US1820922A - Relay and meter testing and calibrating switch - Google Patents

Relay and meter testing and calibrating switch Download PDF

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Publication number
US1820922A
US1820922A US460823A US46082330A US1820922A US 1820922 A US1820922 A US 1820922A US 460823 A US460823 A US 460823A US 46082330 A US46082330 A US 46082330A US 1820922 A US1820922 A US 1820922A
Authority
US
United States
Prior art keywords
fingers
contact
shaft
finger
relay
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
US460823A
Other languages
English (en)
Inventor
Sporn Philip
Henry D Freitag
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.)
ELECTRIC PROGRESS Co Inc
ELECTRIC PROGRESS COMPANY Inc
Original Assignee
ELECTRIC PROGRESS Co 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 NL53519D priority Critical patent/NL53519C/xx
Application filed by ELECTRIC PROGRESS Co Inc filed Critical ELECTRIC PROGRESS Co Inc
Priority to US460823A priority patent/US1820922A/en
Application granted granted Critical
Publication of US1820922A publication Critical patent/US1820922A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/08—Wood
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
    • H01H21/58—Change-over switches without stable intermediate position

Definitions

  • the invention relates to electrical switching apparatus, more especially for use in the testing and Calibrating of relay and meter installations; and it has for its object to render this possible, without dismounting an instrument or getting in back of a panel board, merely by the insertion of a suitable key into the switching apparatus and the turning of the saine to cut out the particular instrument or instruments from the line and eHect connection temporarily to test apparatus located at some convenient point.
  • the present embodiment contemplates an arrangement wherein permanent contact is also had with the intermediate linger but the contact element is not in any way secured to said finger, merely effecting a wiping contact therewith as the shaft is oscillated in either direction; and the said contact element is, furthermore, fixedly secured to the shaft and not pivotally.
  • Fig. 1 is a vertical section through the novel switch apparatus.
  • Fig. 2 is a plan view thereof with lid of enclosing casing removed and panel to which the casing is shown attached indicated in section.
  • Fig. 3 is an elevation, on a reduced scale, of the escutcheon plate may be secured to its panel.
  • 10 designates a box structure or enclosing casing, of any suitable design, which is adapted to house and support an oscillatable shaft 11, as between by which the switch its end walls 12 and 13.
  • the said shaft passes, also, through the front wall 13 and projects beyond the same into a recess 14 provided in the panel 15, to which said casing may be attached by bolts 16 or the like, and through a suitable escutcheon plate 17, having a diametrically slotted opening 18 which designed to receive a key member 19.
  • the latter has diametrically disposed pins 2O eX- tcnding from its periphery to lit the slot 18 for insertion of the key and, when turned, to lock the same behind the escutcheon plate to prevent withdrawal of said key.
  • rlhe key furthermore, is provided with a slot or socket 21 at its inner edge to fit over and engage with a pin 22 of the shaft for effecting the oscillation of the latter, it being understood that when the key is turned to a position such that it is locked against withdrawal the switch serves to disconnect a particular instrument (not shown) into a test circuit through the leads 25, 26, 27 and 25',
  • the novel switch mechanism is mounted within the casing 10 and comprises a set of upper and lower (outer) and intermediate contact lingers 30, 31 and 32, and a set of fingers 33, 84 and 35, the lingers of the two sets being arranged in pairs and disposed respectively on opposite sides of the shaft 11, with Contact fingers of each set lying in a common plane and the intermediate fingers also in the plane of the shaft.
  • the said fingers are preferably of the di vided spring socket type with embracing spring steel members 86 to normally force the separated socket elements together; and suitable posts 37 extend from the various sockets hrough the respective side walls of the casing and exteriorly to afford connection of an instrument to the various leads.
  • each of these contact-making elements embodies outer contacts as an upper and a lower prong, for effecting a wiping contact with the respective upper and lower fingers as the shaft is correspondingly oscillated, and an intermediate prong for continuously effecting a wiping contact with an intermediate finger.
  • I he radius of an intermediate prong and the contacting surface thereof is such that in either extreme of oscillation of the shaft Il the said prong will remain in Contact with its juxtaposed intermediate contact finger.
  • an intermediate prong, though not permanently attached, is always in contact with its particular contact finger and a wiping action prevails so that the engaging surface will always be maintained in good condition for contact.
  • a similar wiping action is effected also between the outer contact prongs and their juxtaposed fingers, the arrangement in view of the position of said prongs above and below the shaft being such that when one prong of a contact element engages one of the outer fingers, the oppositely positioned prong of said element is out of contact with the juxtaposed outer finger, except, if desired, during the immediate period of transition.
  • the particular outer prong of one element in engagement with its finger will be opposite the outer one of the other Contact element in engagement, as indicated in F ig. l which illustrates the position wherein a plurality of instruments are cut into the lineI for normal operation.
  • shaft ll would be turned to the right, causing the contact elements 43, 44 and 45 to break engagement between the upper fingers 30 and intermediate fingers 32, and contact elements 46, 47 and 48 to break the engagement between the lower fingers 34 and intermediate fingers 35 and thus changing the circuits of the corresponding instruments.
  • the contact elements 43, 44 and 45 will connect the intermediate fingers 32 with fingers 31 and the contact elements 46, 47 and 48 will connect the lingers 33 with intermediate fingers 35. Vhile only one upper and one lower finger has been shown as associated with an intermediate finger, it will be understood, of course, that additional outer fingers and corresponding prongs may be provided to meet special circuit changing conditions.
  • a swich of the class described comprising a box-like structure, sets of upper, lower and intermediate contact fingers mounted upon oppositely disposed walls of said box, the said fingers of each set lying in acommon plane and having means extending exteriorly of the box for connection thereto, a shaft oscillatably journaled in the opposite walls of the boxl with axis of oscillation at right angles to the plane of said sets of fingers, two oppositely directed contact elements rigidly supported on opposite sides of the shaft to move therewith, each having an intermediate prong permanently in wiping engagement with a juxtaposed intermediate finger and also having outer prongs adapted foi1 wiping engagement with the respective outer fingers of aset, the arrangement being such that as the shaft is lrocked one of the outer prongs goes into engagement ⁇ with its uxtaposed outer finger while the other goes out of engagement with its juxtaposed outer finger and simultaneously the opposite prong of the other contact element goes out of engagement with its juxtaposed finger while the other prongV of said last-named contact element goes into

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
US460823A 1930-06-13 1930-06-13 Relay and meter testing and calibrating switch Expired - Lifetime US1820922A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL53519D NL53519C (en(2012)) 1930-06-13
US460823A US1820922A (en) 1930-06-13 1930-06-13 Relay and meter testing and calibrating switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US460823A US1820922A (en) 1930-06-13 1930-06-13 Relay and meter testing and calibrating switch

Publications (1)

Publication Number Publication Date
US1820922A true US1820922A (en) 1931-09-01

Family

ID=23830201

Family Applications (1)

Application Number Title Priority Date Filing Date
US460823A Expired - Lifetime US1820922A (en) 1930-06-13 1930-06-13 Relay and meter testing and calibrating switch

Country Status (2)

Country Link
US (1) US1820922A (en(2012))
NL (1) NL53519C (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761027A (en) * 1951-09-17 1956-08-28 Santon Ltd Rotary electrical switches
US2784282A (en) * 1956-02-21 1957-03-05 Allis Chalmers Mfg Co Hinged electrical connection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761027A (en) * 1951-09-17 1956-08-28 Santon Ltd Rotary electrical switches
US2784282A (en) * 1956-02-21 1957-03-05 Allis Chalmers Mfg Co Hinged electrical connection

Also Published As

Publication number Publication date
NL53519C (en(2012))

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