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Патент USA US2132112

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4, 193s.- '
1.. c. HUCK
Filed March 6, ‘1936
Sheets-Sheet l I
1 all: s C’. Huck.
y 744.”,
Oct. 4, 1938.
|_. c. HUCK
Filed March 6, 1936
4 Sheeté-Sheet 2
.a2.5 .
Jauz's C ?ue/Ir.
Patented (Pet. é,
2,132,112 '
our stares PATET OFFICE
Louis C. Huck, Buchanan, Mich., assignor to
Huxon Holding Corporation, a corporation of
Application March 6, 1936, Serial No. 67,458
14 Claims.’ (Cl. 218-19)
This invention relates to a rivet setting machine tional views taken on the line l—l, 5-5, 6-6,
adapted to set the type of rivet disclosed in the '|-—‘I, 8—8 and 9-9 of Figure 1, respectively.
Figure 10 is a, longitudinal section taken on the
applications of Louis C. Huck, Serial No. 627,343,
line l0—l0 of Figure 3.
?led August 3, 1932, now Patent No. 2,061,628 is
Figure 11 is a horizontal section looking up- 5
6 sued Nov. 24, 1936; Serial No. 681,362, ?led July
20, 1933, now Patent No. 2,061,629 issued Nov. 24,
1936, and the particular form of the rivet dis
closed in Serial No. 21,473, ?led May 14, 1935.
An object of the invention is to provide a single
anvil rivet gun forsettin'g the above type of rivet
as distinguished from the double anvil guns shown
in the application of Louis C. Huck et al., Serial
No. 636,480, ?led October 6, 1932, now Patent No.
2,053,719 issued September 8, 1936, and the appli
15 cations of Louis C. Huck, Serial No. 21,472, ?led
May 14, 1935, and Serial No. 21,474, ?led May 14,
1935, now PatentNo. 2,088,859 issued August 3,
1937, and to provide a single anvil gun which is
adapted to set a rivet in the manner set forth in
20 the application of Louis C. Huck, Serial No.
‘21,473, ?led May 14, 1935.
One object of the invention is to provide an im
wardly and taken on the line ll-H of Figure 1.
Figure 12 is a side elevation of the sleeve which
carries the pin gripping element showing in eleva
tion the structure illustrated in section in Figure
4, with a portion of the outer casing broken away.
Figures 13, 14 and 15 are enlarged sectional
views of the anvil end of the gun, corresponding to
the section shown in Figure 1, and illustrating
three different operating ‘positions of the mecha
Figures 16, 17 and 18 illustrate, respectively,
modi?ed forms of the anvil and rivet head eject
ing elements.
Fig. 19 is a diagrammatic view of the rivet gun
and pressure supply means therefor.
Referring to Figure 1, the gun illustrated com
prises a casing l0 provided with an enlarged lon
proved anvil construction for a single anvil gun
gitudinal opening therethrough for the reception
of the type disclosed in the aforesaid application,
Serial No. 21,473.
Another object is to provide means in conjunc
of an operating piston II, and as shown by Fig.
11, the upper part of the casing is provided with 2
a pair of smaller longitudinal bores 12 and 13.
As shown in the latter figure, the bore I3 is thread
tion with a single anvil rivet gun to eject‘the
rivet head from the anvil. ’
Another object of the invention is to provide a
30 greatly simpli?ed and more powerful single anvil
rivet gun of the type mentioned.
_ ‘
Another object is to provide ascavenging means
whereby any air or other foreign matter in the
operating ?uid will be removed from the gun dur
ing the normal operation thereof.
Another object is ,to provide an improved trig
ger and handle construction adapted to ‘be readily
operated in any position of the gun.
Another object is to generally improve the de
40 tails of construction in order to provide a gun
which is relatively inexpensive, rugged and easy
to assemble.
The bore l2, at the corresponding end
thereof, is likewise provided with a coupling mem
ber by means of which it is connected to a pressure
?uid conduit l5. These pressure conduits are
connected to a suitable source of pressure through 35
a control valve which is operable in one position
to supply ?uid under pressure, to one conduit and
at the same time to connect the other conduit to
exhaust, and which is operable in another posi
tion to supply ?uid under pressure to the latter 40
conduit, and at the same time to connect the
former conduit to exhaust._
Other objects and__advantages of the invention
will become apparent from the accompanying
'- drawings, speci?cation and the appended claims.
In the drawings wherein like numerals are ap
plied to like parts in the several views:
Figure 1 is a longitudinal vertical section of the
gun showing its internal construction.
Figure 2 is a plan view of the gun, partly broken
ed at one end to receive a threaded coupling mem
her by means of which a pressure fluid conduit
l4 may be connected in communication with the 30
Such pressure supply means and control valve
is disclosed in detail in the copending application
of Louis C. Huck, Serial No. 21,474, ?led May 14,
1935. As shown diagrammatically in Fig. 19 vof
the present application,.this means comprises a
?uid reservoir l, a pump 2, a control valve 3 hav
ing operating solenoids 4 and 5, and a pressure
booster cylinder 6, connected by suitable conduits 50
with each other and to the gun. , The arrange
ment is such that, in one position of the control‘
Figure 3 is an end view of the operating end of . valveh?uid is supplied from the pump through the
the gun.
control valve to conduit l5 while the conduit I4
Figures 4, 5, 6, 7, 8 and 9 are transverse sec
is connected through the valve to the exhaust“
reservoir. When the valve is'shifted from said dex'?nger of the hand regardless of the position I
position by the solenoid 5, the pump supplies ?uid ~ of the gun.
