US2673927A

US2673927A - Lampshade adapter

Info

Publication number: US2673927A
Application number: US150093A
Authority: US
Inventors: Sherbinin William N De
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-03-16
Filing date: 1950-03-16
Publication date: 1954-03-30
Anticipated expiration: 1971-03-30

Description

. 1954 w. N. DE sHl-:RBlNlN March 30 LAMPSHADE ADAPTER 2 sheets-sheet `1 Filed March 16. 1950 Gtomeg March 30. 1954 w.N. DE SHERBININ 2,573,927

' LAMPSHADE ADAPTER Filed March 1e. 195o 2 sheets-shew 2 w74 e 22 2?-- 23 25 Z9 /l A l /7 33 Patented Mar. 30, 1954 UNITED STATESv PATENT OFFICE This invention relates to electric lighting fixtures and more particularly pertains to lamps of the type having a shade which is attached to and supported on the electric light bulb .of the lamp.

Heretofore, in lamps of the type referred to, the shade has been supported on the bulb by an adapter which is assembled from a plurality of separate pieces. For example, the bulb engaging portion would be in several pieces and the shade engaging parts would be separately produced, and all the pieces would be secured together to form the adapter. This is time consuming, complicated and expensive.

The present invention overcomes these disadvantages and provides an adapter for securing a lamp shade to an electric light bulb which is made in one piece and yet adequately performs all the functions of the previous multi-piece type.

The invention will be understood from the following description when considered in connection with the accompanying drawings forming a part thereof, and in which:

Fig. 1 is a perspective view of an adapter embodying the invention, shown supporting a table type lamp shade on an electric lamp bulb;

Fig. 2 is another perspective view of the adapter, mounted on the bulb but unattached.

to a lamp shade;

Fig. 3 is a vertical sectional view showing the adapter supporting a bridge type lamp shade on an electric light bulb;

Fig. 4 is a vertical sectional view showing another form of the adapter supporting a plastic shade on an electric light bulb;

Fig. 5 is a perspective View of a further form of adapter embodying the invention;

Fig. 6 is a vertical sectional view on line 6 6 of Fig. 5, and

Fig. '7 is a view in elevation, on an enlarged scale, showing the manner in which the shade engaging portion of the form of the adapter shown in Figs. 5 and 6, is formed.

Like characters of reference designate the same or similar parts throughout the several views.

Referring to Figs. l to 3 of the drawings, reference character I0 designates an electric light bulb mounted in a socket I I which is secured to The adapter comprises a bulb engaging portion and a shade engaging portion, which, in the form shown in Figs. 1 to 3, specically engages the annulus I5. As shown, the adapter is made from a single length of wire of sufficient rigidity to retain its shape and of suicient resiliency to cause it to spring back into position when moved out of position. The bulb engaging portion consists of two loops I'I and I8 which engage opposite portions of the bulb Il! and which are connected by a part of the wire I9 running across the top of the bulb. The outer end of the loop I'! continues upwardly at 20 to a point 2| approximately above the top of the bulb where it is bent at a sharp angle and extends upwardly and outwardly at 22 to the annulus engaging portion. In like manner, the outer end of the loop I8 continues upwardly at 23 to a point 24 where it is bent at a sharp angle and extends upwardly and outwardly at 25 to the annulus engaging portion. The

parts

22 and 25 are reversed with respect to each other as compared with the

parts

20 and 23 with the result that the angles at the points 2| and 24 engage each other and limit the movement apart of the two annulus engaging portions at the upper ends of the

parts

22 and 25.

The annulus engaging portion on the part 22 comprises an extension of that part which is bent into the form of a rectangle 26 and then extends upwardly at 2l and outwardly at 28. Similarly. the extension of part 25 is bent into a rectangle 29 and then extends upwardly at 30 and outwardly at 3|. The lower surface of the annulus I5 rests on the

rectangular portions

26 and 29, the upwardly extending portions 2l and 3B engage the inner circumference of the annulus, and the outwardly extending portions 28 and 3l assist in the action of gripping the annulus and prevent the accidental disengagement of the adapter.

To mount the shade I3 on the bulb I0, the loops I1 and I8 are spread apart suiciently to permit the bulb to be inserted between them, by moving the bulb upwardly toward the part I9 of the wire which runs across the top of the bulb, or by moving the adapter downwardly on the bulb until part I9 is in contact with the top of the bulb. The annulus engaging portions are then moved toward each other until the upwardly extending portions 28 and 3B can be inserted in the aperture of the annulus as shown in Figs. 1 and 2, after which the adapter is released and the

portions

28 and 39 will spring apart and will engage the inner wall of the annulus and then the shade will be mounted on the bulb. If desired, the adapter can be attached rst to the annulus I5 in the manner described, after which the adapter will be mounted on the bulb l as described.

In Fig. 3, the shade I3 is attached by rods I6 to a bridge type xture which comprises an annulus 32 with the inner circumferential wall threaded. The adapter is applied to this type of shade in the same manner it is applied to the table type shade of Figs. 1 and 2.

In Fig. 4 the plastic shade 33 has an inwardly projecting flange 34 at its upper end which constitutes in effect an annulus similar to the annuli I5 and 32. The adapter is the same as the adapter shown in Figs. 1 to 3 excepting that the

parts

22 and 25 extend outwardly in `diametrically opposite ldirections as shown, which causes the top of the shade to be closer to the top of the bulb than in Figs. 1 to 3, and with the further exception that the ends 28 and 3| of the Wire are approximately parallel to the

rectangular base lportions

26 and 29 and are spaced therefrom at a distance such that the flange 34 will t fairly snugly but detachably into the spaces between them. The adapter is 'applied to the shade and bulb in the manner previously described.

The adapter shown in Figs. 5, 6 and 7 is like the adapters shown in Figs. 1 to 4, excepting for the annulus engaging portions which receive the flange 35 of the plastic shade 36. As shown, the outer end portions of the

parts

22 and 25 are flattened, the intermediate part 3l' of the flattened portion is bent upon the inner flattened part 38, and the outer ilattened part 39 is reversely bent to provide with theV part 31 a recess 40 to receive snugly but detachably the ange 35 of the shade 36. The adapter is applied to the shade and bulbI in the manner previously described.

It will be understood that preferred forms of the invention have been selected for illustration and description and changes can be ma'de in the form of the several parts of the adapter disclosed without departing from the principles of the invention. Accordingly, the invention is not to be limited excepting by the scope of the appended claims.

What is claimed is:

1. An adapter made from wire for securing a lamp shade to an electric light bulb comprising a spiral central portion, the spiral including substantially two loops, the bulb being received between the loops, the spiral having end portions which extend tangentially from the spiral and toward each other so as to cross one another, a bend in each end portion at the point of crossing, each bend partially encircling the other end portion, and shade engaging means carried at the free ends of said end portions.

2. rIlhe combination defined in claim 1 in which the shade engaging means comprises a portion of each free end bent back on itself and a, U-bend formed in the bent back portion.

3. The combination defined in claim 1 in which said shade engaging means comprises a rectangular loop formed in each of said free errds and a projection normal to the plane of said rectangular loop formed by making a right angle bend in the outer end of said Wire.

WILLIAM N. DE SHERBININ.