US1879523A - Mechanically actuated vibrating relay - Google Patents

Mechanically actuated vibrating relay Download PDF

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Publication number
US1879523A
US1879523A US432828A US43282830A US1879523A US 1879523 A US1879523 A US 1879523A US 432828 A US432828 A US 432828A US 43282830 A US43282830 A US 43282830A US 1879523 A US1879523 A US 1879523A
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United States
Prior art keywords
armature
relay
mechanical
actuated
movement
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Expired - Lifetime
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US432828A
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English (en)
Inventor
Salmon Reginald Dennis
Clifford Harry
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Creed and Co Ltd
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Creed and Co Ltd
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Publication date
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Publication of US1879523A publication Critical patent/US1879523A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • 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
    • H01H51/08—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet

Definitions

  • This invention relates to relays and like devices as used in signalling apparatus.
  • the invention relates to relays in which an electromagnet controls mechanical power for the operation of telegraphic or like signalling apparatus.
  • the examples given in the present specification show the invention as applied to apparatus in which alternating and intermittent movements of a control member from one to the other of two positions cause corresponding movements by mechanical power of a second member.
  • the first member may conveniently be the armature of an electromagnet responsive to telegraphic or like signalling currents.
  • the second member which is actuated by mechanical power may be utilized to effect mechanical operations in signalling apparatus, or may be utilized to operate switch contacts for comparatively heavy currents.
  • An arrangement of this description is generally referred to as a mechanical relay.
  • the invention is not limited to the application to any particular form of such so called mechanical relays or in effect to mechanical relays whatsoever, as it is capable of application to many forms of apparatus mechanically actuated under electromagnetic control.
  • the elementconstituting the second member which is actuated by mechanical power does not necessarily perform alternating and intermittent movements similar to the controlling member and therefore the term mechanical relay would not be readily applicable to the arrangement.
  • Alternative applications of the invention may comprise arrangements in which the alternating and intermittent movements of the controlling member cause corresponding intermittent movements of one or more cam sleeves.
  • the invention embodies a principle which is already known as applied in a particular manner to electromagnetic relays.
  • Such relays are known as vibrating or Gulstad relays.
  • This principle is well-known and may be stated to consist of applying electromagnetic retroaction on the armature of a polarized electromagnetic relay, which retroaction is timed by the electrical constants of associated condensers, inductances and resistances.
  • the armature of the relay is thus maintained in a state of constant oscillation or vibration from one side to the other and the rate of vibration is determined by the Values of these electrical constants.
  • the strength of the line current received which is required to reproduce signals based on cyclic rev'ersalsof this character need only be that suificient to suppress the locally induced oscillation of the armature.
  • the power required to move the armature from one position to the other is suppliedby a local source of electrical energy.
  • the line current need only be of sufficient strength to prevent the initiation of this movement.
  • the present invention provides means whereby retroaction on the armature of a polarized relay in telegraphic and like signalling apparatus is controlled by mechanical means. This is in turn controlled by the movement of the said armature, as in the case of a vibrating or Gulstad relay.
  • the invention in its broadest aspect consists essentially of an armature, a member actuated by mechanical power upon movement of said armature for efl'ecting the operation of telegraphic or like apparatus, local means controlled by said member tending to replace.
  • retroaction is entirely mechanical, being mechanical in action and mechanically timed and controlled.
  • the essential elements consist of an electromagnetic relay, an armature thereof operable between two positions, a distance piece actuated by mechanical power upon each movement of said armature in a direction contrary to said movement, two independent levers each in operative relation with one side of said armature and said distance piece, adjustable spring means acting on said levers and tending to cause said armature to follow the movement of said distance piece, and windings on said elec-- tromagnetic relay to hold said armature to one side or the other in accordance with the direction of current therein in opposition to said'spring means.
  • retroaction is electro-magnetic but timed and controlled by mechanically actuated means consequent upon movement of the armature, and consists of an electro-magnetic relay, an armature therefor operable between two positions, switch contacts actuated by mechanical power from one position to another upon each movement of said armature windings on said electromagnetic relay in circuit with a local source of electrical energy and said switch contacts causing a local tendency to actuate said armature in a direction contrary to each said movement, and other windings on said electromagnetic relay to hold the armature to one side or the'other in accordance with the direction of current therein in opposition to said local tendency.
  • a very useful feature in the invention consists of means whereby in any of the embodiments described a single adjustment suflices to regulate equally and simultaneously the local retroactive tendency for both directions of movement of the controlling relay armature. Further features will be evident from the following description and accompanying drawing in which Fig. 1 shows diagrammatically a mechanical relay with mechanical retro-action, whilst Fig. 2 shows a similar mechanical relay with electromagnetic retroaction, but mechanically timed and controlled.
  • an armature 1 of a telegraphic or like polarized relay 2 actuates through connecting rod 3 the escapement 4 of a friction clutch the driving member (not shown) of which is rotated at a constant speed by any convenient source of mechanical power (not shown).
  • the driven member 5 rotates a half revolution at each actuation of the relay armature lfrom one side to the other and carries an eccentric pin 6 which actuates a rock shaft 7, through arm 8 fixed thereto and connecting rod 9.
  • a second arm 10 fixed to rockshaft 7 may be utilized to perform various functions in the operation of telegraphic apparatus or may be utilized as shown to make contact alternately with one or the other of two contact screws (11 and 12) by spring contact tongue 13.
