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Oct- 1, 1945-
Search Room
Filed Sept. 30, 1944
Carl 1i. Hasen Wink/e
Patented Oct. 1, 1946
Search Room
' E
Carl A. Hasenwinkle, Bison, S. Dak.
Application September 30, 1944, Serial No. 556,510
1 Claim.
(Cl. 173-361)
This invention relates to certain new and use
other side, and between this shoulder and the
outer edges of the separating member I! the
base ?anges l8 and I‘! of the prongs lid and Ila
ful improvements in plug-in connectors, and
more particularly to the arrangement of the wire
terminals and the metal connector prongs, where
are arranged.
by the screws which secure the base oil the prongs
to the insulating body of the connector will be
under constant pressure from the wire terminals,
so that they will not come loose, and the prongs
These prongs are thus con?ned against lateral
displacement by the shoulders I‘ and I5 and by
the outer edges of the separating member l2,
and the base ?anges are secured in place by
will be more ?rmly held in place on the insulat~
means of the screws I 61) and I'll), which are
ing body.
10 threaded through screw holes it’ formed in the
Another object of the invention is to provide a
base ?anges and into the body I.
plugin connector with an integral insulating par
The base ?ange I8 is provided with a binding
tition for separating the wire terminals, and fur
screw lie, which is formed with a relatively large
ther to provide relative deep pockets on the op
head, and the base ?ange I1 is provided with a
posite sides or the partition, which securely an 15 binding screw llc, which is also provided with a
chor the base ?anges of the prongs against lateral
relatively large head. These screw heads are lo
cated below the outer surface of the separating
With the above and other objects in view the
member I 2, and the integral partition or out
standing rib l3, extends outwardly of the heads
structions, combinations of parts and relations 20 of the binding screws and the adjacent outer
between the parts, clearly described in the fol
faces of the separating member I!’ thew
lowing speci?cation and fully illustrated in the
drawing, in which:
20, w c
e ormed with slots washers
I a and IS
20aa t
invention consists in certain new and useful con
réceivethe'prongslmiiiif?it'qrhe'se ‘washers
Fig. 1 is a central sectional view, taken on
line l-l of Fig. 2, looking in the direction of the 25 are formed with straight inner edges 19' and 20',
adapted to ?t against the sides of the central
partition or rib l3, and with convex curved outer
Fig. 2 is a bottom plan view, showing the insu
edges l9" and 20", adapted to ?t against the
lating face pieces removed.
marginal rim II.
Fig. 3 is a, central sectional view, taken on line
3-4 of Fig. 2, looking in the direction of the 30 A wire terminal II is extended from the wire
passage 1 across the head of the holding screw
16b, of the base ?ange l8, and. the wire end
Fig. 4 is a detail plan view 01' one of the con
thereof is clamped in place by the binding screw
ductor prongs.
Fig. 5 is a detail perspective view of one of the
The connector prong of each base ?ange ?ts
insulating pieces or washers.
closely against the straight edge of the separating
Fig. 6 is a perspective view.
member, and when clamped in place by its con
necting screw will be braced against this sepa
Referring to the accompanying drawing which
illustrates the practical construction of my in
vention 5 designates a body formed of suitable
insulating material, and constructed with a cen
tral wire receiving opening 6 and with separating
wire passages ‘I and 8 which lead from this cen
rating member.
The insulating sheaths oi the conductor wires
are nested in the pockets 9 and It. on opposite
sides of the central partition, so that these wire
sheaths cannot have physical contact with the
tral opening and communicate with the pockets
c‘ompanion plug-in connector or wall socket, in
9 and Ill adjacent to the inner side of the plug-in
45 which the connector prongs are forced, and the
connector body 5.
wire terminals will not be disturbed or displaced
The inner side of the plug-in connector body
by use.
5 is formed with a marginal rim II and is pro
The insulated wire extends from the outlet hole
vided with a separating member l2, which is
of the wire passage around the outer side of the
shown with an integral partition l3. This sepa
rating member I! may be formed integral with 50 prong to engage the binding screw, and the prong
is thus held under the pressure of the wire against
the body 5, or made of a separate piece and ce
the adjacent straight edge of the separator.
mented or otherwise attached to the central por
tion of the body 5.
This arrangement makes it dii'licult, it not im
possible, for the frayed ends of the wires to cross
The body 5 is also formed with a shoulder ll
‘ on one side and a similar shoulder It on the 55 from their binding screws and establish con
ductive contact with each other, and thus short
the circuit through the wires.
Should the wires be pulled from their binding
posts, for any reason, they will leave the con
hector body in the form of a Y, so that conductive
contact between the wires will not take place.
The marginal rim of the body serves to take
dentally pulled- out of the connector, the wire
ends would not be brought together to short the
circuit, but would leave the connector body in
diverging relation, so that accidental contact may
be prevented.
It is understood that various changes may be
made within the scope of the invention as de?ned
up any thrust imposed on the plug-in connector.
in the claim forming a part of this application.
when the prongs are forced into the slots of the
Having described my invention I claim':
receiving socket or wall connector member, not 10
A plug-in electrical connector, comprising a
body formed fronininsulationrm?terial and pro
The separating member is formed with a recess
vided‘wit?'i'afsocket in one side thereof to receive
l2a to receive each head of the binding screw.
the end of an electrical cord and wire passages
The adjacent edge of this recess at l2a' is concave,
diverging from said socket to thebppos'itfside
and acts to limit the outward play of the frayed 15 of’lsaid body, said body having open wells sur
end of the wire, so that it is more readily forced
rounding the outer ends of said divergent wire
under the wide head of the binding screw and
Passages and stielgiraulamcketunjach side
retained in clamped position, since this concave
of said body and an integral partition,_a,connegtor
edge l2a.’ acts both as a guide for inserting the ‘ prong having a base snugly ?tted ineach well and
wire end under the clamping screw head and as 20 a pronrai‘niipifo'jecting at right angles to said
a stop to limit the outward displacement of the
W said wells having a right angular
frayed wire from the clamping screw. If desired
shoulder engaged by its prong arm, a screw
the wire may be curved away from the prong.
threaded through each base into said body to hold
The other wire terminal 22 is extended from
each connector prong in place, and a semicircular
the wire passage 8 across the outer side of the 25 washer of insulatingwmnatgial ispose 1n eac
prong flange and its clamping screw Ha, and is
s‘emicl?s'wc?ét?and p'r'ov'W
e "witl'i‘amslot
retained in place by the binding screw No.
througrwhichwthe prong arm thereof projects,
It will be seen that I have designed a plug-in
the inner edge of each washer engaging the side
connector which prevents the circuit wire ends
of said partition and both washers being disposed
from having conductive contact with each other 30 flush with the outermost surface of the body ad
to short the circuit, that the prongs are reinforced
jacent thereto. .
by the manner of installing them in the connector
body, and that should the electrical wires be acci
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