Spectacles Page: 2 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
JAMES'I.W. DONALDSON, OF HOUSTON, TEXAS.
SPECTACLES.-Specification of LettersPatent. ?atented May. 3, 1910.
Application filed November 9, 1909. Serial No. 526,956.To all whom it may concern:
Be it known that I, JAMES W. DONALD-
soN, a citizen of the United States, residing
at Houston, in the county of Harri and
5 State of Texas, have invented certain new
and useful Improvements in Spectacles, of
which the following is a specification.
My invention relates to new and useful
improvements in spectacles and more par-
10 ticularly to that type which are adapted
solely for reading and similar near vision
use.
The object of the invention is to provide
spectacles comprising lenses arranged in
I5 such relation to their supporting members
as to be constantly maintained below. the
eyes of the user and thus afford a clear
vision of objects at the normal line of sight
above the lenses, at the same time present-
20 ing'said lenses in proper position to be used
for reading or similar purposes requiring
the down cast vision of the user.
A further object of the invention is to
provide a construction whereby the coinci-
25 dence of the top of the lens or its supporting
frame and the line of vision is obviated.
With the above and other objects in view
my invention has particular relation to cer-
tain novel features of construction, arrange-
30 mient and combination of parts, an example
of. which is described in this specification
and illustrated in the accompanying draw-
ings, wherein:
Figure 1 is a front elevation of a pair of
35 . spectacles constructed in accordance with
the invention, the lens supporting member
being of the ordinary formation; Fig. 2 is
a similar view with- the lens supporting
frame members of substantially semi-ellip-
40 tical formation; Fig. 3 is a top plan view of
the form shown in Fig. 2.
Referring now more particularly to the
drawings, wherein like numerals, of refer-
ence designate similar parts in each of the
45 figures, the numeral 5 refers to a pair of
rims connected together by a nose bridge 6,
said rims and bridge comprising the main
frame of the spectacles as shown in Fig. 1.
The outer end of each rim 5 is provided
50 with an outwardly and rearwardly project-
ing shoulder 7 in which the bows 8 are piv-
otally mounted. The nose bridge 6 connect-
ing the rims 5 is of the usual and. well
known construction.
55 Mounted in each of the rims 5 are the
lenses 9 which lenses are mounted in thelower portion of the rim 5 by a suitable en-
gagement between said rim and its lower
edge throughout the entire extent of said
lower edge, said engagement being provided Jo
for, preferably by a grooved lower portion
of the rim in which the lower edge of the
lense engages. The terminations of- each
lower edge of the lenses 9 are disposed
slightly above the longitudinal axis of the 65
rim in which it is mounted while the upper
edge-of each lens is formed of the horizontal
portions 10 and 11 extending a slight- dis-
tance inwardly from each side, while the
central portion of said lens presents a hori- 70
zontal edge 12 slightly below the horizontal
line of the portions 10 and 11, the said
lenses thus being provided at either end -
with upwardly projecting shoulders whose
inner sides preferably diverge outwardly 75
from'the line 12 to the edges 10'and 11. It
should be noted that-the edge 12 of the lenses
may be concaved if it is so desired. Pro-
jecting inwardly from corresponding points
at each end of the rims 5 are the prongs 1:380
and 14 which are shaped so as to conform
closely to the free edges of said upwardly
projecting shoulders and have the under side
of their horizontal portion grooved as at
15 to receive the horizontal portions 10 and 85
11 of the upper edge of the lens 9.
It is to be observed that the shoulder 7 is
composed of two members which are. secured
together'by a suitable set screw 16 which
passes through a tapped hole in the upper 90
section thereof and engages with the lower
section. The prongs .13 are integral with
the upper section of said shoulder and
when the lens 9 is placed within the rim the.
grip of the prongs 13 thereon can be regu- 95
lated by the tightening or loosening of said
set screw.
From the construction just described it .
will be obvious that the lens 9 will be se-
curely mounted in the rim 5 and by reason 100
of the depression of the upper edge thereof
the same will be removed from the line of
vision of the user when the eye is elevated
for the purpose of viewing distant objects.
In the construction shown in Figs. 2 and 105
3 the upper portion of the rim 5 is removed
while the lower portion is reinforced as at
17 so as to increase the firmness of the rim,
to prevent any lateral spreading of the same,
and to compensate for the removal of the 110
upper portion thereof. In all other respects
the structure disclosed in Figs. 2 and 3 is956,690.
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Donaldson, James W. Spectacles, patent, May 3, 1910; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512526/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.