Note: Descriptions are shown in the official language in which they were submitted.
~;2~8
~ his invention relates to an impro~ed wire
stripper ~or removingthe end portion from an electric
lead sheath.
Stripper~ of the above type ars already
know~ on the market. O~e ~f th~m, forming
the subject matter of a prior Utility Itlodel ~pplication
by this Applicant9 comprises a first lever defining a
handle and a ~ir~t jaw portion, whereto a contoured bo~
articulated which forms the seco~d jaw for cooperation
10 with said ~irst jaw in gripping an end of a
cable ~o be ~tripped. Articulated to said body is a
second le~er forming the ~ ~nd ~andle of the stripper
and being mounted for a swinging movement relatively to
the firsthandle ~g~Dst ~hebia~orce o~ a return ~pring.
Depressions are formed in the two le~er~ whiçh
are adapted to accommodate sheath indenting knive~
effecti~e to remove the sheath with a further
movement o~ the le~er.
In addition ~o thi~, at the articulation point
between the body and second lever9 there are formed
two respecti~e &aYities ~herein t~o blade~ fit which
~tana out to form a sort of cutter ~or cutting through
the electric ~cable. . The pivotal connection
between the body and second lever is currently
accomplished by mea~ o~ a rivet pa`ssed through both
these p~r~ and up~et at its opposed ends such a~ to
enable the body to be rotat~d relatively to the le~r
without an~ signi~icant axial pl~yO
It has be~n ~ound that with u~e~ the ri~et
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tends to wear out rather rapidly, whereby the cutter loses its
effectiveness because the blades separate from each other and
allow the cable to be cut to be inserted therebetween, thereby
causing the blades to jam, i.e. the laterial distance between the
blades when closed is longer than the diameter of the cable to be
cut and the cable tends to jam between -the bladesn
Accordingly, the technical object of this invention is to
imporve the wire stripper of the type described above such as to
obviate the cited problem.
Within this object it is a task of this invention to
provide an improvement which, for a given effectiveness, can
introduce no engineering complexities, thus making this stripper
quite competitive from an economical standpoint.
This object and this task are achieved by an improvement
characterized in that the body incorporates a metal ring
wherethrough a bushing is passed axially, one end whereof is
engaging prismatically with the lever, and a screw being inserted
through said lever from the opposite side to the side wherefrom
said bushing is received to engage with said bushing.
Further features of the invention will be more apparent
from the following description of the embodiment thereof,
illustrated in the accompanying drawing, where:
Figure 1 is a side view of the stripper, shown partly in
section to bring into full view enclosed parts thereof; and
Figure 2 is a sectional vlew taken along the line
2~84
II-II of Pigure 1.
The shown wira tripper comprlse~ a first lever
1 made o~ a sheet metal stamping which i3 bent o~er
to form a ha~dle 1a o~ arcuate configuration and
having a U-like cros~-~ectional shape open inwardly
of the stripper. ~wo flat portions 1b,1c extend
; from the lever, of which the former iR shown partly
cut away. Secured bet~een said flat portions is an
element,defining a ~irst jaw 2 at ~ha ~reeend thereo~.
A body 3 is lQcated between the flat portions 1b,
1c, which is provided with an expansion forming a seco~d
jaw 3a, be~g a mirror imageof the ~h~t jaw 2, and a port~n
3b of smaller thicknPss~ ~he portion 3b ha a circular
; lug 3c wherein a depression 3d is formed which has a
small metal plate 4 defining a blade 4a embedded
therein.
hole is proYided centrally through the circular
lug 3c ~or accommodati~g a pi~ot pin therethrough
for articulating the body 3 to a second lever 5O
The ~eco~d lever 5 ha~ a cavit~ 5a of compleme~tary
shape to that ~ormed in the portion 3b~ with a
circular region 5b which is intended to receive the
lug ~c therein ~nd has a throughgoing hole ~or acco~mod~t-
iDg the pivot pl~.
~ s~c~et 5c is formed in the c~ r r~ 5b~ ~h~re~
a small metal plate 6 is embedded which forms a blade
6a adap~ed to cooperate with the blade 4a. The blades
4a a~d 6a j ointly define a out~ er for cu~ing through
cables to be stripped.
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A composite construction pivot pin is provided for
articulating the body 3 to the second lever 5. More specifically,
a socket 3e is formed in the body 3 wherelnto a metal ring 7,
which is a sleeve with a curved wall, is inserted, wherethrough a
bushing 8 is passed, which has a small flange 8a adapted to remain
embedded in the socket 3e and cover the metal ring 7.
The bushing 8 has a faceted end which engages in a
complementary recess 5d of the second lever 5.
Thus, a prismatic coupling is formed between the second
lever 5 and bushing 8 which prevents the bushing from turning
relatively to the lever itself.
In order to hold the bushing 8 axially against the second
lever 5, a screw 9 is provided which extends axially through the
second lever 5 and engages into an axial hole 8b of the bushing.
As it may be appreciated, the invention fully achieves
its objects.
It should be particularly noted that friction occurs
between the bushing 8 and metal ring 7 as the lever is operated.
Any play developed by wear of the two parts may be taken up by
appropriately tightening the screw 9.
The recess accommodating the bushing in the lever 5 will
allow for such a small take-up movement in the axial direction.
In practicing the invention, the bushing 8 may be ~ormed of a high
strength plastic material, such as the one known in the trade as
NYLON, and the screw g may be of the self-tapping variety.
To facilitate introduction of the screw through the
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bushing, the latter ma~ be prQvided with a hole
having a sub~ts~tially hexagonal cro~s-sectional
~hape .