When it is ‘desired to initiate the action of the
through the valve to the large cylinder 8 of the
booster and the small cylinder 9 of the booster is gun, either one or the other of the trigger mem- placed in ?uid communication with conduit l4. bers may be pressed. This ?exes the intermedi
At this time conduit I5 is connected through the _ ate portion of the spring 26 upwardly into opera
valve to the exhaust reservoir. It will be apparent tive engagement with an actuating element 31 of
a suitable electric switch 38 positioned within the
hollow portion of the handle and ?xed to-the
a source of ?uid under pressure while the other , handle by- means of pins 39. The switch may 10
that a‘sthe solenoids are alternatively operated ?rst
one of the conduits. l4 and I5 will be connected to
is connected to exhaust and thenthe ?rst will be
connected to exhaust while the othe. is connected
to a source of ?uid under pressure. Moreover, the
pressure supplied to the conduit I 4 will be aug
15 mented by the booster 6.
be any suitable single pole double ‘throw switch
adapted to alternatively energize one or the other
of the solenoid operating elements disclosed in
the aforementioned application, Serial No. 21,474.
The switch is designed to maintain the circuit
As shown best in Figure 1, the handle, indi ' closed through solenoid 4 so long as pressure is
cated generally at l6, comprises an attaching applied to one of the triggers, but will open that
portion I1 secured to the top of the casing by circuit and close the circuit to the opposite sole-1
any suitable means, such as stud bolts‘ l8, and a
hollow hand engaging portion l3 connected in
29 tegrally
at each end to the corresponding end
of the attaching portion I‘! by curved connecting
portions 20 and 2i respectively. It will be noted‘
that the hand engaging portion is symmetrically
25 proportioned with respect to the axis of thegun
noid 5 when the pressure on the trigger is re
leased. As the result of this- arrangement the
conduit I5 will normally be connected to the
source of pressure while the conduit I5 is con
nected to e aust. When the trigger is pressed,
however, conduit 'l5 is connected to exhaust and
the conduit 14 is connected to the high pressure 2.5
and ,is parallel therewith. In addition, the han
dle is‘ positioned above the center of gravity of
cylinder 1 of the booster.
25, respectively. These trigger members are‘
identical; although oppositely disposed, and each
the borev I3, it will be eifective upon the left hand
end of piston H, and will move. the piston to the
pair of pins 23 carried by the trigger member.
reciprocation of piston I I in the main cylinder»
will be accompanied and caused by‘ reciprocation
-The bore I3 is in constant'communication with
the gun in order that the gun ‘will remain in a _ the left hand end of the main operating cylinder
through ‘a port 4|, as, shown in Figures 1 and'l,
level position when supported by the handle dur
30 ing horizontal riveting. Adjacent the opposite while the .bore 1 2 is in constant communication 30.
ends of the hand engaging portion the under side , -with the right hand end of the main operating
cylinder through port 42, as shown in Figures 1-.
thereof is cut away‘ at 22 and 23 to provide open
ings for the reception of trigger members 24 and and» 8. Thus, when'?uid pressure is applied to
is connected to a leaf spring 26 adjacent the op-. right, as viewed in Figure 1, while, application of
?uid pressure through the bore l2 will effect
posite ends of the latter. This connection is ef
fected by inserting one end of the spring in a ‘ return movement of piston II to the left.
slot 28 in the upper side of the trigger and , Itwill be noted that by reason of the ?uid
40 securing it in position therein by means of a pressure operating connections so far described,- _
The opposite ends of the leaf spring 26 are
mounted in slots 30 in the handle portions 20 and of liquid columns in the bores and conduits re
.2l respectively, and are held in ?xed position spectively. Some liquid will be exhausted'fromv
-with respect to the handle by clips. 3| which in one conduit at that end'remote with respect to
turn are secured to. the handle by means of studs the gun during each stroke of the piston and like
32 and extend into slots in the ends of the leaf r-wis‘e additional liquid will be supplied to the end ‘
‘ spring at 33. The leaf spring extends through of the other conduit.v If the conduits are short,
some liquid in the gun will be also exhausted
the hollow portion'pf the handle and itsv inter
and likewise fresh liquid will ?ow through the
50 mediate portion- is twisted 90° with respect to the
vertical end portion, as at 34, to provide increased other conduit into the gun. On the other hand
?exibility in a vertical plane and has an o?'set if the conduitsare long, the liquid in the gun
, U-shaped central portion 35 engaging a pin 36 normally would remain in the gun and conduits
and only liquid columns in the exhaust and sup
carried by the handle portion I9.
For the purpose of limiting movement of the ply ends of the conduits, that is the ‘ends re
mote. from the gun, ‘would be‘ exhausted and re
trigger elements upwardly and thereby prevent
ing possible damage to the leaf spring and switch supplied with fresh .oil. ,Under any set of cir
element 31 as well as other parts of the switch, a cumstances where ‘the same liquid is apt to re
stop 40 is provided above each trigger. Thus,
' to
even if the operator presses very hard on the
main in the gun, it is desirable. to obtain a re
placement of this liquid, or else any dirt and
other foreign matter, and especially air, which
might collect in the gun, would permanently be
trigger, the ?exing of the spring and actuation
of the switch is e?ected the same as if the trig
ger were moved easily against the stop. This
trapped. .To obtain this replacement of liquid
arrangement is designed to promote durability
will causea progressive change of the liquid dur
65 of the switch actuating parts while at the same
time to insure positive actuation of the switch.
