US2156617A - Lamp - Google Patents

Description

May'z, 1939. P. c. cALlssl 2,156,617 LAMP 5 Filed Dec. 25, 1958 I I l l "fm y i 34 @UL Patented May 2,1939

t z,i56,611

PATENT OFFICE LAMP Paul C. Calissi,

Philadelphia, Pa.

Application December 23, 1938, Serial No. 247,310

4 Claims.

This invention relates to electric lamps and has as its principal object to provide in the standard of the lamp an auxiliary light of such low wattage that it may serve economically as a pilot to dimly illuminate the room in the immediate vicinity of the lamp. Thus, when the main lighting unit of the lamp is extinguished, the pilot may be utilized to provide subdued illumination sufficient to enable one entering the darkened room to distinguish objects and so avoid any danger of tripping over them.

Other objects and advantages of the invention, such as those relating to details of construction `for enabling ready replacement of the pilot as desired and for incorporating the pilot in the standard of the lamp structure without rendering the pilot so obtrusive as to reduce the desired pleasing appearance of the lamp structure considered as a whole, will be apparent more fully hereinafter.

It will be understood, accordingly, that thel present invention consists substantially in the combination, construction, location and relative arrangement of parts, all as described hereinafter, as shown in the accompanying drawing and as finally pointed out in the appended claims.

In the said accompanying drawing:

Figure 1 is an elevational view of a lamp structure constructed in accordance with and embodying the principles of the present invention;

Figure 2 is an enlarged vertical sectional view showing the pilot lamp assembly embodied in the standard of the main lamp structure; and

Figure 3 is a horizontal sectional view taken on the line 3-3 of Figure 2.

Referring now more particularly to the drawing, it will be observed that the pilot lamp assembly, designated generally by the reference numeral I0, is incorporated within the standard Il of pedestal type lamp I2. While the lamp shown in the drawing is of the so-called iioor lamp type, it will be understood that the present invention is equally applicable to table 'and bridge lamps where the latter are provided in some portion of; the standard thereof with a straight length such as the portion I3 of the lamp illustrated. l i

The standard II of the lamp is parted to provide the aforesaid upper section I3 and a lower section I4, these sections being preferably of tubular or hollow construction and being secured together in axial alignment by a harp element I5, this latter being formed with oppositely bowed side members IE-I6 integrally secured together at top and bottom by internally threaded bosses II and I8. The upper extremity of the standard section I4 is threadedly secured to the lower boss I8 of the harp, while the lower extremity of the section I3 of the Jstandard is similarly secured to the upper boss I1 of the harp. It will be understood, of course, thatthe standard sections I3 and I4 may be secured together in the axially spaced relation shown by any other suitable means so long as adequate space is provided between said sections for accommodation of a pilot bulb I9 and its socket 20, this latter being secured to the upper end of the standard section I 4 in any suitable manner, preferably by a supporting nipple extending upwardly from the section I4 into the lower collar 2| of the pilot lamp socket 20. lThe harp I5 is so shaped relatively to the lamp socket 20 and the bulb I9 that the latter may be readily grasped by the fingers for insertion into and removal from its socket. 20

Secured to the section I4 of the lamp standard is an upwardly presenting cup-shaped member 22 the lower end 23 of which closely embraces and is immovably secured to the said section I4. This cup-shaped member 22 extends upwardly to a point such that its upper free edge 24 lies in a plane below the pilot bulb I9. Resting upon the upper edge 24 of the member 22 is an annular collar 25 having a perforated design in the wall thereof.

