Improvements in Celling Roses and similar Appliances for Electric Connections.
Year: 1893

page_text: Date of Application, 1st June, 1893
Complete Specification Left, 1st Mar., 1894-Accepted, 1st June, 1894
Improvements in Celling Roses and similar Appliances for Electric
Connections.
I GEORGE HAWKINS CUTTING of 95 Uttoxeter New Road Derby, in the
County of Derby, Electrical Engineering Student do hereby declare the nature of
this invention to be as follows:-
:-
The flexible cord is fixed to a disc, preferably round, detachable from the ceiling
rose base.
This disc made of porcelain or other suitable insulating material carries the
flexible cord together with the lamp socket or other pendant, also the safety fuse
or fuses at the back.
The disc is on two opposite edges provided with metallic projections or lugs
which through the safety fuse or fuses are electrically connected to the lamp
terminals and are furthermore so arranged in connection with metallic parts on the
base that when the disc is in position electrical connection is made between the
lugs and the ends of the two wires or leads brought into the base. These lugs
may for instance be turned in under spring tongues on the base and the latter be
provided with a circular recess into which the disc fits easily. Over all is placed
the usual cover screwed or otherwise fixed on the base.
The detachable disc may also be used for making electrical connection to
electroliers, namely by screwing the tube of the electrolier into the insulating
material of the disc or by attaching the tube thereto in any other suitable manner.
This disc may also be used for making any other detachable electrical connection
in the manner described.
This construction offers the advantages of easy wiring, as most of this work is
done before the disc with pendant part is fixed in position; and also that of easy
replacement of a safety fuse or other repairs as the disc can so readily be removed
and replaced.
Dated this let dex of June 1802
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
Improvements in Ceiling Roses and similar Appliances for Electric
Connections.
I, GEORGE HAWKINS CUTTING of 95 Uttoxeter New Road, Derby, in the
County of Derby, 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 :-
According to this invention I provide ceiling roses for electric connections and
also electric cut-out appliances and the like with a detachable disc made of porcelain
or other suitable insulating material. This disc carries on the back the safety fuse
or fuses and is on two opposite edges provided with metallic projections or lugs
which through the safety fuse or fuses are electrically connected to the lamp
terminals or other terminals and are furthermore so arranged in connection with
metallic parts on the base that when the disc is in position electrical connection is
TD 077

page_text: made between the lugs and the ends of the two wires or leads (or the two ends of
the wire in a cut-out) brought into the base.
In the drawings I have shewn one suitable form of ceiling rose and one such of
a cut-out, but I do not limit myself to the precise forms shewn.
Figure 1 is a plan view of a ceiling rose, the cover being removed, and Figure 2
a separate back or under view of the detachable disc therefor.
The base A made of porcelain or other suitable insulating material is formed
with annular projections A' A' screwed on the circumferential part for the usual
cover to be screwed on over it or it may be fixed in any other well known manner.
The detachable disc B also of porcelain or other suitable insulating material lies
in the recess formed by the annular projections A' A' and is by preference for
securing high insulation and easy manipulation formed with a raised middle
portion B' having notches B' in two opposite sides. CC are thin metallic pieces
or lugs fixed to the disc by screws C* C** and by projections held in the notches B²
against shifting round. The lugs are in Figure 1 shewn turned in under metallic
spring tongues D which are fixed on the base A. The safety fuses E are held
under the head of the screw C* and the binding screw F and under the head of the
screw C** and the binding screw G. The flexible cord H comprises the two leads
or wires for the lamp which wires are connected to the screws F and G.
The detachable disc B may also be used for making electrical connection to
electroliers viz. by screwing the tube of the electrolier into the insulating material
of the disc or by attaching the tube thereto in any other suitable manner.
Figure 3 is a plan view of a cut-out fitted with the disc B, the cover being
removed, and Figure 4 is a back view of the disc B. The safety fuse E is inserted
between the binding screws C* and C**.
This construction offers the advantage of easy wiring especially as regards
ceiling roses as most of the work is done before the disc B with pendant-part is
fixed in position, and also that of easy replacement of a safety fuse or for other
repairs as the disc can so readily be removed and replaced. The pendant or
electrolier may thus easily be taken from the circuit without the usual necessity of
disturbing the leads. The movable disc also affords high insulation and complete
protection of the two opposite leads so that by this means a short circuit is
absolutely impossible.
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 :-
1. The application to the base plate of an electrical ceiling rose, cut-out and
the like of a disc such as B of insulating material provided with metallic lugs
or parts for electrical connection with the terminals and provided with safety
fuse or fuses, the said disc being instantaneously detachable and attachable for
the purpose of high insulation, easy wiring, replacing of a fuse and other repairs.
2. The construction of electrical ceiling rose with detachable disc as shewn and
described.
3. The construction of electrical cut-out as shewn and described.
Dated this 1st day of March 1894
March 1894
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.