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Патент USA US3092705

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June 4, 1963
3,092,695
R. ABRAMS
NIGHT LIGHT WITH SWIVEL ELECTRICAL CONNECTOR
2 Sheets-Sheet 1
Filed Aug. 11, 1960
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INVENTOR.
RALPH
Z7
.27
75
ABRAMS
46’
F 16.4
ATTORNEY
June 4, 1963
R. ABRAMS
3,092,695
NIGHT LIGHT WITH SWIVEL ELECTRICAL CONNECTOR
Filed Aug. 11, 1960
2 Sheets-Sheet 2
INVENTOR.
R ALPH
BY
%
ABRAMS
// ‘I’
ATTO R N EY
3,092,695
Patented June 4, 1963
2
90 degrees so that the light can be positioned at any de
sired angle regardless of the position of the receptacle
3,992,695
NIGHT LIGHT WITH SWIVEL ELECTRICAL
CGNNECTGR
slots.
Referring more in detail to the drawings, FIGS. 1 to
Ralph Abrams, Sharon, Mass, assignor to Cable Elec
6 inclusive illustrate the night light of the present inven
tion having a swivel feature. The night light comprises
trrc Products, Inc., Providence, R.I., a corporation of
Rhode Island
a housing 20 which can be molded of any suitable di
electric material such as a plastic material having a small
Filed Aug. 11, 195i), Ser. No. 49,070
7 Claims. (Cl. 206-51)
bulb 21 screwed into a socket portion of the housing.
My present invention relates to the electrical art and 10 A pair of contact elements 22 extend laterally at right
angles to the bulb, and an operating switch 23 for turn
more particularly to a novel construction of an auxiliary
mght light.
ing the light on and off extends from the housing opposite
the contact elements 22.
_ The principal object of ‘the present invention is to pro
vide a small night light having a minimum number of
Now viewing FIG. 2, the housing 20 comprises a
15 lower portion 24, an upper portion 25 and the contact
easily assembled parts.
element holding disc 26. _ When the portions 24 and
Ar further object of the present invention is to provide
25 are placed one over the other as shown in FIG. 2, an
a.n1ght light which can be swiveled 90 degrees without
annular socket portion 27 is formed to the right having
disturbing the electrical contact.
internal threads 28 and a groove 29 at the upper edge
Another object of the present invention is to provide
extending from within the threaded portion 28 rearwardly,
a night light construction having readily stamped parts
and terminating in a recess 30 extending behind the socket
which can be assembled without the use of screws, solder
ing or other means.
portion 27. The socket portion 27 may also be provided
With the above and other objects and advantageous
features in view my invention consists of a novel arrange
with an external annular groove 31 for the attachment
of a shade if desired. The central portion of the housing
tion ‘following in conjunction with the accompanying
drawings and more particularly de?ned in the appended
separated by a wall 33. The upper housing member 25
is provided with a short extending portion 34 at right
ment of parts more fully disclosed in the detailed descrip 25 is provided with a large recess 32 behind the recess 30
claims.
In the drawings,
angles to the socket portion 27 having a recess 35 which
is closed by the disc 26.
FIG. 1 is a perspective view of a night light embodying 30 The operating portions of the electrical system are
my mvention.
FIG. 2 is an enlarged section taken on line 2—2 on
designed to ?t into the housing with a minimum of assem
bly effort. Each contact element 22 is formed as shown
FIG. 1.
FIG. 2A is a perspective view of one of the internal
in FIGS. 2, 5 and 6. It comprises a straight contact por
tion 36 folded at its thrust end and then bent outwardly
to form a spring contact portion 37. The inner end is
bent at right angles and at an angle to the axis of the
contact elements.
FIG. 3 is a front elevation of the light.
contact element to form a contact shoe 38 which is cut
FIG. 4 is an enlarged elevation with the external con
away at 39 as shown in FIGS. 5 and 6.
tact elements removed.
