US2777944A

US2777944A - Wall lamp

Info

Publication number: US2777944A
Application number: US393677A
Authority: US
Inventors: James P Koch
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-11-23
Filing date: 1953-11-23
Publication date: 1957-01-15
Anticipated expiration: 1974-01-15

Description

Jan. 15, 1957 y, p, KOCH 2,777,944

WALL LAMP Filed NOV. 25, 1955 www www WALL LAMP James P. Koch, Boston, Mass.v Application November 23, 1953, Serial No.' 393,677 2 Claims. (Cl. 240-73) This invention relates to electrical lighting xtures and more particularly to an adjustable electrical lamp support which can be located on a wall in a number of desirable lighting positions.

It is an object of the invention to provide an improved lamp support of the class indicated and to devisev a novel States Patent lamp assembly which can be conveniently and quickly mounted on a wall at any desired point and which may also be moved through-a wide range of desired lighting positions. It is also an object of the invention to provide a wall lamp assembly composed of a limited number of parts which can be cheaply manufactured andreadily assembled. Still another object of the invention is to provide an adjustable mounting for a wall lamp whereby a much more precise positioning of a lamp, both vertically and horizontally, may be realized with a three point engagement of the device on a wall surface.

'Ihese and other objects and novel features will be more fully understood and appreciated from the following description of a preferred embodiment of the invention selected for purposes of illustration and shown in the accompanying drawings, in which Fig. l is a perspective view showing the device of the invention in an operative position;

Fig. 2 is a detail cross-sectional view, partly in elevation; and

Fig. 3 is a cross-section taken on the line 3-3 of Fig. 2.

In the structure shown in the drawings, 2 denotes the oor of a room having a wall 4 on the surface of which it may be desired to support the wall lamp of the invention, for example over a desk, table, or other working surface.

To the surface of the wall 4 I` attach a pair of screw fastenings 6 and 8 which are formed with outer ring portions, as shown in Fig. l. These screw fastenings are located in spaced-apart relation, as noted, and at some suitable height from the floor 2, such as may be correct for shedding light over the above noted working surface. The screw fastenings may conveniently be of a conventional type such that they can be firmly anchored in any customary form of wall construction, such as plaster,

sheathing, and the like.

In accordance with the invention I provide a rigid :support 10, preferably consisting of a tubular member open at either end. I further provide means for suspending the upper end of the support 10 between the screw fastenings 6 and 8 and in an inclined position with respect to the surface of the wall 4. The suspension vmeans may preferably consist of a single length of cord ends of the side portions are further formed into knots 2 20, as shown in Fig.` 2, so that the cords are prevented from escaping from the tubular member once they have been installed.

Prior to the actual threading of these

side portions

12 and 14 into the

openings

16 and 18, they are passed through vthe screwfastenings 6 and 8 in the manner suggested in Fig.4 l. By means of this arrangement the tubular `member 10 will normally assume some position of angularity with its lower end bearing against the wall 4, as shown in Fig. 1.

At the lower end of the support 10, I further provide a friction piece 24 composed of rubber or other tacky material and comprising, in effect, a cap or tip for enclosing the lower end of the support 10. This allows the lower end of the support to frictionally engage against the wall 4 and hold the upper end of the support in an angular position.

At some vconvenient point in the support 10 is formedv an opening through which isvreceived an electricalcable 26 having` connected thereto a plug 28. The cable extends through the tubular body and has its upper outer extremity connected to a light fixture 30 carrying a plastic shade 32 of unbreakable composition.

The electrical cable and the diameter of the tubular member are preferably chosen of such relative sizes with respect to one another that the cable may snugly t within the tubular member 1li in approximately the position illustrated in Fig. 3 of the drawings. With such a proportion of parts the suspension cord when received through the tubular member will lie in snugly fitted relationship between the electrical cable 26 and the inner peripheral surface of the tubular member 10 to provide a limited frictional holding force tending to hold the suspension cord in any desired position of adjustment. However, the cord may be moved around the electrical cable and through the holes 1l and .13 to assume other desired positions or" adjustment when this is required.

In operation the lighting assembly desired is normally positioned in some desired location by engaging the lower end of the support Iii with its friction piece 24 against the wall 4 so that the upperend of the support extends outwardly in an inclined position, such as shown in Fig. l, with the two cords acting as suspension means. It will readily be seen that the light fixture and support can be raised or lowered through a wide range of vertical positions by sliding the cords l2 and 14 through the ring portions of the respective fastenings 6 and S. As this lowering or raising action takes place it will be observed that the light fixture 3) moves either closer to or farther away from the wall surface which permits the fixture to be more precisely placed over a desired point on a working area below the light. ln addition, it should be observed that by means of the two independently acting cords l may also locate the bottom of the support 10 in various laterally adjusted positions on the wall, with the result that to a substantial degree the light xture may be swung in an arc much the same as if it were supported on a universal joint or pivotal arm. The result of these two types of adjustment thus makes it possible for one to swing the fixture from side to side, as well as to raise andlower the iixture into any desired position, as has been suggested by the broken line showing of Fig. l.

I may desire to modify the structure in various respects. For example, I may provide the tubular body with externally located ring portions through which the

cords

12 and 14 may be slidably received and, similarly, I may support the electrical cord 26 externally of the support 10. I may also provide other types of fastenings means, both in place of the screw eyes in the wall 4 and the friction cap 24. Also, if desired, I may include addi- Patented Jan. 15, 1957'1 mi "blaket 15K-@P053 @Kiousions at the vupper end ofthe tubular body 10 to aidin Aholding the fixture 30. l

While I have shown preferred embodiments of the features of the invention, it shoLtLd be understood that various other Lella-,uses and modoatons may :beresortod Lo keeping with the spirit Iand scope of the ,invention as eined by the appended claims. 1 Yi Having `thus ulesorimd` my invention, what I desire fto daim .as new .isz t 1. In ,an adjustable wall lamp structure v,for attagnnient to a vertically `attending wall surface apairsof .fastening elements adapted lobe .secured to `the :said wall suriac inspaced-.apart relationship ,along .a Substantiallyfhorizontally extending line passing through ,the mallsnrfagesaid fastening .elements presenting `ring portions, 4a .Substantally rigid `Silnport eonsisting of ,a tubular body, :said tubular 'body Apresentirli; ,at ,one end thereof openiug @X- tendingrthrough togpposte 4wall,p ortonstosdeiue a-.cord sldeway, a `.Cord member Lslidably .disposed through the cordslidewayand threadedthrongh,thesaid ring portions o'f the fastening members, extremities ofthe xcords extendingfrornthe said 4`ring portions into ,-.anellored relationship Withrespect .to an opposite endof `the-,said,tubular,body and .said cord member y.being of a length '10 lafliustalzily locate thek rigid support. in aninclined position with nespeet *References-Gited-'in the ileof this patent f UNifIrED I-smmes fPATENTs 837,349 Smith Dec. 4, 1906 1,246,533 Bosworth Nov. 13, 1917 1,262,802 Irwin Apr. 16, 1918 :13662;5168 loell n. lf-....M--g Mar.. 123, `159,28