US2258108A - Lamp - Google Patents

Description

Oct. 7, 1941. p; c; c ss 2,258,108

' LAMP Fil'ed June 3, 1959 2 Sheets-Sheet 1 INVENTOR. PA L 9. CALISSI I ATTORNEY.

Oct. 7, 1 941 P. c. muss. 2,258,108

LAMP

Filed June 3, 1939 2 Sheets-Sheet 2 INVENTOR. PAUL C.CA|. ass\ ATTORNEY.

Patented Oct. 7, 1941 UNITED STATES" PATENT OFFICE Y 2,258,108 1 Y Y Paul 0. Calissi, Philadelphia, laf, Application Juneait, 1939; SeriaLNo. 277,209 5 Claims; c1. 240-81) This; invention relates to electric? lamps and has as its; principal object to providein the standard. of the; lamp an: auxiliary light of such l'ow'w'attage that it maycserve economically: as. a pilot to dimlyvilluminate the; room in the immediate vicinity of the lamp. "Thus, when; the main lightingunit of the lamp is extinguished, the'pilotmay. be utilized to provide subdued illuminafion 'sufiicient to enable: one entering the;

darkened room todistinguish objects and so avoid any danger ofgtripping; over them.

' invention: is an improvement over my prior Patent No.. 21563617, granted May 2, 1939, and has. as its. principal object the provision of a construction for. enabling ready repl'acementinot only of the pilot as desired but also of the glass orlike enclosure fortherlatter, at the sametime that it provides" for incorporating the pilot. in the lamp, standardwithout rendering the pilot so'fobtrusive as to reduce the desired pleasing appearance ofithe lamp structure considered. as;

a whole, all of Whichwill be apparent. more. fully hereinafter.

v-In addition, .it' is; an object of the present in-' vention. to providean improved typeof open or harpesharped: frame within which the; pilot may. be disposed and which effectively connects together'the parts constituting the enclosure for the 'pilot, the said frame being designed to accommodate the wiring inthe sidearms thereof insuchmanner? as to effect-a neat and safe wiring; assembly. I

#11?" will be: understood; accordingly, that the presentinvention consists substantiallyin the combination, construction, location and relative arrangement of parts, alluas described hereinaftenzas shown in. the accompanying drawings and as; finally pointedouti 'in the appended claims. .v

In the: said accompanying drawings:

Figu-re'l i'san-elevational' view'of a'lamp structure constructed in accordance with and embodying-the principles of the present invention;

Figure 2 is an enlarged vertical section showing the improved pilot lamp assembly embodied in the standard of; the main lamp structure;

Eigure 3 is an elevational view of the main connecting member oi the pilot lamp assembly;

Figure 4 is an enlarged plan view of the said, main connecting member; r

V Eigure 5 is a cross-sectional viewon lines 5-5 oil-.Eigure 3 looking in the directionof the ar Figure 6 ma cross sectional. view outlines 6 -6- the element l3. The opposite side member I5 is is; provided with a vertically extending internallyi thereof with transverse apertures 2 l-2:L

of Figure 3 .looking; in the direction of the arrows; a

1 Figure. 7:.is an; elevational view of a lamp embodying a somewhat modified form of the present invention;

Figure 8 a vertical sectional view of the modified construction of; lamp;

, Figure- 9 is' an elevational: view of a modified form of the connecting member or frame such as is employed in the lamp of Figurefil;

- Figure 10 is a top plan View of theemember shown in Figure 9; and I Figure 1-1 is: a cross-sectional view taken on the line :|-'|:l of Figure 9'.

Referring now more'particula-rly to. the drawings,, it will be observed'that the" pilot lamp assembly, designated generally by the reference numeral I'llis: incorporated at the upper end of the: standard 2H of the pedestal type lamp l2. While: the lamp shown in the drawings is of the so-called floor lamp type, it will be understood that the present invention is: equally applicable to table andbridge: lamps Where the latter are. provided a straight length portion similar to: the standard |-lillustrated.-

The-reference; character l3- designates generally the improved main connecting harp-like frame of. substantially-hollow rectangular shape; this element being formed with oppositely bowedsidevv members Mr and ti integrally connected at their bottom ends by; the internally threaded boss l6, and at theirtop ends by thesolid head H havingawi-ring clearance cut out i-n'the side'- thereof, as at: L8, and'having in addition two up standing spaced: apart lugs l9; I9, each of which thre'adedr hole 18s; for a purposeto be described.

The side member-l4, as clearly appears inthe cross sectional viewsof Figures 5 and 6; is provided. with grooves M"- to reduce the weight of provided With-awiring clearance groove 20 which al-so'servestoreduce' the weight of the element [3, this groove terminating at opposite ends cured in any suitable manner to the inner face of'the side member 14 at the lower end there of-isl the pilot lamp socket bracket 22, the latter supporting the socket 23 and the pilot lamp 24 of low wattage. The sizeof the pilot lamp,

' socket. and bracketis such that they readily fit readily grasped by the fingers for insertion into and removal from its socket.

The upper end of the standard H of the lamp is preferably of hollow or tubular construction to permit wiring therethrough, its upper end be-l' be clamped between the upper end of the stand- 5 ard II and the bottom face of the boss l6, as

clearly appears in Figure 2. Suitably secured to the cup is the switch 26, Figure 2;, 's l 1ownpilot lamp 24 independently of the main lamp 21 which is received within the socket 28 and is provided with the conventional lamp shade and reflector unit 29. The main lamp 21" is controlled by any suitable type of switch operated by means of the switch knob 30. The socket 2B for the main lamp is secured to the upper head l1 of the harp element l3 by means of screws threadedly engaging the holes I9 in .the' lugs l9-|9. The switch knob 30 is of the type which may be bodily removed from its associated switch by the simple expedient 'of unscrewing it'from the latter.

Snugly fitted within and'resting upon the upper edge of the cup-shaped member 25, the upper wall portion of which latter may have a perl'orated design therein, is an enclosure or globe 3| of glass or other suitable light transmissible material, upon the upper edge 32 of which rests the hollow metal enclosure member 33. The globe 2|,' preferably, is frosted or otherwise rendered translucent to light and is provided with a bottom collar which extends within the cup 25 inside the perforated portion thereof. The opaque enclosure member 33 embraces the upper end of the harp element l3 and the main lamp socket 28, being securely held in fixed'position by means of the set screws 34, 34 threadedly engaged in the head H of the harp element, thus securely holding the globe 3| in the assembled position shown in Figure 2. The'inside diameter and shape of the globe 3| and the enclosure '33 is such that, upon the removal of the set screws 34 and the switch knob 30, they may readily be removed from or replaced over the harp element |3, the pilot lamp assembly and the main socket 23, the main lamp 21'having first'beenremoved, The particular design ofthe' globe 3| and the enclosure 33 may be varied as desired, the particular shape or outline here shown not'being neces-l sary so long as'the internal diameters of'these two elements are sufficient to enable" the parts to be assembled or removed as above described.

To remove or replace thepilot'lain'p 24 with respect to its'socket23, it is merely necessary to loosen or remove the set screws 34 and to remove the' switch knob '30, and then to raise the glass globe 3| and the enclosure 33 (the 'main lamp 21 having first been removed) axially'with respect to'th'e harp element l3 to a height sufiicient to permit access tothepilot lamp. In the event that the lamp shade 29 is supported by the enclosure 33v as illustrated,it will be obvious that this will likewise move in fixed relation with the members33. However, in the event that the lamp shade 29Tis of the type which requires removal of the same in order to remove the main lamp 21, then, the lamp shade is not replaced until after the enclosure 33 is again fixed in place by the set screws 34.

