Патент USA US2406480код для вставки
Aug. 27, 1946. w.'A. TRATSCH 2,406,480 READING LAMP Filed July 15, 1944' _____:,- Patented Aug. 27, 1946 ‘ 2,406,480 . gUNITED PSTATES~< vml'rENT err-ICE 2,406,430 _ READINGYLAMF Walter A. Trat'sch, Chicago, Ill. Application July 15, 1944, Serial No."545,080 ' .‘2Glaims. This invention relates to certain novel im-‘ provements in reading lamps. More speci?cally the invention relates to a reading lamp which (Cl. 240-4) 7 ' a smaller‘ diameter ‘than 'the' section ‘IT SO as to ?t therein for reasons and in the manner herein- . after set forth. The section I8 is secured in any suitable manner to the socket l4 and at its outer of the bed and has for its principal object the 5 end provides a Wall IS. The section |“|, like the provision of an improved construction of this > section I8, is semicircular in cross section and, at character which will be highly efficient in use and one end, section I‘! provides a collar 20 adapted may be attached in a suitable manner to the head economical in manufacture. to rotate freely upon the socket l4. The opposite One of the objects of this invention is to pro end portion of the section I8 provides a wall 2|, vide a reading lamp especially adapted for at 10 and this wall 2| by means of a pin 22 is rotatably tachment to a bedstead at the head thereof and connected to the end wall l9. . constructed in such manner as to permit the user Carried by the collar 20 is a segmental con to increase or decrease the ?eld of light to the ductor ring 22, Fig. 3, and this conductor 22 has comfort and convenience of the user. contact with a head 23 of a conductor 24. Fig. 2, A still further object of the invention is the pro 15 in turn having connection With the cup 25 of the vision of means for permitting the above adjust socket l4 into which the bulb I5 is threadably ment without requiring the bed light to be de tached from its ?xed position upon the bedstead Secured to the section H on opposite ends and without extinguishing the light. thereof as at 26, are the ends 21 of a cord 28. This A still further object of the invention is the 20 cord 28 has one branch 29 thereof payed through provision of means for accomplishing the above an opening 30 formed in a guide block 3| secured adjustment, which is simple in nature and re as at 32 to the cover section | 8. The other branch quires very little effort on the part of the user to 33 of this cord is payed through an opening 34 bring about the desired result. formed in the block 3|. Any means may be em 25 ployed for attaching the bed light to the bedstead Other objects will appear hereinafter. l3. The invention consists in the novel combination and arrangement of parts to be hereinafter de In use, when the sections I‘! and I8 are in op scribed and claimed. posed relation with respect to each other, they The invention will be best understood by refer provide a complete enclosure for the electricbulb ence to the accompanying drawing showing the l5. In this position of the sections I1 and Hi, the preferred form of construction, and in which: conductor ring 22' will be rotated from engage Fig. 1 is a fragmentary perspective View of 'a ment with the conductor 24 so as to disconnect bedstead showing my improved invention asso the electric bulb from'the source of electric en— mounted. ciated therewith; Fig. 2 is a side elevational'view of the inven tion; . ' ergy 35.‘ The user, to energize the electric bulb and to permit the emission of the light rays from the enclosure, will hold the cord 28 between his or her ?ngers and, by pulling upon the left-hand Fig. 3 is a sectional detail view taken substan tially on line 3—3 of Fig. 2; branch 29 thereof (Fig. 4) , the section |8wil1 be Fig. 4 is a sectional detail view taken substan caused to revolve within the section I‘! and in so tially on line 4-4 of Fig. 2; and revolving, the slit or opening 36 will be enlarged Fig. 5 is a sectional detail view taken substan to increase the light area. Should the reader tially on line 5—5 of Fig. 2. desire to reduce the light area, he does so byv The drawing illustrates the preferred form of applying pulling force to the right-hand cord construction by which the several objects of my invention are accomplished. In this connection branch 33 to rotate the section IS in an opposite a plug is indicated at l0. and this plug is prefer direction thus to diminish or reduce the Width ably arranged in, a strap I I having a resilient ex of the slit 36. tension |2 whereby the latter may be releasably By this arrangement, the reader, with the mini clamped upon a bed ?xture |3 such, for example, mum degree of effort and without removing the as a bedstead at the head thereof. Connected to 50 reading lamp from its attached position, may ade this plug in. the usual manner is a socket I4, and just the area of the ?eld of light. In pulling upon threaded into this socket M is an electric bulb l5. either of the cord sections, 29 and 33,~the force Carried by the socket I 4 is an enclosure l6 for the bulb l5. This enclosure |6 comprises two inter of the pull is exerted upon the block 3|, which ?tting sections I1 and I8, the section l8 being of 55 blQCk 3! transmits the force to the section l1, 2,406,480 3 .tion 18. > 4 sections for the emission of light from the light ‘causing the same to ‘rotate relative to the sec source, said means comprising a cord having op ' posite end portions connected to one of said sec-P tions and a member having spaced perforations - through which the cord is passed in opposite directions. 2. A reading lamp comprising a socket, a light bulb‘ mounted in said socket, an enclosure for said 'While I have illustrated and described the pre ferred form of construction for carrying my in vention into e?ect, this is capable of variation ' and modi?cation‘ without departing from the spirit of the invention. 1, therefore, do’ not wish to~vbe limited to the precise details of construc light bulb comprising two telescopically arranged tion set forth, but desire to avail myseli of such 10 sections each formed substantially semicircular variations and modi?cations as come within the ‘ scope of the appended claims. in cross section and rotatable relative‘ to each other, means for rotating said sections relative Having thus described my invention, ,what _I_' ' . tov each other to- provide a slit between said sec claim as new‘ and desire to protect by Letters - ‘ tions for the emission of light from said bulb, said 15 .meanscomprising a cord having opposite end por Patent is: g I i ' ; , jtions connected to one of said sections and a v 1. A’ reading lamp comprisinga source of light,, member means providing an enclosure‘ for the source of light comprising two telescopically arranged sec-‘ ‘ V tions, and means for rotating one of said sections relative to the other to provide a slit between said " 20.. having i spaced perforations through - which the cord is passed in opposite directions. WALTER A. TRATSCH.