US2292471A - Switching mechanism - Google Patents

Switching mechanism Download PDF

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Publication number
US2292471A
US2292471A US334886A US33488640A US2292471A US 2292471 A US2292471 A US 2292471A US 334886 A US334886 A US 334886A US 33488640 A US33488640 A US 33488640A US 2292471 A US2292471 A US 2292471A
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United States
Prior art keywords
armature
unit
master
operated
armatures
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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
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US334886A
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English (en)
Inventor
John E Ostline
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.)
Associated Electric Laboratories Inc
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Associated Electric Laboratories Inc
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Filing date
Publication date
Priority to BE467272D priority Critical patent/BE467272A/xx
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Priority to US334886A priority patent/US2292471A/en
Priority to GB6086/41A priority patent/GB549243A/en
Application granted granted Critical
Publication of US2292471A publication Critical patent/US2292471A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/10—Manual exchanges using separate plug for each subscriber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/10—Contacts retained open or closed by a latch which is controlled by an electromagnet

Definitions

  • the present invention relates to switching mechanism and more particularly to electromagnetic switching mechanism of the relay type.
  • Electrical control systems and particularly automatic telephone systems conventionally comprise a large number of electromagnetic relays which are selectively operated to complete different control circuits and which are held in their operated positions for considerable periods of time in order to retain completed the control circuits.
  • each relay is operated when the Winding thereof is energized and is held in its operated position by retaining its winding energized.
  • an object of the present invention to provide improved electromagnetic switching apparatus of the relay type including a plurality of unit relays, each of which is operated electrically and retained in its operated position mechanically
  • Another object of the invention is to provide improved switching mechanism of the type described, which is of rugged and compact construction and which is reliable and positive in operation.
  • a further object of the invention is to provide in an electromagnetic device comprising a master magnet and a plurality of unit magnets, an improved interlocking arrangement between the armature of the master magnet and the armatures of the unit magnets for selectively controlling the positions of the armatures of the unit magnets.
  • switching mechanism which comprises a master magnet having a master armature associated therewith, means responsive to the energization of the master magnet for moving the master armature from its restored position to its operated position, means responsive to the deenergization of the master magnet for moving the master armature from its operated position back to its restored position, a plurality of unit magnets having a plurality of unit armatures individually associated therewith, and a plurality of restraining devices individually associated with the unit armatures, each of the restraining devices having a normal position and an operated position.
  • the switching mechanism comprises means responsive to the momentary energization of any one of the unit magnets for urging the associated one of the unit armatures to move from its restored position to its operated position, whereby the one unit armature is moved from its restored position to its operated position in the event movement thereof is not prevented, means controlled by the movement of any one of the unit armatures from its restored position to its operated position for operating the associated one of the restraining devices from its normal position to its operated position, whereby the one unit armature is restrained in its operated position, means including an interlocking arrangement between the master armature and each of the unit armatures for positively preventing movement of each of the unit armatures from its restored position to its operated position when the master armature occupies a predetermined one of its positions, a plurality of contact sets individually associated with the restraining devices, and means for operating each one of the Contact sets in accordance with the operation of the associated one of the restraining devices.
  • the interlocking arrangement is so constructed that it not only constitutes means for positively preventing movement of each one of the unit armatures from its restored position to its operated position when the master armature occupies a predetermined one of its positions, but it also constitutes means for moving each one of the unit armatures occupying its operated position against the associated one of the restraining devices back to its restored position when the master armature is moved from the other of its positions to its one position.
  • the switching mechanism comprises a magnet having an armature associated therewith, a movable member having a contact portion and a restraining portion, a stationary member having a contact portion associated with the contact portion of the movable member, the restraining portion of the movable member being associated with the armature, means responsive to the momentary energization of the magnet for operating the armature, means controlled by the operation of the armature for operating the Inovable member, whereby the contact portion of the movable member is moved with respect to the contact portion of the stationary member and the restraining portion of the movable member is moved into engagement with the armature in order to restrain the armature operated, means for restoring the armature, and means controlled by the restoration of the armature for restoring the movable member, whereby the contact portion of the movable member is moved with respect to the contact portion of the stationary member and the restraining portion of the movable member is moved into disengagement with the armature
  • the switching mechanism comprises a support including an upstanding longitudinally extending web and a laterally projecting longitudinally extending flange, a master magnet carried by the support, a longitudinally extending master armature carried by the support and associated with the master magnet, a plurality of unit magnets carried by the web and arranged in longitudinally spaced-apart side-by-side relationship, a plurality of unit armatures carried by the flange and arranged in longitudinally i spaced-apart side-by-side relationship and individually associated with the unit magnets, means including the master magnet for controlling the position of the master armature,
  • FIG. 1 is a fragmentary plan view, partly broken away, of an electromagnetic switching mechanism of the relay type constructed and arranged in accordance with the present invention
  • Fig. 2 is a fragmentary front elevational view of the switching mechanism shown in Fig. 1
  • Fig. 3 is an enlarged end elevational view of the switching mechanism and a diagrammatic illustration of certain control circuits associated therewith.
  • the switching mechanism there shown comprises an elongated longitudinally extending support I having a substantially Z-shaped cross section including a laterally projecting body II, an upstanding web I2 and a laterally projecting flange I3.
  • the body II carries a master magnet I4 comprising a field structure I5 carrying a winding spool I6 supporting a winding I1.
  • the field structure I5 is rigidly secured to a substantially L-shaped supporting bracket I8 by two collars I9, the bracket I8 being suitably fastened to the body II.
  • the collars I9 securely retain the winding spool I6 in place upon the field structure I5.
  • a substantially rectangular bracket surrounding the winding spool I6 is secured t0 the body II and carries a pivot pin 2
  • the master armature 22 comprises a stem 23 which carries a pair of lugs 24y pivotally mounted upon the pivot pin 2I and a head 25.
  • the eld structure I5 of the master magnet I4 and the master armature 22 are so constructed and arranged that one leg of the field structure I5 is operatively associated with the stem 23 of the master armature 22 adjacent the outer end thereof and another leg of the eld structure I5 is operatively associated with the stem 23 of the master armature 22 adjacent the lugs 24 and consequently adjacent the pivot pin 2
  • the web I2 carries a plurality of unit magnets 26 arranged in longitudinally spaced-apart sideby-side relationship, each unit magnet 26 carrying a winding spool 21 supporting a winding 2B. Also each unit magnet 26 is provided with a field structure including the adjacent portions of the web I2 and the flange I3.
  • the flange I3 carries a longitudinally extending pivot pin 29 upon which there are supported a plurality of unit armatures 30 arranged in longitudinally spacedapart side-by-side relationship and individually associated with the unit magnets 26. More particularly, each unit armature 3D is substantially L-shaped comprising a body 3I carrying two spaced-apart lugs 32 pivotally mounted upon the pivot pin 29 and an arm 33 disposed below the flange I3.
  • each unit armature 30 is disposed between the flange I3 and the outer end of the head 25 of the master armature 22, the arm 33 of each unit armature 30 carrying an insulating stop 34 adapted to engage the lower surface of the flange I3 and the head 25 of the master armature 22 carrying a plurality of longitudinally spaced-apart insulating stops 35 adapted to engage the lower surfaces of the arms 33 of the respective unit armatures 30.
  • a resilient coil spring 36 is arranged between the web I2 and the head 25 of the master armature 22, one end of the coil spring 36 being secured to the head 25 and the other end of the coil spring 36 being secured to a tab 31 carried by the web I2.
  • the coil spring 36 biases the master armature 22 in a counterclockwise direction about the pivot pin 2I, as viewed in Fig. 3, thereby to force the longitudinally spaced-apart stops 35 carried by the head 25 of the master armature 22 into engagements with the lower surfaces of the arms 33 of the various unit armatures 30 in order to cause the various unit armatures 30 to be rotated in a clockwise direction about the pivot pin 29, as viewed in Fig. 3, whereupon the longitudinally spaced-apart stops 34 carried by the arms 33 of the various unit armatures 30 are moved into engagements with the lower surface of the flange I3.
  • the switching mechanism comprises a longitudinally extending plate 38 having an upturned flange 39 on the outer end thereof, constituting a contact bar, and a plurality of longitudinally spaced-apart contact rods 40.
  • the plate 38 and the contact rods 40 are secured to the body II by an arrangement ⁇ comprising a longitudinally extending clamping plate 4I., a plurality of longitudinally extending insulating strips 42 and a number of screws 43, the insulating strips 42 being arranged interbetween the body II, the plate 38, the contact rods andv the clamping plate 4I in order to ⁇ insulate each of these members from the other, and the screws 43 extending throughl aligned openings ⁇ provided in the clamping plate 4I and the insulating strips 42 and threaded into tapped holes formed in the body II.
  • the Contact bar 39 has a plurality of longitudinally spaced-apart notches 44 n the upper edge thereof, each one of these notches 44 ,being substantially V-shaped and disposed below an associated one ofY the contact rods 49, whereby each notch 44 is adapted to receive the associated contact rod and to make twin contact therewith.
  • the contact bar 39 and at least the contact portions of the contact rods 40 are plated with an arc-resistant material, such as silver, in order to minimize corrosion of these elements incident to operation of the switching mechanism.
  • the outer end of each of the contact rods 40 is provided with a restraining portion which cooperates with a restraining portion 46 provided on the outer end of the body 3
  • ) and the cooperating restraining portion 46 of the associated unit armature 39 each have a substantially V-shape and cooperate in a manner more fully described hereinafter.
  • the switching mechanism comprises a set of switch springs 41 carried by the bracket 29 and operatively associated with the master armature 22.
  • the set of switch springs 4l includes three switch springs 48, 49 and 59 and is securely fastened to the bracket 20 by an arrangement comprising a clamping plate 5
  • the switch spring 48 is directly connected to the outer end of the head 25 of the master armature 22 by an insulating post 54 and is operatively associated with the switch spring 50, whereas the switch spring 59 is operatively associated with the switch spring 49.
