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Патент USA US2407428

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‘Sept. 1o,v194e.'
J, A, JONES
'
2,407,427
SELF-LOCKING WEDGE
Filed Oct. 11, 1943
. James 4 (/0096,
2,407,427
Patented Sept. 10, 1946
UNITED STATES PATENT OFFICE
2,407,427
SELF-LOCKING WEDGE
James A. J ones, Fayetteville, Ark.
Application October 11, 1943, Serial No. 505,834
6 Claims. (01. 306—33)~
2
1
of Figs. 1 and 5, respectively, showing a modi?ed
form of attachment of the locking member to the
wedge;
The invention is designed primarily for use as
a means of insuring the secure attachment of a
tool, for example a hatchet, hammer or axe, upon
Figure 8 is a vertical side elevational view
its handle, but is capable of use with beneficial re
sults in many other relations where a tight and 5 (partly broken away) of a tool with my locking
device applied thereto, the locking device being
secure joint between a handle, rod, shank or like
indicated in dotted lines; and
member of wood or other suitable material and
Figure 9 is a fragmentary central vertical sec
its head, socket or cooperating coupling may be
tional view through the locking device in Fig. 8,
necessary or desirable.
taken on a plane at right angles to the plane of
Fig. 8 and showing the locking device in its look
One of the principal objects of the invention is
the provision of an improved locking device for
ing position.
use in the connection of a handle, rod, shank or
like member and its head or socket which may be
Essentially my invention comprises a locking
device, preferably in the form of a wedge I of
easily and inexpensively manufactured but which
will be effective and durable in producing and 15 usual tapered con?guration end to end, with sub
stantially flat side faces 2, 3, associated with a
maintaining a tight and secure connection.
locking member comprising arms 4, 5 (Figs. 1
Another important object of the invention is
and 2), M, I5 (Figs. 3 and 4) or 24, 25' (Fig. 5)
the provision of a locking device which may be
secured to- wedge I and normally projecting out
sold as a unit, completely assembled with its look
ing means and ready for use, the insertion of the 20 wardly therefrom on its opposite sides. The
wedge I may be made of malleable iron or other
device into position placing the locking means in
suitable material. while the locking arms ll, 5 ‘or
to active locking relation and thus rendering it
arms I4, 55, or 24, 25, may be of wire possessing
unnecessary to insert an additional locking ele
su?icient strength and resiliency. to have a tend
ment after the insertion of the locking device.
Another object of the invention is the provision 25 ency to stand outwardly from the wedge and bite
into the wood or other material in which they
of a self-locking wedge which may be handled
are designed to exert a locking action. Arms
and applied in the same manner and with the
4, 5 (or arms lél, I5, or 24, 25') may be formed
same facility as the ordinary wedge heretofore
integrally as a unitary locking member, or as
used in endeavoring to tighten and render secure
separate arms welded or otherwise securely an
various joints, such, for example, as the connec
chored to wedge I; the integral form of construc
tions between axes, hatchets, hammers and the
tion is pref-erred. because it is easier to manufac
like and their handles, and which, when applied,
tureand assemble and is less liable to become de
will produce a tighter and more secure and lasting
tached after having been placed in position on
joint or connection.
A further object is the provision of a wedge for
Wedge I.
Each form of my invention illustrated in the
tool handles or the like which is self-locking and
drawing includes such integral form of locking
will not work loose or become ineffective through
member, respectively designated A in Figs. 1 and
repeated and long-continued use of the tool or
2, B in Figs. 3 and Li and C in Fig. 5. Each locking
other article which it is designed to hold secure.
Other objects and advantages of the improved .. member comprises a pair of arms 4, 5 (or I4, I5,
device which constitutes my invention will be
or 24, 25) connected by an intermediate neck ‘6
apparent from the accompanying speci?cation
engaging wedge I in such manner that the arms,
and drawing, wherein:
at their free end portions, project outwardly from
Figure 1 is a side elevational View of the pre
Wedge l and beyond the side faces thereof, As a
ferred form of my improved locking device;
convenient and effective manner of securing the
Figure 2 is an edge elevational view of the de
arms 4,
(or Iii, I5, or 2d, 25) to wedge I, the
vice illustrated in Fig. 1;
locking member A (or locking member B or C)
Figures 3 and 4 are views similar to those of
may be passed through an aperture ‘I provided in
1 and. 2, respectively, of a modi?ed form of
wedge I for this purpose and may be ?rmly an
50
my locking device;
chored in the walls of aperture 1 by bending
Figure 5 is a central vertical sectional view,
locking member A (or locking member B or C) to
generally similar to the edge elevational views of
form an anchoring loop 8 seated in. grooves 9 in
Figs. 2 and» 4, of another modi?ed form of em
the side walls of wedge I, with its neck 6 in aper
bodiment of my invention;
Figures 6 and '7 are views similar to the views 55 ture ‘I. Although not essential, welding of loop 8
)
.
-
.
2,407,427
3
or neck 6, or both, in position may be employed
for further security, if desired.
It is to be understood that the wire of which
locking members A, B and C are formed may be
As an alternative manner of anchoring locking _
?at or of any other suitable cross-sectional shape
member A (or looking member B or C) to wedge
or con?guration, my invention not being limited
I, neck 6 may be engaged in a notch ID in the
to the use of round wire. It should also be un
‘pointed or thinner end II of wedge I and loop 8
derstood that the wedge I may be made in dif
seated in recesses or grooves 9 in its side walls, as
ferent sizes and that the locking member A, B or
shown in Figs. 6 and 7.
C is capable of variation in size relative to the
The arms 4 and 5, I4 and I5, and 24 and 25, of
size of wedge i. It should also be noted that the
locking members A, B and C, respectively, when 10 notch I0, shown in Fig. 6, is enlarged for the
attached to wedge I in either of the ways de
sake of clarity and need only be of su?icient width
scribed above, are bent, from the free ends of
to permit the entry of neck 6.
loop 8, inwardly into slot I2 and projected
I claim:
through slot I2 into locking position. The parts
1. A device of the character described com
of each loop 8 which extend along the side faces
prising a wedge having a slot therein and a plu
of wedge I seat in the grooves 9 to prevent their
rality of locking arms each secured at one end to
projection beyond the surface of either of such
said wedge in its relatively thin portion and pro
side faces.
jecting through said slot and beyond the opposite
In looking member C, the simplest form of my
faces of said wedge in the direction of the thicker
device (shown in Fig. 5), the arms 24, 25, bend ' end of said wedge.
1
only to form loop 8 and project directly from
2. A device of the character described com
loop 8 through slot I2 and outwardly from slot I2
prising a wedge having a slot therein and lock
to active locking position, arms 24, 25, crossing
ing arms each secured at one end to said wedge
each other within slot l2 and, with their loop as
in its relatively thin portion, said arms extending
a base, forming a pair of resiliently-mounted "‘ in crossed relationship through said slot with
spring arms,
their free ends projecting beyond the opposite
In looking member B, the form of embodiment
faces of said wedge in the direction of the thick
shown in Figs. 3 and 4,. arms I4, I5, bend
er end of said wedge and substantially in align
through slot I2 and, by a reverse bend I4’, I5’,
ment with said slot.
form a spring seat of greater strength and resil- "
3. A device of the character described compris—
iency for the active portion of each of the arms
ing a wedge having a slot and an opening there
[4, I5, which project outwardly from slot It in
substantially straight locking portions which
in, said opening being adjacent the thinner edge
of said wedge, and an integral locking member
stand substantially at right angles to the planes
comprising a pair of locking arms connected by a
of the Wider faces of Wedge I on Opposite Sides 3-"- neck portion and a loop portion, said neck por
thereof and substantially in alignment with slot
tion being seated in said opening and said loop
I2.
portion embracing a portion of said wedge be
In looking member A, the preferred form of
tween said cpening and said slot, said arms ex
my invention (shown in Figs. 1 and 2), the con
tending through said slot with their free ends
v,
struction is generally similar to locking mem
‘ projecting beyond the opposite faces of said
wedge.
bers B and C, its neck 6 being anchored in aper
ture ‘I, its loop 8 being seated in grooves 9 and
4. A device of the character described compris
its arms 4 and 5 being bent inwardly in crossed
ing a Wedge having ?at inclined faces and tapered
relation through slot I2 and reversely bent, at 4' ,I
side edges, a slot through said faces substantially
and 5’, respectively, and extending, from bends ‘
on its medial longitudinal line and a notch in the
4', 5' through and outwardly of slot I2 toward
the thicker end of wedge I. In looking member
A, however, the free ends of the arms 4, 5, in~
thinner tapered edge substantially in longitudinal
stead of projecting from the reverse bends 4’, 5',
substantially straight through slot I2 and be
yond the respective outer faces of wedge I sub
stantially at right angles to the wedge faces, as
alignment with said slot, and an integral look
ing member comprising a pair of locking arms
connected by a neck portion and a loop portion,
said neck portion being seated in said notch and
said loop portion embracing said wedge between
said notch and said slot, said arms extending
through said slot. with their free ends projecting
beyond, the opposite ?at inclined faces of said
effective ends of the locking arms 4, 5, are posi- i‘ wedge.
tioned on opposite sides of the axial line of slot
5. A device of the character described compris
ing a metal wedge having a slot therein and an
I2, the remaining portions of arms 4, 5, stand
ing substantially in alignment with slot I2.
integral resilient Wire locking member compris
This configuration of arms 4, 5, gives the spring
ing a pair of locking arms secured ts said wedge
locking member A spiral stress and the arms 4, 30 at its relatively thinner portion with their free
ends extending through and projecting beyond
5, greater penetrating action when wedge I is
driven into position, for example into handle 33
said slot in the direction, of the thicker end of
said wedge, the terminal portions of said free
of tool 3i, making the ends I3 of arms 4, 5, bite
in looking members B and C, are formed with a
twist or spiral curve in each arm, so that the
more deeply into the Wood of handle 3!).
The
twisting effect of the spiral and the bending 65
ends being sharpened.
6. A device of the character described com
prising a wedge having a slot therethrough and
strain at the reverse bends 4', 5’, continue to
a notch in its thinner tapered edge, and locking
exert themselves when the wedge I is seated, thus
arms each secured at one end to said wedge in
increasing the locking action of wedge I and the
said notch, said arms extending through said slot
di?iculty of its withdrawal.
In order to increase their biting action the 70 with their free ends projecting beyond the oppo~
site faces of said wedge toward its head portion.
active ends I3 of arms 4, 5 (or of arms I4, I5, or
24, 25) of locking members A, B or C, respective
ly, may be pointed or sharpened.
JAMES A. JONES.
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