the inner edges of the ribs 13,

14, 15 and 16, as shown in Fig. 2, and against ledges 29 formed ,on the upper ring 12, as shown in Fig. 3and on the lower ring, as shown in Figs. 1 and 5, the panel 27 being mounted in the door frame 17. The various panels are preferably vheldin position by flexible means which I have here shown as (See Fig. 2.) The rib sections coil springs 30 which are secured at their ends to adjacent ribs, the ends of the springs which hold the vlpanel of the door in position being secured to the' rib sections of the door frame. The springs engage the panels at the top and bottom respectively, the top and ioo l which solidifiable products of combustion are deposited. This depositing chamber', which for convenience l have referred to as a part of the arc lamp frame is represented by the numeral 31. rlhis depositing chamber is of a diameter rather large in proportion to its height and is preferably formed to extend laterally well' beyond the top of the supporting frame. The under side of the depositing vchamber is preferably provided with a downwardly extending fiange 31`a against which is seated, substantially air tight, the inner globe 32. The inner globe and depositing chamber thus form a sub-I stantially air tight inclosure. rllhe bottom plate 33 of the lamp frame, which "l have here shown. in the form of a frustum of a cone, is received in an opening 34 in the top wall of the depositing chamber. rl`he upper electrode 35 passesfthrough the bottom plate 33. in the usuall way; while the lower electrode 36 is carried by a rod 37. A tube 40 for the accommodation of the 'conductors leading from the support 10 to the arc lamp mechanism passes through the upper and lower walls of the Ydepositing chamber.

llt will be understood, of course, that any desired feeding mechanism may be used for the lamp, although with a structure such as l have here shown, it will usually be. preferable to employ a focusing mechanism, the mechanism for the lamp being carried by` the arc lamp frame above the depositing chamber and inclosed within a casing which will preferably be formed to harmonize with the appearance of the outer globe.

In order vto readily bring the inner vglobe into the opening formed by the door in the outer globe when the door is open, the depositing chamber is hinged to the upper ring' 12 at 38 at a point opposite the door in the globe. The lower side of the depositing chamber is providedwith a flange 39 which engages, on its inner face, the upper ring 12 so that when the depositing chamber is in position it will lockfthe ring section 12, including the section 12 and thereby the door in position. y

The inner globe and the door in the outer globe are of such relative sizes that the inner globe may readily be removed through the opening formed by the door when the saine is open. Now, in order to trim the lamp it is only necessary to irst slightly tilt the lamp about the hinge 38, which unlocks the door, then open the door and then further tilt the arc lamp frame about the hinge 38 which brings the inner globe into the opening in the outer globe. rl`he inner globe then may readily be removed.

In accordance with the provisions of the patent statutes, l have described the principle of operation of my invention, together with a removable panel, .an arc lamp frame mounted upon said supporting frame, an inner globe secured to said frame and depending within the outer globe, the arc lamp frame being tiltably mounted on the supporting frame so as to bring the inner globe opposite the removable panel when the arc lamp frame is tilted.

2. In an arc lamp, asupporting frame comprising a number of substantially vertical ribs, an outer globe divided into a num` ber of panels secured .between said ribs,

one-of the panels being pivotally mounted whereby the saine may be opened, an arc lamp frame mounted upon said supporting frame, and an inner globe secured to said arc lamp frame and depending within the outer globe, the arc lamp frame being pivoted opposite the pivoted panel whereby the inner globe is brought into the opening formed by said panel when the arc lamp is tilted.

3. In an arc lampa supporting frame, an outer globe secured to said frame and provided with a removable panel, an are lamp frame provided with a depositing chamber for fumes evolved from the .arc mounted upon said supporting frame, an inner globe open at the top secured beneath the depositing chamber and communicating therewith, said depositing'v chamber being pivoted to said supporting frame opposite the removableA panel, whereby the inner globe is brought into the opening formed by the removable panel when the arc lamp frame is tilted.

4. In an arc lamp, a supporting frame comprising upper and lower rings joined by a number of ribs, an outer globe divided into a number of panels mounted between said ribs, one of the panels being mounted on a hinged frame, an arc lamp frame mounted upon the vtop ring oit said frame and hinged thereto opposite the removable panel, an inner globe secured to the arc lamp frame and depending within the outer globe, whereby when the arclamp is tilted the inner globe is brought into the opening formed by the removable panel.

.5. In an arc lamp, a base, a supporting frame mounted thereon, an outer globe secured thereto, an arc lamp frame comprising a flat depositing chamber seated upon said supporting frame, an inner globe secured against said depositing chamber, and

f a tube extending through the upper and my hand this 'eleventh dey of September lower Walls of the depositing chamber and 1914.

communicating with the space between the inner and outer globes for accommodating CROMWELL A' B' HIYORSON JR'.

the conductors extending from the base to Witnesses:

the arc lamp. JOHN A.. MOMANUS, J r.,

In Witness whereof, I have hereunto set EMILE J. GUAY.

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