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Патент USA US2132624

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Oct. 11, 1938.
J. G. JACKSON
2,132,624
ENCLOSED CIRCUIT BREAKER
Filed July 1, 1935
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Patented Oct. 11, 1938
‘
‘UNITED STATES’ PATENT OFFICE
2.18am
.
moms!» clam-r
John G. Jackson. purist, men, alaignor to
Square 1) Company Detroit, Micla, a corpora
tianolmehigu
'
y
am hi, i. ms, Serial No. 29,211
15 Claims.
(Cl. 200-50)
This invention relates to enclosed automatic
electric circuit breakers and has for its object
the provision of an improved enclosure for circuit
breakers.
' 5
Another objector this invention is to provide
an enclosed automatic circuit breaker with a
pivotal mounting providing for swinging movement to the exterior of the enclosing bog.
Another object 01 this invention is to provide
10 an enclosed automatic circuit breaker with an
improved operating member.
extends across the front of the breaker and car
rips a part I engaging the breaker handle 1.
This part I may be U-shaped and extend through
parallel slots in the crank U, being held therein
by stud II with the less of the U disposed on on- is
posite sides 0! the handle ‘I. A side operating
handle it is mounted on the free side of the sad
die 4 and has operative connection to crank I.
It is, oi’ course, obvious that the crank 8 and
handle I! may be integral
.
.
The box wall is provided with a slot which re
Another object of this invention is to provide
an enclosed automatic circuit breaker having a
front operating handle with an operating mema 1g ber engaging said handle at all times to prevent
0n the Saddle 4- The stud '3 when tightened
down will secure the saddle 4 within the box I, the
side oi’ the saddle then serving to seal ‘the slot in ;
damage thereto.
the box wall.
Another object oi.’ this invention is to provide a
swingable mounting for an eneleeed automatic
' circuit breakerwith an improved interlock con20 struction.
_
'
Other obiects and ieatures of this invention
will be readily apparent to those skilled in the art
from the following speci?cation and appended
drawing illustrating certain preferred embodi-
-
A spring pressed latch i4 is mounted on the box
wall and extends through a slot in the cover 2 to
latch it in closed Position.
An interlock to prevent operation 0! the breaker ‘ ‘
to “on" position while the cover is open and‘to
prevent opening of the cover while the breaker
is "on" is provided. This embodies a Part II
movable with the saddle 4 and rigidly intercom.
25 ments of the invention. This invention is a con-
neeted with the handle II and crank I.‘ A sec
tinuation in part of 'my oopending application,
Serial No. 765,265‘, med November 30, 1934'.
’
In the drawing:
Figure 1 is a front elevational view of, an en30 closed circuit breaker according to‘ the' present
invention with the cover broken away to show
0nd part II is pivctally mounted on the box wall
and is spring pressed as by the spring 11 toward
the part. II. A third part I! oi.’ the interlock is
rigidly secured to the cover and is adapted to
engage the Dirt I. and swing it away from the i
part II when the cover is in closed position. This
internal parts.
-
Figure 2 is a sectional view on the line 11-11
of Figure 1. ‘
36
.
' _ anism.
-.
Figure 4 is a detail view oi’ the interlock with
40
4
swinging movement of the part it swings a latch
ing portion it into engagement with a hook 2|
on the part II.
Figure 3 is an enlarged detail view on the line
III-I11 of Figure 1 showing the interlock mechthe cover open.
l0
ceives the handle I! and a stud It also mounted
‘
Figure 5 is a detail sectional .view‘ of the inter-
When the breaker is in "oil'"
position in thev position shown in Figure 3, the
opening movement of the cover permits the
- member‘ II to swing clockwise from the position
there shownto disengage the latch II from the
hook 2i. However, when the breaker is moved to.
“011" P08114011 the Part I‘ Will be rotated counter
lock mounting taken on the line V-—V of Figure 1.
clockwise to a position opposite the surface I! on
The circuit breaker enclosure, according to the
the part ll. whereupon the described swinging
present invenuqn, mm“ a, box | mm a
coverI pivotally mounted thereonasat I; 'With-
movement to release the cover will be prevented
and the cover locked 1“ Wsmm- when the
m the box is disposed-a ‘humped Male or “up
cover is opened the interlock parts assume the
4 plvotally mounted as at s to the box wall. The
‘
.
saddle 4 is spaced from the back wall oi’ the box
I and extends thereacross into engagement with
_
60 the opposite side of the ho!‘ A Mt‘b'm .
is rigidly mounted on the saddle 4. This circuit
break" my be 0! W °°nm?°m1 1°!!! “4 18
here shown 85 8 "liable circuit. brake! ill-V1118
a front Operated handle ‘I. A crihk I ll Divotllly
55 mounted in the opposite sides of the saddle 4 and
“sit-1°“ 511°“ 1“ Film’6 4 with the Pm " en‘
gaged with part I! to prevent movement of the
operating mm d1 e toward “on” position The
swinging movement of the part It is limited to
thepositionshown in Figure 4 by a stop 23 on the 5’
box Wm
~
It is thus seen that the saddle 4 and its asso
ciated parts including the handle i2 and the inter
lock part It may be swung to the exterior of the
box when the cover is openedto uncover the box
'
2
I
greases
interior and that when the saddle is sg back
within the box the interlock‘ parts i6 and it will
be properly engaged. This pivotal mounting for
the circuit breaker is particularly adapted for ease
in wiring as with the saddle spaced from the back
wall of the box (as‘ more particularly shown in
Figure 2) to provide a wiring space, the screw
58 may be loosened and the saddle and its asso
ciated parts ?ipped to the exterior of the box,
‘10
whereupon the wires may be drawn into the box
interior and the saddle then readily swung back
into the box and the stud i8 tightened to hold
the breaker in position within the box.
It is to be noted that the crank 8 always extends
15 in.front of the breaker with its part 9 always in
engagement with the handle ‘l to prevent damage
thereto.
.
gaging said handle, said‘element having another,
portion on the exterior of said box and serving as
an outside operating handle.
4i. In an enclosed circuit breaker, an enclosing
box, a cover for said box, a supporting member
pivotally mounted in said box, a circuit breaker
mounted on said member and comprising auto-'
matically and manually operable electric circuit
breaker mechanism, an enclosure for said mech
anism and an operating handle extending through '10
the enclosure, an operatingv element rotatably
mounted on said member and having a portion
exten
over said breaker and carrying means
engaging said handle, said element having
another portion on the exterior of said box and 15
serving as an outside operating handle, said mem
ber, breaker, and element-being bodily swingable
to
' _To facilitate . the swinging movement of the
saddle l to the box exterior, the corner thereof ' to
20
remote from the pivotal mounting 5 is provided
the exterlorof the box, while being attached
d supported on the box when the cover is
open.
20
5. In an enclosed circuit breaker, an enclosing.
with a chamfered portion 24 which may be in the
form of a rounded curve if desired.
,
box, a cover for said box, a supporting member
While certain preferred embodiments of the ‘pivotally mounted in said box for swinging move
invention have been speci?cally disclosed, it is ment to the exterior thereof while attachedto
25 understood that the invention is not limited there
to as many variations will be readily apparent to
those skilled in the art and the invention is to
'30
and supported on the box, a circuit breaker 25
mounted on said member and comprising auto
matically and manually operable electric circuit
be given its broadest possible interpretation within
the terms of the following claims:
breaker mechanism, an enclosure for said mecha
nism and an operating handle extending through
What is claimed is:
1. In an enclosed circuit breaker,-an enclosing
the enclosurehan operating element rotatably
' box, a cover for said box, a circuit breaker mount
‘ed in said box and comprising automatically
and manually operable electric circuit breaker
35 mechanism, an enclosure for said mechanism and
, an operating handle extending through the en
mounted on said member and having a portion
extending over said breaker and carrying means
engaging said handle, said element having
another portion on the exterior of said box and
serving‘ :as an outside operating handle, said 35
second portion extending through a slot in the
closure, an operating member rotatably mounted
box wall to permit swinging of the member and
on said box, said member having a portion extend
its supported elements to the exterior of the box. ‘ _
ing over said’circuit breaker and carrying a part
40 engaging said handle, said member having a por
tion extending exteriorly oi the box wall and con
stituting an outside operating handle, said part
comprising a removable element having spaced,
depending legs disposed on opposite sides of said
circuit breaker handle without positive connection
45 thereto and"operating to move the same in re-’
sponse to movement of said operating member.
'2. In an enclosed circuit breaker, .an enclosing
box, a cover for said box, a circuit breaker mount
ed in said box and comprising automatically and
50 manually operable electric circuit breaker mecha
nism, an'enclosure for said mechanism and an
operating handle extending through the en
closure, a crank rotatably supported on opposite
walls of said box and having a portion extending
over said circuit breakensaid portion carrying a
part engaging said circuit breaker handle, and an
.Outsilde operatinghandle mounted on said box and?
6. In an enclosed circuit breaker, an enclosing
box, a cover for said box, a supporting member
'pivotally mounted in said box’for swinging move
ment to the exterior thereof while attached to and .
supported on the box and spaced at least in part
from the rear wall of the box, a circuit breaker I
mounted on said member- and comprising auto
matically and manually operable electric cir
45
cult breaker mechanism, an enclosure for said
mechanism and an operating handle extending
through the enclosure, a crank pivotally mounted
.on said member, said crank extending over said 50
circuit breaker. and carrying a part engaging said
handle, "and an outside operating handle‘ mounted ‘
on said member and having an operating connec
tion'with said crank.
.
‘I. In an enclosed circuit breaker, an enclosing 55
box, a cover for said box, a supporting‘ member
pivotally mounted in said box for swinging move
ment to the exterior thereof while attached to
and supported on the box, a circultf breaker.
part comprising 9' senerellfwshaped element 1'6" mounted on said member and comprising auto
movably mounted on said portion and‘ having its matically and manually operable electric circuit
legs disposed on opposite sides of said circuit breaker mechanism, an enclosure for said mecha
nism and an operating handle extending through
breaker handle.
3. In an enclosed circuit breaker, an enclosing they front of the enclosure, a crank rotatably
box, a cover for said box, a supportin'gmember mounted on said member and extending over the
.pivotally mounted in said box for swinging move
front of said breaker and carrying a part en
ment to the exterior thereof while attached to '\ gaging said handle, and an outsideoperating
having operative connection with said crank, said
and supported on the box, a’ circuit breaker
mounted on said member and comprising auto
matically and manually operable electric circuit
.70 breaker
mechanism, an enclosure for saidmecha
nism and an operating handle extending through
the enclosure, an operating element rotatably,
mounted on said member and having a portion ex
75 tending over said breaker and carrying means en
handle having operative connection with' said
crank.
I
'
~
8. In an enclosed circuit breaker, an enclosing 70
box, a cover for said box, a supporting member
'pivotally mounted in said box for swinging move
mentto the exterior thereof while attached to and
supported on the box, a circuit breaker mounted
on ‘said member and- comprising automatically
I
3
and manually operable electric circuit breaker
mechanism, an enclosure for said mechanism and
an operating handle extending through the front
of the enclosure, a crank rotatably mounted on
said member and extending over the front of said
breaker and carrying a part engaging said handle,
and an outside operating handle having operative
connection with said crank, said member being
provided with a clearance portion remote from the
10 pivotal mounting to provide for swinging. move
ment to the box exterior.
I
9. In an enclosed circuit breaker, an enclosing
box, a cover for said box, a supporting member
pivotally mounted in said box for swinging move
15 ment to the exterior thereof while supported on
the box, a circuit breaker mounted on said mem
ber and comprising automatically and manually
operable electric circuit breaker mechanism, an
enclosure for said mechanism and an operating
20 handle extending through the enclosure, an oper
ating element rotatably mounted on said member
and having a portion extending over said breaker
and carrying means engaging said handle, said
element having another portion on the exterior of
said box and serving as an outside operating
handle, and an interlock comprising a part mov
able with said element, a second part mounted
on the box wall and a third part carried by the
cover, said ?rst part being swingable with the
30 member to the box exterior and readily engaging
and disengaging with the second part.
10. In an enclosed circuit breaker, an enclosing
box, a cover for said box, a U-shaped saddle dis
posed in said box with the base of the U spaced
from the back wall of the box, a circuit breaker
mounted on said saddle and comprising auto
matically and manually operable electric circuit
breaker mechanism, an enclosure for said mecha
nism and an operating handle extending through
"the front of the enclosure, and an operating mem
ber rotatably mounted on said saddle and hav
ing a portion extending over said breaker and
carrying a part engaging said handle, said mem
ber extending to the exterior of the box and
terminating in an operating handle.
11. In an enclosed circuit breaker, an enclosing
box, a cover for said box, a U-shaped saddle piv
otally mounted in said box, a circuit breaker
mounted on said saddle and comprising auto
matically and manually operable electric circuit
breaker mechanism, an enclosure for said mech
‘anism and an operating handle extending through
the front of the enclosure, a crank rotatably
mounted on said saddle and extending over the
55 front of said breaker and carrying a part engag
ing said handle, an outside operating handle
mounted on said saddle and having operative
connection with said crank, said saddle and its
associated parts being bodily swingable to the
box exterior, said crank extending over said
breaker and engaging the breaker handle through
said part at all times to Protect said breaker
handle against damage.
12. In an industrial type circuit breaker, an
enclosing box, a cover for said box, a U-shaped
saddle disposed in said box with the base of the
U spaced from the back wall of the box, a circuit
breaker having a front operating handle mounted
on said saddle and an operating member rotat
ably mounted on said saddle and having a portion
extending over said breaker and carrying a part
engaging said handle, said member extending to
the exterior of the box and terminating in an 1.
operating handle, said saddle being pivotally
mounted within said box and having a clearance
portion remote from said pivot to provide for
swinging movement to the exterior of said box.
13. In an enclosed circuit breaker, an enclosing ll
box, a cover for said box, a U-shaped saddle dis
posed in said box with the base of the U spaced
from the back wall of the box, a circuit breaker
having a front operating handle mounted on said
saddle and an operating member rotatably mount
ed on said saddle and having a portion extending
over said breaker and carrying a part engaging
said handle, said member extending to they ex
terior of the box and terminating in an operat
ing handle, said saddle being pivotally mounted
on said box with the corner thereof remote from
said pivot chamfered to provide clearance for
swinging movement of the saddle.
14. In an enclosed circuit breaker, an enclosing
box. a cover for said box, a supporting member
pivotally mounted in said box for swinging move
ment to the exterior thereof, a circuit breaker
mounted on said member and having a front oper
ating handle, a crank rotatably mounted on said
member and extending over the front of said
breaker and carrying a part engaging said handle,
an outside operating handle having operative
connection with said crank, and an interlock
comprising a part carried by said member, a
second part carried by said box and a third part
carried by said cover.
15. In an enclosed circuit breaker, an enclosing
box, a cover for said box, a supporting member
pivotally mounted in said box, a circuit breaker
mounted on said member and having a front oper
ating handle, a crank rotatably mounted on said
member and extending over the front of said
breaker and carrying means engaging said handle,
an outside operating handle connected to said
crank, and an interlock comprising a part rotat
able with said outside handle and crank, a second
part pivotally mounted on said box and a third
part carried by said cover, said first and second
parts being readily engageable and disengageable
upon swinging movement of said member, said
second part preventing rotation of said ?rst part 55
when the cover is open and engaging said third
part to prevent opening of said cover when the
breaker is closed.
JOHN G. JACKSON.
60
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