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Патент USA US3072289

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Jan. 8, 1963
G. s. IKELHEIMER
3,072,279
RIVETING MACHINE
Filed Sept. 9, 1959
2 Sheets—$heet 2
INVENTOR
66/10 [d 5.‘ Ike!hell/Her’
BY
-
All/rm, Lida/y, Dame/5 5 Marci
ATTORNEY?
United States Patent 0 "
has!
C6
3,d72,279
Patented Jan. 8, 1953
2
rivet heading punch in their advanced positions, heading
3,€l72,279
over a rivet, which has pierced the work pieces.
RIVJETKNG MACHINE
FIG. 6 is an axial sectional view of a combination die
Gerald S. llreiheirner, 95 Lexington Ave, Apt. III,
and heading tool illustrating a modi?cation of the inven
tion, wherein the movements of the die and punch are
under the control of pressurized ?uid.
Referring ?rst to FIGS. 1 through 5, the bed of the
riveting machine is indicated by the numeral 10 said
machine having a power driven connecting rod 11 coupled
New York, NE.
Filed Sept. 9, 1959, Ser- No. 838,872
26 Claims. (Cl. 218-1)
This invention relates to riveting machines and more
particularly to machines of the type wherein automatically
fed rivets are utilized in the manner of punches, to pierce 10 to a bell crank 12 which is in turn joined by means of a
the work-pieces which are to be joined together, thereby
pivoted link 14 to a driving ?tting 15 which is vertically
obviating the need for a separate punch and die and also a
slidable Within a bushing 17 threaded into a bed 16.
The riveting machine further has a rivet feed device
separate piercing operation.
An object of the invention is to provide a novel and
improved combination die and heading tool or structure,
in a riveting machine of the above type.
A further object of the invention is to provide .an im
proved combiuation die means and heading structure,
wherein the die is made to have advancing and retracting
movements, to enable the work pieces to be pierced by
the rivets and to facilitate the rapid and effective heading
indicated generally by the numeral 19, including a ver
tical tubular rivet guide 21 in which there is disposed a
rivet driver 23.
As will be understood, the rivets, which are adapted to
constitute punching devices for piercing the work pieces
and cutting out slugs therefrom are deposited in the ver
tical tubular guide 21 with their heads uppermost, and are
brought downward into engagement with, and forced
through the work piece sheets 24 by the driver 23.
over the rivets.
A further object of the invention is to provide .an im
Carried by the machine bed 10 is a stationary sleeve
proved combination die and heading tool as above said
26 said sleeve at its lower end abutting the upper end of
forth, which is characterized by a novel slug-discharge 25 the bushing 17 and being accurately located thereby. As
means adapted to use ?uid under pressure, by which the
seen in FIGS. 1, 4, and 5, the stationary sleeve 26 may
slug which is removed from the work pieces during the
constitute a rest for the work pieces 24-.
piercing of the same, may be readily disposed of prior
In accordance with the present invention, in conjunc
tion with the stationary sleeve 26, the rivet feeding means
to the heading of the rivets.
Yet another object of the invention is to provide an im
19 and the driver 23 there is provided a novel combina
proved retractable combination die and heading tool,
tion die means and heading tool, which enables the rivets,
indicated at 28, to be forced into and through the work
pieces 24 in the manner of punches, and to effect a head
ing over of the rivets for the purpose of securing to
gether the work pieces 24. This combination die means
wherein novel and simpli?ed means are provided for
effecting the retracting and advancing movement of the
tool, and for correlating the same with the advancing and
retracting movements of the rivet-heading punch.
A feature of the invention resides in tne provision of
novel mechanical locking means for maintaining a com
and heading tool as shown in FIGS. 1-5 comprises an
inner sleeve 30 (also hereinafter referred to as a material
bination die and heading tool in an advanced position
supporting sleeve) which is vertically movable within
during the work piercing and supporting operation.
the outer stationary sleeve 26 between advanced and re
Another feature of the invention resides in provision of 40 tracted positions. In FIGS. 1 and 5, the material sup
novel and simpli?ed ?uid-actuated means for controlling
porting sleeve 30 is shown advanced whereas in FIG. 4
it is shown as being retracted.
the advancing and retracting movements aforesaid, and
also like movements of the rivet heading punch, all in
The material supporting sleeve 30 at its upper end has
conjunction with a novel mechanical inter-lock means.