It will‘ be observed that by reason of the sym
metrical proportioning and position of the han
70 dle that it may be grasped readily in any posi
tion of the gun. Moreover, since the trigger
members are duplicated and are likewise sym
metrical with respect to the main hand engag
ing portion, one of said ‘trigger members will be
76 in position to be grasped and operated by the in
in .the gun, a scavenging valve is provided that
ing repeated operation of the gun or a slow con- '
stant change during idle periods of the gun, pro
vided of course in the latter case that the pump
or other pressure developer is'constantly oper
' '
The scavenging valve, as best shown in Figures
10 and 11, is shown positioned within the left
hand end of the low pressure bore l2. It will be
noted that the'bore l2 at its left hand end is
somewhat‘ enlarged to provide a shoulder 45 and 76
that the enlarged portion opens to the left face
of casing 10. Positioned within the enlarged por
tion of bore l2 and seated against shoulder 45 is
an annular member 46 having a small axial bleed
5 opening 41, Atvalve cage'48 is seated against
member 45 and a packing ring 49 is positioned
between these members to prevent leakage along
the wall of the bore. .The valve cage 48 is held
against the packing 49‘ by means of an assembly
event any air tends to remain in the cylinder, it
tends to disperse in the liquid (oil) during move
ment .of the piston back and forth, and by replac
ing the‘ oil, the air also is removed in this manner.
During idle periods when the gun is not oper
10 comprising a ?anged tubular member 50, which
is seated against cage member 48, a packing ring
scavenging valve.
5| seated against member 50, a cap member 52
which is seated against the packing ring 5|, and
' a screw threaded plug 53 which is screwed into
ated, but the pump is running, a constant scav
enging action will take place as the liquid will
constantly ?ow through the bore l2 and leak
through the opening 41 and pass through the
Piston II is forged integrally with a tubular
piston rod having a section ‘I0 ‘to the left of the
piston, as viewed in Figure 1, which is of smaller
external diameter than the section ‘II at the right
15 the open end of the enlarged portion of bore 12 hand side ofithe piston. Leakage past the piston 15
and bears against the cap 52. The valve cage rod section ‘H is prevented by a packing gland
48 has an axial bore for the reception of a slid
comprising a gland nut 12 threaded into the cas
ing valve 54, and an axial port 55 of smaller ing l0 and bearing against suitable packing rings
diameter than said bore, and in communication 13 which surround the piston rod and seat against
20 therewith. The ‘juncture between the bore for an internal radial projection ‘I4 adjacent the right 20
receiving valve 54 and port 55 forms a shoulder hand end of the operating cylinder. ,
against which a reduced end portion of valve 54
The gland nut has an annular series of castella
is adapted to bear, and thus limits movement of tions 15, as shown in Figure 9, into which a tool
the'valve to the right. The cage member 48 is may be inserted to tighten the gland. Means for
25 provided with a lateral port 56 in communication locking the gland nut in adjusted position are 25
with the interior of the cage, a circumferential provided comprising a recess 15 adjacent the
recess 51 in its, outer periphery, and a longitudinal bottom‘portion of- the casing ill into which is
external groove 58 providing ?uid communica
inserted a, locking member 11 having a projec
tion between port 55 and recess 51. Recess 51 is tion adapted to extend into one of the notches
so in ?uid communication with the left hand end
I between the annular series of.castellations. _ The
of the interior bore of cage member 48 through
‘a radial slot 59 in the end of the cage member,
and is also in communication with the left hand
end of thexmain cylinder bore of casing l0 through
35 a diagonal conduit or port 60, shown in Figure
10. Valve 54 is provided with a stem 5i, and a
locking member 11 is held in position by any
suitable means, such as‘ a cotter pin 18, as shown
in Figure 9.
A bearing or ‘guide sleeve 80 is provided ex
teriorly of the packing gland for guiding the pis 35
ton rod section ‘H. This bearing member is held
helical spring 62, positioned within a housing 1 in position against an abutment on the casing
formed by members 50 and 52, surrounds the stem by means of an annular nut 8! which is threaded
‘ti and bears at its opposite ends on the valve 54 into the opening in the casing ill. The annular
40 and the cap 52 respectively, thus urging the valve nut 8! has a tubular extension 82 upon which is 40
member to the right as viewed in Figures 10 carried a guard member 83 secured in position.
by any suitable means such as a split ring having
and 11.
When liquid pressure is applied through bore It ears 84 through which a tightening bolt 85 is
to the left hand side of the operating piston ll, , inserted. At its outer end the guard 83 is curved
45 it acts by reason of port 60, recess 51, groove 58, downwardly and then reversely as indicated at
and slot 59, on the left, hand end, of valve member 86 and 87 respectively and the purpose of this
56. Since bore i2 is open to the exhaust tank constructionwill presently be described.
The left hand end of the operating cylinder is
at this time, the valve \will be held in closed posi
‘tion and against the shoulder around port 55 and closed by means of a cylinder headall seated
50 no fluid can ?ow from bore l3 into bore l2,
However, when the ‘operating connections are re
versed and liquid pressure is applied to bore l2
and exhaust to bore l3, the ?uid in the low pres
sure bore I! will leak through the bleed opening
55 fil‘and build up suf?cient pressure at the right
hand side of valve 54' to shift this valve to the
left against the pressure of spring 62 thuszopen
ing communication between port 55 and port .55
of the valve cage 48. When this occurs a limited
50 quantity of the ?uid in bore It‘ will ?ow through
bleed opening 41, port 56, groove 58, recess 51, and
' port 55 to the left hand end of the operating
piston ll. This limited‘?ow from the bore l2 into
the left hand end of the main operating cylinder
against a shoulder on the casing and held in
position thereagainst by means of an annular
hexagonally headed nut 91 which is threaded
into the casing. The nut 9| is. provided with a
plurality of radially extending holes 91 adjacent
its outer face, and a wire 98 is passed'through 65
one of these holes and through a hole in the
adjacent edge of the casing. The “ends of the
wire are twisted together as shown in Figures 2
and 3, to prevent accidental rotation of the nut.
The cylinder head 90 is provided with an elon 60
gated tubular extension 52 within one portion of
which ismounted a packing gland comprising a
gland nut 93 having an annular series of cas
tellations 93' for the reception of a suitable tool
65 is insu?lcient to interfere with the normal return for turning the nut, and having ‘a portion hear
movement of the piston under the in?uence of ’ing against a series of packing rings 94 which
low pressure at the right hand side thereof, but seat against an internal shoulder in the cylinder
it is e?ective to carry air or other foreign material head opening. The tubular extension >92 of the '
which may be trapped in the_?uid in bore l2 over cylinder head 95 is provided with a longitudinally
70 into the left hand end of the main cylinder, extending slot 95 into which a tool may be in 70
where it can exhaust into the bore it through serted for engaging the castellations on the gland
port 45. During ‘succeeding operations of the nut; and a retaining ring 96 is carried in a cir
gun this ?uid with any entrapped air or foreign cumferential groove on member 92 and has one
matter will progress back through the conduit end thereof extending through slot 95 into en
75 i5 line to the storage reservoir or tank. ' In the gagement withthe recess between two adjacent: 76
2, 182,1 12
castellations on the gland nut to maintain it in
adjusted position, as shown in Figure 6.
Outwardly of the gland nut 93, the tubular
engagement with jaws Il0. Avguide sleeve I32 '
for spring I3I is held in position against the end
of piston rod section 10 by an internal shoulder
member 92 is provided with an internal shoulder
against which is seated a bearing or guide sleeve
on sleeve "-2.
I00 for the piston rod section ‘I0. Bearing sleeve
I00 is held in position against the internal shoul
der on the tubular extension 92 by means of an
annular nut IOI _which is threaded into the
left hand extremity of barrel I0_6 carries an an
nular anvil supporting block I35 which is
threaded into the end of barrel I06 and bears
As best shown in the enlarged Figure 13, the
tightly against an annular member I36, which in .
turn is seated against an internal shoulder I31
on the barrel I06. An annular anvil I38 is seated
within the opening in block I35,'and is provided
in Figure 5. Member 92, adjacent the castella
tions in nut IN, is provided with an annular with an external shoulder adapted to seat against
series of radial openings I03, and a spring retain- ' a corresponding shoulder in that opening, ‘The
ing ring I04. is positioned within an internal opening within anvil I38 is provided with an 15
groove in the series of annular castellations on annular conical outwardly ?ared mouth forming
an inclined working surface I39 adapted to en
nut IOI,_ and has a bent up exten'sion I05 extend
ing into one of the radial openings I03 of the gage a corresponding surface on the head I40 of
the tubuluar member I4I of the two part rivet.
tubular extension 02.
A barrel I 06 is provided with an enlarged end As set forth in the aforementioned application, 20
section I01 which is telescoped over the end of Serial No.‘ 21,473, this anvil is adapted when the
tubular extension 92 and threaded thereto at I08. reaction force increases beyond that required to
The thread bearing end of the barrel section I0'I form the head on the opposite end of the tubu
is provided with a hexagonal exterior periphery lar member to advance over and swage head I40
as shown in Figure 5 for engagement with a onto the rivet pin I42.
wrench, and the internal shoulder adjacent the 8 An ejecting member I50 is slidably mounted
juncture of the smaller and larger sections of the within the cylindrical portion of the opening in
anvil I38 and is adapted to surround the rivet
barrel is seated against the end of tubular ex
pin’ I42. A shoulder. I5I on the ejecting member
tension 92, at I09.
A pin gripping means is connected to the left is adapted to engage a corresponding shoulder on
hand end of the piston rod section ‘I0. This the opening within anvil supporting members I35
means comprises a plurality of jaw members I I0 as well as the inner face of the anvil itself and
limit movement of the ejecting member to the
of the type disclosed in the aforementioned co
pending application, Serial No. 21,474. These left, as viewed in the drawings. An opposed
shoulder I52 on the ejecting member is adapted
jaw members, three in number, are loosely posi
tioned within a jaw pulling sleeve- III, and the to engage the annular member I36 and limit
jaws and sleeve I I I have inclined co-acting faces movement of the ejecting member to the right
whereby the application of a pulling force by said with respect to the anvil. The left end of the
sleeve effects an inward radial movement of the ejecting member is adapted to engage the end
jaw members. The sleeve III is threadedon a face of the rivet head I40 and this in conjunction
sleeve member H2, and a suitable locking means with the shoulder I52 engageable ‘with the mem
is provided for locking sleeve members-4H and ber I36, provides an e?icient means for?positively
H2 against relative rotation. v This locking preventing further swaging movement of the
anvil after su?icient swaging is effected. It has '
means, as shown in elevation in Figure 12, com
prises a ring II3 having oppositely offset por
been found that under certain conditions, the
tions H4 and H5 adapted to engage respectively ‘anvil should engage the plate to effect the de
in a notch H6 in sleeve III and in one of a sired swaging movement and, therefore, it is de
plurality of notches II‘! in a shoulder on sleeve sired that the ejecting ‘member be arranged to
I I2. Four circumferentially spaced holes H8 are permit su?icient movement of the anvil to ac
provided in sleeve III to be engaged by a tool for complish the swaging necessary. I
The ejecting member at its inner end has an
rotating the same when the-locking member H3
10 tubular extension 92 and which is provided with
an annular series of castellations I02, as shown
abutting surface I53 adapted to engage the end
of sleeve III. Upon completion'of the rivet set
threaded on the left hand end of the piston rod ting and swaging operation, and after‘ the trigger
55 section 10, and is locked in position thereon by is released, sleeve member III will advanceto' 55
means of a pair, of tapered pins I20 and I2I‘ the left with respect to barrel I06, during which
has been retrieved.‘
As shown in‘Flgures l, 4 and 12, sleeve H2 is
which are driven into suitable openings I22 and
movement it will come into abutment with the
I23, respectively, in the enlarged end of sleeve
surface 153 on the ejecting member I50. Since
the latter will engage the rivet head, the ?uid
These openings at their midpoints inter
60 sect the opening within sleeve -I I2, and at the ' pressure in the casing I0 will act against the right 60
points of intersection the pins engage a ring I24
of soft metal which surrounds piston .rod section
‘I0 and bears on a series of axially extending ser- _
rations in the piston rod, not shown. It will be
65 observed that when pins I 20 and I2I are driven
into these openings, sleeve H2 and the associated
' sleeve II I. will be locked to the end of the piston
rod section 10, but that when necessary they may
be readily removed therefrom.
A relatively heavy jaw' follower I30 is slidably
carried within the cylindrical portion of sleeve
“Land is adaptedto be-contacted by jaws H0.
end of the cylinder and move the casing, barrel
I06 and anvil I38 away from the‘ rivet head as
shown by Fig. 15. Iii this way,'the anvil is freed
from any grip it may have with the rivet head.
In Figure 16 is shown a sligh 1y modi?ed form.
of the ejecting member and a vil mounting. In
this ?gure the anvil I55 is mounteddirectly upon
an end portion of sleeve member I06. The anvil is
formed as before except that at its inner end it is
provided with an internal radially extending 70
shoulder I56. The ejecting member I 51 is pro
vided with a pair of external axially spaced
A spring I3I bears at one end against sleeve H2‘ radially extending shoulders I58 and I50 adapted ‘
and at the other end against an internal shoulder to engage with shoulder I56 to limit the move
on the inertia member I30 and holds the latter in ment of the ejecting member with respect to the
' anvil for the purposes set forth above in conneci
_ tion with the structure, shown in Figures '13 to 15.
tact with the opening in the plates us and m. as
shown‘in Figure 14. Substantial completion of '
he noted that the inner ?ange or shoulder the head ,forming pin movement places the cir
I89 on the ejecting member is made of a separate cumferential grooves I48 .on the pin within the
piece and the latter is either press ?tted‘on the a head of the tubular member. and it positions the
ejecting member or the end of the latter may relatively dee?circumferential groove I 40 in the
be peened over to lock the piece in place. In pin adjacent the end face .of the rivet head.
this --modi?cation, as in the ejecting member Thereafter the pulling forceTon the pinis in
shown by Fig. '13, the mouth of the opening in ‘ creased and , the resulting increased reaction
10 the ejecting member is ‘provided with an cute force on the swaging anvil e?eci's movement
wardiy ?ared conical annular month which is
adapted to assist in inserting the” end of a rivet
pin within the gun. and into engagement with
the vgripping member. This form of the inven
15 tion functions in the manner indicated with re¢
spect to that previously described.
. In Figure 17 there is shown a further modi?ca'
' tion wherein the ejecting sleeve I00 is provided
thereof over the head with a consequent inward
radial movement of the metal in the head into the
grooves I48 in the rivet pin. Asshown in Figure
‘14 the swaging movement or the anvil I88 with
respect to the rivet head I40‘is under way and is 15
nearly completed. It will be. understood that the
spreader ring expands during the setting opera
tion and prior tov breakage of the ‘pin, so that '
with a radially extending ?ange IOI having an" movement of the head on the‘ pin intogthe tubu
20' enlarged tubular axial extension I02 engaging lar-member is highly resisted when theten'sion on ‘20
barrel I06 and extending into an annular recess the pin is increased to tighten the rivet or to
in, the end of sleeve member I II. The tubular break the pin.
As stated previously, the arrangement of parts
extension I02~of the ejecting member is prefer
ably fixed to sleeve III, but may loosely engage' . is such that the ejecting member‘. or shoulder on
the sleeve III, if desired.v In- either‘ case the the anvil, as the case maybe, does not act to pre
ejecting sleeve will move rearwardly, or to the
vent the amount of swaging desired. If it is de
right as viewed in the drawings, with respect to
sired to have the anvil" movable 'to engagement
the7anvil during the rivet setting operation and
with the plate I43, movement of-the rivet head
cannot be relied upon to limit the swaging move
80 ment'of'the anvil with respect to the rivet head.
_ I40 ihto the anvil to permit this engagement vis
necessary.' It iito beunderstood therefore that ~30
the ejecting member or shoulder on the anvil '
Accordingly; in this modification the swaging an
vii I63 is itself provided with a rhoulder I64 which should permit the amount of movement of the
is adapted to engage the end of the rivet and rivet head I40 into the anvil that may be required
limit, the movement of‘ the awning anvil over the to obtain a properly set and'swaged rivet as-_
35. head. During the return ofv the parts of the gun sembly. After proper swaging is effected, move
ment of the anvil'wlll be resisted more highly,
to normal position, sleeve I06, as previously de
scribed, moves to the left with respect to the and tension on the pin: will be increased until it
sleeve III, thus moving the anvil I60 to the right
with respect to the ejector I60, thereby forcing
m the anvil away from the rivet head. In this modi
breaks at the break neck I49.
The machine is operated in the fcllowing‘man- .
ner., An assembled two part rivet comprising a do
?cation the ejecting member need not'have any
tubularmember HI and a rivet pin its is inserted v
bearing on the anvil per se. It will be noted that
the anvil and ejecting member may be readily as
is brought into position with the head on the tu- ,
sembled,_or disassembled. ' '-
bular member in abutment with the swaging'anvil
Y -1
4p. ' In Figure 18 I have disclosed still‘ another form
. 4 of ejecting member which is similar to that dis
into the opening in the plates and ‘then the gun
I30 and the-grooves I54 in the end of the rivet pin ' 45
in juxtaposition with the corresponding grooves
,. closed'in Figure 16 except that it is formed of a ‘ ‘IN-in the jaw members IIO.
vpair of telescoping-sleeve members Ill and I12,
When the gun" is ,
in proper position either one of the triggers at
. having external ?anges‘ at their opposite ends. or 25 is pressed, ‘whereupon the pressure supply
50 vThe two sleeved members may be secured to-. _. valve will supply ?uid to‘ bore It in the casing‘ 50
,gether by a pressed ?t or by welding‘, but‘ in‘ I0 and connect b'ore I2 to exhaust. Under these
either event this ejecting member functions \in - conditions ?uid vwill ?ow from bore IB- through
exactly the same manner during operation .of the port 4| into the left hand end of Jthe operating
cylinder and will force piston II to the right
vwith respec't'to the casing.- Piston I I in its move- 55
ample, to ‘set a rivetfsuch asjdisclos?lin the’co-' .-ment carries with it the. section ‘I0 of the piston
gun as does that‘ disclosed in Figure 16.
The machine just described is adapted, for‘ ex
pending application, Serial. No.- 21,473 mentioned
rod, sleeves II2 and III, and the gripping jaws
above. As best shown in‘ Figure 13, .the' rivet : "0., Movement, of‘the gripping jaw sleeve III
initially vcomprises a .tubular member I4I having
- an enlarged head I40 upon which is provided at
to the right with respect to the rivet pin will force'
the jaw members IIO into tight engagement with
the‘pin grooves I54 and effect a pull on the pin
Ill. The rivet pin I42 is provided, with a a to the right as viewed‘?n the drawings. _
spreader ring I 44' and a head I40 adapted, when v , ' At the same time the reaction to the pressure
the pin is pulledthrough the tubular member and‘ - in the'left hand end of the operating cylinder
> one end'an'v annular ‘conical peripheral surface
the tubular member is held against movement," to
collapse the relatively thin wall I40 of the tubular
member as shown in Figure 14 to iornr a head at
will be transmitted through the cylinder head 00,
. that end ‘of the tubular member. As the rivet pin
contact between the anvil and the rivet head, the
amount'of the diameter of'the head is to be re
is‘ pulled through the tubular memben- the
70‘ shoulder I4'I on the pin, between the enlarged por
tion adjacent the head or the pin and there-
barrel I06, anvil supporting member I05 and the
anvil‘ I-00 to the rivet head I40, ' The angle of
duc'ed‘by swaging, and the metal employed are
such that no appreciable/movement of the anvil
mainder'of the .pin which is of slightly smaller with respect to the rivet-head will occur until the
3 diameter, engages a vcorresponding shoulder “on g shoulder‘ I41 on the pin has ‘moved through head
the internal wall of the tubular member and I40, the tubular member at its left end has com- _
t5.‘ spreads the tubular member into very slow con-' pletely collapsed to forma head at the end, and 70] -
the plates are drawn tightly together, as shown in
Figure 14. However, as soon as ‘the head is
formed in the left end vof the tubular member the
resistance to the pulling force on the pinwill be
While there are disclosed several modi?cations
of certain portions of themechanism, it is ob
vious that other modifications of the mechanism
are available without departing from the spirit
' very greatly increased with the result that the
of the invention as illustrated and described-and -
?uid pressure will automatically build up in the
left hand end of the operating cylinderuntil sum
as set forth in the appended claims.