Snugly fitted within the perforatedV part 25 is a glass enclosure or globe 26 having an upper bulbous portion 21 upon the upper edge 28 of which rests a metal top enclosure 29. This upper enclosure 29 is complemental in shape to the glass globe 26 and is centrally apertured, as at 30, to snugly but slidably t upn the upper section I3 of the lamp standard or pedestal. A set screw 3i serves to lock the top enclosure immovably in position with respect to the standard so as to prevent accidental axial displacement of the glass enclosure. Preferably, this glass enclosure is frosted or otherwise rendered translucent to light and, if desired, the lower portion 2lia of the enclosure 26 may be so tightly tted within the perforated metal collar 25 that the two parts so fitted together may be-shifted as a unit axially of the pedestal section I3 when the set screw 3| is loosened, this movement being, of course, relative to that of the stationary part 22. Secured to this latter part in any suitable manner is a switch unit 32 for controlling the pilot bulb I9, it being understood, of course, that conventional wiring is employed to permit operation of the pilot bulb independently of the 55 main lighting unit $3 which is secured to the upper end of the standard in the customary manner and is provided with the conventional lamp shade and reector unit 34, and the main lamp switch I5.

To remove or replace the pilot bulb I9 with respect to its socket 20, it is'merely necessary to loosen the securing screw 3| and then raise the glass enclosure and its top axially of the section I3 oi' the lamp pedestal to a height suilicient to permit access to the bulb. While in the arrangement illustrated the part 22 is shown stationary, it will be understood that the upper part 29 may be made stationary in which event the glass enclosure and the lower supporting part 22 therefor would be disposed for axial movementl downwardly along the pedestal section I4 to an extent suiclent to afford access to the pilot bulb I9. Of course, in this latter event, the pilot switch would be secured to the upper immovable part, while the lower movable part would be provided with means, such as a set screw, for secur- -ing it in position.

'I'his invention is susceptible of various other changes and modiiications without departing from the general principles or real spirit thereof, as indicated in the appended claims.

What is claimed as new and useful is:

l. A lamp comprising, in combination, a vertically extending standard formed of vertically spaced sections, a connecting element interposed between said sections for securing the same together in vertical alignment, a lamp enclosure mounted upon said standard and embracing the space between said sections and said connecting element disposed therebetween, said enclosure including a pair of separable opaque parts and an intermediate light transmissible part, one of said opaque parts being immovably secured to one of said standard sections and the other of said opaque parts being movable axially along the other of said standard sections, said opaque parts being adapted to secure in position therebetween said light transmissible part, and a pilot bulb positioned in the space formed between said an intermediate light transmissible part, one of said opaque parts being immovably secured to one of said standard sections and the other of said ,opaque parts being movable axially along the other of said standard sections, said opaque parts being adapted to secure in position therebetween said light transmissible part, a pilot bulb positioned in the space formed between said vertically spaced sections of the standard, and means in the form of a perforated opaque sleeve snugly embracing a portion of said light transmissible part to provide an illuminated decorative effect to said lamp enclosure.

3. In a pedestal type lamp, a main pedestal separated at a point in the length thereof to provide a space for accommodating a pilot bulb, an enclosure embracing said space, said enclosure including a metal shell xedly secured to the standard to one side of said space, a glass globe complementally shaped with respect to and adapted'to fit into said shell and a second metal shell slidably mounted upon said standard to the other side of said space, said metal shells serving as opaque end enclosures for said glass globe between which said glass globe is clampedly secured in position, and a pilot bulb disposed lnteriorly of said enclosure and within, the space formed in the length of said pedestal, said glass globe being movable with said slidable metal shell axially of the pedestal and relatively to said flxed metal shell to effect separation of said globe and xed shell to afford access to the pilot bulb for removal and replacement of the latter.

- 4. In a pedestal type lamp, a vertically extending standard, a harp-like element secured to and extending axially of said standard, an upwardly presenting cup-shaped opaque member secured to the standard immediately beneath said harplike element, a light transmissible member movably associated with said standard and arranged with its lower end adapted to rest upon the annular rim of 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, means for securing said second opaque member immovably in position with respect to said standard whereby to clamp said light transmissible member in secured position between said opaque members, and a pilot bulb of relatively low wattage disposed Within said harp-like member whereby the same is embraced within and completely enclosed by a surrounding enclosure formed of said opaque members and said light transmissible member.

PAUL C. CALISSI.

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