IMPROVEMENTS IN SPECTACLES AND FOLDING EYE GLASSES
Year: 1884

page_text: I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex
Engineer do hereby declare the nature of this Invention for "IMPROVEMENTS IN
SPECTACLES AND FOLDING EYE GLASSES" and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:―
This Invention consists in covering the bridge of spectacles or the plaquet of
"folders" with an elastic material or a strip of such material so as to prevent
soreness and chafing of the skin when tho glasses are in continued use.
The plaquet a of a pair of "folders" which generally consist of metal to which in
some cases a thin plate of tortoiseshell or say horn is rivetted are, in the simplest
manner of carrying this Invention into practice fitted with a strip b of india rubber
and this strip may be fastened by cementing, rivetting or screwing as shown in
Figure 1.
Figures 2 and 2ª show plaquet a¹ in side elevation and transverse section and it is
so arranged that the elastic material or strip 61 is pinched in the grooves formed
by bending over the edges of the plaquet an adhesive or cement being used at the
same time if desired so as to further increase the security of the fastening. A
third manner of practising this Invention is, to cover the plaquet with a narrow
india rubber tube or to slip such tube on and it will then by reason of its elasticity
adapt itself to the shape of the plaquet a³ and is held in place by friction, as shown
in Figures 3 and 3ª.
In an analagous manner the bridge of a pair of spectacles may be covered with
elastic material to prevent pressure and chafing of the bridge of the wearers nose.
To this end a metal plate i bent to suit the shape of the nose may be attached
to the bridge d of the spectacles and the elastic material may be clamped in the
manner represented in Figure 2 by bending the edges over. Or the elastic
material is fastened upon the plate i by rivets or screws or by an adhesive or
cement.
Figure 5 shows the bridge of the nose wound with india rubber in the form of
bands or cords the ends of the same being fastened by rivets or screws m.

page_text: It is obvious that the elastic strip may be fastened by other means than those
above set forth for instance by small metal clamps by tying with wire, or by
sewing and the arrangements above stated are intended merely as examples how
the clastic material may be preferably attached.
The elastic material may be of any kind but india rubber leather, or cork may
be found the most applicable for the purpose. Woven or plaited textile material if
sufficiently elastic may also be used.
"
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
1. In spectacles and "folders" the application of elastic strips or of an elastic
padding to the bridge of spectacles and the plaquet of folders respectively said
strips being held in their place by rivets, screws, cementing tying or sewing or by
being clamped in a groove, substantially as shown in the accompanying Drawings.
2. The application of an elastic tube c (Figures 3, 3") slippled upon the plaquet a
of folding eye glasses; adapts itself to the shape of said plaquet and is maintained
in place by friction.