US 3413459 A
Description (OCR text may contain errors)
Nov. 26, 1968 R. SONNEMAN COUNTERPOISE LAMP Filed May 31, 1967 IN VENTOR. F/G. 6 faasfr fA A/ 444 mew United States Patent Olhce 3,413,459 Patented Nov. 26, 1968 3,413,459 COUNTERPOISE LAMP Robert Sonneman, 210 E. Gtith St., New York, N.Y. 10021 Filed May 31, 1967, Scr. No. 642,469 3 Claims. (Cl. 240-69) ABSTRACT OF THE DISCLOSURE A lamp having an arcuate body member which is mounted for rotative movement and, in turn, rotatably and pivotally mounts a counterpoise boom having a light means thereon, so that the light means is movable into a wide range of positions.
The present invention relates generally to lamps, and more particularly to an improved lamp in which the light means thereof is readily adjustable in position.
It is highly desirable to be able to readily adjust the position of the light means of a lamp, but in achieving this use cannot be indiscriminately made of connections which allow pivotal, rotative and other degrees of movement between the lamp parts. Care must be exercized, for example, to avoid a construction in which inadvertent movements occur which prevent the user from setting the lamp and its light means in one desired position. Additionally, the mechanical aspects embodied by the lamp to achieve positioning of the light means cannot be permitted to adversely effect the asthetic appearance of the lamp or render the manufacturing cost prohibitive.
Broadly it is an object of the present invention to provide a lamp having a readily adjustable light means which also is of extremely simple construction, has a correspondingly simple mode of operation, and is noteworthy in appearance. Specifically, it is an object to provide a light means in a lamp which is movable through movement traverses with its supporting structure and also independently thereof, and which, despite these many degrees of movement, is not prone to inadvertent movements.
A lamp demonstrating objects and advantages of the present invention includes an arcuate shaped body rotatably mounted at one end and, at its other end, movably mounting a counterpoise boom having a light means. The boom movements, more particularly, consistent with maintaining a simplified construction are only pivotal and rotative but, supplemented by the previously noted rotative movement of the supporting body, render it readily possible to provide a wide range of positions to the light means.
The above brief description, as well as further objects, features and advantages of the present invention, will be more fully appreciated by reference to the following detailed description of presently preferred, but nonetheless illustrative embodiments in accordance with the present invention, when taken in conjunction with the accompanying drawings, wherein:
FIG. 1 is an elevational view, with portions broken away and in section, of a first embodiment of a counterpoise lamp in accordance with the present invention, in which positions of the counterpoise boom of the lamp are illustrated in full line and in phantom line perspective;
FIG. 2 is an elevational view, on an enlarged scale and in section taken on line 2-2 of FIG. 1, illustrating details of the mounting between a lamp support member and the counterpoise boom;
FIG. 3 is a plan view, in section taken on line 3-3 of FIG. 2, illustrating further structural details of the mounting;
FIG. 4 is a front elevational view of the mounting illustrating further structural details thereof;
FIG. 5 is a sectional view showing details of the universal mounting of the light means of the counterpoise boom; and
FIG. 6 is an elevational view of a second embodiment of a lamp according to the present invention.
Reference is now made to the drawings and in particular to the first embodiment of a counterpoise lamp illustrated in FIGS. 1-5 and generally designated 10. A second embodiment of the lamp, illustrated in FIG. 6 and generally designated 10a, is identical to the tfirst embodiment in all major respects except that it is a floor standing model whereas the first lamp embodiment 10 is adapted, in practice, to be supported in an elevated position on a Wall 12 by a wall bracket 14. An essential feature of the lamp 10. as will be more fully described herein, resides in the large number of positions it can assume due to the relative movements between its parts.
More particularly, the lamp 10 includes an arcuate shaped tubular body 16 having one end 16a rotatably disposed in a bore 14a in the wall bracket 14 so that the lamp body 16 is movable through a rotatable traverse about the longitudinal axis of the bore 141:. A lock Washer 18 or similar element is appropriately fixedly mounted on the end 16a and serves as a stop limiting the extent to which this body end is projected through the wall bracket 14. At its opposite end, the body 16 has appropriately mounted thereon a mounting means 20 which connects a counterpoise boom 22 to the body 16 while permitting rotational and pivotal movements A and B, respectively, in the counterpoise boom 22 with respect to the body 16.
The counte-rpoise boom 22 includes a counterweight 24 which is threadably engaged to a threaded end 22a of the boom and also a light means 26 carried on its opposite end. For simplicity sake, the electric bulb, electrical wiring and similar elements which will be understood to be a part of the light means 26 have been omitted as not being necessary for a complete understanding of the present invention. The present invention relates more to the mechanical aspects of the lamp 10 by which the individual parts thereof are movable relative to each other, and thus the drawings and description are confined to these mechanical aspects.
