Year: 1887

page_text: Date of Application, 17th Oct.. 1887
Complete Left, 20th Feb., 1888
Complete Accepted, 4th May, 1888
I, EDGAR PULLAR of No. 11 Queen Victoria Street, London, E.C. Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to the production of automatic apparatus for the application
of electrical currents to one or more persons for the purpose of restoring diminished
nerve power, and for the electrical treatment of disease generally, and has also for its
object the conservation of the energy of the battery when not in use.
-
In accordance with my invention I provide an ordinary galvanic battery of any
suitable kind, in conjunction with with a coil or helix of wire, which may be either
a primary wire for administering a direct intermittent primary current, or a secondary
wire may be wound upon the primary coil, in order to utilise an induced current of
higher potential.
The battery and coil with an automatic "make and break" contact of ordinary
form may be enclosed in a case of any suitable shape and design.
In order to prevent the wasting of the energy of the battery by the maintenance of
a closed circuit when a current is not required, and further to obviate the liability to
probable damage to, and consequent exhaustion of the battery by meddlesome people,
I arrange a slide of brass or other suitable metal terminating in a knob or handle
forming one of the conducting poles of the improved apparatus. The handle afore-
said upon being drawn out is arranged to vary the strength of the current according
to the degree to which said handle is drawn out, the current strength being determined
by a graduated scale marked upon the slider above mentioned. Said slider, which is
so arranged as to slide freely within suitable horizontal guides, is kept in its normal
position by the tension of a spring, and may be made to operate either by pushing
or by pulling against the tense spring, according to the requirements of the particular
type of apparatus.
A contact block, spring, brush or equivalent makes contact with the slider, and
completes the primary electrical circuit when the handle is slightly drawn forwards,
or pressed inwards as the case may be. At the end of the slider is attached the
magnetic core of the coil, so that the power of said coil, whether used as a primary
or induction coil, may be regulated by the proportion of the core inserted within, or
withdrawn from the helices

page_text: Upon, or in combination with the slider, above referred to, is pivotted or hinged a
pawl, catch or equivalent device which locks said slider in its normal position between
the guides, and, by means of a key or equivalent device, the pawl may be removed from
its locking position, thus enabling the slider to be drawn out, or pushed in, as the case
may be, and the apparatus brought into action. This arrangement according to my
invention, limits the use of the machine to the persons who possess the key, and any
irregular tampering with the apparatus is thereby avoided. As an alternative method
to the foregoing, of unlocking the mechanism, I may counterbalance the pawl above
mentioned, and arrange a shoot or channel way in such a manner that the dropping
therein of a coin of predetermined size and weight, will release said pawl, which latter
returns to its locking position by gravity, or by the pressure of a spring or equivalent
means, when the slider is in its normal position, and the apparatus is out of action.
The sliding handle forming, as above mentioned, one pole or electrode of the
battery, the other pole or electrode is formed by a fixed knob or handle, which is
electrically connected within the case.
1007

