A New or Improved Maximum Electric Current Self-recording Instrument.
Year: 1898

page_text: Date of Application, 7th May, 1898
Complete Specification Left, 7th Feb., 1899-Accepted, 11th Mar., 1899
PRUVIDIUNAL
SPECIFICATION.
A New or Improved Maximum Electric Current Self-recording
Instrument.
I, FRANCIS MALGER STAUNTON, of 2, Hainault Villas, Harold Wood, Romford,
in the County of Essex, Electrician, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to a new or improved maximum electric current self-
recording instrument.
According to my present invention I pass the whole (or part i.e. a known
part) of the current of the lamp circuit through an electro-magnet or coil which
latter when thus energised and according to the strength of said current passing
therethrough will suck into same a core or draw towards same an armature or
equivalent such core or armature etc. being connected to a ring or device
(having a channel or passage-way therein) adapted to rock or revolve or roll or
be otherwise moved in suchwise that a movable substance in such ring or device
(for instance mercury) will be caused to act on a movable indicator (which latter
may for instance consist of a detached pin or body) adapted to fit within said
ring or device and advantageously of a springy nature so that while such indi-
cator can readily be pushed along in said ring yet same will not slide or move
therein of itself.
A spring or other suitable means may be employed to restore said ring or
device to its normal or zero position said device advantageously consisting of
a glass tube in the form of a ring sealed up and containing a small quantity of
mercury therein and a "float" or indicator fitting within said glass tube and
adapted to be pushed along by the mercury as the glass ring is revolved.
Any suitable scale or index being provided on or in connection with the said
glass ring or device.
The operation is as follows:-
To set the instrument ready-the core or armature is at its normal position
as when no current is passing and the "indicator" in the ring or device is brought
(by a magnet or other suitable means) into position proximate to the mercury
lying at rest in the lowermost portion of the ring.
66
"
As soon as the ring is rotated by the action of the solenoid or equivalent
thereupon the mercury pushes the indicator along in the glass ring and when the
return motion of the ring takes place the indicator remains fixed in the
furthest position to which same has been pushed by the mercury and such altera-
tion of position of the "indicator" is the measure (or an indication) of the
maximum current which has passed.
Dated th
1000
TONGUE & BIRKBECK.
Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.

page_text: A New or Improved Maximum Electric Current Self-recording
Instrument.
I, FRANCIS MALGER STAUNTON, of 2, Hainault Villas, Harold Wood, Romford,
in the County of Essex, Electrician, do hereby declare the nature of this inven-
tion 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 a new or improved maximum electric current self-
recording instrument.
According to my present invention I pass the whole (or part i.e. a known
part) of the current of the lamp circuit through an electro-magnet or coil which
latter when thus energised and according to the strength of said current passing
therethrough will suck into same a core or draw towards same an armature or
equivalent such core or armature etc. being connected to a ring or device
(having a channel or passage-way therein or a tube carried thereon) adapted to
rock or revolve or roll or be otherwise moved in suchwise that a movable sub-
stance in such ring or device or tube thereon (for instance mercury) will be
caused to act on a movable indicator (which latter may for instance consist of
a detached pin or body) adapted to fit within said ring or device or tube thereon
and advantageously of a springy nature so that while such indicator can readily
be pushed along in said ring or tube yet same will not slide or move therein of
itself.
A spring or other suitable means (for instance a magnet) may be employed
to restore said ring or device to its normal or zero position-said device advan-
tageously consisting of a glass tube in the form of a ring sealed up or an open-
ended circular shaped glass tube on a circular frame ring or disc-and containing
a small quantity of mercury therein and a
"float"
or indicator fitting within
said glass tube and adapted to be pushed along by the mercury as the glass ring
is revolved.
Any suitable scale or index is provided on or in connection with the said
glass ring or device.
The operation is as follows:-
To set the instrument ready-the core or armature is at its normal position
as when no current is passing and the "indicator" in the ring or device (glass
tube) is brought (by a magnet or other suitable means) into position proximate
to the mercury lying at rest in the lowermost portion of the ring.
As soon as the ring is rotated by the action of the solenoid or equivalent there-
upon the mercury pushes the indicator along in the glass ring and when the
return motion of the ring takes place the “ indicator remains fixed in the
furthest position to which same has been pushed by the mercury (i.e. by the
rotation of the glass tube) and such alteration of position of the indicator is the
measure (or an indication) of the maximum current which has passed.
Referring to the accompanying drawings:-
Fig. 1 is a front view in elevation of an instrument according to my present
invention at zero.
Fig. 2 is a view looking in the direction of the arrow 2 Fig. 1.
Fig. 3 is a plan.
Fig. 4 is front elevation-showing the ring revolved through part of a circle
as in use.
a is stand.
6 is ring-like frame pivoted in said frame a and adapted to be rotated upon its
axis c.

page_text: тие
Is at zero as shown in Fig. 1 in which position the narrowed
portion of the tube d is between the mercury and the indicator which
latter is brought or moved into this position in any suitable manner-for instance
by a magnet.
The main current (or a portion thereof) is passed through the coil g and draws
the core into same to a greater or less extent according to the amount of current
passing and thereby (by means of the crank e) the ring frame 6 is revolved
according to the distance the core f is sucked into the coil 9 and consequently
the mercury will flow through the neck d* and pushes the float or indicator x
along in front of same in the tube d as shown in Fig. 4-the object of the nar-
rowed portion d being to prevent the mercury rushing or flowing too quickly
round the tube d in the event of any sudden rotary movement being imparted
to the ring frame a and tube d thereon.
On the current ceasing or lessening in the coil g the ring frame returns to or
towards its normal position (the counterbalance y assisting this) and the mercury
flows back through the neck d but the float or indicator a remains at the further-
most point to which same has been pushed by the mercury and so automatically
registers or indicates on the scale marked on the face of the ring b the maximum
amount of current which has passed.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:
1. A maximum electric current self-recording instrument consisting of a
circular tube adapted to be revolved and containing a body of mercury therein, a
movable indicator or float in said tube adapted to be moved along in said tube
by the mercury therein when said tube is revolved, a solenoid or coil in connec-
tion with the current to be recorded, a core in said solenoid or coil and a con-
nection between said core and said revolvable frame whereby the latter is revolved
to a greater or less extent according to the amount of current passing.
2. A maximum electric current self-recording instrument consisting of a cir-
cular tube adapted to be revolved and containing a body of mercury therein,
a contracted neck or narrowed portion in said tube to retard any too sudden flow
of the mercury, a movable indicator or float in said tube adapted to be moved
along in said tube by the mercury therein when said tube is revolved, a solenoid
or coil in connection with the current to be recorded, a core in said solenoid or
coil and a connection beween said core and said revolvable frame whereby the
latter is revolved to a greater or less extent according to the amount of current
passing.
3. A maximum electric current self-recording instrument, consisting of a ring
frame such as 6 adapted to revolve around its axis c mounted on a support a, a
curved glass tube such as d carried on said ring frame, mercury in said tube,
a float or indicator such as a in said tube d and adapted to be moved along

page_text: therein by said mercury, a solenoid or coil such as g and a core such as f therein,
and a connection such as the crank arm e by which said core will revolve or
rock said frame a and glass tube & thereon and so move the indicator x, com-
bined and arranged to act substantially as and for the purposes hereinbefore
set forth.
TONGUE & BIRKBECK,
Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.