US2798917A - Solenoid actuated interrelated locking means for flow controls in a plurality of independent channels - Google Patents

Solenoid actuated interrelated locking means for flow controls in a plurality of independent channels Download PDF

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US2798917A
US2798917A US45236854A US2798917A US 2798917 A US2798917 A US 2798917A US 45236854 A US45236854 A US 45236854A US 2798917 A US2798917 A US 2798917A
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Prior art keywords
relay
interrelated
channels
armature
circuit
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Hendricks George Donald
Rambo George Leland
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EAGLE SIGNAL Corp
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EAGLE SIGNAL CORP
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    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86919—Sequentially closing and opening alternately seating flow controllers

Definitions

  • the invention relates to solenoid actuated interrelated means for locking any one of a number of control devices, each controlling flow through its own channel, either in the position to permit flow, or to prevent flow, through that channel.
  • the invention is applicated to a plurality of channels each carrying a fluid and provided with a valve controlling flow of fluid through the channel, or to a plurality of channels each carrying an electric current and provided with a switch controlling the flow of current through the channel.
  • the essence of the invention lies in solenoid actuated means that will, upon actuation of the control device of one of a plurality of channels, lock that control device in actuated position and, in so doing, will release any other control device previously locked to allow each of these other control devices to assume its original position.
  • the invention provides a series of compact relay units, each actuated by its own solenoid, and so designed that upon actuation of a relay the circuits to be closed are closed without rebound of one contact relative to the other, avoiding the sending of an interrupted current that might cause devices to respond several times when only a single response is intended.
  • one channel may be closed or opened and the act of placing that channel in that condition will take the other channels that have been previously placed in that condition out of that condition.
  • the channel may be placed in operation by sending a current through a relay.
  • the relay will then actuate the control device in that channel and, in so doing, will lock itself in actuated position and remain in that position even though the current through the relay ceases. Further, in the act of locking itself, the relay will release any other relays in the group that have been previously locked.
  • a distinctive feature of the present invention is that the circuit that is closed is closed with less chance of bouncing of the movable contact engaged in the closure relative to the fixed contact, than in existing interlocked relays. Any sensitive device in the circuit, responsive to each current flow, will not erroneously be caused to respond more than once to a single actuation of the relay.
  • the invention is illustrated by channels whose control devices are mechanically interrelated.
  • the invention may be applied to transmission systems feeding power or signals over a single channel that branches oil into a number of channels each leading to a ditierent power actuated device by placing a control device in each of these channels and closing the circuit to one of the relays to establish a circuit through one channel.
  • the current to the relay need only flow long enough to lock that relay and open the relays on the other channels so that only one of the devices receives current.
  • the invention provides a more compact and novel apparatus for accomplishing the desired end than has been hitherto available.
  • the object of the invention is to provide simple means whereby the locking of the control in one of a plurality of channels will unlock the controls in the other channels without requiring continuous current through a relay.
  • a further object of the invention is to actuate the switch in one of a plurality of electrical circuits, the act of actuating the switch locking it in its actuated position and automatically releasing any of the switches in the other circuits that were previously locked.
  • a further object of the invention is to provide mechanical interlocking means for a plurality of relays, each relay so designed as to reduce the weight of the armature and its range of motion to minimize the tendency of the closure of that circuit to be subject to interruption by vibration.
  • Figure 1 is a plan view of a portion of a unit showing four circuits which illustrates the invention.
  • Figure 2 is a vertical section taken along lines 2-2 in Figure 1 showing a circuit latched.
  • Figure 3 is a partial vertical section taken along lines 3-3 in Figure 1 drawn to a larger scale.
  • Figure 4 is a rear elevation of one of the units.
  • Figure 5 is an elevation, similar to Figure 2, showing a modification.
  • the invention will be illustrated by describing an electrically actuated group of switches in a plurality of channels.
  • a base 1, supported on pads 2,- carries units A, B, C, D.
  • the base 1 may be a metal stamping having portions 3 at each end that are bent upward to form posts. At least one of these posts 3 has a horizontal extension 4. A rod 5 passes through holes in each'of these posts.
  • a pawl-plate 6 has upturned ends 7, each end being pierced to allow rod 5 to pass through these ends. Thus the plate acts as pawl, see Figure 3, that swing about rod 5.
  • a coil spring 8, under light tension, has its ends attached to the pawl-plate 6 and the extension 4 to bias the pawl 6 to turn clockwise in Figure 3.
  • the pawl may have an extension 9 to permit manual movement of thepawl.
  • the solenoid actuated units are designed to be compact, light in weight to facilitate prompt movement of the parts, with contacts so arranged that once a circuit is closed or broken, there will be no blurring by vibrating or bouncing contacts.
  • The-armature 17 also carries a slot 24 thrdughwhich -the latch ba r- '25 extends. I The lower end of the latch bar is guided by'hole 27 in base. 1..:'The.n pper-end of the latch bar carries a finger 26 that rests on the a rrn ature so-that, as the armature is elevated by spring 22,
  • the latchbar has a -notch 28, and a recess 29 separated -by arise30.
  • the pawl 6 is adapted to rest either in notch 28 or inrecess 29 but is-rocked by the rise 30 as the latchLban-moves downward-so that the-pawlthat was in recess-29 will bear againstnotch 28.
  • This plate as shown in Figure 1, carries two terminals 33, 34 that-are connected to lines 31, 32-leading to solenoid 19.
  • the switch ar m carriescontact42.
  • the electrical circuit is closed orcpened by a-single contact 42 carriedby switch arm 41 which engages either contacts -38 or 44.
  • the insulatingplate 35 al so-carri es an additional bent plate 43 having a termina1 45 and a I contact 44.
  • a terminal 46 carried by plate :35 is connected -by a cable 47 to switch arm 41.
  • Each-of the solenoids 19 is connected through its terminals 33, 34-with a circuitthat is energized whenthat circuit which is connected to that pair ofterminalsis 60 to be connected up and the other. circuits interrupted.
  • any other unit is, latched, this, will..,release the armature of that circuit and break that circuit before the latch bar engages notch 30 and thus locks that switch 41.
  • the device can 10 be used in the same manner to keep all buttone circuit closed and to permit the opening of anyone circuit by energizing the relay in that 'circuitjvhich will 'close any switch in the other circuits that have been previously repelled.
  • valve 501 mayhcutoflf the flowinto 1ine 52.
  • fluid may ,-be-..drained, ,out..of line 52,.to, a sump.thr ough. line v53. -,It will bevunderstood that valve 501maybe of any othertype.
  • valve 50 is placed in its other position and held'there.
  • the act .of locking will .release,,in the manner ,already described, ,.the ,armatures 17. connected to the other valves in the. other channels.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)

