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Патент USA US2130398

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sept. 2o, 1938.
2,130,398
A. B. RYPINSKI
SWITCH CONSTRUCTION
Filed NOV. 2, 1936
'
2,130,398
Patented Sept. 20, 1938
PATENT QFFICE
UNM‘ED
`2,ll30,39s
SWETCH CONSTRUCTEON
Albert B. Rypinslii, Laureiton,
Y.,assignor to
Metropolitan Device Corporation, a corpora
tion 'of New York
Application. November 2, 1936, Serial No. 108;'768
6 Claims.
The invention herein disclosed relates to a
switch construction of the type that is enclosed
in a cabinet and in particular to a switch con
struction of the' type commonly known as a
5 “quick make and break” switch in which the
switch is opened and closed by a snap action
mechanism.
In switch constructions of this type, there is
provided a snap action mechanism which usually
consists of an element that acts upon the switch
to actuate the movable element of the switch to
open and close the switch. This actuating ele
ment is moved manually, through an operating
handle and intermediate mechanism, from one
extreme position of its movement to a position
(Cl. Zilli-£7)
Fig. 3 is a transverse section taken on the line
3-3 of Fig. 1;
'
Fig. 4 is a fragmentary section taken on the
line 4-4 of Fig. 3; and
'
Fig. 5 is another fragmentary section taken on
the line 5_5 of Fig. 3.
The switch construction illustrated in Figs. 1
to 5 is of the type commonly known as a quick
make and break switch construction that utilizes
a snap-action for opening and closing the switch.
The construction includes a sheet metal cabinet l
having a cover 2 that is secured to the cabinet
substantially midway of the two extreme posi
by hinges 3. Within the cabinet a combined
switch unit and fuse block is mounted. This
switch unit includes a switch support ¿l that is
made from a single piece of sheet metal. The
' tions of its movement, and resilient means, usu
switch support 4 comprises a base lia that abuts
ally a spring, carries the actuating element from
such midway position to the extreme position oi
its movement towards which it is directed by the
movement of the operating handle. rI‘he mecha~
nism heretofore used for effecting this operation
has been somewhat complicated, particularly in
switches of comparatively heavy capacity, and
it is an object of this invention to provide a
switch of this type that is simple and sturdy in
construction and comparatively inexpensive to
manufacture. Another object of the invention is
to provide a construction in which the switch
constitutes a unit that is readily and easily re
moved from the cabinet and replaced in the
cabinet.
in accordance with the invention there is pro
vided a switchunit that is removably secured in
35 the cabinet and operated by a switch-operating
handle exteriorly of the cabinet. The switch
unit includes a switch support that is secured
to the rear wall of the cabinet, a switch secured
to the support, a bail-shaped, switch-operating
member journaled in the support and operatively
connectedto the switch, and snap-action, bail
operating mechanism mounted on the support.
The snap action mechanism includes an actu
ating element that is directly engaged by a
switch~operating handle that is mounted in the
side wall of the cabinet and exteriorly of the
cabinet so that the switch may be operated with
out opening the cabinet.
A. switch constructed in accordance with the
invention is illustrated in the accompanying
drawing in which:
Fig. l is a plan view of the switch, the cover
of the cabinet being in the open position;
Fig. 2 is a side elevation of the same;
against and is secured to' the rear wall ia of the
cabinet I by machine screws 5. At those por
tions of the base where the machine screws are
received, there is an opening 6 in the base which
is large enough to receive the head of the screw 5.
This opening communicates with a slot 6a which
is of less width than the head of the screw. This
arrangement is provided so that the switch sup
port may be secured to and removed from the
cabinet without wholly removing the machine
screws 5. The switch support ¿l also includes a
switch-supporting portion ¿ib that is spaced from
the base êla, an extension lic on one side of the l
base and an extension lid at the other side of
the base.
To the switch-supporting portion ¿lb of the
switch support, a combined switch unit and fuse
block ‘l is secured. The base ‘la of the switch
unit is directly secured to the switch-supporting
portion of the switch support and it is, in conse
quence, spaced from the rear wall la of the
cabinet. The switch 'l is of a type well known
in the art and includes three rotatably mounted
switch elements la, lb and lc. A bail-shaped
switch-operating member includes aligned bear~
ing sections ßa and 8b at each end thereof that
are journaled in the extensions llc and iid. The
bail also includes an olîset section 8c that ex
tends between the switch and the rear wall of
the cabinet or the plane of the base of the switch
support and legs 8d and 8e joining the bearing
sections and the oiîset section 8c. The oiîset
section 8c of the bail member is received in slots 50
in the rotatably mounted switch elements la,
'lb and lc. The bearing section _8b is journaled
in a bushing 9 secured in the extension ¿ld and
upon which a bail-operating member It is rotat
ably mounted. The leg 8e of the bail member 55
2
3,180,898
is such that it lies adjacent the extension 4d
and substantially parallel thereto. As the bail
member-is swung about the axis of its bearing
portions, the switch elements 1d, 1b and 1c are
c
handle operates between stops 23 and 24 mounted
moved about their axes so as to open or close
on the outer surface of the side wall Ib. _These
stops are'in the form of angle brackets and en
gage a projection IIb formed on the handle II.
In the section IIa o1' the operating handle there
the switch.
is formed a groove II c which extends between
The bail-operating member’ I0 forms a part
of the quick make and break mechanism that is
the lugs I1 and I8. The extension IIId from the
rotatably mounted member- III extends into the
mounted on the extension 4d.
groove I I c and as the operating handle is turned,
The member III
10 is made of heavy sheet metal and includes a
radial extension or arm Illa, spaced, laterally ex
tending abutments Illb and I 0c, extending to
wards the switch and embracing the leg le of
the bail member, and a lateral extension IIId
15 extending in a direction opposite to the direction
of the abutments I 0b and Inc. The abutments
or lateral extensions IIlb and IIIc are positioned
to engage the bail member as the disk I0 is ro
tated. It will be observed that if the disk III is
20 rotated counterclockwise from the position
shown in Figure 4, the edge of the extension I0b
will, after the disk has turned through a deiinite
angle, engage the leg 8e 'of the bail member and
continued rotation of the disk will effect rotation
of the bail member and thus cause rotation of
the switch elements. The lateral extension Ind
extends through an arcuate slot 4e formed in the
extension 4d and through this extension I?cZ the
bail-actuating member Ill is actuated by a
30 manual lever or handle I I.
A snap action of the disk I Il is effected by the
for example, counterclockwise from the position 10
shown in Fig. 5, the end of the groove at the lug
I1 engages the projection or extension IIId 'and
thus causes a rotation of the disk to a point where
the spring I2 carries the disk the full movement
to open or close the switch. Likewise, when the ll
switch handle is moved in the opposite direction
the end of the groove represented by the lug I9
engages the projection orV extension I0d and
moves the disk in the opposite direction.
These switches are usually mounted with the
rear wall Ia of the cabinet vertical. Due to the
blades on the rotating switch elements, there
is a slight unbalance of these elements and unless
restrained, the bail memberv and switch elements
tend to follow movement o! the actuating disk
lll before the bail is engaged by the abutment
I0c.
To effect such restraint on. the bail mem
ber there is provided a leaf spring 25 that is
secured to the switch support and which engages
the bail member when the bail is in the upper
most position of its movement, i. e., when the
use of a spring I2 that surrounds a rod I3, one
switch is in the open position.
end of which is pivotally secured to the arm I 0a
of the disk I0 at I4. The rod extends through
Movement of the bail member in either direc
tion is limited by a stop plate 26. 'I'his plate in
cludes a section 26a that is secured to the switch 35
support and a section 2Gb at right angles to the
section 26a and lateral of the rear wall of the
f- and it is slidably mounted in a bracket I5 mount
ed on the plate 4d and the spring acts between
the bracket I5 and a shoulder I3a. formed on the
rod adjacent the pivot I4. When the disk I0 is
moved counterclockwise from the position shown
in Fig. 4, the spring I2 will iirst be compressed
as the disk moves to the position in which the
abutment IIlb engages the bail, and as the disk
I0 passes a point where the axis of the rod and
the center of the pivot crosses the axis of the
45 bail member or the disk I0, the energy stored up
in the compressed spring I2 will cause a rapid
movement of the disk III thus effecting a snap
action or a quick make or break movement of
the switch.
When rotated in the opposite direc
50 tion the same effect is of course obtained, the
`abutment I0c acting on the bail member.
It will be seen from the above description, that
the switch mechanism so far described consti
tutes a complete unit that may be removed from
55 the> cabinet as a unit since the switch and all
operating parts thereof` are mounted upon the
switch support.
The disk I0 is rotated about its axis to effect
the operation of the switch by a switch-operating
60 handle II. The switch-operating handle has
a circular portion IIa that is received in an open
ing I5 in the side wall Ib of the cabinet. On the
section IIa of the switch-operating handle, there
are formed three overhanging lugs I'I, I8 and I9
In inserting the handle,
these lugs are received .in corresponding slots
20, 2I and 22 that are radial of the circular open
ing I6 in which the section IIa of the operating
handle is received. As the handle is rotated, the
70 overhanging lugs engage the inner surface of the
side Wally I b of the cabinet and prevent the re
moval of the handle except when the lugs are
aligned with their corresponding slots. In use,
the lugs cannot become aligned with the over
75 hanging slots because the switch-operating
65 of different widths.
cabinet.
l
The section 26a has an arcuate groove
26e in the edge thereof and in 'which the section
8c of the bail member is received. The arcuate 40
slot terminates in radial shoulders 26dl and 26e
which form limit stops.
In removing the switch unit from- the cabinet,
theextension Iild slips out of the groove IIc in
the operating handle and it is readily and easily 45
inserted in the groove when the switch unit is
replaced. Thus the switch together with its
quick make and break or snap-action mechanism
is readily and easily removed from the cabinet
and replaced. To remove the switch it is only
necessary to loosen the machine screws 5. The
switch unit may be then slid along the rear wall
of the cabinet until the heads of the screws are
aligned with the opening 6 or free of the slots Ea
when the switch unit may be lifted from the 55
cabinet. It is not necessary, in removing the
switch unit or inserting another, to remove the
switch-operating handle I4.
It is obvious that various changes may be made
by those skilled in the art in the details of the
embodiment of the invention illustrated in the
drawing and described in detail above within the
principle and scope of the invention as expressed
in the appended claims.
I claim:
.
1. An enclosed switch construction comprising
a sheet metal cabinet and'a readily removable
switch unit within the cabinet including a switch
support removably secured to the rear wall of
the cabinet and constructed to support a switch 70
spaced from the wall of the cabinet, a switch
secured to the support and a bail-shaped, switch
operating member between the switch and the
rear wall of the cabinet and journaled in the
switch support, and a switch-operating member 75
2,130,398
extending through the side wall of the cabinet
and journaled therein coaxially with the bail
member.
2. An enclosed switch construction comprising
a sheet metal cabinet and a readily removable
switch unit within the cabinet including a switch
support having a base removably secured to the
rear wall of the cabinet, a switch supporting
portion spaced from the base and an extension
at each side thereof extending substantially lat
erally of the plane of the base, a switch mounted
on the support and a bail-shaped, switch-oper
ating member extending transversely between
the switch and the rear wall of the cabinet and
15 journaled in said side extensions, and a switch
3
ing spaced abutments for engaging the bail
shaped member anda lateral extension, and a
switch-operating handle journaled in the side
wall of the cabinet coaxially with the bail-shaped
member and positioned to operatively engage the
extension of said rotatably mounted member.
5. An enclosed switch construction comprising
a sheet metal cabinet, a readily removable switch
unit within the cabinet including a switch sup
port removably secured to the rear wall of the
cabinet and having a lateral extension at each
side thereof, a switch mounted on the support,
a bail-shaped, switch-operating member jour
naled in said side extensions, and a snap-action
mechanism mounted on one of said extensions 15
operating handle extending through the side
and including a member rotatably mounted on
wall of the cabinet and journaled therein co
axially with the bail member.
the bail-shaped, switch-operating member and
having spaced abutments for engaging the bail
3. An enclosed switch construction comprising
a sheet metal cabinet and a readily removable
switch unit within the cabinet including a switch
support removably secured to the rear wall of
the cabinet, a switch mounted on the support,
a bail-shaped, switch-operating member jour
naled in the support and operatively connected
to the switch and a snap-action mechanism
mounted on the support including a rotatably
mounted member having spaced abutments for
engaging said bail-shaped, switch-operating
_member and a lateral extension, and a switch
operating handle journaled in the side wall of
the cabinet coaxially with the bail-shaped mem
ber and positioned to operatively engage the
extension of said rotatably mounted member.
4. An enclosed switch construction comprising
a sheet metal cabinet, a readily removable switch
unit within the cabinet including a switch sup
port removably secured to the rear wall of the
cabinet and having a lateral extension at each
side thereof, a switch mounted on the support,
a bail-shaped, switch-operating member jour
naled in said side extensions, and a snap-action
mechanism mounted on one of said extensions
shaped member and a lateral extension, and a
switch-operating handle journaled in the side 20
wall of the cabinet coaxially with the bail-shaped
member and having a groove therein positioned
to receive the extension of said rotatably mount
ed member.
6. An enclosed switch construction comprising
a sheet metal cabinet, a readily removable switch
unit within the cabinet including a switch sup
port removably secured to the rear wall of the
cabinet and having a lateral extension at each
side thereof, a switch mounted on the support 30
including rotatably mounted switch elements, a
bail-shaped. switch-operating member journaled
in said side extensions, and a snap-action mech
anism mounted on one of said extensions and
including a 'sheet metal disk rotatable about the
axis of the bail-shaped member and having
lateral abutments for engaging the bail-shaped
member, and a lateral extension, extending in
a direction opposite to the said abutments, and
a switch-operating handle journaled in the side
wall of the cabinet coaxial with- the bail-shaped
member and having a. groove therein positioned
to receive the extension from said disk.
and including a member rotatably mounted on
the bail-shaped, switch-operating member hav
ALBERT B. RYPINSKI.
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