US2494015A - Permutation electric switch - Google Patents

Permutation electric switch Download PDF

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Publication number
US2494015A
US2494015A US788246A US78824647A US2494015A US 2494015 A US2494015 A US 2494015A US 788246 A US788246 A US 788246A US 78824647 A US78824647 A US 78824647A US 2494015 A US2494015 A US 2494015A
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United States
Prior art keywords
switch
rods
circuit
disc
permutation
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Expired - Lifetime
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US788246A
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English (en)
Inventor
Tate William Leonard
Oakes Arthur Aloysius
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Individual
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Individual
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Publication of US2494015A publication Critical patent/US2494015A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/10—Switch operated by setting members according to a single predetermined combination out of several possible settings
    • 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
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/7311—Step-by-step

Definitions

  • This invention relates to a permutation electric switch which, while suitable for controlling electric circuits generally, is particularly applicable for controlling the ignition circuit on a motor car or like motor road vehicle.
  • An object of the invention is to provide for the said purpose an improved permutation switch of the kind comprising a movable member and a plurality of rods operable, against resilient means such as springs, by means of push buttons WhlCh are identified by associated numerals, letters or other symbols, a selected plurality of said rods being adapted when actuated in predetermined sequence to effect progressive movement of a member which at the end of such movement closes the electric circuit.
  • the improved permutation switch comprises a movable member, such as a plate, disc or the like, having a series of slots therein, a plurality of push-button operated rods each slidably traversing one of said slots and thereby limiting movement in opposite directions of said member, switch means associated with the movable member disposed to close the electric circuit by displacement of the member to one operative limit of its movement and to open said circuit by return of the member towards its opposite inoperative limit, a selected plurality of the rods being adapted when operated in predetermined sequence to displace the member progressively to said operative limit, and the remainder of the rods being each adapted to return the member to its inoperative limit.
  • Fig. 1 being an elevation
  • Fig. 2 a plan and Fig. 3 a linear developed elevation of the circular row of push buttons for operating the switch.
  • Fig. 4a is a plan of the rotatable plate in the switch and Fig. 4 is a section on the line 4-4, Fig. 1.
  • Fig. 5 is a fragmentary View showing the position of the switch arm when the ignition circuit is open and the indicator or pilot light glowing
  • Fig. 6 being a similar fragmentary view showing the position of the switch arm closing the ignition circuit.
  • Fig. '7 is a fragmentary elevation of one push button providing a warning signal for closing the horn circuit of the car
  • Fig. 8 being a side view of Fig. 7.
  • Fig. 9 is a view similar to Fig. '7 showing the push button depressed and retained in position closing the horn circuit.
  • Fig. 10 is a fragmentary elevation partly in section
  • Fig. 11 an inverted plan of a switch control for the indicator pilot light.
  • Fig. 12 is a fragmentary elevation and Fig. 13 a plan of the horn circuit-closing switch actuated by lifting the engine bonnet of the car.
  • a permutation switch applicable for controlling the ignition circuit of a motor car is illustrated in the accompanying drawings, and comprises a framed casing consisting of three plates I, 2, 3 spaced apart and connected by posts 4, the upper and. lower plates I and 3 being preferably of fibre or some insulating material.
  • the framed casing is set in an aperture in, say, the dashboard 5 of the car, and mounted to slide transversely in the three plates l, 2, 3 are a number of push buttons 6 under spring controls I, and each having a collar la urged by the spring against the underface of the upper plate l.
  • Rotatably mounted on a pivot 8 in the casing is a disc 9, having therein a number of separated slots [0 circularly arranged, Fig. 4a.
  • the rods of the push buttons 6 slide in the slots l0 when th buttons are depressed and the parts I i of the rods engaging the slots are of square section, Fig. 4, so that they cannot rotate in the slots, and each rod is provided with a wedge or like shaped fin 12 or l3, the inclined side of which is adapted when depressed to engage any edge of the slot which it overhangs and so impart to the disc 9 a certain angular movement.