What is claimed is:
cient pulling force on the pin and reaction force ‘
,1. A' machine for setting the type of rivet - '
on the rivet head through anvil I 38 has been ’ whereinla pin is pulled- partially through a tubu
lar member having a preformed head at one ‘end
. a ?ow of the metal in the head radially'inwardly to form a second head at the opposite end, in
into' the grooves “8 of the rivet pin. Thenafter 'cluding, a closed ended cylinder, a piston in said v '
'10 created to drive the anvil over the head and cause
I completion, of the swaging action necessary, ' cylinder, a hollow tubular piston rod connected
which may or may not require engagement of the to' said piston and extending through both ends
anvil with the plate, the pin will break under in- , ‘of said cylinder, means to engage the rivet pin 15
creased tension at the break neck I“.
When the pin‘breaks, gripping jaws H0 will
tend to slide backwardly due to the inherent
.resilience “of the parts, but this movement of the
gripping jaws will be materially retarded by the
jaw follower I30 as well as by springs-‘Iii. The
broken end'of the rivet pin will then or later dur
ing repeated'riveting pass on through the hollow
piston rod and eventually will be ejectedthrough
25. member 81. The guard 83 is provided to insure
1‘ connected‘, to the piston rod and having an open
ing therein communicating with- the opening
through said rod, '9. combined thrust member and
swaging anvil fixedly secured to said cylinder,
and means for supplying ?uid-pressure to said 20
cylinder to effect the head forming operation,
swage the preformed head to the pin, and break
the pin, said pin engaging member being adapt
ed to discharge said broken pin end through said
hollow piston rod.
that the rivet pins, when ejected from member 81,
2. In combination, a single anvil riv/et gun '
will always travel in the same direction so that having a. cylinder, an operating piston in said
they can be avoided by the operator, and the
cylinder, means connected to said piston for ex
direction is so selected that the broken pin ends“, erting a pulling force on one rivet element, and
30 cannot strike the ._?uid conduits.
a combined unitary thrust member and swaging 30
As soon as the rivet pin is broken the operator. . anvil fixed to the cylinder and adapted to engage
releases the pressure on the trigger-member with and transmit the reactive force to another ele- . ‘
the result that the bore l3 will be connected 'to .ment of-the rive't, of a pair of ?exible conduits
exhaust and ?uid }under pressure will be applied ‘_connected to the cylinder and in constantly open
to bore I2. , The ?uid then travels from bore l2
communication with the opposite ends thereof
through port 42 into the right hand end of the
operating cylinder, forcing piston H, to the left,
respectively, ?uid pressure means remote from '
and the ?uid at the left hand side of piston . II is
exhausted through port ll to the bore l3. Dur-'
40 ing this phase of the operation, as previously de-.
scribed, a small amount of the ?uid in bore l 2 will
pass through the scavenging valve 54 and into the operating cylinder at the left hand side of piston.
“, carrying with it any entrapped air or foreign
During the movement of piston l I to the left,
piston rod section 10 and sleeves III and II I are
likewise carried to the left, and the reaction force
saidigun for alternately supplying an excess of
?uid jtpressure to One or the othe of said con
duitat-yitnd means on the gun for controlling said
?uid pressure means.
'- "
3. In combination, ‘a rivet 'gun including 2a
double acting cylinder and operating piston, a
?uid conducting lline.connected to and in con
stant communication with ‘the space at one end
of the piston, 'a ‘?uid conducting line connected 45
to and in. constant communication with- the
space at the opposite end of the (piston, means
remote from the gun operable in one, position
is applied to the casing through the right hand to supply high pressure ?uid to the first line ahd
end of the cylinder, ‘thus forcing the casing and permitexhaust through the second line and oper
barrel IN to the right with respect to the sleeve‘ able in another position to supply low pressure
This relative movement causes a thrust to
?uid throughthelow pressure line and permit 7
be transmitted from sleeve Ill through the
electing member to the 150D of the rivet held. 811d
55 the reaction pulling force to this thrust is applied
through the barrel I08. and is ‘effective to pull
exhaust through ‘the ?rstline, and means on the '
the anvil Ill oi! the rivet head. This is impor
gun§for controlling said last named means.
4. A machinefor setting rivets_of the type .
wherein aheaded pin is pulled partially through
va 'tubular memben having a preformed head at
tant inasmuch as it Provides 8' Dowel‘ means for . oneend to formf'a second head atdts other end,
removing the swaging anvil from the rivet head. jncludjng, meaiis to engage the pin,
60 without. in any wayioosening the rivet Joint.
adapted to engage ‘the preformed rivet head'and
As soon as the swaging anvil is pulledfree of - to swage the head to the pin by telescoping over
the rivet head the operator may apply the
gun to a second rivet and repeat the cycle of op
eration Just described.
