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Патент USA US2123070

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July 5, 1938.
J. H. VAN VIERSENY
’
2,123,070
DEVICE FOR USE IN CONNECTING WIRE‘ ENDS
Filed Aug. 23, 1937
2 Sheets~Sheet l
/NVENTDR
Jacob Hendrik van Vie/"sen
57494404)
Attornev
July5, 1933-
J. H. VAN VIERSEN
2,123,070
DEVICE FOR USE IN CONNECTING WIRE ENDS
Filed Aug. 23, 1937
‘FIG.4;
2 Sheets-Sheet 2
FIG. 5.
INVENTOR
Jacuh' HQnEIPiK van ViEV'SEFI
BY
‘
ATTORN EY
Patented July 5, 1938
_
2.123.010
UNITED STATES PATENT OFFICE ‘
‘2,123,070
DEVICE FOR USE IN CONNECTING WIRE
ENDS
Jacob Hendrik van Viersen, vThe Hague, Nether
lands, assignor to Thabur, Industrieele en Tech
nische Handelmaatschapplj N. V., The Hague,
Netherlands
Application August 23,’ 1937, Serial No. 160,416
In the Netherlands July 1, 1936
11 Claims. (Cl. 173-263)
_ This invention relates to a device for use in
connecting wire ends which are preferably
twisted together, and is particularly suitable for
use when connecting cleaned wire ends of in
5 sulated wires. ,The device consists mainly of a
member provided with a number of openings,
through which the wire ends can be conducted.
Such devices are already known, but have the
drawback that the wire ends are buckled and
10' weakened and may even be torn off over the
edges of the openings during twisting.
One object of the invention is to meet this
To this end the outer surface of the member may
be totally or partly threaded and an insulating
cap, of “Bakelite", or porcelain, or the like can
be screwed thereon.
I
'
It is not always‘ necessary that the mandrel
form one unit with the member and the mandrel
can alternatively be arranged on the member as
a disconnectible part. In this case the mandrel
can at the same time be used for ?xing the‘
wire ends before twisting.
10
The ?xing of the wire ends before twisting
can further be facilitated by arranging the bores
imperfection and to provide a device‘, in which - or passages for conducting the wire ends near
. the wires are forced topass gradually into the
or in the outer wall of the member, so that longi
16' twist, so that no buckling or tearing off of the tudinal grooves or corrugations are formed in
15
wire ends can occur.
which the wires can be laid and which have '
In such devices however it is possible that the
wire ends during twisting are pulled further
such a depth, that ‘the inserted wires extend
through the openings. Therefore a further ob—
ject of'the invention is to provide a device in
which the wire ends are fastened against the
member before twisting.
A still further object of the invention is to
provide a wire connector, which is cheapin man
25 ufacture, is easy to handle, and is of compact
construction.
In order to prevent breaking of the wire ends
when twisting them above the ends of the bores
or openings. in the member and in order to sim
means of a ?xing ring screwed on the member.
0 plify the twisting, the member is preferably
provided with a conical mandrel, around or above
which the wire ends coming out of the openings
are twisted together. By the aid of the mandrel
the wire ends are gradually bent over the ends
3 5 of the openings and cannot be torn o? over the
edges.
In order to ensure that the wires will always
be gradually bent, the surface of the mandrel
may additionally be provided with grooves, end
40 ing at the ‘openings in the member. These.
grooves may be straight or curved. They are
preferably curved in such manner as to match
the twist of the wires.
If necessary the mandrel may further be pro
45 vided with a central bore for inserting an extra
wire endlwhich then may act as a spindle or
as an extension of the mandrel during twisting
of the wire ends to be connected and thus avoid
50
rupture during the twisting of brittle wires.
