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Патент USA US2109073

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FehZZ, was.
M. B. .NIEMAN
2,109,073
WIRE TERMINAL LUG
Filed Feb. ~ 11, 1935
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Patented Feb. 22, 1938
2,109,933
UNITED STATES PATENT OFFI€E
2,109,073
WIRE TERMINAL LUG
Marvin B. Nieman, St. Louis, Mo.
Application February‘ 11, 1935, Serial No. 5,921
3 Claims.
(Cl. 173—269)
My invention relates to terminal lugs or clips
for electrical conductors, and more particularly
to such lugs or clip-s formed of sheet metal.
One object of my invention is to provide a
5 sheet metal terminal lug of relatively simple and
convenient form, one portion thereof compris
ing a pair of sleeves arranged in spaced relation
side by side and being pierced intermediate of
these sleeves by an aperture for engaging a
10 binding post of a terminal, and another portion
thereof, longitudinally spaced from the ?rst
mentioned portion, comprising a pair of laterally
disposed tabs adapted for folding over and down
pose of electrically connecting a pair of conduc
tors to that board.
Figure 2 is a similar view of the terminal lug
of Figure 1 shown detached from the instrument
board and its terminal, the ends of two wires or
conductors being shown as engaged thereby.
Figure 3 is a side elevation of the detached
terminal lug, the subject matter of my inven
tion.
Figure 4 is a section on the line 4-4 of Fig 10
ure 3.
Figure 5 is a section on the line 5—5 of Fig
ure 3.
upon the insulated ends of a pair of electrical
15 wires or conductors for connecting sameto the
terminal lug, the stripped ends of the said wires
being inserted within the said sleeves and locked
Figure 6 is-a diagrammatic or plan View of a
blank well adapted for forming up so as to eifec 15
in place by turning down the nut of the binding
post thereupon. Another object of the inven
accordance with my invention.
In practising this invention I provide a blank
as indicated generally at Ill in Figure 6, the 20
same being made of any suitably conductive ma
terial, such as metal, and including a medial
section or fold I I and lateral sections, folds or
Wings I2 and I3, which are designed to fold in
wardly upon the medial section, as shown in the
other views of the drawing, to form the com
20 tion is to provide a sheet metal terminal lug or
clip, one portion thereof comprising three folds
or thicknesses of the metal forming a pair of
laterally spaced sleeves for engaging the stripped
extremities of a pair of electrical wires, there
25 being an intermediate aperture for engaging a
binding post of a terminal, and the other and
longitudinally positioned portion of the same lug
comprising a pair of laterally spaced tabs adapt
ed for folding over inwardly and down upon
30 the insulated ends of the said wires immedi
ately back of the stripped ends thereof for pro
tecting that insulation, whereby the said wires
may be ?rmly and electrically connected to the
said terminal. Still another object is to provide
a form of metal blank or blank of any suitably
conductive material adapted for conveniently
tually embody and provide the constituent parts
and elements of a terminal lug or clip made in
pleted device. The three sections, II, I2 and iii
are demarked or laid out to extend longitudi
nally of the blank, as indicated in the dotted
lines in Figure 6, and are of approximately equal
area. As thus demarked the three sections are
seen to be of an elongated form, so that when
they are folded together they form the substan
tially elongated terminal lug or clip indicated
generally at I4 in Figures 1, 2 and 3. The blank
It is further demarked at opposite sides, at sub
stantially medially aligned points, by incisions
forming up into a pair of laterally spaced sleeves
for engaging the stripped ends of a pair of elec
trical wires, with an aperture for engaging a
4 O binding post formed between the sleeves, and a
pair of separate and laterally spaced sleeves lon
gitudinally aligned with the ?rst named sleeves
and adapted for engaging the insulation covered
portions of the said wires immediately back of
45
the stripped ends thereof.
side portions I 6 of the blank, as de?ned at one
side of the notches I5, are extended somewhat
With foregoing objects and advantages in View,
so spaced and located upon a line extended
attention is directed to the several structural
features of the invention and its adaptation in
use, as exempli?ed in one preferred embodiment
thereof illustrated in the accompanying draw
ing, and wherein:
Figure 1 is a top plan view showing a terminal
lug made in accordance with my invention, as
55 mounted upon an instrument board for the pur
or notches I5 extended substantially half-way
thru the outer sections I2 and I3, on a line ex
tending transversely of the blank.
The aligned 40
beyond the side portions I‘! at the other side of
said notches, for a purpose later to be pointed
out. The side portions I6 of the sections ll, I2 45
and I3 ‘are pierced with aligned apertures I8,
transversely of the blank, that when the sec
tions are rolled over and folded down together
for the purpose of bringing these apertures into 50
registry as shown in Figure 5, for forming in
the completed device the medial binding post
aperture I8a, there will be also formed and pro
vided the laterally disposed wire engaging sleeves
I6a, one at either side of the aperture l8a, adapt 55
2
2,109,073
ed for engaging the stripped extremities 28a of
the outer sections, portions of the blank at one
the electrical wires or conductors 2i], normally
side of these notches being extended somewhat
beyond the portions at the other side of the
notches, the portions of the sections at the ex
tended side of the blank being pierced with aper
tures so spaced and located in alignment, that
when the three sections are rolled and folded to
covered by the insulation 20b. Similarly the'free
marginal portions or tabs I‘! may be rolled over
inwardly to form the sleeves I ‘la vfor engaging the
insulation covered ends 2% of the said wires, im
mediately back of the stripped extremities, thus
protecting the insulation at those points and co—
operating with-the sleeves l?a for locking the
10 Wires in place within the lug.
In the manufacture of this lug or clip the two
pairs of sleeves [6a and Ila, are all preferably
formed up ready for the free or loose insertion
gether for bringing the said apertures into registry
there will be also formed two laterally disposed
wire engaging sleeves for engaging the stripped
extremities of a pair of electrical conductors
and two somewhat larger sleeves longitudinally
aligned with the ?rst mentioned sleeves for en
of the ends of the wires, in manner pointed out.
That is to say, these sleeves are formed slightly
gaging the adjacent insulation covered portions
of those conductors immediately back of the 15
larger in diameter, than the stripped portions
stripped ends thereof, whereby said ?rst men
tioned sleeves'will be positioned against spread
ing by a'binding post engaged in the apertures
and insulated portions, respectively, of the said
ends, so that the ends may be inserted'freely into
place within the lug. In the use of the lug, after
20 the wire ends are ?rst inserted invthe manner
pointed out, the sleeves are pinched tightly down
onto the wire ends, thus locking them ?rmly in
place. When this is done, the lug maybe located
upon the binding post 2| of the terminal 22 which
is secured by a screw 23 to the instrument board
24. This is accomplished by pas-sing the binding
post thru the aperture l8a of the lug, and turn
ing down the nut Zia. upon the threaded post,
and tightly down upon the lug. In this operation
30 the nut preferably overlaps the sleeves [6a, as
shown in Figure 1, whereby means is afforded
for eifectually pinching and pressing the walls
of the sleeves inwardly upon the stripped ends
of the wires for locking them in place and also
for insuring good electrical connection.
This device affords a simple and effective means
for connecting a pair of wires to a terminal block
or instrument board. It has other and varied
uses however, as for connecting a pair of wires
40 to a single wire, or for connecting the parted ends
of a broken wire. And while I have herein shown
and described a certain embodiment of my in
vention and certain structural features thereof,
it is understood that I may vary the structural
and will be clamped by a means- carried by the
binding post.
.
2. A wire terminal lug formed of a blank of
sheet metal notched at opposite edges and fold,
able transversely of a line passing through said
notches into three approximately equal sections,
the resulting portions of the blank at one side of 25
the de?ning notches being rolled over and folded
down upon the medial section, said medial sec
tion having an aperture therethrough, each fold
‘having an aperture therethrough, said apertures
being aligned to'form a three-fold binding post ,30
end with sleeves at the b-ights of the folds for.
engaging the stripped extremities of two- wire
conductors, the said sleeves being held against
spreading by a binding post engaged in said ap
ertures and the end portions of the blank at I35
the other side of the de?ning notches being rolled
and folded down over upon said medial section
to form sleeves for engaging the insulation cov
ered ends of the wires immediately back‘of the
said stripped extremities thereof.
_
~
,
r40
3. A terminal lug of sheet metal, one end there- -
to practical use, not departing however from the
spirit and scope of the invention as de?ned in the
of comprising three superimposed folds of metal,
each fold having an aperture therethrough, said
apertures being aligned to engage a binding post,
there being a pair of relatively small sleeves pro :45
vided at the bights of the folds for engaging the
stripped extremities of wires, and held against
appended claims.
spreading, by the engaged binding post and back
features of the invention so as best to adapt same
I claim:
7
'
1. In a device of the kind described, a blank
' of conductive material dimensioned for demark;
ing into three substantially parallel sections
adapted for folding together; upon the central
section to form a terminal lug, the blank being
notched at opposite edges substantially half thru
of said pair of sleeves a pair of integrally con
nected, laterally spaced and relatively large 50
sleeves longitudinally aligned with the aforesaid
smaller sleeves, for engaging the insulation cov
ered portions of the wires immediately back of
the stripped extremities thereof.
MARVIN B. NIEMAN.
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