US1759985A - Shade holder - Google Patents

Description

H. LE R. JENKINS 1,759,985

- sHADEHoLDEga l A Filed Jan. 26, 1927 lNvgNToR H15, ATTORNEY Patented May 27, 1930 UNITED STATES PATENT OFFICE HOWARD LE ROY JENKINS, F NEWARK, OHIO, ASSIGNOR TO HOLOPHANECOMPANY, INC., 0F NEW YORK, N. Y., A CORPORATION OF NEW YORK SHADE HOLDER Application led January 26, 1927. Serial No. 163,651.

The present invention relates to shade holders and is more particularly directed toward shade holders designed for directly supporting shades or the like from electric lamp bulbs.l

It is frequently desirable to directly support a shade or screen of glass or other translucent material or an opaque reiiector adjacent to a lamp bulb so as to obtain a beam of 1o light in the desired direct-ion or a desired color. Under many conditions it is also desirable to obtain an asymmetric light beam whose axis may be adjusted to a variety o f angles and which may be turned about this axis to obtain the desired lighting effects.

The present invention contemplates a shade holder directly mounted on the'lamp bulb and capable of permitting a movement of the shade in all directions so that it may be placed in any desired position about-the lamp bulb and the light directed as desired.

The parts are so arranged that the shade whether of disc, lens, or refractor form, may be moved about the lamp bulb in a variety of positions so as to direct 'the axis of the beam in the desired direction irrespective of the zu'xgle of the lamp socket. lrVhere an asymmetric distributingr lens is used, the lens may he turned so that the maximum light distribution is brought into the desired plane.

The accompanying drawings show, for purposes of illustration, two of the many poslsible embodiments in which the invention may take form, it being understood that the drawings are illustrative of the invention rather than limiting the same.

In these drawings:

Figure 1 is a side view of a lamp bulb and shade holder showing the adjustment of the shade and movable shade supporting member in the plane of the longitudinal axis of the lamp;

Figure 2 is an elevational View, with parts in section, taken at right angles to the View of Figure 1 and illustrating the bodily adjustment of the entire shade holder and shade about the longitudinal axis of the lamp.

Figure 3 is a perspectivek view illustrating 50 a shade holder detached -from the lamp bulb);

tral portion of the wire is bent into a substantially closed loopor ring 10 While the end portions of the wire are bent into arcuate loops 11 and 12. These loops 11 and 12 are preferably circular and of the proper radius of curvature to fitthe lamp bulbwith which they are tov be used. They are normally disposed so as to be parallel with one another and in planes at substantially right angles to the plane of the loop 10.y A slidable shade supporting carriage 13 bridges across loops 11 and 12. As here shown, this carriage takes the form of a metal strap 14 having hook' shaped ends 15 and 16 adapted to embrace the wire members 11 and 12. The central part of the bridging member is provided with an internally threaded boss 17 as indicated to receive a shade fastening screw 18.

The shade, indicated at 19, may be of any desired shape and material. It may be turned about its axis on the boss 17 and clamped in any desir'ed position by means of the screw 18. This screw preferably does not extend through the boss 17 and is thereby held out of engagement with the lamp bulb.

When it is desired to place the shade support on the lamp bulb, the bridging member 13 is moved from the full line position as indicated in Figure 1 down toward the lower part of the shade support as indicated in this figure. This permits members 11 and 12 to be spread apart. One then passes the lamp base 1n between these loops and through the ring 10 bringing .the lamp bulb to the position of Figure 1. The neck of the bulb iseneircled by the ring 10 while loops 11 and 12 close in on the large end of the bulb.

In order to bind the shade holder on the bulb, a cross connection such as a s ring or clip 1s provided at the ends of the oop 10. As here shown, a coiled spring 21 is hooked onto the wires 1l and 12. This spring acts to compress'the loop 10 andv pulls the entire shade holder toward the neck of the bulb thereby tending to make the Wire members 11 and 12 spread apart. This spreading is resisted by the bridging member which is therefore held more securely by the increased friction. When this cross connection is released or the spring 21 is expanded, the shade supporting bridging member may be slid along the Wire members 11 and 12 as indicated in Figure 1 so as to move the shade 18 along the plane of the Vaxis of the bulb. The shade holder and shade may also be bodily turned about the axis of the lamp, as indicated in Figure 2. When the shade is in place on the holder, the bridging member cannot slide oil' the ends of the Wire on account of engagement of the shade with the lamp base (or socket) as indicated in dotted lines on the upper side of Figure 1.-

The form of the invention shown in Fi gure 4, utilizes a split ring 25 adapted to encircle the neck of the lamp bulb, a pair of parallel track members 26 and 27 adapted to extend about the bulb, and a clamping screw 28 for clamping the shade holder on the bulb. This form of device may be provided with a bridging member 13 and shade fastening screw 18 such as shown in Figures 1, 2 and 3. In some cases it is desirable to provide a second slider 29 to prevent excessive spreading of the Wire loops 26 and 27.

Where one desires an asymmetric distribution of light in the emitted beam, a refracting cup such as shown in Figures 1, 5a and 5b, may be used. Such a refractor may have a series of circular collecting prisms 30 on one side and parallel refracting prisms 31 for concentrating the beam collected by the prisms 30. Turning the refractor from the position of Figure5a to the position of Figure 5b, will vary the light distribution in the desired manner. The retractor is more particularlly7 described in application SerialNumber 701,970, iiled March 26, 1924.

The holder here described is Well adapted for adjustment of shades. particularly of the form shown, in cove lighting, in ioor and table lamp lighting Where it is desired to screen the lamp bulb from the reader and at the same time direct the light rays in useful directions, and inexisting installations Where one does not Wish to modify the entire installation.

What is claimed is:

1. In combination, an electric lamp bulb, a shade holder having a portion encircling the small diameter neck portion of the bulb, a pair of members extending about the bulb in a longitudinal direction, ashade supporting member slidably carried on thel pair of members, means for tightening the shade holder onto the bulb to prevent slipping of the shade supporting member, and a shade on the shade supporting member.

The combination with a shade support having two spaced members in close contact with the lamp bulb and in planes substantially parallel with the axis of the bulb, a shade, and a shade supporting member carried on the two members and slidable therealong to place the shade at various angles, and a device for tightening the members onto the lamp bulb to prevent slipping of the shade supporting member.

3. In combination, a lamp bulb, an asymmetric refracting cup, means for supporting the cup directly from the lamp. bulb, said means being movable about the axis of the bulb and supporting the cup so that it may be adjusted longitudinally of the axis of the bulb and turned about its own axis, and means to clamp the cup supporting means onto `the bulb to prevent slipping thereof.

4. The combination with a lamp bulb and an asymmetric retracting cup, of a pivotal mounting for the cup so that it can be rotated on its ovvn axis, a pair of members lying close to` the lamp bulb and extending longitudinally thereof, said mounting means being slidably carried on said pair ot' members, and a support for said members, said support encircling the smaller diameter portion of the I bulb. 4

5. A bulb supported shade holder having a pair of resilient track members disposed pa r allel vvith the axis of the lamp bulb, a shade carriage slidably supported on the track members, and means to so bind the members against the bulb that slipping of the shade carriage is prevented.

6. In a shade holder a length of Wire Whose end portions are bent into flat substantially parallel open loops and Whose central portion is bent into an open loop in a plane at substantially right angles to the first mentioned loops, which loops are capable of being spread to permit passing the base of a lamp bulb through the second loop, the first mentioned loops thereupon springing against the bulb to hold the shade holder on the bulb.

7. In a shade holder a length of Wire whose end portions are bent into flat substantially parallel open loops and Whose central portion is bent 4into an open loop in a plane at substatially right angles to the iirst menlamp bulb through the second loop, the first mentioned loops thereupon springing against the bulb to hold the shade holder on the bulb, and a shade supporting bridging member slidable along the parallel loops.

8. In a shade holder a length of Wire whose end portions are bent into flat substantially parallel open loops and Whose central portion is bent into an open loop in a plane at substantially right angles to the first mentioned loops, which loops are capable of being spread to permit passing the base of a lamp bulb through the second loops, the first mentioned loops thereupon springing against the bulb to hold the shade holder on the bulb, and a shade supporting bridging member s1dable along the parallel loops, the shade engaging the lamp base to prevent the bridgng member from sliding olf the ends of the oops.

Signed at Newark, in the county of Licking and7State of Ohio, this 17th day of January, 192

HOWARD LE ROY J ENKINS.

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