US2128470A

US2128470A - Lighting device

Info

Publication number: US2128470A
Application number: US122491A
Authority: US
Inventors: Paul D Phillips
Original assignee: BENJAMIN ELECTRIC Manufacturing CO
Current assignee: Benjamin Electric Manufacturing Co
Priority date: 1937-01-27
Filing date: 1937-01-27
Publication date: 1938-08-30
Anticipated expiration: 1955-08-30

Description

Aug. '30, 193.8. v P D. pHlLLgpg 2,128,470

LIGHTING DEVICE Filed Jan. 27, 1937 Q N INVENTOR fmfcz/ .5. BY W,%,@ .L

ATTORNEY? r Patented Aug. 30, 1938 UNITED STATES ZJY@ LIGHTING DEVICE Paul D. Phillips, Elmhurst, Ill., assigner to Benjamin Electric Mfg. Company, Des Plaines, Ill., a corporation of Illinois Application January 27, 1937, Serial No. 122,491

4 Claims.

This invention relates to improvements in lighting devices, and particularly to a device adapted for application to a lighting xture designed tol afford general illumination over a space of considerable area, for the purpose of intercepting a portion of the light output from the lamp and concentrating it and redirecting it to some desired point or upon some desired object and thus increasing the intensity of the illumination on such point or object.

In an application filed by John H. Waterbury October 12, 1935, Serial No. 44,689; the inventor discloses several forms of a lighting construction which includes, in addition to the main fixture reflector and the lamp, an auxiliary reflector located within the main reflector, and means for supporting the auxiliary reector, the supporting means being so constructed and arranged that the auxiliary reflector may be tilted to vary its angular relation to the axis of the main reflector and lamp, and also to permit the auxiliary reflector to be moved to any position around this axis without changing its angular relation thereto.

My invention relates to improvements in the mounting of the beam projector reflector which forms a part of each of the constructions shown in the prior application referred to, one of the objects of the invention being to provide a device which is sturdy and not likely to get out of 30 adjustment. Another object is to improve the appearance of the device.l Further objects and advantages of the invention will be apparent from the description, and the claims.

In the accompanying drawing,

Figure 1 is an axial sectional view of a lighting xture fitted with my improved beam projector, and

Fig. 2 is a fragmentary sectional view, the section being taken on line 2-2 of Fig. l.

Referring to the drawing in detail, the main lighting unit or fixture comprises a bowl-shaped reflector 5, a socket 6 for supporting the lamp 'I with its light center 8 on the axis of the reflector 5, and a nut 9 threaded on the conduit for clamping the flange of the reflector 5 in position with respect to the socket 6. The upper portion I0 of the reector forms a hood to enclose the socket 5 and the upper part of the lamp. The lower edge of the reflector is rolled to form a stiffening bead I I for holding the rim of the reflector to its annular form. This type of lighting fixture is in general use and is designed to light a considerable area below it substantially uniformly.

The beam projector comprises a small, prefer- 55 ably concave, auxiliary beam-projecting reflector I2 and means for mounting the latter on the fixture reflector and adjustably holding it in position between the lamp and the inner surface of the xture reflector. The mounting means includes a bar I3 to which the reflector I2 is 5 secured by suitable means such as the rivet I2ia, this bar being pivotally connected at its upper end to an upwardly extending arm` M of a generally L-shaped bracket or supporting member I5. This bracket I5 has another arm Iii which is 10 curved in an arc having the pivot Il, on which the bar I3 swings, for its center.

Member I5 is preferably a casting of lightweight metal such as aluminum. In addition to arms I4 and I6 the bracket has a downwardly 15' extending portion I8 which, when the device is in place on .a fixture reflector, extends slightly below the rim of the latter. To this extension IB is hinged, at I9, a clamping member 2d, which also is a light-weight'casting. Clamping mem- 20 ber extends up on the outer side of the fixture reflector and hooks over the rim bead II of of the latter and is thus prevented from slipping down and becoming separated from the reector. The clamping member also extends up into theV fixture reector a short distance and carries a thumb set-screw 2I which, when turned in, engages the downward extension I8 of the bracket I5 and forces the bracket toward the inner surface of the fixture reflector. The reflector is thus firmly clamped between the bracket and theclamping member. A strip 22 of felt or other suitable material is secured, by the use of cement or other suitable means, to the part of the bracket which is pressed toward the reflector, to prevent injury to the enamel of the latter, and a strip 23 of similar material is secured to the inner side of the upwardly extending portion of clamping member 2U.

The lower end of pivoted auxiliary-reflector- 4e supporting member I3 is bifurcated and straddles the curved arm it of the bracket I5. A thumb set-screw 2li is threaded through one of the legs of this clevis-like part of the pivoted supporting arm I3, and, when screwed in against [i5 arm I6, securely locks the swinging arml and the beam-projecting reflector against movement about the pivot I'I.

It will be seen that the beam projector may be positioned at any desired point around the axis of the fixture reector and lamp, and that this position may be changed by merely loosening thumb-screw 2l slightly and sliding the bracket and clamp around on the reflector bead Il.

The beam-projecting reflector is preferably concave and polished or etched on its inner side. It will be seen that after thumb-screw 24 has been loosened the direction in which the beam is projected can be adjusted in a plane parallel to the axis of the lamp and fixture reflector, that is, the beam can be swung in a vertical plane when the fixture is` installed so as to light a space below it, as is usually the case.

Further modifications will be apparent to those skilled in the art and it is desired, therefore, that the invention be limited only by the prior art and the scope of the appended claims.

Having thus described my invention, what I claim and desire toI secure by Letters Patent is:

l. A beam projector for use with a lighting fixture having a bowl-shaped reflector and a lamp, said beam projector comprising an auxiliary reector and means for adjustably mounting the same within the fixture reflector between the latter and the lamp, said mounting means comprising a bracket member, a clamping member hinged to said bracket member and adapted to clamp the fixture reflector between itself and the bracket member with the bracket member inside the fixture reector, said bracket member having an arm extending toward the axis of the lamp and fixture reflector, a third member carrying the auxiliary reiiector and pivotally supported by said arm so that it may be swung in a plane parallel to the axis of the fixture reflector to vary the position of the auxiliary reliector and consequently the direction of projection of the beam, and means for locking said third member to the bracket member to hold it and the auxiliary reflector in adjusted position.

2. A beam projector for use with a lighting lixture having a bowl-shaped reflector and a lamp, said beam projector comprising an auxiliary reflector and means for adjustably mounting the same within the fixture reflector between the latter and the lamp, said mounting means comprising a bracket member, a clamping member hinged to said bracket member and adapted to clamp the fixture reflector between itself and the bracket member, said bracket member having an arm extending intothe fixture reflector and toward the axis thereof, a third member carrying the auxiliary reflector `and pivotally supported by said arm so that it may be swung to vary the position of the auxiliary reiiector relative to the lamp and consequently the direction of projection of the beam, the bracket member having another arm, and means for locking said third member to said other arm to hold said third member and the auxiliary reflector in adjusted position.

3. A lighting construction comprising a hood, an annular downwardly opening bowl-like reflector secured to and depending from said hood, a lamp socket in said hood for supporting an electric lamp so that it extends downwardly from the hood and into the reflector, said annular reflector having its lower annular edge lying substantially in a plane perpendicular to the axis of the lamp, and an auxiliary refiector mounted so that the major portion of it lies between the inner surface of the annular reflector and the axisof the lamp` for directing a beam of light laterally toward the axis `of the lamp and underneath the lower annular edge of the annular reflector, said auxiliary reflector being mounted for swivel adjustment about the axis of the lamp whereby the lateral light may be intensified in the desired radial direction, and said auxiliary reflector being adjustable to vary the vertical angl-e of inclination of the beam therefrom, said mounting means comprising a bracket having clamping means embracing the lower edge of said annular reector for securing it to said lower annular edge in various adjusted positions about the axis of the lamp, said bracket having an arm extending upwardly from said annular edge and inwardly toward the axis of the lamp, said auxiliary reector being pivotally mounted adjacent its upper edge and adjacent the upperend of said arm to vary the Vertical angle of inclination of the reflected beam.

4. A lighting construction comprising a hood, an annular downwardly opening bowl-like relector secured to and depending from said hood, a lamp socket in said hood for supporting an electric lamp so that it extends downwardly from the hood andA into the reflector, said annular reector having its lower annular edge lying substantially in a plane perpendicular to the axis of the lamp, and an auxiliary reector mounted so that the major portion of it lies between the inner surface of the annular reiiector and the axis of the lamp forI directing a beam of light laterally toward the'axis of the lamp and underneath the lower annular edge of the annular refiector, said auxiliary reflector being mounted for swivel adjustment about the axis of the lamp whereby the lateral light may be intensified in the desired radial direction, and said auxiliary reflector being adjustable to vary the vertical angle of inclination of the beam therefrom, said mounting means comprising a bracket having clamping means embracing the lower edge of said annular reflector for securing it to said lower annular edge in various adjusted positions about the axis of the lamp, said bracket having an arm extending upwardly from said annular edge and inwardly toward the axis of the lamp, said auxiliary reector being pivotally mounted adjacent its upper'edge and adjacent the upper end of said arm to vary the vertical angle of inclination of i the reflected beam, and means for securing said auxiliary reflector in various positions of adjustment about said pivotal mounting.

PAUL D. PHILLIPS.