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Патент USA US2118103

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May 24, 1938.
Filed June 8, 1935
Patented May 24, 1938
Wolfgang Oe'dlng, Berlin-Charlottenburg, Ger
many, assignor to.8lemens I; Halske, Aktlenge
sellschaft, Siemensatadt, near Berlin, Ger
many, a corporation of
Application June a, 1m, Serial No. 25,580
In Germany June 20, 1934
2 Claims.
(C1. 173-251)
An object of this invention is to provide an im- ' the screw’. engaging a threaded hole in the end
proved formof connecter to electrically connect
two wires or cables together.
A further object is to provide a connector be
5 tween two wires or cables one of which is enclosed
within an outer metallic shielding cover, the con
necter being also designed to support the latter
wire entirely by means of its metallic cover.
Other and further objects of the invention will
10 become apparent to those skilled in the art as the
description thereof proceeds._ For a better under
standing of the invention, however, reference is
made to the accompanying drawing in which;
Fig. l is a partial cross section of a connecter
15 made according to my invention, and
Fig. 2 is a side view of the connecter shown in
Fig. 1.
Terminals or connecters of the kind )heretofore
of cap I.
This conical clamp device after mounting con
stitutes a self-enclosed unit with which a suspen
sion device and contact terminals for the drain 5
wires may be united. In the exempli?ed embodi
ment shown, the screw cap 0 has at the top the
form of a bolt support or screw upon which a
terminal cap may be screwed as indicated at I.
This cap I is suspended from a wire clip I. (Fig. 10
2) which is held by an egg-shaped insulator
chain It.
The screw cap I also serves to estab
lish fixed connection between lead-oi! wire ll
and the clamp device or terminal.
The action of the arrangement is as follows:
The clamp cone member 4 inserted underneath
the braided cover I presses the latter. after the
that the tension produced by the weight of the
clamp nut I has been shifted over and after it
has been screwed fast with the cap t, with great
force against the conical inside surface of the .
line or feeder is jointly taken up by the sheath
and the inside conductor. As a result of the per
clamp nut. In this manner the extraction of
the braided cover i which alone supports the
mostly used are without exception of such a kind
manently acting tractive and occasionally also
?exural stresses, the slender inside conductor is
a ‘subject to a risk of breaking. In addition the
mounting .of such terminals is attended with
serious dimculties, especially in shielded radio
frequency or antenna feed leads, which, as is
well known, because of the capacitive action of
a the screening metal sheath are of large diameter
and. of especially suitable hollow forms of con
entire weight of the cable and occasionally also
ilexural strains thereof is prevented. The inside
conductor I is brought out of the screw 'cap I
through the inside bore so that there is suillcient
play or clearance. and connected with the ter
minal screw 8 so that thus perfect relieving of
stress of the slender inside conductor without
compressive or bending eil'ects is insured.
Having described my invention, what I claim
struction for the insulating and the supporting
as novel and desire to secure by Letters Patent is!
or strain material.
1. Means for supporting a vertically depending
cable having an outer metallic braiding and a
central insulated conductor without strain on the a
central conductor, comprising in combination a
hollow nut tapered internally and in contact with
the outer surface of said braiding, a wedge be
tween the insulation and the interior surface of
said braiding, a hollow member having an inter- ‘0'
nally threaded portion engaging said nut and a
reduced shoulder portion adapted to engage the
end of said wedge to thereby expand the end of
In the terminal here disclosed these disadvan
35 tages are obviated. According to this invention
the terminal of a line or feeder has a conical
so rubber
device- for receiving the braiding cover
thus is called upon to support the line
whereas the inside conductor and the
envelope thereof are not called upon to
withstand any tension.
- As shown in the sectional view Fig. 1, i denotes
the braided metallic envelope of a line or feeder
comprising the inner conductor I and its insu
45 lation covering 2. Between the insulation cover
ing and the braiding on top is introduced a pref
erably separate clamping cone member 4 of in
sulating material. Fitted thereover is a clamp
nut 5 also of insulation material and having a
50 correspondingly shaped inside bore, said nut piece
5 being screwed in a screw cap t. The inside con
said braiding and maintain it ?rmly in contact
with the tapered surface of said nut, screw means ‘5
for securing the upper end of the central con
ductor to the upper surface of said hollow mem
ber in the absence of tension in said conductor, a
vertically depending supporting member engag
ing the upper portion of said hollow member and ‘0
serving as a supporting means for said cable and
ductor 3 passes through co-axial bores in the
a lead wire clamping means intermediate the
clamp cone member and in the screw cap as well
last two members for providing a conductive con
as the longitudinal slot indicated at ‘I and loosely
55 in the extension of the screw cap is locked under
nection between said conductor and an external
ll '
2. A connecter device comprising the combina
tion of a cable having an outer metallic sheath
extending along substantially its entire length
and serving as a shielding means, an inner con
ductor insulated therefrom, a clamp nut tapered
to engage said sheath and having a central aper
ture passing said inner conductor, a tapered
wedging member inserted between the insulation
and the outer metallic sheath of said cable, a
10 member provided with screw means wedging said
tapered member longitudinally of said cable, said
last named member being hollow and passing said
inner conductor, securing means arranged to
secure said conductor to the end of said last
named member, a supporting member engaging
the upper portion of the last named member and
serving as a supporting means for the cable and
a lead wire clamping means positioned between
the supporting member and the last named mem
ber for providing a conductive connection be
tween the conductor and an external circuit.
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