Improvements in or relating to Pince-nez and analogous Eye-glasses and Spectacles.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Pince-nez and analogous Eye-glasses
and Spectacles.
I, JAMES AITCHISON, of 47, Fleet Street, London, E.C., Optician, do hereby
declare the nature of my said invention to be as follows:-
My invention relates more particularly (but not exclusively) to that class of
eye-glasses or spectacles which are formed with a firm or rigid bridge connecting
the lens frames, and consists in improved constructions and arrangements of
the springs to which the placquets are attached.
According to my invention I make use of stranded or plain wire of a suitable
gauge and temper from which I fashion the springs. The springs are formed
approximately to the letter V (inverted) and bent or curved to the shape of
the frame, or thereabouts. The upper end or apex is rigidly attached (at a
suitable angle) to the upper end of the placquet and the lower ends are adjust-
ably clamped to a suitable projecting plate or lip integral with the frame.
bow or loop is preferably attached to the lower end of the placquet so as to limit
its range of motion relatively to the spring and to strengthen or support its
connection therewith.
A
The clamping device admits of a ready adjustment of the spring to the desired
position to suit any form of nose, and may be adapted for use with flat metal
springs the lower ends of which are slotted to allow of adjustment.
The upper end of the spring may be bent over and extended downward, the
placquet being attached to the downwardly projecting portion.
Similarly, the wire may be used singly to form the spring, one limb being
curved to the shape of the frame and clamped thereto in the manner described
and the other limb carrying the placquet; also in some cases the upper ends of
the placquets may be provided with auxiliary springs.

page_text: Improvements in or relating to Pince-nez and analogous Eye-glasses
and Spectacles.
I, JAMES AITCHISON, of 47, Fleet Street, London, E.C., Optician, do hereby
declare the nature of my said 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 more particularly (but not exclusively) to that class of
eye-glasses or spectacles which are formed with a firm or rigid bridge connecting
the lens frames, and consists in improved constructions and arrangements of
the springs to which the placquets are attached.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings in which similar
letters of reference indicate corresponding parts.
Fig. 1 represents a rigid bridge pince-nez frame fitted with my invention.
Fig. 2 is a plan view of a portion of same drawn to an enlarged scale.
Fig. 3 is a detail sectional view drawn to a still larger scale.
Fig. 4 is a modification of the device illustrated in Figs. 1 and 2, drawn in
perspective.
a, a represent the lens frames and the rigid bridge, which may be formed
in any of the usual shapes or patterns.
I make use of stranded or plain wire of a suitable gauge and temper from which
I fashion the springs c, c; as shown in Figs. 1 and 2, the wire is bent over upon
itself and its ends are secured at an angle in suitable sockets or otherwise
attached to the placquets d at e, at which point the ends of the wire are nearly
in contact. The lower end of the placquet is provided with a bow f to limit its
range of motion relatively to the spring and to strengthen or support its connec-
tion therewith. The lower end of the wire spring is secured to the lens frame
by a clamping device, more clearly shown in Fig. 3. g is a projecting lip or
plate integral with the frame a; this plate is formed with two grooves to
accommodate the two wires of the spring, and a removable plate hand screw i
are provided by means of which the wires are clamped in the desired position,
as illustrated. In some cases the bend of the wire is attached to the placquet
and the ends of the wire are secured by the clamp.
Fig. 4 is a modification in which the spring is formed of duplex wires c, c
adjustably secured by the clamp device ghi and the upper ends are bent over
and extended downwards as at c¹, the placquet being fixed or adjustably con-
nected to the downwardly projecting portion. Similarly a single wire may be
used to form the spring as will be readily understood with reference to Fig. 4.
When necessary the upper ends of the placquets may be provided with auxiliary
springs, such as a bow or C or other similar type. Also flat steel or metal springs
which are slotted at their lower ends may be used with the clamping device
herein described so as to permit of their adjustment.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what
I claim is:-
1. A spring for the placquets of pince-nez and analogous eye-glasses, and
spectacles, formed of stranded or plain wire secured to the placquet and to the
lens frame, substantially as set forth.
2. A spring for the placquets of pince-nez and analogous eye-glasses, and
spectacles, formed of wire (stranded or otherwise) bent and connected to the

page_text: placquet, and adjustably secured to the lens frame by a clamping device,
arranged substantially as hereinbefore described and illustrated by Figs. 1, 2
and 3 of the drawings.
3. In springs formed of wire, the modifications substantially as hereinbefore
described with reference to Fig. 4 of the drawings.
4. The particular constructions, combinations and arrangements of springs
for placquets, substantially as set forth.
TX
1
L
1000
JAMES AITCHISON.
By George Downing & Sons,
Chartered Patent Agents, 8, Quality Court, London, W.C.