Description

y 1957 G. D. HENDRICKS ETAL 2,798,917
SOLENOID ACTUATED INTERRELATED LOCKING MEANS FOR FLOW CONTROLS IN A PLURALITY OF INDEPENDENT CHANNELS Filed Aug. 26, 1954 INVENTORS 6, DONALD HENDRICKS GEORGE LELAND RAMBO F LL cjc/ -m Attorney United States Patent The invention relates to solenoid actuated interrelated means for locking any one of a number of control devices, each controlling flow through its own channel, either in the position to permit flow, or to prevent flow, through that channel.
The invention is applicated to a plurality of channels each carrying a fluid and provided with a valve controlling flow of fluid through the channel, or to a plurality of channels each carrying an electric current and provided with a switch controlling the flow of current through the channel.
The essence of the invention lies in solenoid actuated means that will, upon actuation of the control device of one of a plurality of channels, lock that control device in actuated position and, in so doing, will release any other control device previously locked to allow each of these other control devices to assume its original position.
The invention provides a series of compact relay units, each actuated by its own solenoid, and so designed that upon actuation of a relay the circuits to be closed are closed without rebound of one contact relative to the other, avoiding the sending of an interrupted current that might cause devices to respond several times when only a single response is intended.
Thus, where it is desired that only one channel shall be in operation at a time, one channel may be closed or opened and the act of placing that channel in that condition will take the other channels that have been previously placed in that condition out of that condition.
The channel may be placed in operation by sending a current through a relay. The relay will then actuate the control device in that channel and, in so doing, will lock itself in actuated position and remain in that position even though the current through the relay ceases. Further, in the act of locking itself, the relay will release any other relays in the group that have been previously locked.
One of the advantages olfered by the use of such interrelated control latching means is that the current on a relay need not be maintained after the relay is latched. If the current had to be maintained on a relay to hold it in activated position heat would be generated which would have serious drawbacks where the relays are in a closed compartment and the current may flow through the relays for hours at a time.
A distinctive feature of the present invention is that the circuit that is closed is closed with less chance of bouncing of the movable contact engaged in the closure relative to the fixed contact, than in existing interlocked relays. Any sensitive device in the circuit, responsive to each current flow, will not erroneously be caused to respond more than once to a single actuation of the relay.
The invention is illustrated by channels whose control devices are mechanically interrelated.
In a modified form of the invention all the channels in a group function except one channel, and upon actuation of a relay connected to another channel, that other channel will become inactive and the act of latching that channel in the inactive position will cause all other channels that are not already closed to function.
Fatented July 9, 1957 The invention may be applied to transmission systems feeding power or signals over a single channel that branches oil into a number of channels each leading to a ditierent power actuated device by placing a control device in each of these channels and closing the circuit to one of the relays to establish a circuit through one channel. The current to the relay need only flow long enough to lock that relay and open the relays on the other channels so that only one of the devices receives current.
The mechanical device that unlocks the other controls or switches is very much simpler than electric circuits to achieve the same result. Such circuits are shown in Figure 6 in an application entitled Replacement of a Plurality of'Channels by a Single Channel, filed on September 2, 1953, by Donald Hendricks et a1. and bearing Serial Number 378,057.
While interrelated relays have been known, the invention provides a more compact and novel apparatus for accomplishing the desired end than has been hitherto available.
The object of the invention is to provide simple means whereby the locking of the control in one of a plurality of channels will unlock the controls in the other channels without requiring continuous current through a relay.