When the device according to the invention
is used for conductiveiy connecting current car
rying electric wiring it will be necessary, in order
to ‘avoid short circuits and danger of touching,
to provide the member and the twisted'wire
, ends extending above it with an insulating cap.
partially out of them and can be easily ?xed by
The extending wire parts, usually of soft copper 20
wire, are then threaded and clamped at the same
time, so that the wires are ?xedly held.
It is obvious, that if the wires are held in this
manner the subsequent twisting of the wire ends
will be simplified, as only the short wire ends are 25
movable with respect to the other parts of the
wires.
’
In order to lock the ?xing‘ ring, the wire sup
port is preferably provided with an abutment
such as a ring connected with the wire support
and against which the ?xing ring can be screwed.
'30
Preferably the height of the ?xing ring is equal
tothe height of the wire support from the abut
ment, so that a device is obtained looking like
one unit.
Particularly ' when
”
conductively
35
connecting
cleaned wire ends of insulated conductors it will
be of importance to make the wire support or
the fixing ring or both from conductive material,
so ‘that the conductive connection is already 40,
completed in the device itself.
The abutment of the wire support, as already
mentioned, may consist of a ring connected to
the wire support, which may be provided with
bores, through which the wire ends to be con 45
nected may be inserted and whereby they are
already held before arranging the ?xing ring.
Of course the outer surface of the ?xing ring may
be angular to facilitate fastening of said ring
by means of a screw wrench.
50
It is obvious, that by using the devices accord
ing to the invention, a large number of wires
can be connected to a conductive unit, even far
more than with the known devices. -When con
ductively connecting electric conductors, the de
v
2,128,070
an abutment for the sleeve II when the latter is
This may be done with insulating tape- or like screwed into locking position.
material. Preferably however it is effected by - g In the construction shown at Figs. 5 and ‘I an
means of an insulating cap or casing which is insulated cover I. is applied to an externally
screw-threaded fixing ring or sleeve II which is
screwed over the device.v
In order that the invention may be clearly internally screw-threaded for engagement with
understood, the same will now be described by an externally screw-threaded extension II on a
member l9 which latter serves as an abutment
way of example with reference to the accom
for the sleeve i1 and is formed with bores or pas
panying drawings, in which: ,
10
Fig. l is a side view, partly in section, oi a sages 20 for the reception of the wires while the 10
member with an insulating cap and a number of extension I. is provided with external grooves 2i
vice must be insulated after fastening the wires.
electric wires which are twisted over the mandrel, - in alignment with the bores Ill so that the ap
Fig. 2 is a vertical section of the member with plication of the ring or sleeve I‘! to the extension
l8 ?xes or clamps the wires in position. 0n the
mandrel and screw thread for the insulating cap,
extremity of the extension II a mandrel 2! is ll
Fig.3 is a top view of the member with man
16
drel.
provided and in the sides thereof grooves 23 are
Pig. 4 is a side view, partly in section, of a
further construction according to the invention,
Fig. 5 is a side view, partly in section, of a de
formed in alignment with and as continuations
of the grooves 2i and the ends of the wires are
twisted together over said mandrel 22 in the man
vice somewhat similar to that of Fig. 4, but with
out wiring, and showing a slightly modi?ed ar
ner clearly illustrated at Fig. 4:.v
As shown at Figs. 6 and '7, both these forms
rangement,
comprise centrally disposed bores 14 for addi
Fig. 6 is a bottom view of the inside member
of Fig. 4, and
Fig. 7 is a top view of the inner parts of Fig. 5
and shown partly in section.
Referring to Figs. 1 to 3 of the drawings, I is
the member provided with a number of bores or
passages I. These bores or passages need not
always run parallel to and axially of the member
I, but may run in diiierent directions according
to requirements and they may have diiierent di
ameters and need not be arranged in a circle.
