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Патент USA US2110183

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March 8, l1938.
l. l. TUBBS
Filed July 25, 1935
3 Sheets-Sheet l
.2 .
March 8,1938.
l. |. 'ruBBs
Filed July 25, 193s
March. 8,y 1938.
|_ 1_ TUBES
l 2,110,183
Filed July 25, 19:55
3 sheets-sheet s
Patented- Mar. 8, 1938 ~
marsans nam.
rra 1. Tubbs, coral Gables, Fla.
. dermaßen July z5, mss, sel-_m No. 33,005
iz clams. (ci. 27s-fes) I
Myinvenuon mates to that general _dass of de
Fig. 9 is a central transverse section of a form '
vices wherein an outer cover of leather or other _ or mold which I have found..very useful and im
suitablel wear-resisting material is provided of
portant in the construction of my device showing
suitable form, having an air-tight resilient sack
a sectional elevation of one of my improved balls
in place in the same.
» Fig. 10 is an elevation of a form employed in
the construction of a modified form of my de
Y s or bladder pcsinoned. within it so that the blad
der may be Yinflated to‘expand the outer cover,
thereby providing `a highly elastic and resilient
article especially useful and desirable as basket
balls, footballs,.soccer balls, speed Vballs and the
The object of my invention is to provide a de
. vice of the kind described wherein means are pro
vided for limiting the expansion of the internal'
air-tight sack and thus control the tension upon
15 the cover part. This limiting means may be an
independent part of the device or it may be
' Vice;
Fig. 11 shows two of the parts constructed as in
Fig. 10 in their proper relation but slightly separated to more clearly show the construction.
Fig. 12 shows the completed modiñed'form of
the air-tight element and pressure-resisting
means shown in Figs. 10 and 11.
Fig. 13 is a transverse central sectional view of 15
a die or mold which I have found of great value in
formed as a part of the internal bladder, in which producing- my improved balls.
case the ball remains of substantially its present
Fig. 14 is a transverse section of a coated cord
construction except that the bladder member has . or wire, such as preferably used in the construc
means for restraining its dilation when inflated, tion of the parts shown in Figs. 11 and 12.
Fig. 15 is a-fragmentary section across the wires
thus providing a ball more serviceable, durable,
resilient and reliable than balls as heretofore or elements used in the construction of the parts
made, and in whichfthe ball will retain its form
shown in Figs. 11 and 12.
and size in service and continue .with a true re
upon- the cover prevents distortion of the ball re
In the form shown in the drawings, my device
'comprises a cover' part I, preferably consisting of
any desired number of sections 2-2 and with
seams 3--3 connecting the several sections to
gardless of the pressure within the internal blad
gether at their margins. - The cover is preferably
25 bound through the life of the ball.
This means
-provided for limiting'and determining the stress
To this end my invention consists in the _novel
constructions, arrangement and combination lof
parts, herein shown and described and more par
ticuiarly,po_inted out in the claims.
Fig.- 1 is a central‘transve'rse section of my'im-v
proved ball;
Fig. 2 is a fragmentary section of a portion of
40. the wall of the device, shown in Fig. 1 but en
larged to more clearly show the construction;
Fig. 4 is a fragmentary section similar to that
45 shown in Fig. 2 but showing another slightly
modified form of my device;
Fig. 5 is a fragmentary plan of one form of a.
non-expansible element adapted for use in my de
Fig. 6 is an enlarged vieví-` of a marginal part
of a cover section.
formed of leather or other suitable material with
the sections shaped in the usual or any desired 30v
manner so that they may- be made to readily as
sume a proper curvature and the finished ball
In the form shown in Figs. 1, 6 and '1 the seams
3 are produced by splitting the margin of the sec
tion and _removing a small portion l along the
edge as shown in Fig. 6, and thereafter pla’cin'g
the longer faces 1-1 of the sections together and
Fig. 7 is a view similar to Fig. 6 but showing themargins of two sections connected as in service;
Fig. 8 is a perspective view o_f a modiñed form
`55 of a connecting seam between the sections;
stitching them through the portions of reduced
thickness at the margin 'as at 6, and thereafter
Fig. 3 is avfragmentary section-similar to Fig. 2 _ turning them as shown in Fig. '1.
showing a slightly modified construction.
