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Патент USA US2410746

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Nov. 5, 1946.
Filed Sept. 2, 1942
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Patented Nov. 5, 1946
Adele S. Raettig, Hoboken, N. J.
Application September 2, 1942, Serial No. 456,992
1 Claim.
This invention relates to a switch and refers
more particularly to a magnetically operated se
lective switch used for energizing or otherwise
in?uencing any one of several circuits.
An object of the present invention is the pro
vision of an effectively operating circuit control
ler or switch of simple, compact and sturdy con
(01. 200-87)
II, the number of which is equal to the number
of terminals I2 which are to be controlled by
the switch.
Each terminal l2 has the form of a conduct
ing bolt l3 extending through the bottom 9 of
the casing and carrying a nut l4 and a wire l5
leading to any suitable circuit not shown in the
struction, which is inexpensive to manufacture
drawing. The upper end of the bolt l3 has the
and which may be conveniently utilized for the
form of a cylinder IS having recesses which con
purpose of closing any one of a comparatively 10 tain two opposed ends ll of a swingable conduct
large number of circuits.
Another object is the utilization of a perma
nent magnet for the purpose of actuating selec
tively any one of several levers used for estab
lishing an electrical connection between a num
ing plate l8 shown separately in Figure 4. Thus
the plate I8 is pivotally or swingably supported
by the cylinder 16. The plates [8 are made of
any suitable conducting and magnetizable ma
ber of terminals.
Other objects of the present invention will be
In each compartment ll there is a separate
plate l8 carried by its terminal 12. The termi
come apparent in the course of the following spec
nals 12 are preferably arranged along a circle in
the center of which the central terminal is is
In accomplishing the objects of the present in- ~' located. The plates [8 are normally situated in
vention it was found desirable to‘ provide a cen
a somewhat inclined position with their lower
tral terminal, which may be grounded, if desired,
ends located below a conducting disc 20 carried
and to arrange other terminals about the cen
by a cylinder 2| constituting a part of the central
tral terminal, each of said other terminals being
terminal 19.
provided with a separate magnetizable conduct
The cylinder 2| is integral with a conducting
ing swingable member which may be attracted by
bolt 22 extending through the bottom 9 and car
a permanent magnet to provide an electrical con
_rying a nut 23 and a wire 24.
nection between the terminal carrying the mem
The wire 24 may be grounded, or it may be
ber and the central terminal. The magnet may
be carried by means making it possible to shift
the position of the magnet in order to be able to
connected to a circuit or a part of a circuit which
is to be electrically connected with any one of
the terminals :2.
energize or ' deenergize any one of the several
The electrical ‘connection between the central
terminal l9 and a selected terminal I2 is estab
The invention will appear more clearly from
lished by the use of a permanent magnet 25 which
the following detailed description when taken in 35 attracts the swingable plate l8 of the selected
connection with the accompanying drawing
terminal l2 and thereby raises it to a position
swingable members.
showing, by way ‘of example only, a preferred
, embodiment of the inventive idea.
In the drawing:
shown in broken lines in Figure 2; in this raised
position the plate I 8 engages the disc 26 and thus
provides an electrical connection between the
Figure l is a top view, with a part of the cover 40 central terminal [9 and the selected terminal £2.
removed, of a switch constructed in accordance
with the principles of the present invention.
Figure 2 is a section along the line 2-2 of Fig
The magnet 25 ?ts into recesses 26 provided in
the upper surface 2'! of the cover’t and situated
directly above the compartments II and the
ure 1.
swinging plates I8 which are located therein.
Figure 3 is a section along the line 3-3 of Fig 45 The recesses 28 may be designated by suitable
ure 1.
indicia 28 by means of which the various termi
Figure 4 is a perspective view of a swingable
nals l2 may be distinguished one from the other;
The magnet 25 is carried by a rod 2-9, the up
The switch shown in the drawing is situated
per end of which is connected wtih a manually
in a round insulating box 5 closed by an insulat 50 operated disc or button 30. The rod 29 extends
ing disc or cover 6 which is ?rmly attached to the
through a sleeve 3! constituting a part of an arm
box 5 by screws 7. Partitions 3 extend radially ’ 22. A coiled spring 33 encloses the rod 29 and is .
within the box 5 and are ?rmly connected to its
situated in a recess 34 provided in the sleeve 3|.
bottom 9 and side wall 10. The partitions 8 sepa
One end of the spring 33 engages the disc 30
rate the interior of the box into compartments 55 while the other end presses against the bottom of
The partitions ii and the location of the mag
the recess 34. The lower surface of the arm 32
has a recess 35 into which the magnet ?ts and
the spring 33 tends to move the magnet 25 into
the recess 35 (Figure
However, the rod 29 is locked in a downward
position, in which the magnet 25 is situated in
one of the recesses 26, by a locking member 36
into a recess 3'! provided in the rod 2;’).
net 25 in a recess
member 36 to recede into the passage 39. Then
the magnet 25 is raised and moved into the re
cess 25 of the arm 32 by the 1 ' lg 33. The arm
32 may be conveniently move . over the surface 2‘!
oi the cover 6, since the attractive force of the
The locking member 35 is pressed against tie
rod 29 by a spring 36 situated in a passage 39
which is formed in the sleeve 3! and which is
closed by a screw 40.
magnet is insuflicient to actuate the plates [8
while the magnet 25 is located in its upper posi
32 of
hasa pointer
an outer
end 4!over
the sur
tion in the recess 35 of the arm 32.
It is apparent that the switch shown above
has been given by way of illustration and not by
way of limitation and that it is capable of many
‘variations and modi?cations without exceeding
the scope or the extent of the present invention.
All of such variations and modi?cations are to
be included within the scope of the present inven
What is claimed is:
In a switch, in combination, an insulating hol
face 21 and adapted to be placed opposite any
one of the indicia 2B.
The indicia 28 are so lo
cated that in these positions of the pointer ill,
the recess 35 and the magnet 25 are located di
rectly above a recess 26.
The inner end of the arm 32 has the form of
a sleeve 42 whichis mounted upon a pivot 43.
The pivot 43 is ?rmly mounted in the cover 6
of the casing.
The switch is operated as follows:
Let it be assumed that an operator desires to
low casing, radially extending partitions situated
within said casing and dividing the interior there
of into a plurality of segment-like compartments,
terminals located within said compartments close
to the outer walls thereof, comparatively wide
use the switch for the purpose of providingr an
electrical connection between that termina1 :2
which is designated by the numeral “4” in Fig‘
ure 1, and the central terminal l9. Then the
plate-like magnetizable conducting members lo
until the turns
the 4|
by arm
is situated
the knob di
rectly opposite the numeral “4.” In this posi—
tion the magnet 25 which is held in the recess 35
of the arm 32 by the spring 33, will be located
directly above a recess 26.
are such that only one plate
16 situated directly below the magnet is influ
enced by it.
In order to disengage the switch, the operator
pulls the knob 39 upwardly, causing the locking
cated within said compartments, said terminals
comprising means pivotally supporting the outer
plate-like members at a distance
from the bottom of said compartments, whereby
35 said plate-like members are downwardly inclined
Then the operator inserts the magnet 25 into
in the direction toward the common center of said
‘ that recess 26 by depressing the knob 30 and the
arm 29 connected therewith. The recess 3i’ of
compartments in the inoperative positions of said
plate-like members, a central terminal carried by
said casing substantially in the middle thereof
39 inarm
the 29course
will ?nd
of the
of 40 and extending above the inner ends of said plate
like members, an insulating cover mounted upon
the arm 29, and then the locking member 36 will
said casing and having a plurality of radial re
be pressed into the recess 31 by the spring 38.
Thus the arm 29 will be locked in its depressed
position in which the magnet 25 is located in the
recess 26.
cesses formed therein, said recesses being nar
rower than said plate-like members and being lo
45 cated directly above them, a permanent magnet
The plate l8 of the terminal l2 will be placed
then in the magnetic field of the magnet 25, so
that it will become magnetized and will swing
from the position shown by full lines in Figure 2
to the position shown by broken lines ther in. In 50
the magnetized
with the disc
23, so
ani Selectrical
nection is established between the wire 24, the
terminal IS, the disc 20, the plate I8 and the
terminal I2.
?tting into said recesses, an arm mounted upon
said cover and rotatable over said recesses, and
means carried by said arm and carrying said
magnet for moving said magnet into and out of
any of said recesses, whereby said magnet may
raise the inner end of any plate~lilze member 10
oat-ed below it into engagement with said central
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