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Патент USA US3051490

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Aug. 28, 1962
3,051,481
F. JOHNSON
CHILD ’ S TEETER
2 Sheets-Sheet 1
Filed May 3. 1961 '
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F. .JOHNSON
3,051,481
cmLn's TEETER
2 Sheets-Sheet 2
Filed May 5, 1961
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United States Patent Ótiice
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1
FIGURE 6 is a partial sectional View taken through
a plane indicated by section line 6_6 in FIGURE 3.
FIGURE 7 is a sectional view taken through a plane
indicated by section line 7_7 in FIG. 2.
FIGURE 8 is a partial side elevational view of the
3,051,481
CHILD’S TEETER
Fred Johnson, 1925 N. Water St., Decatur, Ill.
Filed May 3, 1961, Ser. No. 107,360
6 Claims. (Cl. 272-54)
teetering device shown in a pivotally displaced position.
Referring now to the drawings in detail, it will be ob
served that the teetering device which is generally re
ferred to by reference numeral 10 is constructed primar
ing devices for children.
A primary object of the present invention is to provide 10 ily of tubular frame members where substantially elon
gated members are required. The teetering device con
a teetering device for children which will accommodate
This invention relates to a teetering device for amuse
ment and exercising purposes and in particular to teeter
sists primarily of a support assembly generally referred
occupants of unequal weight within a predetermined
weight differential enabling the heavier occupant to read
ily apply all of the necessary displacing force in order
to by reference numeral 12 which pivotally mounts about
a fixed axis in spaced relation above the ground, a rock
to rock the teeter or rocking -beam mem-ber.
15 ing beam or teetering assembly generally referred to by
reference numeral 14. A rocking beam displacing mech
Another object of this invention is to provide a teeter
anism generally referred to by reference numeral 16 is
ing device which is particularly adapted for children inas
operatively connected to the support assembly and rocking
much as it is not physically tiring for operation thereof
beam 14 and as indicated in FIGURE 2 is locationally
to any great extent and is operative with reduced relative
movement of the actuating linkage so as to provide a 20 disposed above the rocking beam assembly 14.
As more clearly seen in FIGURES l and 2, the support
safely operating teetering device.
assembly 12 includes a pair of triangular shaped tubular
A further object of this invention is to provide a teeter
frame members =18 and 20 which are spaced from each
ing device requiring no adjustment for accommodating
other at the base portions 22 and 24 by means of a pair
occupants of unequal weight and which is so constructed
as to be relatively harmless and less costly to manufac 25 of parallel connecting base members 26 and 28. The apex
portions of the triangular members 18 and 20 are spaced»
closer t-o each other than the base portionsv22 and 24
ture.
n 1In accordance with the foregoing objects, the teetering
thereof and support therebetween a'tubular shaft mem
ber 30 as more clearly seen in FIGURE 4 which consti
device of the present invention includes a support provid
ing a fixed fulcrum about which a rocking beam or
teetering member is pivoted. Seats are accordingly 30 tutes the fulcrum for the rocking beam assembly 14. The
shaft 30 is connected to the triangular support members
lixed to the opposite ends of the 'rocking beam for receiv
18 and 20 through a pair of sleeve members 32 and 34
ing the occupants. Located in front of the seats are han
which are bolted by -bolt members 36 to the shaft 30.
dle members pivoted to the rocking beam within easy
The sleeve members I32 and 34 are connected as by weld
grasp of the occupants. A vertical lever is pivotally
mounted by the support above the fulcrum for the rocking 35 ing to a pair of upstanding arm members 38 and 40 re
spectively connected to the apex portion of the triangular
beam with the lower end of said lever being in spaced
base members 18 and 20. Centrally disposed on the shaft
close relation above the fulcrum and link connected to
member 30‘ and rigidly connected thereto as by welding
the. rocking beam at spaced points on either side of the
are a pair of spaced arms 42 and 44 which project up
rocking beam fulcrum. The upper end of the lever is
link connected to the pivoted handles on opposite sides 40 wardly in a vertical direction and are rigid with- the
support assembly 12 so as to provide a second lixed ful
of the rocking beam. Accordingly, pivotal displacement
crum or pivot axis through the bolt member '46 which ex-tends between the upper ends of the arms 42 and 44.
of the rocking beam will cause or may be caused by
pivotal displacement of the handle members relative to
The rocking beam assembly 14 is formed by a pair of
the rocking beam which in turn will cause pivotal dis
placement of the lever so that the lower end thereof will 45 tubular sections 48 and 50 which are rigidly intercon
nected by means of a pair of pivot bracket members S2
be displaced in one direction or the other with respect
and 54 secured to the tubular sections 48 and 50 by bolt
to the rocking beam which can only be accommodated by
members 56 as more clearly seen in FIGURE 3. The
pivotal displacement of the rocking beam relative to its
bracket members 52 and 54 are respectively provided
fulcrum. The rocking beam displacing mechanism is
therefore disposed entirely above the rocking beam and 50 with spaced sleeve members 5'8 and 60 for the purpose of
pivotally mounting the rocking beam assembly 14 about
between the handle members providing an' arrangement
the fulcrum shaft 30' rigidly supported by the supporting
which is safer for children by virtue of its locational dis
assembly 12. Sleeve bearings 62 are therefore provided
position and the reduced amount vof relative movement
between the sleeve portions 58 and 60 connected'to the
necessary to effect or accommodate pivotal movement of
the rocking beam. Also, the arrangement lends itself 55 bracket members 52 and 54 and the shaft 30. Pivotal
displacement of the rocking beam assembly 14 is thereby
ideally for less -costly manufacture of the teetering device.
accommodated. The opposite outer ends of the rocking
-` lThese together with other objects and advantages which
will Ibecome subsequently apparent reside in the details of
beam assembly 14 therefore also has mounted- thereon
construction and operation as more fully hereinafter de
scribed and claimed, reference being had to the accom
panying drawings forming a part hereof, wherein like
numerals refer to like parts throughout, and in which:
seats 64 and 66.
60
The mechanism 16 is mounted above the rocking beam
assembly 14 and is safely operative under the control of
the occupants on the seats 64 and 66 to pivotally displace
FIGURE l is a top plan View of the teetering device
the rocking beam. assembly relative to its fixed fulcrum
in accordance with the present invention.
shaft 30 on the support assembly 12. Accordingly, the
FIGURE 2 is a side elevational view of the teetering 65 bolt member 46 which is mounted between the arms 42
device illustrated in FIGURE l.
and 44 in vertically spaced relation above the fulcrum
FIGURE 3 is a sectional view taken through a plane
shaft 30 rotatably receives a sleeve member 68 to which
indicated by section line 3_3 in FIGURE 2.
the lever member 70‘ is connected as more clearly seen in
FIGURE 4 is a sectional view taken through a plane
FIGURE 4. It will be observed that the portion 72 of the
indicated by section line 4_4 in FIGURE 2.
70 lever member 70 extends above the bolt member 46 a
FIGURE 5 is a partial sectional view taken through a
greater distance than the lower portion 74. Connected to
plane indicated by section line 5_5 in -FIGURE 4.
the lower end of the lever member 70 by means of bolt
3,051,481
3
4
76 are pairs of connecting link members 78 and 80‘ which
tion above the rocking beam assembly between the han
extend from the lower end of the lever member 70 in
dles 86 and 8‘8 thereof.
The foregoing is considered as illustrative only of the
principles of the invention. Further, since numerous mod
iíications and changes will readily occur to those skilled
in the art, it is not desired to limit the invention to the
opposite directions by equal amounts for pivotal connec
tion to upstanding projections 82 and 84 lixed to the tu
bular sections 48 and 50 respectively of the rocking beam
assembly 14. It will be apparent therefore, that when the
lever member 70 is pivotally displaced about the pivot
bolt member 46 the lower end thereof which is connected
to both the connecting link members 78 and 80 will be
shifted in one direction or the other with respect to the
rocking beam 14 so as to cause the rocking beam to be
pivotally displaced as more clearly seen in FIGURE 8.
Pivotal displacement of the lever member 70‘ is elfected
by providing a pair of handle members 86 and 88 adja
cent to the seats 64 and 66. The handle members as
more clearly seen in FIGURE 7, are constructed from a
pair of rod members 90 and 92 which are welded to each
other along an upper portion thereof with the lower por
tions thereof straddling the rocking beam assembly and
pivotally connected thereto by means of bolt members 94.
The upper ends of the rod members 90 and 92 form
handlebars 96 while the lower ends of the rod members
form footrest portions 98. Projecting members 100’ and
exact construction and operation shown and described,
and accordingly all suitable modifications and equivalents
may be resorted to, falling within the scope of the in
vention as claimed.
What is claimed as new is as follows:
l. A teetering device comprising, a support, a teeter
member centrally pivo-ted about a first fulcrum ñxedly
mounted by the support in spaced relation above the
ground, a second fulcrum fixedly mounted on the support
in vertical spaced relation above the ñrst fulcrum, lever
means pivotally mounted on the second fulcrum and dis
posed entirely above the teeter member, handle means
pivotally mounted on the teeter member adjacent opposite
ends thereof and operatively connected to an upper end
of the lever means, and connecting means operatively
connecting a lower end of the lever means to spaced points
on the teeter member for pivotal displacement of the
teeter member Áabout the iirst 4fulcrum only in response to
102 are connected to the welded portions of the rod mem
bers 90' and 92 by means of which the handle members 25 a displacing force applied through the handle means to
86 and 88 are pivotally connected to connecting rod mem
the upper end of the lever means in excess of an amount
bers 104 and 106 respectively. The other endsof the con
proportional to a predetermined load differential at the
necting rod members 104 and 106 are pivotally connected
by the bolt member 108 to the upper end of the lever
opposite ends of the teeter member.
2. The combination of claim 1, wherein the upper end
member 70. Accordingly, pivotal displacement of the 30 of the lever means is spaced a larger distance from the
handle members 186 and 88 in the same direction with re
second fulcrum than the lower end and the lower end
spect to the rocking -beam assembly 14 to which they are
is disposed in close spaced relation above the ñrst fulcrum.
pivotally connected, will cause pivotal displacement of
3. The combination of claim 2, wherein said connect
the lever member 70 with respect to the fixed pivot bolt
ing means include a pair of equal length connecting rods
46 in order to pivotally displace the lower end of the
pivotally connected to the lower end of the lever means
lever member as hereinbefore indicated.
From the foregoing description, operation and utility
andV extending in opposite directions` therefrom for spaced
pivotal connection to the teeter member between the
handle means to apply a reduced pivotally displacing
of the teetering device of the present invention will be
apparent. It will therefore be appreciated, that the oc
moment to the teeter member.
cupants of the seats may impart a displacing force to the 40
4. The combination of claim 3, including a pair 0f
rocking beam assembly 14 by pivotal displacement of the
link members pivotally connected between the handle
handle members 86 and 88 which will apply the displacing
means and the upper end of the lever means to transmit
force to the lower end of the lever member 70y at a me
chanical advantage in view of the greater length of the
upper por-tion 72 of `the lever member than the lower
portion 74. The displacing force applied to the lower
end of the lever member 70 will however apply a reduced
turning moment to the rocking beam assembly 14 in view
of the close spacing to the fulcrum shaft 30. Accord
the displacing force from the handle means to the lower
end of the lever means with a mechanical advantage.
5. The combination of claim l, wherein said connect
ing means include a pair of equal length connecting rods
pivotally connected to the lower end of the lever means
and extending in opposite directions therefrom for spaced
pivotal connection to the teeter member between the
ingly, the pivotally displacing force may be so arranged 50 handle means to apply a reduced pivotally displacing
with respect to the Weight differential between the oc
moment to the teeter member.
`
cupants of the seats `64 and 66 as to restrict use of the
6. The combination of claim l, including a pair of link
teetering device of the present invention to two children
mem-bers pivotally connected between the handle means
within a predetermined age range. It will furthermore be
and the upper end of the lever means to transmit the
appreciated, that the arrangement of the mechanism 16 55 displacing force from the handle means to the lower end
is such that there will be a small amount of relative move
ment between the link elements thereof as compared to
the pivotal displacement of the rocking beam assembly
14 effected. The mechanism for displacing the rocking
beam will therefore be operated in a relatively safe man- 60
ner reducing the tendency of children to be injured there
by and is further rendered safer by virtue of its disposi
of the lever means with a mechanical advantage.
References Cited in the file ofk this patent
UNITED STATES PATENTS
1,258,578
Kintzel ___________ -.-___ Mar. 5, 1918
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