In the form shown it may be assumed that the
35 device is used for the conductive connection of
cleaned wire ends of insulated electric wiring
comprising three thick wires and two twisted
thinner ones, which latter are introduced through
a single passage. The member i is provided with
a mandrel 3 with corrugations 4 beginning at the
ends of_ the passages 2. Above and around the
mandrel the wires are twisted together. The de
vice is closed by an insulating cap 8 arranged on
the threaded portion ‘I of the member I. An ex
tra passage which may be arranged through the
‘ centre of the mandrel is indicated at 5.
The member i according to the invention may
consist of wood, porcelain, "Bakelite” or like ma_
terial, but for the conductive connection of wire
ends of electric wiring it is preferably made from
conductive material, which may form a conduc
tive unit with the cleaned wire ends inserted
through the bores. 'I'he'mandrel may be made
irom the same material as the member I and it
may as shown form one unit with said member.
The insulating cap or casing may consist of por
celain, "Bakelite" or like material. In order to
simpliiy the application of the cap or casing, the
same may be provided with ?at external wall
portions, so that a screw wrench can be used.
In the construction shown at Figs. 4 and 6 the
cleaned ends 3 of the wires are introduced into
bores Iii extending through an externally screw
threaded member ii which receives an insulated
cover or cap I! correspondingly screw-threaded
at the interior thereof. An externally screw
threaded extension I3 is formed on the member
H and has parallel external grooves “- forming
70 continuations oi the bores i0 and adapted to re
ceive the wires 3. A securing ring or sleeve i5
is applied to the extension I! and is internally
screw-threaded to engage the screw threads of
said extension and to engage and grip the outer
.75 surfaces of the wires. The member H serves as
tional wires to be twisted together with the wires
in the outer bores in the manner above described
in connection with the form of the device as illus
trated at Figs. 1 to 3. The bores II and bores 2|,
described above, have continuous side walls so as
to surround completely the portions of the wires
which extend therethrough.
‘
The invention is not limited to the constructions shown and described andmany other con
structions are possible without departing irom
the invention. Thus for instance the depth of
‘the corrugations and the diametersaoi‘ the pas
sages ! may be different, so that wires of differ
ent diameters may be connected together.
Having thus described the invention, I claim:
1. A device for use in connecting wire ends,
comprising a cylindrical member with a plu
rality oi’ lengthwise bores therein having contin
uous side walls to receive the individual wires. a
substantially conicalmandrel at one end of the
member with its base located substantially in
alignment with the inner suriaces ‘of the bores to
receive the wires projecting from the said bores.
2. A device of the character described ior use
in connecting the ends of wires, comprising an
inner cylindrical member having external screw
threads, a plurality of bores extending lengthwise
through said member to receive the individual
wires to be connected, a tapered mandrel on one
end of said member and formed with grooves to
receive the wires protruding from the said bores,
the grooves being tapered from the said member
to the surface of the mandrel to direct the wire
‘ends towards each other for twisting together
without sharp bends, and an internally screw
threaded, cap applied to said member.
- 3. A device of the character described for use
in connecting the ends of conducting wires, com
prising a cylindrical member, a circular group
of wire-receiving bores extending lengthwise
through said member, a conical mandrel extend
ing from one end of said member within the cir~
cular group of bores, and tapered grooves in the
surface of the mandrel extending only part of
the length thereoi! to receive and lead the wires
from the said bores to the outer surface of the
mandrel towards the extremity thereof to direct
the wires towards each other without sharp bends, 70
and the wires being twisted together beyond the
extremity or the mandrel.
4. A device of the character described for use
in connecting the ends of conducting wires, com
prising an internal_ substantially cylindrical’
3
2,123,070
member, a circular group of bores extending
lengthwise through the member to receive the
wires to be connected, a mandrel of curved and
tapering form extending from one end of the
member within the circular group of bores, ta
pered grooves formed in the surfaceoi the man
drel with their surfaces aligned with the inner
surfaces of _ said bores, the mandrel and its grooves
being formed to lead the wires towards each other
10 without sharp bends, an additional bore formed
,in the center of the member and extending
lengthwise therethrough to accommodate an ad
ditional wire around which the ends of the ?rst
mentioned wires are twisted, and a cover for said
15 member to enclose the twisted ends of the wires.
