US1589845A - Electric floor lamp - Google Patents

Description

J. C. FAETH ELECTRIC FLOOR LAMP June 22 1926.

Filed March 29, 1924 INVENTOR ATTORNE Joseph c. Faem lllllllll 10 bri lliv Patented June 22, 1926.

UNITED' STATES y l 1,589,845 PATENT oFF-lcs.

im C. ILITH, l' HIBIDEN, CONNECTICUT, SIGNOR TO TH H. E. RAUAUD Conm, CF HELDEN, CONNECTICUT, A. COBPCMTION 0F CONNECTICUT.

ELECTRIC FLOOR Ilm.

Application Bled Ieren 88,1924. serial lo. 708,802.

This invention relates to electric light fix'- and more particularly toan electric floor lamp having a swiveled lamp-holding bridge arm.

On object of the invention is to provide a door lamp of the above nature in which the current supplying conducting wires are concealed within a hollow vertical supporting dgpost and in a hollow lamp-carrying arm.

A further object is to provide a device of the above nature which will be simple inexpensive to manufacture, ornamenta in sha e, and very efficient and durable in use.

ith these and other objects in view, there has been illustrated on the accompanying drawings one form in which the invention ma be conveniently embodied in ractice. lgig. 1 re resents a side view of t e lamp support wi the base portion shown partly in section.

Fig. 2 is an enlarged sectional view of the upper portion of the lamp support showing the swivel joint between the bridge arm and the vertical standard. I

Fig. 3 is a sectional view taken alongl the plane 3-3 of Fig. 2 looking in the 'rection ofthe arrows.

Fig. 4 is a side view of a tool adapted to be used for assemblin the device.

Referring now to t e drawings in which like reference numerals denote correspondv ing parts throughout the several views, the

numeral indicates the hollow base of the lam support, said base being convex upwar ly and having its edge resting upon the floor. The upper part of the base 10 is provided with an opening within which its a flanged bushing 11 for receiving a twowire conductor 12 which supplies current to the lamp. The top of the base v10 has a pedestal ortion 13inte-grall formed therewith, said pedestal portion ing provided with a hollow central passage, tapped at its up r part 14 to receive the lower threaded ein?e 15 of a hollow central post 16.

Surrounding the post 16 is an ornamental tube 17, the lower end 18 of which is flared and adapted to seat upon the top of the pedestal portion 13. The upper end of the tube 17 is also enlarged to provide a pair of annular beads 19 and 20 comprising a capital for the standar-d of the lam In order to provide a swive su port for the bridge arm of the lamp, a colar 21 is provided, said collar being seated upon the upper end of the tube 17, and being' composed of any suitable metal havin long wearing properties. The collar 21A as an annular shoulder 22 on its interior, said shoulder forming a seat for a hollow swivel stud 23. The swivel stud 23 is provided at its lower end withv an enlarged central passage 24, which is tapped to engage the threaded top portion 25 of the post 16, said top portion preferably extending a short distance above the top of the outer tube 17 .as clearly shown in Fig. 2.

The upper portion of the swivel stud 23 has a central passa e 26, the diameter of which is about hal that of the enlarged passage 24, said upper passage 26 being countersunk at 27 an ta ped to receive the threaded rod 28 of a too to .be used in assemblin the device. As clearly shown in Fig. 4, t e threaded rod 28 of the assemblin tool is provided with an enlar d cylindrica top portion 29 having a hand e 30. A locking nut 31 is mounted upon the lower part of the rod and has ay pair of side arms 32 extending laterally therefrom in opposite directions.

In order to limit the rotation .of the bridge arm, the swivel stud 23 is provided in its upper portion with an outer annular groove 33 preferably of rectangular cross section. A locking lug 34 is screwed in to the bottom of the groove 33 and has its free extremity disposed below the outer edge of said stud. The locking lu 34 is adapted to interlock with a pin on t e bridge arm to be hereinafter described.

The bridge arm comprises a hollow socket portion 35, an ornamental cap portion 36, a curved ornamental arm 37, and a hollow curved lamp-supporting arm 38 bent downwardly at its outer end, for supporting a lamp socket 39 and a conical lamp shade 40 of any usual standard construction. The lower ortion of the bridge arm socket 35 is 100 provi ed with a de riding neck 41 adapted to fit loosely aroun the outside of the swivel stud 23, and having its bottom edge resting upon the top of the collar 21.

The neck member 41 of the bridge aim 105 socket has an annular groove 42 in its periphery, said groove having a 'countersunk screw 43 passing therethrough. The inner extremity of the screw 43 is unthreaded and comprises a pin which is adapted to extend 11 FIA into the annular groove 33 of the swivel stud 23 to interlock with the locking lug 34, previously mentioned.

