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Патент USA US3053585

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sept. 11, 1962
M. F OX
ROCKER FIXTURE
Filed Jan. 5, 1961
3,053,570
Sept. 11, 1962
M. FOX
3,053,570
ROCKER FIXTURE
Filed Jan. 5, 1961
3 Sheets-Sheet 2
Sept. 11, 1962
M. FOX
3,053,570
ROCKER FIXTURE
Filed Jan. 5, 1961
5 Sheets-Sheet 3
United States Patent Office
1
3,053,570
ROCKER FIXTURE
Martin Fox, Chicago, Ill., assigner to The Seng Company,
a corporation of Illinois
Filed Jan. 5, 1961, Ser. No. 80,899
16 Claims. (Cl. 297-263)
3,053,570
Pafented Sept. 11,> 11362`>
2
the rocker members 14 for resiliently resisting rocking
movement and urging the chair to an upright position.
Means are provided for »interlocking the rocker members
14 and the base 13, and for limiting the arc of backward
and forward rocking movement of the rocker members
on the base. In the illustrated embodiment these means
include abutments 16 on the base 13 overlying and selec
This invention relates to a rocker fixture, and more
particularly to a platform chair rocker 'fixture and a rocker
component thereof.
A primary object of this invention is to provide a rocker
fixture having a rocker member supported in a simple
and effective manner for limited rocking movement on a
base.
Another object of this invention is to provide a rocker
fixture having a rocker member with l»an arcuate flange
supported for rocking movement on a base having an
abutment overlying a part of the rocker member, and
preferably the arcuate flange, to limit the rocking move
ment of the rocker member on the base.
Still another object of this invention is to provide a
platform rocker fixture having a »sheet metal base with
tively engaging part of the rocker members, and specifi
cally arcuate flanges 17 on the rocker members 14. These
three portions of the rocker fixture 10 may take various
forms and be arranged in numerous different ways and the
invention will be herein described as applied to a preferred
embodiment thereof.
Referring to FIGURES 1, 3 or 5 of the drawings, the
chair platform 11 includes a swivel iron 18, which may
be of any suitable construction, and has a bottom plate
18a connected, as by rivets or bolts, to downwardly ex
tending legs 19. Rotatably mounted on the bottom plate
by a center pin 18h is a turntable plate 18C which in the
20 present embodiment has integrally formed Itherewith the
rocker fixture base 13. Easy rotation ofthe turntable plate
18e is provided by ball bearings in a race formed by co
operating circular grooves in the bottom plate 18a and
laterally spaced upright, confining flanges, a pair of rocker
turntable plate 18C.
members having upright webs with arcuate flanges extend
ing transversely from lower portions thereof and support 25 Base 13 has a horizontal body or web 20 with the
ed on the base adjacent the confining flanges, with abut
upper ball race groove formed therein. Upright, parallel,
confining flanges 21 are integral with and laterally spaced
ments on the confining flanges overlying the arcuate flanges
from each other on opposite sides of the web 20, for
to limit rocking movement of the rocker members thereon,
and means urging the rocker members to a predetermined
centered position.
A further object 0f this invention is to provide a rocker
member having flanges extending in opposite directions
limiting lateral movement o-f the rocker member as Will
The abutments 16 are prefer
30 be apparent hereinafter.
ably in the form of inwardly extending protrusions inte
gral in the upright confining flanges 21, each overlying
from a web, and one of the flanges being arcuate and hav
an opposite arcuate flange 17 of the rocker arms 14, and
ing a convex outer face.
deñning stops which concomitantly engage the respec
A still further object of this invention is to provide 35 tive arcuate flanges to limit rocking movement of the
a sheet metal rocker member having a web with opposite
ends, `a flange on each of the ends, the flanges extending
in opposite directions from the body, a first of the flanges
being arcuate with a convex outer face, and means on a
chair 12 back and forth on the chair platform 11. 'I'he
spacing between the inner extremities of the abutments
16 is less than the corresponding spacing between the outer
extremities of the arcuate flanges 17 adjacent the abut
second of the flanges for attaching the rocker member to 40 ments so that rocker members 14 are thereby retained on
a chair.
A preferred embodiment of the invention is illustrated
in the accompanying drawings, in which:
the base 13 and cannot be vertically lifted therefrom or
rocked so far `as to tip off the base. Extending upwardly
from opposite end edges of the base web 20 are inwardly
curved reinforcing flanges for strengthening the base.
FIGURE 1 is a fragmentary end view of a platform
rocker in which a platform rocker fixture is attached be 45 The base 13 may be of any suitable material and in the
tween :a platform base and a chair;
illustrated embodiment is preferably of sheet metal, such
fFIGURE 2 is a ‘fragmentary plan view with the chair
removed for clearer illustration;
as sheet steel.
trating the platform rocker in the upright position;
'FIGURE 4 is a fragmentary, enlarged, perspective View
or mounting flange 23 extends inwardly. The mounting
flanges 23 have means in the form of holes receiving suit
able fasteners, such as bolts, for attaching the respective
As best seen in FIGURE 7, each rocker member 14 has
IFIGURE 3 is a fragmentary vertical side section taken
-an upright web 22 from the bottom of which arcuate flange
substantially along the line 3_3 of FIGURE 2, illus 50 17 extends outwardly, and from the top of which a second,
of a portion of a base of the platform rocker fixture;
FIGURE 5 is a fragmentary, vertical side section,
rocker members to the bottom of the chair 12. Third
similar to FIGURE 3, but illustrating the platform rocker 55 flanges 24 extend upwardly from the inner ends of the
in an inclined position;
second flanges 23.
FIGURE 6 is a fragmentary, enlarged, vertical section
Cooperating means on the second and third flanges, in
taken substantially along the line 6-6 of FIGURE 2; and
the form of slots 24a, bosses 25, and tabs 26, anchor
FIGURE 7 is an enlarged perspective view of a rocker
member of the platform rocker fixture.
In the embodiment illustrated in the drawings, a plat
adjacent ends of the spiral springs 15 to the rocker mem
60 bers 14.
Anchoring of the lower ends of the springs 15
is provided by similar means of inverted dish-shaped mem
form rocker fixture 10 is positioned between a suitable
bers 27 attached to the web 20 of base 13 in any suitable
chair platform 11 and a chair 12, for rocking movement
manner, for example, by fasteners such as rivets or bolts
of the chair back and forth on the platform.
28. The means for anchoring fthe ends of the springs
The rocker ñxture 10 includes three main portions.Y 65 to the base 13 `and rocker members 14 have been but
One portion is a base 13 secured to the chair platform 11
briefly described because a full disclosure may be had by
in any suitable manner. rifhe sceond portion is in the form
reference to my prior United States Patent 2,871,916.
of a pair of rocker members 14 lsuitably secured to the
In addition to normally maintaining the chair 12 in an
chair 12 for free rocking movement of the chair through
upright position, and the rocker members 14 in a pre
70
a substantial are, on the platform. The third portion com
determined centered position, the springs also tend to
prises spiral springs 15 received between the base 13 and.
maintain the rocker members, and therefore the chair,
3,053,570
3
centered on the base 13. Lateral retention of the rocker
fining stops for engaging respective arcuate flanges to
members 14 and chair 12 on the base 13 is further as
sured by the confining flanges 21 of the ‘base which
limit rocking movement of said chair on said platform,
the spacing between inner extremities of said protrusions
adjacent said confining flanges for free rocking move
tions, the flanges extending transversely in opposite di
being less than the corresponding spacing between outer
may abut the outer edges of the arcuate flanges 17.
