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Патент USA US2120879

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vJune'14, 1938-.
F. WEAR :E-l‘ AL'
2,120,879
LAMP SOCKET
Filed Aug“ 31,_ 1937
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2,120,879
4 Patented June .14, 1938 '
‘PATENT OFFICE
UNITED) STATES
2,120,879
LAMP SOCKET
1.
Frank Wear and Alexander K. Whyte, Toronto,
Ontario, Canada, assignors to General Electric
Company, a corporation of New- York
Application August 31, 1937, Serial No. 161,266
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In Canada December 24, 1936
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3 Claims. (Cl. 173-328)
. Our invention relates tov lamp sockets, and
more particularly to sockets adapted for use with
tubular lamps of the type having a separable
contact cap at each end. "
5
v
An object of our invention is to provide a socket
which may lbe readily manufactured and assem
bled at allow cost.
is curved to cooperate with the contour of the
contact cap i2, and the sides thereof are given a
taper I9 adjacent the end,, for the purpose of
allowing a large size tubular lamp the full amount
of lateral movement.
A substantially‘ U-shaped - 5
metallic contact clip 20, designed. to always give
an inward- tension is adapted to ?t within the '.
'
-A further object of our invention is to provide opening iii in leg I5, and the bottom ofithe clip
a socket capable of accommodating lamps of both , is provided with an integral lateral extension 2i
10 large and small ‘diameters, and further adapted
for both ?ush ‘and surface mounting.
Y.
_ Another object-of our invention is to provid
-‘ different positions, and to permit through wiring
‘
Another object of our invention is to provide a
‘ socket readily adaptable to all methods of mount
)0 ing the lamps of the character described,_ and
' one which is simple in construction and serves
- to readily connect a lamp in circuit and to hold
What we consider to be novel and our inven
25 tion will be better understoodby reference to the
screws 26 entered in threaded holes in the bottom ‘
_ face of foot ii. .The insulating sheet 25 is aper
tured as at 21 to permit access to the terminal
screw 22, and the bottom face of foot I1 is cut 205
away or recessed as at 28 to accommodate the
sheet
25.
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box 30 formed of molded insulating material and
adapted to be secured to the bottom face of the’ 25
following speci?cation and appended claims when
body It. The cover” is shaped to conform
considered in connection with the accompanying
generally with the conformation of the foot I‘! .
drawing in which
Fig. -1 is a view of a tubular lamp mounted in a
20 pair of sockets of our invention.
Fig. 2 is an exploded perspective viewof a
socket.
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Fig. 3 is a sectional view of the socket.
Fig. 4_ is a plan view of the terminal cover," and
-
contact clip 20. The clip is secured in the open
ing l6 by means of a sheet of ?brous insulating 15
material 25 secured> to the body M by suitable
In Fig. 4 we have shown a terminal cover or
the lamp securely in position.
35-
in a suitable threaded aperture formed therein.
The bottom face of the foot I1 is suitably recessed
as at 23 to accommodate the extension v2i on
agsocket of the type speci?ed with a readily as
sembled terminal cover, the cover and contact
15' terminal being arranged to permit easy wiring in
if desired.
through which a terminal screw 22 is threaded 10
Flg.'5 is a view illustrating the flush mounting
of the socket ,of our invention. .
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of body It, but extends laterally therebeyond
adjacent the lower end of the leg l5. Rectan
gular bosses 3|‘ extend upwardly from theselat~ 30
eral extensions and are spaced‘ apart the width
' of the body It.
The cover 30 is provided with a .,
through aperture 32 arranged to register with
the threaded aperture It in foot ll, whereby a
suitable screw 32a may be employed to secure as
the cover 30 to the body- It. An aperture 33
Referring to the drawing It indicates a tubular
extends through each of the rectangular bosses
lamp of cylindrical shape having a ?lament _II
3] for the reception of suitable screws or bolts
‘ extending from end to end and connected at » for securing the cover 30 and body‘ H to a sup
so each end to a ferrule (not shown). To connect
lamp ‘ill’ in an"electrical*circuit, contact caps l2
are provided at each end which separably engage
porting surface. The cover is formed hollow’ in- 40
teriorly and the side walls thereof are formed
thin at portions thereof to provide. knockouts 24 l ;
the ferrule in the end -of the lamp, as is now .for the reception of the circuit‘ wire or wires
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known in ‘the art, and which are adapted to co; connected‘ to the terminal] screw 22.
In Fig. 5 we‘ have illustrated the flush mount- 45
‘5 operate with'the sockets like! our invention,
,
each. cap having projecting spring ?nger con
‘ tacts. l2d which engage the contact'clip in the
ing of the socket of our invention through- a-sheet
of ‘facing material 35 in which a rectangular
socket thus connecting the ferruleat the‘ end of
aperture is cut to accommodate-the leg ii of
the lamp to the socket cont'act' clip. _
go
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Socket “comprises a body I! L_-shaped in
cross section. of molded insulating material, the
leg I! of which is formed with ,a substantially
‘rectangular opening l6 .therethrough,‘ and the
body II. The socket is secured in "position by
means ofv a screw 38 arranged to pass through so
an aperture in the facing" and to engage the
threaded aperture ill in foot II. For surface
mountingv it will be‘ understood that the socket
of our invention may be secured to the support
foot. I‘! of .which is provided with a threaded aper-n
l‘ ture 'll- therethrough. The upper end of leg l5vv ing surface by means of screws 31 (Fig. 1) pass- 55'
re
2
2,120,879
ing through the openings in the bosses 3i of
cover 30.
The circuit wiring is illustrated in Fig.
5 by the wires 38 passing through the knock
outs 34.
It will be observed that, as illustrated in the
drawing the body M and cover 30 are formed
to provide-a substantially ?at rear surface 40.
This feature of the socket of our invention is
useful, when two of the sockets are mounted back
10 to back to permit the abutted mounting of suc
cessive lamps. Moreover the taper on the upper
end of leg l5 and the length of the leg permits the
employment of this socket with tubular lamps of
varying diameters.
When the sockets are ?ush
15 mounted the securing screw is hidden beneath
the lamp when the lamps are mounted in the
socket.
While we have-disclosed herein a particular
embodiment of the socket of our invention we
20 do not wish to be limited thereto, but aim in the
appended claims to cover all such modi?cations
as fall within the true spirit and scope of our in
vention.
I
What we claim as new and desire to secure by
25 Letters Patent of the United States is:
1. A socket for use with tubular lamps which
comprises a substantially L~shaped body of in
sulating material having a rectangular aperture
said foot and having an aperture therein whereby
said sheet secures said clip against said body
while affording access to said terminal screw
through said aperture, a terminal cover box
having a vertically extending aperture there
through registering with said threaded aperture
in said foot,v said box having laterally and up
wardly extending portions arranged to fit against
the sides of said body adjacent the lower end of
said leg, and means extending through the aper 10
ture in said box and engaging the threaded aper
ture in said foot for securing said box against
the bottom surface of said body.
3. A socket for use with tubular lamps which
comprises an L-shaped body of insulating ma 15
terial having a leg and a foot, said leg extending
a substantial distance above the upper surface
of said foot and having a rectangular aperture
extending upwardly therethrough, said foot hav
ing a threaded aperture therethrough, a metal 20
lic contact clip ?tted within said‘ rectangular
aperture and having an integral laterally ex
tending portion engaging the bottom surface of
said foot, a terminal screw threaded in said lat
erally extending portion whereby said clip may 25
be connected to an electrical circuit, a sheet of
insulating material secured to the bottom sur
face of said foot and having an aperture therein
extending through the leg thereof, a metallic con
whereby said sheet secures said clip against said
30 tact clip ?tted within said aperture and'hav
body while aifording‘ access to said terminal
ing an integral laterally extending portion ar
screw through said aperture, a terminal cover
ranged to abut the bottom ofsaid body, means 1 box having a vertically extending aperture there
for connecting said clip to an electrical circuit, through registering with said threaded aperture
a sheet of insulating material secured to the bot
in said box having, laterally and upwardly ,ex
tom of said body arranged to hold said clip in tending portions arranged to ?t against the sides
said aperture and. having an aperture there
of said body adjacent the lower end of said leg,
through permitting access to said connecting and means extending through the aperture in
means, and a terminal cover box secured to the said box and engaging the threaded aperture in
lower face of the foot of said body and having said foot for securing said box against the bot40 portions thereof extending upwardly adjacent tom surface of said body, said body and said box
the lower end of said leg.
being formed with a flat side, said box having
2. A socket for use with tubular lamps which side walls formed thin ata plurality of points
comprises an L-shaped body of insulating mate
whereby the material thereof may be broken
rial having a leg and a foot, said leg extending a away at said points to form wiring channels, said
45 substantial distance above the upper surface of laterally and upwardly extending portions of said
said foot and having a rectangular aperture ex
box having apertures therethrough whereby said
tending upwardly therethrough, said foot having socket may be secured to a supporting surface
, a threaded aperture therethrough, a metallic
contact clip ?tted within said rectangular aper
50 ture and having an integral laterally extending
portion engaging the bottom surface of said foot,
a terminal screw threaded in said laterally ex
35
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40
45
by means of a pair of screws, and said threaded
aperture in said foot providing means whereby
said socket may be secured beneath a facing ma 50
terial by means of a screw‘ engaging in said
threaded aperture.
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tending portion whereby said clip may be con
nected to an electrical circuit, a sheet of insulat
55 ing material secured to thebottom surface of
ALEXANDER K. WI-IYTE.
55
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