A further object of the invention is to actuate the switch in one of a plurality of electrical circuits, the act of actuating the switch locking it in its actuated position and automatically releasing any of the switches in the other circuits that were previously locked.
A further object of the invention is to provide mechanical interlocking means for a plurality of relays, each relay so designed as to reduce the weight of the armature and its range of motion to minimize the tendency of the closure of that circuit to be subject to interruption by vibration.
Figure 1 is a plan view of a portion of a unit showing four circuits which illustrates the invention.
Figure 2 is a vertical section taken along lines 2-2 in Figure 1 showing a circuit latched.
Figure 3 is a partial vertical section taken along lines 3-3 in Figure 1 drawn to a larger scale.
Figure 4 is a rear elevation of one of the units.
Figure 5 is an elevation, similar to Figure 2, showing a modification.
The invention will be illustrated by describing an electrically actuated group of switches in a plurality of channels.
There may be any number of solenoid actuated units; four units A, B, C, D are shown by way of illustration. As the units are duplicates of each other, only unit A will be described in detail.
A base 1, supported on pads 2,- carries units A, B, C, D.
The base 1 may be a metal stamping having portions 3 at each end that are bent upward to form posts. At least one of these posts 3 has a horizontal extension 4. A rod 5 passes through holes in each'of these posts.
A pawl-plate 6 has upturned ends 7, each end being pierced to allow rod 5 to pass through these ends. Thus the plate acts as pawl, see Figure 3, that swing about rod 5. A coil spring 8, under light tension, has its ends attached to the pawl-plate 6 and the extension 4 to bias the pawl 6 to turn clockwise in Figure 3. The pawl may have an extension 9 to permit manual movement of thepawl.
The solenoid actuated units are designed to be compact, light in weight to facilitate prompt movement of the parts, with contacts so arranged that once a circuit is closed or broken, there will be no blurring by vibrating or bouncing contacts.
, 3 Each ofthe units A, B, C, D has a. plate .IOattached to the base which has a vertical section 11. Supported on this plate is a U-shaped stamping 12 having vertical legs 13, 14. The stamping 12. may have an'orientation hole into which the end of plate fits as-shown insection in Figure 2. Leg 14 extends upward and carries a horizontal pivot 16. This U-shapedpiece 12 also supports a solenoid :19. -An armature 11 for=thissolenoid, has ears 18 thatpivot at16. :The armature has a rearward extension 21. -A tension spring 22- has its ends connected respectively, to this: extensionandto the-lowerpart of leg 14. This-spring tends to lift the right hand end of the armature, as seen in Figure 2. Tolimit the upward motion'of the armature,=it is pro- '-vided with a holethrough which the-bentstop 23, attached to-leg 13 of the- U-shaped. piece extends.
The-armature 17 also carries a slot 24 thrdughwhich -the latch ba r- '25 extends. I The lower end of the latch bar is guided by'hole 27 in base. 1..:'The.n pper-end of the latch bar carries a finger 26 that rests on the a rrn ature so-that, as the armature is elevated by spring 22,
- the'latch bar-too will be elevated. --The latchbar has a -notch 28, and a recess 29 separated -by arise30. -The pawl 6 is adapted to rest either in notch 28 or inrecess 29 but is-rocked by the rise 30 as the latchLban-moves downward-so that the-pawlthat was in recess-29 will bear againstnotch 28.
- An insulating plate is attached to vertical leg 11 of plate 10.
This plate, as shown in Figure 1, carries two terminals 33, 34 that-are connected to lines 31, 32-leading to solenoid 19.
which; the switch-arm .41 is mounted. The switch ar m carriescontact42.
It-will be obvious thatifthe holes 27 in thebase 1 arestamped along a line, and the plates -10 attached to the base in such alignment that each upturned end of the plate will place the orientation-hole of each stamping 12 in the same position relative to oneof the holes -27, the several units A, B, C,;D may be duplicates.
The stamping 12 -places the pivot -16 close to the sole- -n0id -19, providing ashort, light, armature 17.
The electrical circuit is closed orcpened by a-single contact 42 carriedby switch arm 41 which engages either contacts -38 or 44.
Since the distance of contact 42 from the pivot 16 is comparable-to the distance the solenoidaxis is from -the pivot,-only a small rocking movement of the a rmature is needed which cuts the efiect of inertia.
U In-a modified form the insulatingplate 35 al so-carri es an additional bent plate 43 having a termina1 45 and a I contact 44.
A terminal 46 carried by plate :35 is connected -by a cable 47 to switch arm 41.
: Whenthe device is installed,-each circuit is connected withterminals 37 and '46 in oneof the units A, B, C, v D. To complete the circuit, the armature must be in its latchedposition with pawl 6 lying against notch'28.
Each-of the solenoids 19 is connected through its terminals 33, 34-with a circuitthat is energized whenthat circuit which is connected to that pair ofterminalsis 60 to be connected up and the other. circuits interrupted.
' After the various terminals havethus been connected up, the extension 9;of the pawl is manually elevated which allows each armature to rise and carry its-latch bar upward so that the pawl 6 enters recess-29bfthe latch bar ofeach unit.
the latch bar in that unit total andin 'so doing, the
rise 30 will rock the pawl 6 to releasing position. 'If
4 any other unit is, latched, this, will..,release the armature of that circuit and break that circuit before the latch bar engages notch 30 and thus locks that switch 41.
Even though the current through the solenoid ceases, ,the latched relay will maintain that circuit totransmit any current or any signals that may besent over the circuit closed by switch 41. i
Obviously if the piece. 36gwas connected. to each of the circuits through terminals 46 and 45, the device can 10 be used in the same manner to keep all buttone circuit closed and to permit the opening of anyone circuit by energizing the relay in that 'circuitjvhich will 'close any switch in the other circuits that have been previously repelled.
a 1 Or,,if1b0th, terrnina1s;37;,and 45 are.;conne.ted making .the switches actuated by arm ,41'.' .do uble throw swi ches,=- he device..mayhez sedtorthrow.:alL butthe circuit that is being switched from...0ne 0f:; the ;;,d0nble 0: thr 0W; pQSit lOnS to, thenother.
In the modification shownvin Figure 5,,;the, armature 17 of, the relay coil. 19, is1 connectedtothe stem of the valve 50. Thisvalve maybesupplied withfluid through a line 51 and mayin oneposition, connectthe line 51 to line 52 leading to some device and, in the other, po-
7 sition mayhcutoflf the flowinto 1ine 52. In the.latter position-the; fluid may ,-be-..drained, ,out..of line 52,.to, a sump.thr ough. line v53. -,It will bevunderstood that valve 501maybe of any othertype.
,In, this modification, ifwthesolenoidulilvin Figure, 5
-is actuated, it is locked as previously described and .the valve 50 is placed in its other position and held'there. The act .of locking will .release,,in the manner ,already described, ,.the ,armatures 17. connected to the other valves in the. other channels.
. We claim:
-.A low-inertia. multiple relay,; having, in ,combination,
, a base plate, a.,plurality. 10f duplicate ,units mounted on said base plate, arU=shapedlstampingin,eachof said units, a solenoid mounted on the, base of each ,U.-shaped 1stamping,..an,armature pivoted on one arm of. each stampinghaving a slot through which ahookedexten- .sion on the .other; arm .ofthestamping. extends to, limit ,the movement. of .thearmature, avsecond slot in each .armature, aguide hole .in the base. below each of said warmatureslots, a, latch bar.which hooksrinto the secvond slotinithe armatureand extends into aguide hole,
two ,notcheslon each. latchbar, a raised portion between ;.said.. notches, a pawlbanhinged on the base and biased -so; that the longitudinal edge "of vthe. .pawl .bar' enters one rot saidnotch'esjm the .latchbarlconnectedtto an actuated armature and into the other notch in the. latch bars con- .nec'ted .to non-actuated .armatures, a spring. lbiasing ,each
.. armature,. a contact .bar.carriedl.byathe .armature .and
55.;extendirig to a pointatleastia's far distantfrom thearma- ...ture vpivot as. theaxis lofthe solenoid. hutin the opposite ;i.direction, .a.stationary contact engaged .by ,said contact nlbar;;wh en. the actuation of. the. solenoid. has .moved the latchbar .so .that.the pawl, bar. enters the. propernotch 6 and in the movement of thellatch barthe pawl bar has been rockedto release theJatch bars oi the other armattures.
'References .Cited. in thefile of this patent UNITED STATES PATENTS 6862,08 1 Lorimer v,J uly 30, 19 07 1,083,810. Engberg -QJan. 6,1914 1 1,534,010 T.-.Clark"e a ;11,I19'26 1,643,415 Moore ,Sept. 27,-.1927 2,114,968 Neinet a1. '-;A r. 19, .1938 "2,146,269 ;P uerner' Feb.'7, 1939 2,405,319 IMcMaste'r t at. Aug... 6,119.46 2,471,181 .wi1s6n Ma 24; 19.49
- aronnrom rArnNrs 946,652 France Dec; 27, 1948
US45236854 1954-08-26 1954-08-26 Solenoid actuated interrelated locking means for flow controls in a plurality of independent channels Expired - Lifetime US2798917A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202785A (en) * 1960-03-10 1965-08-24 Crabtree & Co Ltd J A Electromagnetic relay with an interchangeable contact mechanism

