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Патент USA US2107362

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Feb. 8, 1938.
c. v. BERGSTROM
.
2,107,362
REFLECTOR
Filed March 21, 1954 '
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INVENTOR‘.‘
BY
Qmwbrmmm
. ATTORNEY‘.
Patented Feb. 8, 1938
.
2,107,362
UNITED STATES PATENT OFFICE
2,107,362
-
REFLECTOR
Carl V. Bergstrom, Milwaukee, Wis.
Application March 21, 1934, Serial No.‘716,579
16 Claims. (Cl. 88-82)
The invention relates to re?ectors and more
particularly to re?ectors used in display or traffic
control signs that receive their illumination by
re?ection.
sign.
.
form of letters or designs and form the re?ecting
part of said sign which part isilluminated by the
as the rear housing, are eliminated.
vide an improved re?ector of the so called “but
ton re?ector” type wherein a series of re?ectors
and their lenses are mounted on a sign in the
headlights of oncoming road vehicles or by any
other light source. According to the present in
vention the button re?ector is formed of a metal
re?ector and a. glass lens mounted in a rubber
15 socket, preferably premolded with said parts as
sembled therein, though it may be molded about
said parts. This socket has an inside groove to re
tain the lens and re?ector in position and where
the socket is premolded, it also preferably has a
20 stretch ?t around the re?ector. A plurality of
the rubber sockets may also be molded in one
piece with the front plate of the sign. . Some ad
vantages of the invention will now be pointed out.
The rubber socket 'being elastic, tightly grips
25 the lens and re?ector and forms,_ with the aid
of a rubber cement bond, a watertight, moisture
proof and airtight assembly which is important in
preventing deterioration of the re?ector and
clouding of the lens.
The live rubber housing around the lens pro
30
tects it from shocks from any direction and thus
acts as a shock absorber. This construction also
acts as a protection against shock from stones
thrown at the sign or other possible injuries from
35
.
Where the rubber sockets are formed as part 6
of the front of the sign, the construction of the
sign is greatly simpli?ed as in this form of the
invention the usual individual button re?ector as
semblies and other metal parts of the sign, such
The general object of the invention is to pro
10
spring between the rear plate or housing and
the button itself, thus providing a substantially
rigid assembly between the button lenses and the
shock.
_
,_
The in- 10
tegral sockets may be arranged together in the
form. of letters secured to any suitable support
to form the words of the sign.
The invention further consists in the several
features hereinafter set forth and more particu- l5
larly de?ned by claims at the conclusion hereof.
In the drawing:
,
Fig. 1 is ‘a plan view of a device embodying the
invention, parts being broken away and part of
the housing being shown in dotted lines;
20
Fig. 2 is a side elevation view of one of the re
?ector units;
Fig. 3 is a bottom view of the device shown in
Figs. 1 and 2;
Fig. 4 is a detail sectional view taken on the 25 _
line 4-4 of Fig. 1 with the housing shown in full;
Fig. 5 is a detail vertical sectional view through
the socket shown in Fig. 4;
Fig. 6 is a view, similar to Fig. 4, showing cer
tain modi?cations;
*
30
Fig. 7 is a view, similar to Fig. 4, showing another modi?cation; and
'
Fig. 8 is a view, similar to Fig. 5, showing cer
tain modi?cations.
Referring to Figs. 1 to 5 inclusive, the device in- 35
Another advantage of the invention is the ease
of assembly. of the lens and re?ector in the socket.
cludes a socket l0, a button lens H and a re
virtually “popped” into place.
adapted to receive the re?ector l2 and the lens ll .
?ector l2 for assembly to a casing including a
The inside of the socket and the outside of the ' front plate l3 and a rear plate l4 secured to the
front plate by the usual clamping bolt 3|.
lens and reflector may be ?lmed with rubber ce
The socket I0 is formed of rubber su?iciently 40 ment
and
the
parts
assembled
while
the
cement
40
is wet, under which conditions the cement acts soft to act as a good cushioning material and is
provided with a cavity l5 forming a pocket
as .a lubricant and the lens and re?ector are
A further advantage of the rubber socket as
sembly is that it is cheaper than the metal
sockets usually employed and eliminates the use of
other parts necessary to hold the metal sockets in
place and also provides a greater insurance
against breakage. As hereinafter described, it
50 simpli?es and improves the connection between
the re?ector and the sign itself.
A further object of the invention is to provide
The bottom portion of the cavity I5 is cup
shaped and the re?ector I2 is similarly formed, 45
preferably as a sheet metal stamping either silver
or chromium plated.
_
The lens is a so-called button lens and has a
cylindrical shank portion provided with an an
nular ?ange I 6, and its focus is arranged to throw 50
the rays received by said lens upon the concave
re?ector l2.
