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Патент USA US2117758

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May 17, 1938‘
-
H. A. DOUGLAS
2,117,758
ELECTRIC LIGHTING DEVICE‘
Filed. April 4, ‘1936
9 Shéets-Sheet l
Hen-1'13 A. INVIJNTOR
Douglas
Bx? JMWWZ/W
ATTOR NEYS
‘May 17, 1938.
H. A. DOUGLAS’
2,117,758
ELECTRIC LIGHTING DEVICE‘
Filed April 4, 1936
‘
9 Sheets—Sheet 2
H0413 A- INVENTOR
DOW-51.”
ATTORNEYS
May 17, 1938.
H, A_ DOUGLAS
2,117,758
ELECTRIC LIGHTING DEVICE
Filed April 4, 1936 ~
’
'
9 Sheets-Sheet 3
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Haws A. luvs»: TOR
ATTOR NE‘fS
May 17, 1938-
H. A. DOUGLAS
2,117,758
ELECTRIC LIGHTING DEVICE
Filed April 4, 1936
9 Sheets-Sheet 4
Hans A- luvzNToR
"Douglas
BYZ/MWJMMWW
May 17, 1933-
H. A. DOUGLAS
2,117,758
ELECTRIC LIGHTING DEVICE
Filed April 4, 1936
'
9 Shéets-Sheet 5- '
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Douglas
Hart-5 A. luvzvrroR
ATTORNEYS
my 17, 1938.‘
H. A. DOUGLAS
2,117,758
ELECTRIC LIGHTING DEVICE -
Filed April 4, 1936
9 Sheets-Sheet 6
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H. A. DOUGLAS
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2,117,758
ELECTRIC LIGHTING DEVICE
Filed April 4, 1936"
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May 17,‘ 1938.
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H. ‘\A. DOUGLAé
‘2,117,758
V ELECTRYIC LIGHTING DEVICE
Filed April 4, 1956
9 Sheets-Sheet 8
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ATTORNEYI‘:
May 17, 1938.
H. A. DOUGLAS
’
2,117,758
ELECTRIC LIGHTING DEVICE
I
Filed April 4, 1936
9 She'ets-Sheet 9
Huh-'3 A. INVLN
Dec: 0R
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1”? BYZMAMMMMW
ATTORNEYS
Patented May 17, 1938
2,117,758
UNITED STATES PATENT OFFICE
2,117,768
_
I
ELECTRIC LIGHTING DEVICE
Harry A. Douglas, Bronson, Mich, assignor to
Kingston Products Corporation, a corporation
of Indiana
Application April 4, 1936, Serial No. 72,775
9 Claims.
My invention relates to electric lighting de
vices, and more particularly to electric lamp units
comprising an incandescent electric lamp mount
ed in a re?ector, as for example, in an automo
5 bile headlight, and the principal object of my in
vention is to‘provide a new and improved light
ing device and unit of this type.
In the drawings accompanying this speci?ca
tion, and forming part of this application, I have
10 shown, for purposes of illustration several forms
which my invention may assume.
drawings:
In these
_
Figure 1 is a vertical sectional view, certain
parts being fragmentarily shown, of one embodi
15 ment of my invention,
Figure 2 is a plan view of some of the parts,
shown in Figure 1, before they are completely
assembled,
.
.
Figure 3 is a fragmentary developmental de
20 tall view, on a smaller scale,
'
,or socket unit, forming part of the embodiment
1
Figure 5 is a side elevation of the holding
25 means shown in Figure 4,
Figure 6 is a section taken along the line 6-6
of Figure '7, looking in the direction‘ of the ar
rows.
Figure ‘7 is a side elevation of a lamp and hold
30 ing means, assembled, the lamp being fragmen
tarily shown,
the arrows,
Figure 19 is a side elevation of a lamp and
holding means, assembled, the lamp being frag- 10
mentarily shown,
Figure 20 is a fragmentary front elevation of a
mounting or re?ector forming part of the em
bodiment in Figure 13,
Figure 21 is a section taken along the line 15
2I-2l of Figure 13, looking in the direction of
the arrows,
‘
Figure 22 is a perspective rear view of the
mounting or re?ector of the embodiment of Fig
_
Figure 23 is a fragmentary sectional view taken
along the line 23-23 of Figure 21,
Figure 24 is a side elevation, on a larger scale,
of a detail forming part of ‘the embodiment of
‘Figure 13, before assembly in that embodiment, 25
Figure 25 is a vertical sectional view, ‘certain
parts being fragmentarily shown, of another em
bodiment of my invention,
> Figure 26 is a front elevation of a detail form
ing part of the embodiment of Figure 25,
forming part of the embodiment of Figure 25,
on a smaller scale,
Figure 9 is a fragmentary rear elevation of a
mounting, or re?ector, which is used in the em
means or socket unit forming part of the em-‘35
bodiment of Figure 25,
Figure 29 is a side elevation of the holding
means shown in Figure 28,
Figure 10 is a section taken on the line Ill-ll)
of Figure 1, looking in the direction of the ar
40 rows,
Figure 11 is a fragmentary sectional view taken
on the line H-Il of Figure 10, looking in the
direction of the arrows,
‘
Figure 12 is a fragmentary sectional view taken
45 on the line IZ-l2 ‘of Figure 10, looking in the
direction of the arrows,
Figure 13 is a vertical sectional view, certain
parts being fragmentarily shown, of another em
bodiment of my invention,
50
Figure 18 is a section taken along the line
l8-l8 of Figure 19, looking in the direction of
the line 6-6 of Figure 7, the holding means
shown in the latter ?gure being omitted,
bodiment of Figure 1,
'
Figure '17 is a front elevation, partly in trans
verse section, of the electric lamp forming part
of the embodiment of Figure 13,
Figure 27 is a developmental view of a detail
’
Figure 8 is a sectional view of a lamp, taken on
35
Figure 16 is a front elevation of a detail part
of the vembodiment of Figure 13,
ure 13,
Figure 4 is a front. elevation of a holding means
shown in Figure 1,
(Cl. 240-41)
‘
Figure 14 is a front elevation of a holding
means or socket unit forming part of‘ the em
bodiment shown in Figure 13,
Figure 15 is a side elevation of the holding
a means shown in Figure 14,
'
Figure 28 is a front elevation of a holding
Figure 30 is a sectional view taken along the
line 30-30 of Figure 31, looking in the direction
of the arrows,
Figure 31 is a side elevation of a lamp and hold
40
ing means, assembled, the lamp being fragmen
tarily shown,
Figure 32 is a fragmentary front elevation of
a mounting or re?ector forming part of the em
bodiment of Figure 25,
Figure 33 is a. section taken along the line
33-33 of Figure 25, looking in the direction of
the arrows,
Figure 34 is a fragmentary sectional view tak
en along the line 34-34 of Figure 33, on an en
larged scale,
50
,
Figure 35 is a side elevation, on an enlarged
scale, of a detail forming part or the embodi- 55
2,117,753
2
ment of Figure 25, before assembly in that em
bodiment,
seamless and formed of sheet metal. The shell 50
is in this instance provided with a plurality of
Figure 36 is a vertical sectional view, certain
parts being fragmentarily shown, of another em
FA bodiment of my invention,
Figure 37 is a side elevation, partly fragmen
integral connector portions 5|, 52, 53, unequally
spaced circumferentially, extending in a direc—
tion generally parallel to the axis of the holding III
means 49. Each of the connector portions 5|, 52,
tary, of a lamp and holding means, used in Fig
ure 36, assembled,
Figure 38 is a front elevation of the holding
10 means used in Figure 36,
Figure 39 is a vertical sectional view, certain
parts being fragmentarily shown, of another em
bodiment of my invention,
Figure 40 is a side elevation, partly fragmen
tary, of a lamp and holding means, used in Fig
ure 39, assembled,
Figure 41 is a front elevation of the holding
means used in Figure 39,
Figure 42 is a vertical sectional view, certain
parts being fragmentarily shown, of another em
20
bodiment of my invention,
Figure 43 is a side elevation, partly fragmen
tary, of a lamp and holding means, used in Fig
ure 42, assembled,
-
Figure 44 is a front elevation of the holding
means used in Figure 42,
Figure 45 is a section taken on the line 45—45
of Figure 42, looking in the direction of the ar
25
rows,
30
Figure 46 is a fragmentary section taken on the
line 46-46 of Figure 45, looking in the direction
of the arrows,
Figure 4'7 is a vertical sectional view, certain
parts being fragmentarily shown, of another em
bodiment of my invention,
Figure 48 is a side elevation, partly fragmen
tary, of a lamp and holding means, used in Fig
ure 47, assembled,
Figure 49 is a front elevation of the holding
40 means used in Figure 47,
Figure 50 is a front elevation, partly in trans
verse section, of the lamp used in Figure 4'7,
Figure 51 is a section taken on the line 5l—5l
of Figure 47, looking in the direction of the ar
rows, and
_
'
Figure 52 is a fragmentary section taken on the
line 52-52 of Figure 51, looking in the direction
of the arrows.
Referring to Figure 1, the embodiment of my
50 invention here illustrated is shown as including
an incandescent electric lamp 40, adapted to be
suitably connected to a mounting 4|, the mount
ing being in this instance a re?ector fragmen
.tarily shown. The lamp 40 is provided with a
55 base 42, which in this instance includes laterally
extending positioning means 43 also forming part
of the means for connecting the lamp to the re
?ector. The base 42 includes a shell 44, and the
laterally extending portion of the base comprises
60 a collar 45 surrounding the shell 44, and a radial
53 is similarly formed and therefore a detailed
description of one of them will serve for all. The
connector portion 52, for example,icomprises an
axially extending bar 54 here shown as having
parallel edges, the bar merging with a hook, the
throat 55 of which is narrower than the circum
ferential width of the bar 54. The upper margin,
56, as viewed in Figure 2, of the throat 55 of the
hook, where it merges with the bar 54, forms an
axial extension of the upper margin of the bar,
whereas the lower margin, 51, of the throat of
the hook intersects a shoulder 58 formed at the
end of the bar, the throat 55 of the hook being
narrower than the bar 54. The hook has a mouth, 20
the bottom sides of which are de?ned by con
verging lines 59, 60, forming a generally V
shaped recess, the bottom of which may be round
ed off, as indicated. The end of the throat por
tion 55 of the hook may be beveled oil’, forming 25
a beveled margin 6i. The outer edge of the lip
of the hook is de?ned by an axial line 62, and
that portion of the lip of the hook merging with
the inside of the mouth of the hook may be
beveled off, to form a beveled edge 63, so that
the apex 83 of the lip is formed by the lines 59,
63. The free end of the hook is de?ned by a line
64, in a plane transverse to the axis of the hold
ing means 49. The chin of the hook may also be
beveled, to form a ‘beveled margin 65.
The holding means 49 serves also to carry an
insulating member 66, an outside diameter of
which is approximately equal to the inside diam
eter of the shell 50, adapted to abut diametrical
ly opposite segmental ?anges 61, 68 extending
Immediately below the projections 10, ‘II, as
viewed in Figure 5, the shell 50 is provided with
the respective rearward projections l4, ‘15. The
space between the projections ‘l4, 15 is less than
the space between the projections ‘I2, 13.
The .
projections 12, ‘I3, l4, ‘l5, and the projections 69,
10, ‘H may be arranged in any other suitable
manner, so that the insulating member 66 and
the shell 50 may be assembled in but one relative
rotative relation. In order to hold the insulating 60
ly extending ?ange 46 on the collar. The collar
45 may be fastened to the base 42 in any suitable
manner, as by solder 41 (see Figure 8). The
lamp ?ange 46 is adapted to be seated on the
65 bottom of a rearwardly extending pocket 48 pro
vided on the reflector 4|, and a holding means
member 66 to the shell 59, the projections 12, ‘I3,
‘l4, 15 are provided with ?ngers 16, which may
49, cooperating with the lamp ?ange 46, is pro
vided for holding the lamp 40 assembled with
formed as enlarged heads on shanks ?tted over
the holding means 49‘ and with the re?ector 4 I, as
70 will more fully appear. By the term rearwardly,
or rear, is meant in a direction away from the
light source of the lamp 40, frontwardly, and
front, of course, having the opposite signi?cance.
The holding means comprises a shell 59, desir
75 ably of generally cylindrical form, which may be
40
radially inwardly from the rear end of the shell
50. The insulating member 66 is further pro
vided with a plurality of circumferentially spaced
radial projections, in this instance three, two of
which 69, 10, may be seen in Figure 5, for ex
ample, and a third of which, ‘H, is located at the
other side of the member 66, analogously to the
projection 10. On opposite circumferential sides
of the projection 69 are disposed two rearwardly
extending projections 12, 13 on the shell 5!].
be clinched radially inwardly over the rear face
of the insulating member 66.
The insulating member 66 is adapted to carry 65
contacts l1, 18, these contacts being desirably
and swedged to the ends of conductors ‘I9, 80
respectively. The conductors ‘I9, 80 are disposed 70
in sleeves 8|, the sleeves being slidable within
bushings 92, which are ?xedly mounted, in any
suitable manner, as by beading, through- the in
'sulating member 66. Springs 84 surround the
sleeves 6i between the bushings and flanges 85,
2;-117,758
on the front ends of the sleeves, abutting, the con
tacts
11,
is.
e
.
.
,
I
,
i
~ 3
tobe moved ‘radially, inwardly, theconnector
portions5I, 52, ‘53 beingresilient enough for that
The contacts TI‘, 18, are adapted ,to‘make 0011-. purpose. Further rotation in a counterclock
tact respectively with a pairlof‘ contacts 86, 81 on , wise. direction will bring the~trailing (edges of the
the base of the incandescent lamp 49. The con
throats 55 of theihooks beyond thecrests oi the
tact'86, directly'behi‘nd the contact 81 in Figure cams‘ I99,}whereupon the hooks will snap radially
1,‘ is the. contact which engages the spring pressed ‘ , outwardly into the seat portions 98, to the position
contact 17, visible in that ?gure. , The provision shown in Figure 4. The spring loops 92, 93, 94'
‘ of the plurality of contacts on the lamp base en- I may then, be flexed and thetongues 95 inserted
II
ables the use of a multiple filament lamp, the , in the recesses 99. ,Theassembled holding means,
lamp being here shown‘as provided with two ?la- . unassembled with the lamp 49, or reflector M,
ments 88, 89, one ol'which, 88, may desirably have then has the appearance shown in Figures 4 and
its lighting center at some predetermined point 5, It will be evident that the apexes 83 of the
with respect to there?ector, as for example the lips of the hooks are in contactwith the front face
focus, and the other of which, 89, may be, dis
placed from the ?lament 99 and may be used for
providing dim light or so-called tilted light. The
?laments 88, 89 have their terminals connected
in a well known‘ manner to the lamp base 42
and to the contacts 99, 81 on the lamp base. The
‘ passage of current to either one or both of the
1: Li
~?laments 88, 99 may be controlled in any suitable
manner by switching means (not shown) inter
posed in the ‘conductors 19, 89.
The holding means 49 also includes a biasing
means 99, in this instance comprising a ring
9| of sheet metal, provided with portions, circum
ferentially unequally spaced, extending in a
generally radial direction outwardly from the
ring, and looped or bent radially inwardly so as
to form the spring loops 92, 93, 94. The free ends
of the spring loops may be reduced in width, to
form tongues 95, adapted to be received respec
tively in a plurality of recesses 99 which may be
formed in the front margin of the shell 59. The
recesses 96 are unequally spaced circumferentially
to accommodate the unequal spacing, of the
spring loops 92, 93, 94. The spring loops 92,, 94
are spaced less than 120° apart, and these loops
are here shown as of the same width but each
of the ring 9 I, the ring beingpressed against these
.apexes by the action of the springloops 92, 93, 94.
The lamp ?ange 45 comprises a portion I9I,
of generally circular outline, and aiplurality of
radially extending sectoral, projections, desirably
three, I92, I93, I94. The peripheral arcs of the 20
sectoral projections are here shown as equal,
but the projections‘ are circumferentially un
equally spaced, the lower projections, I92, I94,
as viewed in the drawings, being less than 129°
apart, and the upper projection, I93, being so
positioned that its axis of symmetry bisects the
angle between the axes of symmetry of the lower
projections, I92, I94. Each sectoral projection
I92, I93, I94 is here shown as being providedawith
an axially rearwardly extending projection I95,
conveniently formed by forming a depression
I96 in the front face of the sectoral projection.
For cooperation with the hooks of the connector
portions 5|, 52, 53, the lamp flange 46 is provided
with a plurality of compound apertures I91, I98, ..
I99, adapted to receive the hooks. Each com
pound aperture comprises a set of two apertures,
and since all of the apertures are identical, but
is narrower than the spring loop93.
The ring 9| has a central aperture 91 of ap
proximately the same diameter as the circle de
?ned by the inner peripheries of the connector
one of them will be described. The aperture I98,
for example, comprises a larger portion H9 and 40
a smaller portion III, these portions in this in
stance being separate from each other. Both the
larger aperture H9 and the smaller aperture III
have a radially outer circumferential edge and a
portions 5|, 52, 53. The aperture 91 is] provided
with a plurality of compound auxiliary apertures
arcs concentric with the lamp base 42, and of the
radially inner circumferential edge, de?ned by
or recesses, which form radial extensions of the
same or substantially the same radius of curva
central aperture 91.
These compound apertures
ture as the outer andinner peripheries of the
‘ are circumierentially unequally spaced, and as
books of the connector portions 5I, 52, 53. The
circumferential ends of the larger aperture are
de?ned by radial lines H2, H3, while the cir
they are identical, but one of them will be spe
‘ ci?cally
described.
Each
compound
aperture
comprises a narrow or seat portion 98 having
radial margins spaced circumferentially a dis
tance slightly greater than the throat 55 of one
- of the hooks of the connector portions 5|, 52, 53.
Each compound aperture further comprises a
wider or entrance portion 99 having a radially
outer circumferential margin which may if de
‘sired be narrower circumferentially than the
60 distance between the longitudinal margins 51, 62
of one of the hoks. The seat portion 98 and the
entrance portion 99 are separated by‘a cam sur~
cumferential ends of the smaller aperture II I are
de?ned by radial lines H4, H5. The adjacent
lines H3, H4 form between them a generally
radially extending portion IIG which is‘ of such _
circumferential width as to be receivable in the
bottom 59,59 of the mouth of the hook of the
connector portion 52, for example. Thus, the
edges I I3, I I4 are adapted‘ to engage the V-shaped
recess formed by the edges 59, 69 of the bottom of 60
the mouth of the hook of the connector 52.
The
face I99, extending from the clockwise margin
‘of the seat portion 98 to the radially outer cir
r‘ cumferential margin of_ the entrance portion 99.
compound apertures I91, I 99, ‘in a manncrde
scribed in connection with the aperture I98, also
vform radially extending portions II6 adapted to
cooperate with the hooks of the connector por
It will be evident that the hooks of the con
“nector portion 5|, 52, 53 may be inserted in an
tions 5|, 53, in a manner similar to that described
the shoulders 58 abut the rear face of the ring
extending portions I I9 are desirably so positioned
that they are in radial alinement with the axial
in connection with the radially extending portion
axial direction through the entrance portions 99
IIG, left by the compound aperture I98, and the
of ihe compound apertures of the ring9l, until , hook of the connector portion 52. The radially
9i, whereupon the shell 59, and therefore the
hooks, may be‘ turned in a counterclockwise di
rection, as viewed in Figured, whereupon the
leading edges of the throats 55 of the, hooks will
75
,engague‘the cams I99, thereby causing the hooks
w
projections I95 respectively andof course are
circumferentially unequally spaced to ‘accord
with the spacing of the hooks‘of the connector
portions 5|, 52, 53;
75
4
2,117,758
The re?ector pocket 48 has a cylindrical portion
Ill and a plane bottom or end ?ange H6 which
is fragmentary in form. The end ?ange II8 has
a central aperture “9 which is slightly larger
II V
then the apexes 83 of the hook lips will'snap re
spectivelyjnto the smaller aperture portions III
of the compound apertures I01, I08, I09 of the
lamp ?ange. The lamp 40 and holding means
49 are now completely assembled and have the.
position shown in Figures 6 and 7. In that po
than the circle de?ning the periphery of thepor
tion IOI of the lamp ?ange 46. ‘The end ?ange
H8 is fragmentarily cut away to form radially sition the sides 59, 60 of the hook mouth strad- ‘
extending recesses I20, I2I, I22. These recesses .dle the radial portion II6 of the lamp ?ange,
leave the end ?ange H8 in the forni‘of three ?at those sides being in contact with ‘the edges H4,
segmental end ?anges I23, I24, I25, the front
H3 respectively of the radial portion H6. The 10
surfaces of which, at least, de?ne a single plane. front face of the biasing means 90 of course is
vThe lower recess, I20, as viewed in Figure 9, for ' pressed toward the rear face of the ?ange 46.
example, is slightly wider circumferentially than
The assembled lamp, 40, and holding means,
' one of thesectoral projections I02, I03, I04 of the
49, now constitute a unit which is adapted to be
lamp ?ange 46, and the end ?anges I23, I26 are
in turn assembled with the re?ector 4 I , as follows.
of substantially the same circumferential width
as the sectoral projections I 02, I04. How'
sembled as a unit in Figures 6 and 7, are brought
ever, the end ?ange I24 is somewhat wider than
the ?anges I 23, I 25, and also is somewhat'wider
than the space between: the sectoral projections
into axial alinement with the aperture H9 in the
re?ector M, with the bulb of the lamp 40 facing
the rear of the re?ector, the bulb of the lamp is
The unitary lamp and holding means, shown as
I02, I04. Furthermore, the end ?anges I23, I24,
passed through the re?ector aperture H9, and
I25 are so positioned that in one relative rota
tive relation as between the lamp ‘40 and the re-'
' ~ inner periphery of the cylindrical portion II1 of
the unit is rotationally so positioned that the sec
toral projection I04 may be passed through the
recess I20. In this position the sectoral projec
tions I02, I03, I04 will of course be in a position
to pass through the recesses I2I, I22, I20 respec
tively. The lamp and holding means unit is then
moved axially toward the re?ector until the front
the pocket 48 is here shown as slightly larger
surfaces of the spring loops 92, 93, 94 abut the
?ector 4|, the axes of symmetry of the sectoral
projections I02, I03, I04 on the lamp ?ange 46
will register with the axes of symmetry of the
end ?anges I23, I24, I25. The diameter of the
30 than the diameter of thecircle de?ning the outer
peripheries of the sectoral projections I02, I03,
I04 of the lamp ?ange, but thecylindrical por
tion of the pocket may gage, that is, snugly ?t
further axially, against the bias of the biasing
when the axial projections I05 arev seated on the
end ?anges I23, I24, I25.
,
means 90, until the rear face of the lamp ?ange
46 is in front of the front faces of the end ?anges
I23, I24, I25. The lamp and holding means unit are then rotated in a clockwise direction, viewing
The plane of the rear faces of the end ?anges
I23, I24, I25 is in the same plane .as the ?angeless
the re?ector from the rear, whereupon the spring
loops slide over the leading ridges of the pairs of
portions of the rear end of the cylindrical portion
ridges I26, rotation being discontinued when the
trailing edges of the spring loops 92, 93, 94 snap 40
off of those ridges. The spring loops 92, 93, 94
the outer peripheries of the sectoral projections,
40 Ill, the end ?anges I23, I24, I25 are shown as
each provided, on their rear faces, with a pair
of parallel, generally radially extending ridges
I 26._ > The sides of the ridges desirably serve as
50
rear margin of the cylindrical portion II1. The
lamp and holding means unit is then moved still
then are disposed between the pairs of ridges I26,
and the axial projections I05 on the lamp ?ange
cam surfaces. The space between the respective
‘pairs of ridges I26 and the space between the
ridges of a given pair,>are so selected that the re
cess‘es, formed by the pairs of ridges, on the rear
I24, I25. The position of these parts is then as
shown in Figures 1, 10, 11, and 12.
faces of the‘ end ?anges I23, I24, I 25, will serve
as snugly ?tting seats for the spring loops 92,
It will be evident that the biasing means 90
biases the shell 50 and the hooks of the con
93,
94.
-
-
'
'
.
The procedure in assembling the lamp 40'with
The hooks
of the connector portions 5I, 52, 53 are brought
_into registry with the wider portions H0 of the
compound apertures I01, I08, I09 in the lamp
?ange] “and the hooks and ?ange are moved
axially with respect to each other,‘ against the
v the holding means 49 is as follows.
46 bear, in this instance, against the approximate
circumferential centers of the-end ?anges I23, 45
nector portions 5|, 52, 53 rearwardly and conse 50
quently the hookspress the ?ange 46 toward the
end ?anges I23, I 24, I25. Since the lamp ?ange
46 is accurately pre-positioned with respect to
its distance from the ?laments 88, 89,’ and the
direction of the plane‘of the ?ange 46 is pre
positioned with respect to the axis of the lamp
40, and furthermore, since the spring loops 92,
93, 94, in cooperation with the pairs of ridges
the'hooks pass through'the wider apertures IIO, I26 accurately determine the position of the lamp
60 whereupon the rear face of the‘ ?ange 46, and v40 about its axis with respect to the re?ector_4I', 60
more particularly, the axial projections I05, come the ?lament 88, and also the auxiliary ?lament
into abutment with the front‘ faces of the spring/ 89, will be positioned at, the desired places with
loops 92, 93, 94. The holding means 49 and the respect to the re?ector. It will be noted, more
lamp 40 are now turned about their axes in such over, that the lamp ?ange 46 cannot be passed
direction relativelyto each other that the beveled through the re?ector upside down because the
portions 63 of the hook lips engage the radial end ?ange I24 cannot be straddled by the sectoral
edges “3 of the larger aperture portions IIO of projections I02, I04.
the compound apertures I01, I08, I09 of the lamp ' The ?ange 46 may be pre-positioned by as
?ange. The resulting cam action will pull the sembling the lamp with the positioning means 43
bias of the contacts .11, 18, so that the ‘ends of
hooks further through the lamp ?ange 46,-against
and placing the positioning means 43 on a stand
the bias of the biasing means 90.
Continuance.
ard with the shell 44 within the collar 45 and then
of the relative rotative movement of the lamp 40
adjusting the lamp until the lighting center of
and'holding means 49 will cause the apexes83
of the lips'of the hooks to ride over the front
the desired ?lament thereof is in a predetermined
70
position, whereupon the collar 45 is soldered to
76 faces of the radially extending portions “6, and ‘ the shell 44. 'The position of other ?laments of 76
2,117,758
the lamp may be likewise simultaneously prede
snugly but slidably disposed through apertures
termined.
I33 in the ?ange I 21, and are similarly disposed
through registering apertures I34 in a biasing
-
It will be noted that, since the axial projections
I05 are unequally circumferentially spaced, and
the spring loops are similarly spaced, the pro
jections I05 might be pressed against the ‘end
?anges vI23, I24, I25 with undesirably unequal
force if .the spring loops were of equal strength.
This inequality may desirably be equalized by
10 making the spring loops 92, 94 each of less width,
and therefore of less strength, than that of the
spring loop 93.
_
When it is desired to disconnect a lamp 40
from the re?ector H, the lamp 40 and holding
15 means 49 are turned as a unit with respect to
the re?ector until one or the other of the projec
tions I02, I04 on the lamp ?ange 46 is brought
into registry with the recess I20, whereupon the
lamp 40 and holding means 49 may be removed
as a unit by axial movement with respect to the
re?ector.
means I35, here shown as an annulus I38 of spring
sheet metal having three radially outwardly ex
tending ears I31, I38, I39. The lower ears I31,
I39, as viewed in the drawings, are spaced some
what morec‘than 120° apart, and the ‘upper ear,
I38, is hereshown as so disposed that its axis of
symmetry bisects the angle between the axes of 10
symmetry of the lower ears I31, I38. The an
nulus I36 has a central aperture I40 which is
here shown as of such diameter that when the
biasing means I35 is slipped over the shell 50a
toward the ?ange I21, the front margin of the 15
aperture I40 will abut a ?llet I4I joining the
?ange I21 and shell 58a, the biasing means I35
being consequently spaced somewhat from the
rear face of the ?ange I21. The connector pins
5Ia, 52a. 53a may be held assembled with the 20
?angeul21 and the biasing means I35 by forming
'
The lamp 40 may be removed from the holding
means 49 by turning the lamp about its axis in a
counterclockwise direction, as viewed in Figure 6,
a lateral extension at the rear ends of the shanks
I28, as by ?aring out the free ends of the shanks
to form the ?ared portions I42.
.
whereby‘the' edges II4 of the radial portions H6,
The shell 50a is here shown as carrying con
by cam action against the sides 59 of the bottoms
of the hook mouths, force the hooks frontwardly
with respect to the biasing means 90, against the
tacts 11a, 18a, constructed and arranged the
bias of the biasing means, thereby permitting dis
30 engagement of the lamp, as will be evident.
Referring 'now to the embodiment shown in
Figures l3'through 24.‘ In this embodiment an
incandescent electric lamp 40a is also adapted to
be connected to a mounting or re?ector 4Ia. The
of Figures 1 through 12, and associated‘ with the
shell 58a in the same manner as are the con
tacts 11, 18 with the shell 50, and hence requir
ing no further description. The contacts 11a,
18a are cooperable with~contacts 86a, 81a, car
ried by the lamp base 42a, and these contacts
serve to electrically connect conductors 18a, 88a,
to ?laments 88a, 89a, as in the case of the em
this instance includes laterally extending position~
bodiment of Figures 1‘ through 12, and hence al
ing means 43a also forming part of the means for
so require no further description.
collar 45a may be fastened to the shell 44a in
any suitable manner, as by solder 41a (see Figure
45 1'1). The lamp ?ange 46a is adapted to be seated
on the bottom of a rearwardly extending pocket
48a provided on the re?ector Ma; and a holding
means 49a, cooperating with the lamp ?ange 46a,
is provided for holding the lamp 48a assembled
50 with the holding means 49a and with the re
‘
The lamp ?ange 46a comprises a portion "Ha I
of generally circular outline, and a plurality‘of
radially extending sectoral projections I02a, I 83a,
shown as being provided with an axially rear:
desirably of generally cylindrical form, which may
be seamless, and desirably formed of sheet metal.
At its front ‘end the shell 50a is provided with an
formed by forming a depression 10611 in the front
face of each sectoral projection, the projections.
annular radial ?ange I21, which carries a plu
of symmetry of the sectoral projections.
rality of concentrically arranged unequally cir
~For cooperation with the connector pins 5Ia,
52a, 53a, the lamp ?ange 46a is provided‘with
three circumferentially spaced compound aper
tures IIl1a, I08a, I09a, unequally spaced to cor
53a, desirable three.
'
The connector pins 5 la, 52a, 53a, are all identi
cal and therefore a detailed description of one
of them will serve for all. An enlarged view of
one of the connector pins is shown in Figure 24,
as it appears before assembly with the holding
means 49a. Each connector pin has a cylindrical
shank I28, which before assembly with the ?ange
is of uniform cross-section. At the front end
each connector pin is provided with a head I29
having a cylindrical portion I3iI,/the cylindrical
portion being joined to the shank I28 by a frustro
conical portion I3I. The free end of the head I28
is here shown as also provided with a frustro
conical portion, I32. The connector pins 5Ia, 52a,
53a, may be hollow as indicated in Figure 24.
The shanks I28 of the pins 5Ia, 52a, 53a are
40
III4a, desirably three. The peripheral arcs of the
sectoral projections “12a, I03a, I04a are here
shown as equal, but the sectoral projections are
circumferentially unequally spaced, the upper
projections, I Ma, “Ma, as viewed in the draw 45
ings, being less than 120° apart, and the lower
projection I03a being so positioned that its axis
of symmetry bisects the angle between the axes
of symmetry of the upper projections III2a, IIl4a.
Each sectoral projection “Ha, I 0311, "Ma is here 50
?ector 4Ia, as will more fully appear.
The holding means 49a comprises a shell 50a,
‘cumferentially spaced connector pins 5Ia, 52a,
25
same as the contacts 11, 18 of the embodiment
lamp 40a is provided with a base 42a, which in
connecting the lamp to the re?ector 4Ia. The
base 42a includes a shell 44a, and the laterally
40 extending portion of the base 42a comprises a
collar 45a, surrounding the shell 44a, and a radi
ally extending ?ange 48a on the collar. The
60
5
wardly extending projection I 85a, conveniently
Ill5a being here shown as located on the axes 55
respond to the unequal spacing of the connector _
pins. The compound apertures I 01a, I08a, IIi9a
are here shown as disposed in the portion I0 Ia of
the lamp ?ange. Each compound aperture I01a,
"18a, I89a. comprises an arcuate smaller 02' seat 65
portion I43, and an arcuate larger or entrance
portion I44, oircumferentially spaced from the
seat portion I43, the seat and entrance aperture
portions being joined by a connecting portion I45
tapering from the entrance portion I44 to the 70
seat portion I43. The margins of the connecting
portion I45 are, in this instance, arcuate and
generally tangent to the entrance portion I44,
while the junction between the connecting por
tion I45 and the seat portion 1431s narrower than 75
1
2,117,758
6
the diameter of the circle de?ned by the seat por
tion, thus forming humps I46 at the junction.
The centers of. the seat portions I43 are here
shown as on the respective radii intersecting the
(Fl
projections I05ai.
The re?ector pocket 48a has a cylindrical por
tion II1a and a plane bottom or end ?ange II8a
which is fragmentary in form. The. end ?ange
I I8a has a central aperture I I9a which is slightly
10 larger than the circle de?ning the periphery of
the portion I 0Ia of the lamp ?ange 46a. The
end ?ange N80. is fragmentarily cut away to
form radially extending recesses I20a, I2Ia, l22a.
These recesses leave the end, ?ange II8a in the
form of three ?at segmental end ?anges I23a,
I24a, I25a, the front surfaces of which, at least,
de?ne a single plane. The upper recess, I20a,
is slightly wider circumferentially than one of the
sectoral projections I02a, I03a, I04a, of the lamp
20 ?ange, and the end ?anges I23a, I24a, I25a are
of substantially the same circumferential width
as the sectoral projections. Furthermore, the
end ?anges I23a, I24a, I25a are so positioned
that in one relative rotative relation as between
49a now constitute a unit which is adapted to be
in turn assembled with the re?ector Ma. The
unitary lamp and holding means are brought
into axial alinement with the aperture H90. in
the re?ector, with the bulb facing the rear of the
re?ector, the unit is rotationally so positioned
that the sectoral projections I02aj, I04a' will
straddle the end ?ange I23a and the lamp is
moved axially forward through the re?ector aper
ture II9a, the sectoral projections I02a, I03a,
I04a passing respectively through the recesses
10
I2Ia, I22a, I20a, and the front faces of the ears.
I31,
I38, I39
coming
into
contact
with
the rear faces of the end ?anges I25a, I23a, I240’.
The unit is then moved frontward sufficiently,
meanwhile ?exing the biasing means I35, so that
the sectoral projections I02a, I030, I04a will clear
the end ?anges I23a, I24a, I25a. The lamp and
holding means unit is then rotated in a clockwise
direction, as viewed from the rear of the re?ector, 20
thereby causing the ears I31, I38, I39 to engage
the leading cam surfaces I5I, and further clock
wise rotation causing these ears I31, I38, I39 to
snap into the axial recesses I50 on the re?ector
ears I41, I48, I49. The parts then assume the
25 the lamp 40a and the re?ector 4Ia, the sectoral
projections I02a, I03a, I04a- on the lamp- ?ange position shown in Figures 13, 21, and 23, in which
will register with the said end ?anges. The the axial projections I05a on the lamp flange 46a
diameter of the inner periphery of the cylindrical are in engagement with the front faces of the
end ?anges I23a, I24a, I25a and are held in that
portion I I1a of the pocket is here shown as slight
30
‘position
by the bias of the biasing means I35.
ly
larger
than
the
diameter
of
the
circle
de?ning
30
It
will
be
evident
that
since
the
lamp
?ange
46a
the outer peripheries of the sectoral projections
is accurately pre-positioned with respect to its
I02a, I03a, I04a of the lamp ?ange, but the cylin
drical portion of the pocket may gage, that is, distance from the ?laments 88a, 89a, and the
snugly fit the outer peripheries of the sectoral direction of the plane of the ?ange 46a is pre
positioned with respect to the axis of the lamp
35 projections, when the axial projections I05a are
40a, the ?laments 88a, 89a will assume a desired
seated on the end ?anges I23a, I244, I25a.
For cooperation with the ears I31, I38, I39 on predetermined position with respect to the re
the biasing means, the re?ector 4Ia is provided ?ector 4Ia when the parts are assembled as
with three axially rearwardly extending ears I41, hereinbefore described. Also, it will be noted in
the above connection that the ears I31, I38, I39
40 I48, I49. The inner peripheries of the ears I41,
are interengageable with the recesses I50 in the
I48, I49 are here shown as forming continua
tions of the cylindrical surface de?ning the inner re?ector ears I41, I48, I49 in but one relative
'
peripheral cylindrical surface of the portion I I1a rotative relation.
It will be observed from Figures 18 and 21 that
of the re?ector pocket. At their free ends the
the ears I31, I38, I39 of the biasing means do
45 ears I41, I48, I49 are provided with axial recesses
I50, the seats of which are of such width and not register with the sectoral projections, I02a,
I03a, I04a, of the lamp flange'as do the spring
position as to be complementary to the ears I31,
I38, I39 of the biasing means, when the sectoral loops 92, 93, 94 in the embodiment of Figures 1
projections I02a, I03a, I040. on the lamp ?ange through 12, but on the contrary,'are positioned
circumferentially between the sectoral projec
50 are in registry with the end ?anges I23a, I24a,
tions. The construction and arrangement of the
I250 of the pocket. The recesses I50 in the re
?ector ears are approached on both sides, from
the rear faces of the end ?anges I23a, I24a, I25a,
by rearwardly inclined portions I5I, of the re
55 ?ector ears, forming cam surfaces.
The lamp 40a may be assembled with the hold
ing means 49a as follows. The entrance portions
I44 of the compound apertures I01a, I08a, I09a
are brought into registry with the heads I29 of
60
the connector pins 5Ia, 52a, 53a, the lamp ?ange
46a. being slipped over the heads I29, against
the bias of the spring pressed contacts 11a, 18a,
until the rear face of the lamp ?ange is in con
tact with the front face of the ?ange I21. The
lamp 40a is then rotated clockwise, as viewed in
Figure 18, thereby causing interengagement of
the margins of the. tapering portions I45 of the
compound apertures I01a, 108a, IBM and the
frustro-conical portions I3I of the heads I29 of
the connector pins. Further clockwise rotation
of the lamp 40a causes the frustro-conical por
tions I3I to pass the humps I46 and snap into the
seat portions I43. The parts then have the posi
tion shown in Figures 18 and 19.
75
The assembled lamp 40a and holding means
biasing means I35 is in any event such that a de
sired su?icient equalization of. bias on the projec
tions I05 is attained.
The method of disconnection of the parts is
evident from the hereinbefore described method
of assembly.
Referring now to the embodiment shown in
Figures 25 through 35. In this embodiment an
incandescent electric lamp 40b, is also adapted to 60
be connected ,to a mounting or re?ector, 4Ib.
With the exception of the fact that the lamp 40b
has a positioning means 43b the collar 45b of
which extends frontwardly from the ?ange 46b,
instead of rearwardly, the lamp 40b is identical
with the lamp 40a. As in the previously de
scribed embodiments, the ?ange 46b is adapted
to be seated on the bottom of a rearwardly ex
tending pocket 48b provided on the re?ector MD;
and a holding means 491), cooperating with the
lamp ?ange 48b is provided for holding the lamp
40b assembled with the holding means 4% and
with the re?ector Mb.
The holding means comprises a shell 50b, de
sirably of generally cylindrical form, which may 75
8,117,758 _
,
_
7
be seamless, and desirably formed of sheet metal.
The shell 50b carries contacts 111), 18b, con
structed and arranged, for cooperation with lamp
?ange I52 that the set of apertures I59 is in
alinement with the set of apertures I12.v The
larger portions I65 of the bayonet type slots are
contacts 86b, 81b, the same as the contacts 11, 10
and the contacts 86, 81 of the embodiment of
Figures 1 through 12. The contacts 11b, 18b
and 861), 81b serve to electrically connect con
ductors 19b, 801) to ?laments 881), 89b, as in the
case of the embodiment of Figures 1 through 12,
10 and hence no further description is required.
At its front end the shell 501) is provided with
a generally annular end ?ange I 52, which carries
a plurality of concentrically arranged unequally
passed over the cross arms I61 of the T-‘shaped
CI
30"
projections, to bring the seats I66 of the bayonet
type slots against the front faces of the leg por
tions I68 of the T-shaped projections. The con
nector pins 5Ib, 52b, 53b may then be passed
through the alined sets of. apertures I59 and, I12,
to the position shown in Figure 29, in which“. the 10
small ends of the frustro-conical portions‘ I 51
are in abutment with the margins of the aper
tures I59 in the annular portion I6I of the bias
circumferentially spaced connector pins 5Ib, 52b, ing means, and the annular portion I 6| has been
53b, desirably three. These connector pins 5Ib, moved somewhat toward the front face of the
52b, 531) are all identical, and therefore a‘ de-. ?ange I52 to put the biasing means I60 under a
tailed description of one of them will serve for predetermined stress. The free ends of the con
all. An enlarged view of one of the connector nector pins 5Ib, 521), 531) are then transversely
pins is shown in Figure 35, as it appears before locally squeezed or swedged to form laterally
assembly with the holding means 491). Each extending projections I14 which are adapted to 20
connector pin is here indicated as hollow and engage the rear face of the ?ange I52, under the
as having a cylindrical shank I53, which is closed bias of the biasing means I60. The holding
at its free end I54, and, before assembly with the means 491) then has the appearance as shown in
holding means 491), is of uniform cross-section. Figures 28 and 29.
‘
At the front end the pins are provided with heads
The re?ector pocket 481) has a cylindrical por
I55 having a cylindrical ‘portion I56, the cylin
tion H11) and a plane bottom or end ?ange H81)
drical portion being joined to the shank I53 by a which is fragmentary in form. The end ?ange
frustro-conical portion I51. The free end of the H81) has a central aperture I I91) which is slightly
head I56 is‘ here shown as provided with a larger than the circle de?ning the periphery of
rounded margin I58.
-
.
The shanks I53 of the pins 5Ib, 521), 53b are
snugly but slidably disposed through apertures
I59 in a biasing means I60. The biasing means
I60 is shown in Figure 27, developed in a plane,
03 Cal as it appears before it is completely formed and
assembled as a part of the holding means 49b.
The biasing means I60 includes an annular part
I6I having radially outwardly extending projec
tions IBM, “5311, IBM, here shown as provided,
40 in their slightly wider free ends, with bayonet
type apertures each having a wider entrance
portion I65 and a narrower seat portion I66.
For
cooperation with these bayonet type apertures
the ?ange is provided with three T-shaped radial
projections, the cross arm I61 of the T being
adapted to pass through the wider aperture por
tion I65 of the bayonet type slots in the pro
jections I62a, I63a, I64a, whereas the leg I68
of the T is adapted to ?t in the seat portion I66.
50 The T-shaped projections I61, I68 on the ?ange
I52 are" here shown as extending radially from
wider bases I69, themselves extending radially
from the ?ange I52.
7 '
The biasing means I60 is provided with three
frontwardly axially extending projections or .de
tents I10, here shown as 'of generally hemi
spherical form and conveniently formed by mak
ing depressions I1I in the opposite face of the
biasing means. These detents are here shown
60 as located near the outer margin of the portion
I6I,. near the circumferentially counter clock
wise side of the radially extending projections
IBM, “5311, IBM.
'
The ?ange I52 is provided with three apertures
I 12 adapted to snugly but slidably receive the
shanks I53 of the connector pins 511), 52b, 53b.
These apertures I 12, and the.apertures I59 in
the biasing means I60, are adapted to be alined
with each other. In order to assemble the bias
70 ing means I60 withthe ?ange I 52, the radially
extending projections I62a, I63a, I64a, as shown
in Figure 27, are bent radially inwardly to form
spring loops I62, I63, I64, the ends I13 of which
extend frontwardly in a generally axial direction.
75 The biasing means I60 is then so related to the
the portion I Nb of the lamp ?ange 461)._ The 30
end ?ange I I81) is fragmentarily cut away to form
radially extending recesses I201), I2Ib, I221).
These recesses leave the end ?ange II8b in the
form of three segmental end ?anges I231); I24b,
I251), the front surfaces of which, at least, de.