With reference to the intermediate connecting harp or frame l3, it will be observed that it is of such construction that it serves effectively not only as a connector for the vertically spaced sections of the lamp standard and as a support for the pilot lamp and the parts immediately associated with the latter, but also that it provides a means for securing neatly and safely in per- ;rnanently fixed position the wiring conductors for the lamp. As clearly appears in Figures 1 to -6, the lamp conductors leading to the main lamp 21 extending upwardly through the lower section wired to and controlling the lighting of the pilo t" j lamp 24, it being understood thatconventional' wiring is employed to permit operation of the of the lamp'standard and into the bore of the 'lowerboss I6 of the member I3 is thence threaded into and through the aperture 2| which communic'ates with the lower end of the wiring clearance groovev 20. The conductors referred to are thus accommodated in this groove and pass outwardly thereof by way of the aperture 2| in communication with the upper extremity of the groove and thence extend upwardly to the main lamp socket byway of the cut-out wiring clearance l8 formed in the side of the upper head H of the connecting'frame l3. The conductors leading to the pilot lamp extend upwardly through the bore of the lower boss IE, it being understood, of course, that these latter conductors are conventionally connected in parallel with the conductors leading to the main lamp, the connection being effected preferably at a point immediately'below the connecting member l3, it being further understood that the switches for controlling the operation of the main lamp and pilot lamp are respectively included in circuit with these lamps in conventional manner for insuring independent: operation thereof. By means of the frame member l3, the lamp conductors are maintained in fixed relation and out of the way of the pilot bulb and render the wiring assembly at once compact, secure and safe.

As has been heretofore indicated, the construction herein involved is'adapted not only to socalled floor lamps but also to table lamps, in which latter the standard is of materially reduced length. Usually, the table lamp is of necessity similar and more compact 'in the immediate vicinit'y'of the main lamp than is the floor lamp' are joined together by an internally threaded boss 38 instead of by a solid head as in the previous case, the upper and lower bosses 38 and 33 being respectively provided with transverse apertures40 and 4| in the side walls thereof through which are threaded the conductors which lie inlthe wiring clearance groove 42 formed in the side arm 31. c v V In this modified form of construction, the main lamp socket 43 is connected by means of a suitable nipple (not shown) directly to the connecting harp-like frame member, this nipple being inthreaded engagement with the internal threadedabore of the upper-boss 38; The wiringqleadingz to the main: lampsocket 4:3? emerges from: the: upper extremity of the. wiring, clearance: groove: 42 andisthreaded through. the transverse open? ing, .411. inthe upper boss. 38 andthus. upwardly, tlirbughthe bore of thatv boss to the, lamp socket 43 In' all other respects, the harp-like connect"- in-g frame member ofthe herein-described modified form functions in the same manner andfor the-same'p urposeas that of the form previously described.

It will be noted that in the arrangement shown in Figures 1 to 6, the upper shell 33, which rests upon the globe 3| is secured in position by means of set screws 34 threadedly engaged into the solid head of the harp element I3. In the modified form of construction as shown in Figures 7 to 11, the upper shell 44, which is the equivalent of the shell 33 of Figure 2, is secured in place by means of set screws 4545 threadedly carried by said shell and projecting into the annular groove 46 of a holding member 41 secured in position above the harp-like connecting member. This shellholding member with its annular groove 46 formed in the peripheral edge thereof eliminates the necessity of accurately registering the set screws 45 with threaded apertures therefor as in the case of the construction shown in Figure 2.

As in the previously described construction, the upper shell 44 serves conjointly with the lower shell 48 to securely clamp in position the intermediate light transmissible globe 49 and said shells and globe when secured together as shown conjointly provide a completely enclosed housing for the pilot lamp 50, this housing being openable at will to remove and replace the pilot lamp by the simple expedient of loosening the said screws 4545 sufiiciently to permit the upper shell 44 and the globe 49 to be raised vertically to a height sufiicient to afford access to the pilot lamp. It will be understood, of course, that in order to raise the shell 44, the main lamp switch knob must be removed and to that end this knob is of the removable type as in the construction previously described.

What is claimed as new and useful is:

1. An element for a lamp assembly comprising a substantially hollow rectangular shaped member having a pair of laterally spaced legs, an internally threaded boss at the lower junction of said legs for securing said member to a supporting structure, and means at the upper junction of said legs for supporting a lamp socket in vertically spaced relation to said supporting structure, said means being in the form of a solid head having a wiring clearance groove in one side thereof, one of said legs being provided with means to receive and fixedly support a pilot lamp socket and removable lamp wholly between said legs.

2. In a lamp, a support therefor, a harp-like element secured to and extending axially of said support, said harp-like element including a pair of laterally spaced legs joined together at their top and bottom extremities, means at the lower junction of said legs for securing said element to said support and at the upper junction of said legs for supporting a main lamp socket immediately above said element and in vertically extending position, an upwardly presenting cup-shaped opaque member having its lower edge fixedly secured below said element, a light transmissible member movably associated with and arranged to rest upon said fixed cup-shaped member, a second opaque member engageable with the upper extremity of said light transmissible member and movable together: with: the: latter; said. second opaque memberbeing:v extended: upwardly. to; embracesaid main-5 lamp; socket; means forsecuring; sa dPse ond; opaque m m er fixedly i p sition. whereby to clamp saidlight' transmissible member ill-secured position between said: opaque members said. last-mentioned means including a plurality" of set screws arranged; circumferentially about and; extending radially through said second. opaque member for engagement with a part disr; posed interiorly of said opaque member and fixed to said harp-like element, and a pilot lamp disposed between the legs of said harp-like element whereby said lamp is embraced within and completely enclosed by a surrounding enclosure formed of said opaque members and said lighttransmissible member.

3. An element for a lamp assembly as defined in claim 1 wherein the solid head at the upper junction of said laterally spaced legs includes means for freely passing lamp conducting wires upwardly beyond said head while confining said wires within the perimetral limits of said head.

4. In a lamp, a support therefor, a harp-like element secured to and extending axially of said support, said harp-like element including a pair of laterally spaced legs joined together at their top and bottom extremities, means at the lower junction of said legs for securing said element to said support and at the upper junction of said legs for supporting a main lamp socket immediately above said element and in vertically extending position, an upwardly presenting cupshaped opaque member having its lower edge fixedly secured below said element, a light transmissible member movably associated with and arranged to rest upon said fixed cup-shaped member, a second opaque member engageable with the upper extremity of said light transmissible member and movable together with the latter, said second opaque member being extended upwardly to embrace said main lamp socket, means for securing said second opaque member fixedly in position whereby to clamp said light transmissible member in secured position between said opaque members, and a pilot lamp disposed between the legs of said harp-like element whereby said lamp is embraced within and completely enclosed by a surrounding enclosure formed of said opaque members and said light transmissible member, said last-mentioned means including a plurality of set screws spaced circumferentially about said second opaque member and extending radially therethrough and a solid head provided at the upper junction of the legs of said harplike element having circumferentially spaced threaded sockets therein for respectively receiving said set screws. 7

5. In a lamp, a support therefor, a harp-like element secured to and extending axially of said support, said harp-like element including a pair of laterally spaced legs joined together at their top and bottom extremities, means at the lower junction of said legs for securing said element to said support and at the upper junction of said legs for supporting a main lamp socket immediately above said element and in vertically extending position, an upwardly presenting cupshaped opaque member having its lower edge fixedly secured below said element, a light transmissible member movably associated with and arranged to rest upon said fixed cup-shaped member, a second opaque member engageable with the upper extremity of said light transmissible member and movable together with the latmeans for securing said second opaque member fixedly in position whereby to clamp said light transmissible member in secured position between said opaque members, and a pilot lamp disposed between the legs of said harp-like element whereby said lamp is embraced within and completely enclosed by a surrounding enclosure formed of said opaque members and said light transmissible 10 ter, said second opaque member being extended upwardly to embrace said main lamp socket;

member, said last-mentioned means including a plurality of set screws spaced circumferential 1y about said second opaque member and extending radially therethrough, and a circular member. disposed above and secured to the upper junction of the legs of said harp-like member and having an annular groove therein adapted to receive said set screws.

' PAUL C. CALISSI.

Images