US2200611A - Lighting fixture - Google Patents

Description

Ma 14, 1940. v w, WILSON 2.200.611

LIGHTING FIXTURE Filed'July 29, 1937 v, lllllliln Patented May 14, 1940 new PATENT OFFICE,

LIGHTING FIXTURE Wesley Wilson,

Lighting Inc, Chicago,

Illinois Chicago, 11]., assignor to Wilson 111., a corporation of Application July 29, 1937, Serial No. 156,274

1 Claim.

My invention relates to lighting fixtures.

One of the objects of my invention is to provide an improved reflector having a supporting flange portion lying in a plane at an oblique angle with respect to the axis of the reflector, the flange portion being formed integrally with the reflector portion.

A further object of my invention is to provide an improved method for forming such a reflector.

A further object of my invention is to provide such a construction in which the reflector and flange portion may be originally formed as surfaces of revolution so thatthe initial formation may be made by a spinning process.

Further objects and advantages of the invem tion will be apparent from the description and claim.

In the drawing, in which several embodiments of my invention are shown,-

Figure 1 is a side elevation showing a reflector before the flange portion has been de formed to give a tilt to the reflector;

Fig. 2 is an axial sectional view showing one method of deforming the flange to give a tilt to the reflector;

Fig. 3 is a section on the line 3-3 of Fig. 2 showing the reflector mounted;

Fig. 4 is an axial sectional view showing another iorm of reflector having a supporting flange portion lying in a plane oblique to the axis of the reflector;

Fig. 5 is a section on the line 5-5 of Fig. 4;

Fig. 6 is an axial sectional view showing another form of reflector;

Fig. '7 is a side elevational view showing a reflector with the supporting flange prior to deformation to secure the tilting of the reflector; and

Fig. 8 is an axial sectional View showing one method of deforming the flange of Fig. '7 to secure the tilting efiect.

Referring to the drawing in detail, and first to Figs. 1 to 3, inclusive, the construction shown therein comprises a reflector I having a neck portion 2 to receive the neck of a lamp bulb and having a supporting flange portion 3 formed integrally with the reflector portion. Fig. 1 .hows the reflector and flange prior to deformation of the flange. The structure shown in Fig. 1 may be formed by a spinning operation, as the parts shown are all surfaces of revolution about the axis of the reflector. In order to deform the flange 3, a tool and die construction may be used (as shown in Fig. 2), the tool member 4 having its lower edge inclined so as to press downwardly an annular portion 5 of the sheet metal adjacent the juncture of the reflector portion I with the flange portion 3. The action is such that the line of juncture between the reflector portion and flange portion will finally lie in a plane nonparallel to and intersecting the plane of the outer edge of the flange so that when the reflector is installed in an opening 5a in the ceiling or the like, the axis of the reflector will be at an oblique angle to the plane of the supporting edge of the flange portion 3. The terraced formation of the flange 3 lends itself readily to this distorting action.

In Figs. 4 and 5, the distortion to secure the desired tilting of the lamp is efiected by deforming the terraced annular shoulder portion 6 be tween the neck 2 of the reflector and the reflector proper I. The fixture may be formed in the first step of the forming process by a spinning process so that the shoulder connection portion t between the neck portion 2 and the reflector portion I will have a terrace-like formation which can be readily deformed so as to secure the desired tilt of the reflector portion with respect to the lamp supported by the neck portion. This deforming action may be eflected by a suitable tool I having annular edges 8 and 9 for engaging the terrace-like connection portion 6.

In Fig. 6 is shown a construction in which the connection I between the reflector portion I and the annular lamp supporting portion II in general may be crescent-shaped, the outer edge I2 of the crescent-like connecting portion lying in one plane, and the inner edge I3 of the crescent-like portion lying in another plane which intersects the first plane substantially at the point I.

In Figs. 7 and 8 is shown a different method of forming the supporting flange. In this form the reflector I and flange may be first formed as shown in Fig. '7 so as to provide a substantially flat, outwardly-extending annular flange I which may be susbequently drawn or formed to the shape shown in Fig. 8. In this drawing process, the flange I5 may be held between spring-pressed members It and II, the spring pressure on the right-hand side being considerably greater than the spring pressure on the left-hand side so that when the tool I8 is forced downwardly, the right-hand edge of the flange I5 will be firmly held while the left-hand edge will be drawn out from between the two gripping members I6 and II, flowing down over the corner I9 of the lower gripping member, thus, in efiect, increasing the A sheet metal reflector comprising a concave reflector portion shaped as a surface of revolution and a circularly corrugated laterally extending supporting flange portion integral with said reflector portion and extending from the periphery thereof, shaped as a distorted surface of revolution, the different circular elements of said distorted surface of revolution lying in different nonparallel planes intersecting the reflecting surface of revolution.

WESLEY WILSON.

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