?nel‘a single plane. The rear faces of the end
?anges I23b, I241), I251) are ?ush with a plane
de?ning the rear end of the cylindrical portion
H11) of the re?ector pocket. The end ?anges
I231), I201), I25b are of such width and position
as to be reglstrable with the sectoral projections
I02b, I031), I041).
Each end ?ange is provided with a recess or
aperture I15, these apertures I15 being so located
in the end ?anges as to be complementary to the 45
hemispherical detents I10 when the sectoral pro
jections I021), I03b, I041) of the lamp 401) are in
alinement or registry with the end ?anges I231),
I241), I251) of the re?ector pocket.
The lamp 401) may be assembled with the hold— 50
ing means 49b by cooperation between the com
pound apertures I011), I081), I091) and the con
nector pins 5Ib, 52b, 53b of the holding means
691) in exactly the same manner as has already
been described in connection with the lamp 40a
and the holding means 49a of the embodiment of
Figures 13 through 24. The parts then have the
position shown in Figures 30 and 31. The biasing
means I60 acts to press the seat portions I43b of
the compound apertures I011), 108b, I091) ?rmly 60
against the frustro-co-nical portions I51 of the
connector pins 5Ib, 52b, 53b.
The assembled lamp, 401), and holding means,
491), now constitute a unit which is adapted to be
in turn assembled with the re?ector M1). The
u'nitary lamp and holding means are brought in
to axial alinement with the aperture H91) in the
re?ector, with the bulb facing the rear of the
re?ector, the unit is rotationally so positioned
that the sectoral projections I021), I041) will strad
dle the end ?ange I231) and the lamp is moved
axially forward through the reflector aperture
H91), the sectoral projections “1%, I031), I041)
passing respectively through the recesses I2I1),
I221), I201), and the front face of the annular 75
2,117,758
8
I11 are ?xed to the radial ?ange I210 by riveting
as at I19. The shanks I530 of the pins 5Ic, 52c,
is then moved frontwardly s'u?iciently, mean- , 530 are snugly but slidably disposed through reg
while ?exing the spring loops I62, I63, I64, so istering apertures I34c in a biasing means I350,
portion I6I coming into contact with the rear
end face of the re?ector pocket 48b. The unit
that the sectoral projections I021), I031), I041)
will clear the end ?anges I23b, I24b, I251). The
in
lamp and'holding means unit are then rotated
in a clockwise direction, as viewed from the rear
of the re?ector, the hemispherical detents I10
here shown as including an annulus I360 of spring
sheet metal having three radially outwardly ex
tending ears I310, I380, I390, the ears being dis
posed similarly to the ears I31, I38, I39 of the
biasing means I35 of the embodiment of Figure
13, but are here shown as somewhat narrower
meanwhile being cammed rearwardly by the
leading margins of the end ?anges I231), I241),
I251) of the re?ector pocket, continued clockwise
rotation eventually causing the hemispherical de
In addition, the ears I310, I380, I390 are nor
tents I10 to snap into the apertures I15 in the
of the annulus I360, as may be seen particularly
end ?anges. The parts then assume the position
shown in Figures 25, 33, and 34, in which the
axial projections I051) on the lamp ?ange 46b
in Figure 3'1. The central aperture I400 of the
that it will clear the collar 450 of the positioning
are in engagement with the front faces of the
means 430.
end ?anges I231), I241), I251), and are held in that
position by the bias of the biasing means I60.
It will be noted that when the parts are as
sembled, the connector pins 5Ib, 52b, 53b, and
the set of axial projections I05b, and the spring
loops I62, I63, I64 are respectively in radial aline
25 ment and hence, due to the unequal circumferen
tial spacing of these parts, it may be desirable to
make the spring loops I64, I64 each narrower
than the spring loop I62, if equalization of pres
sure on the projections I05b- is desired.
30
_
It will be evident that since the lamp ?ange
46b is accurately pre-positioned with respect to
its distance from the ?laments 88b, 89b, and the
direction of the plane of the ?ange is pre-posi
' tioned with respect to the axis of the lamp, the
35 ?laments will assume a desired predetermined
position with respect to the re?ector 4Ib when
the parts are assembled- as hereinbefore de
scribed. Also, in this connection, it will be noted
that the detents I10 are interengageable with
40 the apertures I15 in the end ?anges in but one
relative rotative relation.
Referring now to the embodiment shown in
Figures 36 through 38. In this embodiment an
incandescent electric lamp 400 is adapted to be
connected to a mounting or re?ector 4Ic.
The
lamp 400 is provided-with a base 420, which in
this instance includes laterally extending posi
tioning means 430 also forming part of the means
for connecting the lamp to the re?ector 4 I0. The
lamp 400 is here shown as identical with the lamp
40a of the embodiment of Figure 13, and accord
ingly the positioning means 430 corresponds to
the positioning means 43a of the lamp 40a, and
the ?ange 460 is adapted to be seated on the bot
tom of a rearwardly extending pocket 48c pro
55
.vided on ‘the re?ector M0; and a holding means
490 cooperating with the lamp ?ange 460, is
adapted to hold the lamp 400 assembled with the
holding means 490 and with the re?ector Me, as
60 will more fully appear.
The holding means comprises a shell 500, and,
similarly to the shell 5011, the shell is provided
at its front end with an annular radial ?ange
I210, which carries a plurality of concentrically
arranged unequally circumferentially spaced con
nector pins 5Ic, 52c, 53c, desirably three. The
connector pins 5Ic, 520, 530 have heads I55c
similar to the heads I55 of the connector pins
5Ib, 52b, 53b of the embodiment of Figures 25
70 through 35, and accordingly no further descrip
65
tion of the heads is necessary. However, in this
instance the connector pins 5Ic,’ 520, 530 are
shown as solid and as having shanks I530 pro
vided with reduced ends I11 ?tting in apertures
75 ' I18 in the radial ?ange I210. The reduced ends
oircumferentially and somewhat longer radially.
mally offset rearwardly out of the general plane
annulus I360 is made of sufficient diameter so
It will of course be evident that in
the present embodiment the biasing means I350
will be assembled with the. shanks I530 of the 20
connector pins 5Ic, 520, 530 before the connector
pins are riveted to the radial ?ange I210.
The rear end of the shell 500 is here shown as
carrying an insulating member 660 which in turn
carries spring pressed contacts 110, 18c, the con
struction and arrangement of these parts being
N in
here shown as identical with the construction
and arrangement of the similar parts in the em
bodiment of Figure 1, and requiring no further
description.
'30
It will be evident that by bringing the com
pound apertures in the ?ange 460 of the lamp
40c into registry with the heads of the connector
pins 5Ic, 52c, 53c, and moving the lamp axially
against the bias of the spring pressed contacts
110, 18c, and then rotating the lamp clockwise, as
viewed from the front thereof, to bring the
frustro-conical portions I510 of the connector
pins onto the seat portions I430 of the compound
apertures, the lamp may be assembled with the 40
holding means 490 and the parts will then have
the appearance in side elevation as shown in Fig
ure 37.
'
The re?ector He may be identical with the
re?ector Me of the embodiment of Figure 13, 45
(the re?ector 4Ia being shown in perspective in
Figure 22), with the exception that the seats
I500 (corresponding to the seats I50) will be made
narrower, if, as shown in Figure 38, the ears
I31c, I38c, I390 are narrower circumferentially 50
than the ears I31, I38, I39.
It will be obvious from the foregoing that the
assembled lamp 400 and holding means 490 may
be assembled with the re?ector Me in a manner
analogous to that already described in connection 55
with the lamp 4011, holding means 49a, and re
?ector Me of the embodiment of ‘Figure 13, it
being noted, however, that in this instance when
the parts are brought to the assembled position,
shown in Figure 36, the annulus I360 of the bias 60
ing means I350, by reason of its location front
wardly of the radial ?ange I210, will re-act rear
wardly against the front face of the radial ?ange
I210, whereas in the embodiment of Figure 13
the annulus I36 of the biasing means I35 re
acts rearwardly against the ?ared portions I42 of
the pins 5Ia, 52a, 53a. Thus, in the embodiment
of Figure 36, the biasing means not only biases
the connector pins rearwardly but also the shell
500.
70
It will be evident that when the parts are in
either'the position of Figure 37 or Figure 36,
the spring pressed contacts 110, 180 on the hold
ing means 49c will be in cooperative relation with
the contacts 86c, 810 on the lamp base 42c and 75
9
. 2,117,768
thus current may be supplied to the ?laments ‘ operative relation with the lamp contacts 86d,
(not shown) of the lamp 400, as already pointed
out in connection with the previous embodiments.
It will be evident that, for reasons analogous
to those stated in connection with the previous
embodiments, the ?laments of the lamp 40c will
assume the desired predetermined position with
respect to the re?ector 4 I0 when the parts are in
the assembled position of Figure 36.
10
Referring now to the embodiment shown in
Figures 39 through 41. In this embodiment an
incandescent electric lamp 4011 is adapted to be
connected to a mounting or re?ector Md. In this
embodiment the lamp 40d is identical with the
15 lamp 40:; used in the embodiment of Figure 13,
and is cooperable with a re?ector identical with
the re?ector Me of the embodiment of Figure
36. Here too the lamp ?ange ‘lid is adapted to
be seated on the bottom of a rearwardly extend
20 ing pocket 4801 provided on the re?ector Md,’
and a holding means #911, cooperating with the
lamp ?ange 46d, is provided for holding the lamp
40d assembled with the holding means 48d an
with the re?ector Md.
'
The holding means 49d includes a shell 5041,
similar to the shell 50a of the embodiment of
Figure 13, provided with a radial ?ange I80 at
its front end, but in this instance the radial
?ange I80 is provided with three radially ex
tending unequally circumferentially spaced re
silient ears I81, I 82, I83, so that, in front eleva~
tion, as shown in Figure 41, the ?ange I80 with
the ears I 8|, I 82, I83 appears similar to the bias
81d.
,
Referring now to the embodiment shown in
Figures 42 through 46. In this embodiment an
incandescent electric lamp Me is adapted to be
connected to a mounting or re?ector Me. The
lamp 40c is provided with a base 42c which in
cludes laterally extending positioning means 43c
also forming part of the means for connecting
the lamp to the re?ector Me. The laterally ex
tending portion of the base comprises a collar
45c, surrounding the shell 44c, and a radial ex
tending ?ange 06c on the collar 45c, which in
this instance extends from the rear end of the
collar 45a. The lamp ?ange Mie is identical with
the lamp ?ange 46a shown in Figure 17, and is
adapted to be seated on the bottom of the rear
wardly extending pocket 48c provided on the
re?ector Me; and a holding means ‘9e, cooper
ating with the lamp ?ange 46a, is provided for 20
holding the lamp 40c assembled with the holding
means 49c and with the re?ector Me, as will
more fully appear.
The holding means comprises a shell 50c, which
in this instance is of somewhat smaller diameter
than the shell 50a of the embodiment of Figure
13, but su?iciently large to permit reception of
the shell Me of the lamp base. At its front end
the shell 50c is provided with an annular radial
?ange I84 provided with three unequally cir 30
cumferentially spaced radially extending resil
ient ears I85, I86, I81. The ears I86, I81 are
here shown as less than 120° apart, and the axis
ing means I350 oi the embodiment of Figures 36 ,
of symmetry of the ear I85 as bisecting the angle
35 through 38. The ears I8I, I82, I83 are normally between the axes of symmetry of the ears I86,
slightly offset rearwardly from the general plane I81. The ears I85, I86, I81 are here shown as 35
of the radial ?ange I80, as may be seen best in offset, at their radially inner ends, rearwardly
Figure 40. The radial ?ange I80 is here shown as from
the general plane of the radial ?ange I84,
~40
carrying three connector pins 5Id, 52d, 53d, un
equally circumferentially spaced to correspond to
the spacing of the compound apertures in the
lamp ?ange 46d. The connector‘ pins 5Id. 52d,
53d are here shown as identical with the con
nector pins 5Ic, 52c, 53c'of the embodiment of
45 Figures 36 through 38 and are accordingly ?xedly
mounted on the ?ange I80 by riveting.
.
The shell 50d carries at its rear end an insu
lating member 66d which in turn carries spring
pressed contacts 11d, 18d, these parts being here
shown as constructed and arranged identically
with the corresponding parts of the embodiment
of Figure 1.
I
‘It will be obvious that when\it is desired to as
semble the lamp 4011 with the holding means 48d
the compound apertures of the lamp ?ange 46d
are brought into registry with the heads of the
connector pins 5Id, 5211,5311, the lamp being
moved axially against the bias of the spring
pressed contacts 11d, 18d and then rotated in
60 a'clockwise direction, as viewed from the front,
the parts being then in the position shown in
Figure 40, in which thespring pressed contacts
11d, 18d act to press the frustro-conical portions
I51d of the pins against the seat portions I43d
of the compound apertures of the lamp ?ange 4601.
The lamp 40d and holding means 48d having
been assembled, they may be assembled with the
re?ector Md in a manner which is obvious from
but the ears as a whole are each normally in
clined frontwardly, as may be best seen in Figure 40
43, when the holding means 49c and lamp 40c
are disassembled from the re?ector Me. The ears
I85, I86, I81 are provided with frontwardly ex
tending dome shaped projections or detents I88,
conveniently formed by making indentations I89 45
in the rear faces of the ears.
The holding means 48c carries a plurality of
concentrically arranged unequally circumferen
tially spaced connector pins 5Ie, 52c, 53c, for
cooperation with the compound apertures of the '
lamp ?ange 468. These connector pins 5Ie, 52c,
50
53c are identical with the connector pins 5Ic,
52c, 580 of the embodiment of Figure 36, for ex
ample, with the exception that the shanks I53e
of the pins are shorter. It will be noted that 55
the connector pins 5Ie, 52c, 53c are here shown
as mounted on the radial ?ange I84 in a position
displaced clockwise from the radial axes of sym
metry’of the ears I85, I86, I81.
At its rear end the holding means 48c carries 60
an insulating member Elie which in turn carries
spring pressed contacts 118, 18c, the construc
tion and arrangement of these parts being here
shown as identical with that of the corresponding
parts of Figure 1.
It will be evident that when it is desired to as
semble the lamp 40c with the holding means He,
the compound apertures of the lamp ?ange 46s
are brought into registry with the heads _of the
what has already been stated in connection with
the embodiments of Figures 13 and 36, thus bring
ing the parts to the position shown in Figure 39.‘ connector pins 5Ie, 52c, 53c, the lamp being 70
in which the ?laments (not shown) of the lamp moved axially against the bias of the spring
40d are in the desired predetermined relation with
respect to the re?ector Md. In both the position
of the parts shown in Figure 39 and Figure 40,
the spring pressed contacts 11d, 18d are in co
pressed contacts 11c, 18c and then turned in a
clockwise direction, as viewed from the front, to a
position in which the frusto-conical portions I512
of the heads of the pins‘ are seated in the seat 75
10
2,117,768
'
portions I43e of‘ the compound apertures of the
lamp ?ange 46c, the parts being then in the
position shown in Figure 43. - In this position of
the parts the detents I88 resiliently bear, to a
- desired extent, against the rear face of the lamp
?ange 46e.
.
.
‘The re?ector Me is here shown as identical
with the re?ector 41b of the embodiment of Fig
ure 25,, shown in detail in Figure 32, with the ex
10 ception that the apertures I 15e are located slight
ly differently from the apertures 115, for proper
cooperationwith the detents I88.
peripheral arcs of the sectoral projections I02),
I03)‘, I 04) of the lamp ?ange 45)‘. The arms I94
are normally inclined frontwardly, as may be
seen in Figure 48. The arms I94 are here shown
as provided at their ends with axially frontward
ly extending dome shaped projections or detents
I95 conveniently formed by making indentations
I96 in the rear faces of the arms.
Owing to
their relation to the projections I9I, I92, I93,
the detents I95 are unequally circumferentially 10
spaced. The radial projections I9I, I92, I93 on
the annular ?ange I90 are here shown as carry
It will accordingly be evident that after the
lamp 40c and holding means 49e have been as
ing three connector pins 5If, 52)‘, 53!,‘ these con
sembled ‘with each other, they-may be assembled
nector pins 5Ic, 52c, 53c of the embodiment of 15
Figure 36,. and they are likewise rigidly fastened
to the radial projections I9I, I92, I93. The cir
with the re?ector Me in a manner anologous
to that already described in connection with the
nector pins being of thesame form as the con
embodiment of Figure 25, it being noted that in
this instance, as the sectoral projections I02e,
I03e, I04e of the lamp ?ange 46c are passed
through the recesses I2Ie, I22e, I 20e respectively,
cumferential arrangement of the connector pins
the ears I85, I86, I81 will bear against the rear
tionship of the parts in this embodiment, the con
nector pins SH, 52)‘, 53), while similar to the pins
‘5Ic, 52c, 530 of the embodiment of Figure 36, have
, end surface of the cylindrical portion II1e of
5|)‘, 52], 53)‘ is of course such that they are co
operable with the compound apertures in the 20
lamp ?ange 46L, Owing to the illustrated rela
the re?ector pocket 48c, the ears I85, I86, I81
being ?exed rearwardly as the lamp is pushed longer shanks, I53)’.
25
axially frontwardly during the assembling operThe holding means 49)‘ carries at its rear end
ation. After the lamp ?ange 46e_has been passed _ an insulating member 66)‘ in turn carrying spring
through ‘the re?ector, the assembled lamp and pressed contacts 11), 18)‘, these parts being con
holding means are rotated in a clockwise direc
structed and arranged identically with the simi
tion, as‘viewed from the rear of the re?ector, lar parts of the embodiment ‘of Figure 1.
the detents I88 riding up onto the rearfaces of
It will be evident that when it is desired to as
the end ?anges I23e, I24e, I25e, continued rota
semble the lamp 40)‘ with the holding means 49)
tion causing the detents to snap into the seats
23 Cl
formed by the apertures I15e,' the parts being
then in the position shown in Figures 42, 45,
and 46.
_
>
It will be evident from the foregoing that when
the parts are in this assembled position the ?la
v10
the compound apertures in the lamp ?ange 46)‘
will be brought into registry with the connector
pins SI), 52)‘, 53)‘, the lamp being moved axially 35
‘against the bias of the spring pressed contacts
11)‘, 18) and against the bias of the resilient arms
I94, ‘and then rotated clockwise, as viewed from
ments 88c, 89c of the lamp We will be in the , the front, until the frustrb-conical portions I51)‘
desired predetermined position with respect to of the heads of the pins become seated on the 40
the re?ector 4Ie.
Referring now to the embodiment shown in
Figures 47 through 52. In this embodiment an
incandescent electric lamp 40)‘ is adapted to be
seat portions I43)‘ of the compound apertures.
The parts then have the position shown in Figure
48, in which the detents I95 bear against the
rear faces of the sectoral projections I02f, I03)‘,
connected to a mounting or re?ector 4If. The
I04)‘ of the ?ange 46f.
’
~
45
lamp 40)‘ is providediwith a base 42)‘, which in
x The re?ector Mi is identical with the re?ector‘
cludes laterally extending positioning means 43)’ of the embodiment of Figure 25, shown in detail
also forming part of the means for connecting in Figure 32, with the exception of a slightly dif
the lamp to the re?ector 4|)‘. The positioning ferent positioning of the apertures I15j (corre
_means 43f includes a radially extending ?ange . sponding to the apertures I15) which are pro 50
46)‘ at the rear end of a collar 45)‘ surrounding vided for cooperation with the detents I95.
It will be evident that the assembled lamp 40)‘
the lamp base shell 44f, the ?ange 46f being iden
and holding means 49)‘ may be assembled with
tical with the ?ange 46a of the lamp of the em
bodiment of Figure v13, shown in detail in Figure the re?ector 4|)‘ in a manner analogous to that
already described in connection with the previous 55
1'7, with the exception that the compound aper
embodiments, it being noted that as the lamp
tures I01)‘, I08)‘, I09f of the lamp ?ange 46f, in
stead of having their seat portions I43)‘ disposed
?ange 46)‘ is passed through the re?ector, the
in radial alinement with the axial projections - spring arms I94 will bear against the rear faces
I05)‘, (as is in the case of the seat portions I43, of the end ?anges I23)‘, I24)‘, I25f of the re?ector
with respect to the. projections I05), they have as the assembled‘ lamp and holding means are 60
their seat portions I43,f disposed a predetermined moved axially frontwardly, the arms being ?exed.
amount counter clockwise from the radii definingv
the axial projections I05f.
The holding means 49f includes a cylindrical
shell 50)‘ of a size such as described in the em
Rotation of the assembled lamp andholding
means, in a clockwise direction as viewed from
the rear of the re?ector causes the detents to
ride onto the rear faces of the end ?anges I23)‘, 65
bodiment of Figure 42, and at the-front end ofv ‘ I24)‘, I25)‘ and continued rotation causes the de
this shell is provided an annular radial ?ange tents I95 to snap into the apertures I15)‘, bring-.
I90, here shown as having three radial projec
ing the'parts to the position shown in Figures _'
tions I9“, I92, I93 unequally circumferentially
spaced, the radial projections I9I, I92, I93 being
in turn provided at their ends withv circumfer
entially extending resilient arms ‘I94, here shown
as of equal length. The circle de?ning. the pe
ripheral margins of the arms I94 is here shown 1
as equal in diameter to the circle de?ning the
47, 51, and'52.
,
It will be evident that when the parts are in 70
this assembled position the ?laments (not shown)
of the lamp40)‘ will be at the desired predeter
mined position with respect to the re?ector.
With ‘respect to all of the embodiments herein
before described, while the preferred inode of as 75
2,1 17,758
sembly is as has been set forth, that is, by ?rst as
sembling the lamp and holding means and then
assembling the assembled lamp and holding
means with the re?ector, it will be apparent that
the lamp and holding means need not be ?rst
assembled with each other but the lamp may be
positioned at the front of the re?ector'and the
holding means at the rear thereof and then the
connector pins of the'holding means connected
'10 to the lamp ?ange, as will be obvious,‘ to bring
the lamp and reflector and holding means to the
same ?nally assembled position, as already de
scribed in connection with each embodiment.
From the foregoing it will be apparent to those
skilled in the art that the illustrated embodi
ments of my invention provide new and improved
electric lighting devices and units, readily and
conveniently constructed and assembled, and ac
cordingly, accomplish the principal object of my
invention. On the other hand, it also will be ob
vious to those skilled in the art that the illus
trated embodiments of my invention may be va
between said mounting projections and rotated,
while said engaging parts are in engagement with
said lateral extension, to bring said outward
projections into abutment with said mounting
projections.
5
4. In combination: a mounting having an ap
erture; a plurality of projections‘ extending radi-f"
ally inwardly from the margin of said aperture;
an incandescent electric lamp having base-means
provided with a lateral extension comprising a 10
plurality of circumferentially spaced radially
outwardly extending projections abutting said
mounting projections; said lateral extension
havinga plurality of circumferentially spaced
apertures; holding means, having parts engag- l5
ing said lateral extension, said parts extending
through said apertures in said lateral extension
and being radially within the locus of the radi
ally inner margins of said mounting projections,
constructed and arranged to press said lateral 20
extension against said mounting; and said lat
eral extension being so constructed and arranged
and my invention is not limited thereto.
projections.
_
1. In combination: a mounting having an aper
ture; a plurality of projections extending radially
inwardly from the margin of said aperture; an
incandescent electric lamp having base-means
provided with a lateral extension constructed and
arranged to abut said projections, said lateral
extension having a plurality of apertures; and
5. In combination: a mounting having an ap- 30
erture; a plurality of projections extending radi
allyinwardly from the margin of said aperture;
an incandescent electric lamp having base-means
provided with a lateral extension constructed’
and arranged to abut said projections; said lamp 35
having contact means; ‘and holding means car
holding means, having parts extending through
rying contact means cooperable with said lamp
contact means, said holding means having parts
said apertures in said lateral extension and en
‘engaging said lateral extension, said parts being
gaging said lateral extension, said engaging parts
being disposed radially inside of the locus of the
radially inner margins of said projections, said
holding means being constructed and arranged
to press, said lateral extension against said
disposed radially inside of the locus of the ra- 40
dially inner margins of said projections; said
holding means being constructed and arranged
through the intermediation of said engagiri'g
parts to press said lateral extension against said
mounting.
mounting.
2. In combination: a mounting having an ap
erture; a plurality of projections extending radi
ally inwardly from the margin of saidaperture;
an incandescent electric lamp having base-means
provided with a lateral extension constructed
and arranged to abut said projections; and hold
ing means, having parts extending in a direc
tion transversely of said lateral extension engag
ing said lateral extension, said engaging parts
‘ being disposed radially inside of the locus‘of the
radially inner margins of said projections, said
holding means being constructed and arranged
to press said lateral extension against said
mounting.
65
s
binations than those illustrated, without depart
ing from the spirit of my invention, or sacri?cing
all of the advantages thereof, and that accord
ingly, the disclosure herein is illustrative only,
I claim:
60
\
with respect to said aperture that said outward
projections may be inserted through the spaces
between said mounting projections and rotated, 25
while said engaging parts are in engagement
with said lateral extension, to bring said outward
projections into abutment with said mounting
riously changed and modi?ed, or features there
of, singly or collectively, embodied in other com
45
11
‘~,
“
3. In combination: a mounting having an ap—
erture; a plurality of projections extending radi
ally inwardly from the margin of said aperture;
an incandescent electric lamp having base~means
provided with a lateral extension comprising a
plurality of circumferentially spaced radially
outwardly extending projections abutting said
mounting projections; holding means, having
parts engaging said lateral extension, said parts
being radially within the locus of the radially
inner margins of said mounting‘ projections,
constructed and arranged to press said lateral
extension against said mounting; and said lat--v
eral extension being so constructed and arranged
with respect to said aperture that said outward
75 projections may be inserted through the spaces
~
6. In combination: a mounting; an incandes
cent' electric lamp having a bulb provided with
a base having a lateral extension, said base hav
ing contact means; said mounting having an
aperture of suf?cient size to permit passage of 50
said bulb, and said lateral extension abutting
said mounting radially outside of said aperture;
said lateral extension having a plurality of ap
eratures; removable contact means cooperable
with said lamp base contact means; and hold- 55
ing means, including connector portions extend
ing through said "apertures in said lateral ex
tension, constructed and arranged to hold said
lateral extension‘ in abutment with said mount
ing and to hold said removable contact means 60
in cooperative relation with said lamp base con
tact means.
,
'
7. In combination: mounting means; an in
candescent electric lamp having a bulb provided
with a base having a lateral extension; said 65
mounting means having an aperture of su?‘i
cient size to permit passage of said bulb, and
said lateral extension abutting said mounting
means radially outside of said aperture; said
lateral extension having a plurality of apertures; 70
holding means for receiving and holding said
lamp separately from said mounting means; said
lamp and said holding means comprising coop
erating connecting means including connector
portions extending through said’ apertures in 75
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