Year: 1899

page_text: WALTER ANDERSON DIXEY; 3, New Bond Street, London, Optician, do hereby
declare the nature of this invention to be as follows:-
In a dumb (or rigid) bridged folder the tops of the placquets are bifurcated,
notched, pointed or otherwise shaped, and the under surface of the bridge is
indented, grooved, divided or otherwise shaped, or the bridge is duplicated, in
such a way that, in the act of folding, the tops of the placquets are caught by,
and guided along the bridge; and that, when the folder is closed, the placquets
are held in position by the notch or point or other shape of the placquet fitting
into the indentation, groove, space or other shape on or in the bridge or double
bridge.
I, WALTER ANDERSON DIXEY, of 3, New Bond Street, London, 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 follow-
ing statement:-
This invention relates to improvements in eye-glasses, and refers more particu-
larly to that class known as dumb or rigid bridged eye-glasses, the object being
to construct eye-glasses in such a manner that while a rigid bridge is retained,
which by many is considered an essential feature, they may be readily folded
into a small space after the manner of ordinary "folders," and constructed with
ordinary metal frames.
For this purpose it is necessary that the extremities of the placquets should
freely pass each other in folding and opening the eye-glasses and this I effect
by constructing the bridge in such a manner and so forming the extremities of
the placquets, that in the act of folding or opening they are guided by the said
bridge which also serves to retain them in their proper relative positions when
the eye-glasses are closed or folded.
In order that this invention may be fully understood, I will now proceed to

page_text: describe same with reference to the accompanying drawings which illustrate
the essential features of this invention at an enlarged scale, and in which:
Fig. 1 is a front elevation of eye-glasses constructed according to this invention.
Fig. 2 is a plan of same, and
Figs. 3, 4 and 5-are details hereinafter referred to.
According to the method I preferably employ of carrying this invention into
practical effect, the bridge is duplicated or formed of two parallel bars a b, the
placquets a¹¹ being grooved, notched or recessed at their extremities as shewn.
In the open position of the eye-glasses as shown, the extremity of the
placquet a lies under the bar a of the bridge and in a like manner the extremity
of the placquet b₁ lies under the bar of the bridge, so that upon turning the
eyes m on their pivotal points m', the notched extremities of the placquets a¹ b¹
are brought into contact with the parallel bars a b of the bridge as. indicated in
dotted lines (Fig. 1) which serves to guide them and retain them in place when
the glasses are completely closed or folded.
This invention is capable of being modified and applied in several other ways
without departing from the principle of the invention.
As shown in Fig. 3 the bridge may consist of two parallel U-shaped bars c d
united at each end by a connecting piece k, while the placquets a b₁ are fur-
nished at their extremities with projecting parts c' engaging with the
U-shaped bars c d, forming the bridge, in the manner herein before described.
In the arrangement shown in Fig. 4 the bridge consists of a solid piece n
which is furnished upon its under surface with two parallel ribs f g designed
to engage with the notched extremities f¹ g¹ of the placquets a¹ 61 as shown.
In the arrangement shown in Fig. 5, the bridge again consists of a solid
piece furnished upon its under surface with two parallel grooves hi, while the
placquets a bare furnished at their extremities with correspondingly shaped
projecting parts h¹¹ which engage with the recesses h i formed in the bridge n.
in the manner and for the purposes herein before described.
Other shaped grooves or recesses or projections may be employed upon the
bridge and the extremities of the placquets, the essential feature of the inven-
tion consisting in certain projecting parts of the bridge engaging with grooves,
notches or recesses formed in the extremities of the placquets or vice versa, viz.:
suitably shaped projecting extremities of the placquets engaging with parallel
or other suitably shaped grooves, notches, or recesses formed in the under surface
of the bridge or in the under surfaces of the parallel bars forming the bridge
for the purpose of enabling the glasses to be readily folded or opened without
risk of the placquets catching or engaging and of retaining the placquets in
position when the glasses are closed.
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:-
1. The improvements in eye-glasses consisting in forming the bridge of two
parallel bars a band shaping the placquets a¹ b₁ so that in the operation of
folding the glasses the notched, grooved or recessed extremities of the placquets
engage with the said bars a b, substantially as herein described and shown with
reference to Figs. 1 and 2 of the accompanying drawings, and for the purposes
specified.
2/. The improvements in eye-glasses consisting in the construction of a bridge
furnished upon its under surface with longitudinal notches, grooves or recesses
in combination with placquets, the extremities of which are correspondingly
shaped or furnished with projecting parts to engage with the notches, grooves
or recesses of the bridge, substantially as set forth and for the purposes specified.
3. The improvements in eye-glasses consisting in the construction of a bridge
furnished upon its under surface with longitudinal ribs, or projecting parts,
in combination with placquets, the extremities of which are suitably notched,

page_text: grooved or recessed so as to engage with the ribs or projecting parts of the
bridge, substantially as set forth and for the purposes specified.
4. The modified forms of constructional details substantially as herein
described and shown with reference to Figs. 3, 4 and 5 of the accompanying
drawings.
KOTTAYA
CASSELL & Co.,
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.