An Improved Apparatus for Conveying the Light Evolved from an Incandescent Electric Lamp into Parts or Cavities of the Human or Animal Body for Surgical, Dental, or other
Year: 1884

page_text: An Improved Apparatus for Conveying the Light Evolved from
an Incandescent Electric Lamp into Parts or Cavities of
the Human or Animal Body for Surgical, Dental, or other
Dunna
I, PAUL WARD, of 24 Woodlands Park Road, Greenwich, in the County of
Kent, Electrician, do hereby declare the nature of my said Invention for
" AN
IMPROVED APPARATUS FOR CONVEYING THE LIGHT EVOLVED FROM AN
INCANDESCENT ELECTRIC LAMP INTO PARTS OR CAVITIES OF THE HUMAN OR
ANIMAL BODY FOR SURGICAL, DENTAL OR OTHER PURPOSES," to be as follows:-
:-
The object of this Invention is to construct a cheap and easily manipulated means
of lighting or illuminating parts or cavities of the human or animal body which
it is impossible to examine properly, or to minutely inspect, unless. the light is
thrown upon, or is in close proximity to, the part under examination.
The illumination lastly referred to has hitherto been ordinarily effected by
reflectors throwing light from some external source into the part of the body to be
examined, or such part has been made transparent by some source of light arranged
behind the same.
Further, instruments have been employed for the same purpose wherein the light
has been obtained by means of the incandescence of a platinum or carbon filament
or other material having the required electrical resistance.
In using instruments of the nature lastly referred to the source of light itself
was inserted into the part of the body or other object to be examined and in order
to overcome the heat developed by the incandescence of the platinum or other
material, water was caused to circulate around the case enclosing the same so as to
render the heat harmless to the patient.
The object of this invention is to provide an instrument whereby the part to be
examined may be illuminated by means of a combination of parts (hereinafter
described) of such a nature that illumination may be obtained without the patient
feeling the slightest heat, the size of the light conducting instrument is reduced to
a minimum and the same is so constructed that the source of light itself shall be
some distance away from the patient, whilst at the same time none of the light is
lost, the whole of the illumination being, when desired, conveyed into the parts of
the body to be examined.
In effecting the object of this invention I employ, as the source of light, an
incandescent electric lamp, that is to say, an incandescent filament or surface of

page_text: carbon, platinum or other suitable material, encased in a glass or other envelope in
the usual manner and which envelope or casing is fused, sealed or otherwise
attached to one end of a solid glass rod or tube filled with a dense liquid,
transparent, homogeneous, conductor of light, such as water or alum and water or
other suitable material which would absorb the heat rays and allow the light to
pass, and which is as near the specific gravity of glass as possible. The said rod
or tube is hereinafter termed the conductor. The end of the conductor nearest to
the incandescent filament or surface is of a lenticulated or other form as may be
found most suitable. The opposite or free end of the conductor is of a lenticulated,
curved, tapered, bent or other form as may be found necessary to suit the purpose
for which the instrument is being employed. The whole or part of the outer
surface of the conductor is covered with a silver or other suitable reflecting film
The
for preventing any loss of light during its conveyance along the same.
envelope or casing of the lamp is, when desired, covered in a similar manner.
When it is desired to use the instrument hereinbefore described the filament or
surface of the lamp is rendered incandescent by an electric current generated by
any suitable means, as will be well understood, and the light or illumination
produced is conveyed along the conductor and is distributed at the free end thereof
which end is inserted into the part or cavity which it is desired to examine. By
these means I obtain a brilliant illumination of such part or cavity totally free
from heat.
h
When required, a lense may be placed in any suitable manner between the lamp
and the conductor so as to condense the light.
When it is desired to administer fluids to the part or cavity illuminated by the
instrument forming the subject of this invention the solid-glass rod can be formed
with a channel through its length or a tube may be fused to the side of the glass
rod or tube, constituting the conductor, and the fluid, which is contained in any
desired receptacle, but, by preference, in a flexible bag, may be injected, as desired,
through the said channel or tube as will be well understood. I do not desire to
claim the application of the said means for administering fluids as constituting any
part of this Invention.
It will be obvious that prisms or other means may be employed for reflecting to
the eye the part or cavity for which the instrument, forming the subject of this
invention is employed to illuminate..

page_text: I, PAUL WARD; formerly of 24 Woodlands Park Road, Greenwich, in the
County of Kent, but at present residing at N° 2 Holcroft Terrace, High Street,
Fulham, in the County of Middlesex, Electrician, do hereby declare the nature of
my Invention for "AN IMPROVED APPARATUS FOR CONVEYING THE LIGHT EVOLVED
FROM AN INCANDESCENT ELECTRIC LAMP INTO PARTS OR CAVITIES OF THE HUMAN
OR ANIMAL BODY, FOR SURGICAL, DENTAL OR OTHER PURPOSES," and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The object of my said Invention is to construct a cheap and easily manipulated
means of lighting or illuminating parts or cavities of the human or animal body
which it is impossible to examine properly, or to minutely inspect unless the light
is thrown upon, or is in close proximity to, the part under examination.
The illumination lastly referred to has hitherto been ordinarily effected by
reflectors throwing light from some external source into the part of the body to be
examined, or such part has been made transparent by some source of light arranged
behind the same.
•
Further, instruments have been employed for the same purpose, wherein the
light has been obtained by means of the incandescence of a platinum or carbon
filament or other material having the required electrical resistance.
In using instruments of the nature lastly referred to the source of light itself was
inserted into the part of the body or other object to be examined, and in order to
overcome the heat developed by the incandescence of the platinum or other material,
water was caused to circulate around the case enclosing the same so as to render
the heat harmless to the patient.
The object of my said Invention is to provide an instrument whereby the part
to be examined may be illuminated by means of a combination of parts, (hereinafter
described), of such a nature that illumination may be obtained without the patient
feeling the slightest heat, the size of the light conducting instrument is reduced
to a minimum, and the same is so constructed that the source of light itself shall
be some distance away from the patient, whilst, at the same time, none of the light
is lost, the whole of the illumination being, when desired, conveyed into the parts
of the body to be examined.
.In effecting the object of my said invention I employ, as the source of light, an
incandescent electric lamp, that is to say, an incandescent filament or surface of
carbon, platinum or other suitable material, encased in a glass or other envelope
in the usual manner, and which envelope or casing is fused, sealed or otherwise
attached to one end of a solid glass rod, or tube filled with a dense, liquid,
transparent, homogeneous conductor of light, such as water or alum and water or
other suitable material which would absorb the heat rays and allow the light to
pass and which is as near the specific gravity of glass as possible. The said rod or
tube is hereinafter termed the conductor. The end of the conductor nearest to the
incandescent filament or surface is of a lenticulated or other form as may be found
most suitable. The opposite or free end of the conductor is of a lenticulated,
curved, tapered, bent or other form as may be found necessary to suit the purpose
for which the instrument is being employed. The whole or part of the outer
surface of the conductor is covered with a silver or other suitable reflecting film
for preventing any loss of light during its conveyance along the same. The envelope
or casing of the lamp is, when desired, covered in a similar manner.

page_text: -
When it is desired to use the instrument hereinbefore described the filament or
surface of the lamp is rendered incandescent by an electric current generated by
any suitable means, as will be well understood, and the light or illumination produced
is conveyed along the conductor and is distributed at the free end thereof, which
end is inserted into the part or cavity which it is desired to examine. By these
means I obtain a brilliant illumination of such part or cavity totally free from heat.
When required, a lense may be placed in any suitable manner between the.lamp
and the conductor so as to condense the light.
When it is desired to administer fluids to the part or cavity illuminated by the
instrument forming the subject of my said invention the solid glass rod can be
formed with a hole or passage through its length or a tube may be fused to the
side of the glass rod or tube, constituting the conductor, and the fluid, which is
contained in any desired receptacle, but, by preference, in a flexible bag, may be
injected, as desired, through the said hole or passage or tube as will be well
understood.. I do not desire to claim the application of the said means for
administering fluids as constituting any part of this invention.
It will be obvious that prisms or other means may be employed for reflecting to
the eye the part or cavity for which the instrument forming the subject of this
invention is employed to illuminate.
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
The combination and arrangement of parts consisting of a glass rod or tube
filled with a dense, liquid, transparent, homogeneous conductor of light, which is
as near the specific gravity of glass as possible, to one end of which is fused, sealed
or otherwise attached an incandescent electric lamp, substantially as and for the
purposes hereinbefore set forth and described.
.
Dated this fourth day of November One thousand eight hundred and eighty