The disc 26 is provided with a pair of ‘slots 40. The
FIG. 5 is a perspective view of the external contact 4.0
contact elements 22 are pushed through the slots 40 into
element mounting.
the position shown in FIG. 2. As they are pushed through
FIG. 6 is a perspective view of one of the external
the slots the spring contact portions 37 are squeezed in
contact elements.
wardly until they reach the outer portion of the slot and
FIG. 7 is a perspective view of another form of night
light embodying my invention.
FIG. 8 is an enlarged section taken on line 8-3 on
FIG. 7.
45
then they spring ‘outwardly into the position shown in
FIG. 2 so that they bear against a shoulder in the outer
surface of the disc 26. This locks the con-tact elements in
place. Viewing FIG. 5 the cut away portions 39 de
‘FIG. 8A is a perspective view illustrating the oper
?ne a central spaced area between the contact elements.
ation of the switch.
FIG. 9 is a front elevation of the night light shown in 50 A dielectric bushing 41 extends from beneath the disc 26
and a swivel post 42 is pushed through 1a central open
FIG. 7.
ing in the disc 26 through the bushing 41. A washer
FIG. 10 is an exploded perspective view of the various
43 is positioned between the head of the post and the
contact elements.
outer surface of the disc 26. The lower end of the post
It has been desirable to provide a small night light
which can be plugged into the auxiliary receptacle of a 55 threadedly engages the upper housing portion 25 at 44.
With this mounting the disc 26 holding the contact ele
conventional light or even into a wall receptacle. These
merrts 22 in spaced parallel relation can swivel around
night lights use tiny bulbs with very little current to pro
the post 42.
vide a small illumination at night in desired areas. The
Viewing FIGS. 4 and 5, the disc 26 is provided with
parts are necessarily small and besides a pair of elec
trical contact elements a socket must be provided for 60 a ?ange 45 having a depending integral stop member 46‘.
The central bushing 41 is provided at diametrically op
the bulb with suitable electrical connections and a switch
posite
sides with hearing portions 47 slightly shorter than
must be provided for turning the light on and off. For
the bushing 41. The recess 35 is provided at its bottom
the service it performs it is desirable that the light be
sold as cheaply as possible. The present invention there
with oppositely disposed slightly raised portions 48.
elements thereof can be assembled without the use of
FIG. 5 and placed over the recess 35 as shown in FIG.
fore provides an efficient night light in which the various 65 When the disc 26 is inverted from the position shown in
screws or soldering making for rapid and easy assembly
4 the bearing portions 47 will ride on the raised portions
48 and the stop element 46 will be positioned as shown in
dotted lines in FIG. 4 in a quadrant opposite the socket
with one or two small screws. Furthermore, the night 70 portion 27. The raised portions 48 act as a step beyond
which the element 46 cannot rotate. This is equivalent
light of the present invention can additionally be pro
to a 90 degree swing. This permits the disc 26 carrying
vided with means which permit the light to be swiveled
of stamped parts and in which the entire night light
assembly including the housing can be held together
3,092,695
3
4
the contact blades 22 to rotate through a 90 degree angle.
In order to ensure the continuity of electrical contact,
this angle must be limited to 90 degrees.
Viewing FIG. 2, the contact element 22 to the right is
electrically connected to the threaded portion of the
socket 28 for electrical contact with the threaded portion
of the bulb 21. This electrical connection is made
the coil spring 73 and its horizontal arms riding in the .
slot 72. As can be seen in FIG. 2 the horizontal arms
to close the electrical contact. Turning movement of the
switch 23 will thus open or close the electrical contact
between the members 60 and 65. The two portions 24
and 25 of the housing may be held together by one or
through a contact element 49 illustrated in FIG. ‘2A.’
more screws 75 as shown in FIG. 4.
are yieldingly held against the contact portions so and 65
With the parts thus assembled a bulb 21 is threaded
The contact element 49 comprises a flat stamping hav
ing a wide upper ‘portion 50 and a narrow lower portion 10 into the socket 27 with one element of the bulb contact
ing the spring portion 58 of the member 57 and the other
51. The wide upper portion is provided with a central
element of the ‘bulb contacting the member 51. The
' ‘ upstanding post 52 having spaced lugs ‘53 ‘at each side
edge. The upper portion 50 is also provided'with for
wardly extending lugs 54 extending at right angles from
device as shown in FIG. 1 can now be pushed into a
conventional electrical receptacle. The light can be
the lower edge of the portion 59. The narrow portion 51 15 turned on or oh? by the rotation of the switch 2311s here
extends downwardly and then outwardly terminating in
inab‘ove described. However, the housing can be rotated
an upturned end 55. Referring to FIGS. 2 and 4 the ele
90 degrees as shown in dotted lines in FIG. '3 to change
ment 49 is pushed through a slot in the upper housing
portion 25 until the lugs 54 abut the upper wall ~of the
the position of the bulb without a?ecting the electrical
contact. As the housing is rotated the contact elements
recess 30. The lugs 53 are then forced outwardly so that 20 22 mounted in the disc 26 are held in ?xed position by
they swedge over the bottom wall of the recess 35 as
the wall receptacle. The contact members 49 and 61
shown in FIG. 4. This locks 'the element 49 in position.
also rotate. However, electrical contact between these
It will be noted that the narrow portion ‘51, extends over
members and the contact blades 22 is made through
the groove 29 so that it'has a resilient action in the path
springs 56 :and 64 which are resiliently resting on the
of movement of the bulb 21. A coil spring 56 of con 25 portions 38 of the contact blades as positioned in FIG.
ductive material is now positionedover the post 52 of
5. Since these portions 38 each extend over more than
the contact element 49 with the bottom of the spring’
one fourth the circumference of a circle the springs 56
resting on the portion 59 and ‘the upper end of the spring
and 64 maintain electrical ‘contact with these portions
bearing against the shoe 38 of the contact blade 22. The
while they ‘are sliding along. This permits a swivel move
electric current is thus transmitted through the: right con 30 ment through 90 degrees without breaking contact.
tact blade shown in FIG. 2, through the spring 56,
In the form shown in FIGS. 7 to 10 inclusive the
through the contact element 49 and portion 51 to the side
swivel feature of the light has been omitted. In this
of the bulb base 21.
form the dielectric housing comprises a lower portion 76
The other electrical ‘contact must be made with the
and an upper portion 77 as viewed in FIG.» 8.- To. the
bottom center portion ‘of the bulb 21. The path of cur 35 right is an internally threaded socket portion 78 as in
rent between this point and the left contact ‘blade 22 is
the previous form. Behind the socket portion 73 is a‘
controlled'by-the switch 23. A small contact member-57 V
narrow recess 79 having a wall 30 which separates it
is mounted above‘the housing wall '33 in the upper por
tion 25 of the housing. Thecontact member-~57 'is-shaped
from the large recess 81.
The contact portion 32 ex
tends at right angles to ‘the socket portion 78. The con
as shown in FIG. ‘2.5 It comprises a's'p'ring portion 58 in 40 tact elements are constructed as shown in FIG, 10. The
the recess 30 in axial alignment with the socket portion
right contact element 83 ‘comprises a ?at elongated con-j
27 so as to receive the bottom of the bulb 21. The
tact portion reentrantly bent at the thrust end and term
portion 58 is bent into "an inverted, U-shape with the in
inating in an outwardly angled spring contact portion '84},
side arm bearing against the short wall portion in the
The lower end of the contact portion 83 is provided with
upper housing portion 25. This short ‘arm portion is
bent around ‘and up the inner side of this wall portion at
59 and terminates in a horizontal contact end 60‘ in the
upper rightphand portion of the recess 32. It will be
noted that the wall 33 of the lower housing portion 24
bears against the portion 59 of this contact member to
lock it in position. A Z-shaped ?at contact member 61
is mounted in the upper left portion of the recess 32.
The upper end of the member 61 is constructed identical
with the upper portion of the contact element 49. It is
provided with a central post 62, swedged lugs 63, see FIG.
4, and a coil spring 64 on the post 62 which contacts the
surface 38 of the left contact blade 22. Theintermediate
horizontal portion of the, member 61 bears against the
upper Wall of the recess 32 to lock the contact element
61 to the housing. The lower verticalportion 65 of the
element 61 extends downwardly into the recess 32 termi
nating at a point opposite the contact area 60 of the
member '57.
‘
45
two spaced short lugs ‘85 extending at right angles thereto
[and a central elongated contact member ‘86 extending
laterally at a downward angle and terminating in a bent
portion 87. The blade 83 is pushed through a slot in’
the upper portion of the housing extending from’ the
recess 79 into the contact portion 82. The blade; 33 is
pushed into the slot until the lugs 85 abut the upper
wall of the recess as shown in FIG. 8. At this point
the spring portion 84, which has been compressed, springs
outwardly over a shoulder 88 to lock the blade ‘83 in
position. It
be noted ‘that the portion 86 now ex
tends over a groove in the threaded portion of the socket
78 similarly to the construction shown in PEG. 2. The
left contact blade 85} comprises a ?at elongated contact
portion also bent at ‘its thrust end and terminating in the
spring portion 90. The lower end is provided with an
integral horizontal strip 91 terminating in a depending
contact portion 92. The blade 8% is also pushed'through
a slot in the contact portion 82 of the housing until the
The gap between the contact ‘portions 607and 65 is
controlled by the switch 23. The switch 23 comprises 65 horizontal portion 91 abuts the upper wall of the recess
81 and the spring contact portion 96 springs outwardly to
a solid cylindrical'dielectric portion 66 having a collar 67.
lock over a shoulder 93.
The lower housing portion 24 is provided with an open
A contact member 94 is provided similar to the member
ing 68 leading to the recess 32. The cylindrical portion
57 in FIG. 2. It is provided with the spring portion 95
66 extends downwardly through the opening 68‘with the
which is an axial ‘alignment with the socket 78 to con
collar 67 resting on shoulders 69 in the recess. The cylin
tact the bottom of the bulb. The U-bend 96 is wrapped
drical portion 66 is provided at its upper end with a cen
tral opening 70 and an upwardly extending hollow por
around the bottom of the separating wall and held in
place by the Wall portion 80 between the recesses 79 and
tion 71 slot-ted across a diameter at 72. A coil spring
‘81. Within the recess 81 the member 94 is provided
73 is positioned in the opening 70. A’ T-shaped contact
member 74-is mounted with its vertical leg extending into 75 with a horizontal eontactportion‘97. Electrical contact
3,092,695
6
5
between the portion 92 of the contact blades 89 and
the portion 97 of the member 94 is controlled by a switch
98 identical to the switch 23 in FIG. 2.
It comprises a
cylindrical portion 99 held in place by a collar 100 rest
ing on shoulders in the housing. A spring 101 is mounted
in a recess 102. The inner end of the switch is provided
with a tubular portion 103 having slots 104. The T
shaped contact member 105 rides in the slots 104 against
portion, a pair of contact blades mounted in said contact
portion, each contact blade comprising an elongated con
tact portion reentrantly bent at the thrust end with the
free end forming a spring contact portion, the other end
of each blade being bent at right angles to form an inner
contact area, said contact blades being mounted on a di
electric disc, said disc being rotatably mounted in said
contact portion, one of said ‘blades having an electrical
connection to the inner wall of said socket portion, a
the action of the spring .100.
Since it is possible that the spring portion 90‘ of the 10 switch mounted in said housing opposite said contact
portion, the other of said blades having an electrical con
blade ‘89 be squeezed inwardly and the blade slipped
nection to one side of said switch, said switch connection
downwardly to interfere with the ‘operation of the switch,
comprising a Z-shaped strip of conductive material hav
I provide an annular spacer 106 having a shank 107 for
ing a vertical portion contacting said switch, a horizontal
frictionally engaging the recess 102 above the member
105. The thickness of the spacer 106 is such that it 15 portion contacting said housing, a second vertical portion
extending beneath said other contact blade, and a coil
extends a few thousandths of an inch below the hori
spring surrounding said second vertical portion and re
zontal portion 91 of the contact blade 89. This prevents
siliently contacting the inner contact portion of said other
the contact blade '89 from moving downwardly into the
of said blades, and a contact member in said housing hav
switch.
The operation of this form is identical to the form 20 ing an electrical connection to the other side of said
switch and having a resilient portion in axial alignment
shown in FIG. 2 except that the swivel action is elimin
with said socket portion, said contact blades, contact
ated. The parts are held together by one or more screws
member, electrical connections, and switch being locked
through the two portions of the housing. In both forms
in said housing by interengaging portions of said parts
it will be noted that the various contact elements are
so constructed that they can be readily stamped from 25 and said housing.
3. A night light comprising a dielectric housing having
sheet stock and merely pushed into position. The con
a socket portion extending therefrom, a contact portion
tact elements are thus locked into position by the co_
extending from said housing at right angles to said socket
operating bends in the element and portions of the socket.
portion, a pair of contact blades mounted in said contact
Both forms can be easily and rapidly assembled with only
one or two screws necessary to hold the entire assembly 30 portion, each contact blade comprising an elongated con
tact portion reentrantly bent at the thrust end with the
in place. The form shown in FIG. 2 has all these fea
free end forming a spring contact portion, the other end
tures with the addition of the ability to swivel through
of each blade being bent at right angles to form an inner
a 90 degree arc.
contact area, said contact blades being mounted on a di
As has been previously stated these night lights are
small ‘and must be priced quite reasonably. However, it
is necessary to have the proper number of contact ele
ments and switching arrangements. Normally the, as
electric disc, said disc being rotatably mounted in said
contact portion, one of said blades having an electrical
connection to the inner wall of said socket portion, a re
cess behind said disc, said electrical connection compris
sembly of these parts is costly and time consuming. The
ing a conductive strip extending vertically into said re
present invention provides a carefully designed and con
structed miniature light in which the proper electrical 40 cess through a bottom wall thereof, the lower end of said
strip extending laterally into said socket portion, a con
connections can be rapidly and quickly assembled. Other
ductive coil spring surrounding the vertical portion of said
advantages of the present invention will be readily ap
strip in said recess and resiliently contacting the inner
parent to a person skilled in the art.
contact portion of said one of said blades, a. switch
I claim:
mounted
in said housing opposite said contact portion,
4:5
1. A night light comprising a dielectric housing having
a socket portion extending therefrom, a contact portion
extending from said housing at right angles to said socket
the other of said blades having an electrical connection
to one side of said switch, said switch connection compris
ing a Z-shaped strip of conductive material having a ver
portion, a pair of contact blades mounted in said contact
tical portion contacting said switch, a horizontal portion
portion, each contact blade comprising an elongated con
tact portion reentrantly bent at the thrust end with the 50 contacting said housing, a second vertical portion extend
ing beneath said other contact blade, and a coil spring
free end forming a spring contact portion, the other
surrounding said second vertical portion and resiliently
end of each blade being bent at right angles to form an
contacting the inner contact portion of said other of said
inner contact area, said contact blades being mounted
blades, and a con-tact member in said housing having an
on a dielectric disc, said disc being rotatably mounted
electrical connection to the other side of said switch and
55
ing said contact portion, one of said blades having an elec
having a resilient portion in axial alignment with said
trical connection to the inner wall of said socket portion,
socket portion, said contact blades, contact member, elec
trical connections, and switch being locked in said housing
prising a conductive strip extending vertically into said
by interengaging portions of said parts and said housing.
recess through a bottom wall thereof, the lower end of
said strip extending laterally into said socket portion, a 60 4. A night light comprising a dielectric housing having
a socket portion extending therefrom, a contact portion
conductive coil spring surrounding the vertical portion
extending from said housing at right angles to said socket
of said strip in said recess and resiliently contacting the
portion, a pair of contact blades mounted in said contact
inner contact portion of said one of said blades, a switch
portion, each contact blade comprising an elongated con
mounted in said housing opposite said contact portion,
tact portion reentrantly bent at the thrust end with the
65
the other of said blades having an electrical connection
free end forming a spring contact portion, the other end of
to one side of said switch, and a contact member in said
a recess behind said disc, said electrical connection com
housing having an electrical connection to the other side
of said switch and having a resilient portion in axial align
each blade being bent at right angles to form an inner
contact area, said contact blades being mounted on a di
electric disc, said disc being rotatably mounted in said
contact portion, one of said blades having an electrical
tact member, electrical connections, and switch being 70 connection to the inner wall of said socket portion, a
locked in said housing by interengaging portions of said
switch mounted in said housing opposite said contact por
parts and said housing.
tion, the other of said blades having an electrical connec
2. A night light comprising a dielectric housing having
ment with said socket portion, said contact blades, con
a socket portion extending therefrom, a contact portion
tion to one side of said switch, and a contact member in
extending from said housing at right angles to said socket 75 said housing having an electrical connection to the other
3,092,895
7
‘8
side of said switch and having a resilient portion in axial
alignment with said socket portion, said switch comprising
siliently contacting the inner contact portion of said ‘other
of said blades, anda contact memberin said housing hav
a rotatable barrel member having a slotted inner end, a
ing an electrical connection to ‘the other side of said switch
spring mounted in said barrel member, and a T-shaped
contact member having its vertical leg in said spring and
its horizontal portion insaid slotted end, said horizontal
portion contacting said electrical connections to said other
socket portion, said switch comprising a rotatable barrel
member having a slotted inner end, a spring mounted in
said barrel member, and a T-shaped contact member hav
of said blades and to said contact member on rotation of
said barrel member, said contact blades, contact member,
electrical connections, and switch being lockedin said
housing by interengaging portions of said parts and said
housing.
and having a resilient portion in axial alignment with said
ing its vertical leg in said spring and its horizontal portion
in said slotted end, said horizontal portion contacting said
electrical connections vto said other of said blades and to
said contact member on rotation of said barrel member,
said contact blades, contact member, electrical connec- '
5. A night light comprising a dielectric housing having
tions, and switch being locked in said housing by interen
a socket portion extending therefrom, a contact portion
gaging portions of said parts and said housing.
extending from said housing at right angles to said socketv 15
7. A night light comprising a dielectric housing having
portion, a pair of contact blades mounted in said contact
a socket portion extending therefrom, a contact portion
portion, each contact blade compirsing an elongated con
extending from said housingat right angles to said socket
tact portion reentran-tly bent at the thrust end with the
portion, a pair of contact blades mounted in said contact
free end forming a spring contact portion, the other end
portion, each contact blade comprising an elongated con
of each blade being bent at right angles to form an inner 20 tact portion reentrantly'bent at the thrust end with the
free end forming a spring contact portion, the other end
electric disc, said disc being rotatably mounted in said
of each blade being bent at right angles to form an inner
contact portion, one of said blades having an electrical
contact area, said contact blades being mounted on a di
connection to the inner wall of said socket portion, a re
electric disc, said disc being rotatably mounted in said
cess behind said disc, said electrical connection comprising 25 contact portion, one of said blades having an electrical
a conductive strip extending vertically into said recess
connection to the inner wall of said socket portion, a re-'
through a bottom wall thereof, the lower end of said strip
cess behind said disc, said electrical connection comprising
extending laterally into said socket portion, a ‘conductive
a conductive strip extending vertically into said recess
coil spring surrounding the vertical portion of said strip
through a bottom wall thereof, the lower end ‘of said strip
in said recess and resiliently contacting the inner contact 30 extending laterally into said socket portion, a conductive
contact area, said contact blades being mounted on a di
portion of said one of said blades, a switch mounted in
coil spring surrounding the vertical‘ portion of said strip
said housing opposite said contact portion, the other of
in said recess and resiliently contacting the inner contact
portion of said one of said blades,’ a switch mounted in
said blades having an electrical connection-to one side of
said switch, and a contact member in said housing having
said housing opposite said contact portion, the other ‘of
an electrical connection to the other side of said switch 35 said blades having an electrical connection to one side of
and having a resilient portion inaxial alignment with said
socket portion, said switch comprising a rotatable barrel
member having a slotted inner end, a spring mounted in
said barrel member, and a T-shaped contact member have
said switch, said switch connection comprising afZ-shaped
strip of conductive material having a vertical portion cong
tacting said switch, a horizontal portion ,contactingsaid
housing, a second verticalportion-extending beneath said
ing its vertical leg in said spring and its horizontal portion 40 other contact blade, and a coil spring surrounding said
in said slotted end, said horizontal portion contacting said
second vertical portion and resiliently contacting the inner
electricalconnections to said vother of said blades and to
contact portion-of said other of said blades, anda con
tact member in saidthousing having an electrical connec
tion to the other side of said switch and ‘having aresilient
said contact ‘blades, contact member, electrical connec
tions, ‘and switch being locked in said housing by interen 45 portionvinaxial alignment with said socket portion, said
. said contact member on rotation of said barrel member,
gaging portions of said parts and said housing.
6. Anight light comprising a dielectric housing hav¢
switch comprising a rotatable barrel member having a
slottedinner end, a spring mounted in said barrel mem
ber, and ‘a T-shaped contact member having its vertical
ing a socket portion extending therefrom, a contact por-‘
tion extending from said housing at right angles to said
leg in said spring and its horizontal portion in said slotted
socket portion, a pair of contact blades mounted in said 50 end, said horizontal portion contacting said electrical
contact portion, each contact blade comprising an elon¢
connections to said other of said blades and to said con
gated‘contact portion reentrantly bent at the thrust end
with the free end 'forming a spring contact portion, the
other end of each blade being bent at right angles to form
tact member on rotation of said barrel member, said con
tact blades, contact member, electrical connections and I
switch being locked in said housing by interengaging por
an inner contact area, said contact blades being mounted 55 tions of saidparts and said housing.
on a dielectric disc, said disc being rotatably-mounted in
said contact portion, one of said blades having an electrical
References Cited in the ?le of this patent
connection to the inner wall of said socket portion, a
switch mounted in said housing opposite said contact por
tion, the other of said blades having an'electrical connec 60
tion to one side of said switch, said switch connection
comprising a Z-shaped strip of conductive material hav
ing a vertical portion contacting said switch, a horizontal
portion contacting said housing, a second vertical portion
extending beneath said other contact blade, and a coil 65
spring surronnding‘said second vertical portion and re
,
1
UNITED STATES PATENTS
810,244
. Wright ______________ __ Jan. 16, 1906
2,101,680
2,166,790
2,257,506
2,292,088
2,477,387
Johnson _______________ __ Dec. 7,
Benander _____________ __ July 18,
MacDonald __________ __ Sept. 30,
Benander ____________ __ Aug. 4,
Mestitz _____________ __ July 26,
1937
1939
1941
1942
1949
2,707,733
Steinharter ____________ __ May 3, 1955
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