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Патент USA US2403496

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July Q» $1945»
' Filed Nov. 17, 1943
09/4/5255 5. 5/762‘25; 0V6.
Patented July 9, 1946
Charlesr?e Breedlova, Detroit,2 Mich;
Application November 17, 1943-; Serial ‘No; 514L626’
2_-Claims., (Cl-.j 8.5--—3:2)1
will‘v become» apparent during the1 course: oil the
following.’ description of: the accompanying
drawing, wherein:
The present‘: invention.‘ relates: to: improvements
ini sel'felocking threaded fasteners; and morev
particularly, to threaded’fast'enersof the: anchor
nut type.
The primaryobject: of‘ this, invention. is to
Figure/1' is a cross-sectional view of‘ a; pre
ferred embodiment.‘ of. the invention, illustrating.
a selfi-lockingvthrea-dedi fastener having‘a single.
wing; extension tor retaining the‘ nut in; placev
provide a threaded fastener of the. above
ment-ionedi- type- which- is i'economi'cal, toimanufv'ac
and: forming a lock, washer for the threaded
ture, easy ‘to assemble and‘ which‘ will securely
fast'err various members ‘together.
FigureZJis' a1 top p'lanview‘of the self-‘locking.
Another object-of the invention is to‘ provide a M)
threaded fastener showing the wing extension
threaded fastener of the anchor nut type, in
‘prior to: the bending thereof into position as
which theevar'i’ou-s-partswill'beheld in assembled
shown‘: in Figure 1;
relation and compact form‘ and which will lend
Figure 3; is across-sectional‘: view- of a modi?ed
itself: readily to universal use in- various
15 form of the invention illustrating?alself-loclring
threaded fastener having a pair‘ of‘ oppositely
disposed‘ wing extensions to form combined: look
Another'ob'ject of the" invention is‘ to‘ provide a
threadediastenerof the self-locking anchor nut
typelinoluding a‘ polygona'hshaped shell‘ member i washers and’ nut retaining: members;
Figure 4‘--iszavv top plan view:v of the‘ modi?cation
having anchoring wing extensions arranged on
opposite sides‘ of the shell member to facilitate‘ ‘7 shown in: Figure illustrating. the combined nut
retaining memherS-andt lock washers. in their
the attachment of the anchor‘ nut toa support
extended position: and
and‘ to’ provide other-‘wing extensions on the‘ shell
Figure 51 is'a toprp’lan view of a further modi
member which are bent inwardly’ to form nut
?edi'iorm of the invention, illustrating a: plur;
retaining members as well as lock washers.
ality'oi wing extensions formed‘ oni-the shell with
Another object of the invention is to provi‘de'a
alternate opposite wings being adapted to be
threaded fastener‘ of ‘ the self-‘locking; anchoring
nut type in which a friction washer isretain'ed' in,
position adjacent‘ the top of the threaded‘iastener
by a- conventional nut snugly ?tted‘ within the
shell member and said nut is held against
removal‘ ‘by means of" a' wing ' extension bent
therebeneath so as to form another washer for
engaging thesurfia'ce ofv a' support or‘ piece- of
Another‘ object ofth'e‘ invention is to» provide a -
bent-inwardly to‘ form combined‘ lock'washers and
nut; retaining members with the intermediate
wing extensions: forming; anchor strips for
attachment toe a suitablesupport.
In. the drawing, wherein: for the purpose‘ of
illustrating the invention attention is ?rst
directe'di to Figures 1;. and 21,. there’ is shown a‘
preferred embodiment of“ the self-locking: nut
having: a single combined? lockwasher and nut
Generally; the‘ threaded‘ fastener‘ comprises a
shell member 51, a washer 6 an'd'a, nut 1 arranged
threaded’ fastener of the above-mentioned type
in‘ which the‘ frictionv‘washer' is adapted to; ‘be
slightly expanded‘ when the threaded fastener is
in’ a‘. unique and novel manner‘ to provide a
tightened’ in place on abolt so-that said expansion
will; cause the bolt to be ‘tightly gripped‘ and‘ held 40 threaded fasten'er'which willifrictionally‘ grip the
threads. of the beltupon which it is placedv and
against accidental‘ displacement.
to provide a second lock washer to increase- the
Another object" of'the invention is-to‘ Provide
frictional“ resistance" against‘ removal of the
a threaded‘ fastener of; the seHqocki-ng anchor
nut type in? which. the shelI member is formed
The shell member dis-of polygonali shape: and
with angularlly- disposed wall? portions" adapted
is» stamped to: provide relatively straightnwall .
to form: a" cavity of" polygonal shape which will
particles 857 angularly connected to provide‘ a
mate with ‘the flats of ‘ the‘ nut- and 'to provide
polygonal-shaped recess it The'end's; of'the shell
the angul'a-rly'd'isposed wall" portions with wing
extensions so bent andv shaped‘ as to provide a
washer 'beneath‘thelnutwhich performs a two'
fold' purpose- such: as- a' lock‘ washer and a re
taining'member for the nut to hold the nut‘? from
being dislodged before a'bo'lt is applied? to the
threaded fastener.
Otherv objects-land advantages of the invention -
Eizare open and the upper endiisr?a'nged as at I'D
50 to’ provide an "inwardly" extending bead-ed’ portion
terminating ina downwardly rolled‘ free edge H.
The‘ inwardly extending, - ?ange t?' is. adaptedv to
form- a1 seat for. aaithreadi-gripping Washer‘ 152
?tted'withinnme shell? 5 inv the-cavity 9 thereof.
The :nut '1' i'sxoff a general shape and contour‘ to
be received in the polygonal recess 1 of the shell
member 5 so that the ?ats of said nut will fric
tionally engage the straight wall portions 8 of
the shell 5 and be thus held in position therein.
‘except that another diametrically opposed pair
It is intended to form the shell 5 of such dimen
ends to accommodate rivets for anchoring the
threaded fastener to a support or piece of work.
slons as to provide a snug ?t between the
of straight wall portions 8 of the shell 5 is pro
vided with wing extensions 25 and 26 having
openings 21 and 28 respectively in their free
straight wall portions 8 of the shell and the nut.
The lock washer wing extensions l9 and 20 as in
Figures 2 and 4 are folded from the position
weight metal suchas ‘aluminum or alloys ‘thereof.
shown‘in Figure~?5 to underlie the nut contained
Formed integral with one of the ‘straight wall 10 in the shell 5. In the structure shown in Figure
portions 8 of the shell 5 is a wing extension or
,5, the ‘assembled threaded fastener provides an
tab I3 having a diameter equal to the smaller
anchor nut of the self-locking type which can be
diameter of the shell 5. A bolt-receiving open~
constructed from relatively thin gauge metal and
ing 14 is formed in the wing extension I3 and “ which may be anchored in place in positions not
the outer edge of said wing extension is rounded . readily accessible with fasteners of ordinary con
to conform to the shape and general contour of
the threaded fastener. As shown in Figure 2,
In all of the embodiments of the invention, the
the wing extension or tab I3 is adapted to be
lock, washer wing extensions retain the nut 1 in
folded along the line l5 so‘ as to be bent beneath
place and urge the same into engagement with
the nut 1 as shown clearly in Figure 1, after
the washer B which may be formed of a rela
the nut has been ?tted intocthe shell 5 so that
tively soft material or metalso as to force the
its top edge engages and ?rmly presses against
washer into tight engagement with the free edge
the washer 6.
ll of the inturned ?ange [0.
The nut ‘I is provided with a threaded open
It is to be understood that the forms of the
ing I6 slightly smaller in diameter than the open 25 inventions herewith shown and described are to
ing I4 in the washer extension or tab I3 and
be taken as preferredembodiments of the same
said threaded opening 16 is formed slightly greate
and that. various changes in the size, shape and
er in diameter than the opening I‘! in the washer
arrangement of parts may be resorted to with
6. The washer tab l3 will aid in preventing
out departing from the spirit of the invention
rotation of the threaded fastener relative to a
or the scope of the subjoined claims.
support or piecev of work while the washer 6
What I claim is:
will have threads impressed therein by a bolt
l. A threaded fastener comprising a shell mem
passing through the opening or bore I‘! so that
ber having a polygonal cavity, an inwardly ex
said impressed threads will frictionally grip the
tending continuous annular ?ange at one end of
threads of the bolt and further assist in pre 35 said shell member, a shelf-locking thread-grip
venting rotation of said nut on the bolt.
ping washer mounted in said shell seated against
. In addition to forming a lock washer, the wash
said ange, a nut snugly ?tted in said cavity,
er tab [3 overlies the open end of the shell 5
combined lockwasher and. nut-retaining wing ex
and is presented against the lower wall of the
tensions formed integral with said shell member
nut 5 so as to prevent accidental separation 40 and projecting from diametrically opposite walls
of the shell and nut when the threaded fastener
thereof adapted to underlie said nut with their
is uncoupled from a bolt or the like.
bolt-receiving openings in registry and arranged
Attention now is directed to Figures 3 and 4
in overlapping relation whereby to receive a bolt
wherein the structure shown is similar to that
and prevent separation of said shell and nut when
described in connection with Figures 1 and 2
the fastener is assembled on a bolt member, and
except that there are two lock washer wing ex
other wing extensions formed on said shell mem
tensions I9 and 20 shown as being formed inte
ber projecting from opposite sides thereof to pro
gral with diametrically opposed straight wall
vide anchor lug- members, said shell member be
portions 8 of the polygonal shell 5. As in Figures
ing of a size equal to the over all size of the nut
1 and 2, the wing extensions l9 and 20 are pro 50 and washer to con?ne and house said nut and
vided with bolt-receiving openings 2| and 22
washer and to retain the bores of the nut and
of substantially the same proportion as the bolt
washer in axial alignment.
receiving opening 14 and said wing extensions l9
2. A threaded fastener comprising a shell mem
and 20 are adapted to be bent and folded beneath
ber having a polygonal cavity, an inwardly ex
the nut l on the fold lines 23 and 24 respectively
tending continuous annular flange at one end of
so as to underlie the nut and prevent separation
said shell member, a self-locking thread-grip
of the parts of the threaded fastener. As shown
ping washer mounted in said shell seated against
in Figure 3, the wing extension washers l9 and
said flange, a nut snugly ?tted in said cavity,
20 are bentand' folded so that their openings 2|
combined lock washer and nut-retaining wing
and 22- are in registry and alignment so as to 60 extensions formed integral with said shell mem
permit the passage of a bolt or the like there
ber and projectingfrom diametrically opposite
walls thereof adapted to underlie said nut with
The wing extension washers are in engagement
their bolt-receiving openings in registry and ar
Also, the nut may be formed of a relatively light
with the under surface of the nut 1 so as to be
' ranged in overlapping relation whereby to re
positioned between the work and said nut. When 65 ceive a bolt and prevent‘ separation of said shell
the threaded fastener is uncoupled from a bolt,
and nut when the fastener is assembled on a
the washer extension wings engage the bottom
bolt member, and another wing extension formed
surface of the nut and retain the same within
on said shell member and projecting laterally
the polygonal cavity 9 and prevent separation
from one side thereof whereby to provide an
of the nut and self-locking washer 6 from their TO anchor lug member, said shell member being of a
respective positions in the polygonal shell 5.
size equal to the overall size of the nut and washer
In the further modi?ed form of the inven
to con?ne and house said nut and washer and to
tion shown in Figure 5, the shell 5, washer 6
retain the bores of the nut and washer in axial
and nut ‘I are identical in formation and ar
rangement to the shell shown in Figures 3 and 4
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