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Патент USA US2110130

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March 8, 1938.
-
H. C. DOANE E-r AL
2,110,130
HEADLIGHT BULB MOUNTING
Filed Oct. 50, 1953
55
/4
5/
V
Patented Mar. 8,Y 1938
2,110,130
UNITED STATES PATENT' OFFICE
2.11am
nnapisonr BULB uoUN'rnvG
Harry C. Doane. Flint, Mich., and Frank E. Pres
cott ,and Clarence A. Michel, Anderson. Ind.,
asslgnors, by mesne assignments, to Kingston
Products Dorporation, a corporation of Indiana
Appiicáuón october so, 193s, semi No. 695,776
'20Claimn (ci. _24o-41)
This invention has to do with a mounting for
,incandescent lamps equipped with locating rings
or other devices to permit greater accuracy in
location of the illament in headlamps or other
5 apparatus. The object oi.' the invention is the
provision oi’ a mountingfor lamps of this type
which will permit insertion of the lamp in the
same simple way as in the conventional bayonet
Our invention consists in securing the lamp in
the reflector or other _support in so simple a
manner that the car user need but insert the bulb
in position and give it a partial turn to secure
it in place. The preferred construction consists
oi' a vholder 20 in the form of a cup-shaped
stamping having an out-turned annular ilange
2i within which ls mounted an insulating disc
slot mounting, that is, simply by inserting the> 22 carrying a contact or contacts 2l and yield
10 lamp in the opening in the reflector or other ingly pressed outwardly by means of a spring 28
support, engaging it with securing means, prefer
which may encircle the conductor or conductors
ably in the form of pins carried by the support, leading to the contacts. The disc 22 is provided
and then securing the' lamp in position by giv
with a projecting portion 23 engaged in a slot
ing it a partial rotation.
In 'the drawing: `
Figure 1 is a vertical section showing an ln
candescent lamp with a locating ring mounted
by means ci our preferred form oi' mounting.
Figure 2 is a rear view of the reilector which
20 Supports the bulb.
’
10
28 in the cup, to prevent rotation. as well as to
prevent the disc from accidentally slipping out 15
'of the cup when the bulb is not in place.
J
The means for mounting the contact holder on
the support consists _oi' a number of circumfer
entially spaced pins 38 having enlarged conical
heads 32` provided with pilot extensions 33, `the
Figure 43 is a perspective view of the assembly heads 32 being seated in the slots I8 in the re 20
used to hold the bulb in the reflector and to sup - ilector. The pins pass through apertures in the
ply it with current.
iiange 2l of the member 20 and are secured there
Figure d is a perspective view showing the bulb to by heading over their ends at 3l. Springs 38
25 with its locating ring.
surrounding the Shanks oi the pins, urge the 25
Figure 5 is a fragmentary view showing a modi
cup away from the reilector. For convenience
` ilcation of the washers shown in Figure 3.
in assembly we have shown the lowermost-pins
Figure 6 is a fragmentary longitudinal section 30 connected adjacent their conical heads 32
through a somewhat modified form of assembly. with a washer St, while a single _washer 3l' is
v30
Figure 7 is a fragmentary view showing the secured to the other pin ln like manner. ’I'he
30
parts oi' Figure 6 disassembled.
‘
washer 34 facilitates assembly by holding two oi.'
In the drawing, l0 indicates the base of an in
the pins in proper position for engagement with
candescent lamp which may be provided with
one or more ñlaments as is common in headlight
35 ing practice. The base "I0 is provided with a
locating ring i2 having bayonet slots i4 formed
' therein. The bulb is adapted to be mounted in a
the slots i8.
f
,
The washer 36 preferably is provided with a
ñange 35 to engage the outer annular wall of the 35
depressed portion it of the reilector.
