Improvements in Connections, Especially Suitable for Joining Electric Conductors.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Improvements in Connections, Especially Suitable for Joining
Electric Conductors.
I, GEORGE STUART, of the Elswick Works, Newcastle on Tyne, Engineer, do hereby
declare the nature of this invention to be as follows:-
The connection consists of a screw and nut, the wires or other parts to be connected
being clipped between the nut and a flange upon the screw.
The nut is made hollow,"
and contains a spiral spring, one end of which presses against the nut whilst the
other bears against a collar or cap fixed to the top of the screw. One end of the
wire forming the spring is fixed to the nut and the other end to the cap and before
fixing the latter by rivetting or otherwise it is turned round so as to wind up the
spring which therefore tends to screw on the nut by reason both of its compression
and of its being wound up as above described.

page_text: Electric Conductors.
I, GEORGE STUART, of the Elswick Works, Newcastle on Tyne, Engineer, do
hereby declare the nature of this invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement :-
The connection consists of a screw and nut the wires or other, parts to be connected
being clipped between the nut and.a flange upon the screw. The nut is made hollow
and contains a spiral spring, one end of which presses against the nut whilst the
other bears against a collar or cap fixed to the top of the screw. One end of the
wire forming the spring is fixed to the nut and the other end to the cap and before
fixing the latter by rivetting or otherwise it is turned round so as to wind up the
spring which therefore tends to screw on the nut by reason both of its compression
and of its being wound up as above described.
In order that my said invention may be more fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of an apparatus constructed according to iny invention."
The apparatus being shown as it appears when not in use.
Figure 2 is a vertical section of the same, and
Figure 3 is a vertical section of the apparatus when forming a connection between
two wires.
Figures 4 to 10 are views of the various parts.
a is the nut the screw upon which it works-the parts to be connected are
held between the nut a and the flange b' upon the screw b-c is a cap which is
rivetted or otherwise firmly fixed to the head of the screw b after the apparatus has
been put together-d is a spiral spring, the end d¹ of which is fixed to the cap c and
the end d to the nut a.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim in connections especially suitable for joining electric conductors is :-
1. The combination of a nut and screw with a spring which tends to screw
on the nut.
2. An apparatus such as is referred to in claim 1, in which the parts are so put
together that the spring which is spiral tends to screw on the nut by reason of its
being wound up as well as by its compression substantially as described.
3. My improved connections substantially as described.
Dated this 28th day of December 188.