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Патент USA US2403531

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July 9i 1946-
F. M. Hoovr-:R Ei- AL
HOLY-POLY DEVIGE-
Filed Jan. 6, 1945
- 2,403,531
Patented July 9, 1'946
‘
2,403,531
Y. . . ..
f ’ UNITED gSTATES_1.arri:NT OFFICE
ROBY-POLY DEVICE
Frank M. Hoover and Edwin E. Hoover, Youngs-Y
town, Ohio,V assignors to Hoover Products, Inc.,
Youngstown,l Ohio, a corporation of Ohio
ApplicationY January 6, 1945, Serial No. 571,593
7 Claims. (Cl. ‘i6-1,)
l
Our invention relates toa roly poly, that is,
2
head portion 4 connected tothe body portion by
to a device which may be rocked or tilted from
means of a neck portion 5. The device is adapted
a vertical position on a supporting surface, and
which upon being freed' from external influence,
to `stand upon `a supporting surface, and. thev
lower half of the spherical body portion 3 provides a s'emispherical base portion upon which the
will right itself~ The center of gravity ofthe de
vice is so oriented that the body tends always
to return to a true vertical position.
A roly poly device of the sort to which the
invention is more particularly directed consists
in a hollow body having, and being adapted to
stand on, a substantially semispherical bottom.
Within the body a weight or mass is concentrated
to provide a center of gravity so located that
the body is in stable equilibrium as long asf it
device may be Icaused to rock or roll on said
supporting surface. Within the hollow body of
this semispherical base portion a weight element
6 is secured, thereby giving the device a center
of gravity which is eñective normally to sustain
the supported vdevice in the upright position in
which it is shown in Figure 1.
~
In accordance with the invention the body of
the device-is formed oi a plurality of hollow shell
stands in righted position. . When rocked kor 15 elements, in the present instance, and preferably
in any instance, of two. complementaryV shell ele
tilted oui'l of such position the tendency of _the
ments 1 and 8, each integrally molded of any
unbalanced mass is to swing the body back into
suitable. molding-.plastic material or molding com
righted position.
’
' Our invention consists in certain new and use
pound. One hali of the body portion 3, head
ful improvements in the construction-of roly poly 20 portion 4 and neck portion 5 is formed in each
shell element, and the two shell elements are
devices, whereby such devices may be manufac
adapted to be united edge to edge to form the
tured in’mass-.production with maximum preci
completed hollow body of the device. The edge
sionI and uniformity in the structure and opera
tion> or thedevices, and with economy of labor
and materials.
I
of the shellelement 'l is provided with a continu
25 ous flange or rib 9, while the edge of shell ele
vThe device of the invention is particularly de
signed for roly poly toys, such as the toy illus
trated and described in Letters Patent No. 2,351,
762, granted to us `Tune 20, 1944. vThe toy of
ment 8 is provided with a complementary groove
. Figure 3` is a view in front elevation of> one of
stampedirom a sheet or plate of such metal as
Ill.V The two shell elements are united by means
of a plastic cement, with the iiange 9 seated in
the groove I0, and inthe assembled structure
theseLetters Patent consists in a hollow` ball or 30 the joint between the two shell elements is ñne
seam l I that is almostJ imperceptible when the
sphere formed of transparent material, and hav
shell elementsY are formed of' colored plastic ma
ing a> roly poly enclosedv therewithin, whereby,
terial;
when theV sphere is rolled or turned the roly poly
Oi' course,.a simulation oi the hair, eyes, ears,
resting upon-the internal surface ofthe sphere atl
nose and mouth of a. human being may be painted'
its lowerpointl or bottom portion, rocks and sways,
or otherwise applied to the head portion 4 of. the
and creeps or slides over said internal surface of ‘
device, and arms and clothing, etc., may be simi
the sphere, ultimately comes: to rest, the roly' poly
larly applied to the body Aportion 3.
will stand in an upright position.
An important feature of the invention resides
The invention will, forl purposes of illustra
in the particular manner in which the weight
tion, beV described as it is embodied in a roly polyelement 6 is organized and secured within the
fory use in such toy. In the accompanying draw
lower>
half of' the body portion 3 of the device.
ing such a device is illustrated.
Additionally, the specialized form of the weight
Figure 1 is a view inside elevation of the rolyk
element, and of the means for securing it in
poly device.;
_
4place. are also matters of prime importance.
Eigure 2 is an exploded view, showing the ele
Theweight, necessarily formed of' a heavy ma
ments that form the body of the roly poly in y
terial, such as a suitable metal, is disk-shaped,
vertical section, and the weight element that-is
and as such may be readily and inexpensively
secured with the body in side. elevation.; and
the bodyelements oliA the device, with the weight 50 lead or steel, the latter metal being preferable,
and if need be the sharp edges resulting from
element illustrated in assembledïiposition‘therein.
the die-punching of the circular disk from steel
Referring to the drawing, it -will be understood
plate may be ground or filed'oiî, as is indicated in
thatthe roly poly device!- in this case consists in
the drawing. '
’
a hollow body> having arelatively large spherical
'- The means for securing vthe disk-shaped weight-`
body portion 3 and a relatively small spherical
2,403,531
3
4
element 6 in proper position in the assembled
in marginally seated and substantially fixed posi
body of the device comprises protuberances I2
tion on the internal surface of said semi-spherical
bottom portion.
molded integrally with the dished or hollow bodies
of the shell elements ‘I and 8. 'I'he protuberances
I2 advantageously are fashioned in the form of
webs or partition-like members that extend trans
veresly of the interior of the hollow body portion
3 of the assembled device, and proyideïwithin
the bottom region of the device a chamber I4 in
which the weight element is confined. The parti
tion member I2 in each shell element need not ~
extend all of the way from the internal semi
spherical surface to the plane of the edge of the
3. A roly poly comprising a hollow body formed
of a Y plurality of molded and assembled shell
elements, the bottom portion of said hollow body
being substantially semi-spherical in form, a disk
shaped weight element, and means molded in
tegrally on the internal surface of each of said
shell elements and cooperating to Asecure said
Íweight element in marginally seated and substan
tially fixed ‘position on the internal surface of
said semi-spherical bottom portion.
4. A .roly poly comprising a hollow body formed
shell element (see Fig. 2), since the partition I2, .
I2 in the assembled structure (Fig. l) need not 15 .of two molded shell elements assembled and se
cured edge to edge, each shell element having a
be continuous in its extent across the interior of
the hollow body portion 3. It suffices that these .
.transverse partition member molded integrally on
protuberances or partitions (or their equivalents)
its internal surface, said partition members pro
viding in the assembled structure a transverse
in a horizontal position in the chamber I 4, as 20 wall that defines a weight-retaining chamber in
may be understood upon viewing Figures l and 3.
the lower portion of said hollow body, and a disk
shall be effective to secure the weight element `
In its ultimate position of assembly the disk
shaped weight secured by said transverse wall
in marginally seated position upon the internal
shaped weight element bears marginally or at its
edge upon the internal surfaces of the assembled
surface of said hollow body below said wall.
shell elements, and the partition members I2 25 „ 5. A roly poly comprising a hollow body formed
bear from above on the weight element and se
of two molded shell elements assembled and se
cured edge to edge, each shell element having a
cure it in tightly seated position. It will here be
transverse partition member molded integrally on
noted that each partition element is integrally
its internal surface, said partition members pro
formed with a cylindrical rib I3. In the as
sembled structure the ribs on the two partitions 30 viding in the assembled structure a transverse
wall-that deñnes a weight-retaining chamber in
I2, I2 are aligned, and are adapted to bear upon
the lower portion of said'hollow body and a> disk
the upper face of the Weight element, thus pro
shaped weight secured by said transverse wall in
viding a diametrical line contact with the top of
the lower portion of said hollow body, said parti
the weight element, while at the bottom of the
weight element a circumferential line of contact 35 tion members being formed with protuberances
that engage said weight substantially as de
is established with the confining body of the de
scribed.
vice. This insures accuracy and permanency of
6. In a roly poly device comprising a body
position of the Weight element, with elimination
having a basal portion of substantially semi
of any tendency for the weight element to become
spherical external contour upon which the device
loose and to rattle.
» "
is adapted to stand and having a body portion
The structure described is not only distinctive
extending upward from said basal portion, and
and Valuable in its ultimate assembly, but it is
a weightr element contained in said basal portion
noteworthy that the structure admits of ease of
of the body; the. invention herein described
the assembling operation.` In making the as
wherein said body comprises two shell elements
sembly, the two shell elements, with plastic ce- ‘
of molded plastic material arranged to be later
ment applied to their edges, are brought together
ally assembled and united in a vertically extend
laterally upon the weight disk 6, and, as the two
ing seam, at least one of said shell elements hav
shell elements are pressed together edge to edge,`
the weight disk is automatically forced into pre 50 ing molded.’ integrally therewith an internal pro
tuberance which provides in conjunction with the
cisely the proper position, and there secured by
body Portions of both shell elements, when the
the marginal and diametrical line contacts a1
shell >elements are laterally assembled upon said
ready described. The cement used on the edges
weight element, security of assembly of the
of the shell elements is a quick setting cement,
whereby the operation of assembling the struc 55 weight -element in the roly poly device.
‘7. In a roly poly device comprising a body hav
ture is effected with speed as well as accuracy.
ing a basal portion of substantially semi-spherical
Within the terms of the appended claims many
external contour upon which the device is
modifications and variations of the exemplary
adapted
to stand and having a body portion ex
structure described may be adoptedwithout de
tending upward from said basal portion, and a
parture from the spirit of the invention
60 weight element contained in said basal portion
We claim as our invention:
of the body; the invention herein described
1. A roly poly comprising a hollow body formed
wherein
said body> comprises two shell elements
of a plurality of assembled shell elements, at
of molded plastic material arranged to be later
least one of said shell elements being equipped
ally assembled and united in a verticallyl extend
with a transverse member, and a weight disk 65,
ing
seam, said shell elements having molded in
arranged below said member and securedthere
tegrally severally therewith internal protuber
by in marginally seated position upon `the inter
ances which together provide in conjunction with
nal surface of said hollow body.
the body -portions of both shell elements, when
2. A roly poly comprising a hollow body formed
of a plurality of molded and assembled shell ele 70 the shell elements are laterally assembled upon
said weight element, security of assembly of the
ments, the bottom portion of said hollow body
weight element in the roly poly device.
being substantially semi-spherical in form, a disk
shaped weight element, and means molded in
tegrally on the internal surface of at least one of
said shell elements _to secure said weight element
FRANK M. HOOVER.
EDWIN E. HOOVER.
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