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Oct» l5, 1946!.,
R. H. GILL
K RIVET
Filed Jan. 29, 1943
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63
I 2,409,352
Patented Oct. 15, 1946
2,409,352
UNITED STATES PATENT oEEicE
2,409,352
RrvE'r
` Ray H. Gill, Akron, ohio, assigner to The B. F.
Goodrich Company, New York, N. Y., a corpo
ration of New York
Application January 29, 1943, vSerial No.*»473,939
10 Claims. (Cl. 8,5-1-40)
l
l
.
This invention relates to rivets and especially to
reinforced tubular rivets suitable for detachably
securing structures to walls of thin material.
It has been difficult to fasten structures to walls
of thin sheet material such, for example,` as alum
inum alloy, in a detachable manner, especially
where blind riveting must be resorted to, i. e.,
Where only one side of the wall is available for
operations. With fastening means such as
threaded screws and Welding, the results have not
been wholly satisfactory.
shown in Fig. 1.
`
p
`
I
I.
member ID of ductile material Which may be an
aluminum alloy, and a continuously annular cy
lindrical sleeve or inner body portion or member
. _I I of less ductile hard material such», for example,
Ordinary rivets can
blilicking the rivets from the opposite side of the
eet.
_
The rivet illustrated in Figs. 1 to 4 comprises a
continuously annular cylindrical body portion or
not be applied in the absence of any means for
s
2
ing a modified construction of a part of the rivety
`
Objects of the invention are to provide an im
proved rivet; to provide a rivet of reinforced con
struction for blind riveting operations; to pro
vide a composite tubular rivet; to provide for pre
venting relative rotation and separation of the
respective parts of the rivet; and to provide for
simplicity of construction, convenience of as
sembly and effectiveness of operation.
Further objects are to provide for retaining the
rivet in an aperture in a wall of thin sheet mate
rial; to provide for detachably securing a struc
ture to the wall; and to provide a rivet in part
of ductile material for setting and in part of less
ductile hard material for resisting effectively
structural failure of the joint between the rivet
30
and the structure.
assteel. The cylindrical body portion Ißfhas fa
flanged end I2, an expansible portion I3 adjacent
the ñanged end and an end portion I4; and has a
bore I5 of substantially uniform diameter extend
ing therethrough except that it is counter-bored
at the expansible portion I3 to provide for a thin
wall for facilitating expanding this portion I3 for
holding the rivet against a `wall 23. The flanged
end I2 is preferably counter-sunk or substantial
ly frusto-conical for fitting the depressed margin
25 of an aperture 24 in a wall 23, as shown espe
cially in Fig. 4, but may be a flat or other suitable
shape for some applications.
The bore I5 terminates, preferably, at the
flanged end I2 in an outwardly flared bore IB
which may also be substantially frusto-conical.A
The sleeve or inner body portion I'I has a por
tion Il of reduced diameter for snugly fitting
within the bore I5 of the body I0 at the end por
tion I4 as shown especially in Fig.` 3, and has a
plurality of spaced-apart wedge elements or ribs
I8 extending axially thereof, as shown especially
` These and other objects and advantages of the
in Figs. 1 and 7. These wedge elements I8 are
invention will be apparent from the following de
embedded in the Wall of the end portion I4 when
scription.
the body portion IIJ‘and the sleeve Il are assem
In the accompanying drawing, which forms a
part of this specification, and in which like nu
merals are employed to designate like parts
bled as shown in Fig. 2, and effectively prevent
lines showing the parts in an assembled relation;
portion I4 for expanding the expansible portion
Fig. 2 is a sectional View showing the rivet in an
I3 in the manner shown in Fig. 4, in which it will
be seen that the expansion is substantially con
separation and rotation of the sleeve II in rela
tion to the body portion ID; vThe sleeve II also
throughout vthe same:
`
has a iiange portion I9 of suitable extent to' re
Fig. 1 is a perspective view showing a rivet con
sist axial deformation and of substantially the
structed in accordance with and embodying' the
same outside diameter as the body portionlß,
invention, parts being disassembled and partly 40 whereby the steel sleeve Il is adapted for apply
broken away and partly in section, and broken
ing axial force to the body portion l0 at the end
assembled condition prior to setting;
Fig. 3 is a sectional view taken along the line» 4.5 ñned to the expansible portion I3 while the‘other
3--3 0f Fig. 2;
portions of the body portion II] including the end
Fig. 4 is a view showing the rivetI secured in a
set condition in an aperture in a wall of thin
material, and showing a tool for applying the
portion >i4 remain unexpanded.
»
It is desirable that the portion I1 of reduced
diameter extend within the end portion I4 of the
50 body portion I‘ll and extend beyond the lower
rivet to the wall;
,
Fig. 5 is a view like Fig. 1 showing a modified
margin of the expansible portion I3 to an extent,
preferably, equivalent ~ to the depth of an en
construction of the rivet;
Fig. 6 is a fragmentary view in section of an
larged bore 2| in the end I'Ia opposite the ñange
other modified construction of the rivet, and
portion I9, as shown by dotted lines in Fig. l.
Fig. '7 is a fragmentary perspective view show 55 For the arrangement-,_ shown in Fig. rI, thevk wall
2,409,352
3
4
margin of the expansible portion I3, especially in
of the structure to the wall 23 and detachment
therefrom and provide added resistance to struc
tural failure of the joint between the tubular rivet
and the structure by virtue of their strength under
tension and shear conditions.
In the modified construction shown in Fig. 5,
a body portion 3U is substantially like the body
of the enlarged bore 2I may be flared or spread
open to contact the wall of the expansible portion
I3 for preventing axial separation of the body
portion -Iß and the sleeve II when assembled as
shown in Fig. 2. However, the portion I1 of re
duced diameter may extend only to the lower
those applicationsV in which the end I1a is not
portion Ill, and comprises a flanged end 32, an
flared into contact with the wall of the ilange I2,
when the expansible portion I3 has been ex
panded as shown in Fig. 4.
expansible portion 33, and an end portion 34.
The body portion 30 of ductile material, prefer
The steel sleeve II has a threaded bore 20 ter-l
minating, if desired, in an enlarged bore 2| at the
tially uniform diameter extending therethrough
ably aluminum alloy, has a bore 35 of substan
except that it is counterbored at the expansible
portion 'J3 and terminates, preferably, in an out
wardly llared bore 3S at the flanged end 32. The
viding for a thinner wall at this end I1a of the
expansible portion 33 has a wall of reduced thick
sleeve I I to facilitate flaring the wall of the por
'ness tofacilitatethe expanding thereof. The end
tion I1 into contact with that/all ofthe flange I2,
portion 34 terminates in a toothed portion 34a
when the expansible portion I3 has been ex
for'engaging with a sleeve 3I.
panded as shown in Fig. 4, for additionally se
The sleeve or inner body portion 3l of less duc
curing the parts against axial separation. The 20
tilehard material, preferably steel, has a threaded
threaded bore 20 permits engaging the rivet with
bore 40, and has a portion 31 adapted to ñt snugly
a threaded member .28 of a suitable tool 26 for
within the end portion 34 of the body portion 3i),
applying axial force to expand the expansible
and has a flange portion 39 having a toothed
portion I3, thus holding the rivet against the Wall
portion 38 for interlocking with the toothed por
23.
tion 34a. It is desirable that the portion 31 ex
In assembling the tubular rivet, the sleeve II
tend within the end portion 34 of the body portion
is forced into the borel I5' ofthe body portion IIJ
30 and beyond the lower margin of the expansible
at theend portion I4», and' since the steel sleeve is
portion 33 to an extent, preferably, equivalent to
of l'ess du'ctile» hard material, the spaced-apart
the- depth of a bore 4I of substantially uniform
wedge elements or ribs IB` are embedded in the
diameter in the end 31a opposite the flange por
aluminum wall of the end portion I4 for securing
tion 39 as shown by dotted lines in Fig. 5, whereby
the- parts against axial separation and rotation.
the: end 31a may be flared into contact with the
The sleeve II isl engaged with the body portion I0
wall of the expansible portion 33 for securing the
to an» extent suflicient to contact the flange por
parts against axial separation. As discussed
tion I9'> with the end of the end portion I4, the
hereinabove, the portion 31 may, however, extend
portion I1 of the sleeve II extending beyond the
only to the lower margin of the expansible por
lower margin of the expansible portion I3 as
tion 33. The flange portion 39 is substantially`
shown in Figs. 1 and 2'.
the same diameter as the outside diameter of the
WhenV applying the rivet to the wall 23 of thin
cylindrical body 3B and is of an extent sufficient
sheet metal, the assembled rivet, as shown in Fig.
to permit applying axial force to the end portion
2, is engaged preferably, with the threaded niem-I
34 of the body 30 with negligible distortion of the
ber 28 of the tool 26 and inserted in the aperture
flange portion 39.