_ '
will be true, smooth. regular and _accurate in
In the accompanying drawings, wherein like or
35. similar reference characters indicate like or-cor
responding parts:
When thus .
constructed the part ‘l bends down against the
part 5 and the stitching 6, thus ñrmly and secure- '
1y uniting the margins and forming a seam which
is or maybe substantially smooth and ñush upon
both the inner and outer surfaces; making it pos
sible, if desired, to eliminate ~the turning of the
~ball during lthe process of manufacture.
It may also bedesirable in some kinds of balls, 50
or where it is desired to especially reinforce the
seams or connections between the sections to‘
provide a reinforcing part or band 5i) as shown '
in Fig. 7 of canvas or other suitable material tov
extend across the seam and cement or otherwise 55
2 v
secure the same to the cover sectionsA upon the
interior of the cover at opposite sides of the seam
to relieve the seam of substantially all undesir
able stress.
Any suitable means may be provided to limit
the stress upon the- cover and especially on the
able means provided to assist in retaining the
wire in‘ position upon the form. For this pur
pose the form 24 may be coated with caoutchouc
or other rubber-like substance to hold the wire
in position, or as shown in Fig. 14, the wire may
be coated with a similar adhesive materialv 21,
seams 3. As shown in Fig. 1, anelement 8 is ¿so that as it winds upon the form it will tend
provided formed of fine, resilient wire 9, as shown » to hold to the surface of the form and to the
in Fig. 5, of the proper form and size to snugly
10 fit within the interior of the cover and ‘accurately
correspond thereto in size and shape, the size
being preferably just suñicient to snugly ñll the
cover andhold the same fully distended.
adjacent wires, as shown in Fig.v 15, thus spacing
the turns of the wire from each other as desired 10
vand providing a matrix 28 to permanently seal the
member when completed. In the preferred con
struction the matrix is thus constructed in heml
An air-tight member or bladder I0 is provided spheres 49, asshown in Fig. 11, and these hemi
within the cover I and element 8 of suitable form ‘ spheres when suitably _set to retain their form are
and size to f'lll the interior of the element 8 when brought together with their open faces contacting
expanded and to press the non-expansible ele
and are thus vulcanized to form a complete unit.
ment outward tothe limit of its capacity, receiv
Where greater strength is desired, and in fact
> ing substantially the full stress of the air pres
lunder ordinary circumstances, it is preferred to
'20 sure within this member, thus limiting the stress use a second pair of similarly formed hemispheres, 20
exerted by the bladder I0 upon the cover.
52, as shown' in Fig. 12, with their uniting edges
Invthe form shown, a valve II is provided upon crossing the meeting line of the first hemispheres Y
the bladder I0 and is connected thereto in any 49, at substantially right angles; and, if extreme
suitable manner so that air may be introduced strength is desired, a third pair 3 I, of these mem
25 through'the valve into the bladder but that any - bers may be mounted upon the exterior of the 25
` air within the bladder normally cannot escape
spheres formed by hemispheres 49 and 52, ar
past the valve.
ranging them so as to bring the wires of the
As shown, a portion I2 of the valve protrudes' - various hemispheres into lsuch relation to each
through a suitable opening I4 in the element 81 and other as to obtain the greatest possible tensile
30 cover I so that inñating means may be conven
strength for the structure when completed. As 30
iently attached to the valve at the exterior of the before mentioned, the ñnished article is provided
ball to inflate the bladder to the desired pressure. with a valve 32 as hereinbefore described and
Any suitable or well known form, construction, the entire structure is vulcanized, or otherwise
or types of valve may be employed for this pur
35 pose, it being merely desired that the valve be so
attached to the bladder that it will not leak and
shall be conveniently accessible from the out
Side of the cover.
Under some conditions it has been found de
40 sirable to cement or otherwise attach the element
8 and bladder I0 to the cover I so that the parts
I2 will be firmly held in position in the opening I4
and displacement prevented between the element
and cover I.
- ^
In the form shown in Fig. 4, the fabric of the
element\ I8 is coated and ñlled with rubber or
other suitable material and arranged within the
cover as yhereinbefore described.
In this con
permanently set, so >that it will permanently re
tain its form and construction and the wires will 35
be prevented from‘becoming detached from the
completed air-tight sphere which is then enclosed
in the cover as hereinbefore described.
In producing my improved device, I have found
it desirable and expedient to employ a die or mold 40
' I5 as shown in Fig. 9. This mold may be con
structed of any desirable material having sufli
cient strength and- rigidity to avoid injury or dis
tortion when in service.
The cover member I
constructed in any desired manner or as herein
before described and with the part 8 suitably po
sitioned therein are placed within the mold, and
the mold is >the'n closed and held in closed posi
struction whereA a wire fabric is employed as aV tion by any suitable means not shown. The valve
50 base this coating tends to hold the wires in posi
II is ~then ~connected to suitable iniiating means 50
tion and prevent buckling or other injury to the I6 so -that air or other fluid maybe forced into
element from handling, assembling _or in making the element 8 and any desired pressure may be
inspection or repairs. This form provides an air
tight non-expansible bladder, the valve >of which
Under some circumstances I have found the
55 may be the same as -hereinbefore described or of
mold or die 40, shown in Figure 13, very desirable. 55
~ any desired form or construction.
-In some balls or articles it has been found de
sirable `to employ the construction shown in Fig.
` 3. In this formthe element 28 corresponding to
60 the element 8 in Figures 1 and 2 is placed in my
improved ball immediately within the cover I,
and a shield 29 of canvas or other suitable ma
terial is provided within the elementA 28 arranged
to entirely and smoothly cover its interior and
the expansible air-tight member-or bladder 30 is
positioned within the shield 29 which protects the
In this form chamber 4I is formed in the walls `
of the mold with any desired number of openings
or channels 42-42, leading to the inner face of thev
mold and connections 43-43 extending into the
chambers 4I, so that piping or other suitable. 60
-means may be attached to the connections 43-43,
so that when a cover or other parts are placed in
the form the air may be exhausted between the
form and the part to securely- hold the part -in
position in the form and prevent its displacement
member or bladder from injury in case any parts - duringfurther manipulation or when placing the
of the element 28 should become displaced or airètight member within the cover. The cover
~broken in service or handling and will prevent member I constructed-in any desired manner or
70 the broken part from engaging or injuring the vas hereinbefore described and with the element 70
8 and member I0 suitably positioned >therein are
. In the form shown in Fig. 10 a suitable form , placed within the- mold, and the mold is then
24 is provided and aA fine resilient cord or wire 25 clcsed and held in closed position by any suitable
or other suitable-means is spirally wound as at
75 26 upon the vvformas shown, preferably with suit
means not shown.4 The valve II is then con
nected to suitable inñating means I6 so that air 75
or other fluid may be forced into the member I0'
and any >desired pressure may be applied.
The inner surface of the mold or die. may be
ñnished in any desired manner, such as to pro
duced pebbling or other appearance, also to stamp
words, numbers, letters, a _trade-mark or the
2. In an‘inñatable ball, 'a cover comprising a
plurality of sections, means connecting said sec
tions at their margins, said connecting means
being substantially smooth with the inner surface
of said cover, and an air-tight member formed to
iit within and ñll said cover in combination with
like, asat i‘l-l'i, upon the surface of the cover. a ñexible, non-expansible element formed to fit
The ball is then- inflated suñiciently to force the-l within and conform tothe shape of said cover
cover with any desired pressure against the inner adapted to limit the expansibilty of said member
surface of the mold or die, thus causing the ball
to accurately correspond in -size and form to the`
y interior of the mold, it being found that suilicient
and thereby the tension upon said cover and sai
connecting means.
3. In an inflatable ball, a cover comprising a
force may be exerted in this manner to perma
nently set the size and form of the various parts
plurality of sections of suitable material, means
ings or surface indications upon the cover that
splitting the material near the margin, removing
a strip at one side of said split, connecting the
longer edges of the sections and turning the
connected parts inward to co-operate with the
remainder of the thickness of the section to form
connecting said sections at their margins, the ,
15 and at ythe same time imprint any desired mark- . seams between said sections being formed by
may be desired, so that when the mold is opened,
and the ball removed after the pressure has been
suitably reduced, the ball will remain perfect
in form and permanently retain the markings
thus imprinted or indented upon the cover.
The several sections of the cover may be united
by stitched seams in the usual manner or as
hereinbefore described. The connection shown
25 in Fig. 8 has prpven very desirable, however, and
a seam substantially smooth and flush- with the
surface of said sections.
4. In an inñatable ball, a cover comprising a
plurality of sectiöns connected at theirmargins,
a connecting seam between said -sections formed
in this form stitches may, if desired, be entirely by splitting the material at the margin removing
dispensed with. In this form the sections are a part at one side of said split, connecting the
halved >or split along their margin to provide a longer edges of the sections and turning the ccn- _
thinner portion 20, and dovetails 2| of any desired ' nected parts inward to co-operate with the re
form or size are-provided along the margin and mainder of the thickness of the section to form 30
-also along the junction of the split or halved por
a seam, in Acombination with a continuous non
tion and that of full thickness. When thus con
expansible element within the cover extending
structed the halved or split portions of adjacent across said seams adapted to limit the tension
sections may be cemented together with the dove
upon the seams when in service.
tails 20 and 22 interlocking to form a permanent
5. In an inflatable ball, a cover comprising a
plurality of sections` of suitable material, means
_In the form shown in Fig. 9, the seams 24 are connecting said sections at their margins, ,the
merely scarfed to a thin edge and united with connection between said sections being formed by
cement in the manner employed with leather splitting the material near the margin, removing
belts or other similar articles, leaving a smooth a strip at one side of said split and securing the
iiush surface at each side of the seam with the
cover of substantially uniform thickness.
split parts together.
6.’In an inflatable ball a ñexible cover com
prising a plurality of connected sections in com
In articles having an inñatable member or
bladder to 'hold a .cover distended it is obvious i bination with an air-tight member formed to ñt
that the usual seam having a part projecting within said cover and reinforcing means adapted
into the interior of the ball will cause irregular to control the. form and size of said member com
rebound and also tends to distort the cover and _ prising a plurality of strengthening elements ar
cause injury to the bladder, _while with the uni
ranged to form a hollow matrix, with means _con
form contour seams such as herein described, necting said elements adapted to hold the same
50 the bladder and elements> will contact equally in position.
throughout the entire cover andl will insure per
7. In a resilient ball, a cover comprising a plu
fectly regular rebound, also especially when seam rality of sections,J seams connecting said sections
reinforcing means is provided, such as described at their margins, and an air-tight member formed _
in connection with Fig. 7, the seams become very to iit within said cover, in combination with
55 strong and have substantially no tendency to means comprising a plurality of strengthening 55
_ stretch or distort, aiding materially to preserve elements arranged to form a hollow matrix of
the shape of the cover as well as the life of the suitable form, inv combination with means con
inñatable member.
necting said elements adapted to hold the same
Having thus described my improvement, it is
60 obvious that various immaterial modifications
may be made in my device'without departing
from the spirit of my invention, hence I do not
in position, and an air-tight member within said
.8. In a resilient ball, a plurality of strengthen
ing elements arranged to form a hollowmatrix
- wish’to be understood as limiting myself to the of suitable form, in combination with means con
exact form or construction shown.
necting said elements, adapted to hold the same
What I claim as new and desire to secure by> in position and adapted to cooperate with said 65
Letters Patent is:
elements to form an air-tight space within the _
1. In an inflatable ball, a cover comprising a
plurality of sections means'connecting said ~sec- ‘
~tions at their margins, said connectio. s being
70 substantially iiush with both surface- of said
cover, and an air-tight member formed to fit
9. In a resilient ball, a cover comprising a plu
rality of sections, seams connecting said sections
at their margins, and an air-tight member with
in said cover, in combination with means ex
within and iill said cover, in combination with__ tending across said seams and sections, adapted
ñexible, non-expansible and continuous means to limit »the expansibility of said member, com
within the cover adapted to limit _the expansi-y prising a plurality of'strengthening elements ar
75 bility oi' said member. v
ranged to form a hollow matrix of suitable form 75
„to enclose said member, in combination With
formed to fit within said cover in combination
meansr'conìnecting said elements adapted to hold
with means formed to ñt within said cover and
the `same in position.
F 10;" In a resilient ba1l,-a cover comprising a
plurality- of sections, seams connecting said sec
tions at their margins, in combination with ñex
ible means adapted to limit the stress upon rsaid
enclose_'said member; said` means cooperating
seams, comprising a plurality -of strengthening
members arranged to form a hollow matrix of
10 suitable form to snugly fit within said cover and
with the adjacent surfaces of said cover and said
member, and permanently attached to each.
12. In a resilient ball, a cover comprising a
plurality of sections and an airftight member
formed to fit within said cover in combination
Awith means positioned between said cover and
said member, permanently attached to each and
vmeans, connecting said elements adapted to lhold ' connecting the sections of said cover andsaid
air-tight member;
the same in position.
11. In a resilient bal1,_a cover comprising a
`plurality oi’A sections; and an air-tight member
' mA I. TUBBs.
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