  • An operating circuit for the master magnet I4 which comprises a grounded battery 69, a control key KII, the winding i 'I of the master magnet I4, the switch spring 5U and the grounded switch spring 49; and a holding circuit for the master magnet I4 is provided which comprises the grounded battery 54, the control key KGI, the winding I7 of the master magnet I4, the switch spring 59, the switch spring 48 and the grounded resistor 62.
  • An operating circuit for one of the unit magnets 26 is provided which comprises a grounded battery 63, the wiper 64 and the second contacts 65 of a rotary switch S66 and the grounded winding 28 of the unit magnet 26.
  • a circuit controlled jointly by the master magnet I4 and one of the unit magnets 26 is provided which cornprises a grounded battery 61, a load lamp L68, one of the :contact rods 49 and the grounded yplate 33.
  • thereof cooperates with the restraining portion 45 provided on the outer end of the associated contact rod 46, thereby to force the outer end of the associated contact rod 40 upwardly away from the cooperating notch 44 provided in the contact bar 39 carried by the plate 38, whereupon the previously traced circuit for energizing the associated load lamp L68 is retained interrupted.
  • the previously traced operating circuit for energizing the winding I'I of the master magnet I4 is first completed by actuating the control key K6I.
  • the operating circuit for energizing the winding I'I of the master magnet I4 is completed, a magnetic flux is set up in the field structure I5 of the master magnet I4 which traverses the stem 23 of the master armature 22 in an obvious manner, thereby to cause the master armature 22 to be rotated in a clockwise direction about the pivot pin 2 I, as viewed in Fig. 3.
  • the switch springs 48 and 5t are rst operated into engagement due to the connection of the switch spring 48 to the head 25 of the master armature 22 by the insulating post 54, and then the switch springs 49 and 59 are operated into disengagement. Accordingly, upon operation of the master armature 22, the previously traced holding circuit for energizing the winding I1 of the master magnet I4 is first completed and then the operating circuit for energizing the winding II of the master magnet I4 is interrupted, the master armature 22 being retained in its operated position so long as the holding circuit for energizing the winding I'I of the master magnet I4 is completed. It is noted that the holding circuit for energizing the winding I'I of the master magnet I4 includes the resistor t2, thereby to reduce the holding current flowing in this holding circuit after the master armature 22 has been operated.
  • each of the unit armatures 36 is rendered free to rotate in a counterclockwise direction about the pivot pin 29, as viewed in Fig. 3.
  • the winding 28 of the associated one of the unit magnets 25 is momentarily energized by operating the rotary switch S66.
  • the rotary switch S66 is operated in order to cause the wiper 64 thereof to engage momentarily the second Contact thereof, thereby momentarily to complete the previously traced circuit for enel'- gizing the winding 28 of the unit magnet 26.
  • a magnetic flux is set up in the associated eld structure including the adjacent portions of the web I2 and the flange I3 in an obvious manner, thereby to cause the unit armature 39 to be rotated in a counterclockwise direction about the pivot pin 29, as viewed in Fig. 3.
  • the restraining portion 46 provided on the outer end of the body 3i thereof cooperates with the restraining portion 45 provided on the outer end of the associated contact rod 40 in order to cause the associated contact rod 40 to be movedv downwardly into engagement with the associated notch iti-4 provided in the contact bar 39, whereupon the previously traced circuit for energizing the load lamp L58 is completed.
  • of the unit armature 30 rides under the restraining portion 45 carried on the outer end of the associated contact rod 40 in order to cause these two restraining portions to be retained in interlocking relationship, whereby the unit armature 30 is restrained against movement in a clockwise direction about the pivot pin 29, as viewed in Fig. 3. Accordingly, when the circuit for energizing the winding 28 of the unit magnet 2t is subsequently interrupted, the associated unit armature 30 is restrained in its operated position due to the cooperation between the restraining portion 45 provided on the outer end of the body 3
  • any number of the unit armatures 39 may be operated by causing the windings 28 of the associated unit magnets 26 to be energized momentarily, each of the unit armatures being restrained in its operated position incident to operation thereof. Also as each unit armature is operated and restrained in its operated position by the associated contact rod 40, the circuit for energizing the associated load lamp L63 is completed.
  • each unit armature 30 When each unit armature 30 is rotated in a clockwise direction about the pivot pin 29, the stop 34 carried by the arm 33 thereof engages the lower surface of the flange I3 in order to limit the movement thereof, and the restraining portion 46 provided on the outer end of the body 3
  • the circuit for energizing the associated load lamp L68 is interrupted in an obvious manner.
  • each of the unit armatures 30 is retained in its restored position while the master armature 22 occupies its restored position due to the interlock therebetween; that each of the unit armatures 30 is rendered operative from its restored position to its operated position only when the master armature 22 occupies its operated position due to the interlock therebetween; that while the master armature 22 occupies its operated position each one of the unit armatures 30 may be operated from its restored position to its operated position by momentarily energizing the winding 28 of the associated one of the unit magnets 26; and that while the master armature 22 occupies its operated position each of the unit armatures 30 is restrained in its operated position after it is operated by the restraining arrangement associated therewith. Finally it is noted that when the winding I1 of the master magnet I4 is deenergized, the master armature 22 is returned to its restored position, thereby to cause each operated one of the unit armatures 3
