Improvement in Ceiling Roses for Electrical Purposes.
Year: 1897

page_text: Date of Application, 4th May, 1897
Complete Specification Left, 9th Sept., 1897-Accepted, 30th Oct., 1897
Improvement in Ceiling Roses for Electrical Purposes.
WILLIAM PAUL THEERMANN 12 Corporation Street Manchester in the County of
Lancashire, Electrical Engineer, do hereby declare the nature of this invention
to be as follows:
-
This Invention relates to Ceiling roses for Electrical purposes and the object of
my improvement is to insure a higher insulation between the several connections
especially where high voltage of current is used. To effect this improvement I
construct a Ceiling rose in the following manner;
I use a Ceiling rose with porcelain base and cover, similar in shape to those now in
use. On the top surface of the base of said Ceiling rose are mounted two Terminal
plates, each with two connecting screws or Terminals for the supply wires or cables
and the Flexible cord. The two said Terminal plates are divided and insulated
from each other by a suitable bridge or partition moulded or fixed on the surface
of the said base.
The said bridge or partition is provided with two suitable vertical openings each
one of which lead into V-shaped openings one on each side of the said bridge or
partition. The two ends of the Flexible cord are threaded through the said
vertical and V-shaped openings and then connected to the Terminals or screws of
the Terminal plates.
Suitable holes are formed in the base of the said Ceiling rose for the supply
Wires or Cables. The said V-shaped openings on the side of the said bridge
or partition are for the purpose of firmly gripping the flexible cord, thus taking
the strain of the connecting Terminals or screws, the more weight there is attached
to the Flexible cord the more tightly will the same wedge itself in the V-shaped
opening.
Improvement in Ceiling Roses for Electrical Purposes.
I WILLIAM PAWL THEERMANN of 12 Corporation Street Manchester in the County of
Lancashire, 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 for electrical purposes and the object of

page_text: my improvement is to insure a higher insulation between the several connections
especially where high voltage of current is used.
In carrying out these improvements I employ a ceiling rose with a porcelain base
and cover similar in shape to those now in common use. On the top surface of the base
of said ceiling rose are mounted two terminal plates each with two connecting screws
or terminals for securing respectively the supply wires or cables and the flexible
cord.
The two said terminal plates are separated or insulated from each other by a
suitable horizontal earthenware or porcelain web or partition moulded or fixed
on the surface of the said base.
The said bridge or partition is provided: with two suitable vertical openings each
leading into one of a pair of V-shaped openings disposed one on either side of the
said bridge or partition. The two ends of the flexible cord are threaded respectively
through the said vertical and V-shaped openings and then connected to the
terminals c or screws of the terminal plates.
.
Suitable holes are formed in the base of the said ceiling rose for the supply
wires or cables to pass through.
The said V-shaped openings on the opposite side of the said bridge or partition
are for the purpose of firmly gripping the flexible cord, thus taking the strain off
the connecting terminals or screws and the more weight there is suspended from
the flexible cord the tighter will the same wedge itself in the V-shaped or angular
opening.
Referring to the accompanying drawings Figure 1 is a vertical section on
line of Figure 2.
Figure 2 is a plan of ceiling rose with cover removed.
Figure 3 is a vertical section of Figure 1, upon the dotted line al, looking from
left to right and with the terminal fittings removed.
Figure 4 is an elevation of the base of the rose, with the transverse partition
or bridge.
a is the base of the ceiling rose and the cover. G are the terminal plates with
terminals or screws e, h, f and g.
To the base is moulded or fixed the bridge or partition i, which is made of
porcelain, earthenware, wood, or other insulator, and has suitable vertical open-
ings k, with V-shaped or angular passes leading from their ends and being
directed thence at a right angle and coming out one on either side of the partition
or bridge.
The supply wires are connected to the terminals e, h, and the twin flexible cord
passes through cover and through the holes k, 1, and V-shaped openings m, n,
and its ends are connected to the terminals f, g. The terminal plates c, d, are
thus being insulated from each other by the partition i, and as the said partition
extends close to the inside edges of cover no loose flexible cord can come in con-
tact with the terminal plates, whilst the flexible cords are further insulated by
passing through the two angular openings k, I and m, n.
The opening m, n, being V-shaped all strain is taken off the terminals f, g,
and the more weight there is put on the flexible cord the tighter will it become
wedged into the V-shaped grooves in the openings m, n.
"
Having now particularly described and "ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:-
1
. A
First. In electrical ceiling roses, separating and insulating the terminal con-
nection plates from one another by a web or partition, moulded or fixed across
the surface of the base or equivalent part, substantially as described and set
forth.
->
…- ;
Secondly. In ceiling roses for electrical purposes, providing the base of the same
with a cross partition or web, separating and insulating the terminal connection

page_text: plates, and having separated passages for the flexible cords, substantially as
described and set forth.
Thirdly. In electrical ceiling roses, forming a side or sides the flexible cord
passages of a V or angular trough section, substantially as and for the purpose
described and set forth.
Fourthly. The improvements in electrical ceiling roses, and in the arrangement
and combination of the parts, substantially as and for the purpose described and
set forth.
naince
this oth day of September
WILLIAM PAUL THEERMANN,
By Henry Skerrett,
24 Temple Row, Birmingham, Agent for Applicant.