Improvements relating to the Fixing in Insulating Bases of Blocks for Connecting Electrical Conductors.
Year: 1890

page_text: Date of Application, 17th Nov., 1890
Complete Specification Left, 17th Sept., 1891-Accepted, 14th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements relating to the Fixing in Insulating Bases of Blocks
for Connecting Electrical Conductors.
I, HENRY JAMES PIERCE of South Acton Works Beaumont Road South
Acton in the County of Middlesex, Electrical Engineer do hereby declare the
nature of this invention to be as follows:-
This invention relates to the fixing of blocks for connecting electrical conductors
in insulating bases such as wall plates ceiling roses and the like and the invention
is applicable to the blocks used in electrical switches, cut outs, ceiling roses, wall
sockets and plug or in general to so called electrical sundries in which wires etc. or
parts for certain functions are to be interpolated in electrical leads.
The invention consists in forming the base, which may be of porcelain, glass,
slate, chiun, or any other usual material, with recesses slots or undercut holes so
made that the block may be slid therein and held thereby by the aid of one screw
only screwed into the block transversely to the line of sliding of the latter in its
recess in the block, so that either the point of the screw passing the block or the
head of the screw lying over the block may lodge in a hole or recess in the block
and so prevent its withdrawal from the socket or recess in the base, the latter being
also so made that the block may be removed after sufficient loosening of the screw
without it being necessary to completely remove the screw from the block.
The single fixing screw will also serve as a binding or terminal screw for
connection of the block to the wire of the interpolated part, and it being preferable
that the wire shall be bound down by the head of the screw direct onto the surface
of the block, the hereindescribed method of fixing allows this to be done since it is
unnecessary for the screw to bind any part of the base between its head and the
block.
I do not confine myself to any particular form of block and corresponding
recess, but a cylindrical form of block is preferred since it is cheaper to make.
The improved method of forming and fixing the blocks herein described allows of
high insulation" without perforation of the under surface of the insulating base,
and is of extreme simplicity and low cost, the necessary parts for each connection
being reduced to two, the block and the one combined fixing and terminal screw.
Dated this 17th day of November 1890.
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements relating to the Fixing in Insulating Bases of Blocks
for Connecting Electrical Conductors.
I HENRY JAMES PIERCE of South Acton Works, Beaumont Road, South
Acton in the County of Middlesex, 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 the fixing of blocks for connecting electrical conductors
in insulating bases such as wall plates ceiling roses and the like and the invention
is applicable to the blocks used in electrical switches, cut outs, ceiling roses wall
sockets and plugs or in general to so called electrical sundries in which wires etc. or
parts for certain functions are to be interpolated in electrical leads.

page_text: The invention consists in forming the base which may be of porcelain, glass,
slate china or any other usual material with recesses slots or undercut holes so
made that the block or a part thereof or a projection thereon may be slid therein
and held thereby by the aid of one screw only screwed into the block transversely
to the line of sliding of the latter in its recess in the base so that either the point
of the screw passing the block or the head of the screw lying over the block may
lodge in a hole or recess in the base and so prevent its withdrawal from the socket
or recess in the base, the latter being also so made that the block may be removed
after sufficient loosening of the screw without it being necessary to completely
remove the screw from the block.
The single fixing screw will also serve as a binding or terminal screw for
connection of the block to the wire of the interpolated part and it being preferable
that the wire shall be bound down by the head of the screw direct onto the surface
of the block, the hereindescribed method of fixing allows this to be done since it is
unnecessary for the screw to bind any part of the base between its head and the
block.
The improved method of forming and fixing the blocks herein-described allows
of "high insulation" without perforation of the undersurface of the insulating
base and it is of extreme simplicity and low cost, the necessary parts for each
connection being reduced to two, the block and the one combined fixing and
terminal screw.
The accompanying drawings show various means of carrying out this invention
as applied to different electrical sundries.
Fig. 1 is a plan view, Fig. 2 a side elevation and Fig. 3 an end elevation of a
double fuse cut-out.
Fig. 4 is a plan. Figs. 5 and 6 side and end elevations respectively of another
form of double fuse cut-out.
Fig. 7 is a plan view of a third form of double fuse cut-out.
Fig. 8 is a plan. Fig. 9 a side elevation and Fig. 10 an end elevation of a single
fuse cut-out.
Fig. 11 is a plan.
triple fuse cut-out.
Fig. 14 is a plan.
Fig. 12 a side elevation and Fig. 13 an end elevation of a
Fig. 15 a longitudinal section and Fig. 16 a cross section of
a form of cut-out in which the fuse is inserted over and held by hooks F.
Fig. 17 is a plan. Fig. 18 a side elevation and Fig. 19 an end elevation of
another form of single fuse cut-out.
Fig. 20 is a plan. Fig. 21 a side elevation. Fig. 22 an end elevation of another
construction of double fuse cut-out.
Fig. 23 is a plan of a cut out on a circular base.
Figs. 24 and 25 are cross sections of this cut-out with covers.
Fig. 26 is a plan. Fig. 27 a section of a double cut-out on a circular base.
Fig. 28 is a plan. Fig. 29 a section of another construction of double cut-out
on a circular base.
Fig. 30 is an enlarged view of part of this cut-out.
Fig. 31 is a plan of a ceiling rose for an incandescent lamp, with cover removed.
Fig. 32 is a cross section with cover and Fig. 33 an end view without cover of
this rosc.
Fig. 34 is a plan of another ceiling rose.
Fig. 35 is a plan. Fig. 36 a cross section of another construction of ceiling rose ;
these last two may contain cut-out fuses.
Fig. 37 is a plan of the fixed part of a wall socket.
Figs. 38 and 39 are cross sections of this socket with its removable plug.
screw.
A is the block. D the insulating base. B the combined fixing and terminal
C the hole in the block to receive the electrical leads where such are to be
soldered to the block. E is a tongue, piu or projection in the block to fit into a
recess in the porcelain when the latter is not so made as to receive the block itself.

page_text: Fin Figs. 14 and 15 shows a spring hook to receive a fuse this being no part of
the present invention. In the wall socket and plug in Figs. 38 and 39, EI is the
cover and A' the contacts in the plug.
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 1
claim is:
The improvements relating to the fixing of blocks for connecting electrical
conductors in insulating bases, consisting in making said blocks to fit or slide into
holes, recesses or sockets in said bases either wholly or partly so that the passing of
a screw into or through the block may hold same in position in or on the base by
simply projecting therein as herein set forth.
Dated this 17th day of September 1891.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.