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Патент USA US2137092

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Nov. 15, 1938.
Filed Feb. 12, 1956
4 Sheets-Sheet l
Nov. 15, 1938.
Filed Feb. 12, 1936
4 sheets-sheet 2
NOV. 15; 1938;
Filed Feb. 12, 1956
\ 4 Sheets-Sheet 3
Nov. 15, 1938“
Filed Feb. 12, 1936
4 Sheets-Sheet 4
Z.” “a; do;
. mm,”
Patented Nov. 15, 1938
. ' (‘A
2,137,092 ’
' Clarence A. Michel, Howard ‘G. Mead, and Robert“ .
. Winkelmeyer, Anderson,- Ind.-, assignors to Gen- 7
eral Motors "Corporation, Detroit; Mich‘, ‘a cor
- poration of Delaware 7'
aptua?onsebrar'y 12,v 1936, Serial ‘No. 63,500
6 claimsfwl. amt-4L6)
This'invention relates broadly to illuminating
apparatus and more speci?cally :to headlamp
structure .for purposes of illuminating the high
away and. shown insection.
way infront of a moving vehicle.
I3-l3 of Fig.
> ‘
a * Fig. 12 is a partial front. view with parts broken.‘
, Fig. 13 is a sectional view taken on the line.
It has heretofore beenthe general practiceto ‘ ‘ Fig. His a similar view to that of Fig. 11
mount the headlamp, casing of a car so that the showing a further modi?ed form of the inven
same may be moved with respect to the body
or frame of (the vehicle for’ purposes of aiming
Referring ?rst to theform of invention'illus
trated by Figs."1-9,,a thin sheetmetal lamp body
2 has a heavy reinforcing platell Ofth?‘ same
the standpoint‘of assembly and maintaining the jcon?guration supported against the inside sure
proper adjustment to:rigidly secure thejhea'd- .' face of the body; Adjacent each end of the re
lamp outer casingto ‘the body orframe. * .
inforcing plate 4 there are openings 6 vWithin
V the beam in .theproperr driving position.
ever, it has been found advantageous ‘both from
It is therefore an object of our invention to I which are secured suitable nut supporting and
provide a headlamp having a plurality of‘ casings‘,
one within the other, the‘outer casing to be at
tached to the body and the innerfor adjustment
locking members 8 to supportnuts .lliand keep is
the same from turning. Thev body 2 has openings
l2 therein in alignment with the nuts 10 for‘
securing purposes.
It is. a further object of our invention to
20' provide a headlamp infwhich all the necessary
adjustments for aimingnare self-contained.‘
Itis a still further object to ‘provide a head- >
lampin which the self-contained ‘adjustments
A mounting bracket comprising partsl l4 and l6v ‘
at the front and rearyrespectively is'securedto
the body by bolts 18 threadedv into the interior
nuts ill) and having heads 20 on their outer ends.
The .bracket'portions ' l4 and I6 both have ‘at
taching bolts 22: cast therein which are adapted
For a ‘better understanding of the nature and to‘ project through the'member upon which the 25
.objects of our invention, reference isihereby made lamp is to be mounted, in this case the radiator
to the following speci?cation wherein there are shell 24-and the inner reinforcing plate 26. Nuts.
are accessible from outside of the headlamp.
described the embodiments of our. ‘invention
which are illustrated in the accompanying draw
28 holdthe assembly in place by being threaded
on the
The body 2 is of streamline or teardrop shape
Fig. 1 is a longitudinal plan‘of a'headlamp of
with the frontthereof open andgvthe bodyibeing
our ‘invention, , parts being _ broken‘ away and
?anged inwardly as at 30 around the opening.
shown in section.
' Fitting within the open end of the ,body 2 .is'a'sub-v
Fig. la‘i's a section through the side portion of
the headlamp showing modi?ed means for ‘ad
body‘ 32 which is circular, the outer portion dished
.inwardly and the peripherybeing ?anged out
wardly and then forwardly as at“. Secured to
the outwardly ?anged section‘ of the sub-bodyat
spaced peripheral points are a plurality of at-v
2——2 of Fig. 1.
"Fig. 3 is a front viewiof the headlamp with taching ‘pins v‘3t having a‘ small body and an
enlarged head 38. ‘In the ?ange 30 at points
40 the lens and its supporting ring removed.
Fig. 4 is an enlarged detail sectional view taken 7 adjacent‘ the pinpositions of the sub-body there
justing the beam horizontally.‘ ‘ I
the ‘line
Fig. '2 is a sectional-‘view taken on
on the line 4—4 of Fig. 2. _‘
are provided'openings 40 of irregular ‘shape, one
Figs. 5 and 6 are enlarged‘ sectional views taken
onthe lines 5-5 and 6--6'of Fig. 1. .
Fig. 7 is a detail'perspective view of a re?ector
'- "
Fig. 8 is a detail perspective view of the spring
clip for tilting the re?ector.
V ,
Fig. 9 is a front viewof the innercasing.
Fig. 10 is a horizontal section taken through-a
headlamp and showing a modi?ed form of our
rigidly secured to the'?ange by rivets 44. - Itlwill
’ thus be evident that to assemble the sub-body‘ on
the body. it is only necessary to apply the pins
36 to theopenings 40 sowthat the heads 38‘ will
go through the large end and then rotate'the 50
sub-housing which will bring the small shank into
the elongated slots and where-the spring 42 hasv a
depressed section 46 which. engages the ‘head [38’
Fig. 11 is an enlarged partial sectional view
55 taken on the line ll--Il-of Fig. 10. v
end beingenlarged and round‘ and the remainder
being an elongated slot. Projecting behind these
openings 40 are small spring steel members 42 45
to maintain it in the end of the slot and keep
theisub-body secured to the body.
2 .
The ?ange 34 on the sub-body carries in a
pressed-in groove 35,- U-shaped in cross section,
a deformable seating gasket 48 which is adapted
to press against the inner surface of a lens 58
that is supported on the front of the housing
by a conventional .clamping ring 52 engaging
reinforcing plate 4 is a lug I02 which extends
toward the interior of the lamp housing. Near
the end of the lug is a ?anged opening I04 which
supports one end of an adjusting rod I06 the
end of which contacts with the rear portion 88
of the strap 84 and pushes it back and forth to
the ?anged edge of the body.
any desired position.
horizontal axis for aiming purposes. The spe
ci?c structure of the suspension will now be set
forth. On one side of the horizontal axis of the
sub-body 32 is attached a long strap 58 by a
plate 4, the rear wall of which is vertical and has
an opening IIII therein through which the op
15 rivet 58.
Two inturned lugs 60 on the strap en-;
gage the walls of the sub-body‘to‘assist in the
supporting action and to prevent the strap from
rotating about the rivet as a pivot. ' This con
struction isv best shown in Fig. 6.
The strap
20 projects'forwardly and its extreme portion is
made narrower than the main body as at 62 and
an elongated opening 64 is provided near its end.
This provides two shoulders 66 at the change in
section and a spring member 58 having a collar
25 '10, which is adapted to be sprung over the por
tion 62 and press against the shoulders 66, has
two diverging legs ‘I2 which are adapted to press
against the inner face of a vertical ?ange ‘I4 on
the edge of the re?ector 54. The periphery of the
30 re?ector is then bent back uponitself to form a
?ange ‘I6 in the plane of the axis of the re?ector.
The end of the portion 62 extends through an
opening ‘I8 in the vertical ?ange ‘I4 and a re
taining lock BI! is adapted'to be inserted through
35 the opening I54 and then turned with its reduced
mid-section 82 in the slot 64 and pulled back, its
shape being such that it will conform to the
shape of the re?ector ?anges and locks the strap
to the re?ector edge, the springs ‘I2 holding it
40 tightly in place. This will allow the re?ector to
pivot about this point.
Diametrically opposite the pivotal support just
described, there ‘is provided a similar strap 84,
the forward portion of which is identical with
45 the strap 56 having a narrower portion 62 pro
jecting through the ?ange ‘I4 in an opening ‘I8
with a retaining member 80 to prevent the tongue
from being withdrawn through the opening and
spring legs ‘I2 to press against the inner surface
50 of the ?ange to keep the retaining member in
close contact.
