close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2110968

код для вставки
March 15, 1938.
2,1Wy968
H. J. BLAKESLEE
ELECTRICAL CONNECTION BLOCK
Filed Jan. 14, 1937
IMM/Mam,
íœmßawwew
ß ‘
'may
Patented Mar. 15, 1938
2,110,958
UNITED ?s'm'res PATENT OFFHQE
2,110,968
ELECTRICAL CONNECTION BLOCK
Henry J. Blakeslee, Marlboro, Conn.
Application January 14, 1937, Serial No. 120,478
5 Claims.
This invention> relates to those blocks that are
designed to be interposed between the terminals
of electric circuits, which have means for open
ing the circuits for testing and similar purposes.
Ci
The object of the invention is the production
of a block which is compact, has few parts which
are cheap to manufacture and assemble, and
which can be easily and quickly manipulated for
opening and closing the circuit across the block,
and more particularly a block of this character
which is so constructed that it is very easy to
e?ñciently secure the terminals of the circuit
Wires.
In the embodiment of the invention illustrated
this object is attained by providing an insulating
base with a permanently ñxed threaded post upon
which is a nut arranged to secure the post to the
base, a nut adapted to clamp the terminal of a
circuit to the securing nut, and a nut adapted to
20 be turned into and out of contact with a con
ducting plate that is ñxed to the block.
The
plate has a forked end with an opening of such
shape that a looped circuit terminal may be easily
passed into it, and located about the post, and of
25 such size that the terminal clamping nut may be
easily reached and manipulated through the
opening when the conducting plate is secured in
place. The contact nut is of such size that when
screwed down the post it will bind against the
30 plate and complete the electrical connection be~
tween thev post and the plate.
Fig. 1 of the accompanying drawing shows a
plan of a single line block which embodies the
invention.
Fig. 2 shows a plan with the contact nut
35
omitted.
Fig. 3 is a section on the plane indicated by
the dotted line 3----3 on Fig. 1.
Fig. 4 is a section on the plane indicated by
40 the dotted line 4_4 on Fig. l.
Fig. 5 is a View of the conducting plate.
The base I of the block may be made of any
suitable insulating material, preferably porcelain.
In the construction illustrated a conducting plate
45 2 is secured to the face of the base by a `screw 3.
One end of the plate shown is provided with a
screw 4 by means of which the terminal of a
circuit may be secured. The other end of the
plate is forked, having a circular opening 5 with
50 a slot 6 opening thereto. A threaded post 'I
passes from the bottom up through the base and
opening in the plate and is permanently secured
to the base by a nut 8 which is screwed down the
post to the bottom of a recess 9 in the base. On
55 the post in the recess 9 is a nut I0 of a size that
(Cl. 200-158)
allows it to pass through the circular opening
in the plate and be screwed down the post to
clamp a circuit terminal between it and the nut
that secures the post in place. This nut I0 may
be, and preferably is, designed to be turned up or
down by a socket wrench. On the post above the
plate is a nut II. The diameter of the bottom
of this nut II is greater than the circular open»
ing in the plate so that when the nut is screwed
down it will contact with the plate, and when it
is screwed up it will disconnect the post from
the plate.
When the block is located in place of use with
the conducting plate 2 secured thereto, one line
terminal may be connected to the plate 2 by the
screw 4. The contact nut II and the terminal
clamping nut I0 are removed. A line terminal
may then be looped around the post and passed
down against the nut 3 which holds the post in
place, this being permitted by reason of the
notched or forked end of the plate. The nut I 0 is
then screwed down so as to clamp» the terminal
securely between it and the post holding nut 8.
Finally the contact nut II is screwed upon the
post.
,
25
This simple construction enables a secure and
efficient electrical connection to be easily made
between the terminal and the post without dis
turbing the conducting plate. If it is desired
to change a circuit terminal or should for any
reason a new terminal be required, the two nuts
I0 and I I may be removed from the post and the
01d terminal removed and the new terminal
placed in position and secured as described, thus
permitting an efficient connection of the terminal ‘
without disturbing the conducting plate.
The invention claimed is:
l. An electrical connection block comprising a
base, a conducting plate secured to the base, said
plate having a circular opening and a slot open- l
ing thereto, a threaded post extending forward
from the front of the base through said opening
in the plate without contact with the walls there
of, a nut threaded on the post on the front side
of the base for securing said post to the base, a ._
nut threaded on the post in front of said secur
ing nut and back of the plate, for clamping a
circuit terminal to the post, and a nut threaded
on the post in front of the plate for electrically
connecting and disconnecting the post and the 50
conducting plate.
2. An electrical connection block comprising a
base, a conducting plate secured to the base, said
plate having an opening in one end, a threaded
post extending forward from the front of the base 55
2
2,110,968
through said opening in the plate Without contact
forked opening at the other end, a threaded post
with the walls thereof, a nut threaded on the post
on the front side of the base for securing said post
the front thereof through the forked opening in
to the base, a nut threaded on the post in front of
the plate without Contact With the Walls of said
said securing nut and back of the plate, for clamp
ing a circuit terminal to said securing nut, and a
nut threaded on the post in front of the plate for
opening, said post cn the front of the base having
a nut threaded thereon beneath the forked open
ing in the plate for detachably securing a circuit
terminal to the post and on the front of 'the base
having a nut threaded thereon above the forked
electrically connecting and disconnecting the post
and the conducting plate.
10
3. An electrical connection block comprising a
base, a conducting plate secured to the base, said
plate having a circular opening and a slot opening
thereto, a threaded post extending forward from
the front of the base through said opening in the
plate Without contact with the Walls thereof, a
nut threaded on the post on the front side of the
base and back of the plate, for clamping a circuit
terminal to the post, and a nut threaded on the
post in front of the plate for electrically connect
ing and disconnecting the post and the conduct
ing plate.
4. An electrical connection block comprising a
base, a conducting plate secured to the front of
the base, said plate having means for the attach
ment of a circuit terminal at one end and a
secured to the base and extending forward from
opening in the plate for electrically connecting 10
and disconnecting the post and plate.
5. An electrical connection block comprising a
base having a recess therein, a conducting plate
secured to the base, said plate having a forked
end extending over said recess, a threaded post 15
extending from the base through said recess and
the forked end of the plate Without contact there
with, a nut threaded on the post at the bottom of
said recess for securing said post to the base, a
nut threaded on the post in said recess for clamp 20
ing a circuit terminal to the post securing nut,
and a nut threaded on the post for electrically
connecting and disconnecting the post and the
forked end of the conducting plate.
HENRY J. BLAKESLEE.
25
Документ
Категория
Без категории
Просмотров
0
Размер файла
251 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа