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Патент USA US2133005

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Oct; 11, 1938.
w. WOLLENWEBER
2,133,005 '
ELECTRICIAN’S TOOL
Filed’ Jan. 8, 1957
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INVENTOR
‘ W112. W0 ll en web er
ATTORNEY
Patented Oct. 11, 1938
2,133,005
,UNITEDSTATES‘2,133,005,PATENT oFricE
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'ELEorRroIAN's 'rooL' * -
3 William VWollenyweber, Sacramento, Calif.
Application January 8, 1937, ‘Serial no. ‘119,659
7'
10mm. (on. 81—9.5)
This invention relates generally to‘ an, elec
trician’s tool and in particular relates to, and
it is my principal object to provide, an .elec
trician’s tool designed‘to facilitate "the removal
of the covering and insulation fromrelectric Wire
at those points on the wire where connection
a width substantially the distance between the
sides 5 ofnthe case. Rearward- of‘ thehead,
the case isz‘separated by a partition >6,’the tool
bar there being of such width as to normally
rest between: the partition and one wall 5 of
the case. If desired; a short screw driver‘ ‘I may
with other wires is to be made.
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be mounted on and project from the vback end
Heretofore, electricians have usually ‘used a of the case. Also if desired, another implement
common “jack” knife or‘ otherrhand knife to
10 remove the covering and insulation. Not only such ‘as a knife blade may be mounted in the 10'
.case to one side of the toolbar or on the op
was this a rather difficult and clumsyoperation, ' posite side of partition 6. A ring 9011 the outer
but it required too long to prepare and make the end of the tool bar serves as a means for easy
connections between separate wires. To over’
withdrawal of the toolbar from the case.
come'these objections to the use of. a." common
The head 4 is formed with a passage ,Illex
15 knife, I?have produced the‘ herein described tool.
tending from its. inner to the outer edge, said 15
'A furtherobject of my invention-is to provide passage being tapered as shown. The sides of
an electrician’s tool, which “mayv be effectively’. the head'lintermediate, the: ends of the passage
.used to twist onev wireaboutanother and to
make a'tight connection and positive contact
2 O ’ between the wires.’ The tool is alsoprovided
with wire stripping and cutting means.
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A further object ofthe invention is to pro
duce a simple and inexpensive devicefand' yet
one which will be exceedingly effective for the'
2 purpose for which it is designed.
These objects I accomplish by means of. such
structure and relative arrangement of parts as
‘will fully ‘appear by a perusal. of the following
. speci?cation and. claim.
In the drawing similar characters of ‘reference
. indicate corresponding parts in the several
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views:
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Fig. 1 is a side elevation of- the tool
tool bar raised from the case. .~
and at “the inner edge‘ of the bar are notched
as at H, the edges of the notches being .sharp.
The notched portion has another inward and 20
smaller notch I 2 for the purpose hereinafter
described."
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A. ‘cutting blade l3, preferably hollow ground,
is secured on the lower edge of the ‘tool bar.
by a bolt ‘l3. 'the cutting edge projecting be
25
tween the sides of the head and into the pas
sage to a termination close to the notch I2 and
'just inwardly'of the bottom of the sharp notches
II.
The blade is slotted, as at I5, and thus
is adjustable,
Both sides 5 of - the case are 30
‘notched, as at l6, toform a cradle for the pure
.vpose hereinafter described, said cradle being
the 1 so disposed as to match notches II when the
,
Fig. 2 is an end view of the tool.
tool bar‘ is in lowered position.
A bumper or
‘stop l1, preferably of‘, rubber, vis disposed in-the 35
‘Fig. 3 is a fragmentary sectional elevationi case at .thefforward end and serves to limit
taken'on line 3-3 of Fig. 2.
downward movement 'of the tool bar, the head
Fig. 4 is a transverse section taken on, liner 4 striking said'fbumper with the downward or
4--4 of Fig. 1.
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Fig. 5 is a transverse- section taken on line 7
‘ 5-—5 of Fig. 1.
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‘ closing movement of the bar.
The forward end of the case is formed with
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a two longitudinally, extending holes 18, one being
Fig. 6 is a transverse section taken on line J of a'greater diameter than the other; A trans
6-—6 of Fig. 1.
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versely . extending, substantially. semi-circular
Referring now more particularly to‘the char-w ; groove [9 is‘formed in the vcase end immediately
r acters of reference on the redrawing, "my; im ~ below said’ holes.
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in
proved
construction
tool comprises
to the
a case
caseor of
frame
an 1|,ordinary
similar
“jack” knife.‘ A tool bar 2 is pivoted, as'at 3,
within the case ‘at one end thereof for swinging
. Intermediate the ends of the case, the sides 5
are drilled ‘with transversely alined holes 20, while
the tool bar is notched, as at 2] , the notched por
tion being sharpened on one side to a cutting edge
5 O V movement in and out of the case. A snap spring - ZZ-and which edge, when the tool bar is. in closed 50
, of the character: commonly used’ in foldingw position, terminates in‘ a plane. a short distance .
' knives is employed in connection with‘ the tool ~
bar 2 and is disposed in the bottom ofthecase.
The tool bar is formed at‘itsouter or_ free‘
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end with a head, indicated generallyat 4, of
above ‘the'center of holes 21,], as clearly shown
in
Fig.5.
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Adjacent the rear or pivot end of the case, the
,upper edge of sides 5 are notched as at 23, one
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2,133,005
inside edge 24 being sharpened. The tool’ bar is so cutrthe covering and insulation may be easily
formed with a corresponding notch 25 having af stripped from the wire beyond the lines of out.
sharpened and cooperating cutting edge 26,
To cut a wire, it is placed across the case trans
versely in notches 25 and the tool bar lowered,
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causing cooperating cutting edges 24 and 26 fjto
mi
In use, my il’IHJI‘OVGd tool is employed as fol
lows:
,
sheari'the
If desired,
wire
cutting
with aedges
clean22cut.
or 26 msily
7 be used
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To expose a portion of the‘ wire in a length of
f insulated wire, in‘ order to make a tapped con
as a scraper blade to clean tarnished ‘wire, etc.’
From the foregoing description it will be readily
10 mection, the tool: bar is raised approximately 45°’ seen'that I have produced such a device as sub 10
and the Wire disposed in the cradle 'formed by stantially ful?lls the iibjects of the invention as
notches l?pThe ‘tool bar is then lowered or set forth herein.
i: v
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While this ispeci?cation sets forth in detail the
snapped down until notches gll engage the wire.
(See Figs. 3 and 6.) The entire tool is then present and preferred construction of the device,
practice such deviations from such detail 15
15 rotated about the wire &or 4 times in a clockwise a still
direction. With, such operation, ‘the notches I!
?rst scare the insulation and covering, and their
the blade l3 cuts away. the covering and insulae
tion and the uncovered portion of the wire then
Y20
engages in small notch l2 and‘thus cannot be
nicked for out. The covering and insulation cut
away as shavings, escapes through tapered open
ing l0. vIfdesired, duai blades (oneon each side
of the opening}, may be'used rather than'a single
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blade as shown.
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To connect another wire A to such exposed por
tionoi‘ wire B, the bare end of the other wire
is placed in one of holes I 8 (whichever the cor
rect diameter); and the wire B placedein groove
30 I 9 and the tool passed about vgire B causing wire
A to be woundrtightly about vgire B. The initial
position ‘of such wires is shown in dotted lines
inFig. 3.
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To strip the covering from the end of a wire,
appended claim.
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Having thus described my invention, what I
claim as new and useful and desire to secure by 20
Letters Patent is:
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An electrieian’s tool comprising a case having
spaced sidesifa tool bar pivoted in the case at one
endiifor movement in and out of thesamegthe
upper edges of the case adjacent the oppositei‘end 25
having matching notches forming a cradle for?the
reception of a covered and insulateo'gwire, a cut
ting head mounted on the euter end of the bar,
said’ head having a passage therethrough from
the'edge adjacent the cradle to'the opposite edge,
the sides oi the head being notched to engage
over awire' on the'tcradle, a cutting blade, and
means mounting said blade on the'head with the I
cutting edge thereof in. position betweenrlsaid
the wire-is placedrthreugh holes 20, the tool bar
sides of the head and adjacent the passage,
lowerged;v and the tool then rotated about the
whereby with relative rotation between the tool
and wire on the cradle and engaged by the head,
wire, illustrated in Fig. 5 as 0. Cutting edge 22
- cuts through the covering and insulation but
does not cut the wire due to its con?guration and
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may?oe resorted to as do not form a departir
fromthe'spirit of the invention, as deiiined by the ,
termination short oi'the center of holes 20. When
the cutting blade will cut away the covering and
insulation of the adjacent portion of wire.
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WILLIAM WOLLENWEBER.
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