US2522715A - Rotary switch - Google Patents

Rotary switch Download PDF

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Publication number
US2522715A
US2522715A US2904A US290448A US2522715A US 2522715 A US2522715 A US 2522715A US 2904 A US2904 A US 2904A US 290448 A US290448 A US 290448A US 2522715 A US2522715 A US 2522715A
Authority
US
United States
Prior art keywords
switch
spring
shaft
spindle
contacts
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
US2904A
Other languages
English (en)
Inventor
Kenneth W Graybill
Sengebusch Hans
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 BE471881D priority Critical patent/BE471881A/xx
Priority to NLAANVRAGE7710200,A priority patent/NL171847B/xx
Priority to FR943077D priority patent/FR943077A/fr
Priority to GB17051/49A priority patent/GB642640A/en
Priority to GB7092/47A priority patent/GB642586A/en
Application filed by Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Priority to US2905A priority patent/US2641050A/en
Priority to US2904A priority patent/US2522715A/en
Application granted granted Critical
Publication of US2522715A publication Critical patent/US2522715A/en
Priority to US248897A priority patent/US2710896A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/06—Rotary switches, i.e. having angularly movable wipers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion

Definitions

  • the present invention relates in general to electrical switches and more particularly to rtary switches of the step-by-step type, and is a division of our prior application Serial No. 654,556, filed March 15, 1946.
  • Another object is to provide an improved rotary switch which will be simple and economical to construct, but which will be very rugged so that it has a long operating life.
  • a further object is to simplify the assembling of such a switch by reducing the amount of manual adjustment needed to bring the parts thereof into their correct relationship.
  • Another feature is the provision of a novel arrangement for supporting one end of the wiper shaft. whereby that end may be freed from its support easily and without the use of tools.
  • Another feature is the rovision, in a reverse drive rotary switch, of a novel relationship between the driving spring and the electromagnet for tensioning same, whereby upon deenergization of the eleetromagnet the spring is capable of delivering a greater amount of energy to advance the switch wipers.
  • a further feature resides in the provision of an improved arrangement for positively halting the switch wipers in the correct position at the end of each step.
  • Fig. 1 is a front elevation of the switch according to the invention, certain wipers and bank contacts having been omitted for the sake of clarity,
  • Figs. 2 and 3 are side elevations showing opposite sides of the switch
  • Fig. 4 is a fragmentary view of the bottom of the switch
  • Fig. 5 is an enlarged view of the wiper assemly.
  • Fig. 6 is a cross-sectional view taken along the line 6-6 of Fig. 5,
  • Fig. 6A is a fragmentary cross-sectional view z of the wiper assembly showing a'modifled construction
  • V Figs. 7, 7A and 7B are greatly enlarged views of a part of the switch mechanism showing-successive positions occupied thereby during movement of the switch.
  • the frame is arcuate in shape and carries a bank of sta tionary contacts I3 which are arranged in levels or rows. There are twenty-five contacts in each level, and adjacent levels are separated from one another by insulators It and spacers I 5. Ten levels are shown, but it will be understood that any desired number may be arrangedas illustrated, these being secured to the frameby elongated screws it which pass through suitable holes in the frame and corresponding holes in the insulators I4 and spacers l5. As indicated by dotted lines in Fig. 3, the individual contacts are so shaped as to avoid being short-circuited by these screws.
  • Each contact in the bank is provided at its outer end with a flared soldering lug and is disposed along a line radial to the axis of the wiper assembly now to be described.
  • This assembly includes a stationary spindle or shaft ll one end of which is rigidly secured to the switch frame by means of a flanged stud I8 and a nut l9.
