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Патент USA US2128999

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Patented Sept. 6, 1938
‘ 2,128,999
UNITED STATES
PATENT OFFICE '
‘2,128,999 '
SWITCH
William H. Frank and Lawrence E. Fisher, '
Detroit, Mich. _
Application January 16, 1936, Serial No. 59,379
18 Claims. (Cl. 200-—151)
This application relates to contact arrange
positioned to engage, wipe, and embrace the
ments for switches and more speci?cally relates stationary contacts. '
g
1/
to multiple break contact arrangements.
2. A switch including two adjacentstationary
For an understanding of the switch contact contacts, an insulation blade movable between
5 arrangements herein, disclosed reference should and in substantially wiping engagement with
be had to the appended drawing disclosing the them and provided with a contact positioned be
same.
,
1
tween the adjacent stationary contacts to engage'
In this drawing, Figs. 1 and 2 are sections as and wipe them, the blade also carrying a second
if on line I—-l of Fig. 3 showing the switch parts contact electrically connected to the ?rst blade
10 in on and off positions respectively.
contact and adapted to engage and wipe the 10
Fig. 3 is a side elevation.
stationary contacts independently of the engage
It will be seen that’ the contact arrangement ment between them and the ?rst blade contact.
herein disclosed includes an ‘insulating base l0
3. A switch including two adjacent stationary
upon which are mounted spaced stationary con
15 tacts II having conductor terminal binding posts
l2. For engaging each of the stationary contacts
there is provided, within a slide 15 formed as part
of an insulation housing IS, a movable contact
contacts, an insulation blade movable between '
and in substantially wiping engagement with 15
them and provided with a contact positioned be
tween the adjacent stationary contacts to engage
and wipe them, the blade also carrying a second
35 formed to engage the contacts with a butt
20 pressure and with a wiping contact engagement.
In addition the housing I6 is shown as pro
contact electrically connected to the ?rst blade
contact and adapted to engage and wipe the sta- 20
vided with a U-shaped contact spring 35 having
contact tips 31. The spring 36 functions to urge
the tips of the stationary contacts ll towards
25 each other and thus increase the butt contact
between them and the first blade contact, the
second blade contact being U-shaped and'formed
to, embrace the stationary contacts.
4. A switch including two adjacent stationary 25
contacts, an insulation blade movable between
pressure of them on contact 35 and to urge con
tionary contacts independently of the engagement
tact tips 31' tightly into engagement with the and in substantially wiping engagement with
stationary contacts ll; contact tips 31 provide them and provided with a contact positioned to
arcing tips: it being observed that contacts, 31 engage and wipe a part of each stationary con
30 make with stationary contacts ll before and ‘tact, the blade also carrying a second movable 36
break therefrom after the movable contact 35 contact in the form of a U-shaped spring, elec
makes and breaks contact with contacts I I.
trically connected-to the first blade contact and
The housing It is adapted to be reciprocated by positioned to engage, wipe, and embrace the
stationary contacts, the blade and its contacts
means not shown for make and break.
being enclosed within a hollow housing having 35
35
It will be observed that the edges of the open
ings in the bottom wall of the housing IS on the ‘ openings on opposed sides of the blade receiving
/
'
opposite sides of the blade l5 through which the stationary contacts.
'5.
A
switch
including
two
adjacent
stationary
contacts ll pass are dimensioned'to ?t‘- closely
40 around the stationary contacts ll ‘so that the contacts, an insulation blade movable between
- interior of the housing is sealed at alltimes by and in substantially wiping engagement with 40
the stationary contacts ll.
,
Now having described the switching contact
arrangement herein disclosed, reference will be
45 had to the following claims for a determination
'
of the inventions claimed.
We claim:
V
1. A switch including two adjacent stationary
' contacts, an insulation blade movable between
50 and in substantially wiping engagement with
‘ them and provided with a contact positioned to
engage and wipe a part _of each stationary con
tact, the blade also, ‘carrying a second movable
contact in the form of a U-shaped spring, elec
55 trically connected to the ?rst blade contact and
them and provided with a contact positioned be- '
tween the adjacent stationary contacts to en- 1
gage and wipe them, the blade also carrying'a
second contact electricallyconnected to the first
blade contact and adapted to engage and wipe 45
the stationary contacts independently of the en
gagement between them and the ?rst blade con- '
tact, the blade- and its contacts being enclosed
within a hollow housing having openings on op
posed sides of the blade receiving the stationary 50
contacts.
I
'
_
-
6. A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantially wiping engagement with
them and provided with a contact positioned be- 56
2
2,128,999
tween the adjacent stationary contacts to engage ' contacts independently of the engagement be
and wipe them, the blade also carrying a second
contact electrically connected to the. ?rst blade
contact and adapted to engage and wipe the
stathnary contacts independently of the engage
tween them and the first blade contact.
ment between them and the ?rst‘blade contact,
the second blade contact being U-shaped and
and provided with a contact positioned between
the adjacent stationary contacts to engage and
wipe them, the blade also carrying a second con
formed to embrace the stationary contacts, the
blade and its contacts being enclosed within a
10 hollow housing having openings on opposed sides
of the blade receiving the stationary contacts.
7. A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantially wiping engagement with
them and provided with a contact positioned‘to
engage and wipe a part of each stationary con
tact, the blade also carrying a second movable
12. A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantial wiping engagement with them
tact adapted to engage and wipe the stationary
contacts independently of the engagement be
10
tween them and the ?rst blade contact, the sec
ond blade contact being U-shaped and formed to
embrace the stationary contacts.- _
13. A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantial wiping engagement with them
and provided with a contact positioned to engage
contact in, the form of a U-shaped spring, elec- ' and wipe apart of each stationary contact, the
' trlcally connected to the ?rst blade contact and
20 positioned to engage, wipe, and embrace the sta
tionary contacts, the blade and its contacts being
blade also carrying a second movable contact in
the form of a U-shap'ed spring positioned to en
gage, wipe, and embrace the stationary contacts,
enclosed within a hollow housing having open- .. the blade and its contacts being enclosedwithin a
ings on opposed sides of the blade receiving the
stationary contacts, the edges of the openings be
ing dimensioned at fit close around the stationary
hollow housing having openings on opposed sides
of the blade receiving the stationary contacts.
14.‘ A switch including two adjacent stationary
contacts.
contacts, an insulation blade movable between
and in substantial wiping engagement with them
and provided with a contact, positioned between
,
8. A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantially wiping engagement with
them and provided with a contact positioned be
tween the adjacent stationary contacts _to en-J
gage and wipe them, the blade also carrying a
second contact electrically connected to the ?rst
blade contact and adapted to engage and wipe
the stationary contacts independently of the en
gagement between them and the ?rst blade con
tact, the blade and its contacts being enclosed
within a hollow housing having openings on op
posed sides of the blade receiving the stationary
contacts, the edges of the openings being dimen
sioned to ?t close around the stationary contacts.
9. A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantially wiping engagement with
them and provided with a contact positioned be
tween the adjacent stationary contacts to engage
and wipe them, the blade also carrying a sec
ond contact electrically connected to the ?rst
blade contact and adapted to engage and wipe
the stationary contacts independently of the en
gagement between them and the ?rst blade con
tact, the second blade contact being U~shaped
and formed to embrace the stationary contacts
the blade and its contacts being enclosed within
55 a hollow housing having openings on opposed
sides of the blade receiving'the stationary con
tacts, the edges of the openings being dimen
sioned to ?t close around the stationary con
tacts.
10. A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantial wiping engagement with them
and provided with a contact positioned to engage
and wipe a part of each stationary contact, the
blade also carrying a second movable contact in
the form of a U-shaped spring, positioned to en
gage, wipe, and embrace the stationary contacts.
11. A switch including two adjacent stationary
70 contacts, an insulation blade movable between
and in substantial. wiping engagement with them
and provided with a contact positioned between
the adjacent stationary 'contacts‘to engage and
wipe them, the blade also carrying a second con
75 tact adapted to engage and wipe the stationary
the adjacent stationary contacts to engage and
wipe them, the blade also carrying a second con
30
tact adapted to engage and wipethe stationary
contacts independently of the engagement be
tween them and the ?rst blade, contact, the blade
and its contacts being enclosed within a hollow
housing having openings on opposed sides of the
blade receiving the stationary contacts.
15. A ‘switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantial wiping engagement with them
and provided with a contact positioned between
the adjacent stationaryv contacts to engage and
wipe them, the ‘blade also carrying a second con
tact adapted to engage and wipe the stationary
contacts independently of the engagement be
tween them and the ?rst blade contact, the second
blade contact being U-shaped and formed to em
brace the stationary contacts, the blade and its
contacts being enclosed within a hollow housing
having openings on opposed sides of the blade re
ceiving the stationary contacts.
16.~A switch including two adjacent stationary
contacts, an insulation blade movable between
and in substantial wiping engagement with them
and provided with a contact positioned to engage
and wipe a part of each stationary contact, the
blade also carrying a second movable contact in
the form of a U-shaped spring positioned to en
gage, wipe, and embrace the stationary contacts,
the blade and its contacts being enclosed within
a hollow housing having openings on opposed 60'
sides of the blade receiving the stationary con
tacts, the edges of the openings being dimen
sioned to ?t close around the stationary contacts.
17. A switch including two adjacent stationary
contacts, an insulation blade movable between 65
and in substantial, wiping engagement with them
and provided with a contact positioned between
the adjacent stationary contacts to engage and
wipe them, the blade also carrying a second con
tact adapted to engage and wipe the stationary 70
contacts independently of the engagement be?
tween them and the ?rst blade contact, the blade
and its contacts being‘ enclosed within a hollow
housing having openings on opposed sides of the
blade receiving the stationary contacts, the edges 75
2,128,999
_
.
of the openings being dimensioned to ?t close ' tween them and the ?rst blade contact, thelaecond,
blade contact being U-shaped and formed toem
around the stationary contacts.
‘
18. A switch including two adjacent stationary brace the stationary contacts, theblade and its
contacts, an insulation blade movable between
and in substantial wiping engagement with them
and provided with a contact positioned between
the adjacent stationary contacts to engage and
wipe them, the blade also carrying a second con
tact adapted to'engage and wipe the stationary '
10 contacts independently of the engagement be
contacts being enclosed within a hollow'housink
having openings on opposed sides of thebladere
ceiving the stationary contacts,- the edges of ‘the
openings being dimensioned to ?t close around
the stationary contacts.
_
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LAWRENCEYE. FISHER,
10
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