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Патент USA US2135791

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Filed March 2?', 1936
SAMUEL E. BOUCHARD'
.
INVENTOR
ATTOR l-:Ys
2,135,79i
Patented Nov. 8, 1938
?UNITED STATES PATENT OFFICE
2,135,791
VOPHTHALMIC MOUNTING
Samuel E. Bouchard, Rochester, N. Y., assignor
to Bausch & Lomb Optical Company, Roches
ter, N. Y., a corporation of New York
Application March 27, 1936, Serial No. 71,203
4 Claims.
The present invention relates to ophthalmic
mountings and more particularly to mountings
which are attached to lenses to provide rimless
(Cl. 88-47)
material of a softening point sufficiently low that
the heat necessary for softening will be insuf
ficient to affect either the lens or the mounting.
spectacles.
Either a fusible non-metallic material or a me
One of the objects of this invention is to pro
vide an improved ophthalmic mounting. Anoth
er object is to provide an improved ophthalmic
mounting having a lug for engaging in a notch
in the edge of the lens. A further object is to
tallic alloy of low melting point can be used.
In order to avoid the necessity of the conven
tional shoe, the neck portion I3 is formed with
10 provide an ophthalmic mounting havinga lug
which lexactly ñts a notch in the edge of the
lens. Still another object is to provide an oph
thalmic mounting having a lug for engaging a
notch in the edge of the lens and an integral
15 mass of fusible material securing the mounting
to the lens and ñlling any spaces between the lug
and the notch.
a convex lug 22 which engages in a notch 23 in
the edge of the lens I6. In the ideal form, as
shown in Figs. 2 and 3, the lug 22 i'lts exactly
in the notch 23 and the fusible element 2€I serves
simply to secure the mounting to the lens. How
ever, this ideal is almost impossible to attain.
The more usual condition is that shown in Fig.
4 where the lug 22 does not exactly fit the notch
23. In this usual condition there will be a space
These and ,other objects and
between the lug 22 and the edge of the notch and
advantages reside in certain novel features of
construction, arrangement and combination of
20 parts as will hereinafter be more fully set forth
and pointed out in the appended claims.
this space would result in either a loose mount
ing or a strained lens. Such a diñiculty is cured
Referring to the drawing:
Fig. 1 is a fragmentary view of a rimless
mounting embodying this invention.
25
Fig. 2 is a horizontal section of same.
Fig. 3 is a vertical section of same showing an
ideal condition.
30
Fig. 4 is a vertical section similar to Fig. 3
showing the ordinary condition.
Fig. 5 is a plan view of a blank from which the
strap shown in Figs.v 1 to 4 is made.
Fig. 6 is a vertical section of a modification.
Fig. 7 is a plan View of a blank from which the
strap shown in Fig. 6 is made.
One embodiment of the present invention is
illustrated in Figs. 1 to 5 wherein IU indicates
generally a member having two spaced lens
straps II and I2 connected by a neck portion
I3. The strap Il is provided with an undercut
40 recess I4 and the strap I2 is provided with a
countersunk aperture I5 both of which are adapt
ed to register with an opening I'I adjacent the
edge of the lens I6. The straps II and I2 are
also'provided with grooves I8 and I9, respective
45 ly, vwhich extend from the recess -I4 to the neck
portion I3 and from the aperture I5 to the neck
35
-portion I3, respectively.
The mounting is placed on the lens I 6 with
the straps I I and I2 engaging the opposite sur
50 faces thereof and a fusible element 20 is intro
duced through the aperture I5 and softened so
that it fills the recess I4, opening I'I and grooves
I8 and I9 and the aperture is then closed with a
plug 2I which is embedded in the fusible ele
55 ment. This fusible element 20 is composed of
in the present invention by using the fusible re
taining element 20 and providing the grooves I8
and I9. When the fusible element 2€) is softened,
it will flow along the grooves I8 and I9 and ñll
any space between the lug 22 and notch 23 as
shown in Fig. 4, and thus insure an exact fit and 25
a tight mounting.
. In the modification shown in Figs. 6 and 7, a
groove 24 is formed in the surface of the lug 22
and the fusible material 20 »will flow along the
grooves I8 and I9 and i'lll the groove 24. Thus, 30
in this form, the fusible element 25J will always
extend between the lug 22 and the notch 23 to
insure an exact ñt.
From the foregoing it will be apparent that I
am able to attain the objects of my invention and 35
provide an ophthalmic mounting having a lug
exactly fitting a notch in the edge of the lens
in place of the conventional shoe. Various modi
ñcations can, of course, be made without depart
ing from the spirit of my invention or the scope 40
of the appended claims.
I claim:
1. An ophthalmic mounting comprising a pair
of projections positioned on the opposite faces
of a lens having an opening spaced from its edge,
anchoring means on each of said projections op
posite said opening, said projections being con
nected by a neck portion at the edge of the lens,
each of said projections having a groove extend
ing from the anchoring means to the neck por 50
tion, the' edge of the lens having a notch spaced
from the opening, said neck portion having a
part projecting into and partially filling said
notch and a fusible element secured to said an
choring means and having a part ñlling said 55
2,135,791y
opening and a part filling the remaining space in
the notch.
2. An ophthalmic mounting comprising a pair
of spaced straps positioned on the opposite faces
of a lens having an opening and a notch adjacent
said opening, anchoring means on said straps
opposite said opening, said straps being connect
ed by a neck portion having a part projecting
into said notch, said strap and part having a
groove extending between said anchoring means
and across said part, and a fusible element con
necting said anchoring means and substantially
ñlling said opening and said groove.
3. An ophthalmic mounting comprising a mem
ber having two spaced straps positioned respec
tively, on opposite sides of a lens having -an open
ing adjacent one edge and anotch in the edge
adjacent the opening, anchoring means on each
strap opposite the opening, means connecting
said straps beyond the edge of the lens, a lu'g
on said connecting means adapted to extend into
and partially ñll said notch, a groove in each
strap extending from said anchoring means to
said lug and an integral mass of fusible material
secured to said anchoring means, and extending
through said opening and along said grooves
and into said notch.
4. An
.
ophthalmic mounting comprising
a
member having two spaced straps positioned, re
spectively, on opposite sides of a lens having an
opening adjacent one edge and a notch in the 10
edge adjacent the opening, anchoring means
on each strap opposite the opening, means con
necting said straps beyond the edge of the lens,
a lug on said connecting means adapted to eX
tend into said notch, a groove in each strap ex
tending from said anchoring means to said lug,
a groove in said lug connecting the other two
grooves, and an integral mass of fusible material
connecting said anchoring means and extending
along said grooves.
SAMUEL E. BOUCHARD.
15
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