US2082689A - Portable lamp - Google Patents

Description

June 1, 1937. DlCKERSON 2,082,689

PORTABLE LAMP Filed March 13, 1937 2 Sheets-Sheet 1 FIG. .1.

INVENTOR. BERT A. D/CKEEJON Bad 8 ATTORNEY.

June 1, 1937. B. A. DICKERSON 2,032,689

PORTABLE LAMP Filed March 13, 1957 2 Sheets-Sheet 2 FIG. 4

INVENTOR. BERT AD/cKE/wwv I ATTORNEY.

FIG.3

Patented June 1, 1937 PATENT OFFlC PORTABLE LAMP Bert A. Dickerson,

Farles Manufact Application March 13,

4 Claims.

ore specifically to those designed to entirely shield the My invention relates m lamps which are "P J upon a desk or table where it is needed.

The principal ;object of my invention is the production of a portable lamp of increased efflciency, owing to the construction making available a larger number of lumens.

A further object is to attain that result by an exceedingly simple and inexpensive construction.

My means of accomplishing the foregoing objects may be more fully comprehended by having reference to the accompanying drawings, which are hereunto annexed and are a part of this specification in which: 1

Fig. 1 is a side elevation of my lamp with parts broken away and in sections showing the light distribution. I

Fig.2 is a vertical sectional view.

Fig. 3 is a detail of a portion of the lamp stand in perspective.

Fig. 4 is a detail stand in perspective.

Similar reference nume parts throughout the entir As shown in the drawi a base I from which exte This standard is-prefer rality of spindles 2, 3, the detail. views, ing 5 which sli of another portion of the rals refer to similar e specification.

ngs, my lamp consists of n'ds upwardly a. standard.

ably composed of a pluand 4, which, as seen in are provided with a central openps over a pipe or tube 6 which is secured to-the base I and provides a passage for the electrical conductors (not shown).

Though I have shown a specific form of enclosure for the tube, it will be clear that any desired enclosing means may be employed. An ornamental appearance may be imparted to the standard by inserting one or more discs 1 below and above the spindles 2, 3 and 4. At the upper end of the tube 8, I mount a short Electrolier 'keyless socket 8.

In this socket I mount an electric lamp bulb 9. Surrounding the socket 8 is a cup member H) which is preferably provided with straight cylindrical sides ll clearly seen in the sectional view.

Inside this cup Ill and snugly telescoping inside the straight sides It I mount a flaring reflector or holder i 2, the lower portion of which is provided with slots lZa to furnish a spring tension against the sides H for taking up inaccuracy or any variation in the cup Ill or the holder I2, and the use of such slots permits the holder to resiliently and adjustably engage the cup member.

uring a corporation of mm Decatur, Ill., assignor to Company, Decatur, lll., ois 1 1937, Serial No. 130,624 (Cl. 240-41) The walls of the holder [2 flare outwardly from the top edge of the straight side walls ll of the cup l0, and terminate at a point in line with the filament 24 of the lamp bulb 9. The inner surface of this flaring portion is provided with a coating of suitable reflecting media thus forming a supplemental reflector so that the light rays impinging thereon are reflected and redirected upwardly where they impinge upon the main reflector I3. The main reflector I3 is pref- 10 erably supported by a stamped frame l4 having oppositely extending leg portions Ha, Mb respectively, projecting from a central upwardly concave flange l5, and having their lower ends flatened as illustrated and preferably riveted to 15 the holder or supplemental refl'ector l2 adjacent its upper edge. In flange Hi there is provided a centrally threaded opening l6 into which is fitted a threaded portion I! of the finial 20, the flange l8 of which has an annulus |8a on the under side adjacent its periphery for circumferential clamping of reflector I3. Finial 20 with its flange l8 and screw portion I'l serves to press the reflector I3 tightly upon the upwardly concave flange l5 of frame I4 thus holding it firmly in 25 place.

Surrounding the recess I9 is a downwardly concave annular portion 2| in the reflector l3 so shaped as to receive and redirect a portion of the direct light rays from the source and the reflected 3O ones from the supplemental reflector l2 onto the working plane.

' The main reflector I3 is provided with an enlarged annular downwardly concaved portion. 22 the edge 23 of which extends below theplane 35 of the upper edge of the supplemental reflector l2. In this manner I completely shield the electric lamp bulb 9from the eyes of the user. But the light rays are reflected and redirected over a comparatively large surface. 4

It will be clear to those skilled in the art that I have utilized the suppo'rt for the reflector supporting frame as a supplemental reflector thus increasing the efflciency of the lamp without materially increasing the expense of manufacture. Moreover, it will be seen that numerous designs .may be produced simply by varying the positions of the discs I and the spindles 2, 3-and 4 without any additional expense. The main and supplemental reflectors are preferably made of opaque material though .obviously they may be con- 'structed of another material if desired.

Having described my invention, what I'regard as new and desire to secure by Letters Patent is:

1. A stand lamp comprising a pedestal, a cup shaped member at the top of the pedestal, an upwardly flaring opaque member having its lower portion adjustably and frictionally engaged by the cup member, a lamp socket in said cup member, an electric lamp in said socket, the upper edge of the member being substantially in alignment with the filament of the lamp, areflector supporting frame secured to said flaring member, reflective means within the member, a concave downwardly facing unitary reflector supported by said frame and having its lower edge extending substantially below the filament of the lamp, and means for securing said concave reflector to the top portion of the frame, axially of the stand lamp.

2. A stand lamp comprising a pedestal, a cup shaped member at the top of the pedestal, an upwardly flaring opaque member having its lower portion frictionally engaged by the cup member, a lamp socket in said cup member, an electric lamp in said socket, the upper edge of the member being substantially in alignment with the filament of the lamp, a reflector supporting frame secured to said flaring member, a reflecting surface within the member, a concave downwardly facing unitary reflector supported by said frame ,and having its lower edge extending substantially below the filament of the lamp, and means for securing said concave reflector to the frame, said concave reflector having a central recess to receive the top portion of the frame; and said securing means comprising a finial threadedly engaging the frame, substantially axially of the stand lamp.

3. In a stand lamp, a base, a tube which extends upwardly therefrom, a plurality of ornamental members surrounding said tube, a cup adjacent the upper end of said tube, a lamp socket threadedly engaging the tube and assembling said cup upon said tube, an electric bulb, an upwardly flaring member having its lower portion telescopically engaging said cup, reflecting means in said member, the upper edge of said member being in a plane with the filament of the bulb, a concave reflector having a central concavity of relatively small radius and. an outer concavity of greater radius carried by said frame,-the lower edge of the concave reflector extending below the upper edge of the flaring member, and means engaging the central concavity for attaching the concave reflector to the frame.

4. In a stand lamp, a base, a tube which extends'upwardly therefrom, an electric lamp bulb supported by said tube, ornamental means enclosing said tube, a cup secured adjacent the upper end of said tube, a lower reflector having its walls flaring outwardly and upwardly mounted in said cup, the upper edge of said reflector being substantially in a plane with the filament of the bulb, a supporting frame secured to said lower reflector, a concave upper reflector carried by said frame and having its lower edge extending substantially below the upper edge of the lower reflector; the lower portion of the lower reflector being slotted to resiliently and adjustably support said reflector in said cup.

BERT A. DICKERSON.

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