US3080457A - Multiple switching device for automatic telephone systems - Google Patents

Multiple switching device for automatic telephone systems Download PDF

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Publication number
US3080457A
US3080457A US836989A US83698959A US3080457A US 3080457 A US3080457 A US 3080457A US 836989 A US836989 A US 836989A US 83698959 A US83698959 A US 83698959A US 3080457 A US3080457 A US 3080457A
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US
United States
Prior art keywords
ring
groups
switch contacts
plate
bridging
Prior art date
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Expired - Lifetime
Application number
US836989A
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English (en)
Inventor
Jansson Tage Axel
Ekwall Sven Sture
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

Definitions

  • dials for number selection in automatic telephone systems. It is, however, desirable to replace the dials by key sets, because the number selection is carried out much more rapidly and more comfortably by means of push buttons.
  • the dials are normally provided with a cont-act spring group that is actuated each time the dial is turned off the home position. In keysets it is desirable to provide a corresponding contact spring group that is actuated each time any of the push buttons is oppressed.
  • the object of the present invention is to solve this problem by simple means, requiring reduced space at such key sets where the push buttons are placed in a closed circle and designed to be displaceable in holes in a direction perpendicular to a front plate, so that the key set can be mounted in a space designed for a dial.
  • FIG. 1 shows one embodiment of a key set seen from the back side
  • FIG. 2 shows a section AA of FIG. 1
  • FIG. 3 shows a perspective view of another embodiment of the invenn.
  • two round plates are provided, a front plate 1 and a mounting plate 10, of which at least the latter is made of an electrically nonconductive material.
  • the plates have space enough for a plurality of at least 10 push buttons 9, of which three are shown with dotted lines in FIG. 1 and one in FIG. 2.
  • the plates are held together by means that are unessential in relation to the invention and, therefore, incompletely shown in the figure, for instance a centrally located body 11.
  • contacts -4, 5, 7, 8, etc. are provided as well as three posts 14 each one carrying a spring 13.
  • the springs 13 press a ring 2 against the lower side of the plate 10.
  • the ring 2 is made of insulating material or covered with a non-conducting material.
  • a contact plate 3 is provided that with the key set in inactive position electrically connects the two contacts 4 and 5 with each other.
  • the push button 9 is made of insulating material and is displaceably supported by the plates 1 and 10 and normally held in inactive position by a spring 12.
  • the spring 12 rests against a metal disc 6, that in turn rests against the contact 7.
  • the disc 6 is loosely mounted on the lower, narrower part of the push button 9 and rests in inactive position against an annular support 15 fixed to the push button 9.
  • FIG. 3 shows a perspective view of the second embodiment of the invention.
  • the ring 2 is held in inactive position by means of two springs 13 each mounted on a post 14 which posts are as before fixed to the plate 10.
  • a contact wire 16 is placed, that by means of the respective springs 13 is pressed towards the ring 2.
  • the wire rests with its end portions against two contacts 4 and 5, which are thus electrical-1y connected together by means of the wire.
  • two break contacts exist at each wire and by means of an adequate wiring all the breaking points are connected in series.
  • one or two of the breaking points are opened, so that the circuit is interrupted.
  • a multiple switching device for use as a dialing device in an automatic telephone system, said switching device comprising a mounting plate and a plurality of switches mounted on said plate in circular arrangement circumferentially spaced from each other, each of said switches including several switch contacts mounted on said plate electrically insulated therefrom and protruding from one side thereof, a conductive bridge member mounted yieldably movable between contact bridging and non-bridging positions and a movable actuating member coacting with said bridge member to change the position thereof in reference to the switch contacts of the switch by displacement of the respective actuating member; groups of further switch contacts mounted on said mounting plate protruding from the other side thereof and disposed groupwise in concentric arrangement with said switches electrically insulated from the plate, a conductive bridge member for each of said groups mounted yieldably and pivotally between contact bridging and nonbridging positions, and an insulation ring disposed concentric with said switches and said groups of switch contacts and yieldably mounted in reference to the bridge members for said groups of switch contacts to control the position of said groups bridge members by
  • a switching device according to claim 1 wherein said plate is in the form of an annular plate, said switches being circumferentially spaced on said annular plate and said groups of further switch contacts being disposed intermediate said switches and equidistant from one another.
  • a switching device according to claim 1 wherein the switch contacts of each switch are of unequal height in reference to the mounting plate and the bridge member of each switch is mounted tilt-able in reference to the re- 'speetive switch contacts and is yieldably urged into an engagement with one of said switch contacts, displacement of said actuating member changing the angle of tilt of the respective bridge member in respect to the switch contacts associated therewith to move the bridging mem her into engagement'with at least a second one of the respective switch contacts.
  • each of said actuating'members comprises a push button longitudinally displaceable in reference to said mounting plate, each of said push buttons being in engagement with the bridge member of the respective switch and said insulation ring to control the position of both the respective bridge member and the insulation ring by displacement of the push button from an initial position.
  • a switching device according to claim 4 wherein a spring means for each of said push buttons urges the same into'its initial position.
  • a switching device according to claim 1 wherein said mounting plate is in the form of an annular plate, said switches being circumferentially spaced on said annular plate and said groups of further switch contacts being disposed intermediate said switches and equidistant one from another, and wherein spring means engage said ring at equidistant points to urge the same into a position in which the bridge members controlled by said ring occupy a predetermined position in reference to the switch con- 10 t-acts in said groups.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
US836989A 1958-11-03 1959-08-31 Multiple switching device for automatic telephone systems Expired - Lifetime US3080457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1015958 1958-11-03

Publications (1)

Publication Number Publication Date
US3080457A true US3080457A (en) 1963-03-05

Family

ID=20291803

Family Applications (1)

Application Number Title Priority Date Filing Date
US836989A Expired - Lifetime US3080457A (en) 1958-11-03 1959-08-31 Multiple switching device for automatic telephone systems

Country Status (6)

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US (1) US3080457A (en(2012))
BE (1) BE583117A (en(2012))
DE (1) DE1101510B (en(2012))
FR (1) FR1237655A (en(2012))
GB (1) GB921625A (en(2012))
NL (1) NL242116A (en(2012))

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210484A (en) * 1962-04-20 1965-10-05 Automatic Elect Lab Push button device
US3541519A (en) * 1966-11-07 1970-11-17 Thomas Raymond Thompson Data capture
US3641286A (en) * 1970-10-05 1972-02-08 Selectro Corp Electromechanical keyboard independently operated switch mechanism with improved conductive resilient actuating means
US3705276A (en) * 1971-05-20 1972-12-05 Chomerics Inc Keyboard switch assembly with conductive plastic contactor and actuator spring sleeve biasing means
US4042793A (en) * 1975-12-29 1977-08-16 Telephone Electronics Corporation Telephone mouthpiece keyboard
US4071715A (en) * 1975-12-17 1978-01-31 Societe Des Telephones Picart Lebas Push-button switch for a multifrequency dialling telephone set
US4291201A (en) * 1979-04-09 1981-09-22 American Telecommunications Corporation Push-button dial assembly for telephones
USD275195S (en) 1981-07-30 1984-08-21 Telecommunications Radioelectriques & Telephoniques Telephone
CN109728347A (zh) * 2017-10-30 2019-05-07 中山天贸电池有限公司 一种锂离子电池分条的极片下卷装置及使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195819B (de) * 1963-09-04 1965-07-01 Holzer Patent Ag Tastenwaehler mit Drucktasten fuer Fernmelde-Anlagen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634967A (en) * 1922-09-23 1927-07-05 Raymond E Vaughan Transmitter
US2748205A (en) * 1951-12-14 1956-05-29 Bryant Electric Co Switch
US2951916A (en) * 1956-06-28 1960-09-06 Philips Corp Electric contact device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE470519A (en(2012)) * 1946-01-26
NL73400C (en(2012)) * 1948-02-05
DE1016762B (de) * 1954-07-12 1957-10-03 Phil Habil Oskar Vierling Dr Vorrichtung zum Aussenden von Reihen elektrischer Impulse fuer Fernmelde-, insbesondere Fernsprechanlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634967A (en) * 1922-09-23 1927-07-05 Raymond E Vaughan Transmitter
US2748205A (en) * 1951-12-14 1956-05-29 Bryant Electric Co Switch
US2951916A (en) * 1956-06-28 1960-09-06 Philips Corp Electric contact device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210484A (en) * 1962-04-20 1965-10-05 Automatic Elect Lab Push button device
US3541519A (en) * 1966-11-07 1970-11-17 Thomas Raymond Thompson Data capture
US3641286A (en) * 1970-10-05 1972-02-08 Selectro Corp Electromechanical keyboard independently operated switch mechanism with improved conductive resilient actuating means
US3705276A (en) * 1971-05-20 1972-12-05 Chomerics Inc Keyboard switch assembly with conductive plastic contactor and actuator spring sleeve biasing means
US4071715A (en) * 1975-12-17 1978-01-31 Societe Des Telephones Picart Lebas Push-button switch for a multifrequency dialling telephone set
US4042793A (en) * 1975-12-29 1977-08-16 Telephone Electronics Corporation Telephone mouthpiece keyboard
US4291201A (en) * 1979-04-09 1981-09-22 American Telecommunications Corporation Push-button dial assembly for telephones
USD275195S (en) 1981-07-30 1984-08-21 Telecommunications Radioelectriques & Telephoniques Telephone
CN109728347A (zh) * 2017-10-30 2019-05-07 中山天贸电池有限公司 一种锂离子电池分条的极片下卷装置及使用方法

Also Published As

Publication number Publication date
DE1101510B (de) 1961-03-09
FR1237655A (fr) 1960-07-29
NL242116A (en(2012))
BE583117A (fr) 1960-01-18
GB921625A (en) 1963-03-20

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