As will be clear from the above description, the stationary locking lug 34 will serve as a stop for the sc-rew pin 43 to limit the movement of the bridge arm to slightly less than one revolution in either direction. By means of this construction it will be seen that the conductor cord 12 cannot possibly become twisted or knotted and consequently all danger of stripping the insulation therefrom or otherwise injuring the conductor will be entirely avoided.

ln operation, when it is desired to assemble the device, the hollow tube16 will first be screwed into the pedestal portion 13 of the base 10. The ornamental tube 17 is then slipped down over the tube 16 until it rests on the pedestal 13. The collar 21 is then placed in osition upon the top of the orna- :mental tule 17, after which the swivel stud 23 may be threaded by hand upon the top of the hollow post 16 until it rests upon the shoulder 22 in the collar.

rlhe next operation is performed by using the special tool shown in Fig. 4. 1n this operation, the threaded rod 28 of the tool is screwed into the upper central passage'26 of the swivel stud 23 until the nut 31 engages the top of the stud. The rotation of the b handle 30 is continued until the cylindrical portion 29 engages firmly upon the nut 31, thereby locking the tool securely to the swivel stud 23. The rotation of the tool is then continued for a short distance in order to screw the swivel stud still further down upon the exterior of the hollow post 16. During this operation, the post 16 will be placed under tension, while the collar 21 and the outer tube 17. will at the same time he put under compression, being pressed downwardly against the pedestal portion 13. The stationary parts of the lamp support will thus be rigidily clamped together and will form a stable support for the bridge arm, which may next be slipped into position around the swivel stud. The bridge arm may then be locked in position by driving the screw 43 into the swivel stud groove 33.

One advantage of this invention is that the lamp may be wired through the base of the pedestal so that there will be no wires hanging above the floor which would be in the way.

While there has been disclosed in this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosures but may be embodied in various other forms without departing from its spirit. In short, the inventionl includes all the modifications and embodiments coming within the scope of the followin claims.

Having thus ully described the invention, what is claimed as new, and for which it is desired to secure Letters Patent, is:

1. In a swivel support for an electric lamp, a base, a hollow supporting ost mounted on said base, ay tube surroun ing said post, the top of said post extending above said tube, a collar resting on said tube around said post, a swivel stud seated in `said collar and threaded on said post, a lamp-holding bridge arm fitted over said stud and rotatably engaging said collar, a conductor for supplying current to said lamp, and means for preventing said bridge arm :trom rotating more than one revolution whereby said conductor will be prevented from injury.

2. ln a swivel support for an electric lamp, a base, a hollow supporting post mounted on said base, a tube surroundin said post, the top of said post extending a ove said tube, a collar resting on said tube around said post, a swivel stud seated in said collar and threaded on said post, a lamp-holding bridge arm itted over said Stud and rotatably engaging said collar, a conductor for supplying current to said lamp, said stud havmg a locking lug, and means on the inside of said ridge arm for engaging said lug to prevent said bridge arm from rotating more than one revolution whereby said conductor will be prevented from injury.

3. In a swivel support for an electric lamp, a base, a hollow supportin post mounted on said base, a tube surroun mg said post, the top of sald post extending above said tube, a collar resting on said tube around said post, a swivel stud seated in said collar and threaded on said post, a lamp-holding bridge arm fitted over said stud and rotatably engagmg said collar, a conductor for supplying current to said lamp, said stud having an annular groove on its periphery, a locking lug in said groove and secured to the base thereof, and means on the inside of said bridge arm for engaging said lug to revent said bridge arm from rotating more tllian one revolution whereby said conductor will be prevented from injury.

4. In a swivel support for an electric floor lamp, a base, a hollow post sup orted by said base, a tube surrounding sai post and supported on said base, a collar resting on said tube, a cylindrical hollow stud seated in said collar and threaded upon the top of said post, a bridge arm comprising a hollow lamp-supportmg member and a hollow socket, a concealed conductor cord passing through said base, post, stud, and bridge arm, said socket fitting over said stud and' rotatively mounted on said collar, and interlocking'means. on said stud and socket for preventing said bridge arm :from rotating more than one revolution whereby said conductor will be prevented from injury.

5. In a swivel support for an electric Hoor lamp, a base, a hollow post supported by said base, a tube surrounding said post and supported on said base, a collar resting on`said tube, a cylindrical hollow stud seated in said collar and threaded upon the top of said post, a bridge arm comprising a hollow lamp-supporting member and a hollow socket, a concealed conductor cord passing through said base, post, stud, and bridge arm, said socket fitting over said stud and rotatively mounted on said collar, and interlocking means on said stud land socket for preventing sa-id bridge arm from rotating more than one revolution whereby said conductor will be prevented from injury, said stud being tapped at its upper portion to re' ceive ay threaded assembling tool for permittin said stud to be screwed down u on said holl) ow post to tightly clamp said co la-r and tu e.

6. In a swivel support for an electric door lamp, a hollow base, a hollow ost supported on said base, a tube surrounding said post and also supported on said base, a swivel stud secured on the top of said post for uniting said post and tube into a rigid structure, a lamp-holding bridge arm rotatably mounted on said stud, and interlocking means on said stud and bridge arm to limit thedbridge arm to one revolution on said stu In testimony whereof, I haveaixed my signature to this specication.

JOSEPH C. FAETH.

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