U.S. patent number 3,600,069 [Application Number 04/860,486] was granted by the patent office on 1971-08-17 for auxiliary clip-on spectacle.
This patent grant is currently assigned to Bachmann Bros., Inc.. Invention is credited to Albert G. McNeill.
United States Patent |
3,600,069 |
McNeill |
August 17, 1971 |
AUXILIARY CLIP-ON SPECTACLE
Abstract
A lens structure having a pair of lens parts and a connecting
bridge, and a resilient wire structure specifically configured for
conforming engagement about the bridge and hooked engagement over
primary spectacles.
Inventors: |
McNeill; Albert G. (Maple Glen,
PA) |
Assignee: |
Bachmann Bros., Inc.
(Philadelphia, PA)
|
Family
ID: |
25333331 |
Appl.
No.: |
04/860,486 |
Filed: |
September 24, 1969 |
Current U.S.
Class: |
351/47;
351/140 |
Current CPC
Class: |
G02C
9/04 (20130101) |
Current International
Class: |
G02C
9/04 (20060101); G02C 9/00 (20060101); G02c
009/04 () |
Field of
Search: |
;351/47,48,57,58,59,140
;2/14 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Schonberg; David
Assistant Examiner: Leonard; John W.
Claims
I claim:
1. An auxiliary clip-on spectacle comprising a lens structure
including a pair of side-by-side spaced lens parts, and a bridge
connecting adjacent upper regions of said lens parts, said bridge
having a generally vertically elongate cross-sectional
configuration providing upper and lower edges; and an adjustably
deformable resilient metal wire structure including a midportion
extending along the rear surface of said bridge generally
longitudinally thereof and in engagement therewith, a pair of bight
portions each extending from a respective end of said midportion
downwardly, forwardly and upwardly closely about the lower edge of
said bridge, a leg portion upstanding from each bight portion along
and in engagement with the forward surface of said bridge, a pair
of engaging members each extending from a respective leg over said
bridge onto the rear side of said lens structure for hooked
engagement over a spectacle front, a resilient plastic clip
including a face portion forwardly of said bridge overlying said
leg portions, a lower hook extending from said face portion in
hooked engagement about the lower edge of said bridge between said
bight portions, and an upper hook extending from said face portion
in hooked engagement about the upper edge of said bridge between
said engaging members, whereby said wire structure is effectively
maintained in position on said lens structure.
2. An auxiliary clip-on spectacle according to claim 1, said lower
hook being dimensioned to substantially completely occupy the space
between said midportion and said bight portions, to prevent
shifting of said bight portions longitudinally of said bridge and
prevent downward movement of said midportion.
3. An auxiliary clip-on spectacle according to claim 1, said
engaging members each including a resilient portion extending
obliquely downwardly and rearwardly from the upper end of a
respective leg on opposite sides of said upper hook and in
resilient retaining engagement with the upper edge of said bridge,
for retaining said legs closely adjacent to said bridge and held
against longitudinal movement along said bridge.
4. An auxiliary clip-on spectacle according to claim 1, in
combination with a land on said face portion in facing engagement
with said bridge and substantially completely occupying the space
between said leg portions, to effectively maintain the positions of
said legs upon flexure of said engaging members in normal use.
Description
BACKGROUND OF THE INVENTION
As is well known to those versed in the art, auxiliary clip-on
spectacles are quite commonly employed, say as sunglasses, and for
other purposes. Most commonly, such auxiliary clip-on spectacles
are fabricated of two separate lens parts, a wire formation
connecting the parts and providing spectacle engaging members, and
a plurality of fasteners, such as rivets or the like. This
conventional construction is subject to difficulties in assembly,
requiring relatively difficult and time-consuming hole forming
operations, alignment or registry of formed holes, and insertion
and deforming of fasteners, it being conventional to employ four
rivets. Further, the assembly and securement of the parts by the
use of rivets and similar fasteners provides locations of
concentrated stress, frequently resulting in breakage or other
damage.
SUMMARY OF THE INVENTION
It is, therefore, an important object of the present invention to
provide an auxiliary clip-on spectacle construction which overcomes
the above-mentioned difficulties, being fabricated of a
considerably less number of parts, eliminating the use of rivets
and like fastener elements, permitting of substantial economies
both in manufacture of parts and time in assembly, and resulting in
an auxiliary clip-on spectacle of enhanced appearance and
durability by the elimination of rivets and like fastener elements
and localized stresses produced thereby.
It is still another object of the present invention to provide an
auxiliary clip-on spectacle construction having the advantageous
characteristics mentioned in the preceding paragraph, which permits
the combination of an integral lens and bridge structure, while
utilizing a selectively adjustable wire construction for engagement
over the primary spectacles, which combination is extremely staunch
and durable to resist damage throughout a long useful life, and
which eliminates the need for riveting and other expensive
manufacturing operations, while providing an auxiliary spectacle of
enhanced neatness and attractive appearance.
Other objects of the present invention will become apparent upon
reading the following specification and referring to the
accompanying drawings, which form a material part of this
disclosure.
The invention accordingly consists in the features of construction,
combinations of elements, and arrangements of parts, which will be
exemplified in the construction hereinafter described and of which
the scope will be indicated by the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded perspective view showing an auxiliary clip-on
spectacle constructed in accordance with the teachings of the
present invention.
FIG. 2 is a rear elevational view showing the instant auxiliary
clip-on spectacle.
FIG. 3 is a transverse sectional elevational view taken generally
along the line 3-3 of FIG. 2.
