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Oct. 1, 1946.‘
'
J. F. O’BRIEN ‘
.
2,408,443
ADAPTER U‘NIT FOR ELECTRIC WIRING SYSTEMS
Filed Dec; ‘31, 1945.
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Oct. 1, 1946.
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"J.F.<>’BR|EN
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ADAPTER UNIT FOR’ ELECTRIC WIRING SYSTEMS
Filed Dec. 31, 1943
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INVENTOR
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2,408,443
Patented Oct. 1, 1946
UNITED‘ STAT Es? PATENTYEOFFICE
‘ADAPTER UNIT FOR ELECTRIC WIRING
SYSTEMS
‘7
‘
.
-
.
Joseph F. 'O’BriemJersey City, N. ., assignor to
, John B. Pierce Foundation, New. York, N. Y., a
corporation of New York
,
Application December 31, 1943, Serial No. 516,347 .
"
7 Claims. , (01. 173-230)
’
turemay be supported upon the conductor block,
and its respective terminals secured to the up
This invention relates to electric wiring de
vices, and particularly to adapters by'means of
wardly extending posts of the terminals of said
conductor block. By aperturing said upwardly
extending posts,the screws with which outlet ?x
which a standard form of outlet ?xture may be
employed in a wiring system of the type dis
closed and claimed in my copending application
ture terminals are conventionally equipped, may
Serial No. 398,030, ?led June 14', 1941, which has
be passed through the apertured posts to secure
matured into Patent No. 2,351,631, issued June ' them to the terminals of the outlet ?xture.
20, 1944. Such, wiring system» embodies a‘ suc
The conductor block and the outlet ?xture may
cession of standardized conductor units, electri
be assembled and dropped into position within
cally and mechanically interconnected in seria
the housing, whereupon the closure of the hous
tim to provide a wiring system’ of any desired
ing, when positioned and secured, accurately lo
length.
cates the outlet and conductor block assembly
It is an object of the present invention to pro
within the housing in registry with a suitable
vide a unit capable of electrical and mechanical
opening through the outer wall of the hollow
15
interconnection in seriatim; with other units. In
such unit may be incorporated any form of stand
Other features and advantages will hereinafter
ard outlet ?xture which may have special at
housing.
appear. 1 -
tributes as desired, such as locking means for
holding the attachment plug of an electrical ac
>
f
,
~
v
In the drawings; '
Fig. 1 is a side elevation of an embodiment of.
cessory against accidental removal. A standard 20 the invention, with the wall of the housing shown
Hubbell “twist-lock” ?xturewis typical of those
in section to disclose the structure therein;
specialized commercial ?xtures which may be
_ Fig. 2 is a plan,view of an embodiment of the
employed in the present invention, although it is
invention;
to be understood that the present invention is
is a .bottom view of the unit with a por
not limited to association with any one type of 25 Fig. 3 the closure plate of the housing broken
‘ tion ' of
outlet
?xture.
_
.
-
r
A preferred embodiment of the invention com
prises a hollow housing or cap member of such'
'
electricity conductors on the
underside of the conductor block;
, away to disclose the
~ Fig. 4 is a, vertical section taken on
lines 4-4
internal capacity as to receive, completely within
Fig. 1;
itself, the desired outlet ?xture. Removably as 30 of Fig.
5 is, a‘ bottom view ofthe outlet ?xture
sociated with said housing, to provide a closure
positioned within the housing, with the bottom
for the otherwise open rear thereof, is a closure,
plate of the ?xture removed to show the electric
so correlated with the housing as to form a male ‘
ity conductors, of such ?xture; and
end and a female end for association with the
Fig. 6, is an exploded perspective of the com
complementary ends of the adjacent units of the
pleted structure, showing the relative associa
wiring system.
»
.
tion of the elements thereof.
Said closure has its inner surface shaped to
_ Referring to the ‘drawings, theillus‘trated em
receive and position a conductor block compris
bodiment of the invention comprises'a hollow}
ing a suitably formed plate of insulation material, on the bottom of which are the desired plu
rality of electricity conductors, preferably of ?at
cross section intermediate their ends for ?rm
securement to the underside of the plate. At
their respective opposite ends are terminals for 45
connection with the terminals of the adjacent
wiring units.
