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Патент USA US2117188

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May 1% 1938-
Filed Oct. 28, 1956
Joseph Mariz‘el am?
Duane ,Zjtlple?
BY W A'ri‘olglzv
m 4 ,
Patented May 10, 1938
Joseph Markel and Duane L. 'Ripley, Buffalo,
N. Y., assignors to Markel Electric Products,
Inc., Buffalo, N. Y., a corporation of New York
Application October 28, 1936, Serial No. 108,046
1 Claim. (Cl. 240-137)
This invention relates to improvements in elec
l6 of the adapter is preferably of a substantially
tric lighting ?xtures of the kind wherein a light greater diameter than the socket 1, whereby to
modifying means is carried by the socket for the provide an annular space I‘! between it and the
lamp. Although not necessarily limited to such said socket. Bayonet slots I8 are formed in
5 use, the features of the invention may be em
the body l6 of the adapter to accommodate op
ployed to advantage in connection with the posed inwardly extending projections l9 which
application of a re?ector, either opaque or trans
lucent, to ?xtures of the wall bracket type.
One object of the invention is a ?xture in
10 which provision is made for facilitating the at
tachment of the light modifying means.
A further object is to provide a construc
tion which will enable the features of the inven
tion to be employed in connection with standard
15 ?xture parts.
A still further object is to provide- a‘novel
design and arrangement of the parts of the ?x
ture, whereby simplicity and economy in con
struction are obtained.
The invention is illustrated in the accompany
ing drawing in which:
Figure l is a perspective View, partially in sec
tion, of a ?xture embodying the features of the
Figure 2 is an enlarged section taken along
line 2-2 of Figure 1.
Figure 3 is a similar section taken along line
3—3 of Figure 1.
Figure 4 is a fragmentary section taken along
30 line 4-4 of Figure 2.
Figure 5 is an enlarged fragmentary section
taken along line 5-5 of Figure 2.
The features of the invention are illustrated,
by Way of example, in connection with a ?x
35 ture of the wall bracket type, the lamp for the
said ?xture being indicated at 6. The socket l
for the lamp is carried by an arm 8 (Figure 1)
which is ?xed to a plate 9, the said plate being
available to mount the ?xture upon a wall or
40 other supporting surface. A re?ector l0 and
a shade H are associated'with the lamp 6, the
said re?ector being carried by the socket 1
and preferably being formed of a translucent
plastic material, whereby to permit a part of
46 the light from the lamp 6 to pass through it.
The shade II is supported by the re?ector and
to this end is formed with an internal bead l2
which rests upon the rim of the re?ector.
The socket l, as illustrated, is of conventional
50 design, being of the type which is provided with
a threaded section 13. In accordance with the
invention the re?ector I0 is mounted upon the
socket by an adapter M, the latter being formed
with a threaded neck l5 which is screwed upon
55 the threaded section I3 of the socket. The body
are formed or provided upon the re?ector Ill,
the said slots being diametrically opposed as
are the projections. An opening 20, which is of
a diameter substantially the same as that of the 10
outside diameter of the body 16 of the adapter,
is formed in the bottom of the re?ector, it being
noted that the projections I9 extend into the
said opening. The body I 6 of the adapter has
a conforming ?t in the opening 20 while the pro
jections l9 extend into the space I‘! and termi
nate short of the socket as best shown in Fig
ure 4.
In assembling the parts of the ?xture, assum
ing that the adapter I4 is screwed into position 20
upon the socket, the re?ector is adjusted so that
the projections l9 will enter the open ends of
the slots I8. When this adjustment is made, the
re?ector is moved to cause the body l6 of the
adapter to enter the opening 2|] until the pro 25
jections l9 encounter the bottoms of the slots
l8. The re?ector is then rotated to cause the
projections to move under the overhanging por
tions 2! which de?ne the lateral extensions of
the slots. Preferably, the said extensions are 30
slightly tapered so that as the projections ap
proach the closed ends thereof they are wedged
tightly between the upper and lower walls.
From the foregoing it will be apparent that
the projections [9 support the weight of the 35
re?ector and hold it against accidental angular
displacement. At the same time the engage
ment of the wall which de?nes the opening 20
with the body of the adapter prevents the re
?ector from rocking on the projections. The 40
re?ector, therefore, is secured tightly to the
The formation of the re?ector from a
plastic material has the advantage that the pos
sibility of injury to the projections I9 is mini
mized. The construction is simple and economi_
cal and enables the use of sockets of standard
design if this is desired. A further advantage
obtained is that the re?ector and associated
parts may be assembled with facility.
What is claimed is:
The combination with a ?xture having a lamp
and a socket for said lamp, said socket having
a threaded section, of a bowl-shaped re?ector for
modifying the light from said lamp, said re
?ector being formed with an opening and having
' 7
projections which extend into said opening and
an adapter for mounting said re?ector upon said
socket, one end of said adapter being reduced
in diameter and being threaded to- co-operate
with the threaded section on said socket, the
other end of said adapter having a relatively close
?t in said opening and being spaced from said
socket, said other end having bayonet slots
formed therein, said projections extending
through said slots and into the space between
said adapter and vsocket to secure the said parts
in co-operating relation.
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