Патент USA US2117188код для вставки
May 1% 1938- J. MARKEL ET AL. 4 2,117,188 ELECTRIC LIGHTING FIXTURE Filed Oct. 28, 1956 s74? INVENTOR .@ . Joseph Mariz‘el am? Z9 Duane ,Zjtlple? BY W A'ri‘olglzv 2 m 4 , Patented May 10, 1938 w UNITED STATES ‘ 2,117,188 PATENT OFFICE 2,117,188 ELECTRIC LIGHTING FIXTURE Joseph Markel and Duane L. 'Ripley, Buffalo, N. Y., assignors to Markel Electric Products, Inc., Buffalo, N. Y., a corporation of New York Application October 28, 1936, Serial No. 108,046 1 Claim. (Cl. 240-137) This invention relates to improvements in elec l6 of the adapter is preferably of a substantially tric lighting ?xtures of the kind wherein a light greater diameter than the socket 1, whereby to modifying means is carried by the socket for the provide an annular space I‘! between it and the lamp. Although not necessarily limited to such said socket. Bayonet slots I8 are formed in 5 use, the features of the invention may be em the body l6 of the adapter to accommodate op ployed to advantage in connection with the posed inwardly extending projections l9 which application of a re?ector, either opaque or trans lucent, to ?xtures of the wall bracket type. One object of the invention is a ?xture in 10 which provision is made for facilitating the at tachment of the light modifying means. A further object is to provide a construc tion which will enable the features of the inven tion to be employed in connection with standard 15 ?xture parts. A still further object is to provide- a‘novel design and arrangement of the parts of the ?x ture, whereby simplicity and economy in con struction are obtained. The invention is illustrated in the accompany 20 ing drawing in which: Figure l is a perspective View, partially in sec tion, of a ?xture embodying the features of the invention. Figure 2 is an enlarged section taken along 25 line 2-2 of Figure 1. Figure 3 is a similar section taken along line 3—3 of Figure 1. Figure 4 is a fragmentary section taken along 30 line 4-4 of Figure 2. v Figure 5 is an enlarged fragmentary section taken along line 5-5 of Figure 2. The features of the invention are illustrated, by Way of example, in connection with a ?x 35 ture of the wall bracket type, the lamp for the said ?xture being indicated at 6. The socket l for the lamp is carried by an arm 8 (Figure 1) which is ?xed to a plate 9, the said plate being available to mount the ?xture upon a wall or 40 other supporting surface. A re?ector l0 and a shade H are associated'with the lamp 6, the said re?ector being carried by the socket 1 and preferably being formed of a translucent plastic material, whereby to permit a part of 46 the light from the lamp 6 to pass through it. The shade II is supported by the re?ector and to this end is formed with an internal bead l2 which rests upon the rim of the re?ector. The socket l, as illustrated, is of conventional 50 design, being of the type which is provided with a threaded section 13. In accordance with the invention the re?ector I0 is mounted upon the socket by an adapter M, the latter being formed with a threaded neck l5 which is screwed upon 55 the threaded section I3 of the socket. The body are formed or provided upon the re?ector Ill, the said slots being diametrically opposed as are the projections. An opening 20, which is of a diameter substantially the same as that of the 10 outside diameter of the body 16 of the adapter, is formed in the bottom of the re?ector, it being noted that the projections I9 extend into the said opening. The body I 6 of the adapter has a conforming ?t in the opening 20 while the pro jections l9 extend into the space I‘! and termi nate short of the socket as best shown in Fig 15 ure 4. In assembling the parts of the ?xture, assum ing that the adapter I4 is screwed into position 20 upon the socket, the re?ector is adjusted so that the projections l9 will enter the open ends of the slots I8. When this adjustment is made, the re?ector is moved to cause the body l6 of the adapter to enter the opening 2|] until the pro 25 jections l9 encounter the bottoms of the slots l8. The re?ector is then rotated to cause the projections to move under the overhanging por tions 2! which de?ne the lateral extensions of the slots. Preferably, the said extensions are 30 slightly tapered so that as the projections ap proach the closed ends thereof they are wedged tightly between the upper and lower walls. From the foregoing it will be apparent that the projections [9 support the weight of the 35 re?ector and hold it against accidental angular displacement. At the same time the engage ment of the wall which de?nes the opening 20 with the body of the adapter prevents the re ?ector from rocking on the projections. The 40 re?ector, therefore, is secured tightly to the socket. The formation of the re?ector from a plastic material has the advantage that the pos sibility of injury to the projections I9 is mini mized. The construction is simple and economi_ cal and enables the use of sockets of standard design if this is desired. A further advantage obtained is that the re?ector and associated parts may be assembled with facility. What is claimed is: 50 The combination with a ?xture having a lamp and a socket for said lamp, said socket having a threaded section, of a bowl-shaped re?ector for modifying the light from said lamp, said re ?ector being formed with an opening and having 2 ' 7 2,117,188 projections which extend into said opening and an adapter for mounting said re?ector upon said socket, one end of said adapter being reduced in diameter and being threaded to- co-operate with the threaded section on said socket, the other end of said adapter having a relatively close ?t in said opening and being spaced from said socket, said other end having bayonet slots formed therein, said projections extending through said slots and into the space between said adapter and vsocket to secure the said parts in co-operating relation. JOSEPH MARKEL. DUANE L. RIPLEY.