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Патент USA US2411014

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NOV. 12, 1946.
H_ R WARNKE
‘
2,411,014
TERMINAL BLOCK
Filed June 21, 1944
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HERBERT 'R- WRRNKE
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Patented Nov. 12, 1946
‘
.» v2,411,014
_
UNITED STATES PATENT OFFICE
2,411,014
TERMINAL BLOCK
Herbert R. Warnke, East Orange, N. J., assignor
to United States Instrument Corporation, East
Orange, N. J ., a corporation of New Jersey
Application June 21, 1944, Serial No. 541,369
6 Claims. (Cl. 173:—324)
1
2
This invention relates to electrical connectors
and in particular to terminal blocks which serve
as points of assembly and connection of the
terminals of a plurality of groups of conduc
tors.
The generic advantages of this class of mul
tiple connectors include the elimination of spliced
.
panel or chassis and the other row of connec
tions below the same.
_
,
Other ‘objects and features of novelty will ‘be
apparent from the following speci?cation when
read in connection with the accompanying draw
ing in which certain embodiments of the in
vention are illustrated by way of example.
In the drawing:
or soldered joints between individual wires, the
' Figure 1 is a top plan view of an assembly of
possibility of the quick detachment of any de
sired conductor, and the ease of assembling, in 10 terminal blocks embodying the principles of the
stalling, and connecting instruments and equip
ment and distinguishing the various circuits in-.
volved.
.
Particular advantages are afforded however
by the present invention over the prior pro
posals which have been made in this ?eld.
There has been provided a novel and improved
terminal block which is of compact construc
tion giving maximum strength, a'high voltage
breakdown, and greater convenience in making
connections in the smallest possible space. .
Improved arrangements and spacings of ter
invention;
Figure 2 is a view in front elevation of the
bank of terminal blocks shown in Figure 1;
Figure 3 is a vertical sectional view of the as
15 sembly taken on line 3.—3 of Figure 1; and
Figure 4 is a fragmentary perspective view of
one of the blocks.
In Figures 1, 2, and 3 of the drawing there is
shown an assembly comprising three terminal
20 blocks constructed in accordance with the pres
ent invention mounted in stepped or echelon
formation on two supporting brackets adapted
to be secured to a panel or other framework of
minal barriers permit the use of various types
the installation. However, it is understood that,
of terminals without arc-over up to and above
2500 volts, A. C., R. M. S.
25 except as otherwise claimed herein, the in-‘
dividual blocks may be used either singly or in
A further feature of the invention is the pro
any other desired combination.
vision of metal terminal inserts which extend
The novel terminal blocks illustrated inthe
through the block from one face to the other.
drawing are designated generally by the ref
This permits a greater knurled surface area on
the insert which results in a better bond with 30 erence numeral Ill and each of the blocks com
prises an elongated body portion ll preferably
the Bakelite or other insulating material of
of substantially rectangular cross-section and
which the block is made. Thus the possibility of
two depending squared feet or pedestals I! one
the inserts becoming loose when connections
at each end of the body portion; These foot or
are being made or as a result of vibration or
shock, is eliminated.
'
35 pedestal portions I2 are provided with openings
l3 through which screws or bolts may be passed
to secure the blocks in their installed positions.
The body portion ll of each block is provided
at spaced points along its length with the me
sides thereof. For example, when employed in
intercommunication, signal systems, or the like, 40 tallic inserts or bushings l5. These bushings
are provided interiorly with standard screw
equipment connections may be. made at the un
threads for the reception of screws, bolts, or
derside of the block and connections made by
binding posts which are adapted to secure the
- installing activity may be effected at the top of
conductor terminals to the block. Exteriorly
the block. This does away with the necessity
of removing the'equipment connections when in 45 the inserts I5 are knurled as indicated at Hi.
This knurling is preferably extended through
stalling activity’s connections are made, thus
out the entire outer cylindrical surface of the
preventing loose or misplaced equipment con
insert thus assuring a perfect bond with the
nections.
.
Bakelite or other material of which the mate
Further objects of the invention include the
provision of indicia bearing means for affording 50 rial is mainly formed.
These threaded inserts l5 extend throughout.
ready identi?cation of the terminals, novel as
sembly mountings for grouping two or more
the thickness of the block and, as shown best in
the upper portion of Figure 3, the bolts or screws
blocks, and simple convenient means for at
taching the blocks to panels or chassis, whereby
20 and 2| are threaded into the upper and lower
one row of connections will be disposed above the 55 ends of the insert serving to secure to the upper
This feature also permits one series of con
nections to be made ‘on one side of the block and
the other associated connections on the opposite
'
8,411,014
3
u
portiomoftheblockthewiretermi
22 and?fromwhichthe conductors 24'
2| extend.
I
boltlltowhi'chanutl‘lisapplied. Another,
in the bracket 8| adjacent the nut II.
An important feature of the assembly of ter
22 and II in order to secure them more rigidly
in place and effect a better conducting con
'
4
Ifdesiredlockwasherssuchas‘ opening ll, similar to that shown at It, is made
indicated at It may be interposed between the
.headsofthescrews Ilandilandtheterminals
nection.
I
over and providedwith an opening to receive a
minal blocks, and one which obviously can be
applied to other arrangements of these blocks
involves the cover plates ll.
.
Although only a few terminals are shown in
These plates are
made of thin sheets of ‘insulating material‘ and _
the figures of drawing, it is understood that the 10 are interposed beneath each of the blocks ll,
terminals or leads may be applied to the upper
being provided adjacent their ends with openings
and lower ends of all of the inserts I! through
out the lengths of the blocks ll.
through which the bolts I‘, II, or I! may extend,
the plates being secured rigidly in position along
with the block ll. These plates ll underlie the
legs l2 and the lower barriers or partitions II,
and preferably extend forwardly beyond the front
'
Between adjacent terminal inserts l5 and at
the ends of the body portion ll of the block
ll there are provided the upwardly extending
partitions or barriers ll, probably best shown in
faces of the blocks II to provide a narrow mar
the perspective view in Figure 4. These barriers
gin upon which appropriate indicia may be etched
are preferably, cast integrally with the block
or inscribed, in order to identify the adjacent
when it is formed and they provide arc-prevent 20 terminals. Such indicia are indicated at II in
ing means between the laterally adjacent ter
Figure l of the drawing, and may be used alter
minals, whereby relatively high voltages may-be
natively to the indicia 33 inscribed upon the
employed in the conductors adapted to be loined
blocks themselves as in Figure 4. These plates
at the block.
~
I
80 not only provide indicia bearing means‘but
Similar downwardly projecting barriers ii are 25 also serve as insulated covers for the terminals
provided which are disposed at spaced points
between the lower parts of the supporting legs
I: of the terminal block. These partitions or
on the undersides of the blocks and thus pre
vent any possible arcing-over.
It is understood that various changes and
barriers perform a function similar to that of
modifications may be made in the embodiments
the upper barriers 30 but in connection'with the 30 illustrated and described herein without depart
lower series of terminals.
'
ing from the scope of the invention as de?ned
In one embodiment of the ‘invention, as illus
by the following claims.
Having thus described the invention what is
trated in Figure 4, suitable indicia identifying
the circuits may be inscribed upon the front face
claimed as new and desired to be secured by Let
of the block as indicated at 33. However, alter 35 ters Patent is:
native indicating means are provided in another
1. A terminal block assembly comprising a plu
illustrated example which will be presently de
rality of substantially rectangular terminal
blocks arranged in echelon whereby no plane
As already suggested, the novel terminal blocks
containing a surface of any one of said blocks
scribed.
.
_
It may be employed singly or in any desired com
40 intersects a surface of any other block, brackets
bination in association with panels, switchboards,
or any other type of installation‘, and suitable
fastening means are applied to the openings ii
at the ends of the blocks. In the arrangement
shown in Figures 1, 2, and 3 of the- drawing 45
three of the terminal blocks I II are disposed in
stepped formation, being supported by the end
brackets I5. These brackets are preferably made
of sheet metal having vertically extending body
portions 36 from which an inwardly turned hori
zontal base ?ange 31 extends. This base ?ange
has an outwardly extending ear 3! provided with
supporting said blocks in such relationship, and
opposite pairs of faces on each block which are
parallel with the corresponding faces of all other
blocks being provided with conductor terminal
attaching means.
2. A terminal block assembly comprising 9, plu
rality of substantially rectangular terminal
blocks arranged in echelon, brackets supporting
said blocks in such relationship, and opposite
pairs of faces on each block which are parallel
with the corresponding faces of all other blocks
being provided with‘ conductor terminal attach
a perforation 39 intended to accommodate a
ing means, said faces also provided with arc-pre
screw, bolt, or other fastening means for secur
venting barriers one between each adjacent ter
ing the bracket 35 to an instrument or switch 65 minal attaching means.
board supporting frame or panel. At the opposite
3. A terminal block assembly comprising a plu
end of the ?ange 31, there is provided a hori
rality of substantially rectangular terminal
zontal projection 42 which is also perforated to
blocks arranged in echelon, brackets supporting
receive the head 43 of the securing bolt H which
said blocks in such relationship, and opposite
passes through the leg l2 of the lowermost ter 60 pairs of faces on each block which are parallel
minal block III. The upper end of the bolt M
with the corresponding faces of all other blocks
is provided with a nut 45 and preferably‘with
being provided with conductor terminal attach
a lock washer 48.
ing means and a plurality of conducting means
Intermediate the height of each bracket 35
passing through each block and each connecting
a stepped portion of the bracket is bent inwardly 66 one of said attaching means on one surface of
to provide a ?ange l1 and this ?ange is pro
the block with a corresponding one on the op
vided with an opening through which a bolt 49
posite surface.
,
‘extends in order to secure a leg of the inter
4. A terminal block assembly comprising a
mediate block II to the bracket. A nut‘IO is
plurality of substantially rectangular terminal
applied to the lower end of this bolt, and a win 70 blocks arranged in echelon whereby no plane
dow opening 52 is punched in the bracket 35
containing a surface of any one of said blocks
laterally of the nut 50 to provide access through
intersects a surface of any other block, brackets
. the body portion 16 of the bracket.
supporting said blocks in such relationship, and
A similar arrangement is made at the upper
opposite pairs of faces on each block which are
end of each bracket 35 where a ?ange 55 is bent ‘(8 parallel with the corresponding faces of all other
- 2,411,014
blocks being provided with conductor terminal
attaching means, said faces also provided with
arc-preventing barriers one between each ad
jacent terminal attaching means and a plurality
of conducting means passing through each block
and each connecting one of said attaching means
6
adjacent the corresponding surfaces of an ad
' joining block.
6. A terminal block assembly comprising a plu
rality of substantially rectangular terminal
blocksarranged in echelon, brackets supporting
said blocks in such relationship, and opposite
on one surface of the block with a corresponding
one on the opposite surface.
pairs of faces on each block which are parallel
with the corresponding faces of all other blocks
pairs of faces on each‘block which are parallel
?ns of certain of said block surfaces which are
being provided with conductor terminal attach
5. A terminal block assembly comprising a
ing
means, said faces also provided with a series
10
plurality of substantially rectangular terminal
of projecting arc-preventing ?ns one between
blocks arranged in echelon, brackets supporting
each adjacent attaching means, and a thin (in
said blocks in such relationship, and opposite
sulating plate applied to the outer edges of the
with'the corresponding faces of all other blocks
adjacent the corresponding surfaces of an ad
being provided with conductor terminal attach 15 joining block, said plates being secured to said
ing means, said faces also provided with a series
brackets and having a portion extending beyond
of projecting arc-preventing ?ns one between
the edge of the block to which it is applied, and
each adjacent attaching means, and a thin in
indicia inscribed on said extending portion iden
sulating plate applied to the outer edges of the 20 tii’ying the terminals attached to the block.
HERBERT R. WARNKE.
fins of certain of said block surfaces which are
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