close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2411730

код для вставки
Nov. 26, 1.946.
2,41 1,730
O. A. HUNTSMA>N
ELECTRIC SWITCH
Filed Aug. 29, 1944
m
i?
4 Sheets-Sheet l
Inven to‘:
Orlando A. Huntsman ,
b
H
7v’
620%“
i'flz/ityAbtor-neg.
NOV- 25, 1946-
0. A. HUNTSMAN
'
_
ELECTRIC
SWITCH
Filled Aug. 29, 1944
7
V
1/
’
/” :0 6
I
/
_Y
~~_~i-i;;~
M
-
-
-
J
j
if‘
11
-
2,411,730
‘u:
4 Sheets-Sheet 2’
'
_
rmwT?mL'm-umi'iu-NHL:
if
Y‘
577 Z
a!
46
. 86
4:
47
I7
t' w‘.
. )1‘ 43'
U40
6/3
'
_____________ __
//
-_
_
10
i
.95 9
7 F121).
Inventor:
Orlohdo A. H un’osman,l
His Atto‘rheg.
Nov. 26, 1946.
O.A.HUNTSMAN
2,411,730
ELECTRIC SWITCH
Filed Aug. 29, 1944
~
''
4 Sheets-Sheet 3
Inventor- :
Or-l-ondo AHuhtsrnan,
' by 17"
His Attorney.
NOV- 26,1946-
o. A. HUNTSMAN
2,411,730
ELECTRIC SWITCH
Filed Aug. 29, 1944
1
gm. %
wQm.
\vAOIa LuW110
vm
gm.
4 Sheets-Sheet 4
akN bRk?
Invent/or
Orlondo A. Huntsman,
His Attornefg.
Patented Nov. 26, 1946
2,411,130
UNITED STATES PATENT OFFICE
2,411,730
ELECTRIC SWITCH
Orlondo A. Huntsman, Arlington, Va., assignor to
General Electric Company, a corporation of
New York
Application August 29, 1944, Serial No. 551,645
23 Claims.
(Cl. 209-5)
1
2
My invention relates to improvements in elec
tric switches and more particularly to improve
ments in multistage, multiposition control and in
ject of my invention is so to interlock the with
drawable parts as to avoid hazard to personnel
and apparatus and false circuit controlling op
erations. A still further object of my invention
strument switches.
is to provide an improved control and instrument
For so-called control and instrument switching
switch with a simple yet positive actuating means
purposes, the variation in the number of circuits
and switching sequences is such that economic
which is easy to operate and by which a quick
reasons dictate a switch structure of such adapta
make and break of the contacts is assured inde
bility as to be usable for any probable circuit com
pendently of the control of the operator. These
bination and sequence and yet so simple as to be 10 and other objects of my invention will appear in
capable of ready assembly from a relatively small
more detail hereinafter.
In accordance with my invention, I provide an
number of parts. Moreover, to be in keeping with
electric switch comprising a relatively stationary
the trend of the times, the switch should be adapt
terminal mounting structure on which is sup
able to ?ush mounting with certain vital parts
of the switch structure readily removable from 15 ported, for movement from one end of the struc
ture to a predetermined operating position there
the front of the switchboard and other vital parts
removable from the back for inspection, main
on, a contact mounting structure. On this con
tact structure, I mount rela.ively stationary
tenance, renewals, and operational changes with
spaced contacts for conductive register with the
out hazard to apparatus or personnel in conse
quence of failure of the human element involved. 20 terminals on the terminal structure when the
contact structure is in its predetermined position
Also, it is important from the standpoint of space
on the terminal structure. On the contact struc
economy that the switch structure be compact
ture are mounted cooperating movable contacts
even when a large number of circuits is involved.
for respective engagement with the stationary
Inasmuch as multistage, multiposition control
contacts and means adapted to be operated to ac
and instrument switches are more usually man
tuate the movable contacts. Also in accordance
ually operated, the structure should be such as
with my invention, I provide a second contact
to require the minimum of physical effort not
mounting structure which is supported for move
only for circuit controlling operations but also
ment from the other end of the terminal mount
withdrawal and insertion of the removable or
ing structure to a predetermined operating posi
drawout parts of the switch structure. Further
tion thereon. This second contact structure is
more, in order to minimize contact damage, cir
cuit closing and opening operations should be ac
complished with contact closing and opening in
dependent of the control of the operator.
An object of my invention is to pwcvide an
improved switch which can be readily assembled
into a compact structure from a relatively few
different parts to provide a wide variety of switch
ing combinations and sequences. Another object
of my invention is to provide an improved multi
stage, multiposition control and instrument switch
which is particularly adapted for ?ush mounting
with certain vital parts of the switch structure
readily and easily inserted and Withdrawn from
supplied with relatively stationary and cooperat
ing movable contacts in a manner similar to the
?rst contact mounting structure. Further in ac
cordance with my invention, the two contact sup
porting structures are respectively removable
from opposite ends of the terminal structure, but
these two contact structures are so interlocked
that when either is removed the other cannot be
40 removed and neither can be removed until the
cooperating contacts on the other or both are in
predetermined positions. Still further in accord
ance with my invention, I provide a sectionalized
switch structure which can be assembled from a
the front of the switchboard or mounting panel 45 relatively few component parts to provide an un
limited number of switching stages and a wide
without danger to personnel and apparatus and
also without risk of false circuit controlling op
range of contact operations for each stage. Again
erations. Still another object of my invention is
in accordance with my invention, I provide a pos
to provide an improved control and instrument
switch with a structural part of the switch with
drawable from the back of the switchboard and
arranged to control circuits which must be left
in a predetermined condition when the part of
the switch, which is withdrawable from the front
of the switchboard, is removed. A further ob
itive contact operating means wherein the re
quired operating effort is dependent only on the
number of contacts which have to be operated
at any one time and not on the total number of
contacts in the switch, and wherein a, positive
quick make and break is assured independently
55 of the operator.
