US 2618739 A
Description (OCR text may contain errors)
NOV. 18, 1952 T, FLE|SHMAN 2,618,739
STAND LAMP WITH SWINGABLE FLUORESCENT LAMP STRUCTURE THEREON Filed May 15, 1948 2 SHEETS-SHEET l NOV. 18, 1952 1- FLE|$HMAN 2,618,739
STAND LAMP WITH SWINGABLE FLUORESCENT LAMP STRUCTURE THEREON Filed May 15, 1948 2 SHEETSSHEET 2 Patented Nov. 18, 1952 UNITED STATES PATENT OFFICE STAND WITH SWINGABLE FLUORES- CENT LAMP STRUCTURE THEREON Theodore 'F-leishman, Montclair, N..-.I.
Application May '15, 1948, Serial No. 27,246
5 Claims. 1
This invention relates to lamps, and especially to the type intended for the accommodation of fluorescent tubes, and one of the objects of the invention is to provide a lamp structure-of simple, sturdy construction in which the lighting tube and the lamp shade are firmly but adjustably supported.
Another object of the invention is to provide a supporting frame or bracket for the mounting of one or more fluorescent tubes as well as for the lamp shade, in which the bracket as well as the tube and lamp shade carried thereby are for pivotal swinging movement mounted iii-such a manner as to enable it to be swung to various desirable positions while the lamp is in use.
Another object of the invention is to provide, in a lamp of this character, tube-supporting frame means in the form *of a spider mounted eccentrioally and pivotally with respect to the axis of the lamp pedestal, said spider being carried on an arm extending radially from the pedestal and being pivotal about the same, the spider also having means for supporting a *lamp shade and being by means of the above-described pivotal mounting, adjustable to various positions.
The invention alsocontemplates the provision of novel means for supporting one or more of the fluorescent electric tubes; of novel means for seating and positioning the lampshade, and
'will be hereinafter set forth and more particularly pointed out in the claims appended hereto.
'In the accompanying drawings, wherein two illustrative embodiments of the invention are disclosed:
Fig. 1 is a top plan view of a lamp constructed in accordance with the invention;
Fig. 2 is aside elevation of the same, with the lamp shade shown in section;
Fig. 3 is a vertical sectional view through the outer end of the supporting arm showing the mounting of the fluorescent electric tube socket; the view being taken on the line 33 of Fig. 2, looking in the direction of the arrows;
Fig. 3a. is a sectional view, taken on the line 3d3a, of Fig. 3, looking in the direction of the arrows;
Fig. 4 is a top plan view of a modified construction in which a pair of concentrically arranged fluorescent tubes are employed;
Fig. 4a is 'a'sectional view on the line fizz-4a of Fig. 4, looking in the direction of the arrows, and
Fig. 5 is a top plan view of a lamp, with the lamp shade removed, and in which a pair of semi-annular fluorescent tubes is used.
Referring to the structure shown in Figs. 1 to 3a inclusive, I 0 indicates thebase of the lamp, the same being hollow so that it constitutes a chamber or receptacle for the accommodation of the electrical apparatus generally utilized for the ignition of fluorescent electric lamps, such as a transformer, choke, line switch, starter switch and the connections between the same. Secured to and arising from the baseis a'hollow pedestal or standard H having a substantially longitudinal or vertical axis and constituting a conduit for the wiring l2 leading from the electr'ical components just ref-erred to and locatedin the base I l, to the socket l3 'whichaccommodates the annular fluorescent tube 14. The pedestal or standard H may be of any suitable height, its height being dependent upon whether the lamp is intended to rest upon a table'or upon the floor.
At its upper end, the pedestal or standard H is provided with a radially extending hollow arm 15a which also serves as a conduit for the wiring it. At the outer end of the hollow arm 15a is positioned a pivot connection which is threadably attached to said arm and forms a vertically disposed tubular post 15 in which a sleeve 16 is rotatively fitted. Said sleeve 15 is provided in its outer face with a groove il in which a stop-pin l8, projecting through'the wall of the post I?) extends, said stop-pin 18 serving to define the limits of the rotative movement of the sleeve l8 within the post 15 by the abutment of the pin [8 against one or the other of the opposite ends of the groove ll. An externally threaded bushing 19 is threadably received on the interior of the sleeve 13 and said bushing l9 arisesabove the sleeve l6 and projects through .an aperture in a supporting frame or spider 22 being maintained against inadvertent 'displacement after having been fitted in position as described, by means of the set screw 23.
