close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3079633

код для вставки
March 5, 1963
R. H. BLECKER
3,079,613
SOFA BED CONSTRUCTION
Filed May 19, 1960
"I
`X
3 Sheets-Sheet 1
e
D
).59
r
@5,
March 5, 1963
R. H. BLECKER
3,079,613
SOFA BED CONSTRUCTION
Filed May 19. 1960
3 Sheets-Sheet 2
„t
/
é
/
.
March 5, ,1963
R. H. BLEcKE-:R
3,079,613
som BED CONSTRUCTION
Filed May 19, 1960
//9
/
//74
3 Sheets-Sheet 3
.f3
' f??
55
I
(L
/3
/
J
29
@55M W ¿Mgf'áèa
@E
p
ìd'îàb l Íi
.A- ...
'i
Federated liv/ier. 5, i963
2
of the bed bottom to insure the proper fit of the frame
3,tl79,6i3
concealing front board into the stationary frame.
SQFA BED CGNSTRUC’HÜN
The sofa bed construction disclosed herein employs an
Raymond H. Bleeker, Kenosha, Wis., assigner to Sim
operating linkage which avoids the necessity for close
manufacturing tolerances by incorporation of a resilient
mons Company, New York, NX., a corporation of
Delaware
element serving both to open the front board for outward
passage of the bed bottom and to bias the bed board in
Filed May 19, 1960, Ser. No. 39,383
4 Claims. (Cl. 5--13)
die closed position for locking engagement with the bed
bottom when in its seat-forming position.
Accordingly, the principal object of the invention is the
This invention relates generally to soft beds, and more
particularly to a sofa bed construction including a folding
front board which is carried by the stationary sofa frame
rovision of a sofa bed incorporating an improved linkage
for operating a hinged front board. A further object of
the invention is an arrangement for locking the hinged
ront board in its closed position when the bed bottom is
to conceal the folded bed bottom frame in seat position,
and is opened and closed incident to movement of the bed
bottom between its folded seat-forming position and its
extended sleeping position.
in its seating position.
In the past, it was a common practice in sofa bed con
struction to carry the concealing front board, or at least
a portion of it, as a component of the movable bed bot
tom. This arrangement has certain disadvantages includ
ing the tendency of the ends of the moving front board _
to wear the inside upholstered surface of the sofa bed
arms during the initial part of the outward bed bottom
movement and during the terminal portion of the inward
bed bottom movement. However, if the clearance, be
tween the ends of the front board and the sofa arms, was
increased to reduce wear on the arms of the sofa, an un`
sightly gap commonly resulted at one or both ends of the
front board to detract further from the appearance of the
Other objects and advantages of the invention will be
come apparent by reference to the following description
and the accompanying drawings in which:
FIGURE l is a perspective view of a sofa bed embody
ing various of the features of the invention;
FÍGURE 2 is a side view of the sofa bed shown in FIC
URE l, illustrating the interior mechanism with the bed
bottom in its extended 'ced-forming position and showing
the relation of the hinged front board to the extended
bed bottom;
FÍGURE 3 is an enlarged view similar to FIGURE 2
illustrating the relation of the hinged front board to the
movable bed bottom just prior to movement of the bed
bottom from its balanced intermediate position to its ex
piece, the styling of which already suffered to some extent
from the necessary break in the front face of the piece at 30 tended position;
the ends of the movable front board. rfhus, there was the
FIGURE 4 is a view similar to FEGURE 3 showing the
dilemma of attempting to balance unsightly wear on the
relation of the hinged front board to the movable bed
side arms with undesirable gaps in the front of the sofa
bottom when the latter is in its fully folded seat-forming
bed. A further associated problem arose in connection
smon; and
with customer relations and the answering of service calls
FÍGURE 5 is a fragmentary sectional view taken along
relative to both the wear and gapping problems.
line 5_5 of FlGURE 3.
Other problems encountered in the past, when at least
The sofa bed 9 shown in FIGURE l exempliñes a type
a part of the front board was carried by the movable bed
of construction incorporating a frame il carrying a hinged
bottom, included the matching of the pattern of the uphol
front board 13 movable between a forwardly extending,
stery fabric on the movable bed board with the upholstery
open position and a generally upright, closed position as
fabric on the side arms and with the upholstery fabric on
a lower stationary front board, if one was used. This
problem not only involved the appearance of the sofa bed,
but was particularly acute from a manufacturing view
point as the upholstering of the movable front board was
necessarily performed as a separate operation requiring a
substantial degree of control to match patterns with the
upholstering of the stationary front board and the sofa
arms.
The foregoing diñ’ìculties, particularly those with re
an incident to movement of a bed bottom l5 (see FlG
URÍL 2) between an extended bed-forming position and
a retracted seat-forming position. Although a particular
construction of the frame il and the bed bottom 15 will
be described, at least brielly, it should be understood at
the outset, that the invention herein claimed may be used
with various other frame and bed bottom constructions.
The particular illustrated frame and bed bottom are
generally well known in the art, and except for some
50 minor modifications, are essentially disclosed in United
gard to the fit of the movable front board into the station
States Patent No. 2,595,938, and are also described in
ary sofa, are of special concern in sofas of extra length.
various other United States patents including Nos. 2,749,
in these instances, the front board, if carried by the mov
559, 2,785,415, and 2,817,109; Briefly, the illustrated
able bed bottom, must extend the full front length of the
frame 11 is constructed generally of angle iron and com
sofa to preserve an unbroken upholstered line, but in that 55 prises two spaced »side frame panels i7, each including
case, the front board extends laterally from the side of the
front and rear posts 19 and 21 joined by a connecting
extended bed bottom in out-rigger fashion and presents an
rail 23. The side frame panels i7 are interconnected at
undesirable obstacle. On the other hand, if the length of
their rear by upper and lower cross rails 25 and 27 (see
the front board is limited to the width of the bed bottom,
FÍGURES 3 and 4) and at their lower front by 1a fixed
undesirable lines or gaps between the upholstered front 60 front board 29. The side frame panels 27 -are additionally
board and the stationary upholstered parts detract from
interconnected by an inclined back rest panel 31 which
the overall appearance of the unit.
includes frame members 33 connected to the side frame
Attempts have been made in the past to avoid the above
panels by braces 35 and 37, the brace 35 also lserving to
mentioned problems and diiiìculties by the use of a hinged
carry a portion of a linkage 39 supporting the movable
front board which is secured to the sofa frame and oper
bed bottom 15. In addition, the frame is further rigidi
ated in coordination with movement of the bed bottom
fied by the braces 41, 43, and 45.
by a rigid link connected with the linkage which supports
The bed bottom 15 comprises essentially four pivotally
and determines the path of travel of the movable bed bot
interconnected sections, viz., a head section 47, a long
tom. However, these arrangements are not satisfactory
intermediate section 4?, a connecting section 51, and an
as they require close manufacturing tolerances in order to 70 outer or seat section 53. When extended in generally co
coordinate movement of the hinged front board with that
planar bed-forming position, as shown in FIGURE 2, the
aon-els
3
bed bottom sections 47, 49, 51, and 53 form a rectangular
frame-Work which supports a fabric (not shown) receiv
The cross bar '93 further provides a means for attaching
a flap 101 (see FIGURE 2) which extends from the
mattress receiving fabric so that,v when the bed bottom
is in its folded, seating position, there is provided a taut
continuous support extending from the front edge of the,
ing a mattressS’Z. The bed bottom 15 is supported in the
extended bed-forming position by the linkage 39 and by
»a pair of legs on each side of the bed bottom, one leg
59 of each pair being'piv-otally connected to the outer
section 53 and the other leg 50 of each pair being pivotally
sofa to the rearwardly disposed end of the Iouter section
for receiving the sofa seat cushions. In this last regard,
connected to the intermediate section 49,
as seen by comparison of FIGURES 2 and 3., folding of
the outer and connecting sections 53l and 51 relative to
i Inits folded or seat-forming position,- as ‘seen in FIG
UREv 4, the bed bottom 15 .isV principally supported bythe
linkage 39 with itsv head section 47 disposed vertically
the intermediate section 49 causes vmovement of the cross
bar 93 from a position spaced below the interconnection
of the connecting and outersections, to a position in
along the rear of the sofa bed, with its long intermediate
section 49 disposed along the bottom, with its connecting
section 51'd-isposed upright at the front, and with its outer
section 53 disposed in cantilevered overlying relation to
4
the bed Abottom 15 is in its folded seat-forming position.
15
forwardly adjacent relation to the connecting section 51
at its, interconnection with the outer section 53.
the intermediate section 49 and supported at its rear
ward end by posts 61 ñxed to the side frame panels 1'7.
Y The principal improvement incorporated in the dis
closed construction relates to the hinged mounting of the
side of the bed bottom 15, a pair of spaced links 63 and `
ordination with movement of the bed bottom 15. A fur#
ther important improvement is the provision of an inter~
lock between the hinged front board 13 and the linkageß?
for preventing displacement of the lhinged front board
movable Vfront board 13 to the front ofthe sofa frame and
The linkage 39, in addition to supporting the movable
comprises a novel linkage or arrangement for initiating
bed Ibottom, guides its movement along ya fixed path be
tween the side Vframe panels 17 and comprises, on each 20 andvcontrolling movement «of the front board' 13 in co-y
65 interconnecting Vthe brace 3,5, with the head section 47
of the bed bottom, and a support arm 67 connecting lthe
intermediate section 49 with a bracket 69 ñxed in the
side fra-me panel 17 adjacent the corner formed by the
connecting rail 23 and front post 19. In order to syn
chronize the movement of both support arms 67, and
thereby prevent skewing of the bed bottom V15 as it moves
from its closed position when the bed bottom is inits
folded condition.
In the illustrated construction, the movable front board
1_3 comprises an upholstered> wooden board which is,V
hingedly connected to the fixed front board 29 by aseries
into or from between the side frame panels 17, the sup
port arms 67 are rigidly connected to the ends of an 30 of hinges 195, as seen best in FIGURE 5. In turn, the
egualizing rod, preferably a torque tube 71. Movement
of the bed bottom 15 into and out of its'seat position is
cushioned by a set of tension springs 73 extending on
each side of the bed bottom from the top of fthe front
post 19 to a bracket 75 secured to the intermediate sec
ti-on 49.
`
When in the folded condition, the intermediate, con
ñxed front board 29 is secured at each end to a spacer
107 carried on a shim 109 attached to the front posts119
(see FIGURES 3 and 4). Movement of i the movableï
front board 13 between its generally upright closed posi
tion, as shown in FIGURES 1, 3, 4, and 5, and its open,
forwardly extending position, as shown in FIGURE 2,
to provide clearance for forward extension ofY the bedy
bottom, is controlled, at least in part, by one or more'>
necting, «and outer sections 49, ,51,A and 53 «are locked
tension springs 111. As disclosed, one. springV is
against the expansive forces of the mattress 57 conñned 40 helical
located adjacent each end of the folding'front board> 13 .
therebetween by a locking mechanism 77. This mech
anism lis fully disclosed in United States PatentNo'.,
2,785,415, and includes briefly, al locking link 79 inter
connecting the >outer and connecting bed bottom sections
51 and 53, a control link 81 which unlocks the link 79
incident to unfolding of the outer and connecting sections
51 and 53 relative to the intermediate section 49, alink
83 bridging rthe intermediate and connecting sections
49 fand 51, and an actuating link. 85 which is pivotally
and an additional spring is located centrally of the yfront
board 13. Thus, proper operation of the front boar
can be obtained regardless of any subsequent lengthwise
warping or bowing of the front board 13. Each spring`
extends between. an anchor .113 suitably. secured to thè`
rear of the folding front board 13 and is connectedaf.
its rearward end to a movable element of the linkage
39, in the present instance the torque tube 71.wl1ichrcon.-v
nects the support arms 67 of the bed bottom supporting.
fixed relative to the rhead section 47 and serves to lock 50
linkage.
Each spring can be connected directly to the
the bridging link S3 incident to complete movement of
torque tube 71,'as for instance, by >a closed hook or. eye
the bed bottom 15 into the folded condition.
formed
at its rearwardk end and assembled in-encompass
>Incident to movement of the bed bottom 15 between its
ing
relation
to the _torque tube. However, in theY dis=`r
extended position and its folded position, the legs 59 and
closed construction, each spring is secured to a strap 115`
69. are automatically positionedby a linkage for move
fixed around the torque tube> 71.r
_
i
'l
ment between a retracted position associated with the
Each
of
the
springs
111
serves
in
a
three-fold
capacity,
folded bed bottom condition yand a ñoor engaging posi
i.e., to return the hinged front board 13 tofitsnipright1
:tion associated with the extended bed-forming position.
position incident to return of the bed bottom 15 to Vits,
This linkage is duplicated on both sides of theV bed bot
fully folded position, to initiate movement of'the hingedl
tom and includes a link S7 pivotally extending from 60 front board from its upright position incident 'toroutward
the actuating link 85 to a pivotal connection S9 with the
extension of the bed bottom, and ,to'limit the forwardly
leg 66. Extending pivotally from the connection 89 is
swinging movement of the hinged front board after sutil:
a connecting link 91 which, at its outer end, is attached
cient clearance is provided for forward extension of theVV
to a U-shaped cross bar 93 of angle iron suspended at
bed bottom.
»
I
I
each side of the bed bottom 15 by a stra-p 95 which is 65
Accomplishment of these functions is achieved by pro
»fixed to the cross bar 93 and is pivotally connected at its
portioning each spring 111 so that when the spring is
upper end to the connecting section 51 of the bed bottom.
not under tension, its turns are in contact with one an-y
Also pivotally connected to the cross bar 93 is a link 99
other and it has a fixed length, thereby enabling its use
which, at its outer end, is pivotally connected to the leg
as a thrust member for initiating the unfolding move
59 mounted’on the outer section.
70 ment of the- front board. This occurs when thedevi'ce
In addition to serving as a component ofthe ,leg con
1s in the partially unfolded condition, as shown generally
trolling linkage .and serving to cross rigidify the bed bot
tom 15, the cross bar 93 alsoserves to carry the'control
in FIGURE 3. When the bed bottom 15 moves-from the
position shown in FIGURE 3~to~its fully-folded con
link 81 of therlocking mechanism 77 and to lock the
dition, thereby swinging the torque tube 71»>` rearwardly
folding front board 13 in its closed upright position when 75 and downwardly, each spring 111 pulls the. front boardÃ
aar/asie
5
into upright position and becomes a tension spring for
esiliently holding the folding front board 13 in its up
right condition. On the other hand, as the support arms
67 rock forwardly from the position shown in FIP
URE 3 incident to additional movement of the bed bot
tom toward its extended condition, one or more of the
springs lll is converted to a thrust member which pushes
the hinged front board 13 forwardly to initiate its open
n
handle (not shown) extending upwardly from the cross
bar 93 through the adjacent fabric. Initial unfolding
movement of the bed bottom to the partially unfolded
balanced condition shown in FIGURE 3 is aided by the
spring sets 73, and results in withdrawal of the cross bar
93 from between the arms T19 and the hinged front
'board i3, and also causes a generally upwardly and for
ing movement and to cause continued forwardly swing
ing movement under the influence of gravity. This latter
movement of the hinged front board acts to again extend
the springs lll, notwithstanding some additional forward
wardly swinging movement of the torque tube transversely
interconnecting the support arm 67. As previously men
tioned, this movement of the torque tube relaxes the
springs lli to their normally close wound condition,
thereby making the springs available as thrust members.
movement of the torque tube 7l.
Continued outward movement of the bed bottom 15 is
As the front board
approaches a generally horizontal open position, the in
creasing tension in the springs 111 arrests further swing
ing movement of the hinged front board i3. in the hori
zontal position shown in FlGURE 2, ample clearance
is provided between the hinged front board lâ and the
outwardly moving bed bottom l5 to permit its unhindered
extension to the bed-forming condition.
20
accompanied by a generally forward movement of the
torque tube 71, thereby, with the cooperation of the rela
tively axially rigid springs H1, thrusting the hinged front
board i3 forwardly from its upright closed position.
After initial displacement of the front board from its
closed position, the force of gravity causes continued for
ward and outward swinging of the front board until there
- e utilization of normally close wound, helical tension
is ample room available for the downwardly swinging
springs 111, which springs are ñexibly resilient under ten
sion but relatively axially rigid when relaxed to facilitate
the transmission of a forward thrust, permits simple and
eñective accomplishment of coordinated front board and
bed bottom movement without necessitating close and ex
intermediate bed bottom section 49 and the associated
linkages.
e accompanying forward movement of the
anchors H3 secured to the front board 13 causes re
newed extension of the springs lll, thereby arresting out
its upright position.
ward swinging movement of the hinged front board when
in a generally horizontal disposition.
Upon return of the bed bottom l5 to its folded condi
tion, the rearward movement of the torque tube 7l acting
through the springs lll-l overcomes the force of gravity
and rocks the hinged front board i3 back into its closed
position. in this connection, it will be noted that during
closing movement of the hinged front board i3, its rela
tion to the bed bottom 1S lags somewhat behind their
relation during their opening movement. This is due to
the partially tensioned condition of the springs 111 oc
curring during raising of the front board 13 to its closed
upright position; and has the beneficial result of delaying
movement of the hinged front board into its closed up
right position until after movement of the bed bottom
past its balanced center condition shown in ¿EGURE 3,
Alternately, if it is desired to continue the line of the
vinner surface of the arm to the bottom of the sofa bed,
toward its fully folded condition, thereby insuring the
avoidance of any interference with the inward folding
pensive manufacturing tolerance control.
Various arrangements, depending on the style of the
sofa bed, can be employed to hold the hinged front
board 13 upright against the action of the helical springs
1li when the bed bottom l5 is in its fully folded con
dition. în the illustrated design, both the hinged and iixed
front boards 13 and 29 extend for the full length of the
sofa bed, the ends of the hinged front board being
mitered or tapered from the rear when viewed in a hori
zontal section so there is only a single break in the up
holstery at the corner edge 116 (see FIGURE l). Of
course, the underlying frame-work of the sofa bed is pro
vided with a complementary adjacent surface to accom
modate flush receipt of the hinged front board when in
the hinged front board can be terminated in alignment
therewith and any suitable stop can be attached to the
upper end of the front posts l? or to the adjacent portions
of the upholstered frame-work. ln extra length sofa
beds, the hinged front board can be held in its upright
position by either of the arrangements just described.
in a T-cushion design, a pleasing unbroken upholstered
line can be best achieved by extending the hinged front
board rearwardly at its ends to meet the front face of
the foreshortened sofa arm. in this case, the lower edge
of the rearwardly directed end portions of the front board
can be effectively used as a stop against an underlying
portion of the upholstered frame-work to limit rearward
folding of the hinged front board.
Locking of the hinged front board 13 to prevent out
ward displacement from its closed position when the bed
bottom i5 is in its fully folded condition, is accomplished 60
by interlocking engagement between one or more latches
il? secured to the rear of the hinged front board i3,
and the cross bar 93 carried by the bed bottom l5.
Each of the disclosed latches il? constitutes an upwardly
directed arm 119 which is rearwardly odset from the
hinged front board i3 for receipt therebetween of the
cross bar 93 during terminal movement of the bed bottom
into its seat-forming condition. Engagement of the rear
ward surface of the cross ’oar 93 by the arm or arms 119
prevents outward displacement of the hinged front board
when the bed bottom is in its fully folded condition.
in operation, after removal of the seat cushions, the
bed bottom 15 can be easily extended from its fully folded
condition (FEGURE 4) to the bed-forming condition
movement of the bed bottom. As the bed bottom ap
proache its fully folded condition, the cross bar 93 enters
between the arms El?" of the latch and the rear face of
the hinged front board i3 to prevent opening of the latter
without accompanying unfolding of the bed bottom.
Various features of the invention are set forth in the
appended claims.
What is claimed is:
i. A sofa bed comprising a stationary sofa frame, a
bed bottom movable between a folded seat-forming posi
tion and an extended bed-forming position, a linkage in
terconnecting said bed bottom and said sofa frame and
including an element movable relative to the frame, said
linkage supporting said bed bottom and facilitating move
ment thereof between its folded and its extended posi
tions, a front board hinged to said frame for movement
` etween an upright closed position when said bed bottom
is in its folded position and an open, forwardly extend
ing position when said bed bottom is in its extended posi
tion, and a helical spring linking said movable element
and said front board to cause positioning of said front
board as an incident to movement of said bed bottom,
said spring being proportioned and positioned so as to
establish a tensioned condition therein when said bed
lbottom is in said folded position, thereby biasing said
movable front board to its closed position, and being
proportioned and positioned so that the initial part of the
movement of said linkage accompanying opening of said
bed bottom to its extended position acts to relieve the
tension in said spring and to thereby convert said spring
into a thrust member which operates, incident to con
(FIGURE 2) by an upward force applied through a 75 tinued linkage movement accompanying opening of said
Y spaanse
t
î
,
bed’bottom to its extended position, to cause movement
of saidùontboard toward its open position.
¿2. YA -sofa bed comprising a V,stationary sofa frame, a
bed bottom -movable between afolded seat-forming posi
tion, and an extended bed-forming position, a linkage
interconnecting said bed bottom and said sofaframe and
including .an velement movable relative to the frame, said
8
against said stopmeans), each being yproportioned so that
the initial part of the movement of said linkage accom
panying opening of said bed bottom to its extended posi
tion acts to allow return of said spring'to its relaxed close,
wound condition for utilization as a thrustY member which,
mcÍdent to `continued _linkage movement accompanying
opening of said bed bottom, initially displaces'saidupper
v front board forwardly from its generally upright closed _po
sition, whereafter the force of gravity causes continued
ment thereof between its folded and 'its extended posi
tions, atfront board 'hinged to said frame for movement 10 forward rocking Vof said upper front board, and each‘being
proportioned >so that continued forward rocking Vof said
between aV generally upright'clos'ed position when said
upper front' board causes renewed extensionl thereof,
lbed bottom is in its folded position and a forwardly ex
thereby
balancing the force of gravity and "determining
tending open position when said bed bottom is in'its
the disposition of said upper front board when in its open
extended position, .stop means on Ysaid frame for pre
venting movement of said front board Vrearwardly of its 15 position, said ,upper> front board and said cross member
having interlocking means engageable incident to move
upright closed position, and anormally close wound heli
ment of Ysaid bed 'bottom into its folded position when
cal .spring linking vsaid element and said front board to
_said Yupper front board is' in its closed position to thereby
cause positioning of said front board as an incident to
prevent displacement -of said upper frontvboard from said
movement of said bed bottom, said Vspring being propor
20
tioned andk positioned to establish a tensioned condition
4.*A sofa bed comprising a stationary sofa frame, a
therein when said bed bottom is in said folded position,
b_ed bottom movable between a` folded seat-forming posi
thereby >biasing said upper front board against said stop
Ktion andan extended bed-forming condition, said bed
means, and being proportioned and positioned so that
bottom comprising aplurality of interconnected sections
Vtheîinitial part of Vthe movement of said linkage accom
with one of said sections having‘a- cross member d'sposed
panying opening oftsaid bed bottom to its extended posi
along the front of said'sofa bed'when said bed bottom
tion acts to return said spring to its normally close wound
is in its folded condition, a ’bed'_bottom supporting link
.condition enabling utilization thereof as a thrust mem
age ,interconnecting said bed bottom and said sofa frame
ber which, incident to continued linkage movement ac
and facilîtating movement of said bed bottom between
companying opening ofvsaid bed bottom, initially rocks
its
folded position` and _its extended position, a front
30
said Vfront board forwardly from its generally upright
board hinged to said frame for Amovement betweenfa
closed position, whereafterthe force ofgravity causes con
closed position when.` said lbedvbottom is in its folded po
>tinued forward rocking -of said front board, and being
sition'
and an open positîon when jsaid bed bottom is in its
Yproportioned .and positioned `so Athat continued forward
extended
position, the rearward surface of the upper edge
rocking fof said 4.front board causes renewed extention of
portion of said front board being positioned adjacent said
linkage supporting said bed bottom and facilitating move- '
_closed
,said spring, thereby balancing the force of gravity and
position..
l
y
_ "
"
y
'
determining the -disposition _of said front board when in
YYits open position.l
fcross member when-said bed bottom is in its folded `posi
tion, a helical springextending between said bed «bottom
!forming condition, saidibed bottom comprising a plurality
direction of said crosrsrmember when said bed bottom is
in its folded'positiom and a bracket projecting from lthe
supportinglinkage and said front board, said helical spring
V3. A_sofa bedcomprising` a stationary sofa frame with
beingtdisposed- so as to assume a condition of tension and ì
.-a lower fixed frontA board, a bed bottom movable between
urge'the'upper’ edge portion of said 'front board in theV
40
a Vfolded >seat-forming position Yand Van extended bed
6of interconnectedsections with one. of said sections hav
_ing a cross member disposed along the `.front of said Ísofa
-bed when said bed bottom is in its folded condition, a
Vf-bed bottom .supporting linkage interconnecting the re
Às'pectivesides of said bed bottom and said sofa frame and
Vfacilitating movement of said bed-bottom between its
«folded position and its extended position, said/linkage in
cluding a cross element movable relative to _said frame,
an upper front board hinged to the upper edge of said 50
Vrlower front >board -for movement between a generally
Vvertical closed .position when said bed bottom is -in Vits
,foldedpposit'ontandvan open forwardly extending position
vrearward surface of said front board engageable with said
cross member as said bed bottom ,reaches its folded posi
tion and when said front board is in its closed position to
thereby prevent dispiacement of vsaid front board from
>said closed position.
References Cited inthe ~tile of this patent
UNITED .STATES P‘ATÍENTSA Y '
1,093,565
Schulte _,___„.__.t.§__.___-_ Apr. 14, 1,914
1,288,529
1,359,027
De Does ____ _..Y_..,___v__n_ Dec. 24, 1918
’Bryld .... ______,_,___,_____ -Nov. 16, -1920
Jwhenfsaidbed bottomis in its lextended position, vstop
1,886,081
means Von saidßframe -tforppreventing movement of said
V2,345,624
iPaladino ___,____-_,___,____,_ Apr. 4,V _1944
`front board» rearwardly of its upright closed positiomand
three transversely spaced, normally close .wound helical
2,595,038
Woller _____,_____,
2,749,559
Petersen __,_,_.._,_
>springs .connecting said cross element andY said upper
ffront board `to cause positioning of said upper front
‘2,785,415
2,817,100
1957
1957
sioned condition therein when said bed bottom is in said
` 778,965
France ______ _., ________ __ Ian. 5, 1935
board as kan incident to movementof said bed bottom, 60
, said ysprings each „being proportioned to _establisheda ten
folded position, thereby .biasing nsaid upper front board
Caldemeyer ‘__
____ Nov. ¿1, 1932
„___ Apr. 29, 195,2
n vJune 12, >1956 Y
Документ
Категория
Без категории
Просмотров
0
Размер файла
913 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа