Improvements in Spring Folding Eyeglasses.
Year: 1891

page_text: Date of Application, 30th Nov., 1891
Complete Specification Left, 8th Aug., 1892-Accepted, 10th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Spring Folding Eyeglasses.
I, LOUIS EUGENE MARCHON, of 38, Rue Turbigo, Paris, France, Optician,
do hereby declare the nature of this invention to be as follows:-
My invention relates to spring folding eyeglasses or pince-ncz provided with
nose-clips situated when in use at an angle to the plane of the glasses so as to
enable them to grip the narrow part of the bridge of the nose beneath the over-
hanging part of the brow.
Heretofore it has been necessary in order to bring such inclined nose clips into
the same plane as the glasses when folded, to do so by a movement independent of
the folding operation, and my invention has for its object to cause the clips, to be
moved into or out of the plane of the glasses concurrently with and by the merc
act of folding or unfolding the pince-nez, this movement of the clips being produced
by a rocking motion or relative change of position between the rims of the frame
and the parts to which the ends of the spring bridge are fixed, acting cither through
jointed members or torsional springs or connections, as hereafter described.
The invention will be described with reference to the accompanying drawings;
wherein
Figure 1 represents a front view, Figure 2 a top view, and Figure 3 a side view,
of a pair of folding eyeglasses in position for use.
Figures 4 and 5 shew respectively a front view and plan of the same folded.
Figures 6, 7, 8, and 9, represent similar views of a slightly modified arrangement
on the same principle.
g
a is the spring bridge fixed to the blocks b jointed to the frames ff. ec are rigid
arms formed either by extensions of the spring a or fixed to blocks b, and are
radius links pivoted to said arms c. dd are the nose-clips pivoted at e to the
frames and jointed at their upper ends to the radius links gg. The result of the
arrangement is that, in the act of folding the glasses, the frames pivot about
the centres at and the extension arms being rigid, the distance between the
points e and c becomes shortened thus causing the radius link to describe the arc
shewn in dotted lines in Figure 2, so as to bring the clip d into the plane of the
frame when the glasses are in the closed position, shewn in Figures 4 and 5.
This action is favored by the relative directions of the axes of motion of the
members, which is moreover such as not to interfere with the elasticity of the
clips d which are as able to yield as though the upper end were entirely free,
so that the pince-nez can consequently easily adapt itself to noses of various
conformations.
The only difference in the modification shewn in Figures 6 to 9 is that the link
is in a vertical plane or nearly so while its centres are in a horizontal plane, the
automatic action of the clips in opening or folding the eyeglasses being the same in
both cases.
The movement of the clips in and out of their inclined position relatively to the
plane of the frames, may also be produced by the torsion of a spring connecting
member without joints as before described. The pivoting of the spring bridge to
the frame may be replaced by a small spring of greater flexibility soldered or
rivetted to the spring and to the rims of the frame.
Dated this 30th day of November 1891.
L. E. MARCHON,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.

page_text: COME DIN DI MULTIVATION.
Improvements in Spring Folding Eyeglasses.
I, LOUIS EUGENE MARCHON of 38, Rue Turbigo, Paris, France, Optician,
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 spring folding eyeglasses or "pince-nez" provided with
nose-clips situated when in use at an angle to the plane of the glasses so as to
enable the clips to grip the narrow part of the bridge of the nose beneath the over-
hanging part of the brow.
For convenience in carrying the glasses in the pocket or otherwise to avoid
injury to the nose-clips, it is desirable to bring such inclined nose-clips into the
same plane as the glasses when folded and it has heretofore been necessary to do
so by a movement independent of the folding operation, and my invention has for
its object to cause the clips to be moved into or out of the plane of the glasses
concurrently with and by the mere act of folding or unfolding the pince-nez, this
movement of the clips being produced by a rocking motion or relative change of
position between the rims of the frame and the parts to which the ends of the
spring bridge are fixed, acting either through jointed members or torsional springs
or connections as hereafter described.
The invention will be described with reference to the drawings left with my
Provisional Specification and also to the accompanying drawings, forming part of
this Specification, wherein
'
Figure 1 represents a front view, Figure 2 a top view, and Figure 3 a side view,
of a pair of folding eyeglasses in position for use.
Figures 4 and 5 shew respectively a front view and plan of the same folded.
Figures 6, 7, 8, 9, and 10, 11, and 12, represent similar views of slightly modified
arrangements on the same principle.
a is the spring bridge fixed to the blocks b pivot jointed to the frames ff. ce are
rigid arms formed either by extensions of the spring a or separately fixed to blocks b
and gare radius links pivoted to said arms c. dd are the nose-clips pivoted at e to
the frames and jointed at their upper ends to the radius links gg. The result of
the arrangement is that in the act of folding the glasses, the frames / pivot about the
centres at and the extension arms a being rigid, the distance between the points e
and c becomes shortened thus causing the radius link g to describe the arc shewn in
dotted lines in Figure 2, so as to bring the clip d into the plane of the frame f
when the glasses are in the closed position, shewn in Figures 4 and 5. This action
is favored by the relative directions of the axes of motion of the members which is
moreover such as not to interfere with the elasticity of the clips which are' as
able to yield as though the upper end were entirely free so that the pince-nez' can
consequently easily adapt itself to noses of various conformations.
The only difference in the modification shewn in Figures 6 to 9 is that each
link g is in a vertical plane or nearly so while its centres are in a horizontal or
nearly horizontal plane, the automatic action of the clips in opening or folding the
eyeglasses being the same in both cases.
The movement of the clips in and out of their inclined position relatively to the
plane of the frames may also be produced by the torsion of a spring connecting
member without joints as before described. The pivoting of the spring bridge to
the frame may be replaced by a small spring of greater flexibility soldered or
rivetted to the spring and to the rims of the frame.
In Figures 10, 11 and 12 the arms c instead of being rigidly fixed to the nose-
clips as previously described are fitted to slide through guide sockets / fixed upon
the pivoted blocks so that the two nose-clips tend to approach each other at the
upper part to an extent limited by the turned-up ends. This freedom of arms c

page_text: to slide enables the nose-clips to yield more readily and so adapt themselves more
easily to the nose which they grip with a lighter pressure.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what I
claim is
Folding eye-glasses or pince-nez, whereof the nose-clips are connected to blocks
pivoted to the frames and carrying the spring bridge by means of arms fixed to or
sliding in said blocks and of radius links pivoted and operating as described to
cause the clips to be moved into or out of the plane of the glasses by the act of
folding or unfolding the pince-nez, as specified.
Dated this 8th day of August 1892.
L. E. MARCHON,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.