Improvements in Linked Suspensions for Electroliers, Electric Light Pendants, and the like.
Year: 1895

page_text: Date of Application, 13th Sept., 1895
Complete Specification Left, 29th May, 1896-Accepted, 4th July, 1896
Improvements in Linked Suspensions for Electroliers, Electric Light
Pendants, and the like.
I, HUGO HIRST, of Nos. 69-71 Queen Victoria Street in the City and County
of London, Electrical Engineer do hereby declare the nature of this invention to
be as follows:-
My invention relates to certain improvements in linked suspensions for
electroliers, electric pendants, or the like, and has for its object the insertion of a
flexible lead or leads, in such a manner that any oscillatory movement of the
suspended object, which would cause the links forming the suspension to chafe,
would not affect the inserted leads, either as regards insulation or disintegration
by friction.
In carrying my invention into effect, I insert into the contact surfaces of each
link forming the suspension, hollow plugs or bushes of insulating material through
which the flexible lead or leads may freely pass throughout the length of said
linked suspension.
These bushes, or equivalents may be made of any insulating substance or
material, and are preferably shouldered upon the side of each link oppositely to
the strain imposed upon the suspension as a whole, and may be chamfered or coned
inversely in the bore in order to minimise friction.
I do not confine myself to any particular form or pattern of linked suspension to
which I may adapt my said invention, the essential feature of which is the
provision of a continuous, insulated, flexible passage for a flexible conductor or
lead through a linked suspension.
Dated this 12th day of September 1895.
c
FREDK. WALKER,
73 St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicant.
Improvements in Linked Suspensions for Electroliers, Electric Light
Pendants, and the like.
I, HUGO HIRST of Nos. 69-71 Queen Victoria Street in the City and County
of London, Electrical 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 :-
My invention relates to certain improvements in linked suspensions for
electroliers, electric pendants or the like and has for its object the insertion of a
flexible lead or leads in such a manner that any oscillatory movement of the
suspended object, which might cause the links forming the suspension to chafe
should not affect the inserted leads either as regards insulation or disintegration
by friction.
In order that my invention may be the better understood I have appended the
accompanying sheet of drawings in which Figure 1 represents part of such

page_text: suspensory chain, in which the flexible conductor is purposely shown slack in order
to substantiate the object of the said invention, and Figure 2 is an enlargel
sectional view thereof, Figure 3 being a plan view drawn to the same scale.
In carrying my invention into effect I insert into the contact surfaces of each
link forming the suspension, shown by A in the drawings (which are lettered so as
to indicate each part in all the views by the same reference letter) certain plugs or
bushes B of insulating material through which the flexible lead or leads C may
pass throughout the entire length of the linked suspension.
The bushes or plugs B may be made of any insulating substance or material,
and are preferably shouldered at a which is upon that part of each link opposite to
the strain imposed upon the suspension as a whole. I prefer to chamfer each
mouth of the bore as shown by Figure 2 so as to minimise friction in the
ordinary oscillation of the chain.
As shown by the appended drawings the bushes or plugs B are kept in position
by the upper shoulder a and a burr at Figure 2, which may be effected by
heating and slightly moulding the softened insulating substance into a chamfer in
the metal link, or said bushes or plugs may be secured by screwing or side pins.
If the linked suspension be used for the support of an electrolier or the like the
flexible cable or lead may be carried loosely throughout the links, each of which
affords perfect insulation and freedom of motion during oscillation, thus preventing
unnecessary wear and tear, and at the same time rendering the general appearance
of the installation more tightly than is the case when the leads are wound or
otherwise carried round the suspension.
I do not confine myself to any particular form or pattern of linked suspension,
to which I may adapt my said invention; the essential feature of which is the
provision of a continuous and insulated flexible passage for a correspondingly
flexible conductor, lead, or leads, through a linked suspension.
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 is,
First. In a linked suspension for electroliers pendants or the like the employ-
ment and construction of a shouldered bush or plug, with a bore chamfered at
each end, and which is inserted in each link of said suspension by burring against
the shoulder or by screwing substantially as and for the purposes herein set forth.
Second. In a linked suspension for electroliers pendants or the like the com
bination of a shouldered plug or bush of insulating material with a metal link and
a flexible conductor lead, or the like substantially as and for the purposes herein
set forth and with reference to the accompanying sheet of drawings.
Dated this 26th day of Mar 1896
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicant.