Year: 1894

page_text: A communication to me from MAX SEYFFERT, of 43, Kiel' Strasse, Bremen, in the
Empire of Germany, Doctor of Medicine..
I, EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 65 and. 66, Chancery Lane, in the County of Middlesex, do hereby
declare the nature of this invention to be as follows:-
This invention relates to spring eye-glasses, and it has for its object a novel
method of construction, by which an extremely firm grip upon the nose is
obtained.
This object is obtained by the use of two pairs of C-shaped, springs, one end of
which is secured to a shoulder upon the lower side of the frames of the lenses,
whilst the other end. of each of these springs is provided with a loop. Through
each of these loops pass the projecting ends of a fork fixed to the upper sides of
the frames of the lenses. The said forks serve to guide the C-shaped springs when
they are compressed during the use of the glasses.
The inner ends of the forks on both sides, and thus together with them the inner
C-shaped springs, are turned somewhat outward from the plane of the lenses. The
inner loops on either side move at angles with each other, so, as to move the double
springs in two planes inclined to each other.
-:
By the above-described arrangement, the following advantages are attained:-
1. The folding eye-glasses have an extremely firm grip upon the nose, which is
caused in the following way: The two springs at either side moving at angles
approach each other when the glasses are put on, and slightly raise the skin in the
intervening space, so as to form a small fold which increases the firm hold of the
glasses.
2. Any deviation to either side is impossible, and the glasses are not shaken by
any violent movement of the head. The two pairs of springs, being some
distance apart, have a much wider basis, so as to offer a far better resistance to
pressure made to bear upon them from any direction, than is the case with,
single springs.
3. The pressure is only half of that of the usual glasses having single springs,.
the pressure being distributed upon two double springs, which yield so easily that
they leave no mark behind, and may be worn without inconvenience upon the most
sensitive nose.
4. They adapt themselves to any shape of the nose, first because all four springs
are very elastic, and second because the two inner springs are directed away from
the folders, so that they even take a firm grip of those noses which recede at
the root.
5. On account of their perfect stability, and the above-mentioned angular
position of the inner springs, the glasses are kept constantly at right angles to the
visual axis, and do not shift their focus, which is an end most desirable from a
medical point of view, and which enables these glasses to replace the disfiguring
spectacles ordinarily used.

page_text: A communication to me from MAX SEYFFERT, of 43, Kiel Strasse, Bremen, in the
Empire of Germany, Doctor of Medicine.
I, EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 65 and 66, Chancery Lane, in the County of Middlesex, 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, and accompanying drawing, that is to say :-
This invention relates to spring eye-glasses, and it has for its object a novel
method of construction, by which an extremely firm grip upon the nose is
obtained.
The accompanying drawing is in illustration of the invention, and represents a
perspective view of a pair of eye-glasses.
The required object is obtained by the use of two pairs of C-shaped springs, b, c,
one end of which is secured to a shoulder n upon the lower side of the frames d, d¹
of the lenses, whilst the other end of each of these springs is provided with a
loop e. Through each of these loops e passes one of the projecting ends r, s, of
a fork g upon the spring bow a, which is fixed at m to the upper sides of the
frames d of the lenses. The said forks serve to guide the C-shaped springs
when they are compressed during the use of the glasses.
The inner ends r, r, of the forks on both sides, and thus together with them
the inner C-shaped springs bb, are turned somewhat outward from the plane of
the lenses. The inner loops e, e, on either side move at angles with each other,
so as to move the double springs b, c, in two planes inclined to each other.
By the above-described arrangement, the following advantages are attained :-
1. The folding eye-glasses have an extremely firm grip upon the nose, which is
caused in the following way: The two springs b, c, at either side moving at angles
approach each other when the glasses are put on, and slightly raise the skin in the
intervening space, so as to form a small fold which increases the firm hold of the
glasses.
2. Any deviation to either side is impossible, and the glasses are not shaken by
any violent movement of the head. The two pairs of springs, being some
distance apart, have a much wider basis, so as to offer a far better resistance to
pressure made to bear upon them from any direction, than is the case with
single springs.
3. The pressure is only half of that of the usual glasses having single springs, the
pressure being distributed upon two double springs, which yield so easily that they
leave no mark behind, and may be worn without inconvenience upon the most
sensitive nose.
4. They adapt themselves to any shape of the nose, first because all four springs
are very elastic, and second, because the two inner springs are directed away from
the folders, so that they even take a firm grip on those noses which recede at
the root.
5. On account of their perfect stability, and the above-mentioned angular
position of the inner springs, the glasses are kept constantly at right angles to the
visual axis, and do not shift their focus, which is an end most desirable from a
medical point of view, and which enables these glasses to replace the disfiguring
spectacles ordinarily used.

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:
The improved eye-glasses, characterized by the double C-shaped springs b, c, one
end of which is secured to the frame d, whilst the other end is provided with slots
in which the ends r, s, of a fork g are guided, substantially as and for the purposes
set forth and illustrated.
Dated this 12th day of March 1895.
EDWARDS & Co.,
65 and 66, Chancery Lane, Agents for the Applicant.