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Патент USA US2411007

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Nov. 12, 1946.
Filed March 9, 1943
.7 27211701"
Patented Nov. 12, 1946
Douglas Thomas Shaw, Montreal, Quebec, Canada
Application March 9, 1943, Serial No. 478,537
In Canada February 27., 1943
2 Claims.
(Cl. 174—172)
This invention relates to fasteners for in
formed of relatively stiff but spring material,
sulators of the type in which it is desired to
such as copper-plated steel wire. The opposite
retain a wire in the slotted end thereof, and the
ends l4. and i5 of this retaining member are
objects of the invention are generally to im
bent in opposite directions so that when the re
prove and simplify the construction of such a
taining member is in the groove and is turned
device and to enable it to be rapidly applied with
one direction the outer member I4 will ride
out the necessity of the ordinary tie wire.
over the wire 12 and securely lock it in position.
In the ordinary type of insulator used for sup
In the same way if the direction of motion of
porting transmission or communication wires
from suitable supports it is common to employ 10 the retaining member is reversed, the wire I2
will be released.
insulators having slotted ends with peripheral
grooves on the exterior meeting the base of the
slots, in which grooves tie wires are retained.
The fastening of these tie wires in position oc
cupies a considerable amount of labour, and the 15
material used is more than is necessary to ac
The method of inserting and retaining the wire
l2 in the slot in the insulator may now be ex
plained. The wire is ?rst placed in the trans
verse slot 10 of the insulating member in the
position shown in Figure 4. Upon turning the
retaining ring B in a clockwise direction the in
complish the purpose desired.
sulating wire at one end of the slot NJ will be
According to the present invention a simple
engaged under the retaining member. Upon
form of fastener is provided in the form of an
open ring designed to ?t in the peripheral groove 20 continuing the clockwise motion of the retain
ping member the end ill will engage the wire l2
and having the ends bent in opposite directions
at the opposite side of the slot Ill and ride above
so that when turned it will ride over the wire
it. The retaining member may be then turned
which is to be retained in the slot, all as here
until the complete revolution is completed,
inafter more fully set forth and described in
whereupon the lower member 15 will abut the
the accompanying speci?cation and drawing.
25 wire l2 and retain it in position as shown in
In the drawing
Figure 3. To remove the ring B it is turned
Figure 1 is a perspective view showing the
in the opposite direction to the position shown
retaining ring in position.
in Fig. 5 when the wire 82 will be released.
Figure 2 is a perspective view of the retaining
I claim:
1. The combination with an insulating mem
Figure 3 is a perspective view similar to Fig
ber having a peripheral end groove and a trans
ure 1 taken from the opposite side.
verse slot in which a wire is adapted to be in
Figure 4 is a perspective view showing the
serted, of a fastening member comprising an
ring in position before it is turned to engage the
open-ended retaining ring adapted to ?t in the
wire to be retained.
Figure 5 is a similar perspective view to Fig 35 groove and to be retained therein by the spring
of the metal, at least one end of the spring being
ure 4 showing another position of the ring.
bent away from the plane of the ring at an angle
Figure 6 is a vertical sectional elevation taken
and adapted to ride overva wire inserted in the
through the slot in the insulator.
Figure '7 is a plan view.
2. Fastener means comprising an open ring of
In the drawing like characters of reference
spring metal having one end extended there
indicate corresponding parts in all the ?gures.
from at a tangent and bent in one direction out
Referring to the drawing, A indicates an in
of the plane of the ring, the other end being ex
sulator of any suitable material, such as por
celain, and, as shown, frusto-conical in shape. 45 tended therefrom at a tangent and bent out of
said plane in the opposite direction, and a sup
The outer end of the insulator is provided with
port member for the ring said member having an
a transverse slot l0 having a convex bottom ll
outer groove to receive the ring rotatably there
along which is designed to lie the wire 12, which
in and a transverse slot to receive a wire there
is to be supported and retained in position by
the insulator. 13 indicates an annular periph 50 in, one bent end of the ring being adapted when
the latter is rotated in its groove, to ride over
eral groove formed around the exterior of the
the wire in the slot and the other bent end of the
insulator crossing the lower end of the slot H].
ring forming a stop to engage the wire.
B indicates an open retaining ring conveniently
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