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‘Oct. 8, 1946.
c. E. FREESE
2,409,032
OPERATING MECHANISM‘
Filed Oct. 13, 1945
.73
by
Ihve‘mtorf:
Ch aw?es E. Freese,
WW
‘a? 1%
His Attorney
2,409,032
Patented Oct. 8, 1946
‘UNITED STATES PATENT OFFICE
2,409,032
OPERATING MECHANISM
Charles E. Freese, Scotia, N.'Y., assignor‘to Gen
eral Electric Company, a corporation of New
York
Application October 13, 1943, Serial No. 506,053
13 Claims. (Cl. 200-87)
2
1
My invention relates to improvements in op
erating mechanisms and especially operating
mechanisms for actuating a member mounted
for reciprocating rectilinear movement, and
more particularly to electrically controlled and
actuated operating mechanisms for electric
switches.
It is frequently desirable in electric switches
direction is accomplished by a complete move
ment of the actuator in one direction and the
remainder of the movement of the member in
said one direction by the complete reverse move
ment of the actuator. Further in accordance
with my invention, the actuator is in effect the
armature of an electromagnet which, when ener
gized to move to the attracted position, effects
a part of the movement of the member and stores
to have a member movable back and forth in a
straight line to actuate a movable circuit con 10 su?icient energy in a suitable element, such as
trolling member such, for ‘example, as a bridging
contact. With such structure, there are two
main conditions to be satis?ed. One is to main
tain the switch 'in the closed circuit position,
especially against the magnetic loop expansion
effect, and also to maintain the switch in the
open circuit position against the effects of
gravity, shocks and the like. The other is to
operate the switch by relatively simple electro
magnetic means which does not have to be con- ~
tinuously energized to maintain the switch in
either of its open or its closed circuit positions.
An object of my invention is to provide an
a spring, for eifecting the return movement of
the armature and the remainder of the move
ment of the member. Again in accordance with
my invention, I provide connecting means be
tween the member and the actuator such as to
maintain the member in either of its extreme
positions without maintenance of the energiza
tion of the actuating means.
My invention will be better understood from
the following description when considered in
connection with the accompanying drawing, and
its scope will be pointed out in the appended
claims.
a
In the accompanying drawing, Fig. '1 illustrates
rectilinearly movable member can be actuated to
and positively maintained'in either of two con
an ‘operating mechanism embodying my inven
tion as applied to the operation of a bridging
contact type of electric switch with the switch
shown in ‘the closed position; ‘Fig. 2 is a view
improved
operating
mechanism
whereby
trolling positions. Another object of my inven
tion is to provide an electromagnetically actuated
operating mechanism for actuating a ‘rectilin
early movable member to either of two con
similar to Fig. 1, with the parts in the positions
they occupy when the switch is partly open;
and Fig. 3 is a view similar to Fig. 1 showing the
switch in the full open circuit position.
In the operating mechanism shown for the
purpose of illustrating my invention, a member
trolling positions and ‘maintaining the member
in either of said positions independently of the
energization of the mechanism. A further ob
ject of my invention is to provide a relatively
simple ‘and economical electromagnetically op 35 5 and an actuator 6 therefor are respectively
mounted for reciprocating rectilinear movement
erated mechanism for a re'ctilinearly movable
of predetermined extents in directions having
'member wherein movement of an armature to
a predetermined angular relation, 90° as shown.
the attracted position e?ects a part of the move
For smooth movement with a minimum‘ of fric
ment of the member from one control position
tion, the member 5 is mounted between suitable
to another and stores energy for effecting the
means such as rollers 1, which are suitably piv
remainder of the movement of the member upon
otally supported at 8 on a flat plate or the like,
movement of the armature to its normal unat
the face of which may be considered to be in the
tracted position. These and other objects of
plane of the drawing. Similarly, the actuator
my invention will appear in more detail herein
6 is guided between rollers 9, suitably pivotally
after.
supported at Ill, and through an aperture in an
In accordance with my invention, I provide an
outstanding ?ange or shelf Ii. ‘ For electric
operating mechanism in which a member
switch operation, the ‘member 5 is provided with
mounted for reciprocating rectilinear movement
an extension [2 of suitable insulating material
of a predetermined extent is actuated between
two controlling positions by an actuator
to which is attached a bridging contact l3 so
mounted as to move into and out of engagement
mounted for reciprocating rectilinear movement
with spaced stationary terminal contacts M,
in a direction at a predetermined angle to the
which, as shown, are mounted on suitably sup
direction of movement of the member. Also in
ported insulators IS. The bridging contact I3
accordance with my invention, a part of the pre
determined movement of the member in one 55 is preferably. somewhat loosely mounted on the
2,409,032
3
4
member 5 so as to allow for manufacturing
facturing tolerances can also be alleviated to
some extent by having a slight lost motion be
tween the pin l1 and the link IE, but ordinarily
the torque of the spring 21 is suflicient for en
suring a past center movement.
For controlling the energization of the electro
magnetic means, I provide a circuit energized
tolerances in alignment.
In accordance with my invention, I provide
means for effecting a part of the movement of
the member 5 in either direction, that is, right
or left as viewed in the drawing, upon a com
plete downward movement of the actuator 6
and the remainder of the movement of the mem
ber 5 upon a complete upward or reverse move
ment of the actuator 6. As shown, this means
comprises a link I6 which is pivotally connected
at IT to the actuator 6 and at 18 to the member
5.
For convenience in structure, the pivot I8
is mounted on an arm l9 rigidly secured to the
member 5 although, as far as my invention is
concerned, the pivot 18 can be directly on the
member itself. For maintaining. the member 5
in either of its extreme positions, the link I6 is
arranged to lie on opposite sides of the actuator
6 and, in order to provide the maximum holding
effect, preferably substantially parallel to the
member, as shown in Figs. 1 and 3.
For moving the actuator 6 downward or effect
mg what I shall term the forward action of the
actuator, I
provide suitable electromagnetic
means shown as comprising an energizing wind
ing 120 and a plunger armature 2|, which is suit
ably connected as by a pivot 22 to the actuator 6.
from a suitable source, not shown, and compris
ing conductors, 3'13, 3| and 32. In accordance
with my invention, this circuit is arranged to be
controlled by a control switch 33 and two limit
switches 34 and 35 whose operation, as shown, is
controlled by the movement of the member 5.
Thus, as shown, the limit switches 34 and 35 are
biased to the open circuit position and are of the
cam and rider type, suitable camming means 34'
and
being provided on the insulating mem
ber i2. Preferably, the camming means 34’ is
such that in the closed position of the bridging
contact iii the limit switch 34 is closed and re
mains closed until just prior to the completion
of the downward stroke of the actuator ii in order
to reduce the shock of the armature closing
movement. When the switch 34 opens it remains
open until the ?nal half of the return or closing
movement of the member 5. Similarly, the cam
ming means 35' is such that the limit switch 35
is open when the bridging contact [3 is in the
closed circuit position and remains open until
For eifecting the upward or reverse movement
of the actuator 6, I provide means such as a 30 the member 5 has been moved to its intermediate
spring 23 in which energy is stored during the
movement of the armature 2i to the attracted
position.
position, whereupon the switch 35 is closed and
remains closed after the member 5 has been re
tracted to the ?nal switch open position, as shown
in Fig. 3.
Considering now the forward movement of the
armature, that is, downward to the attracted po 35
Assuming the parts positioned as shown in Fig.
sition, it will be observed that at the end of this
l and that it is desired to move the bridging con
movement the link I6 is in alignment with the
tact I3 to the open circuit position, then the con
actuator 6, as shown in Fig. 2. Since this is in
trol switch 33 is moved from the closing position C,
effect a dead center position, the spring 23 might
shown in Fig. 1, to the opening position 0, shown
not be able to expend its stored energy upon the 40 in Figs. 2 and 3. Thereupon, as will ‘be apparent
deenergization of the winding 20 if the inertia
from Fig. l, the circuit of the energizing winding
of the moving parts did not carry the pin l8 past
‘20 is completed as follows: conductor 3i, wind
dead center. In order to avoid any such possi
ing 20, conductor 32, control switch 33, conductor
bility, I provide means for moving the link It past
36, contacts 31 of the limit switch 34, and con
its alignment with the actuator B, that is, through
doctor 30. The plunger armature 2i is then
the dead center position. As shown, this means
actuated to the attracted position shown in Fig. 2.
comprises a strut 24 which is loosely supported in
During this forward movement of the plunger
the ?ange ll so as to have a limited angular
armature, the actuator ‘B is pulled downwardly
movement relatively thereto and which is pro
to produce counterclockwise movement of the
vided at its upper end with a guide yoke 25. The
link it‘ into the alignment position shown in Fig, 2
strut 24 is also provided with a projection 26
to effect substantially one-half of the movement
which bears against the actuator 5 to maintain
of the member 5 to the left, as Viewed in the
the strut substantially parallel to the plane of
drawing. During the downward movement of
the drawing. The yoke 25 carried on the upper
the actuator 6, the pin 28 on the link I6 is
end of the strut 24 is urged upwardly toward ' brought into engagement with the yoke 25 to
the link It by suitable means such as a helical
compress the spring 21 and de?ect the upper end
compression spring 21 around the strut 24 and
of the strut 24 to the right, as shown in Fig. 2.
between the flange l I and the yoke 25 so as to
This provides a relatively strong counterclockwise
engage one or the other of projections 28, 29
torque tending to continue the counterclockwise
mounted on the link upon rotation thereof about 60 turning of the link I6.
its pivot l1 respectively counterclockwise or
clockwise. When the member 5 is in either of
its extreme positions, the bearing yoke 25 does
‘not engage either of the projections 28 or 29,
but as the actuator 6 is moved downwardly the
pin 29 or 29 nearer the yoke 25 engages the yoke
to compress the energy storing means or spring
29 and also to cause a slight de?ection of the
strut in such a direction that the force of the
spring provides a torque tending to turn the
link 16 through the dead center position in the
desired direction of movement of the member 5.
This torque can be controlled, as desired, by
choosing the proper spring.
Any tendency to
Inasmuch as the limit switch 34 has opened just
prior to the alignment position, the armature 2|
is no longer maintained in the attracted position,
and consequently the actuator B is free to move
' upwardly to continue the counterclockwise move
ment of the link l6 and will be assisted in effect
ing this movement through the dead center posi
tion by the energy stored in the spring 21, Ac
cordingly, upon completion of the reverse move
ment of the actuator 5, the link IE will lie sub
stantially parallel to the member 5, as shown in
Fig. 3, so as to maintain the member 5 and the
parts carried thereby in the open circuit position
shown in Fig. 3. At the same time, the spring 21
stick in the dead center position due to manue 75 causes the strut 24 to assume its straight up and
5
6
down position since the points of the yoke 25 lie
of its movement upona complete reverse move
ment of the actuator.
4. An operating mechanism comprising a mem
"below the bottom of the pin 29 when the parts are
positioned as in'F-ig. 3 and also below the pin 28
‘when the parts are positioned as inFig. 1.
If it is desired to move the bridging contact l3
to the closed circuit position, the control switch
'33 is moved'to the closed position C to complete
the energizing circuit of the solenoid 20 through
ber and an actuator therefor respectively mount
ed for reciprocating rectilinear movement of pre
determined extents in directions having a pre
determined angular relation, and means for ef
footing a part of the movement of said member
in one direction of its movement upon a complete
conductor 38 and the contacts $9 of the limit
switch 35, which was moved to the closed position 10 forward movement of the actuator and the re
by the camming means 35’ at the beginning of
mainder of the movement of said member in said
one direction of its movement upon a complete
the upward movement of the actuator 6 where
reverse movement of the actuator including
it is maintained until a downward movement of
means for positively maintaining said member in
this actuator occurs. Upon closure of the con
trol switch 33 on the closing position, the winding
one of its extreme positions.
5. An operating mechanism comprising a mem
20 ‘is again energized to cause the downward
movement of the actuator 6. During this move
ber and an actuator therefor respectively mount
ment the link [6 is turned clockwise and the yoke
ed for reciprocating rectilinear movement of pre
25-engages the pin 29 to help throw the link past
determined extents in directions substantially
dead center so that the actuator 6 is free to com- '
perpendicular to each other, and means for ef
plete its up stroke upon the opening of the limit
fecting substantially one-half of the movement
switch 3'5, whereupon the link is moved into posi
of said member in either direction of its move
tion substantially parallel with the member 5,
ment upon a complete forward movement of the
as shown in Fig. 1, so as to maintain the bridging
actuator and substantially the other half of the
ember l3 in the closed circuit position.
movement of said member in the direction of the
From the foregoing, it will be observed that the
‘first half of the movement upon a complete re
electromagnetic means for effecting the opera
verse movement of the actuator including means
tion of the member 5 is energized only during the
for positively maintaining said member in each
initial part of the movement Of the member 5 in
of its extreme positions.
either of its circuit controlling movements. Also 30
6. An operating mechanism for electric
it will be observed that the member 5 is positively
switches comprising a contact operator and an
maintained in each of its extreme positions by
actuator therefor respectively mounted for re
virtue of the relative positioning of this member
and the link [6.
While I have shown and described my inven
tion in considerable detail, I do not desire to be
limited to the exact arrangements. shown, but
seek to cover in the appended claims all those
modi?cations that fall within the true spirit and
scope of my invention.
What I claim as new and desire to secure by
Letters Patent of the United States is:
_
1. An operating mechanism comprising a mem~
ber and an actuator therefor respectively mount
ed for reciprocating rectilinear movement of pre
ciprocating rectilinear movement of‘ predeter
mend extents in directions substantially perpen
dicular to each other, electromagnetically actu
ated means for effecting substantially one-half of
the movement of said contact operator in one
direction of its movement upon a complete for
ward movement of the actuator and substan
tially the other half of the movement of said con
tact operator in said one direction of its move
ment upon a complete reverse movement of the
actuator, and means controlled by said contact
operator for effectively deenergizing said electro
magnetically actuated means at an intermediate
determined extents in directions substantially
point of the movement of said contact operator.
perpendicular to each other, and means for ef
7. An operating mechanism comprising a mem
fecting substantially one-half of the movement‘
her and an actuator therefor respectively mount
of said memberv in either direction of its move
ed for reciprocating rectilinear movement of pre
ment upon a complete forward movement of the
determined extents in directions substantially
actuator and substantially the other half of the
perpendicular to each other, means for effecting
movement of said member in the direction of the
substantially one-half of the movement of said
first half of the movement upon a complete re
member in one direction of its movement upon a
verse movement of the actuator.
complete forward movement of the actuator and
2. An operating mechanism comprising a mem
substantially the other half of the movement of
ber and an actuator therefor respectively mount
said member in said one direction of its move
ed for reciprocating rectilinear movement of pre
ment upon a complete reverse movement of the
determined extents in directions having a pre
actuator, electromagnetic means for effecting the
determined angular relation, and means for ef
fecting a part of the movement of said member 60 forward movement of said actuator, and means
in which energy is stored during the forward
in one direction of its movement upon a prede
movement of the actuator for effecting the re
termined forward movement of the actuator and
verse movement thereof.
the remainder of the movement of said member
8. An operating mechanism comprising a, mem
in said one direction of its movement upon a pre
ber mounted for reciprocating rectilinear move
determined reverse movement of the actuator.
ment of a predetermined extent, electromagnetic
3. An operating mechanism comprising a mem
actuating means therefor comprising an arma
ber and an‘ actuator therefor respectively mount
ture mounted for reciprocating rectilinear move
ed for reciprocating rectilinear movement of pre
ment in a direction substantially perpendicular
determined extents in directions substantially
to the direction of movement of said member,
perpendicular to each other, and means for ef
means for effecting substantially one-half of the
fecting substantially one-half of the movement
movement of the member in one direction of its
of said member in one direction of its move
movement upon energization of said electromag
ment upon a complete forward movement of the
net and movement of its armature to the at
actuator and substantially the other half of the
tracted position, means for effecting the deener
movement of said member in said one direction
2,409,032
gization of the electromagnet substantially upon
tions into substantial alignment with the actu
the completion of the movement of the armature
to the attracted position, and means comprising
an element in which energy is stored during the
ator whereby to move the member a predeter
mined amount in a given direction, means for
movement of the armature to the attracted posi
tion for effecting the other half of the movement
for moving the actuator oppositely to said one
moving the link past said alignment, and means
direction to turn said link into the other of said
of said member in said one direction of its move
positions whereby to move the member farther
ment.
in said given direction.
9. An operating mechanism comprising a mem
12. An operating mechanism comprising a
ber and an actuator therefor respectively mount~ ll’) member and an actuator therefor respectively
ed for reciprocating rectilinear movement in di
mounted for rectilinear movement in directions
rections having a predetermined angular relation,
substantially perpendicular to each other, a link
a link pivotally connected to said member and to
pivotally connected to said member and to said
said actuator and arranged to lie in either of
actuator and arranged to lie in either of two
two positions respectively on opposite sides of the
positions respectively on opposite sides of the
actuator, means for moving the actuator in one
actuator, electromagnetic means for moving said
direction to turn said link from one of said posi
actuator in one direction to turn said link from
tions into substantial alignment with the actu
one of said positions into alignment with the
ator whereby to move the member a. predeter
actuator whereby to move the member a prede
mined amount in a given direction, means for
termined amount in a given direction, a circuit
moving the link past said alignment, and means
for controlling the energization of said electro
for moving the actuator oppositely to said one
magnetic means, means responsive to said prede
direction to turn said link into the other of said
termined movement of the member for opening
positions whereby to move the member farther
said circuit, means in which energy is stored dur
in said given direction.
ing the movement of the actuator in said one
10. An operating mechanism comprising a
direction for moving the link past said alignment,
member and an actuator therefor respectively
and means in which energy is stored during the
mounted for rectilinear movement in directions
movement of the actuator in said one direction
substantially perpendicular to each other, a link
for moving the actuator in the opposite direction
pivotally connected to said member and to said 30 to turn said link into the other of said positions
actuator and arranged to lie in either of two
whereby to move the member farther in said
positions respectively on opposite sides of the
given direction.
actuator, electromagnetic means for moving said
13. An operating mechanism comprising a
actuator in one direction to turn said link from
member and an actuator therefor respectively
one of said positions into alignment with the 35 mounted for rectilinear movement in directions
actuator whereby to move the member a prede
substantially perpendicular to each other, a link
termined amount in a given direction, means in
pivotally connected to said member and to said
which energy is stored during movement of the
actuator and arranged to lie in either of two
actuator in said one direction for moving the
positions respectively on opposite sides of the
link past said alignment, and means in which
actuator, electromagnetic means effective when
energy is stored during movement of the actuator
energized to move said actuator in one direction
in said one direction for effecting movement
to turn said link from one of said positions into
thereof in the opposite direction to turn said link
alignment with the actuator whereby to move
into the other of said positions whereby to move
the member a predetermined amount in a given
the member farther in said given direction.
Li direction, means dependent upon said predeter
11. An operating mechanism comprising a
mined movement of the member for e?ecting the
member and an actuator therefor respectively
deenergization of said electromagnetic means,
mounted for rectilinear movement in directions
means for moving the link past said alignment,
substantially perpendicular to each other, a link
and means operative upon deenergization of said
pivotally connected to said member and to said
electromagnetic means for moving the actuator
actuator and arranged to lie in either of two
oppositely to said one direction to turn said link
positions respectively on opposite sides of the
into the other of said positions whereby to move
actuator, means for moving said actuator in one
the member farther in said given direction.
direction to turn said link from one of said posi
CHARLES E. FREESE.
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