Improvements in Ceiling Roses and similar Fittings for Electric Light Service.
Year: 1897

page_text: Date of Application, 20th Nov., 1897
Complete Specification Left, 27th Jan., 1898-Accepted, 5th Mar., 1898
PROVISIONAL SPECIFICATION.
Improvements in Ceiling Roses and similar Fittings for Electric
Light Service.
I, ALBERT EDGAR TANNER, of 563, Stretford Road, Old Trafford, Manchester,
in the County of Lancaster, Electrical Engineer, do hereby declare the nature of
this invention, to be as follows:-
This invention relates to ceiling roses and similar fittings for use with electric
lamps and its object is to so construct them as to diminish the risk of short-cir-
cuiting, to render them stronger and more durable, and more suitable for use in
connection with electric currents of a high potential.
A ceiling rose or other fitting, constructed to embody these improvements, is
formed on its face with a cruciform projection of some suitable insulating material
which may be either integral with or secured to the base. Each one of two co-
linear arms of the cross is provided or formed with a slot or passage through which
is passed a metallic contact plate provided with suitable terminals preferably
arranged one on each side of the arin through which the plate, passes. The two
contact plates are approximately parallel and are separated from each other by
the other two arms of the cross. The terminals are preferably formed by screws
which engage with the metallic plates and pass into holes in the base of the rose,
these holes being of such a diameter as to contain the screws without engaging
therewith. The contact plates cannot fall out of the rose because they are passed
through the arms of the cross and the terminal screws passing into the base pre-
vent endwise movement.
The lead and the return wires are brought into the fitting in any suitable
manner and at such points that they are separated by the arms of the cross, and
they are connected respectively to the contact plates. The free terminal of each
contact plate has one of the lamp wires connected with it.
By this arrangement the base of the fitting is divided into four compartments
each of which contains only one wire or contact and is separated by a wall of
insulating material from the next compartment. All risk of short circuiting is
thus avoided.
If desired the lamp wires may pass through small transverse holes in the arms
and be secured by knots or other devices.
The improved fitting may be provided with a cap or cover in any well known
or suitable manner, and a fuse may be arranged in the circuit as is well under-
stood.
Ti thin 10th day of November. A.D. 1897.
W. E. HEYS & SON,
Agents for the Applicant.

page_text: Improvements in Ceiling Roses and similar Fittings for Electric
Light Service.
I, ALBERT EDGAR TANNER, of 563, Stretford Road, Old Trafford, Manchester,
in the County of Lancaster, 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:-
This invention relates to ceiling roses and similar fittings for use with electric
lamps, and its object is so to construct them as to lessen the risk of short circuiting,
to render them stronger and more durable and suitable for use in connection with
electric currents of high tension.
Fig. 1 of the accompanying drawings is an elevation, Fig. 2 is a section and
Fig. 3 is a plan with cap removed, of a ceiling rose according to this invention.
Fig. 4 is a section and Fig. 5 a plan with cover removed shewing a modification.
Referring to Figs. 1, 2 & 3, the base B of non-conducting material has formed
on or attached to its face four projecting ribs A1 A3 A3 A4 forming a cross.
Through each of the two ribs A¹ A³ there is a slot through which is passed a metal
contact plate D¹ D³ having on the one side of the rib a terminal d to receive one
of the wires leading to the rose, and on the other side thereof a terminal d¹ to
receive one of the wires leading from the rose. The ribs A2 A4 constitute an
insulating partition between the two contact plates D1 and D³. These plates
being engaged in the slots, of the ribs, cannot fall out, and they are held in
position each by its terminal screw d¹ which screws through a threaded hole of
the metal into a plain hole in the base B. The whole is covered by a cap C screwed
on the base, and ornamented as may be desired.
Referring now to Figs. 4 and 5, there is a single projecting rib A separating
the contact plates D, Di which are held in dovetail grooves in the base B being
prevented from moving lengthwise by their screws entering plain holes in the
base.
Obviously other electric fittings having conducting plates on an insulating base
may have these plates separated by an insulating partition projecting from the
base and secured in slots or grooves as above described.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
A ceiling rose or like electrical fitting having an insulating partition projecting
from its base and conducting plates secured in slots or grooves without being
screwed to the base; substantially as described with reference to the drawings.
Lintad Chen 97KER dow t LonnO MAY
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ABEL & IMRAY,.
Agents for the Applicant.
ABEL & IMRAY,.
Agents for the Applicant.