'
3
My invention will be better understood from
the following description when considered in con
nection with the accompanying four sheets of
drawings, and its scope will be pointed out in the
appended claims.
In the accompanying four sheets of drawings,
Fig. 1 is a vertical longitudinal sectional elevation
of a multistage, multiposition switch embodying
5
ated sections of the supporting structure 1. The
terminals 55 are made of suitable resilient elec
tric current conducting material, examples of
which are well known to the art.
The front drawout multistage contact struc
ture 2 comprises a rear contact carrying section
I9, one or more intermediate contact carrying
sections or barriers 2i} and a front contact car
my invention; Fig. 2 is a horizontal longitudinal
rying section 2!. Also, as shown, the rear draw
sectional view on the line 2-2 of Fig. 1; Fig. 3 is 10 out contact structure 3 is single stage and com
a part sectional view similar to Fig. 2,.showing
prises only a rear contact mounting section 22
the interlocks and coupling between the two re
and a front contact mounting section 23. Ob~
movable contact structures with one of these
viously, for multistage purposes, the rear draw
structures partially withdrawn; Fig. 4 is an ele
out structure may include intermediate contact
vation on the line £i—d of Fig. 1; Fig. 5 is an
mounting sections like the sections 23 of the
exploded perspective of the rear withdrawable
front drawout structure 2. As illustrated, the
contact structure; Fig. 6 is an exploded perspec
sections i9, 29, 2E, 22 and 23 are of suitable in
tive of the front end of the front Withdrawable
sulating material, preferably molded, in a gen
contact structure with some parts omitted; Fig.
erally rectangular outline shaped to conform
7 is a diagrammatic View in one plane of the 20 with the openings in the sections
5, 5, l and 8
contact mechanism as positioned for withdrawal
of the stationary supporting structure l.
of the front contact structure; Fig. 8 is a circuit
For circuit controlling purposes, suitable rela—
diagram illustrating an application of the em
tively stationary contacts 2% are mounted in pairs
bodiment of my invention chosen for illustration
at the top and bottom of and between adjacent
thereof; Fig. 9 is a partial perspective of a ter 25 contact carrying sections “Lib, 2?—2ii and
minal supporting spacer section or barrier; and
211-2! of the front drawout structure 2 and the
Fig. 10 is a perspective of a part of a key inter
contact carrying sections 22-23 of the rear
lock mechanism.
I .
drawout structure 3. For this purpose, the con—
For the purpose of describing my invention, I
tacts 218 may, for example, be mounted on suit
have shown an embodiment thereof in a multi~
able resilient conducting elements 25 which are
stage multiposition control switch comprising a
set in registering recesses 26 in the opposing
supporting structure i on which two other struc
faces of the adjacent sections in question. For
tures 2 and 3 are supported for movement to
conductive registry with the terminals l5 when
ward each other from the opposite ends respec
the drawout structures 2 and 3 are in the fuily
tively of the supporting structure to predeter 35 inserted position, each of the contact supporting
mined positions thereon as shown in Figs. 1 and
elements 25 is provided with a suitable contact
2. In other words, the structures 2 and 3 are
ing portion 27 so shaped as to provide a good
insertable in the structure i from the opposite
fulcruming action on and good conducting en
ends thereof to an operating position from which
gagement with the edges Id of the terminals I5.
they can be withdrawn but only under predeter 40 The corners of the terminal edges l8 are suitably
mined conditions, as will hereinafter appear.
?nished as by slightly rounding them, for exam
For diversity of application and also economic
ple, so that during insertion or withdrawal a
reasons, the structures I, 2 and S are preferably
smooth engaging action is possible. For hold
sectionalized, as shown. Thus, for example, the
ing the contacts 24 in contact engaging position
multistage supporting structure i includes a base
and the bearing portion 27 of each supporting
or front section Ll, one or more intermediate sec
tions 5, a front spacer section 6, a rear spacer
section ‘I and a rear section 8. For purposes of
alignment and rigidity, these sections are pro
vided with interlocking bosses 9 and recesses It
and the sections are fastened together in a uni
tary assembly by suitable means, such as bolts
ll passing through holes 52 in the sections and
threaded into the base section 4, as shown in
Fig. 2. Also, as shown in Fig. 2, this supporting
structure assembly is mounted on a panel or
element 25 in good conductive relationship with
its respectively associated terminal edge, I pro—
vide suitable means such as a compression spring
28 seated in the registering recesses 26 between
a wall of the recessed portion and the tail of the
element, as shown more clearly in Fig. 4.
For bridging the upper and lower pairs of con
tacts 241, I provide movable contacts 29 and 30,
respectively. Longer contact life and less move
ment of the contact is obtained by making these
contacts in the form of star wheels with four
switchboard structure l3 by suitable fastening
arms spaced 90°, as shown. For some applica
tions, as will be obvious to those skilled in the
trated, the sections d, 5, ii, i and 8 are of suitable
art, the bridging contacts 29 and 35 may have a
insulating material, preferably molded, in a gen 60 di?erent number of arms, such as two or six vfor
erally rectangular outline. Also they are pro
example. The ends of these arms may be tipped
vided with generally rectangular central open
with silver, silver plated or otherwise modi?ed
ings for admitting the movable or drawout
to insure good conductivity and satisfactory in
structures 2 and 3.
terrupting performance. Each of the movable
For circuit controlling purposes, suitable ter 65 contacts 29 and 383 is supported by a shaft 35.
minals l5 are mounted in pairs at the top and
These shafts are rotatably mounted in suitably
bottom of and between adjacent sections 4—5,
bossed openings 32 in opposing faces of adjacent
5—~5, 5—5 and 'l—8 of the stationary supporting
contact carrying sections, as shown more clearly
in Fig. 1.
structure I in registering recesses I6 of these
sections, as shown in Figs. 4 and 6, so as to be 70
For rotating the bridging contacts 29 and 30,
rigidly secured in position when the sections are
I provide a positive intermittent driving mech
means, such as countersunk screws l4. As illus
clamped together by the bolts H. Each of the
terminals [5 is provided with a clip I‘! and also
with a contact engaging edge is extending into
the central openings in the respectively associ 75
anism such that the torque required for opera
tion is dependent on the number of contacts that
have to be operated at any one time and not on
the total number of contacts in the switch. The
2,411,730
57:
‘intermittent mechanism chosen to illustrate my
invention is of the Geneva type and comprises
for each stage two drive gears 33 and 34 which
are respectively operativeiy associated with upper
and lower contact gears 35 and 35. For simplicity
and economy, these contact gears are prefer
ably made of suitable insulating material which,
6
key Hi3 having, as shown in Fig. 10, a square shaft
portion I94 to which the handle 119 can be suit
ably secured. This key Hi3 has a head portion
H35 which fits into a recess let‘ in a base sec
tion 53. In order that the key H33 may be in
serted or withdrawn only when the switch is in
predetermined positions and for changing the
combination, I provide in the recessed portion
as shown, is shaped to include the shaft portions
it's‘ of the base section
one or more headed
3|, an alignment spacing boss portion 3i and a
square hub portion 38 for positioning the star 10 pins it? which permit entry and withdrawal of
the key only when notches i623 therein register
Wheel contacts to turn with their respectively as
with the heads of the ins 16''’. By varying the
sociated contact gears. For yieldingly maintain
angular spacing of the pins and the notches, dif
ing the star wheel contacts 29 and 3t in position
ferent keying combinations are obtained. The
on the square hub portion 33 and against the
boss portion 3? of their respective gears, I provide 15 head portion of the key W3 is recessed at I99 to
receive an o erating stub shaft 56. This is rig
idly secured to an operating element 5| which
has a hub portion 52 rotatably positioned in the
base section
of the drawout structure 2. Big
of adjacent contact carrying sections on a square 20 idly secured to the front end of the shaft ‘ii! is
a coupling element 54 which has a cylindrical
shaft 40 so as to turn therewith. As shown, this
suitable resilient means such as dished spring
washers 39.
‘The drive gears 33 and 34’. of the front drawout
structure 2 are mounted between opposing faces
shaft passes through suitably bossed openings 4!
in the contact carrying sections 49 and 20 large
bearing portion
rotatably positioned in a suit
ably shaped retainer and bearing plate 5%. The
enough to permit free rotation of the shaft and
through openings 152 in the drive gears 33 and 3d
so shaped that these gears can be assembled on
front end of the coupling element 5a is notched
to provide guides bl, as shown in Fig. 6, between
the opposed edges of which a trigger member
the shaft '40 in different angular positions rela
tively to their tooth pro?les. The drive gears 33
235 is slidably mounted. The trigger member 58
is provided with notched ?anges 553 conforming
to and slidable in the notched guides 5'! of the
and 34 of the rear drawout structure 3 are sim
ilarly mounted on a square shaft 43 which passes 30 coupling t-‘i so as to permit linear movement of
through suitably bossed openings Ml and 45 in
the contact carrying sections 23 and 22, respec
tively. For greater strength and wear, the open
ing 45 may be provided with a suitable metallic
bushing 66. Bosses 41 on the drive gears 33 and
34 provide clearance space for the star wheel con
tacts 29 and 3E) and also serve to stiffen the gears
and to increase the shaft bearing area. By suit
the trigger member relatively to the coupling 54
also to insure simultaneous angular move
ment of both when the trigger member is turned.
It will be apparent to those skilled in the art that
if the removable handle feature is unnecessary
the stub shaft
may be continued clear through
and beyond the base section sufficiently to receive
the handle
directly.
For positioning the shaft 4%‘ to secure the de
able choice of the number of teeth on the contact
gears 35 and 35 and the pitch ratio of the con 40 sired circuit controlling arrangements, the trig
ger member 58 carries between its flanges 59 a
tact and drive gears, the number of circuit con
resilient member 69 which has two teeth 68'.
trolling operations per stage per shaft revolu
These are arranged to project through an open
tion can be materially varied within practical
ing 59' in the upper ?ange 59 so as to engage
limits. As shown, the contact gears have eight
teeth and the pitch ratio is 111/2. In other words,
the drive gears 33 and 34 may have a maximum
I notches
which are formed by two identically
notched positioning plates 82 and 62’ assembled
with their teeth in reverse order. The front plate
62 and the rear plate 52’ respectively have their
teeth arranged to hold the shaft to against clock
by increasing the ratio, more operations per 50 wise and counterclockwise rotations until the
handle 189 is turned sufficiently in one or the other
revolution can be obtained. Broadly speaking,
of these directions to release the teeth £59’ from
the drive gears 33 and as will be provided with
the notches ti. The positioning plates 52 and 6'2’
spaced teeth $8 in such numbers and at such in
are mounted between the retainer plate 56 and
tervals as to actuate the contact gears 35 and
The retainer plate 55, the position
36 and their associated contacts 29 and 3E! at de 55 the base
ing plates "52 an t2’, the base 53 and an escutch
sired intervals. It will be apparent that, since
eon 63 are secured together by any suitable means
no pressure appears between a contact gear and
such as bolts 64, In the inserted position, the
a drive gear except when operation of the star
drawout structure 2 is secured to the panel i3 by
wheel contact is desired, the effort required to
turn the shaft 40 is dependent only on the num Cl) suitable means such as screws 65.
For maintaining the trigger member 53 with
ber of star wheel contacts to be operated at any
its resilient teeth 6b’ in one of the notches 6|
one time.
.
of twelve teeth, thus providing twelve operations
of the star wheel contacts 29 and 38 of a stage
during one revolution of the shaft Mi. Obviously
_ For supporting the front end of the shaft 48
and so turning it as to insure at the rotating
formed by the positioning plates 62 and 52’ and
contacts 29 and 3D and the cooperating station
ary contacts 24 a quick make and break action
with which the operator cannot interfere, either
position to another free of the operator’s control,
deliberately or otherwise, I provide an energy
portion 6‘! of the operating element 5!. This
spring has two arms 68 which project under lugs
69 on the trigger member 58 and the spring is so
storing quick release mechanism, shown more
clearly in Figs. 1 and 6. As illustrated, this mech
anism comprises an operating handle 49 which,
as illustrated, is of the removable type so as to
provide interlocking between a plurality of
switches whereby only one switch can be oper
for effecting the turning of the shaft so from one
I provide energy storing means such as a tor
sional spring '56 which is mounted on the hub
stressed as to tend to maintain the trigger mem
ber 58 with its resilient teeth 68' in one of the
notches iii of the positioning plates 52 and 62'.
Before the shaft 48 can be turned, the trigger
ated at a time. .For this purpose, I provide a 75 member 58 must be moved linearly with respect
2,41 1,730
to the guide 57 to withdraw the teeth 69’ from
their registering notch 6!. For this purpose, the
operating element 5! is provided with two cam
like portions 70 which are on opposite sides of the
lugs 69 from the spring arms 98. Thus when the
handle 49 is turned su?iciently in either direc
tion, one of the earn-like pOI‘tiOns ‘ill engages one
8
which are arranged to engage the clamping bolts
ll under their heads to hold the rear drawout
structure in place.
Although the sections of the drawout struc
tures 2 and 3 are of such outline as to ?t snugly
and yet slidably within the sections of the sup‘
porting structure I, I provide further aligning
of the lugs 69 to release the teeth 69' on the trig
means in order to secure nicety of alignment and
ger member 58 from their registering notch 6|.
also to provide for indexing and interlocking and
At the same time, sufficient energy is stored in
to prevent error in assembly and in insertion of
the spring 86 to turn the shaft 49 quickly in the
the drawout structures. As shown, this means
same direction the handle was turned immediate
comprises a key 81 on an inner wall of each of
ly after the teeth 99' clear their registering notch
the supporting structure sections 4, 5, _6, 1 and 8
6|. When the spring 69 actuates the shaft 49
and a registering slot 88 in each of the drawout
in the direction the handle 49 Was turned, the 15 sections l9, 29, 2|, 22 and 23 and also the oper
spring 66 also effects linear movement of the trig
ating assembly plates 56 and 62 and the base 53.
ger member 58 in a direction to move the teeth
For
clearance of the terminal edges IS, the draw
60’ into the next notch thereby positioning the
out sections l 9, 29, 2i and 23 are suitably notched
shaft 48. During this movement, one of the
as shown at 89.
resilient teeth 50’ has to flex enough to permit it
For interlocking the drawout structures 2 and
to ride over the tooth in its respective positioning
3 so that only one can be removed at a time and
plate as the trigger moves linearly to force the
then only when both are in predetermined circuit
teeth 99' into the next notch (ii.
controlling positions, I provide on the rear cou
For controlling the number of positions to
pler
ll a lug 99 and on the front coupler 80 a
which the shaft d9 may be operated, I provide
?ange 9! which is notched at 92 to slide over
means for limiting the angular range of move
the keys 8?. Further, I provide notches 93 and
ment of the shaft. As shown in Fig. 6, this means
99 in the keys 8‘! on the spacers 6 and ‘i, re
comprises a stop arm ‘H on the operator 5|. This
spectively. Thus, the rear drawout structure 3
arm is arranged to engage stops such as the heads
of screws 72 which may be positioned as desired
in holes '33 in the positioning plates 62 and 62’.
As shown, these holes 13 are spaced between the
notches Si in a circle whose center is on the axis
of rotation of the shaft 49. For visually indicat
ing the position of the shaft 49, I provide, as
shown in Fig. 1, suitable means such as an indi
cator disk ‘it positioned on the key shaft I04 be
tween the hub 75 of the handle 49 and the base
section 53 and provided with a pointer portion 7'6
cannot be removed while the lug 99 on the rear
30 coupler ‘ll is positioned in the notch 93 of the
key 8? on the rear spacer ‘I, as shown in Fig. 3,
and the front drawout structure 2 can be re
moved only when the notch 92 in the ?ange 9|
registers with the key 87 on the front spacer
section 6.
In order to prevent rotation of the shafts 40
and 43 as one or the other of the drawout struc
tures 2 and 3 is withdrawn or inserted, I provide
which moves over suitable markings on the 40 suitable rotation preventing means which, for
the sake of simplicity, I have incorporated in
escutcheon 63.
the cushioning springs 8| and 82. As shown, this
In order simultaneously to rotate both the front
means includes on each of these springs BI and
drawout structure shaft 49 and the rear drawout
32 a resilient arm 95 which springs out, when
structure shaft 43 and yet permit the withdrawal
the pressure between the springs is released by
and insertion of only one of the drawout struc
withdrawal movement of either drawout struc
tures 2 or 3 at a time and then only when both
ture and while either drawout structure is in the
of the shafts lit and IE3 are in predetermined
drawout position, to straddle the key or keys 8‘!
circuit controlling positions, I provide suitable
in the diiferent sections and thereby to prevent
shaft coupling and interlocking means which, as
rotation of the shafts I30 and 43. Thus, as shown
shown in Figs. 1, 2, 3 and 5, is positioned in the
in Fig. 3, the front drawout structure has been
portion of the operating structure I de?ned by
partially withdrawn, but its operating shaft 40
the spacer sections 6 and ‘i. As shown, this
cannot be turned and the rear drawout structure
means comprises a rear coupler ll mounted on
is in position and blocked against linear move-'
the shaft 43 so as to rotate therewith and pro
ment by the lug 99 and key 81 on the spacer sec
vided with looking lugs 13 which project into
tion ‘i and cannot be rotated since the arm 95
recesses 79 in a ?anged front coupler 89 mounted
of the spring 82 straddles the adjacent portions
on the shaft £9 so as to turn therewith. The
of the keys 87 on the two spacer sections. Simi
lugs 78 and the recesses '59 are so spaced as to
larly, in order to withdraw the rear drawout
permit registry in only one way, thus. insuring
structure 3, the shafts 9i] and 43 must be turned
a coordinated relation between the relative posi
tions of the two shafts 99 and 1%. In order snug 60 until the lug 99 on the rear coupler 7'! does not
register with the aligned key 87 in the sections
ly to hold the parts which are slidable length
2?. and 23 of the supporting structure. In so do
wise on the shafts £39 and 93, I provide suitable
ing, the notch 92 in the ?ange 9| of the front
means such as cushioning springs 8i and 82 re
coupler 80 is turned out of registry with the
spectively mounted on the shafts 49 and 43 and
65 aligned keys 81 in the sections 4, 5 and 6 of the
retained thereon by pins 93. These springs are
supporting structure i. In other words, the front
conveniently mounted in a recessed portion 89 in
drawout structure 2 can be withdrawn only when
each coupler, as shown more clearly in Fig. 5.
each drawout structure is in a predetermined cir
For withdrawing the rear drawout structure 3 and
cuit controlling position, and the rear drawout
also holding it in the inserted position, I provide
structure 3 can be withdrawn in any position ex
a locking bar 85 which is rotatably mounted on
cept that corresponding to the drawout position
of
the front drawout structure 2 and the next‘in
tained in place thereon by suitable means shown
termediate position. Thus when the front draw
as a cotter pin 86. As shown, the bar 85 is pro
vided near its ends‘with reversed hook portions 75 out structure 2 is withdrawn, the rear drawout
structure 3 cannot be withdrawn or rotated. Also
the outer end of the rear shaft 93 and main
2,411,730
when the rear drawout structure 3 is withdrawn,
the front drawout structure 2 cannot be with
drawn, but it can be rotated to any position ex
cept the drawout position.
is
since the lug 99 on the rear coupler ‘fl is in the
notch 93 of the key Bl and abuts the key 81 on
the rear spacer section l’. If the front drawout
structure 2 is withdrawn, the by-pass stage can
not be operated to open the current transformer
circuit since the notch in the spring arm 95 of
Openings are provided between sections 4-5,
5-5, 5—6 and 1-8 for test and inspection of
the spring 82 straddles the adjacent portions of
the contacts. For some applications, the switch
the aligned keys 8'1 on the two spacer sections 6
may be constructed without these openings. In
and 1.
order to keep dust, dirt and other foreign arti
Assuming the two drawout structures 2 and 3
cles from entering the switch, particularly be 10
positioned
as shown in Figs. 1, 2 and 3 and that
tween the sections of the supporting structure I,
it is desired to connect the voltmeter 98 and the
a box-like cover may be used to enclose the part
ammeter 99 to the source B, the operating handle
of the switch back of the panel, as will be ap
139‘ is turned counterclockwise from the position D
parent to those skilled in the art. I have, how
ever, shown an enclosing arrangement embody 15 to the position I3. By this operation, the contacts
293, 2514 and
are turned to the closed position
ing two flat relatively thin mem ers such as
and
the
contacts
2% and 3% remain closed. The
slides 96 which are insertable in recesses 91 in
operating handle is then turned counterclockwise
the supporting structure sections it, 5, t, ‘i and 8.
from the position Is to the position 13. By this op
These slides may be of suitable insulating ma
eration, the contacts Edi and 2&2 are turned to the
terial, as illustrated in the drawings. In addi
closed position, the contacts 2&3, 235i and 3% re
tion to closing the open places, these slides also
main closed and the contacts 2% and 385 are
help to maintain the alignment of the support
turned to the open position. The structure 3 may
ing structure sections it, 5, 6, ‘l and 8.
be withdrawn in the B position because the lug
While switches embodying my invention can
510 has been turned clear of the key 8'5. If it is de
be assembled in almost innumerable ways to
sired
to connect the voltmeter and the ammeter
provide different circuit combinations and
to the source A, the operating handle lid is turned
switching sequences, I have shown, for the pur
counterclockwise to the intermediate position I2.
pose of illustrating my invention, a relatively sim
By this operation the contacts 2.)! and 292 are
ple switching arrangement for transferring a
turned to the open position, the contacts 2%, 294
voltmeter 98 and an ammeter as from one alter- '
and 8% remain in the closed position and the con
hating current source A to another alternating
tact
295 is moved to the closed position. The op
current source 13, as diagrammatically indicated
erating handle 139 is then turned counterclockwise
in Fig. 8. The sources A and B are respectively
to the position I1. By this operation, the contacts
provided with current transformers i551 and HM. - 2&3 and 2% are turned to the open position, the
For this switching arrangement, the illustrated
contacts 363 and set are turned to the closed posi
embodiment of my invention is shown as a six
tion, and the contacts 2% and
remain closed.
position switch having six main switching stages
Finally,
the
operating
handle
is
turned
counter
in the front drawout structure 2 and one by-pass
clockwise to the position A. By this operation,
switching stage in the rear drawout structure 3
the contacts 3i.“ and 362 are turned to the closed
used in the illustrated example to keep the cur 40 position, the contacts
335i and 295 remain
rent transformers its and Hit from becoming
closed and contact 335 is turned to the open posi
open circuited. The positions are in sequence
tion. This connects both the voltmeter and the
the voltmeter and the ammeter connected to
ammeter to the source A. From the foregoing, it
source A; intermediate positions I1 and Is; the
will be observed that at no time has either cur
voltmeter and the ammeter connected to source ‘
rent transformer been open circuited. Structure
2 can be withdrawn only in the D position, and
structure 3 can be withdrawn in any position ex
B; intermediate position 13 and position D, the
drawout position for the structure 2. The struc
ture 3 may be withdrawn in any position except
positions 13 and D. In Fig. 7, these are respec
tively indicated as they would be on the escutch
eon 63 by the letters A, I1, I2, 13, I3 and D, over
which operates the pointer ‘it on the stub shaft.
In Fig. l, the shafts Ail, a3, and 56 and the key
shaft H34- are indicated by a dash-dot line. Also,
for the sake of simplicity in illustration, I have
shown the two drive gears 33 and 134 of each stage
cept the position I3 and the position D.
In cases where a ?ner angular adjustment in
contact operation is desired than that afforded by
the hexagonally notched opening or bore £32 in
the main drive gears 33 and 312-, these gears may
be provided with a micrometer bushing variation
' arrangement similar to that disclosed, for ex
as a single gear 3B-—3!l carrying the teeth of both
drive gears of the stage. The movable contacts
ample, in United States Letters Patent 1,797,960,
dated March 24, 1931.
While I have shown and described my invention
in considerable detail, I do not desire to be limited
to the exact arrangement shown, but seek to cover
from the panel end of the switch as 29!, 292, (50 in the appended claims all those modi?cations that
7:93, 296, 285, and 2%, and 3st, 382, 55b3, 3M, 3135,
fall within the true spirit and scope of my invenand 3%. These same numbers are used to indi
tion.
cate the contacts in Fig. 8.
What I claim as new and desire to secure by
As shown in Fig. 7, all of the contacts in the
Letters
Patent of the United States is:
?ve main stages are open, but the contacts 256 C) U:
1. An electric switch comprising a relatively
and 396 in the single by-pass switching stage in
stationary supporting structure, a plurality of
the rear drawout structure 3 are closed. This is
spaced terminals mounted on said supporting
the drawout position for the front drawout struc
structure, a second structure supported by said
ture 2 and the position illustrated in Figs. 1, 2
supporting
structure and movable relatively there
and 3. In this position, as will be apparent from
to, relatively stationary spaced contacts mounted
Fig. 8, each of the current transformers its and
on said second structure for conductive register
I!!! is short circuited, and neither the voltmeter
with said terminals when said second structure is
nor the ammeter is connected to either of the
in a predetermined position relatively to said sup
sources A and B. In this drawout position, the
porting structure, cooperating movable contacts
29 and 3d are designated respectively by stages
rear drawout structure 3 cannot be withdrawn .
ll
2,411,730
mounted on said second structure for respective
engagement with said stationary contacts, and
means for actuating said movable contacts.
2. An electric switch comprising a relatively
stationary supporting structure, a plurality of
spaced terminals mounted on said supporting
structure, a second structure supported by said
supporting structure and movable relatively there
to, relatively stationary spaced contacts mounted
12
minals when the two movable structures are in
their respective predetermined positions, cooper
ating movable contacts mounted on said two
movable structures for respective engagement
with the stationary contacts thereon, and means
for actuating the movable contacts on said mov
able structures when both are in their respective
predetermined positions on the operating struc
ture.
on said second structure for conductive register 10
7. An electric switch comprising a ?rst struc~
with said terminals when said second structure is
ture having a longitudinal chamber, terminals
in a predetermined position relatively to said sup
mounted on said ?rst structure, a second struc
porting structure, cooperating movable contacts
ture
insertable in and withdrawable from said
mounted on said second structure for respective
engagement with said stationary contacts, means 15 chamber at one end thereof, a third structure
insertable in and withdrawable from said cham
for actuating said movable contacts, and means
ber at the other end thereof, relatively stationary
for preventing movement of said second struc
contacts mounted on said second and third struc
ture relatively to said supporting structure except
tures and respectively conductively engageable
when at least one of said movable contacts is in a
with said terminals when the second and third
predetermined circuit controlling position.
3. An electric switch comprising a ?rst struc 20 structures are fully inserted in said chamber,
movable contacts mounted on said second and
ture having a longitudinal chamber, terminals
third structures for respective engagement with
mounted on said ?rst structure, a second struc
the stationary contacts thereon, and means
adapted to be operated to actuate the movable
on said second structure and respectively conduc 25 contacts on said second and third structures.
8. An electric switch comprising a ?rst struc
tively engageable with said terminals when the
ture having a longitudinal chamber, terminals
second structure is fully inserted in said chamber,
mounted on said ?rst structure, a second struc
cooperating movable contacts mounted on said
ture insertable in and withdrawable from said
second structure for respective engagement with
said stationary contacts, and means for actuating 30 chamber at one end thereof, a third structure
insertable in and withdrawable from said cham
said movable contacts in a predetermined se—
ture insertable in and withdrawable from said
chamber, relatively stationary contacts mounted
quence.
4. An electric switch comprising a ?rst struc
ture having a longitudinal chamber, terminals
mounted on said ?rst structure, a second struc
ture insertable in and withdrawable from said
chamber, relatively stationary contacts mounted
on said second structure and respectively con»
ber at the other end thereof, relatively stationary
contacts mounted on said second and third struc
tures and respectively conductively engageable,
with said terminals when the second and third
structures are fully inserted in said chamber,
movable contacts mounted on said second and
third structures for respective engagement with
ductively engageable with said terminals when 40 the stationary contacts thereon, means adapted
to be operated to actuate the movable contacts
the second structure is fully inserted in said
on said second and third structures, and means
chamber, cooperating movable contacts mounted
on said second structure for respective engage
for preventing the withdrawal of one of said
ment with said stationary contacts, means for
actuating said movable contacts in a predeter
mined sequence, and means for preventing the
actuation'of said contacts during insertion and
withdrawal of said second structure.
5. A multistage multiposition electric switch
second and third structures after withdrawal of
the other is started.
9. An electric switch comprising a ?rst struc
ture having a longitudinal chamber, terminals
comprising a ?rst sectional structure having a I
mounted on said ?rst structure, a second struc
ture insertable in and withdrawable from said
chamber at one end thereof, a third structure
insertable in and withdrawable from said cham
longitudinal central chamber, a plurality of
spaced pairs of oppositely disposed terminals
ber at the other end thereof, relatively stationary
mounted on said ?rst structure, a second sectional
contacts mounted on said second and third struc
structure insertable in and withdrawable from
tures and respectively conductively engageable
said chamber as a unit, a plurality of spaced pairs .
with said terminals when the second and third
of oppositely disposed relatively stationary con
structures are fully inserted in said chamber,
tacts mounted on said second structure and re
movable contacts mounted on said second and
third structures for respective engagement with
the stationary contacts thereon, means adapted to
bev operated to actuate the movable contacts on
60 said second structure, means adapted to be oper
said chamber‘, a plurality of movable contacts
ated to actuate the contacts on said third struc
mounted on said second structure for respectively
spectively conductively engageable with prede
termined pairs of oppositely disposed terminals
when the second structure is fully inserted in
connecting said pairs of stationary contacts, and
ture, and means interconnecting said actuating
means for actuating said movable contacts in a
means for simultaneous operation.
10. An electric switch comprising a ?rst struc
6. An electric switch comprising a supporting
structure, a plurality of spaced terminals mounted
ture having a longitudinal chamber, terminals
predetermined sequence.
on said supporting structure, a structure mov
able on said supporting structure to a predeter
mined position thereon from one end thereof,
another structure movable on said supporting
structure to a predetermined position thereon
from the other end thereof, relatively stationary
spaced contacts mounted on said two movable
structures for conductive register with said ter
mounted on said ?rst structure, a second struc
ture insertable in and withdrawable from said
chamber at one end thereof, a third structure
insertable in and withdrawable from said cham
ber at the other end thereof, relatively stationary
contacts mounted on said second and third struc—
tures and respectively conductively engageable
with said terminals when the second and third
structures are fully inserted in said chamber,
movable Contacts mounted on said second and
2,411,730
‘
13
third structures for respective engagement with
the stationary contacts thereon, means adapted
to be operated to actuate the movable contacts on
said second and third structures, and means for
preventing the withdrawal of one of said second
and third structures unless a movable contact
of the other of said second and third structures
is in a predetermined position.
11. An electric switch comprising a relatively
stationary supporting structure, a plurality of
spaced terminals mounted on said supporting
structure, a structure movable on said support
ing structure to a predetermined position thereon
from one end thereof, another structure movable
on said supporting structure to a predetermined
position thereon from the other end thereof, rel
atively stationary spaced contacts mounted on
said two movable structures for conductive re
gister with said terminals when the two movable
structures are in their respective predetermined
positions, cooperating movable contacts mounted
on said two movable structures for respective
engagement with the stationary contacts thereon,
an actuator for the movable contacts of each of
said, movable structures, and means intercon
necting said actuators for common operation only
when each of said movable structures is in its re
spective predetermined position.
12. An electric switch comprising a relatively
stationary supporting structure, a plurality of
spaced terminals mounted on said supporting
structure, a structure movable on said supporting
structure to a predetermined position thereon
from one end thereof, another structure mov
able on said supporting structure to a predeter
mined position thereon from the other end there
of, relatively stationary spaced contacts mounted
on said two movable structures for conductive
register with said terminals when the two mov
able structures are in their respective predeter
mined positions, cooperating movable contacts
positions.
14. An electric switch comprising a relatively
stationary supporting structure, a plurality of
spaced terminals mounted on said supporting
‘ structure, a structure movable on said support—
ing structure to a predetermined position thereon
from one end thereof, another structure movable
on said supporting structure to a predetermined
position thereon from the other end thereof, rela
tively stationary spaced contacts mounted on said
two movable structures for conductive register
with said terminals when the two movable struc
tures are in their respective predetermined posi
tions, cooperating movable contacts mounted on
said two movable structures for respective en
gagement with the stationary contacts thereon,
means for actuating the movable contacts on said
movable structures, and interlocking means on
s id structures for preventing movement of either
of said movable structures from its predeter
mined position except when the movable con
tacts on the structure are in predetermined cir~
cuit controlling positions and all or the contacts
on the other structure are in predetermined cir
cuit controlling positions and for preventing
linear movement of the remaining structure while
the one structure is out of its predetermined posi—
tion.