prising a cylindrical externally screw-threaded
and longitudinally grooved member, an internally
screw-threaded locking ring upon said screw
threaded'member, a cylindrical abutment en
gaged by one end of the said ring, bores formed
in said abutment in alignment with the grooves
in the said member to lead the wires there
through, a conical mandrel on the end of the
said member, grooves extending only part of the
length of said conical mandrel and being con 10
tinuations of the grooves in said member to lead
the wires into position to be twisted together
without sharp bends.
9. A device of the character described for use
in connecting the ends of conducting wires, com
prising a cylindrical externally screw-threaded
5. A device for use in connecting wire ends;
comprising a member having bores with continu ' and longitudinally grooved member, an internally
ous side walls for the reception of the individual screw-threaded locking piece thereon, an abut
wires, an extension formed on said member, wire
ment piece formed on the member for engage
20 receiving grooves formed in the extension in line ment with the locking piece, an external screw 20
with said bores, a conical mandrel on the end thread on one of said pieces, an internally screw
of said extension to receive wire ends extending threaded cap for engagement with said screw
from said grooves twisted together, and a screw
275
threaded ?xing sleeve applied to said extension
and engaging and clamping the wires.
6. A device for use in connecting the ends of
conducting wires, comprising an inner cylindri
cal externally screw-threaded member, an inter
nally screw-threaded locking ring thereon, an
abutment formed on the member for engagement
by said ring, a tapered mandrel formed on the
opposite end of said member, wire-receiving bores
extending through the abutment, and a groove
aligning with each of said bores and formed in
said member and extending through part of the
length of the mandrel to accommodate the wire
with the screw-threads of the locking ring hold
ing the same in position and with the wire-ends
bent and twisted together beyond the mandrel
and without sharp bends.
7. A device .of the character described for use
in connecting the ends 01.’ conducting wires, com
prising an inner cylindrical member having ex
‘ternal screw-threads, an internally screw-thread
ed ?xing ring on said member, a plurality of
external grooves extending lengthwise of said
member to receive a plurality of wires adapted
to be engaged and gripped by the internal screw
threads of said ring, and a tapered mandrel hav
ing external grooves therein and formed on the
end of said member with its grooves forming ex
tensions of the grooves in said member to direct
the wires towards each other without sharp
bends.
8. A device of the character described for use
in connecting the ends of conducting wires, com
. thread, a mandrel formed on the end of said
member, wire-receiving grooves extending part
of the length of said mandrel and forming ex 25
tensions of the longitudinal grooves in said mem
ber, and bores formed in the abutmentpiece in
alignment with said longitudinal grooves.
10. A device for use in connecting the ends of
conducting wires, comprising a part with wire 30
receiving bores therein, an externally screw
threaded and grooved member 'foriiflgd on one’
end of the said part with its grooves in alignment
with the bores, a conical mandrel on the end
of the member to receive the ends of wires ex 35
tending through the bores and the grooves and
to facilitate the twisting of the wire ends around
each other without sharp bends, a ?xing sleeve
applied to the said member to .clamp the wires
in the grooves, and an internally screw-threaded
covering cap applied to said sleeve.
11. A device for use in connecting the ends of
conducting wires, .comprising a cylindrical ex
ternally screw-threaded part with wire-receiv
ing bores therein, an externally screw-threaded 45
and longitudinally grooved member on, one end
of said part with its grooves in alignment with
said bores, a tapering mandrel on the end of the
said member to receive the ends of the wires
extending through the bores and grooves and to
facilitate the twisting of the wire ends around
each other, a locking sleeve applied to the mem
ber to clamp the wires in the grooves, and an in
ternally screw-threaded insulating cap applied
to the screw-thread on the said cylindrical part. 55
"
JACOB HENDRIK van VIERSEN.
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