Year: 1888

page_text: Date of Application, 28th July, 1888
Complete Specification Left, 17th Apr., 1889
Complete Specification Accepted, 8th June, 1889
I, Castle Smith, of 54 Fleet Street in the City of London Gentleman do hereby
declare the nature of this invention as communicated to me from abroad by
R. Blaensdorf Nachfolger, Kaiserstrasse Frankfort on the Maine to be as follows :-
This invention relates to an electrical lighting apparatus for medical and surgical
purposes by the aid of which operations and observations are more quickly and
efficiently conducted than heretofore.
The invention is constructed in the form of a pair of spectacles between the eye
pieces of which an incandescent lamp is fitted.
The spectacle frame is made of ivory, horn, or other insulating material in which
the connecting wires leading from a suitable battery are laid and carried to the
bridge on to which is affixed a socket open at the front. This socket is made of some
insulated material and carries the incandescent lamp within it. The connecting wires
being led thereto from the bridge. In front of the Lamp, a small lens may be fitted
if required.
On to the eye pieces of the spectacle frame two light oval or other shaped tubes are
fitted and made of black papier mache or similar substance for the purpose of protecting
the eyes of the user from the electric light. The whole being so arranged as to cause
the rays of light and the line of sight to converge towards the same point. Suitable
glasses may be fitted in the spectacle frame to assist the vision if required.
n: 20th day of In 1888
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant. -

page_text: COMPLETE SPECIFICATION.
An Electrical Lighting Apparatus for Medical and Surgical
Purposes.
I, CASTLE SMITH, of 54 Fleet Street, in the City of London, Gentleman, do hereby
declare the nature of this invention (as communicated to me from abroad by R.
Bläensdorf Nachfolger, Kaiserstrasse, Frankfurt on the Maine, in the Empire of
Germany), 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 an electrical lighting apparatus for Medical and Surgical
purposes by the aid of which, operations and observations are more quickly and
efficiently conducted than heretoforc.
The invention is constructed in the form of a pair of spectacles, between the eye
pieces of which an incandescent lamp is fitted. The spectacle frame is made of ivory,
horn, or other insulating material, in which the connecting wires leading from a
suitable Battery are laid and carried to the bridge, on to which is affixed a socket
open at the front. This socket is made of some insulating material, and carries the
incandescent lamp within it, the connecting wires being led thereto from the bridge.
In front of the lamp a small lens may be fitted if required.
On to the eye pieces of the spectacle frame two light oval or other shaped tubes
are fitted and made of black papier mache or similar substance for the purpose of
protecting the eyes of the user from the electric light. The whole being so arranged
as to cause the rays of light and the line of sight to converge towards the same point.
Suitable glasses may be fitted in the spectacle frame to assist the vision if required.
And in order that this invention may be well understood and carried into practice,
I will now proceed to describe the same with reference to the accompanying drawings
in which similar letters indicate corresponding parts in both figures.
Figure 1 is an elevation and Figure 2 a plan of the invention.
The apparatus consists of two metallic eye rings F and L connected by an insulating
horn bow the whole having the appearance of a pair of metallic dust-goggles. On
each of the rings F and La strip of metal is soldered at i and k which support the
capsule CD, the latter being open in front but the back part formed of some insulating
material. The ends and r¹ of the metal strips are connected with the conducting
wires h and h¹ of the incandescent lamp B enclosed in the capsule C, D. A convex
lens s can be fixed in front of the incandescent lamp B. Two light oval tubes of black
card-board or similar material a and a¹ are fastened on to the eye frames F and L.
These serve, on the one hand to conceal the capsule CD from the eyes of the
investigating Surgeon or other person, and on the other hand act as a screen for the
eyes. The conducting wires c and d coming from the Battery are securely connected
with the frames F and L at ¹ and k². The current flows through the wires towards
and k¹ then over r and 1 to the incandescent lamp by h and h.

page_text: Where a lamp giving a very strong light is employed the spectacles must be
manufactured of ivory, or horn with the conducting wires inlaid in order to prevent
any conduction of heat to the eyes. ef, ef are slots for spectacle glasses.
Having now particularly described and ascertained the nature of my said inven-
tion, as communicated to me from abroad, and in what manner the same is to be
performed, I declare that what I claim is :-
An electric lighting apparatus in spectacle form for Surgical and Medical purposes,
in which the incandescent lamp B, enclosed in a capsule, is fixed between two tubes a
and a fastened on to the eye frames F and L, substantially as hereinbefore set forth
and illustrated in the accompanying drawings.
CASTLE SMITH,
Invention" Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant.