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Патент USA US2127585

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Aug. 23, 1938.
2,127,585
R. |_. DOWDELL
BALL MAKING MACHINE
2'Sheets-Sheet 1
Filed June 7, 1937
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Aug. 23, 1938.
2,127,585
R. L. DQWDELL
BALL MAKING MACHINE
Filed June 7, 1957
2 Sheets-Sheet 2
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Patented Aug’. 23, 1938
2,127,585
UNITED STATES’PATENT OFFICE
2,127,585
BALL MAKING MACHINE
mph L. Dowdell. St. Paul, Minn.
Application June ‘I, 1937, Serial No. 146,826
21 Claims. (CI. 29-33)
This invention relates to machines for the man-'
ufacture of metallic balls, and has among its ob
jects to provide a device which is compact and
in which slugs can be rolled accurately to spheri
cal shape, at great rapidity.
Features of the invention include: the mount
ing of the device on a motor as a base and the
driving of the device by the motor; the use of
three discs or plates between two of which a
third disc operates; and adjustment of one of
the discs for changing the spacing conformably
to the desired size of the ball; the use of a device
for cutting slugs and the mounting of the same
Referring ?rst to Figure 1, the numeral I indi
cates an. electric motor of any preferred type op
erating with its shaft 2 vertical. 0n the top of
the motor is secured, by means of screws, 9. plate
3. The shaft 2 has a bearing in plate 3. Rising 5
from plate 3 are three rods or spacers 4. The
bottoms of the rods are threaded into the plate 3
and jamb nuts 5 are provided.
Mounted at the top of the rods 4 is a disc ‘I
having openings 8 therein through which the 10
upper end of the rods slidably pass. The upper
ends are threaded, and have upper and lower ad
justing and jamb nuts 9 and I0. These nuts with
the threads provide means for adjusting the disc 1
on one of the discs which moves; the mounting
15 of the disc and knife on a driving shaft common ' relatively to the disc I2 to vary the spacing for 15
to both; the cutting of the slugs by means ro
‘ tating with 'one of the discs; the arrangement
, whereby cutting takes place between the discs;
the utilization of the pairs of discs as means for
20 forming a reservoir or hopper for the ?nished
articles; the use of pairs of discs in tandem
whereby one pair of discs delivers to a hopper
and this hopper delivers to a second pair of discs;
the provision of means whereby knife adjustment
25 and space adjustment of the discs may be accom
plished to provide for the manufacture of dif
ferent sizes of balls; and all details of construc
35
40
50
55,
forming substantially spherical bodies from ir
regularly shaped bodies or slugs placed therebe
tween.
The cross-sectional areas of the groove 25
may be varied as well as the cross-sectional con
?guration and the grooves may be in the rotative
disc as in Figures 1, 2 and 4, or in the stationary
disc as in Figure 5.
inherent in the disclosure.
' Objects, features and advantages of the inven
Mounted on the disc l2 and thereforemovable 30
tion will be set forth in the description of the with the driven disc, is means for cutting slugs
drawings forming part of this application, and in - from stock, (in this instance wire stock), and
said drawings
delivering the slugs between the plate. In fact,
in this embodiment the cutting takes place be
Figure 1 is an elevation partly in vertical sec
tween the plates which is a feature. This cutting 35
tion showing my invention mounted upon and op
means comprises a knife l5, (see Figure 2), which
erated by an electric motor;
'
Figure 2 is a plan section on line 2-2 of Figure is set in a recess it, (see Figure 1) of the disc it’.
1 viewing the spiral groove and knife mounted in A screw ll secures the knife, and said knife co
operates with the under surface 20 of the disc ‘I
the lower disc;
,
to shear oil the projecting portion 2| of the stock 40
Figure 3 is a vertical section showing a modi?
wire 22. This stock wire is introduced through an
cation in which means is provided on the rota
opening 23 in disc 1, and may be fed by any suit
tive disc for adjusting the cutting means;
Figure 4 is a vertical section showing pairs of able means such as rolls 24. In this embodiment
discs arranged in tandem, so that balls formed the knife provides two shearing edges respectively
by one pair are delivered between another pair designated 26, 21, in Figure 2. The knife may 45
for ?nishing and also showing the shearing knife have other shapes providing one, or morethan two
mounted on the shaft upon which the discs are cutting or shearing portions or edges.
The disc I2 is held to shaft 2 by screw 30. The
mounted;
I
Y
Figure 5 is a modi?cation in which the spiral rolling or shaping operation takes place in a hop
grooves are on the stationary instead of on the per 3| having a slanting bottom 32 and a delivery 50
spout 33. The present motor has a speed of rota
movable disc;
Figure 6 is a detail showing a modi?ed groove tion of about 1100 revolutions per minute, and
shape; and
thus very rapid rotation of the disc l2 occurs, with
Figure '7 is a detail section of another modi?ed the rapid production of a stream of spherical
groove shape.
bodies, which flow into the hopper from the 55
tion shown, along with the broader ideas of means
30
producing balls of di?erent sizes. The disc I2
is mounted upon the shaft 2 and is arranged below
the disc ‘I, and has on its upper faceaspiral groove
l3. The plates thus cooperate to change the
shape of bodies or slugs placed therebetween and 20
to give such bodies or slugs a substantially spheri
cal form. The plates thus provide means for
2,127,585
2 .
periphery of the moving disc. Suitable space is
provided between the periphery of the disc and
means inasmuch as the'knife cooperates with the
?gure has also connected thereto a second casing
12 and it will be understood that any number of
the connections of this kind can be made to
provide a “stack” of chambers having ball form
ing means therein.
In Figure 4 the stationary discs ‘I form the
top and bottom of a receiving chamber ‘I3 into
bottom surface 20 of the disc ‘I to shear-cut the
which balls are delivered from between the upper
slugs from the supply. It is noted that the balls
are formed within the hopper in the structures
be delivered through an opening ‘I5, between the‘
the hopper wall to assure exit of the balls. It is
noted that the knife is located in the center of
the disc and that in this instance the slugs are
carried from center to periphery.
.
One of the discs constitutes part of the cutting
ll)
ingly threaded casings ‘II. The lower disc in this
of Figures 1, 4 and 5. This scheme has the ad
vantage of compactness.
Referring now to Figure '7' the use of a V
15 shaped groove is preferred and is advantageous
pair of discs ‘I and I2 and from which they may '
lower pair of discs ‘I and I2. The upper disc I 2
has a recess 11 therein for receiving'the knife ‘I8 '
which is mounted in a cross slot ‘I9 of the shaft
80. This shaft may be the electric motor shaft 15
because it allows of size variation. Also there
is a space 36 between the bottom of the body 35
being rolled, and the bottom of the groove. In
or any other suitably driven shaft, and it is
noted that in this case the disc or discs and the
stead of making the groove strictly V-shaped,
20 a channel 31 has been provided, allowing slightly
more space below the ball to take care of the
grindings. The same device indicated at 39 of
a feature. A jam nut 8| threaded onto the shaft
80 secures the knife ‘I8 in operative relation.
The upper disc ‘I has the usual opening 23 through
which the wire 22 is introduced to cutting posi
Figure 6 has been provided for the spherical
groove 49, thus leaving a space below the spheri
ner-wrench openings 95 by which-they can be '
25 cal working surfaces of the groove.
In Figure 3, a modification has been shown in
which provision is made for adjusting, the knife
' when the spacing adjustment between the discs
is made, so that the knife will always be in
shearing relation with the under surface 20 of
the top disc ‘I,' and also to provide a separate
adjustment ‘of the knife support relatively to
in
both discs.
To these ends a cylindrical recess
50 leads downwardly from the top surface of the
plate l2 and this recess is threaded as ‘at 5|.
In this recess 50 is ?tted a plate 52 which is in
threaded engagement with the threads 5|. The
plate 52 has spanner-wrench openings 53, by
‘which it can be rotated to adiust it vertically by
40,
means of the screw
threads.
_
In this manner a
knife are mounted on the same shaft, which is
tion.
In this embodiment the discs ‘I have span
adjusted to vary the spacing between the discs.
and when the spacing is increased a knife (not
shown) is substituted for knife ‘I8, the substi
tutedknife being of the proper vertical height to
have its bottom rest on the bottom of the slot
‘I9 with its top in operative relation with the 30
surface 20. It is understood that the slot ‘I9 is
of. sufficient vertical height to accommodate a
knife of thev maximum vertical height,‘which may
be_ required by the adiustment for maximum
spacing between the discs. The discs I2 are suit
ably secured for rotation with shaft 80 and the
lower disc has a depression 81 in which is adjust
ably threaded a disc 88. In Figure 4; partly
?nished spherical bodies can be delivered through
the opening ‘I5 and'given a final ?nish between ' '
very ?ne adjustment can be obtained, it being
the lower discs.
understood that very fine threads are used. The
:plate 52 has a socket 55, and in this socket is
slidably arranged a knife 56. In the socket is
also a spring 51 which presses the knife upwardly
against the under surface 29 of the disc ‘I. The
opening 23 receives the stock wire 22 as in Fig
delivered to the lower storage chamber 13*.
In Figure 5 has been shown a modification in
which the spiral groove 90 is in the upper disc ‘I.
In this instance the lower disc l2 which is ro
tative with‘the shaft 2 has a smooth upper face
93. The lower disc is provided with the recess
ure 1.
A screw 60 passes through the knife and
50, having adjustably threaded therein the plate
into the plate 52 which screw is unscrewed when
50 a down adjustment of the plate 52 is made. By
this means the upper surface of the knife 56
remains in shearing relation with a surface 20
for all adjusted positions of plate 52 and of the
disc 'I on the rods 4. By the adjustment of plate
55 52 as well as adjustment of they plate ‘I, the de
vice is adapted for operating on different size
52 in turn having a recess 55 and knife 56 there
in, all as in Figure 3. The chamber ‘I3 is here
slugs to produce different size balls. Moreover,
these adjustments can be made conformably to
the character of the metal used, which adjust
are quite important in order to obtain just
t 60 ments
the right pressure, just the right character of
feed, etc. The disc I2 is cut away as at 55, to
provide leads for the slugs into the spiral groove,
when the upper surface 66 of the plate is at a
65 lower level‘ than shown in Figure 3.
Referring now to Figure 4, this is a modi?ca
tion in which pairs of discs are used in what
might be called tandem relation. This ?gure
also shows how a stationary disc ‘I of any pair
70 can form the bottom of a receiving or supply
chamber, and shows a simple schemeby which
a any number of stationary discs can be connected
together by casings in superposed relation. Each
disc ‘I, in this instance, is threaded as at ‘III and
75 the discs are connected by means of correspond
These ?nished articles are then
formed as in Figure 4.
In Figure l, the opposed faces of the discs are
parallel. In Figures 3, 4 and 5, thesefaces are
non-parallel. In Figures 3 and 4, the surfaces
2|] are slightly dished so that the space between
the discs are convergent outwardly. In Figure
5 this outward convergence is obtained also by
cupping the upper disc, but here the spiral groove
is formed in the cupped surface.
Of course
either disc may be cupped, and either or both 60
discs may have a spiral groove or grooves.
For convenience I have used the word “disc"
to designate the elements which cooperate to
spherically form the non-spherical bodies or to
?nish bodies which have been roughed up into
approximately spherical form. No limitation as
to shape is intended by the word “disc”, because
these elements may be of any desired shape. The
disc, however, is a preferable shape for most pur
poses, since it is light of weight, and easy of
formation.
It may be stamped or molded.
70'
I have also used the word "slug” to designate
a piece of supply material which is to be spheri
cally or substantially spherically formed, and of
course no limitation is meant by this word.
75
\
-
'
3
2,127,585 .
of members mounted coaxially for rotation rela
The present device can be used for completing
the ?nish ofbodies which have already been. tive to ‘each other, one of said members being
formed so as to progress a. slug oi.’ material along‘
-formed into spheres. Important separate fea--,
tures are the cutting of the slugs by means rotat
ing with the disc; the cutting between the discs;
and the formation of the bodies by means placed
_ a spiral path ofincreasing radius with respect to
said ‘members, during .its formation into a ball,
and means'i’or introducing uniformed-slug ma
terial adjacent the axis of said ‘members.
within an enclosure which may act as reser
6. A ball forming machine comprising a.pair
voir for or hopper for the ?nished articles or from
which un?nished articles can be delivered to other ' of members mounted coaxiaily for rotation rela
tive to each other,‘one of said members being 10
discs.
formed with a spiral way so asLto progress a slug
I claim as my invention:
'
I
vof material along a spiral-‘path of‘ increasing
radius with respect to said members, during its
formation‘ into a ball, and means'for introducing
uniormed slug material adjacent theaxis of said 15
' 1. In a device of the class described, a shaft
having thereon a ?rst disc, 9'. second disc opposed
to the ?rst, said discs having means for giving
and being cooperable to give a substantial spheri
cal form to non-spherical ‘ slugs placed there
'
members.‘
..
.
between, means for‘cutting slugs from stock ma \ '7. A ball forming machine comprising a pair
terial, part of said means being operated by said of members‘ mounted coaxially for rotation rela
tive to each other, one of said members being
shaft, a hopper into which-the cut slugs are de
20 livered, a second pair- of discs constructed and formed so as to progress a slug of material along a 20
operable in thefmanner of the ?rst-mentioned spiral path of increasing radius with respect to
disc, the second disc of the second pair forming said members during its formation into a ball,
the bottom of said hopper and having an opening ' one of said members being formed with an open
through which balls are delivered between the ing adjacent its axis for the introduction of slug
stock, and the other member being formed to co
second pair of discs.
,
operate as a shear with respect to said- opening
~ 2. A device of the class described comprising a
'
,
,
motor having a shaft rising therefrom. a ?rst during relative rotation.
8.‘A ball forming machine comprising a pair
member rotatable with said shalt, a second mem
ber above the ?rst and havingvan opening through
of plates mounted in spaced relationship for
30 which supply material is fed toward the ?rst
movement relative to each other, said plates be
ing of a con?guration such that they cooperate
member, means for adjusting the spacing between
the members, said members having means for
giving and being cooperable to give a substantial
spherical form to non-spherical slugs placed
therebetween, a cutter on the ?rst member, a
spring urging it toward the second member, and
to roll an irregular body into a‘ ball, one of said
plates being formed with a hole for the introduc
tion of stock adjacent the axis of rotation of the
relatively rotatable plate, and a shear knife
mounted on the other plate for rotation across
means for adjusting the cutter to cooperate with
the second member to cut slugs from supply ma
terial fed through the opening of the second
said hole.
which the slugs are separated, and a passage
being formed with a way so as to progress a
between that member which forms the bottom of
the reservoir by which balls are delivered be
tween the second pair of members.
5. A ball forming machine comprising a pair
slug of material along a spiral path with respect
Itoo said plates so as to form said slug into a
-
9. A ball forming machine comprising a pair
of plates mounted in spaced relationship for move
ment relative to each other, said plates being 40
member.
of a con?guration such that they cooperate to
a 3. A device of the class described comprising a
motor having a'shaft rising therefrom, a, ?rst roll an irregular body into a ball, one of said
member rotatable with said shaft, a second mem- - plates being formed with a hole for the introduc
ber above the ?rst and having an opening through tion of stock adjacent the axis of rotation of the
which supply material is fed toward the ?rst relatively rotatable plate, a shear knife mounted 45
member. means for adjusting the spacing between on the other plate for rotation across said hole,
the members, said members having means for and means for adjusting the plane of rotation of
giving and being cooperable to give a substantial said shear knife with respect to said hole.
10. A ball forming machine comprising a pair
spherical form to non-spherical slugs placed
therebetween, a cutter. on the ?rst member and, of spaced plates mounted for rotation relative to
means for adjusting it to cooperate with the each other, one .of said-plates being formed with
a substantially spiral groove of substantially V
second member to cut slugs from supply ma
.
terial fed through the opening of the second shaped cross-section.
,11. A ball forming machine comprising a pair
member, and a chamber'in which said members
operate and forming a hopper into which the of spaced plates mounted for rotation relative 55
?nished bodies are delivered from the members. to each other, one of said plates being formed
with awsubstantially spiral groove of substantial
4; In a device of the class described, two ver
tically spaced pairs of ball producing means, each ly V-shaped cross-section with a minor groove
pair consisting of an upper and a lower member, at the base of the V-shaped groove.
12. A ball forming machine comprising a pair 7 60
60 each pair of members having means for giving
and being cooperable to give a substantially of spaced plates mounted for rotation relative
spherical form to non-spherical slugs placed to each other, one of said plates being formed
with a substantially spiral groove of substantially
‘ therebetween, a tube havingithreaded engage
ment with the upper members to form therewith semi-circular cross-section, and a. smaller groove
at the bottom of the ?rst groove. ,
a reservoir, a shaft for driving the lower mem
65
bers oi.’ the pairs-means on the shaft cooperable
13. A ball forming machine comprising a sta
with one of the members for producing slugs at a tionary plate, a motor having a shaft perpendicu
point between that pair of members which oper
lar with said plate, a plate mounted on said shaft
ates in the reservoir, means through which the for rotation in spaced relation in a plane par
stock is fed to the slug producing means and from allel with said stationary plate, one of said plates 70
all.
14. A ball forming machine comprising a sta- 76
2,127,586
tionary plate, a motor having a shaft perpendic
ular with said plate, a plate mounted on said
shaft for rotation in spaced relation in a plane
parallel with said stationary plate, one of said
plates being formed with a spiral groove so as
shaft for rotation in spaced relation in a plane,
parallel with said stationary ‘plate, one of said
with respect to said plates whereby to form said
plates being formed with a way so as to progress
a slug of material along a spiral path with re
spect to said plates so as to form said slug into
a ball, said stationary plate being apertured for
the introduction of $1118 stock adjacent the axis
slug into .a ball.
of said rotatable plate.
to progress a. slug of material along a spiral path
I
~15. A ball forming machine comprising a sta
10 tionary plate, a motor having a shaft perpendic
ular with said plate, a plate mounted on said
shaft for- rotation in spaced relation in a plane
parallel with said stationary plate, one of said
plates being formed with a. spiral groove of sub
15 stantially V-shaped cross-section so as to progress
a slug of material along a spiral path with re
spect to said plates to thus form said slug into
19. A ball forming machine comprising a sta
tionary plate, a motor having a shaft perpendic
ular with said plate. a plate mounted on said
shaft for rotation in spaced relation in a plane,
parallel with said stationary plate, one of said
plates being formed with a way so as to progress
a slug of ‘material along a spiral path with re
spectto said plates so as to form said slug into
10v
15'
a ball, said stationary plate being apertured for
the introduction of a continuous length of slug -
a ball.
16. A ball forming machine comprising a sta
20 tionary plate, a motor having a shaft perpendicu
lar with said plate, a plate mounted on said
shaft for. rotation in spaced relation in a plane
parallel with said stationary plate, one of said
plates being formed with a spiral groove of sub
stantially semi-circular cross-section so as to
progress a slug of material along a spiral path
with respect to said plates so as to form said
slug into a ball.
17. A ball forming machine comprising a sta
4 tionary plate, a motor having a shaft perpendic
ular with said plate, a plate mounted on said
shaft for rotation in spaced relation in a plane
parallel with said stationary plate, one of said
plates being formed with a way so as to progress
a slug of material along a spiral path with re
spect to said plates so as to form-said slug into
stock adjacent the axis of rotation of said rotat
able plate, and means on said rotatable plate 20
for shearing of lengths of stock into slugs as the
plate rotates.
_
20. A ball forming machine comprising a plu
rality of stationary ~plates, a motor having a shaft
perpendicular of said plates, a plurality of plates 25
mounted on said shaft for rotation in spaced re
lationship parallel with said stationary plates,
said plates being formed so that material in
troduced between said stationary and movable
plate will be rolled into a ball form, each of 30
said stationary plates being formed so as to per
mit the introduction of material adjacent the
axis of rotation of said movable plates.
21. A ball forming machine comprising a pair
oflspaced plates mounted for rotation relative 35
to each other about an axis which is perpendic
a ball, and means for introducing slugs of ma
ular to the plane of each plate, - one of said
terial adjacent the axis of rotation of said rotat
plates being slightly dished, and one of said plates
able plate.
being shaped with a way so as to progress ma
‘
18. A ball forming machine comprising a sta
tionary plate, a motor having a shaft perpendic;
ular with said plate, a plate mounted on said
terial from a position adjacent the axisalong a 40
spiral path relative to said members.
,
RALPH L. DOWDELL.
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