The main body of the strap 84 ‘extends rear
Wardly through an opening 3? in the sub-body 32
to form portion 86, is then bent at substantially
55 right angles upwardly as at 35 and‘ then for
wardly again as at 9B, the foremost end of the
latter extending back through another opening
89 in the sub-body. The portion 86, which lies
parallel to one side of the sub-body, is movably
60 secured thereto by a rivet 92 rigidly secured to
the sub-body and extending through a slot 94 in
the strap‘portion 86, the end of .the rivet carrying
a small disk 95 to prevent the strap from slipping
A coil helical spring 98 surrounds the portion
96 of the strap behindthe sub-body, one end of
which presses against the rear facerof the sub
body adjacent the opening therein through which
7,0 :
To the rear of the lug I02 ‘there is an opening
I07 in the shell 2 through’ which extends an
angular pressed-out portion I08 of. the inner 10
10 it may be rotated about either‘ a vertical ora
i .
Within thev hollow portion of the sub-body is
suspended a re?ector 54 in such a manner that
the portion 90 projects and‘ the inner face of
strap’portion 88 and against vtwo lugs I00 pressed
from ‘the strap. >Therefore the strap 84 may be
moved back and forth relative to the sub-frame,
the spring tending to keep it to the rear and
therefore keep the re?ector pulled around on this
side. Pressed from the surface of‘ the inner
posite end-of the rod I I16 projects. , A sheet metal
angular nut locking member H2 is also secured
in the opening IIII1 around the rod and holds 15
nut H4 through which the threaded portion II6
on the rod is applied; On the outside of the por
tion IE8 the rod carries a lock nut H8 and the
‘end of the rod is headed as at I20 and has a slot
therein for adjustment.
In orderv to adjust the re?ector 54 about a
vertical axis the nut H8 is loosened and the rod
I06 rotated in the desired direction which feeds
the rod either forward or back to push or allow
the strap to move under the in?uence of spring 25
98 which moves the inner edge of the re?ector
back or forward. The re?ector of course pivots
about its connection to the strap 56 diametrically
opposite. This gives the horizontal adjustment
and, as is evident from the drawings, this adjustf 30,
ment is made from inside the radiator shell and
access may be had thereto by raising the hood 25.
In Fig. la' is shown a slightly modi?ed con
struction for the strap 84 and‘spring bias there
for. In this form the strap 84’ is secured to the 35;
re?ector as in the previous'case and extends back
into the sub-housing 32, its end being bent atright
angles to form a lug 85; Rigi-dly secured in an
opening in the lug and with its main axis parallel
to the body of the strap 84’ is a rod 81. The rod
81 extends toward the-rear and through a long
bearing 89 supported in an' opening 9| in the sub
housing 32. This long bearing keeps the motion
of the rod linear and prevents w'obbling upon its
forward and rearward motion. Riveted onto 45
the inner end of the rod 81, is a disk 93>against
which the rod I06 presses as in the former case.
Surrounding the shaft of- the rod 81 behind the
sub-housingis a helical spring 95 which presses
against the rear of the sub-housing and the disk 50
93 to keep the disk in contact with the adjusting
rod I 06. The operation is, of course, the same as
in the previous construction.
In the central part of the re?ector is supported
a conventional socket I22 for a bulb I24.
In the 55
sub-base, to the rear of. strap 56, is an opening‘
which has a rubber grommet I26 therein and in
the reinforcing plate 4 and the side of the shell
is another opening supporting avsecond grommet,
I28. The necessary feed wires I30 are carried to
the rear of the re?ector through these grommets.
Two wires are connected to socket I22 for the
main headlamp and the other wires are con
nected to socket I32 supported in the, upper part
of the re?ector and which carries a small bulb 65
I34 for parking purposes.
, '
In order to ‘rotate the re?ector about. a hori
zontal axis to give the proper vertical adjust
ment of the beam, the apparatus‘ best shown in
Fig. 2 is provided. In the lower portion of the 70
sub-body 32 there is provided a pressed-out por—
tion I36 which is roughly V-shap'ed. In the two
short ends of this, portion area pair of aligned
openings I38 and an adjusting screw I48 extends
through these two openings and is freely rotat-‘
The bottomportion of the groove,I80 carries a
seriesoi headed-3 rivets I84 which are circum
able ‘.therein. - : .The: .end; : of .thefscrew .aextending:
rearwardly is threadedlandalnear the end is "an.
opening in which‘ a.cotterpin.-v I42. is. plaeedtoi
ferentially spaced-to normally lie opposite the
hollowed-out portions 110. Therefore in apply
spacingxrn'ember'. I44,.a portion-.of whose=shape> ing the sub-housing to the main body the pins
prevent the screw. from coming. ‘out; ~IAn angled
5.84 ‘are: projected. through the slots I'M, their '
conforms tothe‘shape- of the outerIface' of the
pressed-out portion I36, is in engagement with» heads proceeding into the hollowed-out portion
the .forward;po1'.tion and. then extends .at right: and contacting thersprings H2. The whole sub-l
‘ angles thereto; ., This spacing member has aipair», body. isthenrctated?toward the right asshown
10 of‘ ‘aligned spaced openings I46 thereincthrough: . in Fig. 12'until: the’shaft of the pins lies within.
which the portion of the adjusting screwiniront
of‘v section‘ISEfextends, the‘ head of. the} screw
engagingithelfront.oflthememberaf It
the small end-portion of the slot I'I4, ‘its head’
then preventingran ‘axial. withdrawal of the sub
body from. ‘the main body. This type is knownv
as the bayonet‘ connection. The spring I'IZ
presses against the head" to maintain it in its
7 .On‘the .bodyof the. threaded portionrof the
15 screw. is. a‘ traveling ‘nut I “and extending = from
the nut to the inner faceiof the ‘pressed-out.
‘Positioned within the central opening in the
portionand surrounding the screw is a helical.
spring ‘I00 whose-function itis to keep the head ’ subebody is a ‘re?ector I86 which has an out
of the screwztightlyagainst the spacing member
20 and assistdn feeding the ‘nut along; The under “
wardly and then vrearwardlyj?anged edge I88
whichlis" supported-at the‘ two opposite ends of
surface of». the headcontains. raised portionsto its horizontal axis-by asimil'ar construction to
engage serrations. in ‘ the spacing 'm'ember» IM'IEtoF . that shown’ in the‘ ?rst‘ form of our'invention,
keepa given setting;
~:.Pivotally connected to the travelinginut was
25 a double. strap [52 the ends-oi _WhlChj;DI‘Oj€0IS
the support on one side being identical’with that
shown in Fig. l :at the upper portion of the draw
ing involving the'?xédstrap 56. ‘The opposite.
side‘ is supported by ‘an adjustable strap similar
to strap 84, shownj'inFig. 1 with the exception
that in this case the "rear portion of the strap
5%" extends through an opening'in the sub-body
anddsbent' at right angles toitself as at I89
and the‘ upper endfvthereof' is provided with ‘a
’ apullor apush on the strap which is transmitted '‘ flangedi opening I 96 which is "internallyjthreaded.
forwardly. and engage‘ the lower periphery of»
the re?ector; one end I54’ engaging within‘ the‘
?ange 'I4T'an'd the other i56 around the‘?ange so
that the latter is clamped betweenthetwo. (It
30 Will‘thus be evident that‘? as‘ the screw vIli?iis r‘o
tatedithe nut 148 will move in or out andjexer't _.
toithe ‘re?ector rim atthe' bottom androtates;
the'rre?ector: about an axis through ‘the strap
"In theiouter‘shell of the headlamplglopposite'l ‘
the head of ‘the ‘adjusting ‘screw » M53; ‘is an opener‘
ing I58 through which a- ‘screw driver or other
suitableinstrumént mayYb‘e inserted in orderhi'to
40 rotate the screw; I40 for adjusting purposes; ‘It'fv
will thus‘ be evident that the-re?ector 54 may be
Also securedrigidly 'to the louterl'surface of the
sub~body> H6 is an angled ‘member I92Ihaving
an opening Nit-“in axial. alignmentrwith the
threaded opening I96." Theyforward portion of’
‘the ?anged edge/and ringmembers I64 and I66
also 'have'an aligned“ opening therein for the
insertion of, van adjusting screw I96, the ‘elon
gated'head 1 of which-"extends through‘ ‘this last 40
names, opening and the smallerbody' portion ex‘->
adjusted (forvaiming' either about a horizontall ,7 tehds‘tlintoopening I'MPthethreade‘d end being
or vertical axis without removing any-part" of? threaded through the opening I90‘ and‘ a cotter
the headlamp‘but by‘ merely utilizing a screw
'iBBfbei'ng-‘VappIied to the-innermost end to
45 driver'to-turn either'the adjustingscrew‘ I56. for
prevent ‘entire "withdrawal of’fthe same. There 45
rotation‘ about a‘ horizontal axis = or’by loosening
nutyII8 and then turning‘the'irod lii?rfor .ad
is also aniopening I95 in the base of the} groove "
'I8B/ithi'ough which'thescrew’ I96 may be in
justment about" a vertical‘. ‘axis. lThis'i-i'latter" se‘rtedjor adjusted. Between the two brackets .,
adjustment is ‘accessible by raising theilhood'a'nd- ‘ I39‘ and1I92 the‘ shaft ot the adjusting screw isI
acquiring‘ access'?to the inner-_‘-portion of the
encircledbyiacompressedhelical spring 200, the-3 so.
t'In" the modi?ed form ‘shown in Figs.'10-l3,
purposetof which‘ is to’ force the bracket I89 ‘rear-7E
Wardly and cause the strap 84’! to slide upon its
inclusive,‘"the main‘ body‘ ‘of the headlamp'is
rivet‘ 92v which‘motion is, fof_ course, transmitted
formed of "aff‘presse'd' metal portion I60 of, a-poré
I62. Carried 'circ'umferentiallybn ‘this ?ange I62
is a’ ring member" I66 (the ‘same being secured
through the ‘ring member’ I66’ and is supported
in an‘ angled member‘ I92‘ projected upwardly‘
radiator shell.
'_'I-" ' "
tion‘o‘fametor-car‘, such as. the tender. 'Inthis I . "I'lie=fsl1owing in" Fig.‘ 14 ‘is 7 substantially the 55
pressed-out lp'o'rti‘on there is a ‘vertical circular same'as that shown inYFig'. ‘1-1’ in ‘whichfan ad-‘
openingmaround which thebedy is ?anged as at justing'scr'ew N36 has a head thereon projecting
thereto “byima‘chi'ne screws ‘168- which project‘ irornith'e subélious'ing. I'Hi.f 'Asl'in theformer in-" 60
through the ring andthe flange to be threaded stance: the innermost portion .of the adjusting
7 into a nut I64.
In the ring I66 there is .a series
of circumferentially spaced hollowed-out‘ por
tions I10 within which there are supported strap
springs I12, the outer face of the ring at these
points being in the form best shownin Fig. 12,
screw I96 is ofv smaller diameter and is ‘threaded
for a substantial portion of its length. A strap
M’” is attached to the re?ector at ‘its forward
portion in the same manner as before, the rear 65
ward end of which is bent at an angle as shown
as of irregular outline I14. As in the former in
at 23!! and carries a pin 232 riveted thereto, said
stance, there may be any number of these points pin extending through a bushing 2,34, said'bush
ing being carried in‘ an opening in the rear face
but the preferable number would be three.
A sub-frame member I16 ?ts within the cir~ of the sub-housing I16. Theprojecting portion
cular opening in the main body I61) and has'av of the pin 232 has riveted thereto a vertical plate
?anged edge portion I18. Within this ?anged
edge portion there is provided a circumferential
236 in the upper portion of which is a threaded
opening 238 through which the rearward end of
groove I80 of U-shaped ‘cross section within the adjusting screw‘ I96 projects. .Concentric
75 which is supported a ‘deformable gasket 182., with the axis of the screw I96 and surrounding 75
the portion of smaller diameter between the
plate 236 and the angled member 192 is a helical
spring 246 which assists when the screw is turned
to move the plate 236 back and forth which
‘ action is transmitted through the pin 232 to
the strap 84"’ and'thus moves the re?ector to
its proper position.
In order to provide for the ‘vertical adjustment
ofthe beam in this case, which necessitates ro
10' tating the re?ector about its horizontal axis, the
lower portion of the sub-body is pressed out as
before to form a roughly V-shaped section 262,
the two end portions of which areprovided with
aligned openings 26!.- through which extends a
15 rod 265. Upon the body of this‘ rod; between the
two openings, there is secured‘ a nut‘ 268 against
one face of which is resiliently pressed a hinge
nut 2l6 by an encircling helical spring 2l2, the
opposite end of which bears against the inner
20 surface of the pressed-out portion 262. Pivotally
secured to this hinge nut 2H] is a double strap
I52, as in the former case the ends of the strap
engaging the ?anged edge I68 of the re?ector in
the same manner as previously described.
The portion of the rod 206 extending rear
wardly from the sub-body has an enlarged head
2 l4 having an eye 2 l6 therein in which is adapted
to engage one end of a thin angled rod H8 and
form pi'votal engagement therewith. Secured to
the outer face of the sub-body below the pressed
out portion 262 is an angled‘bracket 220 which
is adapted to carry van adjusting screw 222 of the
‘same construction as the adjusting screw I96.
The inwardly projecting threaded end of the
screw 222 carries thereon a driving nut 224 to
which is 'pivotally secured the, opposite end of
the thin rod M8. The forward portion of the
adjusting screw 222 of course projects through
the ?anged edgein order to be accessible.
A conventional headlight lens 226 supported
by a split rim 228 upon the forward face of the
housing engaging the ring I66 in any well known
manner, closes the front of the assembly by
pressing against the deformable gasket I82. In
this form of the invention it is therefore evident
that in order to adjust the aiming of the re?ector
either about a horizontal or vertical axis it is of
course necessary to remove the lens and then
‘ the two adjusting screws I96 and 222 will be
'501 accessible to tilt the re?ector by merely turning
the same with a screw driver or other similar
We claim:
1. In a headlamp having a lens and a casing
55 supporting said lens, an adjustable re?ector en
closed by the casing for cooperation with the lens,
and a pivotal support for theireflector including
a forwardly projecting?nger extended through
an opening in the rim of the re?ector, a pin car
60 ried by the re?ector and loosely engaging an
aperture in said ?nger and a hairpin spring bear
ing at its bight on said ?nger and at its leg ex
tremities on said re?ector rim‘.
2. In a headlamp having a lens and a casing
supporting said lens, an adjustable re?ector en 5
closed by the casing for cooperation with the lens,
and a pivotal support for the re?ector including
a pair of ?ngers projecting at circumferentially
spaced points through the rim ‘of the re?ector,
radial pins on the re?ector entering loosely with 10
in said ?ngers and a hairpin spring associated
with each ?nger with its bight bearing on the
?nger and its legs bearing on the re?ector rim. .
3. The structure of claim 2 wherein one of
said ?ngers is movable axially of the casing for
aiming the re?ector.
4. In a headlamp having a lens and a casing
supporting said lens, an adjustable re?ector en
closed by the casing vfor cooperation with the
lens, and a pivotal support for the re?ector in 20
cluding a pair of ?ngers projecting at circum
ferentially spaced points through the rim of the
re?ector, radial pins on the re?ector entering
loosely within said ?ngers and a hairpin spring
associated with each ?nger with its bight bearl 25
ing on the ?nger and. its legs bearing on the re
?ector rim and adjustable means engaging the
re?ector in spaced relation to said ?ngers to
swing the same about said pins.
5. In a headlamp having a lens, a lamp casing 30
supporting said lens, a sub-body resiliently
mounted in the casing for peripheral sealing en
gagement with the lens, re?ector supporting de
vices carried by said sub-body, an adjustable
re?ectorpivotally mounted at circumferentially 35
spaced points on said supports for cooperation
with said lens, means adjustably mounted on the
casing and operable from outside the casing to
shift one of said supports in adjusting said re
?ector. and additional means operatively con
nected with the re?ector and accessible from
outside the casing to tilt the re?ector on said
6. In a headlamp having a lens, a casing sup
porting the lens, a shiftable member adjustably
mounted inrand projected through the casing
wall, an adjustable re?ector for cooperation with
said lens, a sub-body having supporting devices
engaging the re?ector in circumferentially spaced
relation to mount the same adjustably therein, 50
one of said re?ector supporting devices being
shiftable in the sub-body and means mounting
the sub-body on'the casing in peripheral sealing
engagement with the lens and presenting said
shiftable re?ector supporting device for operative
relation to said shiftable casing mounted member.
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