US999998A - Electric-lamp fixture. - Google Patents

Description

W. G. HINB.

ELECTRIC LAMP FIXTURE.

APPLIUATIOR mum 1120.12. 1910.

999,998, Patented Aug. 8, 1911.

W. G. HINB.

ELECTRIC LAMP FIXTURE.

urmcurmn FILED nno.12,'1910.

Patented Aug. 8, 1911.

4 SHEETS-SHEET 3.

UNITED sTA rnsPATENT OFFICE.

WILLIAM C. HINE, OF CONNEAUT, OHIO.

ELECTRIC-LAMP FIXTURE.

Specification of Letters Patent. Patented Aug. 8, 1911.

Application filed December 12, 1910. Serial No. 598,871.

To all whom it may concern:

Be it known that I, \VILLIAH C. Hist, a citizen of the United States, residing at (onneaut, in the county of Ashtabula and State of Ohio, have invented a certain new and useful Improvement in Electric-Lamp Fixtures, of which the following is a full, clear. and exact description, reference being bad to the accompanying drawings.

This invention relates to electric light lixtul'cs such as are used with lamps which are now cvemplified in the Mazda or tungsten lamps. In operating such lamps, which are now the recognized standard ot etliciency for incandescent lamps, it has been considered necessary to preserve a certain relation between the shades and lam )s in order to obtain the best ilhuninative e cuts; that is to say, the best distribution of light. In a shade holder and lam) socket which have been largely einployet for the above purpose, one position of the lam is determined by a head on the socket, w iich is engagzcd by a split ring and the latter by the corresponding portion of the holder, and this head, together with the effective length of the shade holdcr. determines the position of the lamp with reference to the shade or l't'lha'lnl'. In order to determine another position of lamp with reference to the shade or rclh-ctor, a holder of dilterent length is employed. With the. longer holder, lamps ol' the skirt base type are now employed. while with the short holder, lamps of the short base type are now employed. The result is that the customer dcals with a great variety of holders and that the dealer has to carry a large stock of holders and parts.

It is the object of my invention to secure the (llit'itlll light distribution referred to.

with the employment olbut a single holdcl For all standard variations in length and smot' shades and lamps. together with a "construction which will eliminate the net-cs:

, of socket in coujliuclion with the holder.

by providing a fixture which is applicable equally well to such sizes of lamps ,and shades, and, in brief, to reduce the problem of light distribution to a one-fixture basis.

I accomplish the foregoing objects by the construction illustrated in the drawings forming: part hereof, wherein-- Figure 1 represents a vertical sectional view taken through an electric light fixture constructed in accordance with my invention, the lamp being shown in elevation, another size of lamp and shade being indicatcd in dotted lines; Fig. 2 represents a similar View, showing a smaller lamp and shade supported by my fixture; Fig. 3 is an elevation with parts broken away, illustrating the manner in which my invention may be applied to a drop or lengthened fixti'rr'e; Fig. 4 is a bottom plan view of the fixture shown in Figs. 1 and 2, the lamp being omitted; Fig. 5 a perspective view of the supporting and positioning device on saddle forming part of the fixture; and Fig. 6 a perspective view of the cross bar at the top of the fixture shown in said figures.

Describing the various parts by reference characters, 1 denotes a fixture. the same being shown as of the canopy type holder adapted for application to a ceiling. This holder is of light metal, preferably spun brass, havin e an enlarged upper end and being of generally frusto-conical shape. At the extreme top. it is provided with an upwardly directed annular flange 2 which receives a cross bar provided with downturned flanges 4 at its opposite ends, by means of which it is secured in place, as by the screws 5 extending tbrt'mgh the annular flange and the. down-turned flanges. At its central portion, it is provided with a downwardly directed internally threaded bushing 6. by means of which the holder and the attached parts nury be supported by application to the threaded end of a support carried by the ceiling. This supportis frequently provided by a junction box located in the ceiling as well as by a gas pipe u'ojectxmg through the ceiling. .\la couveun'. '13 point lllltllilt'tllillt' of the ends thereof, the holder is provided with a substantially horizontal ledge 7, for a purpose to be described, the body of the holder immediately above such ledge being substantially cylindrical. At its lower end, the holder is provided with an annular head 8 adapted to receive the adjusting screws 9 by which the shade or reflector 10 is supported from the holder, the shade or reflector being provided, below the top thereof, with an annular recess 11 for the reseption of the inner ends of said screws.

D lVithin the body of the holder 1 there is mounted a device by which lamps of various sizes are supported and properly positioned with reference to. the shades. This supporting and positioning device comprises a metallic plate having ends by which it may be attached to theholder and a body portion .ofl sctfrom the ends in the direction of the axis of the holder. such otl'sct portion serving to support and position the lamps. The derice is convcnicntlv formed in the manner shown in the drawings. wherein a metallic plate is shown as provided with end flanges 12 adapted to be secured to the wall of the holder 1 above the led 'e 7 b means of screws 13. the ends of the flanges preferably resting upon said ledge and said flanges extending along and in substantial contact with the cylindrical wall of the holder above such ledge. At a suitable distance above the ends of the ledges, the middle of the plate extends inwardlv. or toward the center of the holder, as shhwn at 14. .\t its central portion. thc-plate is offset axiall with respect to the portions 14. such ottset portion being indicated at 15 and extending across the axisof the holder at substantially right angles thereto being connected to the portions 14 by axially extending portions 1h.

In Fig. 1, the holder is shown as supporting a relativeh large shade IOand a relativelvlarge lamp 17, the lamp being of about the; diniensi-onsof a ('10 watttnugsten o'r Mazda lamp, or similarlatnp, and the shadeabcing of the standard sizeordinarilv employed with such lam'p.' This lamp, as is customary with lamps of this capacity, is provided with a skirt base18, from which projects the ordinary threaded base 19. In

-" the same fignre' 'therc are represented in dotted lines the globe 20' of a lamp of still greater capacity, (say 100 watts) and a shade 2]. corresponding to such globe. In order to support; either of these high power lamps in proper position with respect to' their shades. the supporting and positioning device is applied to the holder in-the .man-" ner shown in Fig: 1. In this figure, the offs setportion 15 of ,this device is projected upwardly. 'lo s-utih'. upwardly projecting portion there is secured a porcelain receptacle 22. said recepta'cle being supported by means of s rews 23 extending through slots in lateral lugs 25, carried by the receptacle and through threaded apertures 26 in the said (3 wire. The receptacle 22 s provided with the usual outlet wires 27, which may lead to any convenient switch (not shown). I

In Fig. 2, there is shown identically the same fixture as in Fig. 1, the casing 1 and the other numbered parts beingidentical with the fixture parts correspondingly numbered in the former figure. The lamp 28 and the shade 29 are smaller than the lamp and shade shown in the preceding figure, the shade illustrated being such as used in connection with 25 and 40 watt tungsten or Mazda lamps or similar lamps. Lamps dowmvardly instead of upwardly in the fixture l. -\Vhen so reversed, the flanges 12 are directed upwardh and the surfaces of the inwardly extending portions 14 preferably abut and rest upon the ledge 7, the

of this size are not provided with the skirt screws 13 being applied to retain the supporting and positioning device in place.

"ith the present standard of shades and. lamps, the low capacity or small lamps, such as shown in Fig. 2, must be" supported at "a point from about three quarters to seren-eighths of 'an inch closer to the top of the shade than is the ease with the lamps of higher etlicicncy. owing to the ditlerence in construction of the lamps. such as the ab ence .ot the skirt base 18 in the smaller lamps. 'lhc apertures in the flanges 12 will be located midway of the outer length of said flanges so that the ends of the flanges will abut against the ledge T when the supporting device is usedwith large lamps in the po ition shown in Fig. 1, while the surfaces of the portions 14 which are opposite the ends of said flanges will abut against said ledges whensaiddevice is reversed or applied in the position shown in Fig. 2. The vertical. distance between the centers of the apertures in the flanges 12 and the cen tral portion '15 of the device will be half the ditl'ercnee between the distances at which the upper ends of the large and small lamps are supported above their respective shades.

pettingjoint.and 33 the upper section'of the holder or fixture by which the shade is supported and which contains and supports casing and seated on the the supporting and positioning device. The section 325 is substantially closed at the top and the supporting, and positioning device and the receptacle 22 will be applied to the ledge tit carried by the lower section 30 of the holder. b'uch being the case, the lower section of the holder casing is contracted in diameter, as shown at 37, in comparison with the diameter of the adjacent 11 )per section. The flanges 1-3 will extend t ong the t' \'lll|tlrical lower end of the upper section, with their ends resting on top of the led e 34 (when the sup 'iorting device is in to position shown in Fig. 3). The device will be secured in place by screws 38 extending through the telescoping ends of the upper and lower sections and through the apertures in the llanges 12. in Fig. 3, the parts are shown in the position which they will occupy in connection with a large lamp, namely, with the central portion of the device projected upwardly. \V hen desired to use this fixture in combination with the smaller size lamp, such as shown in Fig. 2, the aforesaid device will be reversed in an obvious manner.