The rocker members 14 may be of any suitable material 5 extremities of said arcuate flanges adjacent said protru
sions for retaining said rocker members on said base; sec
and in the preferred embodiment are preferably of sheet
ond flanges extending transversely inwardly from said
metal, such 4as sheet steel, in keeping with the material
rocker webs and spaced upwardly of said arcuate flanges,
of the base 13.
said second flanges having means for attaching said rocker
The foregoing detailed description is given for clearness
of understanding only and no unnecessary limitations are 10 members `to said chair; third flanges extending transversely
upwardly from said second flanges; pairs of spiral springs
to be understood therefrom, as some modifications will
for each of said rocker members, opposite ends of the
be obvious to those skilled in the art.
springs of each pair engaging the respective second flange
I claim:
and said base for urging said chair into an upright posi
1. A rocker fixture for furniture, comprising: a base
tion; cooperating means on each of said second and third
having laterally spaced confining flanges; a pair of rocker
flanges anchoring adjacent ends of said springs on respec
members having arcuate flanges supported on said base
tive rocker members; and means anchoring adjacent ends
adjacent said confining flanges for free rocking move
of said springs on said base.
ment through a substantial arc; and an abutment on said
6. A sheet metal rocker member for furniture, com
base overlying and selectively engaging at least one rocker
member for limiting the arc of rocking movement of said 20 prising: a web; flanges extending transversely from said
web in opposite directions, one of said flanges being arcu
rocker members.
ate and having a convex outer face.
2. A rocker fixture for lfurniture, comprising: a base
7. A rocker member comprising: a web having op
having laterally spaced confining flanges; a pair of rocker
posite edge portions; a flange on each of said edge por
members having arcuate flanges supported on said base
ment through a substantial arc; abutments on said base
rections from said web, a first of said flanges being arcuate
overlying and selectively engaging said rocker members,
said confining flanges limiting lateral movement of said
with a convex outer face; and means on a second of said
flanges for attaching said rocker member to a chair.
8. A sheet metal rocker member for attachment to
rocker members and said abutments limiting the arc of
rocking movement thereof; and means urging said rocker 30 furniture, comprising: a web having opposite edge p0r
tions; a flange on each of said edge portions, the flanges
members to a predetermined centered position.
3. A platform rocker fixture for furniture, compris
ing: a base having laterally spaced upright confining
flanges; a pair of rocker members having upright webs
with lower portions; arcuate flanges extending transverse
extending transversely in opposite directions from said
web, a first of said flanges being arcuate and having a
convex outer face, a second of said flanges having means
for attaching said rocker member to said furniture; a
third flange on said second flange and extending there
from in a direction generally away from said first flange;
on said base adjacent said confining flanges; abutments
and cooperating means including said second and third
on said confining flanges overlying and selectively engag
flanges for anchoring a spring.
ing said arcuate flanges, said confining flanges and said
9. A rocker ñxture for furniture, comprising: a base
abutments limiting lateral and rocking movement of said 40
having laterally spaced confining flanges; a pair of rocker
rocker members; second flanges on said webs spaced from
members each having a web and flanges extending trans
said arcuate flanges; and spiral springs anchored on said
versely from said web in opposite directions, one of said
second flanges and said base for urging said rocker mem
flanges of each rocker member being arcuate and having
bers to a predetermined centered position.
ly from said lower portions of said webs and supported
4. A platform rocker fixture for furniture, comprising:
a chair platform adapted to be received on a floor, said
a convex outer face supported on said base, the arcuate
flanges being located, one adjacent each of said confining
flanges; and an abutment on said base overlying and selec~
tively engaging at least one rocker member for limiting
rocking movement of said rocker members.
flanges; a pair of laterally spaced, parallel rocker mem
10. A rocker fixture for furniture, comprising: a base
bers for attachment to the bottom of a chair, said rocker 50
having laterally spaced confining flanges; a pair of rocker
members having arcuate flanges supported on said base
members each having a web and flanges extending trans
adjacent said confining flanges; abutments on said con
versely from said web in opposite directions, one of said
lining flanges and overlying and selectively engaging said
flanges of each rocker member being arcuate and having
arcuate flanges, said confining flanges and said abutments
a convex outer face supported on said base, said arcuate
limiting lateral and rocking movement of said rocker
flanges being located, one adjacent each of said confining
members; second flanges on said rocker members; and
flanges; means on a second of each of said rocker member
springs anchored on said second flanges and said base for
flanges for attaching said rocker member to a part of the
urging said chair into an upright position.
furniture; abutments on said base overlying and selectively
5. A platform rocker fixture for a chair, comprising:
chair platform having a portion in the form of a base,
said base having laterally spaced, parallel, confining
a chair platform adapted to be received on a floor, said 60 engaging said rocker members, said confining flanges and
abutments limiting lateral and >rocking movement of said
chair platform having an upper portion in the form of a
sheet metal base, said base having laterally spaced, paral
lel, upright confining flanges; a pair of laterally spaced,
rocker members; and means urging said rocker members
to a predetermined centered position.
11. A rocker fixture for furniture, comprising: a base
parallel, sheet metal rocker members adapted to be at
tached to the bottom of said chair, said rocker members 65 having laterally spaced confining flanges; a pair of rocker
members each having a web and flanges extending trans
having upright webs with lower portions; arcuate flanges
extending transversely outwardly from said lower por
versely from said web in opposite directions, one of said
flanges of each rocker member being arcuate and having
tions of said webs and having convex outer faces supported
on said base for rocking movement of said chair on said
a convex outer face supported on said base for free rock
platform, said arcuate flanges being `adjacent and inward
of said confining flanges for limiting lateral movement of
said rocker member on said base; inwardly extending pro
trusions integral in said confining flanges and overlying
and selectively engaging respective arcuate flanges and de 75
ing movement of the rocker members through a substan
tial arc, said arcuate flanges being located between said
confining flanges, and one adjacent each of said confining
flanges; means on a second of each of said rocker mem
ber flanges for attaching said rocker members to a part
3,053,570
6
of the furniture; abutments on said base overlying and
ñanges for resisting rocking movement and urging said
selectively engaging said rocker members, said conñning
rocker members to a predetermined centered position.
16. A rocker fixture for furniture comprising: a base
ñanges limiting lateral movement of said rocker members
having opposed spaced apart margins and a pair of con
and said abutments limiting the arc rocking movement of
said rocker members; and springs between said confining 5 ñning flanges extending outwardly in the same direction
from said margins; a pair of rocker members having
flanges urging said rocker members to a predetermined
centered position.
arcuate flanges with convex outer -faces supported on said
base between said confining ñanges for rocking movement
12. A sheet metal rocker member for furniture, com
prising: a web; flanges extending transversely from said
through a substantial arc, said flanges extending out
web, one of said ñanges being arcuate and having a convex 10 wardly in opposite directions from the respective webs and
outer face.
toward the adjacent confining flange; spiral springs be
13. A rocker member comprising: a web having op
posite edge portions; an arcuate flange on one of said edge
portions, said ñange having a convex outer face; and
tween said rocker members and seated between said rocker
members and base resiliently resisting rocking movement
chair.
14. A rocker fixture for furniture comprising: a base
members for limiting the arc of rocking movement of said
having laterally spaced confining flanges; a pair of rocker
rocker members.
and urging said rocker members to a predetermined cen
means comprising a second flange on the other edge por 15 tered position; means for attaching said rocker member
to the furniture; and abutment means on said conñning
tion of said web for attaching said rocker member to a
ñanges overlying and selectively engaging said rocker
members having arcuate flanges with convex outer faces 20
References Cited in the ñle of this patent
UNITED STATES PATENTS
supported on said base between said confining ñanges for
rocking movement of said members through a substantial
arc; and resilient means between said confining flanges
urging said rocker members to a predetermined centered
position.
25
15. A rocker `fixture for furniture comprising: a base
having laterally spaced conlining ilanges; a pair of rocker
members having arcuate ñanges with convex outer faces
supported on said base between said coniîning ñanges for
rocking movement of said rocker member through a sub 30
stantial are; and resilient means between said conñning
`1,154,021
Hunzinger ___________ __ Sept. 21, 1915
1,244,389
2,096,437
Stockwell ____________ _.. Oct. 23, 1917
Potter _______________ _- Oct. 19, 1937
2,625,983
Slyter et al. ___________ __ Jan. 20, 1953
2,871,916
2,959,210
Fox __________________ __ Feb. 3, 1959
Pearlstine ____________ __ Nov. 8, 1960
617,530
Germany ____________ __ Aug. 21, 1935
FOREIGN PATENTS
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