FIG. 4 is a top plan view of the auxiliary spectacles of FIGS. 2
and 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now more particularly to the drawings, and specifically
to FIG. 1 thereof, the auxiliary spectacle of the present invention
is there illustrated as composed of three separate parts, a lens
structure 10, a wire engagement structure 11, and a clip 12.
More specifically, the lens structure 10 may include a pair of
side-by-side spaced lens parts 15, each adapted to cover a
respective lens of a primary spectacle. Interconnecting the lens
parts 15 is a bridge 16 extending between adjacent upper regions of
the lens parts. In particular, the lens parts 15 and bridge 16 may
be integrally formed of suitable transparent plastic, say by
molding or formation from sheet material, the overall lens
structure being of generally sheetlike form.
The lens parts 15 may be configured with suitable curvature, as
desired, and the bridge of connection 16 may be generally flat or
slightly forwardly convex, if desired. Further, the bridge 16 is,
as seen in section in FIG. 3, of vertically elongate
cross-sectional configuration. More specifically, the vertically
elongate cross-sectional configuration of the bridge 16 may be
generally rectangular, and provided with lower and upper bridge
edges 17 and 18. The lower edge 17 of bridge 16 may be formed by a
generally rectangular lower edge cutout 19 having side edge
surfaces 20. That is, the downwardly opening lower edge cutout 19
of bridge 16 is defined within the downwardly facing lower edge 17,
and generally parallel, laterally spaced inwardly facing side edges
20.
The wire structure 11 is fabricated of an integral length of
resilient, deformable wire bent to define a straight, generally
horizontally disposed midportion 22. Extending from opposite ends
of the midportion 22, the wire structure 11 is formed with a pair
of downwardly, forwardly and upwardly bent portions or bights 23.
Upstanding from the forward end of each bight 23, as an integral
extension thereof, is a generally vertical leg portion 24; and, a
resilient snap or connection portion 25 extends obliquely
rearwardly and downwardly from the upper end of each leg portion
24. Connected to each connection portion 25, say extending
integrally from the rearward end thereof, is a generally
hook-shaped engagement member 26.
In the assembled condition, as best seen in FIGS. 2--4, the wire
midportion 22 extends horizontally and longitudinally along the
rearward surface of the bridge 16, adjacent to and spaced above the
lower cutout edge 17. The bights 23 each extend downwardly and
forwardly closely about and embracing the lower bridge edge 17,
respectively adjacent to vertical bridge edges 20. From this
embracing engagement of each bight 23 with lower edge 17, adjacent
to respective side edges 20, the leg portions 24 upstand vertically
closely along the forward surface of the bridge 16. Each connection
portion 25 extends rearwardly and downwardly over the adjacent
portion of upper bridge edge 18, in resilient bearing engagement
therewith, for location of the engagement or hooked members 26
generally on the rearside of respective lens parts 15.
From the foregoing description of wire structure 11, it will be
readily appreciated that the wire structure may be quickly
assembled with the lens structure 10 by mere downward engagement of
bridge 16 into the bights 23, and forward swinging movement of the
bridge for snap engagement of the upper bridge edge 18 beneath the
connection portions 25 of the wire structure.
The clip 12 may be integrally fabricated, say by molding of
resilient plastic material, and may include a generally flat,
substantially rectangular face portion 30 having on its rear or
inner surface a land or boss 31 which may be vertically coextensive
with the face portion and terminate laterally short of the side
edges of the face portion. Thus, the face portion 30 and rearward
land 31 may combine to define of the lateral extremities of the
face portion a pair of outstanding flanges 32. Projecting
rearwardly from a lower laterally medial region of the face portion
20, the clip 12 is provided with a resilient, upwardly facing lower
hook 33. Similarly, extending rearwardly from an upper, laterally
medial region of the face portion 20, there is provided a
downwardly facing resilient hook 34. The lower and upper resilient
hooks 33 and 34 may be laterally coextensive with the land 31; and,
the entire clip 12 may be integrally formed, as by molding, of
suitable resilient plastic material.
In the assembled condition of FIGS. 2--4, the clip 12 is located
forwardly of the bridge 16, with the rearward boss or land 31
interposed between the wire leg portions 24 and in facing
engagement with the forward surface of the bridge. The lower hook
33 is snugly engaged about the lower edge 17 of bridge 16, being
interposed between the wire bights 23 and extending upwardly to
terminate on the rearward side of the bridge proximate to the wire
midportion 22.
The downwardly facing upper hook 34 is engaged over the upper
bridge edge 18, being interposed between the connection wire
portions 25, and depending on the rear side of the bridge. In
practice, the clip 12 may be resiliently deflected to effect snap
engagement of its hooks 33 and 34 about respective lower and upper
bridge edges 17 and 18. In this condition, it will be apparent that
the lateral marginal portions 32 or flanges of the face portion 30
overlie respective wire leg portions 24, and positively retain the
latter in their adjacent relation with the bridge 16, while
permitting of flexure of the wire hook portions 26 as required for
engagement over a spectacle front.
From the foregoing, it is seen that the present invention provides
an auxiliary clip-on spectacle which is extremely simple in
construction, adapted to effect substantial economies both in
manufacture and assembly, which is staunch and durable for a long
useful life, and otherwise fully accomplishes its intended
objects.
Although the present invention has been described in some detail by
way of illustration and example for purposes of clarity of
understanding, it is understood that certain changes and
modifications may be made within the spirit of the invention.
* * * * *