  • the arrangement described thus forms a mechanical relay in which arms fixed to the rock shaft 7 are actuated by mechanical power from one position to another in accordance with the movements of the armature 1.
  • Pivoted to a third arm 14 fixed to the rock shaft 7 is another connecting rod 15, which actuates a distance piece 16 alternately between and against two independent levers 17 and 18 pivoted on common pivot pin 19.
  • the levers 17 and 18 are extended beyond the distance piece 16 to engage either side of the armature 1.
  • the opposite ends of the levers are extended beyond the pivot 19 and are connected by pivoted links 20 and 21 to one end of a common spring 22, the tension of which is adjustable by means of lever 23 connected to the other end, and adjusting screw 24.
  • the arrangement of links 20 and 21, spring 22 and lever 28 forms a ready means of adjusting the spring pressure of arms 17 and 18 and in a manner which ensures that this spring pressure is substantially equal for both arms.
  • Lever 17 is now permitted to press against armature 1 under tension of spring 22, whilst lever 18 is moved away from the opposite side. This actuates armature 1 to the left again and actuates the mechanical relay a further half revolution.
  • This action is continuous and if the driving member of the clutch of the mechanical relay is rotated at a constantspeed, the controlling armature 1 of the electromagnetic relay and the actuated member 10 on rock shaft 7 will be maintained in oscillation at a frequency which is determined by the speed of the driving member of the. mechanicalrelay. It will be noticed that this mechanical retroaction does not immediately oppose and reverse the movement of armature 1 which has caused it. This is effected during the half revolution of the clutch escapement which follows the movement of armature 1.
  • Armature 1 is therefore sprung firmly from one position to the other at each actuation.
  • the actuated member 8 is also firmly and decisively carried from one position to the other at each release of the driving member (not shown) by escapement 1. The oscillations are therefore completely formed.
  • additional windings 25 and 26 are provided on the relay and are connected as shown to two contact screws 27 and 28.
  • Contact tongue 29 actuated by the rock shaft 7 of the mechanical relay oscillates between these two contact screws and is connected to one pole of a local battery 80.
  • the other pole of the battery is connected through an adjustable resistance 31 to the junction of the additional windings 25 and 26.
  • This arrangement provides electromagnetic retroaction which is controlled by the movements of the mechanical actuated member of the mechanical relay, i. e. rock shaft 7.
  • a relay comprising an armature operable between two positions, a member likewise operable for effect- M tion of current therein in oppositionto said local means.
  • a relay comprise ing a magnet an armature therefor operable between two positions, a distance piece actuated by mechanical power upon each movement of said armature in a direction contrary 1 to said movement two independent levers each in operative relation w1th one side of said armature and said distance piece, spring means acting on said levers tending to cause said armature to follow the movement of said distance piece, and windings associated with said magnet adapted to hold the said armature to one side or the other in accordance with the direction of current in said windings in opposition to said spring means.
  • a relay comprising a magnet, an armature therefor operable between two positions, switch contacts actuated by mechanical power from one position to another upon each movement of said armature, windings associated with said magnet in circuit with a local source of electrical energy and said switch contacts causing a local tendency to actuate said armature in a direction contrary to each said movement, and other windings associated with said magnet adapted to hold said armature to one side or the other in accordance with the direction of current in said other windings in opposition to said local tendency.
  • a relay comprising a magnet, an armature therefor operable between two positions, a contact tongue actuated'by mechanical power from one contact stop to another upon each movement of said armature, two windings associated with said magnet the junction of which two windings is connected through an adjustable resistance and local source of electrical energy to said contact tongue and of which the two extremities of said windings are connected to the two said contact stops respectively, and a third winding associated with said magnet adapted to hold said armature to one side or'the other in accordance with the direction of current in said third winding in opposition to a current in either of said two windings.
  • a relay comprising a magnet, an armature therefor operable between two positions, a distance piece actuated by mechanical power upon each movement of said armature in a direction contrary to said movement, two independent levers between which said armature and said distance piece are adapted to operate, a spring connected by individual links at one end to an extension on each of said levers, screw adjusting means connected to the other end of said spring, and windings associated with said magnet adapted to hold said armature to one side or the other in accordance with the direction of current in said windings in oppsition to said spring.
  • a relay comprising a magnet, an armature therefor, an escapement actuated by said armature to release the driven member of a power transmission clutch for half a revolution only at each movement of said armature, an eccentric on the driven member of said clutch actuating a rockshaft alternately at each half revolution through a small angle, retroactive means controlled by said rockshaft causing a tendency to actuate said armature in a direction contrary to each initiating movement of said armature, and windings associated with said magnet adapted to hold said armature to one side or the other in accordance with the direction of current in said windings in opposition to said retroactive means.
  • each of said levers having an effective restoring force less than the holding force of said relay when energized.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
US432828A 1930-01-01 1930-03-03 Mechanically actuated vibrating relay Expired - Lifetime US1879523A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53/30A GB346003A (en) 1930-01-01 1930-01-01 Improvements relating to electro-mechanical vibrating relays

Publications (1)

Publication Number Publication Date
US1879523A true US1879523A (en) 1932-09-27

Family

ID=9697556

Family Applications (1)

Application Number Title Priority Date Filing Date
US432828A Expired - Lifetime US1879523A (en) 1930-01-01 1930-03-03 Mechanically actuated vibrating relay

Country Status (3)

Country Link
US (1) US1879523A (de)
DE (1) DE565168C (de)
GB (1) GB346003A (de)

Also Published As

Publication number Publication date
GB346003A (en) 1931-04-01
DE565168C (de) 1932-11-26

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