US2474233A - Selector brush - Google Patents

Selector brush Download PDF

Info

Publication number
US2474233A
US2474233A US579368A US57936845A US2474233A US 2474233 A US2474233 A US 2474233A US 579368 A US579368 A US 579368A US 57936845 A US57936845 A US 57936845A US 2474233 A US2474233 A US 2474233A
Authority
US
United States
Prior art keywords
contact
brush
pins
guide
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US579368A
Other languages
English (en)
Inventor
Deakin Gerald
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE470590D priority Critical patent/BE470590A/xx
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to US579368A priority patent/US2474233A/en
Priority to GB2540/46A priority patent/GB607096A/en
Priority to CH256360D priority patent/CH256360A/de
Priority to ES0172655A priority patent/ES172655A1/es
Priority to FR922708D priority patent/FR922708A/fr
Application granted granted Critical
Publication of US2474233A publication Critical patent/US2474233A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H63/00—Details of electrically-operated selector switches
    • H01H63/02—Contacts; Wipers; Connections thereto
    • H01H63/04—Contact-making or contact-breaking wipers; Position indicators therefor

Definitions

  • My invention ⁇ relates to electricall contact brushes and moreparticularly; although noteX- clusively, to brushes for" selectorl switches for telecommunicationA4 systems:
  • a contact brush conn'nises'-ak pair Qf generally parallel brushspringmembers xedto afsupporting means at-'one ⁇ endI and provided "adj acent the other end with i inwardly offsetvportions or shoes having contact surfaces-forwiping'overtlie con-v tact1 terminals or I' pins-fof i aJ'ba/nkf.
  • Sue-h 'inwardly offset' portions' provide at ⁇ tiie outer faces ofthe springmemler, transverseL recesses over which are fixed lblocksI a orplates of E'insulatiifig material.
  • the device of'thel present invention ihasfmany' advantages.: No. insulating material will.- rubon that'part'of the pin non .which .the brush shoe rides.
  • the guide issadjac'entftozthefbrushashoe sorthat no inward l bending.. of :theffbrushshoe: will f cause thefinsulatorzinsteadiiofitheabrush shoe to rubor: the pins: Theashoezi willftrayei .1 from-i pinA toy pin withzno ⁇ orrvery'flittledrop betweenfpi-ns; thereby noti onlyxreducingfivibrationto minimum but also increasing? the-L useful rubbing surface to substantiallyf or" 90;:- per centr. of the; distances between the axes of adjacent pins:-
  • Fig. 2v is van:elevation as seen from the right of lFig. 1;.
  • Fig. ⁇ Brisa viewfioi:the-structurerof ⁇ Fig. 1 as' Fig.l 6 isasection cnthelineeSr-Eioflig 4; and: ⁇
  • Iable. material such as phosphorl bronze.
  • Fig: '7 is a section' taken on the-line 'i-'l of Fig; 4:
  • My invention is disclosed'as applied to a flattype selector-switch4 of the ⁇ kind disclosed in 4Patent No: 2,330,8f12 ⁇ is'suedtomelon October 5,v 1943.
  • Figs. 1, 2; 3 and lithe brush unit comprises a strip I0 of suitable material-such as a laminated phenolic sheet adapted-to be secured to a brush carriage'in -anyvsuitable' manner.
  • suitable material such as a laminated phenolic sheet adapted-to be secured to a brush carriage'in -anyvsuitable' manner.
  • Eyelets Il are two phosphor-bronze' brushsprings ⁇ I2.V
  • the upperv portions offthebrush springs il 2S are formed with' lateral* extensions I3Yv ⁇ forl wipingY along a feedrfb'ar (not shown);
  • The'freeends'v of the brush springs IZZare provided 'i with laterally onv inwardly displaced parts constituting brush-shoes I4fhaving contactsuzw faces'- l 5 I atitheinnery sides thereof .i and 'adapted to wipeover contactpinsf I6' linearly arranged.
  • These pinst may be: made of anhard metal v such as phosphorvbronzef.orstainlesssteel. At one edge each lbrush shoezlll is substantially in alignment with the edgesofthe!
  • the brush may engage two successive pins I6 at one time although being in electrical contact with only one pin I6 at a time.
  • each guide I'I is provided by a block or plate 20 of insulating material such as laminated phenolic material, placed across the recess at the back of the shoe I4 and secured to the springs I2 by suitable means such as eyelets 2
  • Each guide I'I may be made of a metallic strip preferably of phosphor bronze deformed to provide a flat body 22 secured to insulating plate 20 at its outer face by suitable means such as an eyelet 23, a flat portion 24 inclined inwardly and rearwardly from the outer edge of body 22 and a short ilat portion 25 extending rearwardly in alignment with shoe I4 but spaced therefrom.
  • the insulating plate 20 is cut away to receive the downwardly and rearwardly extending part 24 of the guide I9.
  • a spring I2 will always be guided by at least one pin I6, even during the period when contact has been broken with one contact pin I6 and has not been established with the next pin.
  • An electrical contact brush for a selector switch comprising a metallic spring member having a contact surface for successive engagement with a series of stationary terminals, a metallic guide member mounted on said spring member in alignment with said surface and spaced from the forward edge thereof in the direction of movement of said brush, means for electrically insulating said guide member from said spring, said contact surface being shorter in the direction of movement of said brush than the space between adjacent terminals and said guide member extending forwardly in the direction of movement of said brush to engage a terminal before said spring contact surface leaves the succeeding terminal, and means to urge said contact surface towards said terminal.
  • An electrical contact brush comprising a metallic spring member having an electrical contact surface, supporting means for said spring member, and guiding means mounted on said spring member comprising a block of insulating material secured to said spring member at the side opposite to said contact face and a metallic guide secured to such insulating block and having a part substantially parallel to said contact surface and projecting'beyond the lateral edge of said spring member, an inclined part extending rearwardly and inwardly and an inner part extending rearwardly but spaced from the forward edge of said spring member.
  • An electrical contact brush for a selector switch comprising a metallic spring member having a contact surface for successive engagement with a series of stationary terminals and a metallic guide member mounted on said spring member and in alignment therewith but electrically insulated therefrom, said guide member comprising a strip having a part extending across the back of said spring opposite said contact surface and substantially in advance of said spring, a second part extending rearwardly and inwardly to the path of said inner face and a third part extending rearwardly with its inner surface substantially in the path of said contact surface.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Multi-Conductor Connections (AREA)
US579368A 1945-02-23 1945-02-23 Selector brush Expired - Lifetime US2474233A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE470590D BE470590A (en(2012)) 1945-02-23
US579368A US2474233A (en) 1945-02-23 1945-02-23 Selector brush
GB2540/46A GB607096A (en) 1945-02-23 1946-01-25 "selector brush"
CH256360D CH256360A (de) 1945-02-23 1946-02-22 Schaltarm an einem elektrischen Schalter.
ES0172655A ES172655A1 (es) 1945-02-23 1946-02-22 Mejoras en escobillas de selector
FR922708D FR922708A (fr) 1945-02-23 1946-02-23 Balais de sélecteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US579368A US2474233A (en) 1945-02-23 1945-02-23 Selector brush

Publications (1)

Publication Number Publication Date
US2474233A true US2474233A (en) 1949-06-28

Family

ID=24316615

Family Applications (1)

Application Number Title Priority Date Filing Date
US579368A Expired - Lifetime US2474233A (en) 1945-02-23 1945-02-23 Selector brush

Country Status (6)

Country Link
US (1) US2474233A (en(2012))
BE (1) BE470590A (en(2012))
CH (1) CH256360A (en(2012))
ES (1) ES172655A1 (en(2012))
FR (1) FR922708A (en(2012))
GB (1) GB607096A (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799755A (en) * 1954-08-24 1957-07-16 Gen Electric Co Ltd Contact wiper assemblies for electromagnetic step-by-step switches
US2917601A (en) * 1957-09-16 1959-12-15 Northrop Corp Printed circuit relay

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285657A (en) * 1940-12-26 1942-06-09 Bell Telephone Labor Inc Brush carriage for selector switches
US2343100A (en) * 1942-10-16 1944-02-29 Bell Telephone Labor Inc Panel selector contact shoe
US2347727A (en) * 1942-10-16 1944-05-02 Bell Telephone Labor Inc Panel selector contact shoe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285657A (en) * 1940-12-26 1942-06-09 Bell Telephone Labor Inc Brush carriage for selector switches
US2343100A (en) * 1942-10-16 1944-02-29 Bell Telephone Labor Inc Panel selector contact shoe
US2347727A (en) * 1942-10-16 1944-05-02 Bell Telephone Labor Inc Panel selector contact shoe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799755A (en) * 1954-08-24 1957-07-16 Gen Electric Co Ltd Contact wiper assemblies for electromagnetic step-by-step switches
US2917601A (en) * 1957-09-16 1959-12-15 Northrop Corp Printed circuit relay

Also Published As

Publication number Publication date
ES172655A1 (es) 1946-03-16
GB607096A (en) 1948-08-25
CH256360A (de) 1948-08-15
FR922708A (fr) 1947-06-17
BE470590A (en(2012)) 1947-01-17

Similar Documents

Publication Publication Date Title
GB1417517A (en) Butt-contact speed control trigger switch
US2474233A (en) Selector brush
US2254729A (en) Electric switch
US2543036A (en) Electrical contact spring assembly
US1740535A (en) Electric switch
US3828300A (en) Terminals of electrical equipment and ribbon-like leads
US3225149A (en) Programming system-cable tape type switch with deflectable spring contact means
US3632916A (en) Electrical switch with selective blocking action
US2184359A (en) Combined switch and plug receptacle
US3087039A (en) Electrical contact bridging assembly
US1493559A (en) Smap switch for plugs
US2530354A (en) Multicontact connector
US3290463A (en) Trigger-operated electric switch mechanism
US2497306A (en) Electric switch
US1971212A (en) Electric snap switch
US2525408A (en) Electrical contact for switching devices
US3187119A (en) Switch contact structure with embedded spring biasing means
US3405243A (en) Actuating lever for a switch
US1868482A (en) Electric switch
US1516415A (en) Attachment plug
USRE17897E (en) Caul bramming
US2453778A (en) Electrical contacting equipment
US1636678A (en) Push and pull switch
US2057865A (en) Switch bank
US3168634A (en) Electrical contact device