’
On the opposite face of saidconductor plate
are terminals of suitable shape, mechanically and
electrically connected to the aforementioned con
ductors by rivets or other appropriate means. 50
Each of said terminals has an upwardly extend-'
ing post arranged for connection with a corre
cap member l0, a‘closure ll therefor, a con
ductor block l2 and an outlet ?xture I4 asso
ciated therewith. As shown in Figs. 1 and 4,
the closure I I preferably ?ts within the side walls
of the housing [0 and receives and supports the
conductor block l2.
~
The cap l0 and‘closure H are so con?gurated
as to provide a male end l5 and female socket
I6 respectively complementing a female socket
and male end of wiring units I‘! and I8, shown
inrbroken lines in Fig. 1 and Fig. 2.
Conductor'block [2, see Fig. 6, includes a base
26, preferably molded of insulation material such
as: “Bakelitef’and the ‘ like; ' and in spaced, rela
sponding terminal member of the outlet ?xture
tionship On one face, illustratively the underside
to be used therewith.’
of said base 'are the desired plurality of con
55
The‘parts are so arranged that the outlet ?xe
2,408,443
3
.
doctors, illustratively three, numbered 2|, 22, 23.
Said conductors may be tubes or rods of copper
or brass, ?attened intermediate their ends to rest
?rmly against the surface of the base 20. At
one end, each conductor extends to provide a
male connection end, and at its opposite end,
each conductor has secured thereto a ‘socketto
body of ?xture 14, support the same clearably
above the conductors of the conductor block.
Whereas I have described my invention by ref
erence to speci?c forms thereof, it will be under
stood that many changes and modi?cations may
be made provided they do not depart from the
scope of the claims,
'
,
receive the male connection of an adjacent cone
I claim:
ductor unit, whereby a series of units may be elec- ,
1. A unit of an electric Wiring system embody
trically interconnected in conjugate relationship. l0 ing conductor units arranged for electrical and
The upper face of the block Zllphas suitable up
‘mechanical interconnection in seriatim, compris
standing side walls Zila, 2%, see Fig. 6, and care
ing a conductor block having electricity con
ries lugs usually correspondingI in number to the
ductors disposed on one face thereof in mutually
number of conductors.
'
~
'
The respective lugs 24%, 25;?6 ‘arepreferably.w
stampings of relatively heavy brass or copper,
and have a base portion and an upstanding, post
‘22a, 25a and 26a, respectively. A rivet passing
through a lug, the base 28, and a conductor,‘
electrically connects said lug to the conductor
and ?xes the lugs and conductor securely on
opposite sides of the base Zll.
‘ As appears in Figs. 4 and 6, the upstanding
wall formations 2?, 2B and 29, SE! at the ends of
the closure ii operate to separate the terminals
at the ends of the conductors 2!, 22, 23 by de
channels within which said terminals are
individually con?ned. Centrally of the plate H
are relatively lower walls, 3! , 32, see Fig. 4, which,
per saprovide a surface upon which the con
ductor block l2 may be supported, The plate H
is also provided with insulating walls which, being
positioned between adjacent conductors, form
electrically isolated chambers for the respective
conductors.
