US1746370A - Electrical switch - Google Patents

Electrical switch Download PDF

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Publication number
US1746370A
US1746370A US148919A US14891926A US1746370A US 1746370 A US1746370 A US 1746370A US 148919 A US148919 A US 148919A US 14891926 A US14891926 A US 14891926A US 1746370 A US1746370 A US 1746370A
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US
United States
Prior art keywords
shaft
slide
crank
blade
switch
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
US148919A
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English (en)
Inventor
Strand Knut Madsen
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1746370A publication Critical patent/US1746370A/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
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H01H31/283—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact wherein the contact or contacts are rectilinearly movable with respect to the carrying member

Definitions

  • This invention relates to that type of electrical switches in which the contact-blade is so connected with its operating means that, in breaking the circuit, the blade is first I moved-along the contact springs and then describes an angular movement, whereas the closing of the circuit is effected by a rectilinear movement following an angular movement of the blade.
  • the novelty of the invention consists in providing controlmechanism for the movable blade carrier that moves the latter longitudinally thereof, and prevents longitudinal movement during'the angular movement of the blade and vice versa.
  • Fig. 1 is a side elevation of a' switch in accordance with the invention.
  • Fig. 2 is a part plan corresponding to Fig. 3 is a side elevation, partly in section, showing the mechanism for efiecting the combined longitudinal and angular movements of the blade carrier.
  • gig. t is a plan corresponding to Fig. 3, an
  • FIG. 5 shows, in side elevation and part section, a second or modified form of the operating mechanism.
  • 1 denotes the frame on which the switch is mounted, 2, 3 and 4 the insulating pillars supporting the various switch members, 5 the contact-springs supattached a head 22 adapted to be turned in a ported by the pillar 2, 6 the contact-blade,
  • Said head is pivotally connected to a rod 13, so that the rod can swing in a vertical plane.
  • the rod is connected to a crank arm 11 keyed on a shaft 25 which is rigidly attached to the blade carrier 7.
  • the shaft 25 50 is journalled in a slide 10 arranged to work in guides 14 in a support 9.
  • Said slide has a stop 15 with an oblique forward end adapted to co-act, with a latch 18, on an arm 16 pivoted on a bracket 17 and controlled by a spring 19.
  • the angle of the crank 11 is such that under thepull of the rod 13 it necessarily moves the slide until the projection 11* comes against the pin 20.
  • the crank 11 and shaft 25 are also turned to impart an angular movement to the carrier 7 and blade 6 in the reverse direction, but the latch 18 prevents any horizontal movement of the slide 10 until the projections 11 have lifted the latch out of engagement with the stop 15, whereupon a horizontal movement of the slide etc. ensues back to the original position, that is to say, the contact-blade is first swung into the horizontal position and then thrust lengthwise between the contact springs.
  • the crank arm 11 is connected to a wiper 26.
  • Said wiper is pro vided with a curved portion 28 and a straight portion 29 with which a roller 27 on the arm 16 makes contact.
  • the portion 29 is in contact with the roller 27 and prevents any angular movement of the crank pin 11 and therefore of the carrier 7 for the contact-blade 6.
  • a positive rotational move ment is imparted to the crank pin 11 and consequently to the carrier 7 for the contactblade 6, the surface 28 moving over the roller 27 until, as indicated bythe broken lines, the
  • the stopping and controlling device is constructed in such a way that the horizontal motion is limited by a surface 28A contacting with the roller 27 placed upon a support 34 carried by a portion 9 similar'to that shown in Fig. 5.
  • 31 denotes an arm carrying a stopping screw 32 coacting with a stop 33 and adapted for adjusting the an lar motion of the device.
  • ig. 7 shows a construction substantiall similar to that shown in Fig. 6 the only di ference consisting therein that a groove is arranged in the stopping and controlling device embracin the roller,27 so that any free 40 motion of the device is prevented.
  • the groove is provided with rounded connecting surfaces 29" and 29 between the straight portion and the curved portion of the guide.
  • an electrical switch according to this invention makes neo-. essary grindin of the contacts against each other possible by means of the usualoperating handle or mechanical appliances without interrupting the working.
  • the breakmg handle may be provided 7 with a rigid arch upon which the handle is moved during the angular motion between the outermost positions.
  • Such arch may be provided with stops by means of which the andle 15 secured in its positions for openmg and breaking the circuit.
  • an adjustable stop is provided by means of which the operating handle may be moved forward and backward in such a wa that the contact blade receives a longitu inal motion limited so that a breaking of the circuit is avoided.
  • crank on the shaft, operating means con-' nected with the crank, a stationary sto and means movable with the slide under t e action of the operating means to engage the stop whereafter the operating means acts to turn the shaft in the slide.
  • a oo-acting movable conmaaavo tact-bladefa carrier for the blade for the blade, a shaft on stop during movement which the carrier is secured, a slide in which the shaft is j ournalled, a crank on the shaft, an operating disc, a crank pin on the disc, a head turnable on the pin, a connecting rod pivotally connected at one end to the head and at its other end to the aforesaid crank, a stationary stop, means movable with the slide to engage said stop during movement of the operating disc in a direction to open the switch and means on the aforesaid crank to free the slide again during movement of the operating disc in a direction to close the switch.
  • V 10 In an electrical switch the combination of a frame, insulating pillars on the frame, resilient contact jaws on one of the pillars a coacting contact blade, a movable carrier or the blade, a housing supported by the remaining pillars, a slide within the housing, a shaft journalled in the slide on which shaft the carrier is secured, a crank on the shaft, an operating disc, a crank pin on the disc, a head turnable on the pin, a rod pivotally connected 9 at one end to the head and at its other end to the aforesaid crank, means movable with the slide for controlling the position of the crank during the motion of the slide and preventing any uncontrolled motion of the same.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Thermally Actuated Switches (AREA)
  • Knives (AREA)
  • Adjustable Resistors (AREA)
US148919A 1925-11-23 1926-11-17 Electrical switch Expired - Lifetime US1746370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO261723X 1925-11-23

Publications (1)

Publication Number Publication Date
US1746370A true US1746370A (en) 1930-02-11

Family

ID=19905062

Family Applications (1)

Application Number Title Priority Date Filing Date
US148919A Expired - Lifetime US1746370A (en) 1925-11-23 1926-11-17 Electrical switch

Country Status (4)

Country Link
US (1) US1746370A (fr)
DE (1) DE451667C (fr)
FR (1) FR630837A (fr)
GB (1) GB261723A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968607C (de) * 1943-05-07 1958-03-13 Aeg Verwindungssteifer Lenker-Trennschalter
DE1063244B (de) * 1954-12-15 1959-08-13 Siemens Ag Trennschalter
DE2744550A1 (de) * 1977-10-04 1979-04-12 Bbc Brown Boveri & Cie Hochspannungs-trennschalter

Also Published As

Publication number Publication date
FR630837A (fr) 1927-12-09
GB261723A (en) 1927-11-17
DE451667C (de) 1927-10-29

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