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Патент USA US2403810

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July 9,‘ 1946-
. ' F. LE B. LORD
2,403,810
INSERT
‘Filed July 24, 1945
17, 20/5'
1/
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INVENTOR
'
BY
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ATTORNEY
/
Patented July 9, 1946
2,403,810
UNITED STATES PATENT or FICE
2,403,8/10
INSERT
Francis Le Barron Lord, Bloom?eld, N. J., as
signor to Titelox M
anufacturing Company,
Montclair, N. 3., a corp oration of New Jersey
'
'
1
Application July 24, 1945, Serial No. 606,777
3 Claims.
(Cl. 85--32,)
This invention relates to improvements in in
serts and particularly’ to inserts adapted for use
in connection with plastic, aluminum, and other
objects having threaded bores or apertures for
the reception of said inserts, to enable other ob
lects to be secured thereto.‘
An object of this invention is to provide an
insert consisting of two parts or members, one ‘
2
internal member I 0 is moved downwardly, in ex
ternal member I I, ‘to preclude accidental displace
ment of the key from the keyway. The peripheral
?ange I2 of the internal member I!) precludes
excessive movement of the internal member up
wardly in the external member.
'
‘
The stop ledges I 9 of the external member may
be formed of the material of said external mem
of which is keyed to and axially movable in the
ber ’or.may be separatelyforined and a?ixedto
other, to expand the latter into engagement with 10 the external member ‘to partly’close the'axial slit
the bore in which the insert is positioned.
I8 thereof for the purpose above ‘described.
A further object of the invention is to provide ~
In operation, the insert parts shown in Fig. '4
an insert of the character. described‘ of such
are brought together under pressure ‘by the use
structural features that. the internal member
of any suitable tools or other mechanism for that
thereof, which is initially forced into theexternal
purpose, the relative ‘dimensions of the parts be
member thereof is precluded from accidental dis
ing such that the key I5 maybe initially forced
placement while permitting of the relative axial
past the, stop ledges I9 to assemble the parts as
movement thereof Within the external member.
shown in Fig. 1. The key I5 then snaps into the
An embodiment ‘of a structure employing my
axial slit. I8; the parts are thus effectively united
invention is shown in the accompanying drawing 20 to function as a unit which cannot be ‘accidené
and described in detail in the ensuing speci?ca
tally disassembled.
tion. This embodiment is merely by way of ex
In operation, the insert is adapted to be initially
ample; my invention is not limited thereto but
positioned in the threaded bore 21 or other open
includes all other forms which would come Within
ing of the member 22 which may be of plastic,
the scope of the appended claims.
' aluminum, or other material. The external mem
In the drawing:
her is preferably provided, at the upper end there
Fig. 1 is a side elevational view of an insert em
of with transverse recesses 23 ‘adapted to be en
bodying my invention,
gaged by any suitable tool to initially thread
Fig. 2 is a top plan view thereof,
theinsert into the bore.
‘
1
Fig. 3 is a vertical, partly sectional, partly 30' The internal member is ‘adapted to receive the
fragmentary, view taken on line 3—3 of Fig. 2 in
stem or shank of the member to'be held therein.
the direction of the arrows, but showing the in
As shown in Fig. 3, the member to be held therein
' sert positioned in a threaded bore and engaged
may consist of a bolt 25 having the threaded
by a bolt member holding a second object to that
shank 24, by means of which an object 21 (hav
containing the bore, and
Fig. 4 is a perspective view of the members com
prising the insert, shown disassembled.
35 ing an‘aperture 25 through which the threaded
shank of the bolt passes) may be secured to the
object 22 in which the insert is positioned. In
In the embodiment of my invention shown in
the assembly of the parts to the position shown
the drawing, the insert comprises an internal
in Fig. 3, the threading of the bolt 25 in the in
member It which, on assembly of the parts as 40 ternal threaded aperture I6 of the insert axially
shown in Fig. 1_, is keyed in external member H
moves the internal member In in the external
for axial reciprocation therein. The internal
member II, thereby contracting the internal
member I0 is externally tapered, has an internal
member upon the shank 24 of the bolt and simul
threaded aperture I6, is provided with key I5
taneously expanding the external member in the
projecting externally there from and with 45 bore
2!. The insert is thus effectively locked in
peripheral flange I2 de?ning the lower end there
the object 22 and the second object 21 is locked
of, and with an axial slit I4. The external mem
thereto.
ber II is externally threaded as at 20 and is pro
The key I5 has positive ?at holding faces en
vided with an internal tapered aperture I‘! for the
reception of the internal member Ill, and with 50 gaging the walls of slit I8 and is located at a pre
determined circumferential point relative to the
an axial slit or keyway I 8 for the reception of
slit M. The arrangement shown in Fig. 4 is one
key I5 of the internal member; The external
of an in?nite number of possible locations of
member I I is further provided with ledges I 9 pro
the slit I 4 circumferentially relative to the key I 5.
stop against which the key I5 will abut when 55 Said relative location enables a-predetermined
wrapping effect to be obtained in use of the in
truding into the axial slit I8 and serving as a ‘
I
2,403,810
3
sert to resist the tendency of the. parts to be
come disengaged after their threaded engage
ment with the bolt 25 or other object.
The term “predetermined wrapping effect” as
used in the speci?cation and claims hereof shall
be deemed to mean the location of the slit 14
relative to the keying means so that on engage
ber to preclude accidental displacement of the
key therefrom.
2. An insert comprising an externally threaded
member for threaded engagement with a threaded
aperture, said member being provided with an
axial slit and having an internal tapered aper
ture, and an internal member externally comple
mentarily tapered adapted to be inserted into
said ?rst named member, said internal member
ing the bolt 25 into the insert, a wrapping effect 10 being internally threaded for engagement by a
is attained where the slit is located other than
threaded member and being provided with an
180° from the keying means, and, where the
axial slit and with an external key adapted to
slit is located at 180° from the keying means,v
be received in the slit of said ?rst mentioned
the wrapping effect is nil--in short, the term
member to key the internal member therein for
shall be deemed to mean predetermining whether
axial reciprocation therein, and being further
and if so the degree of the wrapping effect to be
provided with a peripheral ?ange at the lower
attained by the relative location of the parts
end thereof, said key being so disposed relative
referred to.
to the slit of the internal member as to pro
While I have shown key l5 for reception in
vide a predetermined. wrapping effect when the
the keyway or slit 18 it will be understood that
parts are assembled and engage a threaded mem
20
other keying means may be used for the same
ber, and stop ledges on said ?rst named mem
purpose within the scope of this invention. The
ber projecting into and partly closing the slit
key l5 is preferably of less axial length than
thereof to preclude accidental displacement of
the internal member ID for the purpose set forth
the key therefrom,
above.~
3. An insert comprising an externally threaded
The parts may be made of any desirable or
member for threaded engagement with a threaded
suitable material and the dimensions thereof may
aperture, said member being provided with an
ment or disengagement of the members by thread
be varied to suit the requirements of the use to
which the same are to be put, the representation
in the drawing being solely for the sake of illus
trating one embodiment of the invention.
Having thus described my invention what I
claim as new and desire to secure by Letters
Patent, is:
1. An insert comprising an externally threaded
member for threaded engagement with a threaded
aperture, said member being provided with an
axial slit and having an‘internal tapered aper~
axial slit and having an internal tapered aper
ture, and an internal member externally com
:plementarily tapered adapted to be inserted into
said ?rst named member, said internal member
being internally threaded for engagement by a
threaded member and being provided with an
axial slit and with an external key adapted to
‘be received in the slit of said ?rst mentioned
member to key the internal member therein for
axial reciprocation therein, said key having posi
tive holding faces and said slit of the internal
member being adapted to be engaged by said
plementarily tapered and adapted to be inserted 40 holding faces, said internal member being further
into said first named member, said internal mem
provided with a peripheral ?ange at the lower
ber being internally threaded for engagement by
end thereof, said key being so disposed relative
a threaded member and being provided with an
to the slit of the internal member as to provide
axial slit and with an external key adapted to
a predetermined wrapping effect when the parts
be received in the slit of said ?rst mentioned ' are assembled and engage a threaded member,
member to key the internal member therein for
and a member on said external member project
axial reciprocation therein, said key being so dis
ing into and partly closing the slit thereof to
posed relative to the slit of the internal member
preclude accidental displacement of the key there
as to provide a predetermined wrapping effect
from.
/
when the parts are assembled and engage a
FRANCIS LE BARRON LORD.
threaded member, and stop ledges projecting into
and partly closing the slit of the external mem
ture, and an internal member externally com
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