'
The outlet ?xture M is typical of any standard
commercial unit supporting within a block of
insulation material two or more contacts for con
nection to the blades of an attachment plug. The
insulated; spaced relationship and having termi
‘ vrials extending from each end of said block, elec
trically conductive lugs disposed on the opposite
face of said conductor block and mechanically
and electrically interconnected with said con
ductors, an outlet ?xture having connection ter
minals mechanically and electrically connected
to said lugs; a cap member to removably receive
said interconnected ?xture and conductor block,
and a closure member for said cap, said closure
member supporting said conductor block in oper
ative position, and having spaced longitudinally
extending walls at each end to provide channels
for. individually receiving the extending terminals
of said conductors, and having, intermediate its
ends, spaced longitudinallyextending walls to
provide channels for individually receiving the
said electricity conductors;
'
2. A unit of an electrical “wiring system em
lac-dying conductor units arranged for electric
and mechanical interconnection in seriaiim; said
unit comprising a housing having an open bot
tom and openings at its opposite ends adjacent
its open bottom; a closure member for the open
bottom of said housing; a block of electrically in
sulati‘ng material provided with parallelly ar
illustrated ?xture It is a three-contact terminal, 40 ranged grooves extending from its opposing ends;
for 220 volt heavy duty service such as is required
electrical conductors disposed in said grooves re~
for portable drills or other power tools employed
spectively; posts of electrical conducting mate
in industry.
1
.
rial secured to said insulating block and having
Such outlet?xtures have their respective con
extensions arranged to connect with said elec
tacts arranged for connection to power leads by ‘1"1
trical
meansconductors
disposed upon
respectively;
said insulating
electrical
block; and
means of bus-bars, as 33, 3'4, 35, respectively
terminating in vertical connection surfaces with
electrical terminals carried by said outlet means
which it is likewise conventional to employ bind
andccnn'e'ct'ed respectively with the contact ele
ing screws, as 33a, 34a, 35a,'to secure electricity
ments of said outlet means, said electrical tcr
conductors thereto.
~
minals being arranged to electrically connect
‘Pursuant‘ to the present invention, Vertical
with said posts respectively; said cover ‘enclosing
posts 24a, 25a, Eta'of the lugs 24, 25, 26 are posi-v
said insulating blocl'r,.said outlet means and the
tioned to ?t outside of, and in contact with, the
body portions of said electrical conductors, the
vertical connectionsurfaces of the respective bus
opposite end portions ‘of said electrical conduc
bars of the outlet ?xture. By providing a suit—
tors extending through the said opposite end
able aperture through each of the said vertical
openings of the cover.
posts, said apertures registering with the screw
threaded apertures in the bus-bars of the outlet
?xture, the screws thereof, ordinarily employed
- 3. A unit of an electrical wiring system ein~
bod-ying conductor units arranged for electrical
and mechanical interconnection in 'seriatim; said
to connect power-source leads to said terminals 60 unit comprising a housing having an open bottom
may be passed through the apertures of the re
and openings at its opposite ends adjacent its
spective posts 24a, 25a, 26a and into the connec
tion terminals of the outlet ?xture, thereby serv
ing to electrically connect the terminals of such
?xture with the conductors of the unit, and to
support and secure the outlet ?xture to the con
nection block l2.
Frequently, see Fig. 4, the body parts of elec
tric outlet ?xtures are secured together by means
of rivets 38 which pass through the body and at
tach to a metal plate 31 on the underside thereof.
To ‘eliminate any possibility of short-circuit of
such a metal plate with the respective conductors
of the conductor block, the walls 20a and 20b act
as spacers which, by engaging the bottom ofthe
open bottom; a closure member for.‘ the open
bottom ‘of said housing. said closure member be-x
ing' provided with parallelly arranged grooves ex
tending from its opposing ends; a block of elec
trically insulating material provided ‘at its bot
tom face with parallelly arranged grooves ex
tending from its opposing ends mating respec
tively with said grooves of said ‘closure member;
electrical vconductors disposed in- said grooves re_
spectively; posts ‘of ‘electrical conducting mate
rial secured to said insulating block and having
extensions arranged to connect with said elec~
trical conductors respectively‘; electrical outlet
means disposed upon-said insulating, block; vand
2,408,443
5
electrical terminals carried by said outlet means
and connected respectively with the contact ele
the cover.
6. A unit of an electrical wiring system em
ments of said outlet means, said electrical ter
minals being arranged to electrically connect ‘with
said posts respectively; said cover enclosing said
insulating block, said outlet means and the body
portion-5 of said electrical conductors, the oppo
site end portions of said electrical conductors ex
tending through the said opposite end openings
6
tending through the said opposite end openings of
bodying conductor units arranged for electrical
and mechanical interconnection in seriatim; said
unit comprising a housing having an open bot
tom and openings at its opposite ends adjacent
its open bottom; a closure member for the open
bottom of said housing, said closure member be
10
of the cover.
