An Improved Electrical Drop Indicator.
Year: 1893

page_text: Date of Application, 17th Nov., 1893
Complete Specification Left, 16th Aug., 1894-Accepted, 29th Sept., 1894
PROVISIONAL SPECIFICATION.
An Improved Electrical Drop Indicator.
EBENEZER BEAL 167 Highfield Road Seedley Manchester Electrician do
hereby declare the nature of this invention to be as follows:-
A brass base C has a short iron core B fixed to it. On this core is fixed a
bobbin of wire A (shewn without wire in drawing). This short core reaches only
a part of the way through the bobbin leaving room for the smaller iron core D.
This core fits loosely in the hole of the bobbin and is free to move up & down in
it. As when in position this end of the bobbin is hanging downwards this core
has always a tendency to fall out. It is prevented from doing so by coming to
rest on the drop piece E. This drop piece is free to work round on the screw.
The position shown in front view of drawing is when E has been pushed up.
The
cam in turning has raised D till past its highest point when D falls and holds it
there. Now on a current of electricity of suitable strength being sent through
the wire of bobbin A the core D is drawn into the bobbin & releases E which falls
to position shewn by dotted lines.
Dated this 15th day of November 1893.
VOM DELE DIBUITICATION.
An Improved Electrical Drop Indicator.
EBENEZER BEAL, 4, Park View, Monton Green, Manchester, late of 167 High-
field Road, Seedley, Manchester, Electrician, 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 :-
My invention relates to an electrical indicator, as I shall describe, referring to
the drawings sent with my Provisional Specification.. C is a brass base, to which is
fixed a short, soft iron core, B. On this core is fixed a bobbin of wire A (shewn
unwound in drawing). This core only reaches a part of the way through the
bobbin, leaving room for the smaller core D. which is also of soft iron, and may be
solid or in the form of a tube. It fits loosely in the hole of the bobbin and is free
to move up and down in it. As when in position this end of the bobbin is hanging
downwards, this loose core has a tendency to fall out.
It is however prevented
from doing so by coming to rest on the drop piece, E. This drop piece is made of
brass, of the shape shewn, and is free to work round on the screw.
The position shewn in the front view is when the drop piece E has been pushed
up. In turning the cam shaped part of E has raised the loose core D. till it has
passed its highest point, when D falls, and prevents E from falling back.
Now on a current of electricity of suitable strength being sent through the
wire of the bobbin, the core B becomes magnetised. The loose core is also
magnetised, and the ends of each, which point to each other being of opposite
polarity, the loose core is attracted by the fixed one, and is drawn into the bobbin,
thus releasing the drop piece, which falls by gravity to the position shewn by the
dotted lines.

page_text: 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 :-
An electrical drop indicator, substantially as described, in which the drop piece
is released by a loose core being drawn into a bobbin of wire, either as a solonoid,
or with another core in the bobbin.
Dh: 14th d
Ad 1004
EBENEZER BEAL.