close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2106283

код для вставки
Jan. 25, 1938.
2,106,283
E. M. SPLAINE
OPHTHALMIC MOUNT'ING
Filed Jan. 10, 1936
FIZZ I
'44
H5217 F1517!
INVENTO‘R
50/490 M \S'PLAINE
Patented Jan.
2,106,283 [
v193.8
-. UNITED ‘STATES PATENT OFFICE
'omnmmc ‘ MOUNTING
» Edward M. L‘Splaine; Southbridge,
assignor
tiiT'Am'crican Optical Company, Southbrldge,
Miss}; a voluntary .association of Massachu
Seth.
'
_
.
1 Application January 10, 1936, Serial No. 15am
- -"
In em 0mm 18, 1935
12 0mm; ' (or. 88-47)
This application is a continuation in part 0
Another object is ‘to provide lens holding means
having a part de?nitely shaped to produce a pleas
ing stream-line effect horizontally of the lens in
combination with edge engaging means for resil
iently maintaining the said part in desired aligned 5
my copending application Serial No; 344,917 ?led
relation with the lens'in instances wherein the '
September 21, 1934.
edge of the lens at'the location of'attachment
of the holding means lies at an angle other than
This invention relates to improvements in oph
thalmic mountings and has particular reference
to improved lens holding ‘means and method of
‘making the same.
'
‘
"
-
_ ‘
One of the principal objects‘ot the invention
is to provide an improved lens holding means that
normal relative to the horizontal meridian of the
lens and which will resiliently permit movement
of the holding means both upwardly and down;
will resiliently ease off the rigidity in the connec
tion 01' the holding meansto ~the lens, that will
insure the said holding means returning to' its
wardly with respect to itspoint of attachment
initial aligned position after such easing off, that
to the lens to absorb shocks and'straindn either
will provide means for controlling the tension of
the resilient means during use, that will maintain
the connection of the holding means to the lens
direction.
'
'
I
_
-
'
'
,
Another object is to provide a relatively narrow
attachment for the resilient means tov the lens
holding means in the direction of the edge of the
?rm and substantially rigid to prevent looseness
and play during the use of the mounting and yet _ lens whereby the conventional rigid backing shoes
usual in prior art structures of this nature are
eliminated and‘thejnormal pivotal action of the 20
be oi‘ such a nature as to relieve shocks and strain
on the lenses when the'gl'asses are'dropped or
roughly handled and that will eliminate the ex
lens holding means on the lens will be greatly
increased.
' Another object is to provide the backing for the
actness and accurateness in the ?tting of the
parts tobe connected usually required in mounte
ings of this character in the past. . '
' resilient means on the lens holding means with
.
Another object of the invention is to provide
resilient‘ means of the above character having a
plurality of overlying sections, each of which
forms a resilient backing support for the adja
cent section, and each of which may be of equal
or varied resiliency, as desired.
'
Another object is to provide novel means and
method of forming the resilient means and of
attaching said resilient means to the lens holding
means whereby the opposite ends of the resilient
means will exert forceson the lens holding means
relatively straight transversely extendingupper 25
and lower edge portions whereby the said edge,
portions will have a line contact with said re‘-v
silient means when they are ?exed.
_
Another object is to provide the resilient means
with relatively straight transversely extending 30
end portions whereby the said resilient means will
have line contact with each other and with the
lens at their respective ends.
-
Another object is to provide novel means func
tioning separately of the lens face engaging por
acting substantially in equilibrium about the con- . tions of the lens holding means for attaching the
resilient means to said lens holding means and ‘
nection of the lens holding means to the lens.
_ Another object is to provide lens holding means
’ of the above character so constructed that the
for preventing twisting of said resilient means
sidewise relative to said; lens holding means dill‘?
tension of the resilient means may be varied as
ing use.
desired.
Another object is to provide the resilient means
nearest the'lens with cylindrical shapedv end con
_
‘
'
Another object is to provide lens holding means
of the above character having a relatively rigid
portion and a relatively resilient lens edge engag
.',ing portion, said resilient portion being formed
of a plurality of overlying sections of the same
resiliency or of varied resiliencies, as desired, and
I
‘
40
tacts with the edge of the lens whereby'a sub
stantial line contact transversely of said edge will
exist at different positions of ?exing of the resil
ient means,
‘
'
'
4
Another object is to provide novel means‘ and
being adapted to urge the relatively rigid portion ', method of making lens holding means of the "
e
into engagement with the periphery of the lens above character.‘
Other objects and advantages of the invention 50
to maintain the parts in desired aligned'relation
‘with said lens, said rigid portion being adapted‘, will become apparent from the following de
' .to provide means for varying the tension of the scription taken in ‘connection with the accom
resilient'means and also adapted to control the ‘ panying drawing, and it will be understood that
position of alignment of the lens holding'means
55 with the lens when the parts are connected. .‘ ‘
I
many changes may be made in the arrangement ' I
of parts, details of construction and methods 55
8,106,288
strain absorbing means whose forces at its points
of contact with the edge of the lens will act sub
stantially in ‘equilibrium on opposite sides of the
means for connecting'_ the lens holding means to
shown and described without departing from the
spirit of the invention as set forth in the accom
panying claims. I, therefore, do not wish to be
limited to’ the exact arrangement of parts, details
of construction and methods shown and described
the
as the preferred forms only have been shown‘ by I
way ofillustration.
lens.
,
.
=
,
'
,
'
Another object of the invention is to provide
means ‘and method of reinforcing the resilient
means to produce a more permanent and dura
ble construction and of so forming and connect
ing theresilient means that they will not vmove 10
-
Referring to the drawing:
Fig. I is a fragmentary front elevation of an
10 ophthalmic‘ mounting embodying the invention »
and showing high position straps or lens holding I out of aligned relation with each other during
means;
_
use.
.
.
.
.
I’
'
‘
,
,A further object is to providea freer and wider
high position strap shown-partially in section;
range of ?exing than has' been usual in the
Fig. III is a perspective view of a modi?ed form past in devices of- this character.
15
Referring more particularly to the drawing
of the invention;
‘
‘
‘
,
Fig. IV is a sectional view of the lens strap ‘ wherein like characters of reference designate
like parts throughout the several views, the im
shown in Fig. 111;
,
~
proved holding means or strap I embodying the
> Fig. V is a fragmentary face view of the con
necting means for uniting the spring sections invention, as shown by one portion of Fig; I and 20
with "the main body portion of the lens straps in Fig. 11, comprises a portion, 2, which when
viewed from the front is relatively straight, and .
shown in the various ?gures of‘ the drawing;
Fig. VI is a sectional view takenon line has a temple connection 3 adjacent one end
thereof and a bifurcated portion 4: adjacent its
vr---vr of Fig. v;
Fig.‘V'.II 'is a view similar to Fig. 11 showing opposite end. The bifurcations of the portion 4 25
another modi?ed form of high' position strap or are adapted to engage with the front and rear'
Fig. vII is a fragmentary enlarged view of’the ' ‘
15
20,
'
25
lens holding means;
30
'
Fig. VIII is a view similar to Fig. VII showing
another modi?ed form of the invention; and
Fig. Ix is an enlarged sectional view taken on
» ‘line IX—IX of Fig. VIII.
-
Much di?iculty has been encountered inth
past in ?tting and securing the lens straps or
holding- means of 'riml'ess type ophthalmic
36 mountings to the lenses and in preventing the
said straps or holding means becoming loose
and wabbly during use, ‘particularly when the
lens straps or holding means were removed from
the geometrical center line to a high position
40 on the lens as shown in the present invention.
Oneof the dimcuities has been that of maintain
ing the parts in proper aligned and ?tted rela
' surfaces‘ of the lens 5 and are provided with
openings aligned with an opening in the lens a
through which attaching means ‘I, such as a
screw or other suitable means known to the art; 30 1
is extended.
The lens holding means I‘ is provided at'th'e
base of the bifurcation with an edge engaging
member 6 which is normally rigid but ‘of an
adjustable nature. This lens edge engaging 35
member, as shown in Fig. 11, extends outwardly '
of the lens holding means at one side, preferably
the lower side, and is so formed that it extends >
transversely to the longitudinal axis of the rela
tively straight portion 2 and lies at an angle
thereto other than normal so as to ?t the angle
.40
of the upper edge of the lens at the point of
attachment of the holding means.
The portion 2, at the base of the bifurcated
member, is recessed, as shown at 8, to receive 45
the sections H and I2, of the resilient lens edge
engaging means 9. The resilient means 8, as
shown
in Figures I and II, comprises three sec
use. This was due primarily to the unsym
metrical nature of the contour of the lens at . tions II, I2, and I3 and each section is provided
the high position. Means have been provided. in with an opening through which securing means 50
ID on the base of the bifurcation extends. The
the past, for resiliently taking‘ up the 'looseness securing
means is headed over to secure the said .
and play in lens holding means of this charac
sections in superimposed relation with each other
ter but such means, in most instances, provided ' and to'attach them to the base. The detail of
resiliency only in one‘ direction of movement of construction of the securing‘means I0 will be set
the lens holding means on the lens and due to
forth in detail hereinafter. These various‘ sec
the restricted size of such devices were not suf?
tions are of different lengths and may be of
cientiy durable to produce the most desirable varied resiliency with the longest section II more
tion with each other and of ?tting the parts
so that when the attaching means is placed in
the alignedopenings formed in the straps and
lens no strain will be imparted to the lens with
a danger of causing it to become broken during
structure, that is, the resiliency of- the resilient . resilient than section II and the said section I2
means would soon‘ play out and permit the parts more resilient than the shorter section H. Al
to loosen and move out of aligned relation with , though I have shown and described only, three
each other during use or when the lens holding sections of varying lengths and varying degrees of
means were properly ?tted on the lens they
were more or less restricted in their ‘movement,
that is, the lens holding means were not of.a
free acting nature.
7
It, therefore, is one of the primary objects of
this invention to provide resilient means for de
vices of this character which will take up the
70 looseness or? play in the connecting means to
the lens, which will more or lesszpermanently
- maintain varshock absorbing cushion ‘connection
with ‘the lens and resiliently hold theparts: in,
resiliency, it is to be understood that the number
of said sections may be varied, that is,-increased
or ‘decreased, and that thesaid sections may be
made of material having substantially the same
degree of resiliency if desired. The function ‘of _,
the resilient means 9 is'similar to that of a leafspring wherein a resilient section forms a back»
ing support for another adjacent sectionf ,- Atten-~
70''
tion is directed to the fact thatthe. sections III ;
and I2, attached in the recess 8 by the connecting >_
means ID, are held by the side walls of said recess
desired ‘aligned relation with1 each other and, ' against movement sidewise,»and .are thereby pre- ‘
76 which will provide free acting resilient shock and
05'
ventedfrom twisting out of aligned relaTtion with
-
. each other during use.
2,10
6,283
The section l3 may also
be placed in the‘ recess 8 if desired. The inner
walls of the bifurcated portion I also in some in
stances aid in preventing movement of the sec
tions sidewise during use. The connecting means
I which holds the lens holding means I in secured
relation with the lens 5 is ?tted during the as
sembling of the parts so as to have a predeter
mined amount of looseness and play to permit the
10 said. holding means to move about the said con
necting means as a center during use. This
or other suitable means to an opening in the body
portion Id of the lens strap, and having projec
tions ll adjacent its opposite end which during
the assembling of the superimposed resilient sec
tions are adapted to be pressed to lie ‘within $1
beveled transverse edges l8 formed in the resilient
section l3.. During the pressing operation the
pin ,m‘ember I0 is compressed, forcing the body ,
portion of the pin into rigid engagement with the
side walls of the openings in the superimposed 10
sections ll, 12 and. I3, rigidly securing them to
looseness and play, however, is such as to prevent the body portion l6 of the lens strap and elimi
movement of the lens holding means in a plane nating all looseness and play in the connection.
' normal to the plane of 'the ‘lens, that is, the
movement of the holding means about the pivot ‘l
in this instance is entirely in the direction of the
plane of the lens. It is apparent that by adjust
ment of the member 6 outwardly or inwardly rela
tiveto the peripheral edge of the lens, the ten
20 sion of the resilient means 9 may be varied and
The purpose of providing a rectangular shaped
pin, the greater width of which extends in the
direction of . the longitudinal axisvof the super
imposed sections, is to provide means whereby
the width of the portions IS on the opposite sides
of the connecting pin 10 will not be so reduced as
to cause them to be weakened to a degree where 20
the position of the lens holding means relative in they will notprovide a positive and permanent
to the lens may be varied, that is, the longitudinal connection and permit the various resilient sec-.
axis of the portion 2 may be varied with respect tions to function properly. That is, the rectan
to the horizontal meridian of the lens so that the gular shape of the pin Ill permits forming these
said portion may be placed in parallel or other . sections to a greater width than has been usual
desired relation with the horizontal meridian in the past. This also provides a longer bearing
of the lens to produce a pleasing streamline effect surface and thereby prevents displacement of
transversely of said lens. The resilient means 9 the alignment. The portions pressed into enprovides means for taking up the looseness and gagement with the .beveledend walls l8 provide '
30 play in the connection of the lens holding means
means for anchoring the resilient means in the 30'
to the lens and also provides free acting and I direction‘ of ?exing and thereby provide'a posi
durable means for absorbing shocks and strain tive and durable attachment.
on the lens during the use of the mounting.
This method of attaching the resilient means I
This arrangement obviates the necessity of hav , to the base of the lens holding means enables
ing to closely associate and ?t the partswith
the spaced lens face engaging portions to be ad
each other prior to placing the connecting means
‘I in the aligned openings, and thereby greatly
decreases the dimculties usually encountered inv
justed to any desired spaced relation with each
otherindependently of the resilient means. This
the past, in ?tting and assembling holding means
40 of this nature with the lenses.
enables the said holding means to be ?tted to
having the resilient sections move out of align?"
The upper edge I 4 of the base of the bifurcation ment with .each other as would be the case if a
and the free ends of the resilient sections ll, l2 » round pin were used and the inner walls of the
and I3 are preferably formed relatively straight spaced face engaging portions were depended
transversely‘thereof so as to provide substanti
upon to hold the resilient sections in ‘alignment.
ally line contact with each other and with the It is quite obvious that with the latter structure,
edge of the lens when the lens holding means is if the space between the lens face engaging por
moved about the lens connecting means ‘I. This tions were increased, as happens when the lens
arrangement is of particular importance when holding means is ‘fitted toa thick lens, the inner
the lens holding means is attached to the lens walls of said ‘face engaging portions would move
adjacent the upper edge thereof because at this away from the side edges of the resilient means
location due to the curvature of the lens, the with a result that the said resilient means would
pivotal axis of the lens. connecting means is not twist out of alignmentduring use. The strucé
exactly perpendicular to the edge of the lens and ture shown in Figures -V and VI completely elimi
the plane of pivotal movement of the lens hold 'nates this di?iculty.
