Year: 1896

page_text: Date of Application, 22nd Aug., 1898
Complete Specification Left, 18th May, 1897-Accepted, 19th June, 1897

page_text: Improvements in and relating to Electrical Ceiling Roses, Switches,
and the like.
I, WILLIAM MOGEoou, of 108 Argyle Street, in the City and County of Glasgow,
Ironmongor, do hereby declare the nature of my invention and in what manner
the same is to be performed to be particularly described, and ascertained in and by
the following statement, that is to say :-
This invention has reforence to improved fittings to be applied to electrical ceiling
roses, switches, and the like, to give an improved insulating effect, and particularly
suitable for high tension systems of electric lighting.
Reference is made to the drawing accompanying my Provisional Specification
in which
Figuro 1 is a sectional elevation of a ceiling rose as fitted in accordance with my
improvements.
Figure 2 is an inverted plan view of the terminal board with the cover fittings
removed, and
Figure 3 is a detached plan view of my insulating auxiliary cap or cover.
Figures 4 and 5 are views corresponding to Figures 1 and 2 of a modified
construction of ceiling roso in which a romoveable insulating base board is applied:
thereto, and
Figure 6 is a detached elevation of the insulating cap.
Figure 7 is a sectional elevation of an electrical switch as fitted with my removeable
insulating base board,
Figure 8 is an inverted plan view of the base board and
Figure 9 a plan view of the adjacent terminal board.
Referring to Figures 1 to 3 of these drawings. The terminal clamping screws a
the wires a are fitted through projecting blocks A' in the terminal
for soy my improvements a portable dome shaped cap or, cover b of china,
board A.
porcelain, or other insulating material is formed or fitted with projecting ribs b¹ to fit
over the terminal board A and is clamped in position by an outer metal cover B when
that is used, and the whole tightened up by a screw nut B working over a screw
thread on a screwed plug B³ screwed into hollow central stud A' in the terminal
board A, but the cover B may be dispensed with and the cap b only used being
ornamented and fitted for this purpose.
In the arrangement shown in Figures 4 to 6 the cap b needs no projecting ribs,
as these are. formed on the terminal board A, and the wire screws a fitted over
plates a between theso ribs. To provide better insulation for the terminal ends of the
wires a' a portable base board c is provided, having projections o' which engage in
recesses at in the terminal board A, and the outer cap B is sorewed over the screw
threaded part o of board o or vice versa and the screwed on nut B' works into the
screwed central stud A'.
In the arrangement of electrical switch shown in Figures 7 to 9 the portable
insulating base board-o is formed as in Figures 4 to 6 and the projections of enter
recesses on the under surface of terminal board A to prevent same from turning.
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 electrical celling roses, switches, and the like, the fitting and use of a
portable base board for insulating where wires pass to terminal board, substantially as
herein described in reference to and shown in the accompanying drawings.

page_text: Second. In electrical ceiling roses and the like, the fitting and use of a portable
cover and projecting ribs in combination with a terminal board for insulating purposes
substantially as herein described in reference to and shown in Figures 1 to 6 of the
accompanying drawings.
Dated this 17th day of May 1807
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.