24 until the flanged end I2 contacts the counter
In assembling the: modiñed tubular rivet, the
sunk margin 25, whereupon the expansible por
portion 31 is press-fitted into the bore 35 of the
tion I'3 may then be expanded by the application
end portion 34 until the toothed portions 34a and
of’ axial force from the tool 26 through the
38v are interlocked, thereby preventing rotation of
threaded member 28, while an anvil lportion 21 of
the sleeve 3| with respect to the cylindrical body
the tool maintains the flanged portion I2 against
portion 30.
the margin 25, thus holding the1 rivet in place
against the wall. During the application of the 50 It is desirable that the threaded bore 4U ter
minate in ay bore 4I of greater diameter and of
axial force, the steel sleeve II is drawn toward
substantially uniform diameter at the end 31a
therfl'angedï end I2 andk is drawn to an extent'suili"
of the portion 31, as shown in Fig. 5, toA provide
cient to permit‘fl‘aring the end I ‘lo of the sleeverI Ifor a wall of reduced thickness for facilitating
into contact with the wall of the outwardly flared
bore I6, thus- additionally securingÍ the parts 55 flaring the endl 31a into. contact with the Wall of
theV expansible portion 33 and of the flanged end
against axial separation. The'wedge elements or
32 when the rivet is attached to the wall 23, and
ribs I8 being of harder material than the body
thereby additionally securing the parts against
portion I0 remain embedded in the end portion
axial separation. The operation of assembling
I4 effectively preventing relative rotation of the
sleeve I I and the body portion I0’ and become em 60 and of mounting the rivet to the wall 23 is ac
complished in the manner described hereinabove
bedded in the wall of the flanged end I2 during
forl the rivet shown in Fig. 1.
the drawing andv flaring' operations, as shown
end Ila opposite the flange portion I3 thus pro
especially in Fig; 4.
In thisv manner the body portion vIIJ and the
The'invention includes a further modification
of the rivet as shown in‘ Fig. 6, in which an inte
sleeve or inner body portion I I are interlocked and 65 gral, tubular, and reinforced construction may
be employed. Such a rivet 60 of ductile material
separation is prevented> eiîectively. When the
comprises> a flanged end 62', an expansible por
tubular rivet is mounted in place in the aper
tion 63 adjacent the flanged end, and an interiorly.
ture 24, as shown in Fig. 4i, the threaded member
threaded end portion 64 havingv a wallA of' greater.
28' ofthe tool 26 may be removed and a structure
thickness than that of the expansible portion;
such, for example, as a cabinet, may be attached
The threads 64a may be reinforced for resisting
to> the wall 23 as by a suitable -bracket and
failure under tension and shear conditions by a
threaded screw engaging> with the threaded bore
suitable electroplating> 64b, such, for example, as
20> of' the sleeve II. Since the sleeve II is ofl less
chromium, or a thin sprayed coating of metal,
ductile hard material, such as steel, the threads 'of
the bore 2D will withstand repeated attachment 75 such as steel, or other means adapted to
2,409,352;
s‘trengthenthe threads, such as heat treatment.
Alternately, the end portion `64 may be of a lam
inated wall construction comprising an outer
layer oi the ductile material to which is bonded
an inner reinforcing layer of less ductile hard
material, such, for example, as sprayed steel,
or steel tubing. The threads may be cut sub
sequently in the latter layer.