I
15. An electric switch comprising a relatively
stationary supporting structure, a plurality of
spaced terminals mounted on said supporting
structure, a structure movable on said support
ing structure to a predetermined position there
on from one end thereof, another structure mov
able on said supporting structure to a predeter
mined position thereon from the other end there
of, relatively stationary spaced contacts mounted
on said two movable structures for conductive
register with said terminals when the two mov
able structures are in their respective predeter
mined positions, cooperating movable contacts
mounted on said two movable structures for re
mounted on said two movable structures for re
spective engagement with the stationary contacts
thereon, means for actuating the movable con
tacts on said movable structures, and means
14
structure are in predetermined circuit controlling
spective engagement with the stationary contacts
,~ thereon, means for actuating the movable con
tacts on said movable structures, and interlock
operative upon movement of one of said movable
ing means on said structures for preventing
movement of one of said movable structures from
structures from its respective predetermined posi
tion on said supporting struture while the other
its predetermined position except when all the
of said movable structures is in its predetermined
position for preventing movement of said other
movable structure and actuation of the movable
contacts thereon.
movable contacts on the structure are in the
open circuit position and all the movable con
tacts on the other structure are in the closed cir
cuit position and for preventing movement of the
13. An electric switch comprising a relatively
remaining structure and the movable contacts
stationary supporting structure, a plurality of
thereon while the one structure is out of its pre
55
spaced terminals mounted on said supporting
determined position.
structure, a structure movable on said supporting
16. An electric switch comprising a relatively
structure to a predetermined position thereon
from one end thereof, another structure movable
on said supporting structure to a predetermined
stationary supporting structure, a plurality of
spaced terminals mounted on said supporting
relatively stationary spaced contacts mounted
from one end thereof, another structure movable
on said supporting structure to a predetermined
position thereon from the other end thereof, rela
structure, a structure movable on said supporting
position thereon from the other end thereof, 60 structure to a predetermined position thereon
on said two movable structures for conductive reg
ister with said terminals when the two movable
tively stationary spaced contacts mounted on said
two movable structures for conductive register
with said terminals when the two movable struc
on said two movable structures for respective en
tures are in their respective predetermined posi
gagement with the stationary contacts thereon,
tions, cooperating movable contacts mounted on
means for actuating the movable contacts on said
movable structures, and interlocking means on 70 said two movable structures for respective en
gagement with the stationary contacts thereon,
said structures for preventing movement of either
in eans for actuating the movable contacts on said
of said movable structures from its predetermined
movable structures, interlocking means on said
position except when the movable contacts on the
structures for preventing movement of either of
structure are in predetermined circuit controlling
said movable structures from its predetermined
positions-and all of the contacts on the other 75
structures are in their respective predetermined
positions, cooperating movable contacts mounted
65
‘15
2,411,730
position except when the movable contacts on the
structure are in predetermined circuit controlling
positions and all of the contacts on the other
structure are in predetermined circuit control
ling positions and for preventing linear movement
of the remaining structure while the one struc
ture is out of its predetermined position, and
means for preventing a change in the circuit
controlling positions of the contacts on either of
said movable structures while it is being moved
to and from its predetermined position on the
supporting structure.
17. A multistage multiposition electric switch
comprising two electrically and mechanically in
_
‘
"16
mitting rectilinear movement of one of said mem
bers when the members are in a predetermined
position to effect the separation of said members
and the removal of said one of said members from
said structure, and means for preventing rotation
of the other of said members from said prede
termined position when the members are sep
arated.
‘21. In an electric switch, a supporting struc
ture, two rotatable contact carrying members
mounted on said structure and normally inter
connected for simultaneous rotation, means for
permitting rectilinear movement of one of said
dependent movable contacts in at least one stage, la members when the members are in a predeter
mined position to e?ect separation of the mem
an intermittent driving mechanism for actuating
said contacts, and a quick make and break cen
bers, and means e?ective on a predetermined sep
aration of the members to prevent both rotary
tering mechanism for positioning said contacts
and rectilinear movements of the other member.
independently of the force applied to actuate said
22. In an electric switch, a supporting struc
driving mechanism.
18. A multistage multiposition electric switch 20 ture, two rotatable contact carrying members
mounted on said structure and normally inter
comprising relatively movable cooperating con
connected for simultaneous rotation, means for
permitting rectilinear movement of one‘ of said
members when the members are in a predeter~
i) mined position to effect separation of the mem
bers, and means for permitting rectilinear move
base in which one end of one of said rotatable
ment of the other of said members when the
members is supported, a removable operating
members are in a di?erent predetermined posi
member adapted for engagement with said one
tion
to e?ect separation of the members.
of the rotatable members, and means on said base
cooperating with said operating member to tire 30 23. In an electric switch, a supporting struc
ture, two rotatable contact carrying members
vent the removal or application thereof except
mounted on said structure and normally inter
when said one of the rotatable members is in a
connected for simultaneous rotation, means for
predetermined position.
permitting rectilinear movement of one of said
19. A multistage multiposition electric switch
tacts in each stage, a driving mechanism for actu~
ating said contacts comprising two rotatable
members, a quick make and break centering
mechanism between said rotatable members, a
comprising two electrically and mechanically in
dependent movable contacts in each stage, an
members when the members are in a predeter
mined position to effect separation of the mem
bers, means for permitting rectilinear movement
of the other of said members when the members
sitioning said contacts independently of the force 40 are in a different predetermined position to effect
separation of the members, and means effective
applied to actuate said driving mechanism.
on a predetermined rectilinear separating move
20. In an electric switch, a supporting struc
ment of one of said members to prevent both
ture, two rotatable contact carrying members
rotary and rectilinear movements of the other
mounted on said structure and normally inter
member.
connected for simultaneous rotation, means per
intermittent driving mechanism for actuating
,said contacts, and a centering mechanism for po
ORLONDO A. HUNTSMAN.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 675 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа