US1893856A - Relay - Google Patents

Relay Download PDF

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Publication number
US1893856A
US1893856A US406048A US40604829A US1893856A US 1893856 A US1893856 A US 1893856A US 406048 A US406048 A US 406048A US 40604829 A US40604829 A US 40604829A US 1893856 A US1893856 A US 1893856A
Authority
US
United States
Prior art keywords
armature
contacts
arms
magnet
coil
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
US406048A
Other languages
English (en)
Inventor
Broughton Denis Mcdonnell
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
Priority claimed from GB3270628A external-priority patent/GB335352A/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1893856A publication Critical patent/US1893856A/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/40—Branched or multiple-limb main magnetic circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements

Definitions

  • This invention relates to an improved electrical relay with the object of attalmng the combination of high sensitivity and ease of adjustment.
  • I provide a balanced armature located between and parallel with the arms of a horseshoe magnet and; suitably pivoted so that it may oscillate between the poles, to which are attachedextension pieces to concentrate the magnetic flux.
  • a coil for controlling the movement of the armature encircles the latter and is located between the arms of the magnet.
  • I further provide a magnetic shunt for controlling the disposition of the magnetic field.
  • This shunt conveniently consists of an adjustable'bridge piece of suitable metal making contact wlth both arms of the magnet.
  • the mechanism is preferably enclosed in a .0 casing which may take the form of a brass casting, the magnetic shunt being mounted and pivoted in the lid or cover and furnished with an operating and registering pointer on the exterior working in conjunction with a scale.
  • a .0 casing which may take the form of a brass casting
  • the magnetic shunt being mounted and pivoted in the lid or cover and furnished with an operating and registering pointer on the exterior working in conjunction with a scale.
  • This construction provides a strong mechanism of extreme sensitivity and ease of adjustment.
  • the magnetic shunt enables the instrument to be adapted to function with exterior circuits of widely differing electrical values, since the bias of the armature to either magnetic pole may be adjusted within wide limits and consequently the strength of current necessary to overcome this bias will vary accordingly.
  • Figure 2 is a plan view of the lid of the mechanism showing the pointer whereby adj ustment is effected and its co-operating scale.
  • Fig. 3 is a section of one form of adjustable contact device.
  • Fig. 4 is a section of another form of adj ustable contact device.
  • the permanent magnet A encloses the operating coil T, in the centre of which is the armature F, which is freely pivoted between the magnet poles to which are attached pole extension pieces U1 and U2, the function of which is to concentrate the magnetic flux in the immediate neighbourhood of the end of the armature.
  • the latter is freely pivoted within the coil T.
  • the disposition of the magnetic field is controlled by means of the magnetic shunt B centrally and radially mountedat 'C and when the cover E is in place serves to adjust the disposition of the field with regard to the poles of the magnet accordin to its adjustment which is determined and registered by the pointer D on the exterior of the cover E.
  • This provides a simple and very sensitive method of adjustment for the balancing of the armature between its two contacts.
  • the mechanism is contained within a box casing H and enclosed by the lid E.
  • the screw V holds the magnet rigid-within the casing and permits its easy withdrawal when required.
  • the armature weight X serves to 85 balance the armature about its axis Y.
  • delicate adjustment of the. armature contacts may be obtained by forming the contact points H half way up a leaf I seeuredat the bottom and acted upon ous that e centre of the leaf spring will only travel half the extent of the travel of l the top of the leaf spring and thus adjustment applied to the top of the leaf spring b means of the adjusting screw J will be re need in extent by half at the pointof contact H the proportionate distance of the points of contact and adjustment from the fulcrum L may of course be arranged to meet particular conditions.
  • a polarized relay comprising a permanent magnet having two arms, a pair of pole pieces secured one to each of said arms, a hollow coil located between said arms, a pair of stationary contacts located ad'acent said poleieces, a pivotally moun armature exten ing through said coil and between said pole pieces and said contacts and a magnetic shunt pivotally mounted relatively to said arms, said magnetic shunt bein rotatable in a plane arallel to the plane 0 said magnet, where y when said shunt is oscillated about its centre it serves simultaneously to increase and decrease the direction and mag; nitude of the operative field strength throug said armature.
  • a polarized relay comprising a permanent magnet having two arms, a pair of pole ieces secured one to each of said arms, a l iollow coil located between said arms, a pair of stations. contacts located ad'acent said pole piecesjlZverage-reducing mec anism for adjusting said contacts, a ivotally-mounted armature extending throug said coil and between said pole pieces and said contacts, a
  • balance weight secured to said armature at its end remote from said contacts, a shaft located beyond said coil and between said weight and said contacts, said armature being pivotally mounted on the shaft, and a magnetic shunt being rotatable in a. plane parallel to the plane of said magnet.
  • a polarized relay comprising a permanent magnet having two arms, a pair of pole pieces secured one to each of said arms, a hollow coil located between said arms, a pair of stationary contacts located ad'acent said pole pieces, leverage-reducin mec anism for adjusting said contacts, sai mechanism including a pair of springs secured at one of their ends in a fixed position, said contacts being mounted at about the mid-point of said

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US406048A 1928-11-09 1929-11-09 Relay Expired - Lifetime US1893856A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1893856X 1928-11-09
GB3270628A GB335352A (en) 1929-08-09 1929-08-09 An improved electromagnetic relay

Publications (1)

Publication Number Publication Date
US1893856A true US1893856A (en) 1933-01-10

Family

ID=26261523

Family Applications (1)

Application Number Title Priority Date Filing Date
US406048A Expired - Lifetime US1893856A (en) 1928-11-09 1929-11-09 Relay

Country Status (3)

Country Link
US (1) US1893856A (ja)
BE (1) BE365295A (ja)
DE (1) DE573642C (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443784A (en) * 1943-05-17 1948-06-22 Barber Coleman Company Relay
US2550297A (en) * 1944-09-04 1951-04-24 Gen Controls Co Electromagnetically operated valve
US2609462A (en) * 1948-11-29 1952-09-02 Shipton & Company Ltd E Polarized relay
US2816976A (en) * 1955-07-08 1957-12-17 Rupert E H Carpenter Polarised electromagnetic relays and like devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443784A (en) * 1943-05-17 1948-06-22 Barber Coleman Company Relay
US2550297A (en) * 1944-09-04 1951-04-24 Gen Controls Co Electromagnetically operated valve
US2609462A (en) * 1948-11-29 1952-09-02 Shipton & Company Ltd E Polarized relay
US2816976A (en) * 1955-07-08 1957-12-17 Rupert E H Carpenter Polarised electromagnetic relays and like devices

Also Published As

Publication number Publication date
DE573642C (de) 1933-04-04
BE365295A (ja)

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