Figures 2 and 3 taken together show the parts
before assembly with the reflector. It will be
reilector i5 having a depressed portion I8 aper
tured atti to permit vg'saiisage of the base of the apparent that this assembly is accomplished by
bulb. _The locating ring i2 is adapted to seat in seating the conical heads inthe outer ends oi' the
the botten; or the part I8, as shown. «Slots t8 - slots i8, and to do this it is necessary- to tilt the 40
extend voutwardly from the aperture il tol re
pins slightly inwardly toward they reilector axis,
ceive the bulb' securing means; as hereinafter to engage the conical heads with the inner ends
described.
oi’ the slots. They thereafter seat in the outer
It will be understood that the locating ring i2 ` ends of the slots i8, and, oi course, _when the 45
is secured to the base I0 in accurate relation to lamp is inserted, it prevents their escape from
the @lament This avoids` errors which -coin
the slots. With this wembly made, to mount the
monlyîoccur :ini conventional lamps by reason of lamp in the headlamp it is necessary >only to in
improper location oi the illainents in the coul-se sert the lamp with the enlarged portions of :slotsv
ci manufacture. With the filaments accurately i4 over the pins “,{whereupon the lamp may be
located with respect to the ring i2,l and the ring rotated to seatl the heads I2 in the smaller ends 50
t2 accurately located in the reilector by seating of the slots.` ’
A
"
inthe depressed portion I 6, it is apparent that
Pilots 33 make it easier to efi'ect engagement
the filaments are positioned in the reñector with between the slots H and the pins, and prevent
'extraordinary accuracy.
Y
the lamp from being inserted in a cocked position.
2
2,110,130
tral aperture and provided with apertures adapt
tion in that in place of washers 3l, 34', we have
shown a >single annular washer 40. With this
ed to register with the smaller apertures in the
reflector, contact carrying means provided with
apertures adapted to be alined with the smaller
apertures in the reflector and locating means,
connecting means extending through said sets of
alined apertures connecting the lamp and re
iiector and contact carrying means, resilient
‘arrangement it is necessary to provide a slot 4i to
receive one oi’ the pins, so that the pins still may
be bent inwardly in assembling the parts to the
reiiector.
,
adapted to seat in the reilector adjacent the cen
In Figure 5 we have shown a slight modiiica
`
In Figures 6 and l'I we have shown a further
modiiication, in which the pins 30 are detachably
connected with the flange 2| on the cup-shaped means- between the contact carrying means and
' holder 2l. This makes it possible, if desired, to vreiiector adapted to apply tension to said con
dispense with the washers 3l, 34', and 40. With necting means to cause the latter to hold the
locating means in engagement with the reñector,
this construction it is necessary to provide key
hole slots 50 in the bottom of the depression I6 and a contact associated with the contact carry
ing means adapted to engage a contact on the
in the reflector, and corresponding key-hole slots
15
lamp base.
Elin the flange 2l. 'I‘his iiange is likewise pro
3. -The combination of a reflector having a
videdwith opposed depressions 54' extending at
an angle to the slot 52 to receive the heads of ‘ central aperture and a plurality of smaller aper
the pins 3d.
20
'
tures arranged around the central aperture, a
lamp having a base adapted to be inserted in the
v
With this construction the holder 20 is assem
central~ aperture, locating means secured to the
base adapted to seat in the reñector adjacent
the central aperture and provided with apertures
adapted to register with the smaller apertures
bled with the reflector by passing the pins 3@
through the slots 50 in the reilector, slipping the
~springs 36 .over them, and then inserting the pins
through the slots 52 in the flange 2i of the hold
25 er 26, and rotating the pins until their heads
seat in the depressions 5€. Obviously, if desired,
the washers 3_4, 34', or 4G, may be used with this
construction.
in the reñector, a contact carrier provided with
apertures adapted to be alined with the smaller
apertures in the reflector and locating means,
pins extending through said sets of alined aper
tures and connecting the lamp and reiiector and
'
While we have shown‘and- described certain
30 forms -which our invention may assume, it will
contact carrier, springs surrounding said pins be
be understood that this disclosure is illustrative
only, and that our invention is not limited there
to.;
We claim:
35
1. The -combination of a reilector having a
tween the reflector and contact carrier holding
the locating means in engagement with the re
ñector, and a yieldingly mounted contact as
sociated with the carrier adapted to engage the
contact on the lamp.
4. The combination of a reñector having a de
pressed portion at its` apex provided with a cen
tral aperture and with a plurality of smaller
central aperture and _a plurality of smaller aper
tures arranged around the central aperture,`-a
lamp having a base adapted to be inserted in the
apertures arranged around the central aperture,
central aperture, locating means secured to the
40 base adapted to seat in the reiiector adjacent the `
central aperture and provided with circumferen
tially extending 'slots having large ends and small
ends adapted to be successively brought into reg
istration 'with the smaller apertures in the re
45 :iiector upon rotation of the lamp about its axis,
contact carrying means provided with apertures
adapted to be alined with the smaller apertures
in the reñector and the slots in the locating
means and provided with a _contact adapted to
50 engage aV contact on the base of the lamp, pins
extending through said sets of alined apertures
and connecting the lamp and reflector and con
tact carrying means, resilient means cooperating
with the contact carrying means and reilector
55 to apply tension to said'pins to cause the latter
to hold >the locating means in engagement. with
the reflector, the ends of the pins which engage
the slots being provided with heads tapering
from the diameter of the shank to a diameter in
60 excess ofl the diameter of the small ends of the
Y slots inthe locating means but less- than the di
ameter of the _large ends of the slots, said- heads,
when the parts are assembled with the reñector
and the lamp isv removed therefrom,- -normally
65
protruding beyond. the adjacent surface o! the
reiiector to vpermit ready engagement of the pins
l by -the slots! in` the locating means of the lamp,
whereupon the lamp may be rotated to cause the
-'pins vto seat in the smallends of the slotsvand
hold the parts _assembled._
»
-
30
a lamp having a base adapted to be inserted in
the central aperture, a locating ring secured to
the base adapted to be seated in said depressed
mportion of. the reilector and provided with cir
cumferentially extending slots having large ends
and small ends adapted to be successively'
brought into registration with the smaller aper
tures in the reiiector upon rotation of the lamp
about its axis, a lcontact carrier having an an
nular iiange provided with apertures adapted to
be alined with the smaller apertures in the re
50
ilector and the slots in the ring, pins extending'
through said sets- of alined apertures, and con
necting the lamp and reflector and contact vcar
rier, the ends of the pins which engage the slots
having» heads of less diameter than the large ends 55
or the slots >but of greater diameter than the
small ends of the slots, resilient means between
the contact carrier and reñector adapted to apply
tension to said pins to cause them to clamp the
locating ring in the depression in the reflector, 6.0
and a contact yieldingly mounted within the con
tact carrier adapted to yieldingly engage the
contact on the'lamp.
5.. The combination of a reflector having a de
pressed portion at its apex provided with a cen
65
tral apertureand with a plurality of smaller aper
tures arranged .around the central aperture, a
lamp having a base adapted to be inserted in the
central aperture, a locating ring secured tothe
' _base adapted to be seated in said depressed por
2. The combination of a reilectorhaving’a cen
tion-of the reñector and provided with circumfer-~
' having va base adapted tobe inserted in the cen
_registration with~ the smaller apertures '_in the-
70
tral aperture and a plurality o_i! smaller apertures » entiallyA extending slots having >large ends and`
' arranged around the central aperture, a lam'p small ends adapted to be successively brought into
'mi sperme, locating nieam'sewrçd to the base
reflector upon rotation. ofthe lamp about .its axis, 75
3
2,110,130
a contact carrier having an annular ñange‘pro
vided with apertures adapted to be alined with the
smaller apertures in the reflector and the slots
in the ring, pins extending through said sets of
alined apertures, and connecting the lamp and re
iiector and contact carrier, the ends of the pins
which engage the slots having heads of less diam
eter than the large ends of the slots but of greater
diameter than the small ends of the slots, resil
10 ient means between the contact carrier and re
- ñector adapted to apply tension to _said pins to
cause them to clamp the locating ring in the de
pressionv in the reflector, a contact yieldingly
mounted within the'contact carrier adapted to
pressed portion at its apex provided with a cen
tral aperture and with a plurality of smaller aper
tures arranged around the central aperture and
communicating therewith, a lamp having a base
adapted to be inserted in the central aperture, 5 .
a locating ring' secured to the base adapted to
be seated in said depressed portion of the reflec
tor and provided with circumferentially extending
slots having large ends and small ends adapted
to be successively brought into registration -with 10
the smaller apertures in the reilector upon »rota
l'tion of the lamp aboutrits axis, a cup-shaped con
tact carrier having an annular flange provided
with apertures adapted to be alined with the
15 yieldingly engage the contact on the lamp, and
smaller apertures in the reñector and the slots in
annular means connecting the free‘ends oi a plu-~
the ring, pins extending through said sets of
alined apertures, said pins being headed atop
positè ends Vs’o as to connect the lamp and reiiec
rality o! said pins for holding them in properly
spaced relation to engage a plurality of said sets
`of- apertures.
‘
6. The combination of a'reñector having a de
„ pressed portion at its apex provided with a cen
tral aperture and with a plurality of notches ex
tending from the central aperture, a lamp having
a base adapted to be inserted in the central aper
25 ture, a locating ring. secured to the base adapted
to be seated in said depressed portion of the re
ilector and provided Awith circumferentially ex,
tending slots having large ends and small ends
adapted to be successively brought into registra
30 tion with the notches in the reflector upon rota
tor and contact carrier, the heads of the pins
which engage the slots being of less diameter 20'
than the large ends of the slots but of greater
diameter than the small ends of the slots, coil
springs surrounding the pins between the reflec
tor and contact carrier and serving to yieldingly
clamp the lamp locating ring in the depression in
the reiiector, a contact yieldingly mounted with
'in the contact carrier adapted to engage a con
tact onv the lamp, and means associated with a
plurality of said pins for holding them in proper
ly spaced relation to engage a plurality of said. '
tion of the lamp about its axis, a cup-shaped con#
sets of apertures.
tact carrier having an annular flange provided i
9. In a i-lxed
bination with a
a central recess,
iiange engaging
with apertures adapted to be alined with the
notches inthe reñector and the slots in the ring,
headed pins extending through said sets of aimed
openings and connecting the lamp and reflector
and contact carrier, the heads being of less diam
eter than the large ends of the slots but of great
-er diameter than the small ends of the slots, re
,
focus lamp assembly, the com
concave reflector provided with
and a lamp having a positioning
said recess and provided with a
plurality of segmental slots in said ilange, of a
contact carrier detachably engaging the rear of
said reflector, said carrier comprising two rela.
tively movable members, a spring between said
silient means between the contact carrier and re- ~ members, and headedpins connecting said mem- t
iiector adapted to apply tension to'v said pins to
cause them to clamp the locating ring in the de
bers andìlimiting the relative movement thereof
under"th_e tension of said spring, the forward
pression in the reflector, and a contact yielding
ly mounted within the contact carrier adapted t
ends of said pins being adapted to pass through x
yieldingly engage a contact on the lamp.
tive engagement with the slots in said iiange.
'
’
'1. The combination of a reflector having a de
pressed portion at its apex provided with a cen
-tral aperture and with a plurality oi’ smalleriaper
tures arranged around the central aperture and
50 communicating therewith, a 'lamp having a base
adapted to be inserted in the central aperture, a
-locating ring secured to the base adapted to be
seated in said depressed portion of the reñector
and provided With circumferentially extending
55 slots having large ends and small ends adapted
to be successivelybrought intoregistration with
the smaller apertures in the reñector upon rota
tion of the lamp about its axis, a cup~shaped con
tact carrier having an annular ñange provided
60 with apertures adapted to be alined with the
, smaller apertures in the reñector and the Slots in
the ring,pinsextending through said sets ofA alined
apertures, said pins being headed at opposite
ends so as to connect the lamp and reñector and
65 contact carrier, the heads of the pins which en
gage the slots being of less diameter _than the
large ends ofthe slots but of greater diameter
than the smallends of the slots, coil springs sur
` rounding the pins between the reñector and con
70 tact carrier andgserving to -yieldinglií clamp the
lamp locating ring in the depression in the re
ilector, and a contact yieldingly mounted within
"the contact carrier adapted to engage a contact
registering apertures in said reiiector intoopera->
10. In a lamp assembly, the combination of a '
concave reñector, a lamp having a securing iiange
engageable with said reflector, a contact carrier
engaging the reary of said reiiector, said carrier
comprising' two relatively movable members, a
spring between said members, and headed pins _
connecting said members and limiting the rela-Y
tive movement thereof under tension of said
spring, the forward ends of said pins being adapt
ed to pass through said reiiector into~ operative 55
engagement with said ñange, thereby holding
said carrier and said lamp in firm engagement
with said reflector.
11. In. a ñxed focus lamp assembly, the com
bination with a concave reilector provided with
a central recess, and a lamp having a positioning
flange engaging said recess and provided with ,a
plurality of segmental slots in said iiange, of
pressing means, detachably engaging said re
flect'or in rear thereoi',-for pressing said ñange 65
into said recess, said pressing means comprising
two relatively movable members, a spring be
iween said members, and headed pins connecting
s iid members and limiting the relative movement
Ythereof under the tension of said spring, the for
ward ends of said pins being adapted _to pass
through registering apertures in said reflector
into operative engagement withv the slots in said
ilange.
on8.the
The
lamp.
combination of a reñector having a de
76A
so
i
‘Í
.
12. In a lamp assembly, the combination of a
4
2,110,180
concave reflector, a lamp having a securing iiange
engageable with said reflector, pressing means,
engaging the rear of said reiiector, said> pressing
means' comm'ising two relatively movable mem
bers, a spring between said members, and headed
pins connecting said members and limiting the
relative movement thereof under tension of said
spring, the forward ends of said pins being adapt
ed to pass through said reñector into operative
engagement with said flange, thereby holding
said means and said lamp in iirm engagement
`on said base, adapted to be seated in said de
pressed portion of said reiiector; said ring being
provided with circumferentially extending com
pound apertures having large portions and small
portions spaced circumferentially; said compound
apertures being so disposed that their circumfer
ential locus is adapted to intersect said smaller
apertures; and means cooperable with said bulb
to connect the same to said reiiector and to make
electrical 'contact with said bulb, said means in 1o
cluding an annular flange having associated
swingably carried by said carrying member, nor
therewith parts extending through said smaller
apertures and said compound apertures, means
for applying Vtension to said parts to cause said
parts to clamp said locating ring in said depres 15
sion in saidI reflector, ,and a `contact adapted to
mally extending in a direction transverse to the
engage a contact on said bulb.
general plane of >said carrying member; said pro
17. A unitary device i’or connecting an incan
descent electric lamp to a mounting, comprising:
a carrying member; a plurality of projections car
with said reflector.
n
~
13. A unitary device for connecting an incan
descent electric lamp to a mounting, comprising: `
15 a carrying member; a plurality of projections
jections havinglateral extensions at their free
20 ends; and resilient means for biasing said pro
jections into a position in which they have said
>normal direction, and i'or biasing said lateral ex
tensions away trom said carrying member.
14. In combination: a reiiector having a cen
"25 tralaperture anda plurality o! smaller apertures
varranged around said central aperture; a lamp
ried by said carrying member and extending
transversely to the general plane of said carrying
member; said projections each having a lateral
extension at its free end; a washer member on
`said projections between said lateral extensions 25
bulb having a base adapted to be inserted in said
and said carrying member; and resilient means
biasing-said washer member toward said lateral
central aperture ; locating means provided on said
extensions.
base, adapted to seat in said reiiectoi:` adjacentl
said central aperture; said locating means being
2o
'
f
18. A unitary device for connecting an incan
descent electric lamp to a mounting, comprising: ao
provided with circumferentially extending com-` . a _plurality oi’ pimns each having a shank and a
pound apertures having large portions and small head, a carrying member having a plurality of
portions spaced circumferentia'lly; said compound apertures through which said Shanks are respec
apertures being so disposed that their 'circum-Y tively disposed so that said pins extend in a direc
rying member; a washer member on said Shanks
to connect _the same to said reñector and to make
between said carrying member and said heads;
electricalA contact with said bulb, said means in-_
cluding parts extending through said smaller ap
40 ertur'es and' said compoundiapertures, means for
applying tension to said parts tocause said parts
to hold said. locating means in engagement with
said reiiector, and a contact adapted to> engage
4a, contact ón said bulhltid parts being’ Provided
45
tion transverse to the general plane of said car 35
ferential locus is adapted to intersect said smaller
apertures; and means-cooperable with. said bulb
with enlarged'heads normally protruding beyond
the yadjacent surface of said reñector and adapt
-ed to
through said large portions but not
through said small portions, said enlarged heads
including means whereby, when said large por
resilient means acting on said washer member
for biasing said heads away from said carrying
member; and means for hunting movement of 4o
. said heads away from said carrying member.
` '
19. In combination: an incandescent electric
lamp having a base, and having an apertured
lateral extension on .said base; an apertured
mounting for said lamppand a permanently inte 45
gral unitary device, constructed and arranged to
detachably connect said lamp to said mounting;
said device including a plurality-of pins con
structed and arranged to extend' through said
tions'are passed over said' enlarged heads and apertured mounting and through said apertured 5o
said bulbis rotated, said heads will become seated -lateral extension onl said base, each pin having
in said small portions.
-
15‘ In combinationrßa reñector having a cen
a shank and each also having a head constructed
and arranged to engage said lateral extension on
tral aperture and a plurality of smaller apertures said lamp base; said unitary device including
Aarranged around said central aperture; _a lamp _ also a Vcarrying member for said pins having a 55
bulb having a base adapted to be inserted in plurality of apertures through which said Shanks
said central'aperture; locating means provided are respectively disposed so that said pins ex
on said base, ~adapted to> seat in> said reflector tend transversely to the general plane of said
_adjacent` said. central aperture; said locating mountins, said unitary device including also re
means being provided with apertures adapted to silient means- constructed and arranged to press
register with said smaller apertures; and means .said heads against said lateral extension -on said
cooperable with .said bulb to connect the same to lamxrbase to press said lateral extension against
said reflector and to make electrical contact with said mounting; and said unitary device and said
said bulb, said means including parts extending» mounting being relatively so, constructed and ar-"
through said registering apertures, means for ranged that said device may be applied to and 65
applying tension to said parts to cause said parts separated from _said mounting as a unit, without _
to hold said locating means in engagement with riisassemblyotv said univ
device.- ,
Y '
,
said reiiector, and a'contact adapted to engage
20. In combination:
incandescent electric
Ea contact on said bulb. f
"
lamp
a base; an apertured mounting '-for
said lamp;
i'cr connecting said lamp to said 70
` 16.` In combination: a reiiector
_aide
pressed portion >at its apex provided with 'a cen- - mounting, including. an apertured lateral exten
a carrying member, a
aperture and with a plurality of smaller ap sion on said
erture arranged around said central aperture; plurality oi' projections »unitarily carried by’ said
carrying member and so carried that said proje'c- '
_
alampbulbhaving ab'aseadapted tobeinserted
in said central
slocating ring provided vtions _extend transversely to the general plane of --75
2,110,190
_
‘S
said mounting through said aperturéd mounting member, so constructedl vand arranged that said
i and'through said apertured'iateral extension on
carrying member is biased away from said mount
said _lamp base, said projections each having a
lateral extension at its free end .constructed and
ing and said washer member is biased toward said
arranged to engage said extension on said lamp
base, a washer member on.said projections be
lamp base against said mounting.
tween said carrying member and said lateraiex
tensions on said- projections, and resilient means,_
, acting on said washer member and said carrying
mounting to press said lateral extension on said
HARRY C. DOANE.
FRANK H. PRESCOTI‘.
CLARENCE A. MICHEL.v
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