US2532821A

US2532821A - Electric lamp

Info

Publication number: US2532821A
Application number: US729126A
Authority: US
Inventors: Rosenfeld Lawrence
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-02-17
Filing date: 1947-02-17
Publication date: 1950-12-05
Anticipated expiration: 1967-12-05

Description

Dec. 5, 1950 RQSENFELD 2,532,821

ELECTRIC LAMP.-

Filed-- Feb. 17', 1947 ATTORNEY Patented Dec. 5, 1950 UNITED PATENT OFFI---CE ELECTRIC LAMP Lawrence Rosenfeld, New York, N. Y.

Application-February 17, 1947, SerialNo. 729,126

'3 "Ciaima (Cl. 240-`81) The present invention relates to an ornamental lelectric lamp and refers more particularly to a lamp in which the electric light bulb lis held in inverted position and surrounded vby a translucent diffusing globe.

An object of the present invention -is to provide la lamp adapted to hold an electric light bulb in the lowest possible inverted position while at the same time it provides a translucent ditusing member which may be conveniently removed when the bulb must be replaced.

A further object is the provision of means for tilting the bulb, without tilting the translucent globe.

A further object is the provision of a translucent rigid shade supported on the bulb support and tiltable relative thereto.

Still another object is that all of the above functions shall be embodied in a lamp of striking characteristics of appearance being compact and of graceful outline.

In accomplishing the object of the present invention, an ornamental lamp body is provided with a base which preferably embodies the features of my co-pending application led on April 23, 1947, Serial Number 743,444. Said lamp body may be in the illustrated form of a vase, or alternately may be a cylinder, or any shape desired. Extending upwardly and laterally is a hollow arm adapted to carry interiorly the electric lead wire. Said arm curves back to a substantially central point above the lamp body, comprising a straight terminal portion. An inverted electric bulb socket is mounted at the end of said arm by means of a sleeve slidable on said arm. Said socket is rotatable above the axis of said straight terminal portion and settable in position by means of a set screw.

Above the socket is located a ball socket, mounting a shaft connected to a ball, the shaft comprising av collar and a threaded portion and constituting a support for a substantially flat translucent rigid shade member held in position against the collar by an ornamental nut threaded onto the shaft. The shade member is thus tiltable by reason of the ball socket mount, relative to the electric light bulb .socket of the lamp.

A conventional electric light bulb is normally held in the electric light bulb socket, and is surrounded in operating position by a translucent globe mounted substantially7 immediately above the `lamp body and at the base of the arm. YIn order to replace the electric bulb, the globe must be loosened from its support and the bulb socket rotated about the axis of the straight portion of the arm, permitting the globe to be withdrawn downwardly from around the bulb.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and vaccompanying drawing, and to the appended claims in which the various novelfeatures of the invention are more .particularly set forth.

In the accompanying drawing forming a material part of this disclosure:

Fig. l is a side elevation of my improved lamp.

Fig. 2 is a partial vertical sectional view on the line2-2 of Fig. l.

Fig. 3 is a horizontal sectional View on the liner 3--3 of Fig. 1'.

Fig. 4 is a partial vertical sectional viewon the line l-t'of Fig. 2.

Referring now in detail to Vthe drawing, my improved lamp I0 comprises the base portion I I, pedestal portion I2 mounted on the base and a body portion I3 mounted on the pedestal. The body portion I3 is substantially in the shape of a vase comprising a neck portion I4. rlhe electric lead wire I5 is led in through base portion II and extends interiorly of bodyportion I3 and into a C-shaped arm portion I6. Within they body portion I3 the wire I5 is enclosed by a tube II which extends longitudinally therethrough. The neck opening I8 of neck lportion I4 is closed by washer I9 which is held in position on the top end of the tube Il by 'a coupling 2U which threadedly engages tube I'I and which coupling V2II is formed with a T-shaped opening.

Arm I6 may be of any length. It may be eX- tendable 'and is threaded into the side opening of coupling 20 and the globe mount ZI is threaded into the upper opening of coupling 20. Arm I6 extends curvedly laterally outward and upward from coupling 2E! thence straight upward and finally laterally straight inwardly to a point substantially on the prolongation of thev axis of' the tube I'I and the body I3. On the straight terminal portion 22 of arm It there is rotatably mounted by means of a sleeve 23 the electric light bulb socket 24 which `is normally in an inverted vertical position. Sleeve 23 is provided with a set screw 2.5 by which it may beheld against rotation lrelative to terminal portion 22..

Socket 24 is therefore rotatable in a plane. perpendicular to the straight Aterminal portion 22 of arm I6.

Mounted on socket 24 and coaxially thereaibove,

is the externally threaded pipe 26 whose uppery end is formed to constitute a :seat for the Aball 121. A threaded shaft 2,8 is connected'to 'the ballv2L'I and an externally knurled casing 2S 'thread'edly engages pipe'ZS, constituting therewith and ball 27 a ball socket mounting for shaft 218. Shaft 28 is vfurther provided with a collar 30 and a translucent substantially flat and rigid shade member 3| is mounted on shaft 28 against collar 30 and held against collar 30 by the ornamental nut 32. Shade member 3l is thus tiltable about the ball 21, all of such tilting movement being relative to pipe 26 and all other .parts of lamp l therebelow. An expansion spring 21a is positioned within the top end of the pipe 2S and operates between a shoulder 26a formed within the pipe and the ball 21 to urge the ball into frictional engagement with the casing 29 so as to retain the shade member 3l in desired tilted positions.

The translucent globe 33 is mounted by means of a split washer 34 in globe mount 2l and extends approximately concentrically about the spherical portion 35 of electric light bulb 36, having an open upper neck 31 as well as the conventional open lower neck 38. In its operative position the globe 33 is xed relative to body I3, and may be removed by operation of set screws 40 which engage the split washer 311, when it is desired to replace electric light bulb 33. In such event, the globe 33 is moved upwardly out of its mount 2 l, set screw 25 is then loosened and socket 24 of bulb 36 is revolved about the axis of portion 22 of arm i9 as indicated in Fig. 4, whereby globe 33 clears mount 2l and may be withdrawn downwardly therepast. As globe 33 passes downwardly, electric light bulb 39 passes through the neck portion 31 and globe 33 is then completely clear of electric light bulb 3S which may now be unscrewed from its socket 24. The operation is reversed in putting the lamp together for operation with a new electric light bulb 39.

It will be noted that lamp i9 is provided with two translucent rigid members, globe 33 and shade 3l, shade 3l in its illustrated position of Fig. 1 being perpendicular to the radius of globe 33 passing through the center of its upper neck 31 so as to completely shade neck opening 31, and that shade member 3i is tiltable in all directions relative to neck opening 3l' so as to provide less shade and more reflected light in any direction as desired. Convenient means are further provided for the replacing of light bulb 3B within globe 33 as necessary.

It is to be understood that any suitable lampshade may be secured in position by the usual ornamental nut 32 and may be swivelled or tilted with respect to the diffusing globe 33.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the .preoise construction herein disclosed and the right is reserved to all changes and modiiications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

l. In an electric lamp having a base and a C-shaped arm having one of its end portions attached to the base and extended vertically therefrom, an inverted electric lamp socket positioned at the free end of the other end portion of the C-shaped arm, a light bulb in said socket and depending therefrom, a globe mount on the end portion of the C-shaped arm concentrically below said lamp socket, a globe rested in said globe mount and formed with a top opening through which the bulb extends to the interior of said globe, a shade member tiltably mounted above the lamp socket to shade the top opening 0f said globe, and means pivotally attaching said lamp socket to the free end of the other end portion of the C-shaped arm, whereby said globe may be lifted vertically out of said globe mount and pivoted with said light bulb about the pivotal mounting of said lamp socket to a position in which the globe is clear of said globe mount after which the globe may be moved downward free of the bottom of said bulb.

2. In an electric lamp having a base and a C-shaped arm having one of its end portions attached to the base and extended vertically therefrom, an inverted lamp socket positioned at the free end of the other end portion of the C-shaped arm, a light bulb in said socket and depending therefrom, a globe mount on the one end portion of the C-shaped arm concentrically below said lamp socket, a globe rested in said globe mount and formed with a top opening through which the bulb extends to the interior of said globe, and means pivotally attaching said lamp socket to the free end of the other end portion of the C-shaped arm, whereby said globe may be lifted vertically out of said globe mount and pivoted with said light bulb about the pivotal mounting of said lamp socket to a position in which the globe is clear of said globe mount after which the globe may be moved downward free of said bulb.

3. In an electric lamp having a base and a C-shaped arm having one of its ends attached to the base and extended vertically therefrom, a globe having an open top mounted on the attached end of the C-shaped arm, an inverted lamp socket pivotally mounted on the other end of the C-shaped arm and having a. light bulb depended therefrom and into the open top of said globe, an externally threaded pipe extendedvertically upward from said socket and having its top end formed with a seat for a ball, e, ball engaging said seat, a casing threadedly engaged upon said pipe over said ball for holding the ball in position on the seat and formed with a top opening, a. threaded shaft extending vertically from said ball and freely through said top opening of said casing and being tiltable with said ball to various inclined positions, and a shade member on said threaded shaft for shading the top opening of said globe in all tilted positions of said shaft.

LAWRENCE ROSENFELD.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 999,813 Losey Aug. 8, 1911 1,040,943 Handel Oct. 8, 1912 1,058,181 Jones Apr. 8, 1913 1,096,440 Lynch May 12, 1914 1,354,813 Feyrer Oct. 5, 1920 1,495,447 Schweitzer May 27, 1924 1,665,703 Kernes Apr. l0, 1928 1,697,037 Witz Jan. 1, 1929 1,974,077 Lynch Sept. 18, 1934 2,264,145 Chilo Nov. 25, 1941 FOREIGN PATENTS Number Country Date 210,560 Germany June 4, 1909