4. A unit of an electrical wiring system em
bodying conductor units arranged for electrical
and mechanical interconnection in seriatiin; said
unit comprising a housing havingr an open bot
tom and openings at its opposite ends adjacent
its open bottom, said housing at its said opposite
ends respectively having male and female for
mations thereat; a closure member for the open
bottom of said housing; a block of electrically‘ in
sulating material provided with parallelly ar
ing provided with parallelly arranged grooves
extending from its opposing ends; a block of
electrically insulating material provided at its ,
bottom face with parallelly arranged grooves ex
tending from its opposing ends mating respec
tively with said grooves of said closure member;
electrical conductors disposed in said grooves re
spectively; posts of electrical conducting mate
rial secured to said insulating block and having
extensions arranged to connect with said electri
cal conductors respectively; electrical outlet
means disposed upon said insulating block; and
ranged grooves extending from its opposing ends;
electrical terminals carried by said outlet means
electrical conductors disposed in said grooves re
and connected respectively with the contact ele
spectively; posts of electrical conducting mate
ments of said outlet means, said electrical termi
rial secured to said insulating block and having
nals being arranged to mechanically frictionally
extensions arranged to connect with said electri- - ' and electrically connect with said posts respec
cal conductors respectively; electrical outlet
tively; said cover enclosing said insulating block,
means disposed upon’i‘said insulating block; and
said outlet means and the body portions of said
electrical terminals carried by said outlet means
electrical conductors, the opposite end portions of
and connected respectively with the, contact ele
said electrical conductors extending through the
ments of said outlet means, said electrical ter 30 said opposite end openings of the cover.
minals being arranged to electrically connect with
7. A unit of an electrical wiring system em
said posts respectively; said cover enclosing said
bodying conductor units arranged for electrical
insulating block, said outlet means and the body
and mechanical interconnection in seriatim; said
portions of said electrical conductors, the opposite
unit comprising a housing having an open bot
end portions of said electrical conductors extend 35 tom and openings at its opposite ends adjacent
ing through the said opposite end openings of the
its open bottom, said housing at its said opposite
cover.
ends respectively having male and female for
5. A unit of an electrical wiring system em
mations thereat; a closure member for the open
bodying conductor units arranged for electrical
bottom of said housing; a block of electrically
and mechanical interconnection in seriatirn; said 40 insulating material provided with parallelly ar
unit comprising a housing having an open bot
ranged grooves extending from its opposing
tom and openings at its opposite ends adjacent
ends; electrical conductors disposed in said
its open bottom; a closure member for the open
grooves respectively; posts of electrical conduct
bottom of said housing, a block of electrically in
ing material secured to said insulating block and
sulating material provided with parallelly ar
having extensions arranged to connect with said
ranged grooves extending from its opposing
electrical conductors respectively; electrical out
ends; electrical conductors disposed in said;
let means disposed upon said insulating block;
grooves respectively; posts of electrical conduct
and electrical terminals carried by said outlet
ing material secured to said insulating block and
means and connected respectively with the cOn-,
50
having extensions arranged to connect with said
tact elements of said outlet means, said electri
electrical conductors respectively; electrical out;
cal terminals being arranged to mechanically
let means disposed upon said insulating block;
frictionally and electrically connect with said
and electrical terminal-s carried by said outlet
posts respectively; said cover enclosing said in
means and connected respectively with the con
sulating block, said outlet means and the body
tact elements of said outlet means, said electri 55 portions of said electrical conductors, the oppo
cal terminals being arranged to mechanically
site end portions of said electrical conductors ex
frictionally and electrically connect with said
tending through the said opposite end openings
posts respectively; said cover enclosing said in
of the cover.
'
sulating block, said outlet means and the body
JOSEPH F. O’BRIEN.
portions of said electrical conductors, the oppo
site end portions of said electrical conductors ex
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