' Variations may be made without departing
6
flanged end, and a continuously annular cylin
drical sleeve disposed in said end portion of said
cylindrical'body portion in telescopic relation
ship therewith and snugly fitting within said bore
of substantially uniform diameter, said'sleeve
`having a flange portion contacting said end por
tion for applying axial force to said cylindrical
body portion and having a plurality of spaced
apart‘rib elements extending axially along the
from the. scope. ofthe invention as it is defined in 10 outer surface of said sleeve in a manner for em- .
the following claims.
bedded association with the Wall of said end por
I claim:
‘
‘
1. A tubular rivet structure comprising a cylin
drical body portion having a bore of substantially
tion of said cylindrical body portion for pre
venting rotation of said sleeve in relationto said
cylindrical body portion, and said sleevehaving
uniform diameter extending therethrough and 1.5v an interiorly threaded portion for engaging a
terminating in a counterbore, said cylindrical
body portion. including a 4flanged end and an
threaded member inserted in said tubular> rivet
expansible', portion adjacent said flanged end,
6. A tubular rivet structure comprisingla' con
structure from said flanged end.
» `
a tubular body portion having a portion of re
tinuously annular cylindrical body portion hav
duced- diameter. disposed within said bore of said 20 ing a bore of substantially uniform diameter ex
cylindrical body portion at the end opposite said
tending therethrough and terminating in a coun
flanged end and having a flange portion of
terbore, said cylindrical body portion including
substantially the same outer diameter as said
a flanged end outwardly of said counterbore, an
cylindrical-body portion for applying axial‘force
expansible portion adjacent said flanged end, and
to said cylindrical body portion for expanding said 25 an Vend portion terminating in a toothed portion,
expansible portion, ‘said tubular body portion hav
and a continuously annular cylindrical sleeve
ing a threaded boreA for engaging with a threaded
having a portion disposed in said end portion of
member inserted in said rivet from said flanged
said cylindrical body portion in telescopic rela
end, and fastening means for securing together
tionship therewith and snugly fitting within said
said cylindrical ‘body portion and said tubular 30 bore of substantially uniform diameter, said
body portion.
^
sleeve including a flange portion having a toothed
i 2. A rivet structure as defined in claim l in
portion for interlocking with said toothed portion
which said fastening means comprises a plurality
of said end portion of said cylindrical body por
of spaced-apart rib elements extending axially
tion for preventing rotation of said sleeve in
alongsaid portion of reduced diameter of said 35 relation to said cylindrical body portion, and said
tubular body portion in a manner for embedded
sleeve having an interiorly threaded bore» for en
association with the wall of said cylindrical bodj7
gaging a threaded member inserted in said tubu
portion.
’
lar rivet structure from said flanged end.
3. A rivet `structure as defined in claim 1 in
'7.` A tubular rivet structure comprising a con
which said fastening means comprises a toothed 40 tinuously annular cylindrical body portion of
portion at‘the end of said cylindrical body por
ductile material and having a flanged end, an
tion opposite said flanged end engaging a toothed
expansible portion adjacent said flanged end, and
portion of said'flanged portion of said tubular
an end portion, said cylindrical body portion hav
body portion.
ing a bore of substantially uniform diameter ter
4. A tubular rivet structure comprising a body 'W minating in a counterbore, said counterbore ter
portion having a flanged end and a bore of sub
minating in an outwardly flared bore at said
stantially uniform diameter terminating in a
flanged end, and a continuously annular sleeve
counterbore adjacent said flanged end, said coun
of less~ductile hard material and having a por
terbore terminating at said flanged end in an
tion disposed in said bore of substantially uni
outwardly ñared bore, said body portion having CTI C form diameter of said cylindrical body portion
an expansible portion adjacent said flanged end
at said end portion in telescopic relationship
and an end portion, and an inner body portion
therewith and snugly fitting therein, said por
having a portion disposed within said bore of sub
tion of said sleeve having a plurality of spaced
stantially uniform diameter at said end portion
apart rib elements extending axially along the
in telescopic relationship therewith and a flanged 5 outer surface of said sleeve in a manner for em
portion contacting said end portion of said body
bedded association with the wall of said end por
portion and adapted for applying axial force to
tion of said cylindrical body portion for prevent
said body portion for expanding said expansible
ing rotation of said sleeve in relation to said
portion, said inner body portion having a thread
cylindrical body portion, said sleeve having a
ed bore for engaging a threaded member inserted
flange portion of substantially the same outer
in said rivet structure from said flanged end, said
dia-meter as said cylindrical body portion and
threaded bore terminating in a counterbore pro
contacting said end portion for applying axial
viding a thinner wall portion opposite said flanged
force for expanding said expansible portion, and
portion for expanding into contact with the wall>
said sleeve having a threaded bore for engaging
of said outwardly ilared bore at said flanged end, '" a threaded member and terminating in an en
and means for interlocking said body portion
larged bore of substantially uniform diameter at
and said inner body portion for preventing rela
the end opposite said ilanged portion providing
tive rotation.
a thinner wall portion for Haring into contact with
5. A tubular rivet structure comprising a con
the wall of said outwardly flared bore at said
tinuously annular cylindrical body portion hav
flanged end of said cylindrical body portion for
ing a bore of substantially uniform diameter ex
tending therethrough and terminating in a coun
terbore, said cylindrical body portion including
a ilanged end adjacent said counterbore, an end
additionally securing said cylindrical b_ody por
tion and said sleeve against axial separation.
3. A tubular rivet structure comprising a con
tinuously annular cylindrical body portion of
portion, and an expansible portion adjacent said 75 ductile material and having a flanged end, an
2,409,352@
7
expansible portion adjacent said flanged end, and'
an end portion terminating in a toothed portion,
said cylindrical body portion having a bore of
substantially uniform diameter Aterminating in
a counterbore, said counterbore terminating in
an outwardly fiared bore at said ñanged end, and
a continuously annular cylindrical sleeve of less
ductile hard material and having a portion dis
8
said -second body` member havingv a threaded;
bore therein for removablyA engaging a threaded
member inserted in the rivet structure from said
seating- portion to draw said end portion and
Ul said seating portion toward one another and- ex
pand bsaid intermediate portion outwardly, and
means for securing the second member against
relative movement with respect to said end por
tion 'in the direction'of said seating portion of
posed in said end portion of said cylindrical body
portion in telescopic relationship therewith and 10 the ñrst said member and for applying axial
force to the first said member at said end por
snugly fitting within said bore of substantially
tion thereof for expanding said intermediate
uniform diameter, said sleeve including a flange
portion while said second body member remains
portion having a toothed portion for interlock
secured with respect `to said end portion.
ing with said toothed portion of said end portion
10. A tubular rivet structure adapted to be
of said cylindrical body portion for preventing ro
seated and upset in- an aperture in a Wall from
tation of said sleeve in relation to said cylindrical
one side onlyof said Wall, said rivet structure
body portion, and said sleeve having an interiorly
comprising a body member insertable, in said
threaded bore for engaging a threaded member
aperture from said side with 4an end portion
inserted in said tubular rivet structure from said
flanged end, said threaded bore terminating in an 20 projecting beyond the other side of said‘wall‘v, said
body member comprising a seating portion at'tl're
enlarged bore of substantially uniform diameter
end opposite said end portion and an intermedi
atfthe end opposite said flanged portion thereby
ate portion adjacent said seating portion, and said
providing for fiaring the wall of said enlarged
body having a bore extending' therethrough from
bore into contact with the wall of said outwardly
said seating portion, the wall of said intermedi'
flared bore at said flanged end of said> cylindrical
ate portion being> of lesser thickness- than the' wall
body portion for additionally securing said cylin
of said end portion, a second body memberl dis
drical body portion and said sleeve against axial
posed wi'thin the iirst said member at' said end
separation.
portion thereof in telescopic >and snugly fitting
9. A tubular rivet structure adapted to be seated
and upset in an aperture in a wall from one side 30 relation therewith, said second body member com
prising a ñange portion at one end thereof' in
only of said Wall, said rivet structure compris
abutting contact with said end portion ofthe first
ing a body member insertable in said aperture
said body member for applying axial force there
from said side with an end portion projecting
to to expand said intermediate portion, and said
beyond the other side of said Wall, said body
second body member having a threaded bore
member comprising a seating portion at the end
therein for removably engaging a threaded mem
opposite said end portion and an intermediate
ber inserted in the rivet structure from said seat
portion adjacent said seating portion, and said
ing portion to draw said end portion and said
body member having a bore extending from said
seating portion toward one another and expand
end portion and terminating in a oounterbore
in said intermediate and said seating portions, 40 said intermediate portion outwardly, andmeans
for securing the second said member against rela
the wall of said intermediate portion being of
tive rotative movement with respect to said end
lesser thickness than the wall of said end por
portion of the first said member.
tion, a second body member disposed within the
first said member at said end portion thereof in
RAYV 'HL GILL.
telescopic and snugly fitting relation therewith, 45
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