cl Cl ing means on the lens and the springs, is inclined
Referring more particularly to Figures III and
slightly to the portion of the edge of the lens IV, there is shown a modi?ed form of the inven
against which the springs‘ rest. This slight incli~ tion wherein a high position strap, such as that
nation, when the} lens holding means is moved shown in Fig. II, is so constructed as to ?ex down
about its pivotal connection 1 to the lens has a ' wardly as well as upwardly in the plane of the
60 tendency to cause the superimposed resilient sec
lens during use. This is ‘accomplished by pro
tions to work about their connection to the lens . viding the lens holding means with an upwardly
holding means. If the said resilient sections are extending support 20 to which the resilient edge
provided with line contact with each other at engaging means 2| is attached by a headed rec
their ends and the edge of the bifurcated member, tangular pin member 22. This pin is ‘similar to
as set forth above, the tendency of the said resili
the pin l0 referred to above. Attention is di
ent sections to twist about the connection to the rected to the fact that the point of attachment of
lens holding means and of becoming loosened at the resilient means 34 is in this instance on a
said connection would be eliminated.
line 23 which is substantially normal to a line
In Figs. V and VI .there is ‘shown an enlarged ‘
70 fragmentary view of the connecting or securing
means H) which extends through the aligned
openings in the superimposed resilient sections ll,
l2, and I3. The connecting means I0 is in the
form of a rectangular pin having a reduced por
75 tion 15 adjacent one end thereof secured by solder
'
lenses of varying thicknesses without danger of;
40
45
_
50
*
60
, .
65
tangent with the edge of the lens at the location 4
of the holding means on the lens ‘and which ex‘ 70
tends substantially through the axis of the pin
22 and point of attachment of the connecting, ‘ _
means 24 to the lens. This provides the resilient
means 2| with substantially equal edge bearing
surface on the opposite sides of the point of at
2.106.383
tachment 24 so that when the lens holding means .
is moved about ‘said point of ' attachment asja
center the resilient means 2! will function sub
. stantially‘ equally on both sides of said point.
The lens holding means in this instance is ‘pro
vided with a temple supporting portion or‘ arm
25 similar .to the previously described portion i6
and which lies substantially parallel ‘with the
10
horizontal meridian of the lens~ to produce a
pleasing streamline effect across the lens. The
resilient means in this instance’comprises three
superimposed sections 26, 21 and 28 of varying
lengths having relatively straight transverse end‘
portions 29 providing substantial line contact
with each other substantially throughout] the
full width thereof when ?exed. The upwardly
extending support 20 also has a substantially
straight transverse end 30 providing line con
tact substantially throughout the width of the
adjacent resilient section when the resilient
means is ?exed towards said‘ support.
As pre
viously set forth, this line contact provides wide
bearing surface with- the rear of the respective
resilient sections and prevents their twisting side
wise on the pin member 22 and moving out of
aligned stacked relation with each other during
use. It will benoted that thepin 22is offset to one
side of the longitudinal axis 3i of the temple sup
port 25 and .the center of the connecting means
30 24'is offset to the other side of the longitudinal
axis 3|. The support 20 has an attaching face
32 lying at an angle to the longitudinal axis 3|
and substantially tangent to but removed from‘
tions 35 and 36 so as to substantially.eqllalize-the.
lens edge engaging 'pressur on thecppqsite sidesof, the point: of attachmen
oi-ihalensstran
to the lens.
._.~ '_
I‘.
.
¢..._.,.-“._.-_;\
1 Attention is directed to" thehfactthattinrthis
instance ‘the attaching means.34..forsecuring-vthe 5..
various sections '35, .36 and 3"! )to. vthe lens holding’.
means is’ not positioned oma2 line ‘substantially
normal to a line gangent withlthesedgew
the
lens'at the locatio .of the holding K168115391} .the
lens, and which extends. substantially through; 19.
the axis of the point of attachment of the .c
A
necting means 39‘to‘the lens,“ but’rthe, related‘
sitions, resiliency and dimensions of the super:
imposed sectionsl35; 36 and 31 are suchdas to‘
provide substantially‘ equal resiliency. on the op;
posite sides of the point ofattachment 39. The
alignment of the holding means on the lens may
be varied by the proper adjustment of the springv
section 38. If desired, however, the point of at 20
tachment 34 could be positioned on a line normal
to a line tangent with the edge of the lens and
extending through the point‘ of attachment ~39 if
desired. This could be accomplished by increas
ing the lowering of the point of attachment 39.
relative to the longitudinal axis of the temple
support 40 the-proper amount.
}
.
‘
The spring sections 35 and 36 may be of‘equal
resilience or may be varied in resilience. as de-‘
sired, that is, the section ‘36 may be‘ made more
rigid than the section 35 in a manner similar to
that shown and described in connection with the
above ?gures of the. drawing. or. the sections
the edge of the lens. The feature of this con
may be of material having the same resiliency
struction resides in the fact that the resilient formed to diiferent lengths to render them dif
means 2! contacts the edge of'the lens at two ‘ ferent in resilient reaction. This is due to dif
spaced points, one on each side of the pin 22 ferent lever actions which cause the spring sec
and the lens connecting means 24 and is adapted
to exert forces on the supporting arm 25 acting
substantially in equilibrium about the connecting
means 24 when the supporting arm is in its nor-‘
mal horizontal position. The face 32 is cut away
at 33 to provide clearance whereby the lower
resilient portions will be free to ?ex rearwardly
throughout the major portion of their lengths
during use.
It will be noted that the distances between
the ends 29 of the various resilient sections and
from the edge 30 to the end 29 of the section 26
are substantially the same. ' This is to provide
staggered line contact supporting ends or edges
at equally spaced intervals intermediate the ends
of the resilient section 28 which during the ?ex
ing of said section will be successively brought
into action to stabilize the ?exing of said section
throughout its length. The sections 26 and. 21
‘ resiliently ease off the ?exing of the section 28
and increase its tendency to return to its initial
set after such easing off. This function takes
tions to react differently, the shorter sections
being more rigid in their action than the' longer
sections, etc.
_
Attention is directed to the fact that there is
40
a clearance provided in the rear of the lower re
silient means as indicated at 4|, to provide means
whereby the lower portion may be free to ?ex
towards oraway from the edge of the lens.
It will be noted that the ends 42 of the spring
section 35 are ?attened or shaped to have sub
stantially intimate contact with the edge of the
lens throughout the length of said end portions
substantially as shown. This is for the purpose
of distributing the pressure of the ends of the
spring on the lens throughout an increased area
rather than have it concentrated on single spots
whenxthe lens holding means is moved on its '.
pivot connection with the lens. This producesa
surface contact between the'edge of the lens and '
ends of the spring and greatly relieves the strain
which might'be introduced at these locations.
In Fig. VIII there is shown another modi?ed
00 place in either direction of ?exing about the form of the invention wherein the ends 43 of the
60
pivot 24.
'
spring 44 are curved to provide substantially cy
In Fig. VII there is shown another modi?ed lindrical shaped contact surfaces with the edge
form of high position strap similar to that shown of the lens. This provides curved engaging sur-,
- in Fig. III, only in this instance instead of ex . faces instead of relatively sharp contacting edges
tending all of the superimposed spring sections at the ends of-the spring but it is to be noted
both upwardly and downwardly similar amounts
that ‘relatively straight contact of the spring
on opposite sides of the attaching means 34, the
sections 35 and 36 extend upwardly only of the
point of attachment 34. In this instance the
ends with the edge of the lens is still provided.
The curved ends may also be formed on the
spring sections 45 and 46 if desired. This'ar
rangenient as well as the intimate contact of 70
the ends of the spring with the edge of the lens
may be used in all of the di?‘erent structures
shown in the drawing.
It will be noted that the face of the support
46 is angled rearwardly, as indicated at 46, on 75
normally relatively short resilient backing mem
ber or section 31 is provided with an elongated
downwardly extending spring portion 38 forming
the lower lens edge engaging means.- The spring
portion 36 is preferably of a .tension substan
.75 tially equal to the combined tension of the sec
$10088
the opposite sides of the attaching pin 50 to pro
vide more clearance for the ?exing of the spring
resilient connection'with the lens during use. In
all instances the conventional rigid backing sup
- sections rearwardly during use. In this instance
ports or edge strap portions of the prior art struc-'
the spri g section 46 is preferably curved lon
gitudina and cupped transversely, as indicated
tures have been eliminated and have been re-,
placed by the resilient backing members. ‘This
in Fig. IX, to increase the initial rigidity thereof
prior to attaching the springs to the support 48.
tical and balanced means for absorbing strains
The object of this arrangement‘ is to provide
and shocks in directions both upwardlyland" -
provides a wider range of ?exing and moreprac- .
downwardly relative to the plane of the lenses.
From the foregoing description it will be seen
desired ‘curved shape during the compressing of that I have provided simple, emcient and eco
j the ends of the pin 50, corresponding to the ends nomical means and methods of obtaining all of
I‘! in Fig. VI, into engagement with the spring the objects and advantages of the invention.
section 44 to secure themlto the support 48; If
Having described my invention, I claim:
15 the spring section 46 is not cupped, as stated
1. A device of the character described for at 15
above, the various spring sections have a tend-I tachment to'a lens at a point removed from the
ency to straighten when the ends of the pin 50 horizontal geometrical‘ center line of the lens,
are pressed rearwardly to secure the said spring said attachment having a supporting arm the
sections to the support. vThis cupping therefore longitudinal axis of which is adapted to be main‘
20 provides sufficient resistance during the assem
tained in a substantially horizontal plane when 20
means in the rear of the spring sections 46 and
10 45 for preventing their straightening from their
bling operation to prevent this straightening of
the spring and yet provides a resilient backing
to the lens at a point removed to one side of the
- for the section 85 during use.
In the structure shown in Fig. IV, the face 32
of the support 20 is cupped or curved to the ap
proximate curvature of the spring sections 26, 21
and 28 and thereby obviates any tendency of the
said sections to straighten when the projections
on the pin member 22,’ corresponding to the pro
30 jections I] of Fig. VI, are forced into engagement
with the section 28 to attach and hold the various
sections in aligned relation with each other on
the support 20. The face 32, as well as all of the
corresponding attaching faces of the various con
35 structions shown in the drawing, is relatively
narrow inthe direction of the edge of the lens
and is so positioned relative to the edge of the
lens that the normal pivotal movement of the lens
holding means on the lens is greatly increased
40 and the ?exing action of the resilient means is
also greatly increased. This arrangement, there
fore, greatly increases the shock and strain ab
sorbing characteristics of lens holding means of
'
in its position of normal use on the lens and a
lens engaging element adapted to be connected
this nature.
It is to be understood that either of the above
methods of preventing straightening of the re
silient sections during the securing thereof to
their supporting means may be used in any of the
' constructions shown. In- the construction shown
50 in Fig. IV, wherein the face 32 is cupped it will
be noted that the width of the face in the direc
tion of the edge ofvthe lens is'slightly greater
than the width of the head of the pin in said di
rection so that when pressure is applied to said
head the resilient means will be compressed in
termediate the upper and lower edges of the face
longitudinal axisof the supporting‘ arm, a por
tion adjacent one of the ends of the supporting
arm adapted to overlie the edgeof the lens and
formed with a relatively short attaching face
for resilient means, said attaching face lying at
an angle other than normal relative to the-lon
gitudinal axis of said supporting arm," and re
silient means secured intermediate the ends
thereof to said attaching facefor contacting the
edge of the lens at two spaced points, one on each
side of the point of ‘attachment of said resilient
meanswith said attaching face and on opposite 35
sides of the longitudinalaxis of the supporting '
am, said point of. attachment lying on a line
substantially normal to the plane of the attach
ing face and at an acute angle to the longitud
inal‘ axis of said supporting arm and extending 40
through the point of connection of the lens en
gaging element to the lens, whereby the portions
of the resilient means on the opposite sides of -
the point of attachment will exert forces on said
supporting arm acting substantially in equilib
rlum about the connection to the lens when the
supporting arm is in its normal horizontal po
sition.
"
45'
,
2. In a device of the character described for
attachment to a lens at a point removed from the
horizontal geometrical center line of the lens,
said‘attachme'nt having a supporting arm the
longitudinal axis of which is adapted to be main
tained in a substantially horizontal plane when
it is in its position of normal use and a lens en
gaging element adapted to be pivotally' connected
32. The said upper and lower edges being sub
the lens at a point removed to one side of the
stantially straight ‘transversely of the resilient to
longitudinal
axis of the supporting arm, an o?set
means will have a tendency to cause the various
portion extending from adjacent one end of said
sections to cup rather than to straighten.
Although the connecting pin shown in- Figures arm on one side only and at an angle other than
V and V1 is described as being used in connection normal relative to the longitudinal axis of the
'with the lens holding means, illustrated in Fig. ' arm and having a face adapted to lie substan
11, it may be applied to any of the structures dis . tially parallel with a line tangent with the edge
closed‘ herein.
'
In all of the above described structures it is
of the lens at said location when said arm is in a
horizontal position of usenand resilient means for
apparent that resilient means incorporating a contacting the edge of said lens at two spaced
plurality of sections forming resilient backing ' points and connected ;to the face of said offset
supports for each other and which may be regu-'
70 lated as to their tension by controlling their
lengths and thicknesses have been provided.
This type of resilient means overcomes most of
a the difficulties encountered in prior art lens hold
'ing devices of this nature in that it is more
75 durable and maintains a snug and permanently
portion at a point removed from the longitudinal
axis and at- such a location as to exert forces on
said supporting arm acting substantially in equi 70
librium about the pivotal connection-to the lens,
said. face being cut away adjacent the lower por
tion thereof to lie in a plane further removed
from the edge of the lens to provide clearance
-
v
1
' 6
I
2,106,888
for the ?exing of the lower portion of the re- _ points substantially equidistant from a line ex
silient means during use.
tending through the point of attachment of the
3. A device of the character described for at~ _ resilient means to said face and the pivotal con
tachment to a lens at a point removed from the nection to the~lens to exert forces on said por
horizontal geometrical center line of the lens,
said attachment having a supporting arm the ion
gitudinal axis of which is adapted to be main
tion overlying the edge of the lens acting sub-'
stantially in equilibrium about the connection to
the lens when the parts are in their normal po
tained in a substantially horizontal plane when
sition of use.
_ in its position- ‘of normal use on the lens and a
10 lens engaging element adapted to be connected
to the lens at a point removed to ohe'side of the
longitudinal axis of the supporting arm, a por
15
_
.
6.|A device of the character described for at
tachment to a lens at a point removed from the
horizontal geometrical center line of the lens,
said attachment having a- supporting arm the
tion adjacent one of the ends of the supporting longitudinal axis of which is adapted to, be main
arm lying at an angleother than normal rela- ' tained in ‘a substantially horizontal plane when
tive to the longitudinal axis of the supporting r in its position of normal use on the lens and a lens 15
engaging element adapted to be pivotally con
arm and adapted to overlie the edge of the lens
and provide an attaching face for resilient means
nected to the lens at a point below the longitudi
and a plurality of superimposed resilient members ~ nal axis of the supporting arm, a portion ad
vof varying lengths secured to said attaching face ' jacent one of the ends of the supportingzarm
adapted to overlie the edge of the lens and re 20
of said resilient members adapted to contact the silient ‘means having a' portion attached to said
edge of the lens at two spaced points on opposite overlying portion above the longitudinal axis of
sides of the point of attachment of- said resilient the supporting arm and portionsadjacent its ends
means with said attaching face and on the op
for contacting the edgeof the lens at two spaced
25 posite sides of the longitudinal axis of the sup
points substantially -, equidistant from' the point 25
porting arm, said point of attachment lying on of attachment of said resilient means with said
20 by a single attaching member with at least one
aline substantially normal to the plane of the
overlying portion and extending outwardly of the
attaching face and at an acute angle to the lon
gitudinal axis of said supporting arm and ex~
opposite sides of a horizontal line extending
thro'ughthe pivotal connection to the-lens when
the attachment is on the lens, the,portio'ns of the
30 tending through the point of connection of the
lens engaging element to the lens, whereby the
resilient means on the opposite sides of said "_ _
portions of said resilient means on the opposite
point of engagement being balanced to‘ exert
sides of said point of attachment will exert forces
forces on- said supporting arm acting substantial
on said supporting arm acting substantially in
ly in equilibrium about the pivotal connection to
the lens‘when the supporting arm is in its normal 35
35 equilibrium about the connection to the lens when
the supporting arm is in its normal horizontal
position.
,
-
4. A device of the character described for at
tachment to a lens comprising a member hav
40 ing an attaching portion for engaging the face
of the lens and means for overlying the edge of
the lens and extending outwardly of the opposite
sides of said‘ member for engaging the face of
the lens, one of said means extending outwardly
of the opposite sides of said face engaging mem
ber comprising a plurality of superimposed re
silient members and. the other a single resilient
member, said single resilient member . being
formed to a resiliency substantially equivalent to
50 the combined resiliency of the plurality of re
silient members.
'
5. A device of the character described for at-_
tachment to a lens at a point removed from the
position'of use.
-
\
,
.
'
'7. A device of the character described for at
tachment to a lens at‘a point removed from the
horizontal geometrical center line of the lens,
said attachment having a portion adapted to over
40
lie a face of the lens and be pivotally connected to ,
said lens and a portion adapted to overlie the
edge of the lens with the major .portion thereof
lying above a horizontal line extending through
the pivotal connection to the lens, said edge por 45
tion having an attaching face on the side there
of adapted to lie towards the lens which is'rela
tively short in a direction which is to follow the
edge of the lens and which lies at'an angle other‘
than normal relative to the horizontal center line
of the lens when the attachment is on said lens,
and resilient means secured to said face and hav
ing portions adapted to extend outwardly of the
horizontal geometrical center line of the lens, said ' opposite sides of said horizontal line extending
55 attachment having a portion adapted to overlie
a face of the lens and be pivotally connected to
said'lens and a portion adapted to overlie the
edge of the lens with the major portion thereof
. lying above a horizontal line extending through
60 the pivotal connection to the lens, said edge por
tion having an attaching face on the side there
of adapted to lie toward the lens‘ which is rela
_ tively short in a direction? following'the edge 01' >
the lens and which is substantially parallel with
a line tangent with the edge of the lens at said
location when the portion overlying‘ the face of
the lens is in its normal position of use, said at
taching face lying at an angle other than normal
through the pivotal connection to the lens and
being adapted to engage the edge of the lens at
two spaced points and being- supported so as to
exert forces on said portion overlying the edge
of the lens in both directions ‘of movement of
said portion about the pivotal connection to the 60
lens when the parts areiin their normal position
of use.
.
V
8'. A device of the character described for at
tachment to a lens at 'a point removed from the
horizontal geometrical center line of the lens, said
attachment having a portion adapted to overlie
a face of the lens and be pivotally connected to
said lensand a portion adapted to overlie the edge
relative to the horizontal center line of the lens _ of the lens with the major portion thereof lying
70 when the attachment is on the lens, and resilient
7
above a horizontal line extending through the ‘
means secured to said face and havingv portions‘
pivotal connection to the lens, said‘edge portion
adapted to extend outwardly of the opposite sides
ofthe said horizontal line extending through the
having an attaching face on the side thereof
adapted to lie towards the lenswhich is relatively
pivotal connection to the lens and being adapted - short and cupped in the direction which is to
to engage the edge of the lens at two’ spaced
follow the edge of, the lens, and which lies at an
7
angle other than normal
. relative to the horizontal
- 2,106,988
horizontal geometrical center line of the lens,
center line of the lens when the attachment is on
said lens and resilient means secured to said
cupped face so as to have the portion thereof
engaging said face assume‘the shape thereof and .
having portions adapted to, extend outwardly of
said attachment having a portion adapted to over
lie a face of the lens and be pivotally connected
to said lens and a portion adapted .to overlie the
edge of the lens and having a, projection on the ,
upper side thereof when the attachment is in its
the opposite sides of the said horizontal line ex
tending through the pivotal connection to the
lens and being adapted to engage the edge of the
10 lens at two spaced points and being supported so
normal position of use, said, edge; portion and
projection having an attaching [face on the side
thereof adapted to lie towards the; len "which is
as to exert forces on said portion overlying the
the edge of the lens and which liesatiw'an angle‘
other than normal relative to the horizontal="cen
edge of the lens in both directions of movement
of said portion about the pivotal connection to the
lens when the parts are in their normal position
of use.
'20
9. In an ophthalmic mounting, a lens, av lens
holding member having a portion overlying a face
of the lens and pivotally connected to said lens at
a point removed from the horizontal geometrical
center line of the lens and a portion overlying the
edge of the lens with the major portion thereof
lying above a horizontal line extending through
the pivotal connection to the lens, said edge por
tion having an attaching face on the side thereof
adjacent the lens which is relatively short in a
direction following the edge of the lens and which
lies at an angle other than normal 'relative to the
horizontal center line of the lens when the parts
are in their normal position of use, and resilient
30 means secured to said face and having portions
extending outwardly of the opposite sides of said
horizontal line extending through the pivotal con
nection to the lens and engaging the edge of the
lens at two spaced points and being supported so
35 as to exert forces on said portion overlying the
edge of the lens in both directions of movement
of said portion about the connection to the lens
40
45
50
55
relatively shortrin a direction which. " to follow 10
ter line of the lens when the attachment is on
said lens and- which is formed irregular to pro
vide a portion acting as a support for the attach
ment of resilient means and a portion forming a
15'
clearance for the resilient means on the side of
said portion adapted to overlie the edge of the '
lens opposite the projection for free flexingv of
the adjacent portion of said resilient means dur 20
ing use and resilient means secured to said sup
port at a point above a horizontal line extend
ing through the pivotal connection to the lens
and having portions adapted to extend outwardly
of the opposite sides of said horizontal line and» 25
being adapted to engage the edge of the lens at
two spaced points and being supported so as to
exert forces on said portion overlying the edge of
the lens in both directions of movement of said
portion about the pivotal connection vto the lens
when the parts are in their normal position of
use.
‘
'
.
12. In an ophthalmic mounting, a lens, a lens
holding member secured/to the lens at a point
removed'from the horizontal geometrical center 35
line of the lens, said lens holding member hav
ing a portion overlying a face of the lens and
when the parts are in their normal position of ‘
pivotally connected to said lens and a portion
use.
'
overlying the edge of the lens and having a pro10. In an ophthalmic mounting, a lens, a lens
40
holding member having a portion‘ overlying a face jection on the upper side thereof when the lens
holding
member
is
in
its
normal
position
of
use,
of the lens and pivotally connected to said lens
said edgeportion and projection having an at
at a point removed from the horizontal geo
taching face on the side thereof lying towards"
metrical center line of the lens and a portion over
lying the edge of the lens with the major portion the lens which is relatively short in a direction ' 45
thereof lying above a horizontal line extending - following the edge of the'lens and whichlies at
through the pivotal connection to the lens, said an angle otherthan normal relative to thehori
edge portion having an attaching face on the side zontal center line of the lens and which is formed
thereof adjacent the lens which is relatively short irregularto provide a portion acting as a support
and cupped in the direction following the edge for the attachment of resilient means and a por
of the lens and which lies at an angle other tion forming a clearance for the resilient means
than normal relative to the horizontal center on the side of said portion overlying the edge of
line of the lens when the parts are in their nor - the lens opposite the projection for free ?exing of
mal position of use, and resilient means secured the adjacent portion of said resilient means dur
ing use and resilient means secured tosaid sup
to said cupped face ‘with said resilient means sub
55
stantially assuming the shape of said face and port at a point above a horizontal line extending
with portions thereof extending outwardly of the
opposite sides of the said horizontal line extend
ing through the_pivotal connection to the lens
60 and engaging the edge of the lens at two spaced
points and being supported so as to exert forces
on said portion overlying the edge of the lens in
both directions of movement about the'pivotal
connection to the lens when the parts are in their
normal position of use.
11. A device of the character described for at
tachment to a lens at a point removed from the
through the pivotal connection to the lens and
having portions extending outwardly of the op
posite sides of said‘ horizontal line and engag-.
ing the‘ edge of the lens at two spaced points
and being supported so as to exert forces on said
portion overlying the edge of the lens in both
directions of movement of said portion about the
pivotal connection to the lens when the parts are
in their normal position of use.
EDWARD M. SPLAINE.
65
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 294 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа