Improvements in the Frames of Spectacles.
Year: 1889

page_text: Date of Application, 29th July, 1889
Complete Specification Left, 20th Mar., 1890-Accepted 26th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Frames of Spectacles.
I, DUNCAN MCKELLAR of 28 Ladbroke Grove Road, North Kensington, in the
County of Middlesex, Florist, do hereby declare the nature of this invention to be as
follows:-
:-
The chief object of this invention is to enable the wearer of spectacles when
wishing to dispense with the aid of the lenses to displace them without detaching the
spectacle frames from the face or to lift them on the brow or head as has to be done
with the spectacles in ordinary use. To effect this I make a bridge having a slot in
it at right angles to the meridian of the frame into which slot freely slides a bolt,
pin or screw. Attached to this bolt, pin or screw are two levers or arms, on one
end of each, the other ends of these levers or arms being securely fastened to the
rims which hold the lenses-this bridge and rims so made I fix to the frames on
which are the wings or sides that hold the frame to the head.
When the frame is on the face and the lenses in position for seeing through, and it
is desired to dispense with the aid of the lenses, by simply pushing one of the rims in
an upward direction both lenses will be simultaneously raised and be thrown out of
the line of vision, the rims and lenses so raised being kept in place by means of a
little spring catch locking automaticly on a slight projection on the edge of one of
the rims that hold the lenses and when it is required to use the lenses a slight
pressure on the top of one of the rims will cause both lenses to fall into the correct
position and enable the wearer to see as he would do when using ordinary
spectacles.
Dated this 90th day of Inle 1980
COMPLETE SPECIFICATION.
Improvements in the Frames of Spectacles.
I DUNCAN MCKELLAR of 28 Ladbroke Grove Road North Kensington in the
County of Middlesex Florist 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 :-
The chief object of this invention is to enable the wearer of spectacles when
wishing to dispense with the aid of the lenses to displace them without detaching the
spectacle frames from the face, or to lift them on the brow or head as is the case
with spectacles now in ordinary use.
In order that my invention may be clearly understood I have hereunto annexed a
sheet of drawings wherof Fig. 1. shows a pair of spectacles with the lenses in
position for seeing; Fig. 2 shows the lenses thrown out of the line of sight and
Figs. 3 and 4 show the parts detached.
In carrying out my invention I make a bridge a with a slot a¹ at right angles
to the meridian of the frame in which slot the bolt, pin, or screw a² freely slides.
Attached to this bolt, pin, or screw are the two arms the other ends of these
arms are pivotted to the levers b¹¹ which are securely fastened to the rims holding
the lenses (this will be clearly seen on reference to Fig. 3). The levers 61 6₁ are
hinged or pivotted at y y to the bridge a as shown.
frame c.
The bridge a with the rims and levers I fix by means of the rivets d d to the
On this frame are the wings or sides which hold the frame to the head.
When the frame is on the face and the lenses in position for seeing through (as
shown Fig. 1) and it is desired to dispense with the aid of the lenses-by simply
77

page_text: pushing on the rims in an upward direction both lenses will be simultaneously raised
and be thrown out of the line of vision, the parts assuming the position shown in
Fig. 2 of the drawings.
The rims and lenses so, raised may be held in such position by means of a spring
catch locking automatically on a slight projection provided for the purpose on the
edge of one of the rims and when it is desired to use the lenses a slight pressure on
the top of one of the rims will cause both lenses to fall into the correct position and
enable the wearer to see as he would do when using ordinary spectacles.
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 :-
Firstly. The improvements in spectacle frames whereby the lenses may be
raised from and lowered to the line of vision as herein set forth and shown in the
drawings.
Secondly. The combination of the various parts forming my improved spectacle
frames substantially as herein set forth and as shown in the drawings.
Dated this 20th day of March 1890.
DUNCAN MCKELLAR,
28, Ladbroke Grove Road, North Kensington, W.