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Патент USA US2135534

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'
Nov. 8, 1938.
' J. M. ROPER
'
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ELECTRIC
2,135,534
SOCKET
Filed Aug. 4, 1936
a
a
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|HVE>NTOR
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‘
By JOHN M. POPE’? '
ATTORNEY
Patented'Nov. 8, 1938 _‘
_ {2,135,534
/
' UNITED STATES‘ PATENT OFFICE
John
no.
Applicatioi;
_
i,(No. 94,182. I
(Granted under theact of March 3, 1883, as
' amended April 30, 1928; 370 O. G. 757)
This invention relates to a single contact elec
having the stranded wires l8 therein. A ferrule
tric socket and has for an object to provide im
I! having an outwardly extending ?ange 20 is
proved electrical sockets especially useful on air
secured on the upper end of the metal cable con
craft, both of the lighter and heavier than air duit IS. The stranded wires II are soldered as
5 type, where the economy of space and weight are at 2| into a terminal 22, the terminal 22 being .
desirable features.
-
.
A further object of this invention is to provide
formed on an insulating collar 23, it being ob- '
served that the cable I’! and stranded wires l8
an electrical socket especially adapted for holding - extend through the center of the collar 23 and
electrical lamps of the bayonet joint type for use that the diameter of the collar 23 is such that it
_ 10 on vehicles of all descriptions, both vehicles used will just snugly and slidably fit within the socket 10
in the air, on the ground, on the water, and under
II. A compression spring 24 placed between the
the water.
-
'
'
a further object of this invention is to provide a
lamp socket occupying a minimum amount of
16 space and weight which will be especially useful
on vehicles such as aircraft, and more particu
larly, on the wing surfaces and edges, so as to
receive and hold a lamp in such positions with
out seriously affecting the. aerodynamic charac
20 teristics of the wing surfaces.
A still further object of this invention is to pro
inturned ?ange l5 of socket II and the ?ange 20
of ferrule l9 urges theinsulating collar 23 and
terminal 22 against the lamp contact I‘.
The invention thus constructed is extremely 16
light inv weight and at the
only a minimum of space,
extremely desirable when
When used in running lights,
same time occupies
which features are
used on‘ aircraft.
as on wing surfaces,
' the lamp is held close to the wing surface to cause 20
vide asingle contact lamp socket in combination
with a metal covered conduit cable wherein the
metal cover on the conduit cable acts as a ground
:5 or return lead for the circuit.
A still further object of this invention is to pro
vide an electrical socket wherein the contactor
terminal is yieldably held against the lamp termi
nal and the necessity for a surplus amount of wire
20 normally present with yieldable contacts is elim
a minimum of interference with the aerodynamic
characteristics thereof.
\
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As an exempli?cation of- the manner in which
this invention is applied, the socket II is pro
vided with-an outstanding collar 25 provided with 25
a shoulder, as at 26. A nut‘ 21 passes over the
collar 25 and holds a globe re?ector foundation
' 28 thereon by means of the threaded neck 28
extending therebelow, the neck 29 being pro
vided with a kerf 30 ?tting over a key 3| so as 30
inated as a result of the improved features of this ‘to properly position the foundation 28 against
invention.
rotation.
A still further object of this invention is to pro
vide an electrical socket in which the lamp is
_ I6 ?xedly secured and in which the terminal end of.’
the conductor cable is yieldably. held by a com
pression spring acting between a terminal insu
lation member and an inturned ?ange on the
socket.
do
.
‘
With the foregoing and other objects in view,
the invention consists in the construction, combi
nation and arrangement of parts, as will be de
scribed more fully hereafter.
‘
In the drawing:
45
‘
r
'
'
The single ?gure is a sectional view of the in
vention.
A
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There is shown at I l! the electrical socket of
this invention. This electrical socket includes a
socket member ll shaped-preferably as shown,
‘0 having bayonet slots l2 to provide for the re
ception of the base of a conventional single con
tact electric lamp IS, the lamp it having its con—
tact as at I‘. The lower end of the socket II is
intumed as at I5, and through the socket H ex
I‘ tends the conduit Ii for the conductor cable I‘!
-
A re?ector 32 is snapped over an internal neck
33 of the foundation 28 while a globe 34 is
threaded into an external neck 35, a cushioning 35
washer 36 being provided for the globe 34 to seal
thereagainst. Lamp sockets with ?xed conduc
tor terminals and yieldable lamp terminals have
been used for above?purpose, but it has been
found that the vibration thereof induced during ‘10
?ight caused the contacts to wear away so quickly
that the lamp soon fails to light. With the ar
rangement of thisinvention, however, such ob-‘
jectionable vibration has been eliminated.
,
Other modi?cations and changes in the pro
portions and arrangements of the parts may be
made by those skilled in the art without depart
ing from the nature and scope of the invention,
as defined in the appended claims.
50'
The invention described herein may be manu
factured and used by or for the Governmentof _
the United States of America for governmental
purposes without the payment of any royalties,
thereon or therefor.
55
2,185,684
Having thus set forth and disclosed the natur - member having an inturned apertured ?ange at
of this invention, what is claimed is:
one end thereof, the other end of said socket be
ingprovided with lamp base securing means, an
'
1. An electric lamp socket comprising a socket
electric cable conduit extending through said
‘member having an inturned apertured ?ange at
' one end thereof, the other end of said socket be
ing provided with lamp base seeming means, an
' electric cable, conduit extending through said
apertured ?ange into said socket, a ferrule se-_
cured on the end of. said cable conduit within
10 said socket, said ferrule having an out-turned
?ange at the end thereof, ,a compression spring
located‘ between said ferrule ?ange and said in-
apertured ?ange into said socket, a ferrule se- ,
cured on the end of said‘ cable conduit ‘within
said socket, said ferrule having an out-turned
?ange at the end thereof, a compression spring
located ‘between ‘said ferrule?ange and said in
turned socket ?ange, an insulating member rest 10
ing against said ferrule ?ange, a conductor cable
I extending through said cable conduit and into
turned socket?ange, an insulating member_rest
ing against said ferrule ?ange, a conductor cable
16 extending through said cable conduit and into
' said insulating member, and a cable terminal
extending above said insulating member, said
'cable being secured to said terminal within said
insulating member, ‘whereby said cable conduit
20 is yieldably secured to yieldably press said cable
terminal against a lamp contact in the lamp
base adapted to be held at the lamp‘ end of the
,1 socket, said cable including an insulation covered
strandedv conductor wire extending therethrough,
the end of said conductor wire being soldered
within Said terminal.
2. An electric lamp socketlcomprising. a socket -
I said insulating member, and a cable terminal ex
tending above said insulating member, said cable
being secured to said terminalwithin said insu 16.
lating member, whereby said cable conduit is
yieldably secured to yieldably press said cable
terminal against a lamp contact in the lamp base
adapted to be held at the lamp end of the socket,
said conductor cable including an insulation
covered stranded conductor wire extending there
through, the end of said conductor wire being
soldered within said terminal, the inturned aper
tured ?ange of said socket member being an
integral part thereof.
_ JOHN M.' ROPER!
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