close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3093724

код для вставки
June '11, 1963
3,093,714
S. NYBERG
PERMUTATION SWITCH
’ Filed March 7, 1961
"VI/EWTOR
STURE NYBERG .
BY
A'r'remcEY
United States Patent 0
1
1
3,093,714
PERMUTATION SWITCH
Sture Nyberg, Zug, Switzerland, assignor to Anstalt
Europaische Handelsgesellschaft, Vaduz, Liechtenstein
Filed Mar. 7, 1961, Ser. No. 94,006
Claims priority, application Switzerland Mar. 8, 1960
'4 Claims. (Cl. 200-43)
The present invention relates to permutation switches
of the type used particularly for coding and/or decoding
‘3,093,714
Patented June 11, 1963
2
are driven independently in a manner known per, se by a
control device generally indicated by the reference 15 in
the drawing. Construction and mode of operation of
such a control device 15 are known to the person skilled
in the art and form no part of the present invention.
For example, U.S. Patent No. 1,683,072 describes in detail
a control device which may be used with the apparatus
of the present invention.
Since the rotors, as already mentioned, are axially sepa
rated from each other during each switching operation,
apparatus having a plurality of switch rotors which are
the required su?icient contact pressure can easily be main
tained‘between the contacts 10 and 11 and the above
tively to each other and which are provided on their sides
mentioned disadvantages are avoided. When the rotors
facing each other with wiping contacts adapted to pass
are moved apart from each other, the contact pressure will
on the information from rotor to rotor. .
'
‘
15 be reduced and may easily reach the value 0. Neither
In order to obtain a correct and reliable operation,
excessive friction nor excessive Wear Will then occur, but
mounted on a common shaft and may be rotated rela
switches of this type must be provided with relatively
high contact pressures, primarily in order to compensate
for or avoid the inevitable soiling of the contact surfaces.
Increased contact pressure, of course, results into high
friction and an increased Wear of the contacts, which fact
on the one hand leads to an early destruction of the con
tacts and on the other hand facilitates the occurrence of
short circuits between adjacent contacts owing to the
deposition of metal dust thereon.
According to the invention the permutation switch
comprises a plurality of rotors axially movable to sepa
rate from each other by the action of clutch means re
sponsive to relative angular displacement of adjacent
rotors, for the purpose of reducing the contact pressure of
said wiping contacts during a switching operation.
The present invention will now be described in more
detail with reference to the accompanying diagrammatic
drawing illustrating, by way of example, a view in eleva
tion, partly drawn in section, of a preferred embodiment
the undiminished contact pressure is again effective after
the completion of a switching step and absolutely reliable
communication of the information from rotor to rotor is
obtained.
The amount of energy necessary for disengaging the
rotors can be kept low by ‘a suitable shape of the serra
tions 9. On the other hand, the control device 15 can be
formed so that, when several rotors are to be simultane
ously switched, these are always the two rotors situated
adjacent to each other, the remaining rotors which are
coupled to the rotors then rotating concurrently with one
of the rotors. A relative rotation thus will occur only
between two adjacent rotors to be switched.
'In the preceding description of the invention disengage
able serrations have been mentioned as means for axially
urging apart the rotors in response to their relative rota
so as to be rotatable and movable in axial direction on
tion, solely for the sake of easy demonstration. The ex
pert, however, has at his disposal numerous possibilities
which permit to realize the object of the invention also by
other mechanic, electric, pneumatic or hydraulic disen
gageable clutch means without departing from the scope
of the appended claims. For example, the disengageable
claws may be replaced by expanding members engageable
so as to be axially movable but not rotatable with respect
the rotors.
of the invention.
The Walls 1 of a switch casing, not further illustrated,
carry a shaft 2 having mounted thereon rotors 3, 4 and 5,
the shaft. At both sides of the rotors 3, 4 and 5 end 40 with adjacent rotors, or by balls inserted in a cage and
members ‘6 and 7, respectively, are mounted on the shaft 2
engaging into recesses provided on the opposite sides of
to the shaft. Compression springs 8 are inserted be
I claim:
tween the end members 6, 7 and the adjacent walls 1 of
1. A permutation switch, particularly for coding and/ or
the casing, which springs urge the rotors towards each 45 decoding apparatus, comprising a supporting shaft, a plu
other by the intermediary of the said end members 6 and
rality of rotors mounted for relative rotation and axial
7. The edge portions of the sides of the end members
movement on said shaft, coacting wiping contacts pro
facing the wheels 3 and 5, respectively, and the sides of
vided on the sides of said rotors facing each other, said
the rotors 3, 4 and 5 facing each other are provided with
Wiping contacts being adapted to pass information from
50
cooperating serrations 9 forming disengageable clutches.
rotor to rotor, said rotors normally lying in axially con
It will be understood that in such an arrangement a rota
verged relation in which at least one of said contacts, on
tion of one of the rotors with respect to the adjacent rotor
one rotor, may engage at least one of said contacts on
or end member always produces a concurrent relative
the facing side of ‘an adjacent rotor, each of said rotors
movement in axial direction.
being moveable angularly relative to at least one adjacent
The sides of the rotors 3, 4 and 5 facing each other are 55 rotor to change the switching position of at least some
provided with contacts, uniformly distributed in circum
of said contacts, and means responsive to angular move
ferential direction; these contacts are provided on surface
ment of any of said rotors relative to an adjacent rotor
portions of the rotor sides which are axially set back with
to axially separate the relatively moving adjacent rotors
respect to the serrations 9. Thus, the two sides of the
and thereby reduce the contact pressure of said coacting
60
rotor 4 carry each a series of ?xed contacts 10 while the
wiping contacts.
sides of the rotors 3 and 5 facing the rotor 4 carry each a
2. A permutation switch comprising a supporting shaft,
series of resilient contact tongues 11, cooperating with the
a plurality of relatively rotatable and relatively axially
?xed contacts in the manner of wiping contacts. It will
movable rotors mounted side by side on said shaft, coact
be understood that the spacing of the contacts and the
ing wiping contacts on the sides of said rotors facing each
65
pitch of the serrations 9 are so adjusted with respect to
other, the sides of adjacent rotors facing each other being
each other that the rotors can be advanced step by step
provided with intermeshing serrations, and resilient means
through an angular movement corresponding to the de
acting on said rotors for yieldably holding said rotors in
sired‘ change of contact.
an axially converged relation in which the serrations of
Each rotor 3, 4 and 5 is provided on its circumference
adjacent rotors are in intermeshing engagement and in
70
with a gear rim 12. These gear rims 12 mesh each with a
which at least one of said contacts, on one rotor, may
pinion 13. The pinions are mounted on a shaft 14 and
engage at least one of said contacts, on the facing side of
3,093,714
4
ing them in axially converged relation in which the
an adjacent rotor, each of said rotors being rotatable
relative to at least one adjacent rotor to change the switch
ing position of at least some of said contacts, whereby
upon rotation of any of said rotors relative to an adjacent
serrations of adjacent rotors are in intermeshing en
gagement and in which at least one of said contacts,
on one rotor, may engage at least one of said con
rotor to cause relative axial movement of the relatively 5
tacts on the facing side of an adjacent rotor,
a peripheral ring gear on each of said rotors,
said coacting wiping contacts as their switching positions
and a plurality of independently rotatable pinions, each
meshing with one of said ring gears, for selectively
rotating rotors whereby to reduce the contact pressure of
are changed.
3. A permutation switch as claimed in claim 1, com
rotating said rotors one relative to another and
prising means for controlling the switching of said rotors,
thereby changing the switching position of at least
said means being operable to turn one of said rotors rela
tively to another of them and at the same time to cause
some of said contacts,
said serrations de?ning cooperating cam surfaces which
the remaining rotors to turn with said one rotor.
upon such relative rotation cause axial separation of
4. A permutation switch comprising:
a supporting shaft,
15
at least three rotors rotatably mounted side by side and
axially slidable on said shaft,
coacting wiping contacts on the sides of said rotors
facing each other,
said facing sides of adjacent rotors being provided
with intermeshing serrations,
resilient means acting on said rotors for yieldingly hold
adjacent relatively rotating rotors whereby to reduce
the contact pressure of said coacting wiping contacts
as their switching positions are changed.
References Cited in the ?le of this patent
UNITED STATES PATENTS
20
1,853,243
2,810,797
Thor ________________ __ Apr. 12, 1932
Gulnick ______________ __ Oct. 22, 1957
Документ
Категория
Без категории
Просмотров
0
Размер файла
271 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа