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Патент USA US3091460

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May 28, 1963
3,091,450
ì c. s. REED
SUPPORTING SPRING ASSEMBLY FOR SEATS
_ 5 sheets-sheet -1
Filed April 6. 1962
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6o INVENTOR. /6
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BY
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May 28, 1963
3,091,450
C. S. REED
SUPPORTING SPRING ASSEMBLY FOR SEATS
Filed April es.y 1962
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May 2s, 1963
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3,091,450
SUPPORTING SPRING ASSEMBLY FOR SEATS
Filed April 6, 1962
5 Sheets-Sheet 5
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May 28, 1963
3,091,450
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SUPPORTING SPRING ASSEMBLY FoP SEATS
Filed April 6, 1962
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INVENTOR.
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5. REED
May 28, 1963
3,091,450
c. s. REED
SUPPORTING SPRING ASSEMBLY FoR SEATS
5 Sheets-Sheet 5
Filed April 6, 1962
6°
22 2o
INVENTOR.
cav/A’ s. A’ffo
BY
/ú/¿ZZÁ’W MQ?
A TTOR/VEYS
United States Patent Otiice
2
1
3,091,450
SUPPDRTIN G SPRING ASSEMBLY FOR SEATS
Clair S. Reed, Wayne, Mich., assigner to Van Dresser
Specialty Corporation, Warren, Mich., a corporation of
Michigan
Filed Apr. 6, 1962, Ser. No. 185,543
18 Claims. (Cl. 267-86)
This invention relates generally to upholstered spring
structures, and refers more particularly to an improved
supporting spring assembly for seats.
3,091,450
Patented May 28, 1963
FIGURE 8 is a top plan view of the modified lower
layer shown in FIGURE 7.
FIGURE 9 is a top plan view of another modification
wherein a wavy length of spring «wire is between `and con
nected to the rear border wire of the upper layer and the
rear longitudinally extending member` of the supporting
frame.
FIGURE l0` is »an enlarged fragmentary cross` sectional
view through a portion of the structure illustrated in
FIGURE 9.
FIGURE 1l is a perspective view of an upholstered
assembly provided with -a slightly modified spring struc
One of the essential objects of the invention is to pro
ture wherein the longitudinally extending front border
vide an improved supporting spring assembly wherein
wire of the lower layer is connected by clips to the inter
two spring wire reinforced composite layers arranged in
superimposed relation have been substituted for the usual 15 mediate longitudinally extending arms of the formed Wire
separate wire reinforced fabric insulators and their sepa
rate wire ‘or spring supports.
springs.
4FIGURE l2 is an end view of the spring structure and
supporting frame therefor illustrated in FIGURE >1l.
Referring now to the drawings, 10‘ is a supporting
spring assembly wherein each layer includes reinforcing
wires of suñicient strength to serve as spring supports. 20 frame having laterally spaced front and rear longitudi
nally extending members 11 and 12 respectively and hav
Another object is to provide an improved supporting
Another object is to provide an improved supporting
spring assembly wherein each layer includes border wires
ing longitudinally spaced transversely extending mem
bers ‘13 and 14 respectively extending between and secured
to said longitudinally extending members 11 and 12 at
Another object is to provide an improved supporting
spring assembly wherein the reinforcing lwires aforesaid 25 opposite ends thereof. Preferably the longitudinally ex
tending members 11 and 12 are hollow land are substan
are threaded through fabric in either sheet or strip form
tially rectangular shape in cross section. The bottom
and are terminally connected to said border wires.
walls 15 and :16 respectively of said longitudinally eX
Another object is to provide an improved supporting
tending members 11 and 12 are flat and extend beneath
spring assembly wherein the upper of the two spring
Wire reinforced composite layers is preferably arched 30 the inner side walls 17 and 18 thereof. Such iiat bottom
walls 15' and 16 have extensions 19 and 20 that project
upwardly throughout its length and serves as a support for
laterally inward beyond the inner side lwalls 17 and 18
the upholstery, such as the usual cotton layer, sponge
and are provided adjacent their inner edges with longi
rubber layer, and exterior trim material.
tudinally spaced holes or openings 21 and 22. The inner
Another object is to provide an improved supporting
side walls 17 and 18 of said longitudinally extending
spring assembly wherein the lower of the two layers is
members 1‘1 and 12 have lateral iianges 23 and 24 that
preferably arched upwardly throughout its length toward
which are suitably anchored to «a supporting seat frame.
and serves as a booster for the upper layer to provide the
latter with a spring support when subjected to compres
sion and to provide a soft cushioning movement for the
rest upon and are secured to the inward extensions 19
and 20.
Z5 and 26 respectively are two spring wire reinforced
upper layer.
Another object is -to provide an improved supporting
spring assembly wherein the lower booster layer may be
extending longitudinally of and anchored to the support
either secured or in spaced relation to the upper layer.
composite layers arranged in superimposed relation and
ing frame 10 at the front and rear thereof for supporting
the usual upholstery of the seat.
Preferably the upper layer 25 can be used ‘alone or
Another object is to provide an improved supporting
spring assembly that is simple in construction, economi 45 with a bottom layer 26, las desired. Such upper layer l25
cal to manufacture, and durable in use.
Other objects, advantages and novel details of construc
tion of this invention will be made more apparent as this
comprises ia lsubstantially rectangular sheet 27 of fabric,
»a substantially «rectangular lborder frame 28 upon one side
-of and centered relative to said sheet 27, and ylongitudi
nally spaced transversely extending reinforcing wires 29
description proceeds, especially when considered in con
50 threaded through the sheet 27 and terminally connected
nection with the accompanying drawings wherein:
-to :opposite longitudinally extending sides 30 and 31 re
spectively of the border frame 28. The sheet 27 of
fabric may be burlap or yany other suitable material. The
border frame 28 is preferably covered or wrapper with
ÍFIGURE 2 is a fragmentary top plan View of the sup
porting frame and of the vertical coil springs at opposite 55 paper 3.2 tand m-ay be any desired shape and of any gauge
steel to provide the proper strength. The reinforcing wires
ends thereof.
A29 rn-ay be helical, spiral, sinuous, or undulated or straight,
FIGURE 3 is »an end view of the spring structure and
ias desired, :and of any `gauge spring steel or other suitable
supporting frame therefor.
material consistent with resiliency and the strength re
FIGURE 4 is a top plan view of the upper layer before
60 quired to serve as spring supports. Such reinforcing wires
being applied to the supporting frame therefor.
29 may ëbe spaced longitudinally apart `as -`desired and may
FIGURE 5 is a top plan view of the lower layer before
be light gauge at opposite `ends `and heavy gauge at the
being applied to the supporting frame therefor.
center of the supporting frame 10, `or vice versa depend
FIGURE 6 is an end view of a slightly modified struc
ting upon the requirements.
ture wherein the arched portions of the upper and lower
The lower layer Z6 comprises ‘a substantially rectan
65
layers are spaced apart.
FIGURE 1 is a perspective view of an upholstered
assembly provided with a spring structure embodying my
invention, and showing parts broken away and in section.
FIGURE 7 is an end view of another modiñcation
wherein the lower layer includes three laterally spaced
longitudinally extending strips of fabric, border wires,
gul-ar sheet 33 of fabric, two separate transversely spaced
longitudinally extending front -and rear border wires 34
and 35 respectively upon one side of »and centered rela
tive to said sheet 33, and longitudinally spaced transversely
ing Wires threaded through the strips and terminally con 70 extending reinforcing wires 36 threaded through the sheet
and longitudinally spaced transversely extending reinforc
nected to the border wires.
33 ‘and terminally connected to said -border wires 34 and
3,091,450
3
4 .
35. The sheet 33 of fabric may be burlap or any other
suitable material `and ‘holds the spaced reinforcing wires
36 in proper spaced relation to each `other and to the
`front yand rear border wires 34 and 35. The two separate
longitudinally extending bord-er wires 34 and 35 maybe
covered vor wrapped lwith paper 37 `‘and may be any de
sired shape and of any gauge spring steel or other suit
able material to provide the proper strength. The rein
supporting frame 110 and to the lower layer 26 inter
mediate the front and rear thereof Áto support the lower
and upper layers 26 :and 25 respectively at opposite ends
‘of the supporting frame.
‘A
The 4arched portion 63.0fthe lowe-r layer 26 serves as
:a booster for the arched portion 64 of the upper layer 25
to provide such upper layer with a spring support when
subjected to compression and to provide -a soft cushion
ing movement for the upper layer 25. The arched portion
dulated >or straight, as desired, and" lof any Igauge spring 10 63 of the `lower layer 26 causes the arched portion 64 ot
met-al consistent with resiliency and the strength required
the upper layer 25 to return to its original arched posi
to serve »as spring` supports. Such reinforcing wires 36
tion after .the latter has been relieved of »a load. Prefer
may be spaced longitudinally apart as desired and may be
ably, the arched portions 64 and V63 respectively 'of the
forcing wi-res 36 Vmay be helical, spiral, sinuous, or un
light gauge at ¿oposite ends and heavy gauge »at the center
upper and lower layers 25 and 26 are ’securedA together
of the `supporting frame't10, or vice versa, depending upon 15 just to the rear ofthe longitudinal median linel thereof,
the requirements.
however, they may be secured together at any desired
Located at longitudinally spaced points of the front
points thereof. As shown, the arched portions 64 and 63
edge of the upper layer 25 are separately formed wire
respectively of the upper and lower layers 25 and 2_6 are
springs 40 having outwardly opening vertically diver-ging
secured Itogether by adhesive 6,5, however theymay be
arm portions 41,and 4,2.terminating in lower andupper 20 secured together ~by :any other suitable means, such as
longitudinally extending end portions 43 and `44. The
rings, clips, staples and thelilçe.
' I
`
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i '
i
lower end portions 43 of such springs :are anchored in
If desired, the arched portions I64 and 63 respectively
longitudinally »aligned loops 45 Struck out from the top
of the upper and lower layers 25 and 26 may be spaced
wall >46 ofthe front longitudinally extending member v11,
apart as shown in FIGURE 6, so thatthe »arched portion
While .the upper end portions 44 of such springs are se 25 64 of the upper layer-2`5`-may have a limited 'downward
cured by clips 47 to the front longitudinally extending
movement before the arched portion v63y `of the lower
side 30 of the border frame 28 or the upper layer 25, so
layer 26 serves as a booster therefor.
` '
'
that the said front longitudinally extending side 30 of the
border frame of the upper layer 25 is- spaced above the
longitudinally extending member 11.
A
In FIGURES '7 and 8, I have shown a slight modiñca
tion wherein the lower layer 70 comprises three laterally
30 spaced longitudinally extending stripsv 71, 72 and V73 "re
The rear longitudinally extending side y3-1 ofthe border
spectively of fabric, such as burlap, or any other suitable
yframe 28 of the upper layer 25 is -anchored in longitudi
material, two separate longitudinally extending border
nally aligned >substantially U-shaped arms 5K0 that are
wires 74 and 75 respectively extending lengthwise of the
struck out` from and that open toward the inner upright
outermost strips 71 and 73, and longitudinally spaced
wall l-157 ofthe longitudinally extending member |12. The 35 transversely' extending reinforcing lwires 76 threaded
rear longitudinally extending side 314 of the border trame
through the strips 71, 72 and V'73 respectively and terminal'
28 is received in such'U-shaped arms'50' when the latter
ly connected to the'bor'der wires 74 and 75. ` This'lower
are struck out from the inner -upright wall 17 of the
layer 70 may be substituted for the lower layer 25 to serve
longitudinally extending member 12, and are «anchored
as a booster for an upper layerV 77 corespondíng -to> ‘the
-Vin said -arms 50 when the latte-r are pressed toward the 40 upper layer 25. The lower layer 70 is curved upwardly
«inner :upright wall `17~ -of `-the`longitudinally extending
or arched upwardly like the lower layer 26, and the sep
member 12. Preferably, the rear portion 31 of the border
arate border wires 74_ and 75 thereof'are anchored to the
frame 2_8 of the upper- layer 2,5 is anchored first to the U
lateral inward extensions 19 and 20 respectively of the
shaped arms 50, then the upper layer 2‘5 is bent upwardly
longitudinally extending members 1_1 and 12y 'like the
tor »arched under compression, and iìnally the upper layer
25 is anchored to the formed wire springs 40. Thus the
upper layer 25 is arched upwardly throughout its length
and is anchored in such upwardly arched position between
the formed wire springs 40 and the rear longitudinally ex
tending member 12 of the supporting trame 10.V Such
arched upper layer 25 serves as a support for the seat up
bolstery, such as the usual cotton l-ayer, sponge rubber
border wires 34 and 35. i
`
»In FIGURES 9 and l0, I have shown another slight
modiñcation wherein the rear longitudinally' extending
border wire 80 of the upper layer 81 is- spaced from the
rear longitudinally extending member 12 of the support
ing frame 10, and a wavy length 82 of spring wire extends
lengthwise of the space between such rear longitudinally
extending border wire 80 and the rear longitudinally ex
tending member 12. The length 82 of springwire has
The Ilower layer 26 is also :anchored in an upwardly
wavy portions 83 adjacent `and secured to the rear longi
arched position beneath the upper layer y25 to the lateral 55 tudinally extending border wire 80 by means of clips or
inward extensions 19 land 20 of the longitudinally extend
rings 84, and has other wavy portions _85 adjacent and
ing members |11 and >12. As shown, the' longitudinally
secured to the U-shapedl arms 50 struck out from the
extending border wires 34 and 35 of the lower layer rest
inner upright side wall'17 of the rear longitudinally ex
on said extensions 19 and 20 and are secured thereto by
tending member 12. Such length 82 of spring wire pro
clips `60 that embrace such border wires and that extend 60 vides the desired elasticity at Ythe rear of theV supporting
through the holes or openings'Zl and 22 respectively in
layer, and exterior trim of a seat.
`
frame.
the inward extensions 19 and 20.
Preferably the rear
longitudinally extending border wire 35 of the lower layer
`
`
I_n FIGURES 11 and 12, I have shown another slight
modification wherein the longitudinally extending front
border wire 90 of the lower layer 91 is connected by clips
26 is anchored ñrst to the extension 20, then the lower
:layer 26 is bent upwardly or larched under compression, 65 92 to the intermediate longitudinally extending arms 93
and ñnally the front longitudinally extending border wire
»34 is anchored to the other extension 19. Thus the lower
of the separately formed wire springs 94, instead of by
clips 60 to the inward extensions 19`of the flat bottom
walls 15 of the longitudinally extending front member 11.
Otherwise, the structure in FIGURES 10 and l1 'is the
layer 26 is arched upwardly throughout its length and is
anchored in such upwardly arched position between the
inward extensions 19 and »20 respectively of the front and 70 same as that shown in FIGURES l and 3 respectively.
rear longitudinally extending members 11 and 12 of the
supporting fname 10.
Vertical coil springs 61 and 62 respectively extend be
tween and are terminally anchored to the transversely
What I claim as my invention is:
'
' i
‘
l. The combination with a supporting frame having
transversely spaced front and rear longitudinally extend
ing members and end members extending transversely be
extending end members 13 and 14 respectively of the 75 tween and secured to said longitudinally extending mem
3,091,450
bers at opposite ends thereof, of formed wire springs
spaced longitudinally along the front longitudinally ex
tending member, each wire spring having upwardly extend
ing diverging arm portions provided at opposite ends with
longitudinally extending end portions, the lower end por
tion of each of said formed wire springs being secured t0
said front longitudinally extending member, and two longi
tudinally extending spring wire reinforced composite
layers arranged in upwardly transversely arched super
imposed relation upon said supporting frame, the upper
of said two layers including longitudinally extending
6
10. The structure defined in claim l, wherein the longi
tudinally extending upwardly transversely arched lower
layer serves as a booster for the upper layer to provide
the latter with a spring support when subjected to com
pression and to provide a soft cushioning movement for
the upper layer.
1l. The combination with a supporting frame having
transversely spaced front and rear longitudinally ex
tending members, of «formed wire springs spaced longi
10
tudinally along the front longitudinally extending mem
ber, each wire spring having upwardly extending di
verging arm portions provided at opposite ends with
longitudinally extending end portions, the lower end por
tion of each of said formed wire springs being secured
versely extending reinforcing wires of sufficient strength 15 to said front longitudinally extending member, and two
border wires respectively connected to said rear longitudi
nally extending member and to the upper end portion of
each formed wire spring, and longitudinally spaced trans
longitudinally extending spring wire reinforced composite
layers arranged in upwardly transversely arched super
to serve Áas spring supports terminally connected to said
border wires, and the lower of said two layers including
longitudinally extending border wires respectively con
nected to said front and .rear longitudinally extending
imposed relation upon said supporting frame, the upper
of said two layers including longitudinally extending bor
members, and longitudinally spaced transversely extend 20 der wires respectively connected to said rear longitudi
nally extending member and to the upper end portion
ing reinforcing wires of sufficient strength to serve as
of each formed wire spring, and longitudinally spaced
spring supports terminally connected to said last men
transversely extending reinforcing wires of suflicient
tioned border wires.
strength to serve as spring supports terminally connected
2. The structure defined in claim l, wherein the up
wardly transversely arched portions of said two layers are 25 -to said border wires, and the lower of said two layers
including three laterally spaced longitudinally extending
secured together adjacent the longitudinal median lines
strips of fabric, longitudinally extending border wires
thereof.
respectively upon the outermost two of said strips and
respectively connected to said front and rear longitudi
3. The structure delined in claim 1, wherein the up
wardly transversely arched portions of said two layers are
4. The structure defined in claim l, wherein the upper
nally extending members, and longitudinally Ispaced trans
versely extending reinforcing wires threaded through said
of said two layers includes Ia fabric sheet on the underside
strips land terminally connected to said last mentioned
spaced apart.
30
of the border wires thereof, and longitudinally spaced
border wires,
transversely extending Ireinforcing wires threaded through
12. The combination with a supporting Vframe having
said sheet and terminally connected to said border wires. 35 front and rear longitudinally extending members having
5. The structure deñned in claim l, wherein the lower
laterally inward substantially flat extensions, of formed
of said two layers includes a fabric sheet on the underside
wire springs spaced longitudinally along the front longi
of the border wires thereof, and longitudinally spaced
tudinally extending member, each -Wire spring having
transversely extending reinforcing wires threaded through
upwardly extending diverging arm portions provided at
said sheet and terminally connected to said border wires. 40 opposite ends with longitudinally extending end portions,
6. The structure defined in claim l, wherein the upper
of said two layers includes a fabric sheet on the under
side of the border wires thereof, and longitudinally spaced
transversely extending reinforcing wires threaded through
the lower end portion of each of said formed wire springs
being secured to said front longitudinally extending mem
ber, and two longitudinally extending spring wire rein
forced composite layers arranged in upwardly transversely
said upper sheet and terminally connected to said border 45 arched superimposed relation upon said supporting
wires, and the lower of said two layers includes a fabric
frame, the upper of said two layers including longitudi
sheet on the underside of the border wires thereof, and
nally extending border wires respectively connected to
longitudinally spaced transversely extending reinforcing
said rear longitudinally extending member and to the
wires threaded through said lower sheet and terminally
50 upper end portion of each formed wire spring, and longi
connected to the border wires thereof.
tudinally spaced transversely extending reinforcing wires
7. The structure defined in claim l, wherein the rear
of sufficient strength to serve as spring supports termi
longitudinally extending border wire of the upper of said
nally connected to said -border wires, and «the lower of
two layers is spaced from and substantially parallel to
said two layers including longitudinally extending border
the rear longitudinally extending frame member, and a
wires
respectively connected to the laterally inward sub
wavy length of spring wire extends lengthwise of said 55 stantially ñat extensions of said front and rear longi
space, said length of spring wire having wavy portions
adjacent and secured to the rear longitudinally extending
border wire and having wavy portions adjacent and se
tudinally extending members, and longitudinally spaced
transversely extending reinforcing lWires of sufficient
strength to serve as spring supports terminally connected
cured to the rear longitudinally extending member.
to said last mentioned border =wires.
60
8. The structure defined in claim l, wherein the rear
13. The combination with a supporting frame having
longitudinally extending border wire of the upper of said
two 4layers is spaced from and substantially parallel to the
rear longitudinally extending frame member, and spring
laterally spaced `front and rear longitudinally extending
members and having longitudinally spaced transversely
extending members extending lbetween and secured to
means extends lengthwise of said space, said spring means
said longitudinally extending members at opposite ends
having portions `adjacent and secured to the rear longi 65 thereof, of two longitudinally extending spring wire -re
tudinally extending -border wire and having portions ad
inforced composite layers arranged in superimposed re
jacent -and secured to the rear longitudinally extending
lation upon said supporting frame and having laterally
member.
spaced longitudinally extending border Wires, means for
9. The structure defined in claim l, wherein two upright
coil springs respectively extend between and are terminal 70 anchoring the laterally spaced longitudinally extending
border `wires of said two superimposed layers to the
ly anchored to the transversely extending end members of
laterally spaced longitudinally extending frame members,
said supporting frame and to said lower layer inter
mediate the front and rear thereof to support the lower
and upper layers at opposite ends of said supporting
frame.
and two upright coil springs respectively extending be
tween and terminally anchored to the transversely ex
75 tending members of said supporting frame `and to said
7.
8
ing frame and arranged throughout its length in upwardly
transversely arched relatiofnto'the >lower of said two
layers, the lower of saidfft'wo layers being substantially
lower layer intermediate the front andl rear thereof to
support the lower and upper >layers Vat opposite ends of
said supporting frame.
`
"
Y
'
v
14. The combination with a supporting frame having
coextensive with said supporting' frame and arranged
laterally spaced front and rear longitudinally extending
throughout its length in'iûpvvä?dly transversely arched
members, of formed wire springs spaced longitudinally
relation to said supporting fratrie, formed wire springs dis
posed between the front of said upper layer and the front
along the lfront longitudinally extending member, each
wirespring having upwardly extending diverging arm
portions provided at opposite ends with longitudinally
extending end portions and provided at the juncture of
said diverging arm portions with longitudinally- extend
longitudinally extending member of said supporting frame
and having outwardly opening vertically diverging'arrn
10 portions provided with upper and lower longitudinally ex
tending end portions, means securing the upper end 4por
tions of said formed wire springs to the front of said
upper layer, means securing the lower end portions of said
ing arm portions, the lower end portion of each of said
formed wire springs being secured to said -front longi
formed wire springs to the front longitudinally extending
member of said supporting frame, means provided at the
tudinally extending member, and' two longitudinally ex
tending spring wire reinforced composite layers arranged
in upwardly transversely arched superimposed relation
front of the'lower layer for securing said lower layer to
the front Vlongitudinally extending member of said sup
upon said supporting frame, the upper of said two layers
including longitudinally extending border wires respec
porting frame, and means provided at the rear of said
superimposed layers for anchoring such layers to portions
tively connected lto said rear longitudinally extending
member and to the upper end portion of each »formed
wire spring, and longitudinally spaced transversely ex
tending reinforcing wires of sufiicient strength to serve
as vspring supports terminally connected to said border
wires, and the lower of said two layers including longi
20
tudinally extending border wires respectively connected
25
` 17.l The combination with an elongated supporting
frame having vtransversely spaced front and rear longitu
tensíve with said supporting frame, said layers having
transversely spaced longitudinally extending front and
rear> border wires, and longitudinally spaced reinforcing
longitudinally extending member, and longitudinally
cient strength to serve as spring supports terminally
connected =to -said last mentioned border wires.
'
dinally extending members, of two longitudinally extend
ing layers of fabric arranged in superimposed Vupwardly
transversely arched relation upon and‘ substantially coex
to said longitudinally extending arm portions at the junc
ture of said diverging arm portions and >to said rear
spaced transversely extending reinforcing wires of suffi
respectively'of the rear longitudinally'extendin'g member
of said supporting frame.4
30 Wires threaded transversely through saidv fabric layers and
terminally connected to said border wires, formed wire
springs disposed between the front of said upper layer and
the front longitudinally extending member of said sup
l5fThe combination xwith a supporting frame having
laterally spaced front and rear longitudinally extending
porting frame and having outwardly opening vertically
members and having longitudinally spaced transversely
extending members-extending between and secured to
diverging arm portions provided with upper and lower
extending end portions and provided at the -juncture of
said diverging arm portions `with'longitudinally extend
ing arm portions, the lower end portion of each- of said
frame, means securing the rear border wire of said`upper
layer to the rear longitudinally extending memberfofsaid
supporting frame, and means securing the'front and rear
border wires of said lower layer to the front and rear lo'n
longitudinally extending end portions, means securing 'the
said longitudinally extending members at opposite ends
upper end portions of said formed wire springs to the
thereof, of formed wire springs spaced longitudinally
front border wire of said upper layer, means securing the
along the front longitudinally extending member, each
wire yspring having upwardly extending diverging arm 40 lower end portions of said formed wire springs to the
front longitudinally extending member of said supporting
portions provided at opposite ends with longitudinally
formed wire springs being secured to said `front> longi 4,5
gitudinally extending members respectively of said sup
tudinally extending member, and two longitudinally ex
tending spring wire reinforced composite layers arranged
in upwardly 4transversely arched superimposed relation
porting
18. The
frame.
combination with an elongated supporting
‘ l
upon said supporting frame, the upper of said two layers
frame having transversely spaced front and rear longitu
including longitudinally extending border wires respec
dinally extending members, of two longitudinally extend
ing layers arranged in upwardly transversely arched su
perimposed relation upon and substantially coextensive
tively connected tol said rear longitudinally extending
member and to the upper end portion of each formed
wire spring, and longitudinally vspaced transversely ex
tending reinforcing 4wires ‘of sufficient strength to serve
as spring supports terminally >~connected to said border 55
wires, the lower of said tïwo layers including longitudi
the' longitudinallyextending’ arm portions at the junc
ture of said diverging arm portions and to said rear
60
transverselyV extending reinforcing wires of sufficient
ity of laterally spaced longitudinally extending strips of
fabric, longitudinally extending front and rear border
wires respectively extending lengthwise of the outermost
strength to serve as spring supports terminally connected
to said last ymentioned border wires, and upright coil
springs respectively extending between and terminally
.anchored toY the transversely extending members of said
supporting «frame and »to said lower _layer intermediate
said supporting frame, longitudinally spaced transversely
extending reinforcing wires threaded through said sheet of
fabric, and front and rear longitudinally extending border
Wires connected to said -transversely extending reinforc
ing wires, the lower of said two layers including a plural
nally extending border wires respectively connected to
longitudinally extending'rnernber, ’longitudinally spaced
with said supporting frame, the upper of said two layers
includingy a sheet of fabric substantially coextensive with
65
the front and rear thereof to support the lower and
upper layers at opposite ends of Vsaid supporting frame.
V16. The combination with an elongated supporting 70
frame having front and rear longitudinally extending
members, of Ítwo longitudinally extending spring wire re
inforced composite layers arranged in superimposed rela
tion upon said' supporting frame, the upper of said two
layers being substantially coextensive with said support 75
two of said strips, and longitudinally spaced transversely
extending reinforcing wires threaded through said strips
and terminally connected to said last mentioned border
wires, formed wire springs having outwardly opening ver
tically diverging arm portions disposed between the front
of said upper layer and the front longitudinally extending
member of said supporting frame and having upper and
lower longitudinally extending end portions, means con
necting the lower end portions of said formed wire springs
to the front longitudinally extending member of said sup
porting frame, means connecting the front border wire of
said upper layer to the upper end portions of said formed
3,091,450
9
10
wire springs, means connecting the rear border wire of
said upper layer to the rear longitudinally extending mem-
References Cited in the ñle of this patent
UNITED STATES PATENTS
ber of said supporting frame, and means securing the front
and rear border wires of said lower layer to the front and
rear longitudinally extending members respectively of said 5
2,214,136
2,251,049
2,655,204
Hopkes ______________ __ Sept. 10’ 1940
Haberstump __________ __ July 29, 1941
Gould _______________ __ Oct _13, 1953
supporting frame.
27,659,417
l/Handren _____________ __ Nov. 17, 1953
`
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