The upper part of the re?ector preferably has
a. rubber socket having a suction cup moulded
a tight ?t with the shank of the lens and is here _
as a part of the bottom of the button lens as
55 sembly and which acts as a cushion, take up, or ' shown as ?tting the annular recessed portion I1 55
2
2,107,862
below the ?ange l6 which portion is of some ,breaks, the pieces may be picked out of that
what smaller diameter than the part I8 of the particular socket and the re?ector removed and
shankabove said ?ange, the difference in di
the socket then washed out with gasoline to
ameters between the parts I‘! and I8 being sub
dissolve the old rubber cement, and then a new
stantially equal to the thickness of the re?ector lens and re?ector assembly may be pushed or
walls. In assembling the re?ector to the lens “popped” into place. The rubber may be molded
some cement may be used in the joint to insure
in any color desired and may be formed as in
a good seal.
dividual letters on ya sign: Forv example the
letters in the word “stop” may be of one piece
I
'
The socket has an annular groove l9 formed
10 therein adapted to receive the ?ange l6 of the
lens when the lens with the re?ector secured
thereto is pushed or “popped” into place in the
socket under which conditions the re?ector seats
at the bottom of the socket cavity and both the
lens and re?ector are interlocked to the socket
which is in a stretched or tensioned condition
and thus tightly hugs or engages the lens and
‘re?ector.’ The socket as above described is a
premolded rubber member and on assembly “the
V20 inside of the socket and the outside of th‘edens
and re?ector are ?lmed with .a suitable rubber
cement‘ and the parts assembled while‘ the cement
construction and suitably fastened. to the front, 10
of a metal traffic sign.
.'
'.
It is also to be noted that in each instance
the button lens is supported in rubber and spaced
from the front plate or other metal parts,- and is
thus protected against shocks, and if the lens
should be struck directly, the socket will yield to
some extent and thus act to absorb some of the
shock. Thus the rubber casing acts as an e?i
cient shock absorber.
'
'
The forms of the invention shown in'Figs. 4 20
and 6 each provide for holding the socket to
the front plate by the socket itself so that said
is wet under which conditions the cement acts
socket will not fall out when the rear plate is re
as a lubricant so that the lens and re?ector are
moved, and it is to be notedthat this feature of
25 virtually “popped” into place. The socket thus , the construction is much simpler than metal ac
assembled with the re?ector and lens forms a cessories such as springs, retaining collars, look
watertight, moisture proof and air tight assem
ing caps, thumb screws, etc., heretofore used in
bly so that deterioration of the re?ector surface this art.‘
and clouding of the lens is prevented.
’
I desire it to be understood that this inven
30
The socket in preferably has a suction cup 20
formed at its back and an annular shoulder 2|
at its front portion‘adjacent' an annular part 22.
The part 22 is of a size to tightly ?t or has a ‘
“pushed” or “corked” ?t in an opening 23 of
the front plate I3 with the shoulder 2| engaging
‘the back of said plate and held there-against by
the pressure of the back plate H on the cup
tion is not to be limited to any particular form 30
or arrangement of parts except in so far as such
limitations are included in the claims
What I claim as my invention is:
e 1. ,In a device of the character, described, the
combination of a button lens having an annular 35
?ange, a re?ector, and a rubber casing having a
socket in which said re?ector and lens are mount
20 which, because of itserelatively yieldable form, ed and ?tted, said socket having an annular
acts as a spring to tension the connection Between - groove adapted to receive said ?ange, said re
the socket and said plates. '
7 ?ector retained in position by said lens and the 40
The socket i0’ is identical with the socket l0 tensioned engagement of the bottom of said
except the annular part 22 is omitted sothat the socket.
‘
top 24 engages the back oi’v the plate l3, whose
2. In a device of the character described, the
opening 23 is spaced from the lens I I, said socket
45. being held against the front, plate by the back
plate H with the socket in a tensioned condition
as in- the first described construction.
v The socket I0” is identical with the socket l0
except that the annular part 22' is shaped so .
combination of a button lens, a re?ector mounted
on said lens, and an elastic rubber casing sur
rounding said re?ector and the sides of said lens
and in tensioned engagement with the surrounded
surfaces.
4
-
Y
3. In'a device of the character described, the
combination of a button lens, a re?ector, an
elastic rubber casing in which said re?ector and
lens are mounted to form a unit, said ‘casing hav-'
ing a yieldable back portion, a front plate having
an opening through which a portion of said lens
that its front portioh 24 slightly overlaps the
opening 23 in the front plate It, and the shoul
der engaging with said plate is in the form of
a yieldable annular lip or ring 25.
In each of the forms above described the socket
55 is preferably
premolded rubber member, but projects and a surface against which a portion of 55
it may, if des d, be molded about the lens and _ said casing abuts, ‘and a back plate engageable
re?ector to form the complete assembly.
_
with said yieldable back portion, all end thrust of
These assemblies are mounted. in the support
including the plates I3 and II, suitable provision
being made to- secure the back plate It in‘ posi
tion after the-units have been mounted in or
positioned in the openings in the front plate,
'said unit bein‘gtaken entirely by said casing.
4. In a device of‘ the character described, the
combination of‘ a button lens, a re?ector, a rubber
‘casing in which said re?ector and lens are
mounted to form a unit, a front plate having‘ an
and they are usually arranged to form designs ' opening, said casing having a part extending
or letters ofwords, such as the word “stop" for
a tra?'lc sign.
' .
<
,
In Fig. 8 I have shownithe rubber socket 26
as formed integral with a» front plate portion
21 of a sign which portion is preferably rein- ‘
through said 'opening to form a holding ?t there
.with, and means engaging the back ‘of said casing 65
to hold it ?rmly against said front plate.
. 5. In a device of the character described, the
forced by an apertured metal plate 2| about I combination of a button lens, a re?ector, a rub
ber casing in which said re?ector and lens. are 70
70 which the rubberfis molded. The cavity 29 form
moimted to form a ‘unit, said casing'having an
ing the socket is formed as in the previous con
structions to take the re?ector l2 and the lens annular front end portion and a shouldered por
II and is provided with an annular groove 3|l_ tion adjacent thereto, a front plate having an
forinterlocking connection with the ?ange [-6
of the lens.
J
With this construction if a 163$
opening, said annular front end portion having
a, holding fit in saidopening, .and ‘means for 75
3
2,107,862
holding said shouldered portion against the back
of said plate.
6. In a device of the character described, the
combination of a button lens, a re?ector, a rubber
casing in which said re?ector and lens are mount
ed to form a unit, said casing having an annular
front end portion and a yieldable shouldered por
tion adjacent thereto, a front plate having an
opening, said annular front end portion having
a holding ?t in said opening, and means for hold
ing said shouldered portion against the back of
said plate.
7. In a device of the character described, the
combination of a button lens, a re?ector, a rub
15. ber casing in which said re?ector and lens are
mounted to form a unit, a front plate having an
panel, means securing the other end of the holder
to the rear panel, a front panel provided with an
aperture through which the front portion of the
button projects and means clamping the holder
between the two panels.
?ector, and a yieldable rubber casing in which
said re?ector and lens are mounted, means on
said lens having interlocking connection with said 10
casing to prevent longitudinal movement of said,
re?ector and lens relative thereto, said casing
yieldingly contacting said re?ector over the major
portion of its area and cemented thereto in mois
opening, a portion of said lens being arranged
to project through said opening, said casing hav
ing a suction cup formed on its back, and means
20
engaging said cup and cooperating with said front
plate to hold said unit ?rmly in position.
I‘ 8. In a device of the character described, the
combination of a front plate of elastic rubber and
yieldable sockets integral with said plate and ex
25 tending from the back thereof, a button lens and
a re?ector detachably mounted in each of said
sockets, the walls of the socket being tensioned
about said lens and re?ector to hold said lens. and
re?ector in assembled relation.
30
‘
-
9. In a device of the character described, the
combination of a button lens having an annular
recess'adjacent its base, a spherically curved re
?ector having a cylindrical extension ?tting said
annular recess, and a rubber casing contacting
35 with said lens and the sides and base of said re
?ector and securing said lens and re?ector in
assembled relation.
‘
'
10. In a device of the character described, the
combination of a button lens having an annular
40 ?ange intermediate its ends and an annular recess inwardly of said ?anga'a spherically curved re
?ector having a cylindrical extension ?tting said
annular recess, and a rubber casing having a
socket in which said re?ector and lens are mount
15 ed and ?tted, said casing having an annular
groove adapted to receive said ?ange and also
engaging said lens in front of said ?ange.
11. A re?ector button mounting assembly com
prising a re?ector button, an elastic rubber hold
er having a pocket at one end receiving and
gripping the rear portion of the button, a rear
"
12. In a device of the character described, the
combination of a button lens, a separable re
ture proof relation.
-
13. In a device of the character described, the
combination'of a button lens, a re?ector for said
lens disposed below the base thereof to re?ect rays
of light passing through said lens, an elastic rub
ber casing in which said lens and re?ector are 20
mounted and contacting with the sides of said lens
and the sides and base of said re?ector and secur
ing said lens and re?ector in light re?ecting rela
tion.
14. In a light re?ecting device of the character
described, the combination of a button lens, a re
?ector for said lens disposed below the base there
of to re?ect rays of light passing through said
lens, and an ‘elastic rubber casing in which said
re?ector and lens are mounted ‘and held thereby
in light re?ecting relation; said casing contacting
said re?ector over the major portion of its area.
15. In a device of the character described, the
combination of a button lens, a re?ector‘ for said
‘lens disposed below the base thereof to re?ect 35
rays of light passing throuli said lens,- and an
elastic rubber casing surrounding said re?ector
and the sides of said lens and in tensioned en
gagement with the surrounded surfaces, the sides
of said lens having a part in interlocking engage
40
ment with a part of said casing.
16. In a light re?ecting device, the combina
tion of an elastic rubber casing having a yieldable
integral socket portion, a button lens and a sep-v
‘arable re?ector disposed in light re?ecting rela 45
tion thereto detachably mounted in said socket
portion, the walls of said socket being tensioned
about said lens and re?ector-to hold said lens and
re?ector in assembled relation.
CARL v. BERGSVTROM.
50
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