  • Switching mechanism comprising a master magnet having a master armature associated therewith, said master armature being moved from its restored position to its operated position 1n response to the energization of said master magnet and being moved from its operated position back to its restored position in response to the deenergization of said master magnet, a plurality of unit magnets having a plurality of unit armatures individually associated therewith, a plurality of restraining devices individually associated with said unit armaturesq each of said restraining devices having a normal position and an operated position, any one of said unit armatures being urged to move from its restored position to its operated position in response to the momentary energization of the associated one of said unit magnets, whereby said one unit armature is moved from its restored position to its operated position in the event movement thereof is not prevented, means controlled by the movement of any one of said unit armatures from its restored position to its operated position for operating the associated one of said restraining devices from its normal position to its operated position, whereby said one unit arma
  • Switching mechanism comprising a master magnet having a master armature associated therewith, said master armature being moved from its restored position to its operated position in response to the energization of said master magnet and being moved from its operated position back to its restored position in response to the deenergization of said master magnet, a plurality of unit magnets having a plurality of unit armatures individually associated therewith, a plurality of restraining devices individually associated with said unit armatures, each of said restraining devices having a normal position and an operated position, any one of said unit armatures being urged to move from its restored position to its operated position in response to the momentary energization of the associated one oi said unit magnets, whereby said one unit armature is moved from its restored position to its operated position in the event movement thereof is not prevented, means controlled by the movement of any one of said unit armatures from its restored position to its operated position for operating the associated one of said restraining devices from its normal position to its operated position, whereby said one unit
  • Switching mechanism comprising a master magnet having a master armature associated therewith, said master armature being moved from its restored position to its operated position in response to the energization of said master magnet and being moved from its operated position back to its restored position in response to the deenergization of said master magnet, a plurality of unit magnets having a plurality of unit armatures individually associated therewith, a plurality of restraining devices individually associated with said unit armatures, each of said restraining devices having a normal position and an operated position, any one of said unit armatures being urged tomove from its restored position to its operated position in response to the momentary energization of the associated one of said unit magnets, whereby said one unit armature is moved from its restored position to its operated position in the event movement thereof is not prevented, means controlled by the movement of any one of said unit armatures from its restored position to its operated position for operating the associated one of said restraining devices from its normal position to its operated position, whereby said one unit arma
  • Switching mechanism comprising a magnet having an armature associated therewith, a restraining device associated with said armature, said armature being operated in response to the momentary energization of said magnet, means controlled by the operation of said armature for operating said restraining device into restraining engagement with said armature, whereby said armature is restrained operated, means for positively restoring said armature against the restraining engagement of said restraining device, said restraining -device being restored in response to restoration of said armature, and a contact set controlled by said restraining device.
  • Switching mechanism comprising a magnet having an armature associated therewith, a movable Contact, said armature being operated in response to the momentary energization of said magnet, means controlled by the operation of said armature for operating said movable contact into restraining engagement with said armature, whereby said armature is restrained operated, means for positively restoring said armature against the restraining engagement of said movable contact, said movable contact being restored in response to restoration of said armature, and a stationary contact operatively associated with said movable contact.
  • Switching mechanism comprising a magnet having an armature associated therewith, a movable member having a contact portion and a restraining portion, a stationary member having a contact portion associated with the contact portion of said movable member, the restraining portion of said movable member being associated with said armature, said armature being operated in response to the momentary energization of said magnet, means controlled by the operation of said armature for operating said movable member, whereby the contact portion of said movable member is moved with respect to the contact portion of said stationary member and the restraining portion of said movable member is moved into restraining engagement with said armature in order to restrain said armature operated, and means for positively restoring said armature against the restraining engagement of the restraining portion of said movable member, said movable member being restored in response to restoration of said armature,whereby the contact portion of said movable member is moved with respect to the contact portion of said stationary member and the restraining
  • a unitary electromagnetic device comprising a longitudinally extending support, a master magnet carried by said support, a longitudinally extending master armature carried by said support and associated with said master magnet, said master armature being operated in response to the energization of said master magnet and being restored in response to the deenergization of said master magnet, a plurality of longitudinally spaced-apart unit magnets carried by said support, a plurality of longitudinally spacedapart unit armatures carried by said support and individually associated with said unit magnets, any one of said unit armatures being urged to operate in response to the energization of the associated one of said unit magnets, whereby said one unit armature is operated in the event it is not prevented from operating, a plurality of restraining devices carried by said support and individually associated with said unit armatures, each of said restraining devices being adapted mechanically to restrain operated the associated unit armature in response to operation thereof, and means including an interlocking arrangement between said master armature and each of said unit

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electromagnets (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US334886A 1940-05-13 1940-05-13 Switching mechanism Expired - Lifetime US2292471A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE467272D BE467272A (enrdf_load_stackoverflow) 1940-05-13
US334886A US2292471A (en) 1940-05-13 1940-05-13 Switching mechanism
GB6086/41A GB549243A (en) 1940-05-13 1941-05-10 Improvements in or relating to electromagnetic switching mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US334886A US2292471A (en) 1940-05-13 1940-05-13 Switching mechanism

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Publication Number Publication Date
US2292471A true US2292471A (en) 1942-08-11

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US334886A Expired - Lifetime US2292471A (en) 1940-05-13 1940-05-13 Switching mechanism

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US (1) US2292471A (enrdf_load_stackoverflow)
BE (1) BE467272A (enrdf_load_stackoverflow)
GB (1) GB549243A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195275A (en) * 1977-11-08 1980-03-25 Societe Anonyme Dite: La Telephonie Industrielle Et Commerciale - Telic Multiple electromagnetic relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195275A (en) * 1977-11-08 1980-03-25 Societe Anonyme Dite: La Telephonie Industrielle Et Commerciale - Telic Multiple electromagnetic relay

Also Published As

Publication number Publication date
GB549243A (en) 1942-11-12
BE467272A (enrdf_load_stackoverflow)

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