It is apparent from the. above description and
the accompanying vdrawings that the invention
comprises a machine, for setting rivets of the type
described which is simple and effective for the
purpose described; that it effects such rivet ‘set
~70 ting by means of -av single anvil; and math; pro-_
vides a.power- ejecting means for ejecting the
‘ rivet upon completion of the-head swaging' opera
said head, means to apply a pulling force to said
pin e‘ng'aging means and a reactive force .to said
anvil'to effect the rivet setting operation and to
swage the preformed head to the pin, means to
- reverse the direction
_ of- the app led forces on said
pinengaging means and anvil, and, means actu'i
ated by said pin engaging means when the direc
tion of application of force is reversed for ejecting
the preformed head from the anvil.
5. A rivet setting machine including means
adapted to exert a pulling force on one rivet ,
tion. Moreover, the parts, are so designed that
they may be ‘easily manufactured and assembled
element, an anvil adapted tovengage and swage
another element of the rivet 'by telescoping ‘over
or disassembled for repair.
the same, and. means for applying a force in one is
direction on said ?rst means and a reactive force
on said anvil to cause they anvil to swage said
other element to said first-named element,
moved to engage said ejecting member and ad
vance the operative portion thereof into said
anvil opening to eject the rivet head from the
means to reverse the direction of said force to
restore the parts to their initial position, and
means actuated by said ?rst means during the
reverse operation to eject the other rivet ele
ment from the anvil.
6. A machine for setting rivets of the type
wherein a pin is pulled partially through a tubu
lar member having a preformed headat one end
to form a second head at the other end, includ
10. In a rivet setting machine, a casing, an an
nular anvil ?xed with respect to said casing
and adapted to swage a rivet head, an ejecting
member slidably mounted in said casing, a rivet
pin engaging member slidably mounted in said ‘
casing and adapted to move in one direction in 10
dependently of said ejecting member to drive the
‘anvil over a rivet head, said ejecting and pin
ing, means to engage the pin, an anvil adapted to
engaging members having surfaces adapted to
engage the preformed head and swage said head ' abut when said pin engaging member is moved
to the pin by telescoping over the head, means in the opposite direction whereby such movement
to apply a pulling force to said pin engaging of the pin engaging member will actuate the
means and a reactive force to said anvil to e?ect
ejecting member to e?ect ejection of the rivet
the rivet setting and swaging operations, means from said anvil.
to reverse the- direction of the applied forces on
11. In a rivet setting machine, an anvil having
said pin engaging, means and anvil, and means an opening therein for the reception of a rivet
carried by said pin engaging means and operable head, an ejecting member slidably carried by
when the direction of application of force is said anvil in said opening, means to limit the
reversed for ejecting the preformed head from relative movement between said member and an
the anvil.
vil whereby said member at one limit of its
7. In a rivet setting machine, a rivet head motion provides an abutment for limiting the
swaging anvil, a pin gripping device, means for movement of a rivet head into said anvil, and
moving said anvil and gripping device relatively movement of the memberto its opposite limit
in opposite directions to drive the anvil over the ejects the rivet head, and means to' move the
rivet head and swage the head to the pin, and member from said ?rst limit to said other limit.
means operated by said pin gripping device for
12. In a rivet setting machine an anvil having
ejecting the rivet head from the anvil when the an opening therein, a rivet ejecting member
relative movement between the anvil and grip
mounted within said opening for sliding move
ping device is reversed.
ment with respect to said anvil, and interengag
8. In a ‘rivet setting machine, a casing, a rivet ing means on said anvil and ejecting member for
head swaging anvil having an opening therein limiting the relative movement of said anvil and
and ?xed to said casing, a rivet pin gripping de
member in both directions.
vice slidably mounted in said casing rearwardly
13. In a rivet setting machine, a rivet head
swaging anvil having a rivet head engaging and
of said anvil, an ejecting member operatively as
sociated with said pin gripping device and ex
swaging surface and an opening therein, means
tending into said opening, means for moving said associated with said anvil apart from said swag
pin gripping means rearwardly with respect to ing surface for engaging the rivet head and lim
said anvil to drive the anvil over said rivet head, iting the swaging movement of the anvil with
said means being reversible to move said gripping respect to the head, and means movably mounted
device toward said anvil and said pin gripping in said machine for ejecting the swaged rivet head
device and ejecting member having surfaces from the anvil opening.
adapted to abut when the device is reversely
14. A machine for setting rivets of the type
moved whereby the ejecting member will ad
wherein a pin is pulled partially through a tubu
vance into said anvil opening and eject the rivet lar member having a, preformed head at one end
head therefrom.
to form a second head at the other end, includ
9. In a rivet setting machine, a casing, a rivet ing means to engage the pin, an anvil adapted
head swaging anvil having an opening therein to engage the preformed head and swage said
?xed to said casing, a rivet pin gripping device , head to the pin by telescoping over the head,
slidably mounted in said casing rearwardly of means to apply a pulling force to said pin en
said anvil, an ejecting member slidably carried gaging means and a reactive force to said anvil
by said casing between said anvil and gripping to effect the rivet setting and swaging operations,
device and having an operative portion extending means to reverse the direction of the applied
into said anvil opening, means for moving said forces on said pin engaging means and anvil, and
pin gripping device rearwardiy with respect to means carried by the anvil and actuated by said
said anvil to drive the anvil over the rivet head, pin engaging means and operable when the di
said means being reversible to move said gripping rection of application of force is reversed for
device towards said anvil and said pin gripping ' ejecting the preformed head from the anvii.
device and ejecting member having surfaces
adapted to abut when the device is reversely
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