an opening or bore which is commensurate with the di
A further object of the invention is to provide an im
ameter of the rivets which are to be utilized. The said
provide and simpli?ed advancable and retractable com
upper end of the sleeve 30 is constituted to function as a
bination die and heading tool in accordance with the fore—
die member whereby, when engaged with the under sur
going, wherein there is provided a simpli?ed mechanical
face of the work pieces 24, it will enable the rivets to
interlock and novel alternately operable means for main~
puncture holes through the work pieces and to be dis
taining the inter-lock in operative condition.
posed therein, in the manner indicated in FIGS. 1, 4 and
5. In FIG. 1 two slugs 32 are shown .as having been
punched from the work pieces 24 by the: rivet 28 while
the work pieces are being supported by the outer stationary
sleeve 26 and the inner material supporting sleeve 39.
As seen in FIGS. 2 and 3, opposite side portions of the
stationary sleeve 26 are removed to provide slots 26x
and 26y respectively at two places on the outside of the
Other objects of the invention are to provide effective
mechanical locking and control means in conjunction with
a retractable and advanceable combination die andheading
tool, which means are extremely simple in construction,
relatively small and compact, reliable in operation and
capable of being economically fabricated and produced.
Other features and advantages will hereinafter appear.
In the drawings accompanying this speci?cation, similar
characters of reference have been used to designate like
components.
FIG. 1 is a vertical axial sectional view through a com
bination die and heading tool as provided by the inven
tion, mounted in a riveting machine, portions of which
material support sleeve 30, whereby certain oppositely
disposed areas of the sleeve 30 are uncovered and ex
60
posed.
In accordance with the present invention, see FIGS. 2
and 3, the material supporting sleeve 30 is arranged to
enable the struck-out slugs 3 to be readily ejected or dis
charged from the sleeve, by the use of pressurized ?uid,
latter are shown in elevation.
FIG. 2 is the front elevational view of the structures 65 such as compressed air or the like.
depicted in FIG. 1.
FIG. 3 is a top plan view of the combination die, and
heading tool shown in FiGS. l and 2.
In accomplishing
this, the sleeve 30 is provided with a relatively large side
opening 34 and has a second and smaller side opening 36
disposed at a higher level than the larger opening 34. The
larger opening 34 is elongate and in the nature of a slot,
FIG. 4 is a fragmentary vertical axial sectional view
similar to that shown in FIG. 1, but illustrating the re— 70 as seen in FIG. 1. The outer stationary sleeve 26 has an
tracted position of the die.
FIG. 5 is a view like FlG. 4- hut showing the die and
opening 38 connected with an injection air tube 39. A
suitable source of air is supplied through a usual valving
3,072,279
'2
ea
4
ing movement of the balls 47, and the plunger and sleeve
means. When the material supporting sleeve 30 is in its
will be halted by engagement between the bottom surface
advanced position as shown in FIGS. 1 and 5, the openings
of the plunger 42 and a stop ring 54. The stop ring 18
36 and 33 are in registration with each other, and under
disposed in the interior of the stationary sleeve 26 and
such conditions a periodic blast of compressed air through
the tube 39 will eject the slugs 32 from sleeve 30, through U! adjacent the bottom edge thereof.
After the aforesaid punching through of the work
the large opening 34. It will be understood that the blast
pieces 24 by the rivet 28 (see FIG. 1) and prior to the
of air is periodically e?ected, by timed action of the con
retracting movement of the‘ material supporting sleeve 30
trol valve in the line supplying the tube 39.
and the advance of the heading punch 52, the blanked
By the present invention, a novel and simpli?ed lock
ing means or inter-lock is provided between the inner 10 out slugs 32 will be ejected by a blast of air through the
tube 35‘), as already hereinabove described.
material supporting sleeve 30 which constitutes the die,
Referring now to FIGS. 4 and 5, the rivet 28 and the
and the outer stationary sleeve 26. In effecting such inter
associated mechanism is illustrated following the punch
lock, and also for the purpose of supporting the material
ing and during the heading procedure. In FIG. 4, the
supporting sleeve 30, there is provided a plunger or car
heading punch 52 is ascending, whereas the material sup
rier sleeve 42 having a lower portion 42a of an enlarged
porting sleeve 30 is in its retracted position with the slugs
diameter which slidably bears in an enlarged bore of the
32 already ejected or discharged. Further upward move
outer stationary sleeve 26. The upper extremity of the
plunger 42 is internally threaded, and receives the lower
ment of the punch 52 from the position shown in FIG. 4,
threaded end of the material supporting sleeve 30‘ where
will cause the tapered nose or upper extremity of the
by these two sleeves are joined together to move as a
punch to engage the correspondingly tapered bore of the
unit.
Within the stationary sleeve 26 there is provided a
helical compression retracting spring 44 engaging an in
ternal annular shoulder 45 in the stationary sleeve 26 and
an annular shoulder provided by the enlarged portion 42a
of the plunger sleeve 42. Thus, the plunger sleeve 42
material supporting sleeve 30. Upon such engagement
occurring, the continued upward movement of the punch
52 will cause the material supporting sleeve 30 and the
plunger 42 to be carried along with the punch, and as
the punch and die sleeve engage the lower extremity of
the rivet shank, the rivet will be headed and spread apart,
and also the material supporting sleeve 30 are biased
as clearly illustrated in FIG. 5. The ?nal movement of
downward by the spring 44, as viewed in the drawings.
the plunger 42, die sleeve 30 and heading punch 52 will
take place after the retraction of the backing punch 23
has commenced, and will cause the Work pieces 24 to be
raised slightly above the top surface of the stationary
To effect a releasable inter-lock between the outer sta
tionary sleeve 26 on the one hand and the inner movable
sleeves 30 and 42 on the other hand there are provided, in
accordance with the invention, locking members. These
are in the, form of balls 47 which are carried in recesses
48 in the lower portion 42a of the plunger 42. The balls
sleeve 26, by an amount equal to the thickness of the
headed portion of the rivet.
Further, in accordance with the present invention,
47 may be received, in part, in openings 50 provided in 35 means are provided for now locking the raised material
supporting sleeve 30 and plunger 42 in the position of
the outer stationary sleeve 26. The said openings 50 are
FIG. 5, this means being associated with the heading
registered with the recesses 48 carrying the balls, as
punch 52 and comprising a locking collar 57 which is
clearly shown in FIGS. 1 and 5, to maintain the locking
slidably carried by the punch 52, together witha collar
balls 47 in the positions wherein portions of them will
actuating spring 58 in the form of a helical compression
occupy the openings 50 in the outer stationary sleeve 26.
coil, said spring being also carried by the punch 52. Re
A novel control means is also provided which is associated
ferring to FIGS. 4 and 5, upon a continuation of the
with a heading punch 52 slidably mounted within the
raising movement of the punch 52, and as the latter
plunger 42 and material supporting sleeve 30. The lower
carries with it the plunger 42 and the material supporting
extremity of said means is affixed to the driving ?tting
sleeve 30, the ball-carrying recesses 48 in the plunger
16. The heading punch 52 has a portion 52a of enlarged
will again be brought into registration with the openings
diameter which is adapted to engage the locking balls 47
50 in the outer stationary sleeve 26, as in FIG. 5, thereby
and maintain the same in spread-apart relation, as shown
enabling the locking balls 47 to again partially enter the
in FIG. 1. When the balls 47 are so held, the plunger
openings 50. The halls are forced into these locking po
42 and the material supporting sleeve 30 will be securely
sitions by a camming action, by means of the locking
locked to the outer stationary sleeve 26 and the upper
col‘ar 57 which is spring-urged upward by the compres
end surfaces of the sleeves 26 and 30 will be ?ush with
sion spring 58, and the positions of these parts are shown
each other. For such condition, the material supporting
in FIG. 5 wherein the plunger 42 is again locked to the
sleeve 30 may function truly as a die in conjunction with
outer stationary sleeve 26.
the work pieces 24, whereupon driving force supplied to
Upon the heading of the rivet being completed, the
the rivet 28 will enable the latter to constitute a punch,
so as to pierce the work pieces 24 and punch out the slugs
32 therefrom. Prior to such punching, the rivet 28 will
be sitting on top of the work pieces 24 with the driver 23
in a raised position (not shown). Descent of the driver
23 then effects piercing of the work pieces 24 by the 60
punch.