page_text: Improvements in Automatic Medical Electrical Apparatus.
I, EDGAR PULLAR of No. 11 Queen Victoria Street London E.C. 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:
My invention relates to the production of apparatus for the automatic application
of electrical currents to one or more persons for the purpose of restoring diminished
nerve power, and for the electrical treatment of disease generally, and has also for its
object the conservation of the energy of the battery when not in use.
In order that my invention may be the better understood I have appended the accom-
panying sheet of drawings in which Figure 1 is a side elevation and Figure 2 an end
elevation of the improved apparatus according to my invention exposing to view the
internal arrangement of the mechanism and Figure 3 illustrates a portion of a box or
case provided with a lever pull.
In carrying out my invention I provide one or more cells B of an ordinary galvanic
battery of any suitable type in conjunction with a coil or helix of wire C, which may
be either a primary wire for administering a direct intermittent primary current, or,
a secondary coil may be wound upon the primary coil, in order to utilize an induced
current of higher potential. The battery B and coil C with an automatic make and
break contact D of any ordinary type may be enclosed in a case A of suitable shape
and design.
In order to prevent the wasting of the energy of the battery by maintenance of a
closed circuit when a current is not required, and further to obviate the liability to
probable damage to, and consequent exhaustion of the battery by meddlesome people,
I arrange a slider E preferably rectangular in section of brass or other suitable
conducting material terminating in a knob or handle e to serve as one of the con-
ducting poles of the improved apparatus. The handle e and slider E aforesaid upon
being drawn out, are arranged to vary the strength of the current according to the
degree to which said handle e and slider E, are drawn out, the current strength being
determined by a graduated scale d marked upon one of the surfaces of the rectangular
slider E above described. Said slider E, which is arranged to slide freely within
horizontal guides is kept in its normal position by the tension of a spring a and may
be made to operate either by pushing in or by pulling out against the tense spring
according to the particular type of apparatus adopted.
A contact block, spring, brush or equivalent F makes contact with the slider E by
by means of the arm or pin, b, and completes the primary electrical circuit when the
handle e is slightly drawn forwards or pressed inwards as the case may be.
At the end of the slider E is attached the magnetic core of the coil, so that the
power of said coil, whether used as a primary or induction coil, may be regulated by
the proportion of the core inserted within or withdrawn from the helices.
Upon, or in combination with the slider E above referred to, is pivoted or hinged
a pawl, catch or equivalent G, which locks said slider E in its normal position between

page_text: the guides, and by means of a key or equivalent device the pawl may be removed
from its locking position, thus enabling the slider to be drawn out, or pushed in as the
case may be and the apparatus brought into action. This arrangement according to
my invention limits the use of the machine to those in possession of the key, and any
irregular tampering with the apparatus is thereby avoided. As an alternative method
to the foregoing of unlocking the mechanism I may counterbalance the pawl G by
attaching thereto a flap or shield c. Said flap or shield c which may however form
part of the pawl G is devised for the purpose of closing or partially closing a shoot or
channel H arranged in such a manner that upon the dropping therein through a slot k
in the lid or cover of the case or box A a coin of predetermined size and
weight, said coin falls upon and bears down the flap or shield c sufficiently to allow of
the pawl G disengaging with the catch upon the slider E thus allowing of the with-
drawal from or pressing in of said slider E. In the act of withdrawing the slider E,
the catch bears upon the curved part of pawl G raising it to a greater extent, by
which the coin is released and falls into a receptacle provided for the purpose in the
bottom of the box. Instead of employing a slider E as above described for closing
the electrical circuit may substitute therefor as an alternative a pivoted lever
Figures 3 and 6 having at its pivoted end a cranked extension or branch arm J per-
forated at its extremity with an elongated slot j. Said cranked extension J engages
with the forked end of the magnetic regulating core i, the are described by the crank J
upon the pulling forward of the lever I being compensated for by means of the
elongated slot j.
The mode of operating the apparatus, and the course followed by the current is as
follows: The slider E having been unlocked either by a key or by the insertion of a
coin in the shoot H raising the pawl G, the handle e (Figure 1 and 4) or lever I
(Figure 4) is gently pulled forward, in which action the primary circuit is closed at
the moment of contact being made between the pin and spring F, the current
flowing from say the zinc terminal Z to the coil of the make and break contact D,
thence by way of the pillar x to spring or brush F, arm or pin 6 through the primary
wire of the helix C to the other side c¹ of the battery. One wire of the secondary
coil of the helix is connected to the slider E the induced current flowing thence by
way of the handle D' through the body of the person holding to the other wire of the
secondary coil of the helix thus completing the secondary circuit.
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 :
First: The improved medical electrical apparatus substantially as herein described
and illustrated in the accompanying drawings.
Second-In an apparatus for the administration of a current of electricity to the
human frame the employment of a slider E or lever I attached to the magnetic
core provided with a contact arm or pin 6 in combination with an induction coil C,
make and break contact D and contact spring or brush F substantially as herein set
forth and shown.
Third-In the improved electrical apparatus herein described the mode of and
means employed for unlocking the mechanical arrangement substantially as herein set
forth and shown.
Dated this Seventeenth day of Fohmo- 1000
000
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.