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US862084A (en) * 1902-07-22 1907-07-30 Lorimer Automatic Telephone Company Relay and sounder.
US1083810A (en) * 1912-11-09 1914-01-06 Engberg S Electric And Mechanical Works Electrohydraulic controller.
US1584010A (en) * 1923-11-12 1926-05-11 Mitchell Co R Electrical switch
US1643415A (en) * 1927-09-27 Automatic circuit bbeakeb
US2114968A (en) * 1935-03-13 1938-04-19 Automatic Signal Corp Traffic control apparatus
US2146269A (en) * 1937-09-11 1939-02-07 Mallory & Co Inc P R Push-button switch
US2405319A (en) * 1943-03-10 1946-08-06 G M Lab Inc Relay
US2471181A (en) * 1942-11-30 1949-05-24 Honeywell Regulator Co Relay
FR946652A (en) * 1947-05-06 1949-06-10 Electric combiner for controlling the lighting of sound and light warning devices and direction signals on motor vehicles and others

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1643415A (en) * 1927-09-27 Automatic circuit bbeakeb
US862084A (en) * 1902-07-22 1907-07-30 Lorimer Automatic Telephone Company Relay and sounder.
US1083810A (en) * 1912-11-09 1914-01-06 Engberg S Electric And Mechanical Works Electrohydraulic controller.
US1584010A (en) * 1923-11-12 1926-05-11 Mitchell Co R Electrical switch
US2114968A (en) * 1935-03-13 1938-04-19 Automatic Signal Corp Traffic control apparatus
US2146269A (en) * 1937-09-11 1939-02-07 Mallory & Co Inc P R Push-button switch
US2471181A (en) * 1942-11-30 1949-05-24 Honeywell Regulator Co Relay
US2405319A (en) * 1943-03-10 1946-08-06 G M Lab Inc Relay
FR946652A (en) * 1947-05-06 1949-06-10 Electric combiner for controlling the lighting of sound and light warning devices and direction signals on motor vehicles and others

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202785A (en) * 1960-03-10 1965-08-24 Crabtree & Co Ltd J A Electromagnetic relay with an interchangeable contact mechanism

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