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Octp29, 1946.
‘
G. v. DE LERY
-
2,410,272‘
POCKET READING GLASS
Filed April 5, 1944
INVENTOR
Gamma v. DE LERY _'
ATTORNEY
Patented Oct. 29, __1946
2,410,272
11; T3711 1
f"."_"jr'o_oKE'r READING GLASWS
'
George-dc Lery,'New York, N. Y. I‘ :
I
' "
Application April 5, 1944, serial no; 529,878 '
4 Claims.
1
This invention relates to reading glasses.
(01. 88-39)
one short side 13 and ?nger notch M on the op
posite long side I5 and spaced further away from
Broadly, it is an object of my invention to pro
short side l3 than ?nger notch I I.
vide a reading glass with comfortable thumb and
My preferred dimensions for the reading glass
?nger notches so that the reading glass can be
is the exact size shown in the drawing; that is,
easily held for a great length of time without
3%" long by 11/8" wide with notch ll between
tiring the user; the notches being disposed so
2A3" to 1/2” from short side Hi to the center of
as not ‘to interfere with the visual ?eld of the
the notch, and notch 14 is 3A” to the center of
lens.
the notch from short side l3. The thickness at
More particularly, it is an object of my inven
tion to provide a reading glass or lens for easy 10 the top (Fig. 2) in the center I6 is 10 millimeters
graded towards each end in variances of 1&4. of
handling as an aid to the eyes in their adjust
v a degree. The curvature of the glass totals 5.50
ments from distance to near-vision needs with
dioptres making it possible for practically any
out strain and without the need for the use of
variation
of a person’s eyes to bene?t by the
spectacles. However, if spectacles are worn it
15 different adjustments suitable to the proper read
will enhance the efficiency of the lens.
ing of print.
A further object of my lens is to eliminate the
It should be noted that the reading glass curves
both longitudinally as shown at H and laterally
as shown at [8, and is bisymmetric in shape. It
is important that the glass be annealed of prop
er mixtures of ingredients to form a?ue crown
nify without distortion due to spherical and
glass of a malleability and a de?nition in the
chromatic aberration.
index of refraction equal to a uniform ?gure of
Still a further object is to provide a lens of
1.5230. The glass is properly annealed before
a focal strength graduated over the entire length
and after moulding to the shape shown under
and width without variation of more than one 25 predetermined temperatures and ground and pol
quarter of a degree from any edge, thus provid
ished with the ?nest of abrasives.
ing an even distribution of spreading power and
The preferred method of holding my glass is
presenting parallel reading lines to the eye of
to place the index ?nger in notch H at right
the user.
angles to the glass with the thumb in notch M
A further object is to provide a reading glass
so that the glass is parallel to the reading sur
use of reading glasses which are mounted on the
face, thus making it more comfortable for the
reader. It is especially useful in cases of presby
opia; my lens being so designed as to clearly mag
of a focus so that it can be held about elbow
face as it is moved across the page.
length from the eyes; the reader using both
It will be found that the reading glass will
eyes to comfortably read the type without dis
focus well about elbow length from the eye so
tortion or color aberration.
that the forearm can pivot horizontally at the
Heretofore, lenses have been made that do not 35
elbow and will not be tiring to the reader.
give full vision and distort the characters so
It is obvious that various changes and modi?
that they are not of uniform height; further
cations
may be made somewhat in the details of
more, such lenses have chromatic and spherical
construction without departing from the general
aberration and are uncomfortable and too large
40 spirit of the invention, as set forth in the ap-_
for easy use.
pended claims.
My reading glass eliminates these disadvan
I claim:
tages; providing a pocket-sized glass of sufficient
1. A rectangular reading glass of the charac
magni?cation evenly distributed without distor
tion for easy reading and eye comfort, and
.especialy adapted for reading of print arranged
ter described having a ?nger notch on each of the .
45 long sides adjacent one short side, said glass
in columns.
For a fuller understanding of the nature and
objects of my invention, reference is had to the
being double convex with like opposed .curva
tures, the faces being convex both longitudinally
and transversely.
2. A rectangular reading glass of the charac
following detailed description in connection with
50 ter described having a ?nger notch on one long
the accompanying drawing, in which:
side near a short side and a ?nger notch on the
Fig. l is a plan View of my reading glass, and
opposite long side and near the said short side,
Fig.2 is a top view thereof.
said last named ?nger notch being further away
Referring to the drawing, numeral iii repre» '
from said short side than said ?rst named ?nger
sents a reading glass of rectangular shape with
notch, said glass being the central segment of a
a ?nger notch II on one long side l2 and near 55
3
2,410,272
double convex circular lens of like opposed curva
tures, the faces being convex, both longitudinally
and transversely, and the optical and geometric
centres and planes giving maximum and substan
tially equal magni?cation within its focal length
with no distortion or chromatic aberration.
3. A rectangular reading glass of the charac
ter described having a ?nger notch for the index
finger on one ‘long 'side adjacent '12, ‘short side _
4
ing maximum and substantially equal magni?~
cation within its focal length with no distortion
or chromatic aberration.
4. A rectangular reading glass of the charac
ter described three times longer than it is wide
and substantially 5.50 dioptres having a ?nger
notch on each of the long sides adjacent one
short side, said glass being the central segment
o'ffa 'do'uble convex circular lens of like opposed
and a ?nger n'o'tchz‘for the thumb ‘on the opposite 10 curvatures, the ‘faces being vconvex, ‘both longi
long side and further away from said short
tudinally and transversely, and the optical and
side than said index ?nger notch, said glass being ; geometric centres and planes giving maximum
the central segment of a, double convex circular ‘
lens of like opposed curvatures, the faces ‘being
convex, both longitudinally and transversely, and
the optical and geometric centres and planes giv
and substantially equal magni?cation within its
‘focal length with no distortion or chromatic
aberration.
GEORGE V. BE LERY.
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