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Патент USA US3092426

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June 4, 1963
P. s. FLETCHER
3,092,416
LEG-REST CONTROL LINKAGE FOR MULTIPLE POSITION CHAIR
Original Filed July 10, 1958
3 Sheets-Sheet l
mVmm
PETER 5. FLETCHER
BY
2
*
8
ATTOQNEYS
June 4, 1963
P. s. FLETCHER
3,092,416
LEG-REST CONTROL LINKAGE FOR MULTIPLE POSITION CHAIR
Original Filed July 10, 1958
F Flu.
5 Sheets-Sheet 2
3.,
INVENTOR.
PETER 6. FLETCHER,
June 4, 1963
3,092,416
P. s. FLETCHER
LEG-REST CONTROL LINKAGE FOR MULTIPLE POSITION CHAIR
Original Filed July 10, 1958
3 Sheets-Sheet 3
FIG. 5.
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A TT‘ORNEYS
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United States Patent O?ice
3,992,415
Patented June 4, 1963
1
2
as to perform the proper actuating function in both mo
3,092,416
tion phases.
LEG-REST CONTROL LENKAGE FOR MULTWLE
PQSITION CHAIR
In accordance with the invention herein, there is pro
vided in a multiple position reclining chair, ‘a leg-rest con
trol linkage carrying the leg-rest and guiding the same
for movement ‘between retracted position beneath the seat
and an extended position forwardly of the seat, and ac
tuating means for the control linkage in the nature of a
control link. The leg-rest control linkage includes a leg
Peter S. Fletcher, Delray Beach, Fla., assignor to Anton
Lorenz, Boynton Beach, Fla.
Original application July 10, 1958, Ser. No. 747,748, new
Patent No. 2,940,509, dated June 14, 1960. Divided
and this application June 13, 1960, Ser. No. 35,674
9 Claims. (Cl. 297—89)
10 rest link pivotally mounted on the seat and the control
The present invention relates to improvements in mul
link is connected to the leg-rest link by an actuating pivot.
tiple position reclining chairs, and in particular relates
The actuating pivot has three respective positions respec
to new and improved leg-rest actuating means for chairs
tively corresponding to each selected position of the leg
of this type.
rest in the upright sitting, intermediate tilted sitting, and
This application contains subject matter identical to 15 fully-tilted positions of the body-supporting unit, and the
that disclosed in my co-pending United States Patent ap
actuating link is pivotally mounted on the chair support
plication, Serial No. 747,748, ?led July 10, 1958, and en
frame at a point which is at the center of the circle de
titled “Multiple-Position Chair,” now Patent No. 2,940‘,
?ned by the three respective positions of the actuating
509, issued on June 14, 1960, and constitutes a division
pivot. In this manner, the actuating link is effective to
of said co-pending application.
20 elevate the leg-rest to its extended position when the body
Multiple position reclining chairs are characterized by
supporting unit is brought to its intermediate, tilted sitting
their ability to be brought from an upright sitting posi
position, and then by further continuous actuation to main
tain the leg-rest in proper leg-supporting position sub
tion to an intermediate, tilted sitting position, and then,
if desired, to a fully-tilted or reclining position. In the
stantially at the level of the forward end of the seat when
tilted sitting position, the seat and back-rest are only 25 the body-supporting unit is then moved to its fully-tilted
position.
slightly inclined or tilted. The occupant’s legs, however,
are supported in an elevated, outstretched condition. This
Additional objects and advantages of the invention will
represents an “active” position in which the chair occu
become apparent during the course of the following speci
pant’s body is disposed in a substantially upright attitude ' ?cation when taken in connection with the accompanying
with his head facing forwardly, and the occupant is in 30 drawings, in which:
FIG. 1 is a side elevational view of a multiple position
position to read, view television, hold conversations, and
the like. In the fully-tilted position, the occupant’s legs
reclining chair incorporating the leg-rest actuating means
of the present invention, with portions of the chair broken
body is supported in a reclining position with his eyes
away and shown in section to reveal inner construction,
directed upwardly for maximum relaxation.
35 the chair being shown in its upright sitting position;
My aforementioned co-pending US. patent application,
FIG. 2 is a view similar to FIG. 1 showing in full line
Serial No. 747,748 disclosed means for guiding the seat
the chair in its intermediate or “active” tilted sitting posi
and back-rest unit through its various positions. The
tion with the leg-rest in its extended position, and showing
present application is concerned with means for actuating
in broken line or phantom, the chair in its fully-tilted or
are still supported in an outstretched condition, but his
the leg-rest of the chair in such a manner that it is brought 40 “inactive” position, the leg-rest linkage in this latter posi
to ‘an extended leg-supporting position forwardly of the
tion being illustrated schematically;
seat when the seat and back-rest are brought to their in
FIG. 3 is a diagrammatic view ‘showing the manner in
which the location of the pivotal mount of the leg-rest
termediate, tilted sitting position, and is then maintained
extended in proper leg-supporting position When the seat
and back-rest are brought to their fully-tilted position.
An object of the invention, therefore, is the provision
actuating link is determined;
45
FIG. 4 is a diagrammatic View similar to FIG. 3, but
further showing the relationship between the pivotal mount
of leg-rest actuating means operable in response to move
of the actuating link and the pivotal mount of the body
supporting unit;
ment of the seat and back-rest to raise the leg-rest from
a retracted position beneath the seat to an extended posi—
FIG. 5 is an elevational View, with portions broken
tion forwardly of the seat when the seat and back-rest 50 away and shown in section, of another emodiment of re
‘are brought to their intermediate, tilted sitting position,
clining chair incorporating leg-rest actuating means made
and then to maintain the leg-rest in its extended position
in accordance with the invention herein, the chair being
forwardly of and substantially at the level of the front
shown in its upright, sitting position; and,
end of the seat, when the seat and back-rest are brought
FIG. 6 is an elevational view of the chair shown in’
to their fully-tilted position.
55 FIG. 5, the chair being illustrated in full line in its in
Another object of the invention is the provision of leg_
termediate, tilted sitting position and in broken line in
its fully-tilted position.
rest actuating means of the type described which is eifec—
tive to elevate the leg-rest through a long path in response
Referring in detail to the drawings and particularly to
to short movement of the seat and back-rest and then
FIGS. 1 and 2, there is shown an illustrative example of
move the leg-rest through a relatively shorter path in re 60 ‘a reclining chair incorporating the invention herein and
sponse to greater movement of the seat and back-rest.
A further object of the invention is the provision of
leg-rest actuating means of the type described which is
formed of a single link so positioned and dimensioned
designated generally by the reference numeral 10. This
reclining chair 10 is of the multiple-position type in that
it is capable of being brought from an upright sitting
position, illustrated in FIG. 1, to an “active” intermediate,
3,092,416
4
tion shown in full line in FIG. 2, the forward end of the
seat 18 is moved rearwardly and upwardly and carries
with it the link 48. This movement moves the seat pivot
56 closer to the pivot 64 on the support which causes the
tilted sitting position shown in full line in FIG. 2, and
thence may be brought to an “inactive” fully-tilted posi
tion, shown in broken link in FIG. 2.
The reclining chair 10 includes a base or support frame
actuating link 62 to push the leg-rest link 48‘ forwardly
and upwardly, raising the leg-rest control linkage 38 and
bringing the leg-rest 36 to its extended position. A stop
12 having spaced side walls 14 interconnected by suitable
cross rods or braces 30 and 34. 'The chair also includes
a body-supporting unit designated generally by the refer
element 68 is ?xed to the link 4-2 intermediate the pivots
ence numeral 16 which comprises a seat 18 and a back
rest 20 formed integrally with each other or rigidly con
' 54 and 60, said stop element 68' being positioned to en
nected to each other to form an integral rigid body-sup 10 gage the link 48 in the intermediate, tilted sitting position
shown in full line in FIG. '2. This engagement of the
stop element 68 with the link 48 maintains a ?xed angular
mounted on the support12 for movement relative thereto
relationship between the links 42 and 48, so that the leg—
to the two inclined positions previously described.
rest is maintained or locked in its extended posit-ion when
The seat 18 has a depending bracket member 22 rigidly
the ‘body-supporting unit 16 is moved from the tilted sit
mounted thereon slightly to the rear of the center of said
ting position shown in full line in FIG. 2 to the fully-tilted
seat 18. Therbracket 22 is connected at its bottom end by
position shown in broken link in FIG. 2. In this move~
a pivot 24 to a support bar 26. This support bar 26 is
ment from the intermediate, tilted sitting position to the
pivotallymounted on the support ‘12 by a pivot 28 and is
porting unit. This body-supporting unit 16 is movably
fully-tilted position, the actuating link 62 pivots con
normally maintained in the horizontal position, shown in
tinuously from a relatively horizontal position to a rela
FIG. 1, and in full line in FIG. 2, resting upon a cross
brace or stop member 30 which is rigidly andimmovably
connected between the side walls 14 of the support 12.
In moving from the upright sitting position of FIG. 1 to
the intermediate, tilted sitting position shown in full line
in FIG. 2, the body-supporting unit 16 pivot-s about the
pivot24, the support bar 26 remaining in its horizontal
positionin abutment with the cross brace 30 and the pivot
24 serving in this instance as a ?xed pivot which is im
movable relative to the support frame 12. In the in
tively vertical upright position, carrying the seat pivot 56
away from the pivot 64 on the support. Duringsuch
movement, the links 42 and 52 pass through an in-line,
dead center position. The stop element 63 insures that
these links pass back through the dead center position
when the body-supporting unit is returned from the, fully
tilted position to the intermediate position.
,
When a person is seated in the reclining chair 10 in
‘the upright sitting’position of FIG. 1 and wishes to move
termediate, tilted sitting position of FIG. 2, the bracket 30 to a rearwardly tilted position, he applies rearward pres
sure to the back-rest 20, causing the body-supporting unit
.22 engages and is stopped from further pivoting move
16 to pivot about the pivot 24 until the bracket 22 en
gages the stop 32 and the unit 16 is retained in its inter
mediate or “active” tilted position. Thus, the bracket 22
In moving from the intermediate, tilted sitting position
and pivot 24 may be designated as a ?rst guiding means
shown in full line in FIG. 2, to the fully reclined position
shown in broken line in FIG. 2, the unit 16 pivots about , ,. which guides the unit 16 in a ?rst path of movement from
ment by a stop member 32 which is ?xedly and immov
ably mounted on the support-bar 26.
the upright siting position to the intermediate, tilted sit
ting position. In this position, the actuating link 62 has
raised the_leg-rest control linkage 33, and leg-rest 36 is
the pivot 28, the link 26 rising from its seatedpo-sition
upon the cross brace 30 and pivoting in ?xed relation to
‘the bracket 22 to permit this further movement.
-
“In the fully reclined position shown in broken line in 40 ‘brought to the extended position forwardly of and at
lFIG. 2, the rear portion of the seat 18 engages a cross . ,
the level of the front of the seat 18. This intermediate,
tilted sitting position, shown in full line in FIG. 2, repre
sents an active sitting position in which the user’s legs
are raised and supported by the leg-rest 36 and in which
rearward tilting'movement of the body-supporting unit
the user’s body is slightly tilted to the rear but is still in
16 past its fully reclined position.
The reclining chairrll) also includes a leg-rest 3,6 which . . a relatively upright sitting position in which the user may
view television, read or the like.
is ‘mounted on a leg-rest control linkage designated gen
brace 34 which is ?xedly ‘secured to the support frame 12,
the cross brace 34¢ serving as to stop to prevent further
'Ifthe user then wishes to move to a more fully tilted
erally by the reference numeral 381 in such a manner that
position, he shifts his weight rearwardly and applies a
upon rearward tilting of the body-supporting unit ‘16, the
leg-rest 36 is raised from the retracted position of FIG. ‘1', 50 greater pressure to the back-rest 20 causing the body
supportingunit 16 to pivot further rearwardly about the
in which it is located beneath the forward end of the seat
pivot 28, and moving the body-supporting unit to the
18, to the extended position of FIG. 2 in which it is lo
fully tilted position shown in broken line in FIG. 2, in
cated forwardly of and substantially at the level of the
which
the rear of the unit engages and is stopped by the
forward end of the seat 18,.
i
.
‘ The leg-rest control linkage 38' includes a pair of links 55 cross brace 34. The leg-rest control linkage 38 during
this second movement phase is locked by the stop: ele
40 and 42 connected at spaced points to the leg-rest 36
ment 68 and moves as a unit with the forward end of
by a respective pair of pivots 44 and 46. At its rear end
the seat 18 with little change in its position relative there
the link 49 is connected to a link 48 by a pivot 59, and
to. This fully tilted position represents a position of re
the link 42 is connected at its rear end to a link 52 by
laxation in which the user’s body is supported in an
pivot 54. The free end of the link 48 is pivotally mounted
inactive condition.
on the forward end of the seat 18 by a pivot 56. The
In moving from the intermediate, tilted sitting posi
free end of the link 51 is pivotally mounted on the sup
tion to the fully-tilted position, the unit 16 can no longer
port 12 by apivot‘SS. Thelink 42 crosses the link 48 and
turn about pivot 24 because the bracket 22 is engaged
is pivotally connected thereto at its crossing-over point by
with
thestop 32 and bracket 22 is thus locked rigidly to
65
a pivot 60.‘
'
'
support bar 26. The center of rotation is thus shifted
The leg-rest control'linkage 38 is actuated by an actuat—
rearwardly to. pivot 28. ‘The pivot 28‘ may thus be des
.ing link 62, one end of which is pivotally mounted on the
ignated as second guiding means which guides the unit
support12 by a pivot 64 and theother end of which is
1
about a second path of movement from the intermediate
connected to the link 48 by a pivot 66 at ‘a point inter
mediate the pivots 56 and 60. The pivot 66 represents the 70 tilted sitting position to the fully-tilted position.
FIG. 3 shows the manner in which the arrangement of
point of actuation of the leg-rest control linkage 38 and
the
leg-rest control linkage 38‘ and actuating link 62 is
is therefore designated as an f‘actuating pivot.”
determined to produce the desired actuation of the leg
In general terms, it may be explained vthat when the
rest 36. In this regard, it will. be understood that the
.ibody-suporting unit 16 is moved from itsupright sitting
operation of actuating link 6-2 must be such that it raises
75
position of FIG. 1 to the intermediate, tilted sitting posi~
3,092,416
the leg-rest rapidly through a long path during the ?rst
motion phase in response to the ?rst movement of the
6
and '66 and the line between pivots 66 and 28 be as close
to co-linear as possible. Therefore, the location of pivot
body-supporting unit 16, and then moves the leg-rest
through a shorter path of movement during the second
motion phase in response to a relatively large tilting move
ment of the body-supporting unit. Thus, during the ?rst
motion phase, the leg-rest 36 is moved from its retracted
position to an extended position forwardly of the seat 18
and substantially at the level of the forward end thereof,
and in the second motion phase, the leg-rest 118 is merely 10
mate this oo-axial relationship. The distance between
‘the seat pivot 56 and the ?xed pivot 64 is, therefore, in~
creased during the second motion phase.
Thus, initially, a point of actuation 66 on the leg-rest
link 48‘ is arbitrarily selected ‘and the pivot 64 is chosen
to produce the desired elevation of the leg-rest during the
?rst motion phase. At the same time, the pivot 64 is
little or no displacement relative to the seat.
selected to satisfy as closely as possible the condition that
the line between pivots 64 and 66 and the line between
maintained at the level of the seat forward portion with
The struc
point 66 on the link 48 is so determined as to approxi
ture of the present invention permits this dual leg-rest
pivots 66 and 28 approach a co-linear relationship during
movement in the two motion phases to be performed by
the second motion phase.
a single actuating link 62.
15
It will now be appreciated that when the seat 18 is
Since the seat 18 travels through two di?erent paths
tilted rearwardly about pivot 24 through a short distance
of movement during the two motion phases, a complex
during the ?rst motion phase, the pivot 56 on the seat
actuating linkage would seem to be required for producing
turns ‘about said pivot point 24 and moves toward the
?rst a long leg-rest movement and then a shorter leg-rest
?xed pivotal mount 64 of the actuating link 62. The
movement. It was found, however, that if the leg-rest
actuating link 62 turns upwardly about its ?xed pivot 64
control linkage were mounted at least in part on the
seat so as to follow the seat movement, a single actu~
ating link could be employed to produce both desired
movements of the leg-rest if the actuating link were
and exerts a pushing force on the leg-rest link 48 at
the actuating point de?ned by pivot 66. The link 48 is
therefore turned in a wide angle about pivot 56 from
the rearwardly-extending position of FIG. 1 to the ele
mounted on the support frame in the proper location. 25 vated, forwardly-extending position shown in solid line
Knowing the desired positions of the leg-rest in each of
the positions of the chair, the corresponding positions of
the leg-rest control linkage 38 can also be determined, and
a mounting point for a single actuating link can be located.
With reference to FIG. 3, it will be explained that the
location and length of the actuating link 62 is pre
liminarily determined by ?rst laying out the desired posi
tions of the leg-rest 36 in each of the three chair posi
in FIG. 2. When the body-supporting unit-is further
tilted about the ?xed pivot 28, the pivot 66 is made to
travel about the pivot 64. The location of pivot 64- is so
chosen that there is one position during the second motion
phase in which the radius joining pivots 66 and 64 is co
linear with the radius joining pivots 66 and 28. This
co-linear relationship is shown in FIG. 4 in which the
line F, representing the radius joining pivots 66 and 28
is co-linear with the radius joining pivot 66 and point B
tilted sitting position, and the fully-tilted, reclined posi 35 (pivot 64), ‘and the pivot 66 is located on line. F at point
tion. From these three desired positions of the leg-rest
660'. In this way, the pivot '66 in effect will move sub
tions, namely the upright sitting position, the intermediate,
36 the positions of the corresponding point actuation,
namely pivot 66, can be determined and plotted. FIG. 3
shows this plotting, the position of actuating pivot 66 in
the upright sitting position being shown at 66a, its posi
tion in the tilted sitting position being shown at 66b, and
its position in the fully~tilted position being shown at
stantially as if it were mounted on a link which in turn
was pivoted to the support frame co-axially with the
pivot 28. Stated differently, the arcuate path G followed
‘by the actuating pivot ‘66 is e?‘eotively the same as the
path H which pivot 66 would follow if it were carried
'by a link pivotally mounted at 28, and is therefore
{also eifectively the same as the path which pivot 56
660.
The points 66a and 66b are then connected by a
The legarest 36, therefore, follows the forward
straight line A, and the points 66b and 660 are connected 45 follows.
portion of seat 18 upwardly ‘at approximately the same
by a straight line B. Perpendicular bisectors C and D
rate during the second motion phase with a'minimum of
are-then extended from the respective lines A and B
relative movement between said leg-rest and seat.
until they meet at point E. This point E represents the
Referring now to FIGS. 5 and 6, there is shown a
pivotal point for the actuating link 62, namely the ?xed
reclining chair 210 with a somewhat modi?ed construc
pivot 64 in FIG. 1.
50 ltion enabling it to be brought from an upright sitting
It will thus be apparent that if the actuating link 62
position shown in FIG. 5 to an ‘active, intermediate, tilted
is mounted on the support frame 16 by pivot 64 at the
sitting position shown in full line in FIG. 6, and thence
point B located by the procedure just described, and is
connected at point 66 to the leg-rest link 48, it will move
the leg-rest 36 to each of its three desired positions.
It is obvious that where the leg-rest 36 is moved rapidly
relative to the seat during the ?rst motion phase, the
actuating pivot 66 must have a long movement relative
to an inactive, fully-tilted position shown in broken line
in FIG. 6.
The chair 210‘ includes a support ‘frame 212 having
side walls 214 connected by cross-braces which include
the cross braces 230, 234 and 288. The blodyasupporting
unit 216 formed by. the rigidly connected seat 218 and
to the seat and the leg-rest link 48 must turn at a rapid
rate. This means that the pivotal mount 64 of the link 60 back-rest .220 is mounted on the support 212 for mover
ment to the active and inactive tilted positions. The
62 must be remote and out of alignment with the pivotal
mounting means is so constructed as to produce a move
mount 24 of the seat 18, or stated di?erently, that the
actuating pivot 66 and the pivot 56 have two widely differ
ent radii. In the second motion phase, however, it is
desired that the leg-rest travel upwardly at substantially 65
the same rate as the forward end of the seat, which means
ment which is different from that achieved in the chair
10 of FIGS. 1 and 2, that is to say, the movement of
the body-supporting means to the intermediate, tilted
stitting position is a pivotal movement about a ?xed pivot
point, and the ‘further movement from the intermediate
tilted sitting position to the fully til-ted position is a com
that the pivots 56 and 66 must ‘have centers of rotation
which are as close as possible. The optimum situation
pound movement a?orded by a pair of guiding links.
would be for the pivots 56 and 66 to turn about the
The mounting means for the body-supporting unit 212
same centers of rotation, which is of course impossible 70
includes a bracket 222 ?xed to the seat 218‘ and depend
because in the second motion phase the pivot 66 turns
about ?xed pivot 64 while the pivot 56 on the seat turns
about the ?xed pivot 28. To produce the best movement
ing from the lower surface thereof at a point rearwardly
of the center of the seat. The lower end of the bracket
222 is connected by pivot 224 to an intermediate portion
under the circumstances, therefore, the position of pivot
of a support bar 226 which carries a stop member 2362.
64 must be 50 located that the line between pivots 64 75 The support bar 226 is mounted on the support 212 by
3,092,416
7
a pair of guiding links 276 ‘and 278, The guiding links
its intermediate, tilted sitting position shown in full line
276 and 278 are connected at one end to the opposite
in FIG. 6, the pivot 258 is raised with the seat 218 and
moved rearwardly closer to the pivot 264. This move
ment causes the actuating link 262 to pivot upwardly
ends of the support bar 226 byvrespective pivots 28d and
282, and are connected at their other ends to the support
212 'by respective pivots 284 and 286.
The support bar 226 is normally maintained in the
horizontal position shown in FIG. 5 by the weight of
the body-supporting unit, the end of support bar 226
about pivot 264, raising the link 252, and actuating the
leg-rest linkage 238 to bring the leg-rest 236 to its ex
tended position shown in full line in FIG. 6.
When the body-supporting unit 216 is brought to its
fully-tilted position, the pivot 258 is moved rearwardly
resting upon the cross~brace 230 which acts as a support
to prevent the bar 226 from moving downwardly due to 10 of the ?xed pivot 264, and the actuating link 262 pivots
to a substantially upright position, shown in broken line
in FIG. 6 to maintain the link 252 in its raised position
and the leg-rest 236 in its extended position.
The size of the actuating link 262 and the location of
of the bracket 222 and acts as a stop to prevent the body 15 its pivotal mount 264 on the support frame 212, are deter
mined in the manner previously described ‘and illustrated
suppor-ting unit 212 and its ‘rigid bracket 222 from pivot
in FIGS. 3 and 4. It may be noted that in this instance,
ing forwardly about the pivot 224.
the pivotal movement of the body-supporting unit 216
When the person seated in the chair 2141 applies his
during the second motion phase is about an instantaneous
weight rearwardly upon the ‘back-‘rest 220*, the body
supporting unit 216 pivots rearw-ardly about the pivot 224 20 center of rotation which may be found by extending the
longitudinal axes of the front and rear guiding links 276
until the depending bracket 222 engages the stop member
and 278 to their point of intersection.
232 preventing further pivoting movement and de?ning
While preferred embodiments of the invention have
the active, intermediate, tilted sitting position shown in
been shown and described ‘herein, it is obvious that nu
full line in FIG. 6. This initial movement is ‘a simple
pivoting movement, the pivot 224 serving as ‘a ?xed pivot 25 merous additions, changes and, omissions may be made
in the structure and form of the illustrated embodiments
during this movement phase.
without departing from‘ the spirit and scope of the inven
In the intermediate tilted position, the engagement of
tion.
the bracket 222 with the stop member 232 affords a rigid
What I claim is: ,
and immovable connection between the bracket 222 and
1. A multiple position reclining chair comprising a
the support bar 226 insofar as further rearward movement 30
support frame, body-supporting means including a seat
is concerned. When the person in the intermediate, tilted
and back-rest mounted on the support frame for move
sitting position then wishes to move to a fully tilted posi
ment through a ?rst motion phase from an upright sitting
tion, ‘he applies his weight further upon the back-rest, and
position to ‘an intermediate, tilted sitting position, and
since the unit 216 is now locked against further pivoting
movement about pivot 224, the support bar 2726 is shifted 35 through a second motion phase from said tilted sitting
position to a fully-tilted positioma leg-rest, a leg-rest
trearwardly. This rearward shifting movement of link 226
control linkage carrying the leg-nest and guiding the latter,
is a compound movement afforded vby the guiding links
said leg-rest control linkage including a leg-rest link piv
276 and 27 8, the latter pivoting rearwardly about the re
spective pivots 284 and 286. It will be observed that the 40 ot-ally mounted on said seat, and actuating means for
elevating the leg-rest from a retracted position beneath the
front guiding link 276 is longer ‘and disposed at a more
seat to an extended position forwardly of and substan
forwardly-inclined angle than the rear guiding link 278,
tially at the level of the front end of the seat when the
so that when the link 276 translates rearwardly, the ‘for
body-supporting means moves through said ?rst motion
ward end thereof is raised relative tothe rear end and
phase,’ and for maintaining the leg-rest in its extended
the body-supporting unit is further tilted rearwardly. The
[forward pivoting movement of the guiding links 276 and
278. It will also be noted that in the upright sitting
position of FIG. 5, the seat 218 rests upon and is sup
ported :by the cross-‘brace 288' which is located forwardly
body-supporting unit 216 is stopped in its fully-tilted posi 45 position when the body-supporting unit is moved through
the second motion phase, said actuating means comprising
tion, shown in broken line in FIG. 6, by engagement of
its rear end portion with the cross-brace 234.
7
It will thus be apparent that the pivot 224 constitutes
a ?rst guiding means which permits movement of the
‘an actuating link pivotally mounted on the support frame
‘and pivotally connected to said leg-rest link at an actuat
ing pivot spaced below the pivotal mount of the leg-rest
body-supporting unit 216 ‘about a ?rst instantaneous cen~ 50 link on the seat, said actuating link rotating during the
second motion phase substantially with said seat such that
the actuating pivot moves in an arcuate path approxis
mately concentric with the path of the pivotal mount of
said leg-rest link on said seat.
' constitute a second guiding means which guides the body
-2. A multiple position reclining chair comprising a
su-pporting means about a second instantaneous center of 55
support frame, body-supporting means including a seat
rotation and along a second path in a compound move
ter of rotation and along a ?rst arcuate path ofmove
ment from the upright sitting position to the intermediate,
tilted sitting position. The guiding links 276 and 278
ment from the intermediate, tilted sitting position to the
fully tilted position.
-
1
- ~
and back~rest mounted on the support frame for move
ment through a ?rst motion phase from an upright sit
ting position to an intermediate, tilted sitting position,
The leg-rest 236 of the chair 7210 is carried and guided
by a control linkage 238 which includes links'240 and 60 and through a second motion phase from said tilted sit
ting position to a fully-tilted position, a leg-rest, a leg-rest
242 connected to said leg-rest by respective spaced pivots
244 ‘and 246. The ends of links 240 and 242- are con
control linkage carrying the leg-rest and guiding the lat
ter, said leg-rest control linkage including a leg-rest link
nected to the ends of links 248 and 252 lby'respective
pivotally mounted on said seat, said actuating means for
pivots 250 and 254. The links 250 and 254 are mounted
on the seat 218 by respective pivots 256 ‘and 258. At 65 elevating the leg-rest from. a retracted position beneath
the seat to an extended position forwardly of and sub—
their crossing-over point, the links 242 and 248 are inter
stantially at the level of the front end of the seat when
connected by pivot'260.
V
a
-
-
>
c
-
The leg-rest control linkage 238 is actuated by an
the body-supporting means moves through said ?rst mo
tion phase, and for maintaining the leg-rest in its extended
actuating link 262 mounted ‘at one end upon the support 70 position when the body-supporting unit is moved through
frame 212 by pivot 264,-and connected at its other end
the second motion phase, said actuating means compris
to an intermediate point on link 252 by a pivot 266. The
ing a single actuating link pivotally mounted on the sup
pivot 266 represents the‘point of actuation of the’control
' port frame and pivotally connected to said leg-rest link at
linkage V238 and is therefore designated as an “actuating
an actuating pivot located at a point beneath the pivotal
pivot.” When the body-supporting‘ unit 212 is broughtto 75 mount of the leg-rest link on the seat, said actuating link
3,092,416
10
-
extending downwardly and forwardly from its pivotal
mount in the upright sitting position of the body-support
ment in response to movement of the body-supporting
ing means and turning upwardly during the ?rst motion
tended position forwardly of and substantially at the level
unit from a retracted position beneath the seat to an ex
phase to raise said leg-rest link and move the leg-rest to
of the forward end of the seat, a support bar, a pair
of guiding links mounting said support bar on said sup
port with the support bar normally resting in a ?xed hori
that the actuating pivot means in an arcuate path approx
zontal position, one end of each guiding link being pivot—
imately concentric with the path of the pivotal mount of
ally connected to the support, the other end of each guid
said leg-rest link on said seat.
ing link being pivotally connected to a respective end
3. A multiple position reclining chair according to 10 of said support bar, a depending extension on said seat,
claim 2 in which said leg-rest control linkage also in
a ?xed pivot connecting the lower end of said depending
cludes a second leg-rest link pivotally mounted on the
extension to an intermediate point on the support bar
support frame, and a pair of links pivotally mounted at
for pivoting movement of the body-supporting means
spaced points on said leg-rest, one of said pair of links
on said support bar along a ?rst arcuate path of
being pivotally connected to both leg-rest links, the other 15 movement from an upright sitting position to an inter
of said pair of links being pivotally connected to one of
mediate, rearwardly tilted position, a blocking member
said leg-rest links at a spaced point thereon.
rigid with the support bar and positioned to engage said
4. A multiple position reclining chair according to
depending extension and limit further rearward pivoting
claim 2 in which said leg-rest control linkage also in
movement ‘of said body-supporting unit relative to the
cludes a second leg-rest link pivotally mounted on the 20 support bar, when the unit reaches said intermediate tilted
seat at a point spaced forwardly of the ?rst leg-rest link,
position, said support bar thereafter moving rearwardly
and a pair of links pivotally mounted at spaced points on
on said pair of guiding links to move said body-support
the leg-rest, one of said pair of links being pivotally con
ing unit along a second path from its intermediate tilted
nected to both leg-rest links, the other of said pair of links
position to its fully-tilted position, said leg-rest linkage
being pivotally connected to the second leg-rest link.
25 including means to raise said leg-rest to its extended posi
5. A reclining chair comprising a support, a body-sup
tion when the body-supporting unit is brought to its inter
porting unit including a seat and a back-rest rigid with
mediate tilted position, and to maintain said leg-rest in
each other mounted on said support, a leg-rest, a leg-rest
its extended position when the unit is moved from its in
linkage carrying said leg-rest and operatively’ connected
termediate tilted position to its fully tilted position, said
to the body-supporting unit for coordinated movement in 30 leg-rest linkage means comprising a ?rst pair of links
response to movement of the body-supporting unit from
pivotally connected to the forward end of said seat at
its extended position, said actuating link rotating during
the second motion phase substantially with said seat such
a retracted position beneath the seat to an extended posi
spaced points thereon, a second pair of links respectively
pivotally connected to said ?rst pair of links and pivotally
tion forwardly of and substantially at the level of the for
ward end of the seat, a support bar, a ?rst pivot mount
connected to said leg-rest at spaced points thereon, and a
ing the rear end of said support bar on said support with 35 guiding link pivotally mounted on said support and piv
the support bar normally resting in a ?xed horizontal po
otally connected to an intermediate point on one of the
sition, a depending extension on said seat, a second pivot
links of said ?rst pair of links.
mounting said extension on the forward end of said sup
8. A multiple position reclining chair comprising a
port bar for pivoting movement of said body-supporting
support frame, body-supporting means including a seat
means on said support bar along a ?rst arcuate path of
and back-rest mounted on the support frame for move
movement from an upright sitting position to an inter
ment through a ?rst motion phase from an upright sit
mediate, rearwardly tilted position, a blocking member
ting position to an intermediate, tilted sitting position,
rigid with the support bar and positioned to engage said
and through a second motion phase from said tilted sit~
depending extension and limit further rearward pivoting
ting position to a fully-tilted position, a leg-rest, a leg-rest
movement of said body-supporting unit when the latter 45 control linkage carrying the leg-rest and guiding the lat
reaches said intermediate tilted position, said support bar
ter, said leg-rest control linkage including a leg-rest link
thereafter pivoting rearwardly on said ?rst pivot to move
pivotally mounted on the seat and having an actuating
said body-supporting unit along a second arcuate path of
pivot spaced from the pivotal mount of the leg-rest link
movement from its intermediate tilted position to its fully
on the seat, and an actuating link pivotally connected to
tilted position, said leg-rest linkage including means to 50 said leg-rest link at said actuating pivot and having a piv~
raise said leg-rest to its extended position when the body
otal mount on the support frame at a point located rear
supporting unit is brought to its intermediate tilted posi
wardly of the pivotal mount of the leg~rest link on the
tion, and to maintain said leg-rest in its extended posi
seat in the upright sitting position, said actuating link
tion when the unit is moved from its intermediate tilted
extending forwardly toward the actuating pivot in the
position to its fully tilted position, said leg-rest linkage
including a ?rst link pivotally mounted on the support,
a second link pivotally mounted on the seat, third and
fourth links respectively connected to the free ends of
the ?rst and second links and pivotally connected to the
55
upright sitting position and turning continuously about
its pivotal mount during movement of the body-support
ing means and said pivotal mount and the leg-rest link
on the seat moving toward the pivotal mount of the ac
tuating link on the support frame during the ?rst motion
leg-rest at spaced points vthereon, and an actuating link
phase and away from the pivotal mount of the actuating
pivotally mounted on the support and pivotally connected 60 link on the support frame during the second motion phase
to an intermediate point on said second link.
to locate said actuating pivot at three successive points
6. A reclining chair according to claim 5 in which said
corresponding to the upright sitting, intermediate tilted
leg-rest linkage also includes a stop member rigid with
sitting and fully-tilted positions of the body-supporting
said third link and positioned to engage said second link
means, said actuating link being located to position said
when the leg-rest is brought to its extended position, said 65 points of location on a common circular arc whose center
stop member locking the second and third links in their
is located at the pivotal mount of said actuating link, the
extended positions, whereby said leg-rest is maintained
?rst point of location of said actuating pivot positioning
extended when the body-supporting unit is brought from
said leg-rest link to locate the leg-rest in a retracted posi
its intermediate titlted position to its fully-tilted position. 70 tion beneath the seat when the body-supporting unit is
7. A reclining chair comprising a support, a body
in the upright sitting position, the second and third points
supporting unit including a seat and a back-rest rigid
of location of said actuating pivot positioning said leg
with each other mounted on said support, a leg-rest, a
rest link to locate said leg-rest in an extended position
forwardly of the seat and substantially at the level ‘of the
nected to the body supporting unit for coordinated move 75 forward end thereof when the body-supporting unit is in
leg-rest linkage carrying said leg-rest and operatively con
3,092,416
1.2
its, intermediate, tilted sitting position and fully-tilted
position.
References Cited in the ?le of this patent
UNITED STATES PATENTS
'
'9. A multiple position reclining chair according to
claim 8 in which the line between the actuating pivot
2,781,825
and the pivotal mount of the actuating link on the sup
port frame is effectively co-linear with the line between the
actuating pivot and the pivotal mount of the seat on the
- 2,948,330
Lorenz 5. ____________ __
Luckhardt ___________ __
Lorenz ______________ __
Fletcher _____________ __
Lorenz _, _____________ __
support frame during the second motion phase.
‘ 3,014,756
Schliephacke _________ __ Dec. 26, 1961
2,870,822
2,925,852
2,940,509
Feb. '19,
Jan. 27,
Feb. 23,
June 14,
Aug. 9,
1957
1959
1960
1960
1960
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