US1647053A - Pedestal lamp - Google Patents

Description

Oct. 25 1927.

R. PF/(FFLE PEDESTAL LAMP Filed Feb. 12, 192s Patented Oct. 25, 1927.

UNITED STATES 1,647,053 PATENT oFFlcE.

Bonner Prin-Ln, or scHwnNNmcnN-oN-mncm amm. rnnnsrar. LAMP.

Application led February 12, 1926, Serial H0- 87904, and in Germany October 22, 1984.

This invention relates to a pedestal lamp for electric lights which, for transport, can be easily taken to pieces and put together again at the place of use, the'lamp shade being movable to such an extent that 1t can be adjusted into any desired osition at any point of a semispherical sur ace the radius of which is equal to the length of the arm of the lamp, the wire strand guide mslde the elements of the lamp being not damaged by this adjusting.

The lamp according to the invention 1s composed of three main parts screw-connected with one another, e. g. the lamp foot, the lamp arm and the lamp shade said lamp shade being also composed of several pleces so that the glass insertion in the same can be well packed.

r1`he greatest possible movabilityand adjustability of the lamp is obtalned by mounting the lamp arm rotatably 1n the lamp foot, the rotation being limited to 180 by means of two stops 1n order to prevent the wrenching ofi' of the wlre strand; `by the use of a exible tube as lamp arm whlch is adapted to be bent over in forward or backward direction and can be moved along the two semi-circles limited by the stops; by the use of a box-shaped connection-place between the lamp arm and the shade holder,

said connection piece having a lid which might be unscrewed in order to facilitate the insertion of the wire strand; by the pivotable mounting of the lamp shade 1n the direction of its longitudinal axis in its holder; and finally by the twisting of the flexible metal tube.

An embodiment of the invention is shown, by `way of example, in the accompanying drawings which illustrate the improved adjustable electric lamp. y

Fig. 1. shows the improved pedestal lamp in elevation.

Fig. 2 isV alongitudinal section through the bearing of the lamp arm showing Ithe stops and the screw connection.

Figs. 3 and 4 show in cross section respectively in plan view the disk mounted on the lamp foot and the stops on the same.

F1 5 shows the lamp foot mounted on an adjustable clamp.

Fig. 6 shows in side elevation the lamp arm with open box-shaped shade.

Fig. 7 shows in side elevation the lamp arm with a closed box-shaped shade.

Fig. 8 is a longitudinal section through )scratching of the table when the the screw connection for the shade which is composed of several parts.

The lamp arm 2 made of a iiexible metal tube is pivotally mounted in the cast iron foot 1 and holds bymeans of a box shaped connecting piece 3 the holderfi carrying the lamp socket 5 with incandescent lamp 6 and the lamp shade 7. In a groove in the lower surface of the foot 1, a ring 8 of rubber, fibres or the like is inserted to revent amp is moved on the same. The cast iron lamp foot 1 is covered with a metal rosette 9. A switch 10 is mounted in the lamp foot, the press knob or handle of which projects from the outer surface of the oot.

Between the upper surface of the lamp. fooi'J 1 and the rosette 9 a disk 12 is inserted which has ltwo downwardly directed studs engaging with corresponding cavities in the lamp foot 1 so that the disk is prevented from rotating, the disk 12 having further two upwardly directed studs 14 which serve as stops for the nipple 15 at the lower'end of the lamp arm 2, said nipple having a horizontal abutment pin 16. The sto 14 and the abutment pin 16 are covered by a metal plate 17, and the lamp arm 2 and its nipple 15 are fixed in the lamp 'foot by means of a nut 18 in such a manner that, if the lamp arm is bent down on the front side of the lamp foot 1, itcan rotate in the semicircle limited by the stops 14, and ir it is bent backward it can rotate in a. similar semicircle on the rear side of the lamp foot limited by said stops 14 e. g. in all in a full v circle around the lamp foot.

The lamp arm 2 might be mounted in a similar manner in a clamp 19 in which case the nipple 15 is screwed into the clamp so that the lamp arm 2 rotates in the nipple. the rotation being limited to 180 by two stops 20 mounted in said clamp 19.

If the lamp has to be packed for transport the screw connection can be easily unscrewed.

The box-sha ed connection iece 3 serving to connect the am arm 2 wit they holder 4 for the lamp sha e has a screw lid 21 so that a wire strand 33 can be easily inserted. Owing vto this arrangement it is possible, in combination with the limiting of the rotating movement of the lamp arm 2, to conduct the wire strands 33, notwithstanding the great movability ofthe lamp arm 2, from foot 1, across switch 10, through the lamp arm 2, the connecting piece 3, the shade holder e to the lam socket so that it is invisible and inviola le.

The lamp shade 7 is made of metal, veneer or glass and has the parabolic shape of a box-sha ed shade open at the lowerend or of a ciosed. shade the upper portion 7 of which is made of green glass or opaque material, the lower portion 7b being made of dull glass. These insertions for the shade are carried by two end walls 22, 23 rotatably mounted on the arms -of the shade holder and having rooves 24 and ridges 25 into which the si e edges of the insertion pleces are inserted. The end wall 22 is xed on the holder t between the larp? socket 5 and a nut 26, the other end wa 23 being adjustably mounted on a threaded extension 27 of the shade holder by means of a nut 28, which can be fixed in its position by means of a nut 28, which can be fixed in its position by means of a screw 29 a screw 30 serving for adjusting said end wall 23 in accordance with the length of the insertion 7 which insertion after the loosing of nut 28 can be s asily removed.

I claim 1. A pedestal electric lamp, comprising m combination a lamp foot, a switch in said lamp foot,` a diskon the top end of said lamp foot, two stops on said disk, a lam arm made of a iiexible metal tube, a nipp e on. the lower end of said lamp arm and inserted into the top end ofA said lamp foot and traversing said disk, a horizontal abutment in in said nipple so that said nipple and with it said lamp armv can be rotated in said lamp foot between said stops of said disk along a semi-circle on the front side of Lemons said lamp foot and alon a semi-circle on the rear side of lsaid lam oct after saidl lamp has been bent to ma e the said abutment pin engage between said stops from the rear side, a connecting piece on the top end of said lam arm, a holder in said connecting piece, a amp in said holder, andy a lamp shade rotatably mounted in said holder so that this lamp shade can be adjusted into any desired position. I

2. A pedestal electric lamp, com rising in combination a lamp foot, a switc in said lamp foot, a disk on the-to end oi' said lamp foot, two stopson sai disk, a lam arm made of a flexible metal tube, a ni p e on the lower end of said lamp arm andp 1nserted into the to end of said lam foot and traversing sai disk, a horizonta abutment in in said nipple so that said nipple and with it said lamp arm can be rotated in said lamp foot between said stops of said disk along a semi-circle on the front side of said lamp foot and along a semi-circle on the rear side of said lamp foot after said v lamp arm has been bent to make the said abutment pin engage between said stops from the rear side, a connecting iece on the top end of said lamp arm, a ho der in said connecting piece a amp in said holder, a screw lid on said connecting piece to facllitate insertion of a wirestrand through the said foot, switch and connectin piece into said holder, and a lamp sha e rotatably mountedr in said holder so that this lamp shade can be adjusted into any desired position.

In testimony whereof I aix my signature.

ROBERT PFFFLE.

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