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Патент USA US2407233

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Sept' 105 1946~
v.1. J. GREER ET AL.
Y
2,407,233
INSULATED WIRE STR‘IPPING DEVICE
Fiçled Feb. 21, 1944 '
d
Á Jaén
‘l
VENTORS
. @weer
Patented Sept. 10, 1946
2,407,233
‘ . UNITED STATES PATENT OFFICE
INSULATVED WIRE STRIPPING DEVICE
.lohn J. Greer, Conimicut, and Albert Luongo, '
Wickford, R. I.
Application February 21, 1944, Serial No; 523,378
2
This invention relates to a device for stripping
the insulation from wire by hand manipulation.
In the use of an insulated wire stripping device,
it is a difficult matter to by hand so arrange the
insulated wire and the hand too-1 which is to
operate thereon that the cut of the insulation is
relative position of the work and tool showing the
work as having a second cut applied thereto;
Fig. l0 is an enlarged sectional modified view
of the stop and work and showing the cutters as
formed separate from the jaw;
Fig. 11 is a fragmental perspective view show
ing the wire as extending through a stop such as
One of the objects of this invention is to pro
shown in Fig. 9; and
vide a guide for assisting in positioning the wire
Fig. l2 is. a sectional View of the work.
in the wire stripping device so that the cut will 10
In proceeding with this invention we have
mounted upon a plier-like pair of cutting mem
be made at a predetermined. point and in the
plane desired withl reference to the end of the
bers a frame which serves as a'guide for the work
work without requiring the services of a skilled
which is inserted into the members and have also
performed in the desired manner.
'
operator.
located a stop to also assist in positioning the Work
Another object of this invention is to so guide 15 in the members that an accurate out may be per
the insulating wire into the stripping device that
the out will be performed at right angles to the
formed on the work.
Y
With reference to the drawing l5 designates one
member and I6 designates another member, which
length of the wire core.
members are pivoted together as at Il by means
Another object of the invention is to provide
a stop for the insertion of the wire‘into the strip 20 of a hollow pin I8 and rivet I9 headed over as
at 2d at either end over the Washers 2l. These
ping device so that the correct length of insula
members I5 and IE provide handle portions 22
tion desired will be stripped from the wire.
and 23 which are moved apart by means of
Another object of the invention is to provide a
spring 24 guided on suitable guide pins 25 mounted
simple guide frame which may be positioned on
in each of the handle portions. The opposite end
the pivot of the plier-like members and be re
of the member IS is provided with a cutting jaw
siliently heid in position symmetrically with refer
26 having a sharpened edge 21 and a notch 28
ence to the members.
i »
While the opposite end of the member i5 is pro
Another object of the invention is to resiliently
vided with a cutting jaw 2s provided with a sharp
hold the guiding member in a symmetrical posi
tion and utilize the resilience to assist in moving 30 ened edge 3B and a notch 3i. These sharpened
edges 2l’ and 3s are adapted to come together
the jaws toward closed position to partly balance
and out Whatever may be between them While the
the opening spring for the jaws on the opposite
notches 23 and 3l register and are of a size to
side of the pivot.
straddle the wire core of the work so as not to
With these and other objects in View, the inven
tion consists of certain novel features of con 35 cut it while cutting the insulation.
Jaw 29 carries a generally U-shape stop 32
struction, as will be more fully described and par
with an opening 33 between the two leg portions
ticularly pointed out in the appended claims.
34, this opening 33 being of a size to permit the
In the accompanying drawing:
wire core to pass through while the leg portion
Fig. 1 is a plan view partly in section of the
stripping tool equipped with the invention;
40 34 will forni an abutment stop for the insulation
which surrounds the wire core. Projections 35 and
Fig. 2 is a perspective View of the wire posi
.'56 on the jaws have sharpened edges which may
tioning means which is mounted upon the pivot
come together for the purpose of cutting the wire
for the jaws;
.
core by a separate and independent operation if
Fig. 3 is a perspective view of a fragmental
4.5 desired.
portion illustrating one of the jaws;
The positioning and guiding means is desig
Fig. 4 is a perspective view of a fragmental por
nated generally 40 and is shown in perspective
tion illustrating another of the jaws;
in Fig. 2 as of generally rectangular box-like
Fig. 5 is a section on line 5-5 of Fig. 1;
shape, having edge walls 4I and an end wall ¿i2
Fig. 6 is a section on line 6_-ä of Fig. l;
Fig. 'Z is a fragmental sectional View illustrat 50 while there are spanning broken away side walls
ing the work as being cut;
43 connecting the free ends of the walls il i . Thesey
Fig. 8 is a View similar to Fig. 7 illustrating a
walls 43 are provided with openings t4 for the
further relative operating position of the work
reception of the pivoting means H3 for pivotally
mounting this frame on the pivot of the members.
Fig. 9 is a sectional view illustrating another 55 In order to centralize and symmetrically position
and tool;
„
2,407,233
3
4
the frame with reference to the jaws we provide
flat leaf springs ¿l5 which are riveted in posi
the jaws toward the pivot means, and means to
tion as at 4S on the edge walls 4! and which
extend into engagement with the jaws 25 and
29 as shown in Figs. 1, '7, 8, and 9.
The end wall 42 is provided with an opening
di which is beveled as at ¿i8 for the easy posi
tioning of the work da, consisting of a wire core
pivotally mount said positioning means on said
pivotal means said jaws being movable relative
to said positioning means.
2. An insulating wire stripping device compris
ing a pair of members, means to pivotally relate
said members, said members providing handle
portions at one of their ends and cutting jaws
at their other ends, said jaws being notched to
5t and insulation 5l thereabout, through this
opening tl. This frame is so supported that 10 receive the wire while cutting the insulation
side walls of this opening 41 serves to direct the
work toward the pivot of the members. The side>
of the frame may be further enclosed by a web
portion 52 of the sidewall 43 as illustrated in
thereabout, a wire positioning means having a
portion located on the side of the jaws away from
the pivot means and provided with a guide sub
stantially in line with the cutting jaws when the
latter are in closed position to direct the work
Fig. 2.
into the jaws toward the pivot means, means to
In some cases instead of providing cutting
pivotally mount said positioning means on said
edges integral with the jaws 26 and 2l these cut
pivotal means, and resilient means acting be
ting edges may be formed separately as shown
tween each of said jaws and said positioning
in Fig. 10 at 53 and bolted to the jaws as at’5fl.v
In this manner the cutting edges may be easily 20 means for centering said positioning means rela
tive to said jaws.
and quickly removed and sharpened and re»3. An insulating wire stripping device compris
turned to place when desired.
ing a pair of members, means to pivotally relate
In operation the work 159 isv passed through the
said members, said members providing handle
opening ¿i? while the jaws 2t and 29 are spread
portions at one of their ends and cutting jaws
apart, and moved inwardly toward the pivot I1
until the end oi' the wort` engages the stop 32. 2,5 at their other ends, and a stop carried by one of
the jaws in line with and behind the jaws when
The handles 22 and 23 are moved toward each
the latter are in closed position against which
other that the cutting edges 27 and 3D may cut
the work may abut and having an opening there
through the insulation while leaving the wire
core 50 uncut.
30 through of a size to pass the wire but engage
the insulation.
.
The guide so locates the work that the fine
4. An insulating wire stripping device compris
wires of the core are not accidentally severed.
ing a pair of members, means to pivotally relate
After the insulation 5i is cut through as shown
said members, said members providing handle
in Fig. 7 the wire will be withdrawn which will
portions at one of their ends and cutting jaws at
pull the insulation off the wire core as shown in
their other ends, and a U-shaped stop carried by
Fig. 8. If it is desired that a longer uncovered
one of the jaws in line with and behind the jaws
or stripped portion of the wire be exposed, the
when the latter are in closed position against
wire will be again inserted so that the core 50
which the work may abut forming a pair of arms
will extend through space 33 of the stop while
the insulation will engage the arm 3d as shown 40 with an opening between its arm of a size to
pass the wire but engage the insulation.
in Figs. 9 and 1l. After so positioning the wire
5. An insulating wire stripping device com
the jaws will again be brought together and cut
prising a pair of members, means to pivotally re
through the insulation as shown in Fig. 9 and
late said members providing handle portions at
this cut insulation pulled off the end of the wire.
one of their ends and cutting jaws at their other
This operation may be quickly repeated that the
ends, said jaws being notched to receive the wire
desired length of wire core may be exposed for
while cutting the insulation thereabout, a wire
useful purposes.
positioning means comprising a rectangular
If it is desired to cut the wire core this may be
frame surrounding the jaws and movably sup
accomplished by positioning the wire core be
tween the sharpened protuberances 35 and 36 as 50 ported by said pivoting means and having a por
tion located on the side of the jaws away from
shown in Figs. 3 and 4 and again bringing the
the pivot means and provided with a guide sub
handles together to cut through the wire core.
stantially in line with the cutting jaws when the
Should work of different external diameter be
latter are in closed position to direct the wire
desired to be operated upon, the guide opening,
into the jaws towards the pivot means.
as 4l', may be changed by the use of a bushing
6. An insulating wire stripping device compris
56, as shown in Fig. l0, which will have the de
ing a pair of members, means to pivotally relate
sired internal diameter bore dl’. This removable
said members providing handle portions at one
and exchangeable bushing is held in place by
of their ends and cutting jaws at their other
binding screw 5l. If the core is of diiîerent size
ends, said jaws being notched t0 receive the wire
the cutters 53 may be changed to have a different
while cutting the insulation thereabout, a wire
sized notch in each of them and the stop 32 may
positioning means comprising a rectangular
also be changed to provide a diiîerent opening 33.
frame surrounding the jaws and movably sup
We claim:
ported by said pivoting means and having a por
l. An insulating wire stripping device compris
ing a pair of members, means to pivotally relate 65 tion located on the side of the jaws away from
the pivot means and provided with a guide sub
said members, said members providing handle
stantially in line with the cutting jaws when the
portions at one of their ends and cutting jaws at
latter are in closed position to direct ‘the wire in
their other ends, said jaws being notched to re
to the jaws towards the pivot means, and
ceive the wire while cutting the insulation there
springs acting between the jaws and the frame to
about, a wire positioning means having a por
f symmetrically position the guide with reference
tion located on the side of the jaws away from the
to the jaws.
pivot means and provided with a guide substan
JOHN J. GREER.
tially in line with the cutting jaws when the lat
ALBERT LUONGO.
ter are in closed position .to direct the wire into
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