  • the rods are in two groups, the fins [2 of one groupwhich may be termed the effective group-- pointing in one direction round the disc 9 and the fins I3 of the other or ineffective group pointing in the reverse direction, so that while operation of any rod of the l3 group imparts clockwise movement to the disc 9, any rod of the I2 group imparts anti-clockwise movement.
  • the push buttons 6 by which the rods are actuated carry various indicating numbers as shown, and/or letters, and by pressing the efiective buttons consecutively in a known code sequence the disc 9 will be rotated by the fins l2 step by step and uni-directionally to an operative limiting position to actuate a switch closing the ignition circuit of the car.
  • the effective buttons of the code for closing the switch are those numbered 9, 4, 1, '7 to be operated in that sequence, and in order that the movable disc 9 cannot be operated by depression of the effective push button-s in other than the correct sequence their Wedge shaped fins I2, except the fin on the rod of the button numbered 9 which is to be operated first in the correct code sequence, all have a step 14 at the fin base which prevents th ir being depressed until the wedge fin of the rod to be previously operated in the correct sequence has been already operated.
  • the fin l2 of the rod of the button numbered 9 to be first operated in the code sequence terminates gradually into its rod, the maximum projection of the oblique edge corresponding to the extent of the base step M of the fin E2 on the second rod button numbered 4 of th code sequence, the maximum projection of the oblique edge ii of such second fin determining the extent of the base step M on the third rod button numbered 1 of the code sequence, and so on, so that prior depression of the second or third buttons in the code is prevented b the base steps of the fins overhanging the operative edge beneath of the slot in the movable disc 9, until such edge has first been moved clear of the base step by rotation of the disc 9 by a rod previously operated in correct sequence.
  • the correct and complete operation of the disc 9 by the known code sequence of buttons moves the disc, as indicated by the arrow, Fig. 6, to a position such that a roller 40 or other contact on the disc engages the T-head it of a rocking arm ll pivoted at IS on the lower plate 3 and throws over the arm to engage one contact 12 of a switch and close the ignition circuit a of the car. If, however, any one of the ineffective push buttons be operated, the disc 9 will be rotated in the opposite direction indicated by the arrow, Fig. 5, the roller 41'] throwing over the arm I? to the other switch contact 8 9 opening the ignition circuit and closing the circuit 1) of a pilot or indicator light at some convenient position on the dashboard.
  • the pilot 26] is thus normally on when the ignition circuit is open, but out when the switch is closed.
  • the rocking arm ll of the switch is spring-controlled so that it tends normally to move to the position Fig. 5 interrupting the ignition circuit and closing the pilot light circuit.
  • the pilot light 29 will be cut out, the extinguishing of which thus denotes that the ignition circuit is closed, so that if the mechanism be in correct working order it is impossible for the ignition circuit to be closed and the pilot light to be on at the same time.
  • the contact head It of the switch arm H may be curved or recessed for engagement by the roller 40 to obtain a more eifective closing and opening action of the switch.
  • buttons rods in the efiective group carry contacts which, when such rods are depressed, engage other contacts, thus closing the circuit of the electric horn of the car to give an audible alarm that the device is being tampered with.
  • Figs. 7 to 9 Such an arrangement is illustrated in Figs. 7 to 9 where the sliding rod ll of one of the push buttons 6 carries a bent spring contact 2i adapted to engage a contact 22 carried on an insulating arm 23 on the rotatable disc 9. Normally the relative positions of the two contacts would be shown in Fig. '7 but if the button 6 be depressed the contact 2! ultimately clicks beneath the contact 22 to close the circuit 0 of the horn 24, Fig. 8.
  • the hooked formation of the contactcarrying arm 23 retains the contact 21 in engagement as the rod rises under its spring control ll, so that the horn will continue to sound until the disc 9 is rotated by pressure of certain buttons of the code sequence carrying the contact 22 sidewise and moving it clear of contact 2! and opening th horn circuit.
  • Figs. 10 and 11 consistin of a tubular member 25 in which the pilot light 25 is housed and which is rotatable in the fibre or other insulating plate I of the device, the tubular housing having a projecting switch arm 28 movable into engagement with a fixed terminal contact 21 when the light is required, but by turnin the member 25 the contacts are separated to open the circuit.
  • a device shown in Figs. 12 and 13 may be provided.
  • This consists of a contact 28 sliding in an insulating block 29 and urged by a spring 3t, one wire of the horn circuit 0 being connected to this sliding contact.
  • Another fixed contact 35 insulated in a block 32 is connected to the other wire of the horn circuit.
  • the contacts 28, iii are separated as shown and the horn circuit interrupted by an insulating member 33 carried on the lower edge of a side wing 34 of the engine bonnet.
  • the contact 28 will make contact with the contact 3! to close the circuit 0 and sound the horn.
  • Means may be provided for rendering the horn circuit closing action of the contacts 28, 35 inoperative, when desired, and such means may be operated by depressing certain of the effective buttons 6 of the device.
  • circuit closing buttons may be provided in the ca sing if desired, one 13, Fig. 2, for the side lights and another 44 for the headlights.
  • any desired variation of the code number or lettering may be obtained by changing the position of the push buttons and rods and in this way the tamper-proof effectiveness of the device rendered very secure.
  • a permutation switch for controlling an electric circuit comprisin a movable switch-actuating member having a series of slots therein, a plurality of push-button operated rods each slidably traversing one of said slots and thereby limiting movement in opposite directions of said member, switch means operable to close the electric circuit by said member on its displacement to the one operative limit of its movement and to open the circuit by the member returning towards its opposite, inoperative limit, a selected plurality of the rods having each one of a series of progressively larger wedge-shaped fins extending towards said operative limit and engageable in the slots to effect successively greater step-wise displacements of the member to said operative limit, and the remainder of the rods having each a wedge-shaped fin extending towards said inoperative limit and engageable in on of the slots to effect displacement or" the member towards its inoperative limit.
  • each of the progressively larger fins has at its base and bearing on the movable member a step which corresponds in extent to the maximum projection of the fin on the rod having prior operation in the permutation sequence, such base step preventing operation of any of said selected rods out of its predetermined sequence .by overhanging the edge of the slot in which its rod slides until such edge is moved clear of the base step upon displacement of the member by operation of the rod previously actuable in the sequence.
  • a permutation switch for controlling an electric circuit comprising a turnable switchactuating disc having a circular series of slots therein, a plurality of push-button operated rods each slidably traversing one of said slots and thereby limiting movement in both directions of the disc, switch means operable to close the electric circuit by said disc turning to the one operative limit of its movement and to open the circuit by the disc returning towards its opposite, inoperative limit, a selected plurality of the rods having each one of a series of progressively larger wedge-shaped fins extending towards said operative limit and engageable in the slots to effect successively greater step-wise displacements of the disc to said operative limit, and the remainder of the rods having each a wedge-shaped fin extending towards said inoperative limit and engageable in one of the slots to effect displacement of the disc to said inoperative limit.
  • a permutation switch for controlling an electric circuit comprising a movable switch-actuating member, a, plurality of push-button operated rods, means on said rods engageable with abutments on said member under sequential operation of the rods to effect successively greater displacements of the member to an operative limit, and switch means operable by the member at said limit to close the electric circuit, having in combination a further plurality of like rods and in assocation with each of said rods a projection engageable under operation of the rod with one of the abutments on the member to effect positive displacement of the movable member from its switch-actuating limit.
  • a permutation switch for controlling an electric circuit comprising a turnable switch-actuating disc, a plurality of pushbutton operated rods, means on said rods engageable with abutments on said disc under sequential operation of the rods to eiiect successively greater angular displacements of the disc to an operative limit, and switch means operable by the disc at said limit to close the electric circuit, having in combination a further plurality of like rods and in association with each of said further rods a projection engageable under operation of the rod with one of the abutments on the disc to efiect positive displacement of the disc from its switch-actuatin limit.

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  • Push-Button Switches (AREA)
  • Burglar Alarm Systems (AREA)
US788246A 1946-03-20 1947-11-26 Permutation electric switch Expired - Lifetime US2494015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8572/46A GB609656A (en) 1946-03-20 1946-03-20 A permutation electric switch

Publications (1)

Publication Number Publication Date
US2494015A true US2494015A (en) 1950-01-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
US788246A Expired - Lifetime US2494015A (en) 1946-03-20 1947-11-26 Permutation electric switch

Country Status (3)

Country Link
US (1) US2494015A (de)
FR (1) FR956054A (de)
GB (1) GB609656A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640346A (en) * 1951-04-27 1953-06-02 Edward S Giffin Combination-operated mechanism
US2718776A (en) * 1953-05-18 1955-09-27 Arthur F Moore Electrical lock
US3251204A (en) * 1964-11-02 1966-05-17 Frederick W Siegel Combination lock for automotive vehicle ignition and hood
DE1239758B (de) * 1962-06-27 1967-05-03 Walter Holzer Drucktastenschalter mit mehreren nebeneinander angeordneten, federbelasteten Drucktasten
DE1640333B1 (de) * 1966-08-26 1971-03-04 Walter Holzer Drucktastenschalter
US3582583A (en) * 1969-12-15 1971-06-01 Stephen Paterson Coded switch
US3722238A (en) * 1971-07-29 1973-03-27 A Ring Remotely operated electrical combination lock
US3777519A (en) * 1971-12-27 1973-12-11 C Germanton Cylindrical geometry pushbutton combination lock
US4827743A (en) * 1988-07-21 1989-05-09 Kim Sung B Combination lock
US20040237610A1 (en) * 2003-06-02 2004-12-02 Po-Yen Lee Combination lock
US20150191935A1 (en) * 2014-01-07 2015-07-09 Dongguan Suoan Industrial Co., Ltd. Environment friendly metal mechanical password lock cylinder capable of setting repeated password keys
US20160002952A1 (en) * 2014-01-07 2016-01-07 Dongguan Suoan Industrial Co., Ltd. Environment friendly metal mechanical password lock cylinder capable of setting repeated password keys

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023114B (de) * 1954-12-21 1958-01-23 Iae G O Ia Elektro Geraetebau Mehrstufenschalter fuer die wahlweise Parallelschaltung, Einzeleinschaltung oder Reihenschaltung von mindestens zwei Heizleitern eines Elektrowaermegeraetes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US993378A (en) * 1910-06-10 1911-05-30 Gould Coupler Co Switch.
US1568483A (en) * 1923-12-13 1926-01-05 James J Tolbert Permutation switch lock
US1704582A (en) * 1925-11-20 1929-03-05 Stephenson John Electrical locking and releasing switch
US1810399A (en) * 1928-01-27 1931-06-16 Paul P Horni Interlocking key assembly
US2442766A (en) * 1945-03-08 1948-06-08 Bell Telephone Labor Inc Circuit controlling switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US993378A (en) * 1910-06-10 1911-05-30 Gould Coupler Co Switch.
US1568483A (en) * 1923-12-13 1926-01-05 James J Tolbert Permutation switch lock
US1704582A (en) * 1925-11-20 1929-03-05 Stephenson John Electrical locking and releasing switch
US1810399A (en) * 1928-01-27 1931-06-16 Paul P Horni Interlocking key assembly
US2442766A (en) * 1945-03-08 1948-06-08 Bell Telephone Labor Inc Circuit controlling switch

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640346A (en) * 1951-04-27 1953-06-02 Edward S Giffin Combination-operated mechanism
US2718776A (en) * 1953-05-18 1955-09-27 Arthur F Moore Electrical lock
DE1239758B (de) * 1962-06-27 1967-05-03 Walter Holzer Drucktastenschalter mit mehreren nebeneinander angeordneten, federbelasteten Drucktasten
US3251204A (en) * 1964-11-02 1966-05-17 Frederick W Siegel Combination lock for automotive vehicle ignition and hood
DE1640333B1 (de) * 1966-08-26 1971-03-04 Walter Holzer Drucktastenschalter
US3582583A (en) * 1969-12-15 1971-06-01 Stephen Paterson Coded switch
US3722238A (en) * 1971-07-29 1973-03-27 A Ring Remotely operated electrical combination lock
US3777519A (en) * 1971-12-27 1973-12-11 C Germanton Cylindrical geometry pushbutton combination lock
US4827743A (en) * 1988-07-21 1989-05-09 Kim Sung B Combination lock
US20040237610A1 (en) * 2003-06-02 2004-12-02 Po-Yen Lee Combination lock
US6837080B2 (en) * 2003-06-02 2005-01-04 Po-Yen Lee Combination lock
US20150191935A1 (en) * 2014-01-07 2015-07-09 Dongguan Suoan Industrial Co., Ltd. Environment friendly metal mechanical password lock cylinder capable of setting repeated password keys
US20160002952A1 (en) * 2014-01-07 2016-01-07 Dongguan Suoan Industrial Co., Ltd. Environment friendly metal mechanical password lock cylinder capable of setting repeated password keys
US9752351B2 (en) * 2014-01-07 2017-09-05 Shenzhen Demika Electronic Technology Co., Ltd. Environment friendly metal mechanical password lock cylinder capable of setting repeated password keys

Also Published As

Publication number Publication date
GB609656A (en) 1948-10-05
FR956054A (de) 1950-01-24

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