One of the more significant of these mechanical aspects is the provision for rotative and pivotal movement of the counterpoise boom 22 relative to the body 16 which, in the preferred embodiment as illustrated herein, is achieved by the previously noted mounting 20. Mounting 20, as best shown in FIGS. 2, 3, and 4, is formed from a comparatively short length of tubular stock 20a which, at its lower end, has a machined groove 20b providing bifurcated legs 20c. The boom 22 has a reinforcing sleeve 28 thereon through which there is machined a through bore 30, as best shown in FIG. 2. A pivot pin 32 is projected through the bore 30 and the legs 20c and is threadably engaged with threads in the opening in one of the legs 20c. A knurled body 32a on the pin 32 is conveniently gripped and turned to provide threaded engagement of the pivot pin 32 with the one leg 200 until the body 32:: is firmly seated against the other leg 20c. This holds the pivot pin 32 *firmly in place. As a consequence, the boom 22 is free to partake of pivotal movements B about the axis of the pivot pin 32 to the full extent of the clearance of the machined slot 29b. In this regard, it will be understood that the counterweight 24, the lamp means 26 and the distances of each from the pivot are selected so that a counterbalance of weights is effected with the result that the light means 26 will normally remain in any pivoted position in which it is placed. Should any adjustment be required to strike a better weight balance, this is readily achieved by threaded adjustment of the counterweight 24 on the threaded boom 22a which varies the distance of the counterweight 24 from the pivot axis 32. Exemplary distances of C and D, where D is greater than C, are illustrated in FIG. 1.
Mounting 20 also includes appropriate structure for allowing rotative movement of the boom 22 relative to the body 16. To this end, there is included an internal cylindrical plug 20d threadably engaged in the body end 16b and extending slightly beyond this body end. The extending portion of the plug 20d is machined so as to have a reduced cross section 20c and is inserted into the upper opening of the mounting body 20a. A stop pin 20 disposed through a bore in the mounting body 20a extends into the shoulder formed by the reduced section 20e and is effective to hold the mounting body 20a on to the end of the lamp body 16 while permitting rotative movement A in the boom 22 relative to the lamp body 16. The normal degree of frictional binding of the stop pin 20f against the reduced section 20e is sufiicient to maintain or hold the counterpoise boom 22 in any rotative position in which it is placed by the user and thus minimizes inadvertant rotative movement of the boom 22.
Completing the construction of the lamp is a universal mounting means 34 connecting the light means 26 to the end of the boom 22. The mounting means 34 is conventionally constructed and includes a body 34a threadably engaged to the boom 22 and having a sphericallyshaped aperture 34b accommodating a spherical element 36a of a lamp-mounting fixture 36.
Referring now to the second lamp embodiment 10a, it will be understood that it is identical in all major respects to the already described lamp 10 and, as such, the same parts are designated by the same reference numerals. The major difference is that the embodiment 1011 has a floor stand formed by an upstanding tubular member 38:: rotatably receiving at its upper end the lamp body 16a and having at its opposite end a laterally extending base 381) of suflicient extent to prevent tipping of the lamp 10a.
A latitude of modification, change, and substitution is intended in the foregoing disclosure, and in some instances some features of the invention will be employed without a corresponding use of other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistant with the spirit and scope of the invention herein.
What is claimed is:
1. A lamp comprising a support member having an arcuate shape bounding a semicircular clearance space operatively arranged in a vertical orientation with said clearance space situated below said support member, support means operatively arranged to rotatably mount one end of said support member, a counterpoise boom including a counterweight and a light means supported on opposite ends of said counterpoise boom, and mounting means at the opposite end of said support member operatively effective to rotatably and pivotally mount said counterpoise boom in a depending relation on said support member so as to be movable through rotatable and pivotal traverses relative to said support member within said clearance space beneath said support member.
2. A lamp as defined in claim 1 wherein said counterpoise boom and said counterweight are threadably engaged with each other such that the balance of said counterpoise boom is adjustable by threadably adjusting said counterweight on said counterpoise boom.
3. A lamp as defined in claim 1 wherein said support means includes an upstanding tubular member adapted to rotatably accommodate an end of said support member therein and having a laterally extending base at its opposite end.
References Cited UNITED STATES PATENTS 1,714,003 5/1929 Deach 24073 1,753,553 4/1930 Deach 240-81 2,299,683 10/1942 Curtis 24081 3,185,838 5/ 1965 Warshawsky 240-S1 3,275,824 9/ 1966 Hinds 240-81 FOREIGN PATENTS 285,045 5/1929 Great Britain.
686,483 1/1953 Great Britain.
541,770 4/1956 Italy.
NORTON ANSHER, Primary Examiner.
M. H. HAYES, Assistant Examiner.