In the embodiment of the invention as shown in Figs. 1 and 2, the supporting frame or spider 29 is provided with a center from which three radially extending bars or arms are directed which are designated, respectively, by numerals 24, 25 and 26. The arm indicated at 24 is that which is mounted upon the bushing l9 and above which is disposed a tube-receiving holder with socket [3. The wiring l2 extends upwardly through pedestal ll, through the hollow arm a; through post [5 and through the aligned sleeve [6 and bushing H! to become connected into the fourreceptacle socket l3 in the known manner. The two radial arms 25 and 26 of the spider are provided near their outer ends with supporting holders 2'! upon which the tube 14 rests, said holders being not electrically connected to the tube, but serving to securely and firmly support it in elevated position and substantially in the same plane as the holder with socket l3 above the spider 20 as shown in Fig. 2. The holders 21 may be made similar in shape and appearance to the holder with socket member [3 to thereby provide a symmetrical and attractive appearance to the structure.
At the outer end of each of the arms 24, 25 and 26 of the spider 2B, is provided a hole 28 or other means serving to engage the downturned ends or tips 29 on three wire brackets 30 extending inwardly from the frame of the lamp shade 3|. It will be obvious that when the brackets 39 have their tips or extremities 29 entered into the holes 28 at the ends of the arms of the spider 20, the frame of the lamp shade will be firmly supported on the spider, and any rotative movement of the spider will cause the lamp shade to be moved along with it.
Since the sleeve I5 is rotative within the hollow post I5 at the end of the arm I5a, and the spider 20 is supported by said sleeve [5, it will be apparent that the spider 25, the tube l4 and the lamp shade carried by the spider, can be swung rotatively about the post l5 to an extent as determined by the limitations of slot or groove 11 and the contact of its end walls with the stop pin [8. The manner in which the lamp shade, tube and spider can be swung is indicated in Fig. 1, wherein the dot-and-dash lines indicate the normal position of the lamp at which time the center of the lamp shade is positioned concentrically or is coinciding with respect to the longitudinal axis of pedestal H. The full lines show one of the positions to which the center common to the spider, lamp and shade can be moved with respect to the longitudinal axis of the pedestal when desired to best position the lamp to thereby meet the requirements of the user. Since the rotative movement of the spider and the parts which it supports and carries, is limited by the ends of the groove II, the shade is thus prevented from forcibly contacting the upper end portion of the pedestal H and being possibly damaged.
In the embodiment of the invention as disclosed in Fig. 4, a pair of concentrically-arranged fluorescent tubes is employed, the inner or smallerdiameter tube being indicated at 33, while the outer or larger-diameter tube is shown at 34. In this embodiment of the invention, the spider 26 is composed of relatively flat, hollow tubing, as seen in the cross-sectional view of Fig. 4a so that one of the arms of the spider, or that designated at 3-5 Will thus constitutea conduit for the wirin I2. The socket for the reception of the fluorescent tube 33 is indicated at 35, and said socket is mounted on the arm 36 and is located relatively close to the inner end of said arm and adjacent to the center of the spider. Mounted near the outer end of said arm is a socket 3'! which receives the prongs of the fluorescent tube 34. Located between the two sockets 35 and 37 is the pivot 38 for the spider 20, said pivot being similar to that described with respect to the structure of Figs. 1 to 3a and shown in Fig. 3. The wiring 12 extends through the hollow arm 35 of the spider and connects to the two sockets 35 and 3'! thereon to supply the current thereto to illuminate the two tubes 33 and 3 The two remaining arms of the spider carry the holders 21 for the support of the two tubes 33 and 34 and the outer ends of the three arms of the spider are formed with the holes 28 for the reception of the ends of the lamp shade brackets 30 in the manner previously explained.
In the embodiment shown in Fig. 5, a pair of semi-annular fluorescent tubes 48 and 4! is shown supported by a four-armed spider $2. The two arms 43 and 44 of the spider constitute a continuous hollow conduit through which the wiring i2 extends to connect to the two double sockets 45 and 46 mounted at the ends of these arms. The tube has the contact pins at its opposite ends entering the receptacles on one side of each of the sockets and 45, while tube H has its contact pins entering the receptacles in the opposite sides of the sockets. Tube ll is centrally supported by a holder ila rising from the arm 45a of spider 42, While tube 59 is similarly supported by holder 4'! arising from arm 58 of the spider. The pivotal connection for the spider 62 is located below socket 45. Each of the arms 33, 44, 45a and 48 is provided at its end with the aperture 28 for the reception of the lamp shade wire brackets 30 as previously described.
By means of the eccentric pivoting of the lampsupporting spider, an arrangement is provided by which the lamp and shade therefor may be swung to position it to best suit the requirements of the individual user. The mounting and supporting means for the fluorescent lamp or lamps is such that these elements are firmly supported and protected, and a sturdy and useful structure results.
Having described several embodiments of the invention, it is obvious that the same is not to be restricted thereto, but is broad enough to cover all structures coming within the scope of the annexed claims.
What I claim is:
1. A lamp structure comprising a pedestal having a substantially vertical axis, an arm extending radially from said pedestal and including a pivot connection, a frame having a center axis, said pivot connection being mounted on said frame near the periphery of the latter and spaced from the frame center axis, said connection pivotally connecting the frame to the arm so that the frame may be swung to a position where its axis will coincide with the vertical axis of the pedestal, a holder including a socket for connection with a fluorescent electric tube, said holder with said socket being positioned on said frame and adjacent said pivot connection and spaced a suflicient distance from said vertical axis of said pedestal so that said pivot connection is located below said tube when connected to said socket, and further spaced apart holders arranged on said frame in substantially the same plane as said holder with said socket for supporting said tube.
2. A lamp structure comprising a pedestal having a substantially vertical axis, an arm extending radially from said pedestal and including a pivot connection arranged adjacent the free end of said arm, a spider including a plurality of bars having a center axis and joined to said pivot connection to pivotally connect the spider to said arm, said pivot connection being positioned at the end of said arm and between said center axis and one of said spider bars in proximity to the end of same, said center axis of said spider normally coinciding with said vertical axis of said pedestal, a holder including a socket for connection with a fluorescent electric tube, said holder with said socket being positioned on said one spider bar and in proximity of said pivot connection and spaced a predetermined distance from said center axis of said spider, and further spaced apart holders arranged on the remaining bars, respectively, and in substantially the same plane as said holder with said socket for supporting said tube.
3. A lamp structure comprising a pedestal having a substantially vertical axis and an upper end, an arm connected to the upper end of said pedestal and extending from the latter in radial direction to terminate in a free end, the free end of said arm being provided with a pivot connection, a spider including at least three bars intersecting each other and forming a center axis at the location of intersection, one of the bars of said spider being joined in the proximity of its end and remote from said center axis to said pivot connection, whereby said spider is swingably supported on said arm, a holder including a socket for a fluorescent electric tube positioned on said one bar and adjacent its end, and further spaced apart holders for supporting said tube arranged on the remaining bars, respectively, and in substantially the same plane and spaced from said center axis as said holder with said socket, whereby said spider may be moved about said pivot connection relatively to said vertical axis of said pedestal.
4. A lamp structure comprising a pedestal having a substantially vertical axis, an arm extending from said pedestal in radial direction to the latter, the extended end of said arm being provided with a pivot connection, a spider including at least three bars intersecting each other and forming a center axis at the location of intersection, one of the bars of said spider being provided with an outer end and being joined by means of the latter to said pivot connection, whereby said spider is swingably supported on said arm, a holder including a socket for connection with a fluorescent electric tube positioned on said one bar and directly above said pivot connection, and further spaced apart holders arranged on the remaining bars, respectively, and in substantially the same plane and spaced from said center axis as said holder with said socket for supporting said tube.
5, A lamp structure according to claim 4, wherein all said holders extend a suflicient distance above said spider bars so that said pivot connection is located below said tube when supported by said holders.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 700,369 Pixley May 20, 1902 1,096,440 Lynch May 12, 1914 1,845,035 Boltuch Feb. 16, 1932 2,215,634 Collins et a1 Sept. 24, 1940 2,350,462 Johns June 6, 1944 2,375,354 Ellner May 8, 1945 OTHER REFERENCES Publication The Magazine of Light, vol. XVI, 1947, No. 1, page 68, June 16, 1947. A copy may be found in Division of this ofice.