As previously stated, the eonstriu-tions shown herein are designed for use with shades and lamps as they are now standardized. In order to m-conuuodate and adapt my construction for future possible changes that may be made in shade dimensions, I provide. means whereby the desired distribu tion 01 light may be obtained, notwithstand ing such changes. As will a rpear more particularly from Figs. 1, 2, i and 5, the receptacle is provided with a neck 22" which projects through and tits more or less closely an aperture 15" provided in the offset portion 15 of the saddle. or supporting device. This neck '32" is of such length as to accommodate one or more washers 39 between the upper surface of the receptacle and the adj jacent surface of the projection 15. Should it be desirable to vary the position of the lamp with reference to the shade, in addition to the adjustment provided by the reversibility of the supporting a-nd positioning de' vice, such variations .may be.accumphshed by applying to the neck 22 one or more washers or substituting for a washer already thereon another washer varying in thickness therefrom.

In applying the supporting and positioninn device to a fixture as shown in Figs. l and 2. the receptacle will preferably be his tcned to the upwardly or downwardly projecting portion tafe as occasion may require, and the said device and receptacle may. be inserted through the bottom of the fixture, by giving the said device a quarter turn with respect to the position shown in the. drawings, before inserting it into the fixture. It. may then be righted within the fixture I ledge 7, being sei I I cured in place by the screws 13. If the cross bar 3 is not in place, the device may be inserted even more conveniently into the enlarged upper end of the casing. \Vith the style of fixture shown in Fig. 3, the device may be inserted through the open bottom, in the manner described above, but it will be more convenient to separate the upper and lower sections and apply the device directly to the lcd e.

When tlie supporting and positioning device is in place, it is adapted to rest upon the ledge or shoulder 7 or 34. This holds the device from rocking and thereby g 'tting the lamp out of such relatiomto the shade as will intci-derc with the highest illuminative etliciency. This is equally true whether the device be in the position shown in Fi 1 or in the reversed position shown in Fig. 2.

A great advantage of my construction resides in the fact that the supporting and positioning device is interchangeable with the two types of fixtures shown herein, the distance from the ledge of each fixture to its shatic-supporting portion being the same for both types of fixture. It is alsocqually ap )licable to fixtures for shades of varying holder dimensions.

Having thus described my invention, what I qlilim is:

1. The combination of a fixture for supporting, a lamp and shadtasaid fixture having adjacent to one end thereof means by which the shade may be supported and having intermediate of its ends a ledge, and a supporting and positioning device for a lamp reversibly supported adjacent to said lcd 'e and having a portion oti'set longitudinally or axiallv with respect to the casin 2. The combination. with a fixture having means for supporting a lamp shade, of a device. extending across the central portion of said fixture and having a portion offset with respect to the ends thereof in the direction of the axis of said fixture, and means for reversibly supporting said ends in said fixture.

3. The combination. with a fixture having means for supporting a lamp shade, of a device extending, across the central portion of said fixture and having a portion offset, with respect to the ends thereof in the direction of the axis of said fixture, said ends being adapted to extend along the opposed walls of the fixture, and means for securing said ends to said walls. 1

4. Thc.combination. with a fixture having means for supporting a lamp shade, of a positioning device across said fixture and having its central portion olfsct in the direction of the axis of said fixture. and means reversibly supporting said device in said fixture.

5. The combination of a fixture having adjacent to one end thereof supporting adapted to extend" positions of said member and said device 10 may be varied.

In testiniom whereof, I hereunto affix my signature in the presence of two Witnesses.

\VVILLIAM C. HINE.

in at least two positions varying longitudinally with respect to said fixture.

17. The coinbinafion, with a hollow fixture having adjacent one end thereof means for supportin' :1 Iain shade, of a support- Ing devieewit lin saic fixture, a lump-carrying member, means for abutting said member against and securing it to said supportin; derive. uni means whereby the relative Witnesses J. B. HULL, Bnnxmm B. VEST.

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