  • the stud is threaded on the inside to receive shaft l1 and is threaded on the outside to receive nut iii, the latter being tightened down after the stud has been inserted in a slot 2
  • a rotatable hollow shaft or sleeve member 22 having integral therewith or rigidly aillxed thereto) a toothed ratchet wheel 23.
  • a square nut 20 screwed onthe end of spindle i1 prevents axial movement of the rotary member.
  • Carried by sleeve 22 but insulated therefrom by a tubular insulator 24 are a. series of disc-like wiper-carrying hubs 28, a spacer 26 and a drum 21; these are separated from one another by insulating washers 28 and are tightened down against the toothed wheel by means of a nut 29 so that they are rigid with respect to the rotary member.
  • a shallow internal recess ii is provided in one face of each wiper-carrying hub so that the distance along the surface of the tubular insulator 24 from one hub to the adjacent hub is increased, with a corresponding increase in leakage resistance between the two.
  • Each hub also has two oppositely disposed peripheral recesses 32 in which are seated a pair of double-en .ed wiper blades 33 shaped as illust 'ated in Fig. 5. These blades are rigidly secured to their associated hubs as by spot welding, and it will be noted that the recesses 32 in which they are seated are slightly deeper than the thickness of the blades themselves so that variations in the thickness of the blades due to ordinary manufacturing tolerances will not affect the spacing of the adjacent ones of the hubs.
  • Fig. 6A An alternative mode of construction is shown in Fig. 6A. According to this, no nut is provided on the end of spindle H to prevent axial movement of the hollow shaft 22. Instead, spring 34' is provided with a bushing 20' which it is tcnsioned to press against the end of the hollow shaft to prevent endwise displacement thereof. As indicated, there is a circular recess in the bushing which is adapted to receive the end of spindle I! and maintain same centered with respect to the bank contacts. The spring 34' may be deflected in the same way as that in Fig. 6, to free the end of the wiper assembly.
  • the wipers are moved in steps under control of an elcctromagnet 4
  • a portion of the frame is bent over to form an L-shaped heel piece for this magnet.
  • pivotal magnetic armature 43 which is supported on the frame by means of a non-magnetic yok 44 and a bearing pin 45. said yoke being rigidly secured to the heel piece by means of two screws as shown.
  • the armature is provided with an elongated lever arm 46 having at its extreme end a toothed portion 41 adapted to mesh with the teeth on wheel 23.
  • a heavy compression spring the two ends of which are coiled about a pair of flanged centermg studs 52 and 53. urges the lever arm toward wheel 23.
  • the stud 52 is provided with a threaded shank which screws into a tapped hole in an arm 54 on the switch frame; this permits the stud to be advanced or retracted to change the spring tension on m 46, it being understood that unintended changes in such spring tension are prevented by means of a lock-nut 55 which is tightened down after the tension has been properly adjusted.
  • a pawl 51 Pivotally mounted on the lever arm 45 at a point 56 is a pawl 51 which is urged toward the toothed wheel 23 by alight coiled spring 58.
  • When the electromagnet 4
  • a flat spring 59 secured to the contact bank prevents retrograde movement of the wiper assembly during this operation.
  • spring 5! quickly restores lever arm 46 to normal causing pawl 51 to advance the toothed wheel and the associated wipers toward their next contact position.
  • the toothed portion of the lever arm once more meshes with the teeth of wheel 23 so that the wipers (which now are moving very rapidly) will not be carried beyond that position due to acquired momentum.
  • Figs. '7, 7A and TB show these elements in three successive positions near the end of the lever arms return stroke.
  • a particular tooth on each element is identified by a dot in all three figures, making it easy to understand the relative movement of the two elements.
  • the toothed portion 41 is just outside the path of the teeth on wheel 23 and both are moving in the direction indicated by their respective arrows.
  • Fig. 7A shows how the two sets of teeth clear one another as they begin to mesh, while Fig. 7B illustrates their final position, wherein rotation of wheel 23 is halted by the toothed portion of the lever arm.
  • a pair of divergent brushes 60 is provided for each pair of wiper blades. These are mounted on the contact bank as shown in Figs. 1 and 3 and make electrical contact with their associated wipers in all positions thereof, engaging same as shown in Fig. 5.
  • the armature 43 is provided with a second lever arm Bl which operates a set of auxiliary contacts 82. In the drawings, this contact set is illustrated as a single pair of contacts which are separated upon the energization of the electromagnet, but it will be appreciated that any desired other set of contacts might be employed.
  • a second auxiliary set of contacts 63 are mounted on the contact bank by means of a detachable mounting plate 84; these are operated by a pair of pins 85 rigidly affixed to the drum 21 at two diametrically opposite points thereon.
  • pins 65 are so located as to operate the associated contact set when the wipers occupy their home position, as shown in Fig. 3.
  • a hollow wiper-carrying shaft rotatably supported upon an elongated spindle, means supporting one end of said spindle, and a flat spring having an opening which fits over the other end of said spindle so that said spring presses against said hollow shaft to prevent axial movement thereof, said spring being the sole support of said other end of said spindle and being yieldable axially thereof to free said other end thereof.
  • a hollow wiper-carrying shaft rotatably supported upon an elongated spindle, means supporting one end of said spindle, means including a member screwed on the other end of said spindle for preventing axial movement of said hollow shaft on said spindle, and an element being the sole support of said other end of said spindle and locking said member in 6 place thereon, said element yieldable axially of said spindle to unlock said member.
  • a rotatable wiper-carrying shaft means at each end of said shaft for supporting same, the sole supporting means at one end of said shaft comprising a flat spring member normally disposed in a plane perpendicular to the axis of said shaft and yieldable axially of said shaft to free said one end thereof, an index mark on said spring member, adrum connected to said shaft and rotated thereby, said drum having different markings adapted to register with said index mark in different angular positions of said shaft.
  • a rotary switch as claimed in claim 3 including a pair of projecting members rigidly affixed to said drum at two diametrically opposite points thereon, and auxiliary contacts associated with said switch and actuated by one of said pair of said projecting members when said shaft has assumed a certain first angular position, said contacts actuated by the other projecting member of said pair when said shaft has assumed a 4 certain second angular position.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Telephone Set Structure (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Transmission Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
US2904A 1946-03-15 1948-01-17 Rotary switch Expired - Lifetime US2522715A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NLAANVRAGE7710200,A NL171847B (nl) 1946-03-15 Geluidsopneem- en weergeefapparaat.
BE471881D BE471881A (en, 2012) 1946-03-15
FR943077D FR943077A (fr) 1946-03-15 1947-03-12 Perfectionnements aux commutateurs automatiques applicables notamment dans les systèmes téléphoniques ou systèmes analogues
GB7092/47A GB642586A (en) 1946-03-15 1947-03-14 Improvements in or relating to automatic switches suitable for use in telephone or like systems
GB17051/49A GB642640A (en) 1946-03-15 1947-03-14 Improvements in or relating to automatic switches suitable for use in telephone or like systems
US2905A US2641050A (en) 1946-03-15 1948-01-17 Method of making rotary switch wipers
US2904A US2522715A (en) 1946-03-15 1948-01-17 Rotary switch
US248897A US2710896A (en) 1946-03-15 1951-09-29 Rotary stepping switches

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US65455646A 1946-03-15 1946-03-15
US2905A US2641050A (en) 1946-03-15 1948-01-17 Method of making rotary switch wipers
US2904A US2522715A (en) 1946-03-15 1948-01-17 Rotary switch
US248897A US2710896A (en) 1946-03-15 1951-09-29 Rotary stepping switches

Publications (1)

Publication Number Publication Date
US2522715A true US2522715A (en) 1950-09-19

Family

ID=27485221

Family Applications (3)

Application Number Title Priority Date Filing Date
US2904A Expired - Lifetime US2522715A (en) 1946-03-15 1948-01-17 Rotary switch
US2905A Expired - Lifetime US2641050A (en) 1946-03-15 1948-01-17 Method of making rotary switch wipers
US248897A Expired - Lifetime US2710896A (en) 1946-03-15 1951-09-29 Rotary stepping switches

Family Applications After (2)

Application Number Title Priority Date Filing Date
US2905A Expired - Lifetime US2641050A (en) 1946-03-15 1948-01-17 Method of making rotary switch wipers
US248897A Expired - Lifetime US2710896A (en) 1946-03-15 1951-09-29 Rotary stepping switches

Country Status (5)

Country Link
US (3) US2522715A (en, 2012)
BE (1) BE471881A (en, 2012)
FR (1) FR943077A (en, 2012)
GB (2) GB642640A (en, 2012)
NL (1) NL171847B (en, 2012)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641050A (en) * 1946-03-15 1953-06-09 Automatic Elect Lab Method of making rotary switch wipers
US2792479A (en) * 1953-12-09 1957-05-14 Gintovt Henry Cycle control switch
US2799755A (en) * 1954-08-24 1957-07-16 Gen Electric Co Ltd Contact wiper assemblies for electromagnetic step-by-step switches
US2885540A (en) * 1953-02-21 1959-05-05 Philips Corp Radio-telecommnucation equipment for simplex or duplex traffic with uniselector switch
US2948013A (en) * 1955-09-07 1960-08-09 Blaw Knox Co Program control for soot blowers
US3238319A (en) * 1961-09-13 1966-03-01 American Mach & Foundry Switch with axially spaced angularly offset rotary wiper contacts
US20060244559A1 (en) * 2004-01-20 2006-11-02 E.G.O. Elektro-Geraetebau Gmbh Magnetically activated contacting device

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750480A (en) * 1953-01-29 1956-06-12 Charles B Freeman Circuit control device
US2914687A (en) * 1953-07-30 1959-11-24 Cons Electrodynamics Corp Stepping motor
US2743335A (en) * 1953-09-04 1956-04-24 Gen Motors Corp Circuit breaker
US2906838A (en) * 1955-03-04 1959-09-29 Burroughs Corp Program scanning apparatus
US3086096A (en) * 1957-02-05 1963-04-16 United Electrodynamics Inc Stepping switch
US3014193A (en) * 1958-06-26 1961-12-19 Electro Tec Corp Electrical slip ring and support
US3093713A (en) * 1959-11-06 1963-06-11 Grigsby Company Inc Electrical component assembly
US3097278A (en) * 1960-04-13 1963-07-09 Singer Mfg Co Rotary solenoid actuated switches
US3167852A (en) * 1960-10-26 1965-02-02 Standard Gribsby Method of making an electrical switch
US3196223A (en) * 1960-12-06 1965-07-20 Robert E Hartsock Selector switch with scanning motion translation means
US3248488A (en) * 1961-02-20 1966-04-26 Globe Union Inc Switch construction and contact clip mounting arrangement therefor
US3106626A (en) * 1961-10-11 1963-10-08 Automatic Elect Lab Stepping switch
US3233066A (en) * 1963-02-26 1966-02-01 Cons Electronics Ind Low-torque stepper switch
US3267225A (en) * 1965-09-03 1966-08-16 Automatic Elect Lab Rotary switch shaft and support structure
US3319017A (en) * 1965-09-30 1967-05-09 Cecil S Adams Switch control apparatus with improved brush contact means

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB244458A (en) * 1924-12-09 1927-03-07 Automatic Telephone Mfg Co Ltd Improvements in or relating to automatic switches for use in telephone or like systems
GB358293A (en) * 1930-10-15 1931-10-08 Coventry Autom Telephones Ltd Improvements in or relating to electromagnetic step-by-step switches
US2194051A (en) * 1935-09-26 1940-03-19 Siemens Ag Telephone switch

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US668389A (en) * 1899-11-23 1901-02-19 Charles M Gould Electric switch.
US707505A (en) * 1901-04-15 1902-08-19 Sears B Condit Jr Electrical switch.
US1040940A (en) * 1911-05-10 1912-10-08 American Railway Signal Company Art of railway signaling.
US1246308A (en) * 1913-01-27 1917-11-13 Aron Elek Citaetszaehlerfabrik G M B H H Process of manufacturing electric measuring instruments.
US1212318A (en) * 1916-05-17 1917-01-16 Plume & Atwood Mfg Company Fixture-loop.
US1794888A (en) * 1923-03-14 1931-03-03 Automatic Electric Inc Automatic switch
US1595107A (en) * 1924-06-12 1926-08-10 Western Electric Co Composite article and method of making the same
GB250996A (en) * 1925-01-14 1926-04-14 Automatic Telephone Mfg Co Ltd Improvements in or relating to rotary distributors for use in telegraph or like systems
GB264616A (en) * 1925-11-06 1927-01-27 Automatic Telephone Mfg Co Ltd Improvements in or relating to switching apparatus for telephone systems
US1707175A (en) * 1927-03-05 1929-03-26 Irene L Platt Dirigible spotlight and traffic signal
US1768394A (en) * 1928-10-31 1930-06-24 Western Electric Co Selector switch
US1886059A (en) * 1929-11-06 1932-11-01 Int Standard Electric Corp Automatic switching mechanism
GB391072A (en) * 1932-12-13 1933-04-20 Aron Electricity Meter Ltd Improvements in or relating to the manufacture of pointers for instruments
US2038405A (en) * 1934-01-22 1936-04-21 Gamewell Co Electric switch
US2096064A (en) * 1935-01-23 1937-10-19 Sophie Seberhagen Controller
US2177483A (en) * 1936-08-01 1939-10-24 Mallory & Co Inc P R Gang switch
US2257643A (en) * 1939-02-13 1941-09-30 Telefunken Gmbh Method of making rotary condensers
US2277443A (en) * 1941-05-10 1942-03-24 Comar Electric Co Switch-stack assembly
US2349878A (en) * 1942-11-17 1944-05-30 Western Electric Co Assembling apparatus
US2438959A (en) * 1942-12-12 1948-04-06 Western Electric Co Method of assembling arcuate terminal banks
FR917723A (fr) * 1945-07-24 1947-01-20 Constr Telephoniques Perfectionnements aux mécanismes d'avancement des commutateurs rotatifs
BE471881A (en, 2012) * 1946-03-15

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB244458A (en) * 1924-12-09 1927-03-07 Automatic Telephone Mfg Co Ltd Improvements in or relating to automatic switches for use in telephone or like systems
GB358293A (en) * 1930-10-15 1931-10-08 Coventry Autom Telephones Ltd Improvements in or relating to electromagnetic step-by-step switches
US2194051A (en) * 1935-09-26 1940-03-19 Siemens Ag Telephone switch

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641050A (en) * 1946-03-15 1953-06-09 Automatic Elect Lab Method of making rotary switch wipers
US2885540A (en) * 1953-02-21 1959-05-05 Philips Corp Radio-telecommnucation equipment for simplex or duplex traffic with uniselector switch
US2792479A (en) * 1953-12-09 1957-05-14 Gintovt Henry Cycle control switch
US2799755A (en) * 1954-08-24 1957-07-16 Gen Electric Co Ltd Contact wiper assemblies for electromagnetic step-by-step switches
US2948013A (en) * 1955-09-07 1960-08-09 Blaw Knox Co Program control for soot blowers
US3238319A (en) * 1961-09-13 1966-03-01 American Mach & Foundry Switch with axially spaced angularly offset rotary wiper contacts
US20060244559A1 (en) * 2004-01-20 2006-11-02 E.G.O. Elektro-Geraetebau Gmbh Magnetically activated contacting device
US7492244B2 (en) * 2004-01-20 2009-02-17 E.G.O. Elektro-Geraetebau Gmbh Magnetically activated contacting device

Also Published As

Publication number Publication date
NL171847B (nl)
GB642586A (en) 1950-09-06
FR943077A (fr) 1949-02-25
US2641050A (en) 1953-06-09
GB642640A (en) 1950-09-06
BE471881A (en, 2012)
US2710896A (en) 1955-06-14

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