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Патент USA US2138077

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Nov. 29, 1938.
A. N. TAYLOR ET AL
' 2,138,077
LIGHTING UNIT MOUNTING
Filed Feb. 15, 1937
'
~
INVENTORS
ARNOLD N.TAYLOR
NORBERT P. WORDEN
2,138,077
Patented Nov. 29, 1938
UNITED STATES PATENT OFFICE
2,138,077
LIGHTING UNIT MOUNTING
Arnold N. Taylor and Norbert P. Worden, De
troit, Mich., assignors to G. M. Hall Lamp Com
pany, Detroit, Mich., a corporation of Michi
g an
Application February 15, 1937, Serial No. 125,847
5 Claims. (Cl. 240——41.5)
This invention relates generally to lamps for prises a split ring 8, substantially C-shaped
motor vehicles and refers more particularly to
that type designed for use as head lamps.
In the past it has been customary to form such
lamps with an outer casing of the desired con
?guration and to mount within the casing as a
subassembly the essential elements of the lamp
such as the re?ector, bulb socket, and the elec
0
trical terminals or connections. However, the
development of lamps has progressed to such a
point that it is now desirable to use a ?lament
instead of a bulb as the lighting element and to
mount within the lamp casing as a hermetically
sealed lighting unit a re?ector, ?lament, lens
' and electrical terminals and connections.
Thus,
it has been necessary to redesign the mountings
for such elements.
>
In view of the foregoing, it is an object of the
present invention to provide the hermetically
sealed units with mountings that will effectively
hold the units in proper position relative to the
lamp casing.
Other objects, advantages and novel details
of construction of this invention will be made
a more apparent as this description proceeds, es
» pecially when considered in connection with the
accompanying drawing, wherein:
Figure l is a longitudinal vertical sectional view
through a lamp embodying our invention;
Figure 2 is a detail View of the supporting ring
for the lighting unit.
Referring now to the drawing, A is the lamp
casing, B is the hermetically-sealed unit, and C is
the mounting embodying our invention for said
35 unit.
In the present instance, the casing A may be
any desired con?guration and may be mounted
in any suitable manner upon the motor vehicle.
Preferably the casing A is elongated in form and
40 is provided at its forward end with an opening I
in which the unit B is mounted.
The hermetically-sealed lighting unit B may
be made in any suitable manner and preferably
has a shell of heat resisting glass, known in the
45 trade as Pyrex, provided with meeting front and
rear walls 2 and 3 and an annular bead 4 at the
juncture of said walls. The front wall 2 of this
shell comprises the rings, while the front face of
the rear wall 3 has a coating of suitable material
50 such as aluminum forming a re?ector 5. A suit
able ?lament 6 is carried by the rear wall 3 at
the center thereof and is provided with suitable
electrical terminals 1 for connection with electric
conductors (not shown).
55
The mounting C for the unit B preferably com
springs 9 and I0, and a screw H. Preferably the
ring 8 has a‘channel-shaped portion l4 receiving
the bead .4 of the unit and an inwardly project
ing, open, return-bent ?ange l5. As shown, the
base of the channel-shaped portion I4 is pro
vided with an, outwardly opening, circumferen
tially extending, shallow channel I6 for receiv
ing the edges of the opening I in the casing, the
outside diameter of the inner side wall l6a of 10
said channel being less than the diameterof the
opening I so that the wall l6a may enter the
opening to permit engagement of the base of said
channel IS with the edges of said opening, and
the outside diameter of the outer side wall I61)
of said channel being greater than the diameter
of the opening I whereby said wall lBb will abut
and overhang the casing about said opening and
thereby limit inward movement of the unit B in
the casing. The return-bent ?ange N3 of the 20
ring is disposed in substantially concentric rela
tion to the forward end portion I‘! of the casing.
Lugs l9 are struck out from the ring 8 upon
opposite sides of the split 20 and are engaged by a
screw 2! to hold the ring tightly clamped upon the 25
unit B.
The springs 9 and I0 are opposed to one an
other at diametrically opposite points of the
casing and are located between the return-bent
?ange l5 of the ring and the forward end portion
[1 of the casing. Preferably the spring 9 is riv
eted at one end to the casing A and has its other
end 22 free for movement to and from the ?ange
[5 of the ring. The spring I0 is riveted at one
end to the ?ange l5 of the ring and has its other
end 23 free and bearing against the forward end
portion ll of the casing. Initially the free end
22 of the spring 9 is spaced from the ?ange I5
of the ring, as illustrated by dotted lines in Figure
1, to permit the insertion of the ring 8 and unit
B into the casing A, but is subsequently pressed
?rmly against said ?ange l5 by the screw ll
after the parts are in place so that the unit B
may be held against outward displacement from
the opening I in the casing. In this connection it
will be noted that the screw II is operable from
the ouside of the casing A and threadedly engages
a nut 24 swedged or otherwise rigidly secured to
the casing A. Preferably the inner end 25 of
said screw is rounded for engagement with the
free end 22 of the spring.
What we claim as our invention is:
1. A lamp having in combination, a casing pro
vided with an opening, a lighting element within
said casing for projecting light rays through said
80
35
40
45
50
2
2,138,077
opening, a mounting for said element including
a ring mounted in said opening and holding said
element, said ring having means engageable with
the casing to limit insertion of the element into
the casing and having a ?ange substantially con
centric With the adjacent portion of the casing,
yieldable elements extending between said ?ange
and the adjacent portion of said casing, one of
said yieldable elements being normally contracted
10 to permit insertion of the lighting element into
the casing, and means for expanding said nor
mally contracted element to e?ectively hold the
lighting element against outward displacement.
2. A lamp having in combination, a casing pro
15 vided with an opening, a lighting unit in said
opening, and a mounting for said unit including
a holder for the unit mounted in the opening and
having means engageable with the casing to limit
inward movement of the unit relative to the
20 casing, yieldable means associated with the holder
and casing for holding the unit against outward
displacement, and a follower for the yieldable
means carried by and operable from the outside
of said casing.
25' 3. A lamp having in combination, a casing pro
vided with an opening, a lighting unit in said
opening, and a mounting for said unit including
a ring mounted in said opening and holding said
unit, said ring having a projection within and
yieldable means and operable from the outside of
the casing for holding the unit against outward
displacement.
_
4. A lamp having in combination, a casing
provided with an opening, a lighting unit in said 5
opening, a mounting for said unit including a
ring adjustably mounted in saidopening and
holding said unit, said ring having means engage
able with the casing to limit movement of the
unit into the casing and having a ?ange within 10
and substantially concentric with the adjacent
portion of the casing, and substantially C-shaped
springs extending between the ?ange and the ad
jacent portion of the casing for holding the unit
against outward displacement.
15
5. A lamp having in combination, a casing pro
vided with an opening, an electric lighting ele
ment within the casing, and a mounting for said
element including a holder for the element
mounted in said opening, said holder having 20
means engageable with the casing to limit in
ward movement of the element relative to the
casing and provided within the casing with a
rearward extension, yieldable means associated
with the casing and extension to limit outward 25
movement of the element relative to said casing,
and adjustable means extending through a wall
of said casing and engaging a portion of said
yieldable means.
30:. substantially concentric with the casing, yieldable
means ‘extending between said concentric ele
ments, and means engageable with a part of said
30
ARNOLD‘ N. TAYLOR.
NO‘RZBER-T P. WORDEN.
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