In accordance with the invention, the heading of the
rivet 28 which has thus acted as a punch and has passed
through the work pieces 24 is accomplished by the heading
punch 52 in response to advancing or raising movement
of the punch, as imparted to it by a clockwise turning
movement of the bell crank 12 and a left-to-right move
ment of the connecting rod 11. The raising movement of
the heading punch 52 is illustrated in FIG. 4. As shown,
the enlargement 52a of the punch has left the locking balls
47. Under the action of the retracting spring 44, the lock
ing balls 47 will be cammed inward and forced out of the
openings 50 in the outer stationary sleeve 26. The
plunger 42 and the material supporting sleeve 30 will be
thus forced downward by the spring 44 after such releas 75
heading punch 52 is withdrawn to the starting position
shown in FIG. 1. During this action and movement of
the punch 52, the control collar 57 will remain in en
gagement with the locking balls 47 until the collar is
?nally forcibly displaced by the enlargement 52a on the
punch 52. Thus. the interlock which has been established
between the plunger 42 and the outer stationary sleeve 26
will be maintained at all times during the descent of the
plunger, whereby the material supporting sleeve 30 will be
held in its raised or advanced position in readiness for the
next riveting operation. From the positions shown in
FIG. 5 the parts are returned to the starting positions of
FIG. 1, and during such return the plunger 42 and the
material supporting sleeve 30 have been retained in their
raised positions, securely locked to the outer stationary
sleeve 26.
The connecting rod 11, bell crank 12 and the con
necting rod 14 may be considered as a power means for
effecting actuation of the heading punch 52.
In connection with the above action it will be noted
3,072,279
5
that the collar-actuating spring 58 at its lower end en
5
against the action of spring 81. As the tapered nose of
gages the driving ?tting 16, and that the size of the spring
the punch 520 engages the corresponding tapered bore
is then determined by the distance between the ?tting 16
and the enlargement 52a on the punch 52, less the length
portion of the material supporting sleeve 3%, pressure to
of the locking collar 57 and the space between the latter
and enlargement as shown in FIG. 1.
It will be noted that in the above construction relatively
line 70 is cut off and the continued movement of punch
520 will carry with it sleeve 3%. As the punch 520 and
the sleeve 3% engage the lower extremity of the rivet as
described with reference to FIGS. 1 to 5, the rivet will
few parts are employed, said parts being of simple struc
ture and being easily economically fabricated. More
be headed and spread apart.
While the invention has been described in some detail,
over, an effective support is given to the work pieces for 10 it will be understood that variations and modi?cations
may be made Without departing from the spirit thereof
or the scope of the appended claims.
I claim:
die element is retracted and then advanced with the head
ing punch to effectively head over the rivet and join to
1. In a riveting machine, in combination, a workpiece
gether the work-pieces. After the heading operation, the
supporting sleeve member mounted for axial movements
die sleeve is retained in its advanced position in readiness
in reverse directions, said member having an end portion
carrying out a punching operation utilizing the rivets,
thereafter the punched-out slugs are disposed of and the
for the next riveting operation.
Another embodiment of the invention is illustrated in
FIG. 6. In this embodiment there is shown a material
supporting sleeve 300 carried by a plunger 420‘, said
sleeve and plunger being shifted to retracted positions
after being unlocked from an outer stationary sleeve 260,
by means of pressurized ?uid introduced through a tube
70 and acting against a shoulder 42011 on the plunger
420. The plunger thus constitutes a piston, whereas the
outer stationary sleeve 260 constitutes a cylinder there
for. Suitable O-rings are carried by the plunger 420, as
shown, to provide for sealing engagement with the outer
sleeve 2649.
Advance of the plunger 420 and the material support
ing sleeve 3% is effected by a helical compression spring
'72 engaged with the plunger 420 and with a stationary
nozzle member 74 carried within the sleeve 2-60 against
a retainer ring 75 thereof.
Retraction of the heading punch 520 is effected by a
constituted as a die for engagement with workpieces to
support the same for piercing by rivets, and being pro
vided with a bore commensurate in size with a rivet shank
whereby the rivet may act as a punch to pierce the work
‘ pieces; a driving member disposed adjacent the die-con
stituting end of the sleeve member, said driving member
being engaigeable with a rivet for the purpose of effecting
said piercing of the workpieces; said driving member being
adapted to ‘be advanced toward said rivet whereby rela
tive advancing movement between said members cause
an intervening rivet to punch through workpieces disposed
between the members; means for effecting retracting
movement of said sleeve member relative to said driving
member; a rivet heading punch extending through the
sleeve member; and means for effecting relative advancing
movement between the driving member on the one hand
and the rivet-heading punch and sleeve member on the
other hand, to head over the rivet after it has pierced the
workpieces.
helical compression spring 81 engaging the enlarged por
2. The invention as de?ned in claim 1, in which the
tion 520a of the punch and an internal annular shoulder
means for effecting reiative advancing movement between
within the plunger 420, as shown. The advancing move—
the said members comprises a plunger connected with
ent of the heading punch 520 is effected by ?uid under
one of said members, and comprises a power means en
pressure which is introduced through a tube 77 into the 40 gaged with the said plunger for driving the same.
nozzle part 74, said fluid acting against the lower end
surface of the punch 520, this bottom surface being on
an enlarged lower portion of the punch which carries an
O-ring and functions as a piston. The nozzle member
74 also has an O-ring for sealing purposes, and the
plunger 42th constitutes a cylinder for the lower enlarged
portion of the heading punch 520, as will be understood.
Aligned vent openings 79 and 89 are provided in the
outer sleeve 2m and the machine bed 10, to provide for
freedom of movement of the plunger 4-20.
The locking balls 47 are under the control of the en
larged portion 520a of the heading punch 520, as in the
previous embodiment of the invention. When the punch
520 is advanced, the balls 47 will be released, unlocking
the plunger 42%} from the outer sleeve 260 and permitting
the plunger and the die sleeve 3% to be shifted down
ward or retracted against the action of the spring 72 by
air introduced into the tube 70.
it will be understood that the piston and cylinder con
stituted by the plunger 42!} and the stationary sleeve 260
means
3. The
for invention
effecting relative
as de?ned
retracting
in claim
movement
1, in which
between
the members comprises a plunger connected with one
member.
4. The invention as defined in claim 1 in which said
last named means include cooperating engageable and dis
engageable abutting portions formed on said rivet heading
punch and said sleeve member, said abutting portions
being rendered engageable to effect concurrent movement
of the punch and sleeve member when the punch is being
driven toward said driving member.
5. In a riveting machine, a movable work-supporting
sleeve shiftable between advanced and retracted positions
and having an end portion constituted as a die for en
gagement with workpieces to support the same for pierc
ing by rivets, said sleeve being provided with a bore com
mensurate in size with a rivet shank whereby the rivet may
act as a punch to pierce the workpieces, said sleeve fur
ther having a small hole and a second and larger hole in
60 its side walls at the said end portion; and a stationary
respectively may be considered as a power means.
compressed air ori?ce disposed adjacent the said end por
By alternately applying compressed air to the tubes 76,
tion of the sleeve, said ori?ce being directed at the small
'77 the movements of the punch 52% and the plunger 420
hole of said side wall when the sleeve is in its advanced
carrying the die sleeve 30% may be controlled in a man
ner described above in connection with FIGS. 1-5. More
speci?cally the operation of the modi?ed embodiment as
illustrated in FIG. 6 is as follows. Applying an air pres
sure to lines '77 will cause the punch 520 to move up
wardly. Upward movement of punch 520 thus displaces
the enlarged portion 526a thereof permitting the locking
balls 47 to be cammed inwardly so as to release the
plunger 42% from the stationary sleeve 260. The cam
ming of the locking balls 47 to release plunger 424) is
effected by applying air pressure on shoulder portions
position so as to effect an injection of air into the bore of
65 the sleeve and to effect an ejection through the large hole
of the sleeve side wall, of slugs deposited in the sleeve
bore. when the workpieces are pierced.
6. The invention as de?ned in claim 5, in which there
is an outer sleeve surrounding and movably carrying the
work~supporting sleeve, and in which the said outer sleeve
has a side opening comprising the said ori?ce and having
means for connection to a source of air under pressure,
said side opening being registrable with the said small
hole of the work-supporting sleeve to introduce air there
42% through line 70 to force the plunger downwardly 75 to.
3,072,279
8
7
7. in a riveting machine, in combination, a work-sup
porting die sleeve mounted for axial movements in reverse
directions; a rivet heading punch disposed within said
sleeve and arranged to be longitudinally movable therein;
releasable locking means for locking the sleeve in a
given operative position, said means including a movable
part comprising a locking member extending into the said
sleeve; means on said punch engageable with the locking
stituting a portion of the said releasable locking means for
the sleeve.
13. The invention as de?ned in claim 9, in which the
means effecting retraction of the sleeve comprises a heli
cal compression spring which becomes operative when
the locking means is rendered inoperative.
14. The invention as de?ned in claim 9, in which the
locking means includes a projection on the heading
punch, and includes locking members engageable with
member to block the same and maintain the said locking
means operative; and a collar movably carried by the 10 the said projection to effect locking of the sleeve.
punch Within the sleeve and engageable alternatively with
15. The invention as de?ned in claim 9, in which the
the said member to similarly block the same for holding
locking means for the sleeve includes locking members
the locking means operative during retracting movement
movably carried by the sleeve, ‘and in which there is means
of the punch and prior to blocking of the locking member
by said means on the punch, the said sleeve being dis
movably carried by the punch and engageable with
15 the said locking members, for effecting a locking of the
placed and shifted out of such blocking engagement by
said means during retracting movement of the punch.
sleeve in its advanced position after it has been returned
thereto by continued advance of the punch.
8. The invention as de?ned in claim 7, in which the
means on said punch which is engageable with the locking
16. The invention as de?ned in claim 15, in which the
means movably carried by the punch comprises a locking
member comprises a projection extending laterally from 20 collar longitudinally movable thereon, and in which there
the punch, said projection having a camming surface
is a helical compression spring carried by said punch and
which initially engages the locking member.
engageable with the said collar, to bias the latter in a
direction tending to engage it with the said blocking mem
9. In a riveting machine, in combination, a work
bers.
piece supporting sleeve mounted for movement between
advanced and retracted positions, said sleeve having an 25
17. The invention as de?ned in claim 9, in which the
end portion constituted as a die for engagement with work
means for effecting retraction of the sleeve includes a
pieces to support the same for piercing by rivets and being
piston and cylinder structure, having means for connec
provided with a bore commensurate in size with a rivet
shank whereby the rivet may act as a punch to pierce the
tion to a source of ?uid under pressure.
sleeve for heading rivets which have pierced the work
piece, means on said punch for rendering said releasable
to a source of ?uid under pressure.
18. The invention as de?ned in claim 9, in which there
work pieces, releasable means for locking the sleeve in 30 is means for e?Fectin'g advance of the punch comprising a
its advanced position, a heading punch movable in said
piston and cylinder structure having means for connection
19. The invention as de?ned in claim 9, in which the
locking means inoperative in response to the initial ad
means for returning the sleeve to its advanced position
vance of said punch to enable the sleeve to be retracted 35 comprises a helical compression spring engaged with the
after such initial movement of said punch, means for
said sleeve, and in which the means for effecting retrac
tion of the sleeve comprises a piston and cylinder struc
effecting retraction of said unlocked sleeve, and means
for returning the sleeve to advanced position with con
ture adapted to oppose the action of the said spring.
tinued movement of said punch.
20. The invention as de?ned in claim 9, in which there
10. The invention as de?ned in claim 9, in which there 40 is means for effecting a retraction of the punch, com
is a holder disposed around and carrying he said sleeve,
prising a helical compression spring, and in which there is
and in which the means for locking the sleeve comprises
means for etiecting an advance of the punch, comprising
loc.:ing members adapted to be engaged between the
a piston and cylinder structure adapted to oppose the
sleeve and the said holder.
action of the said spring.
11. The invention as de?ned in claim 10, in which the
References Cited in the ?le of this patent
locking members comprise balls, and in which the sleeve
has recesses in which the balls are carried and in which
UNITED STATES PATENTS
they are movable.
395,868
Beale et al. ____________ __ Ian. 8, 1839
12. The invention as de?ned in claim 10‘, in which the
1,605,829
Franz ________________ __ Nov. 2, 1926
holder compirses an outer stationary sleeve surrounding
and carrying the said workpiece supporting sleeve, said
outer stationary sleeve having abutting shoulders con
2,216,403
2,652,942
Oekl et al ______________ __ Oct. 1, 1940
Muchy ______________ __ Sept. 22, 1953
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