US2490906A - Permutation system of series circuit control - Google Patents

Permutation system of series circuit control Download PDF

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Publication number
US2490906A
US2490906A US55564A US5556448A US2490906A US 2490906 A US2490906 A US 2490906A US 55564 A US55564 A US 55564A US 5556448 A US5556448 A US 5556448A US 2490906 A US2490906 A US 2490906A
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United States
Prior art keywords
key
circuit
rods
contact points
contact
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Expired - Lifetime
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US55564A
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Theodore R Hennigar
Harry B Mackay
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Individual
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
    • G07C9/00706—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with conductive components, e.g. pins, wires, metallic strips
    • 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
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7062—Electrical type [e.g., solenoid]
    • Y10T70/7068—Actuated after correct combination recognized [e.g., numerical, alphabetical, or magnet[s] pattern]
    • Y10T70/7073—Including use of a key

Definitions

  • This invention relates to a permutation system of series circuit control, and the object of the in vention is to provide a permutation system for any type of series circuit to make it impossible for an unauthorized person to close said circuit.
  • the invention broadly consists of a system embracing at least two contact points in a series circuit of any type; a like number of normallyclosed self-closing cutout switches in said circuit; a key having at least two current-conducting extensions adapted to contact said points simultaneously to close said circuit therethrough, and normally dormant means intermediate said contact points and said switches adapted to be actuated to open one or both of said switches when a key, having one or more extensions of greater reach than the extensions of said first-mentioned key, is used in an attempt to close said circuit.
  • the invention consists of a system embodying a plurality of staggered contact points in a series circuit of any type, each positioned in a channel longitudinally formed in a suitable panel; a like number of normally-closed self-closing cut-out switches in said panel each reached through a channel in said circuit; a portable key having a like number of parallel key-rods of difierent extension or reach coupled together in pairs and adapted to be passed into said channels to contact said contact points simultaneously to close said circuit therethrough, and a normally dormant rod in each 01 said channels, between said switches and said contact points, adapted to be moved to open any of said switches when moved by a key having an extension of greater reach than said key-rods when an attempt is made to close said circuit.
  • Fig. 1 is a schematic view showing, in section, an embodiment of the system for the control of a. door latch.
  • Fig. 2 is a plan of the inner end of the key.
  • the invention comprises a plurality of key-rods 2, wired together in pairs in spaced relationship, as at 3. These rods essentially reach or extend varying distances beyond a portable support 4, therefore, which, together with said rods, is hereinafter referred to as the key.
  • the said support 4, may be made of any suitable non-conducting material so that the key rods 2 may be insulated from each other. If said-support is made of current-conducting material the key rods 2 must be suitably insulated therefrom.
  • a panel 5 preferably made of any suitable insulating material, is provided with as 2 many parallel channels 6 as there are key-rods 2.
  • These channels are spaced at distance apart equal to the distance separating said key-rods, and are to open at one end through the same side of the panel.
  • Contact points 1 are located with respect to said channels 6, so that when the key-rods 2 are passed thereinto they will make contact with said contact points.
  • the location of said contact points in said channels and the individual length or reach of the key-rods 2, is such that said key-rods simultaneously make contact therewith when they have been fully inserted into said channels.
  • solenoid I3 When the current is closed solenoid I3 is magnetized and withdraws the bolt or latch M from the outer dotted position into the inner dotted position, thus unlocking the door l5.
  • the circuit When the key is removed from the panel, the circuit is opened, and the solenoid demagnetlzed, thus permitting the spring "5 to return the bolt or latch I4 in position to lock the door when it is shut.
  • the current enters through the feed-wire a to the terminal I I, through the key l2 to the terminal l0, through the wire b, through similar terminals and keys into the 'wire 0, and on through like wires and terminals and keys clearly shown to the contact point 1 at the right-hand side of the panel and continues on through the key-rods 2 and wires 3 to the contact points I wired together in the middle of said channel and finally out from 3 the contact point i at the left-hand side of the panel, through the wire 11, and by way of the solenoid [3 into the return wire e, thus completing the circuit.
  • a key having at least two current-conducting extensions adapted to .con- .tact said contact points simultaneously to close said circuit; two normally-closed cut-out switches in said circuit, and normally dormant means in termediate said contact points and'said switches adapted to .be actuated to open one .or both of said cut-out switches when another key, having one or more extension of greater reach thanrthe extensionsof said first-mentioned key --is used in an attempt to close said circuit.
  • a permutation system of series circuit control comprising a circuit; at least two contact points in staggeredrelations in said circuit; akey having at least twocurrent-conducting extensions of diiierent reaches adaptedto contact said contact points simultaneously to close said circuit;
  • a permutation system circuit control a panel, made of suitable insulating material, provided with a plurality of parallel channels each opening at one end through the same side of the panel; a plurality of normally-closed cut-out switches housed in said panel and each accessible from a channel; a contact point in each channel “in “staggered position in relation to its fellows accessible from the open end thereof; a common "series circuit for said switches and contact points;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Description

T. R. HENNIGAR ET AL Filed Oct. 20, 1948 0""0 INSULATION 2 NON COR UCTING s I I RETURN wmc FEED wmz PERMUTATION SYSTEM OF SERIES CIRCUIT CONTROL Dec. 13,1949
Patented Dec. 13, 1949 PERMUTATION SYSTEM OF SERIES CIRCUIT CONTROL Theodore R. Hennigar, Chester Basin, and Harry B. MacKay, Mahone Bay, Nova Scotia, Canada Application October 20, 1948, Serial No. 55,564
3 Claims. 1
This invention relates to a permutation system of series circuit control, and the object of the in vention is to provide a permutation system for any type of series circuit to make it impossible for an unauthorized person to close said circuit.
The invention broadly consists of a system embracing at least two contact points in a series circuit of any type; a like number of normallyclosed self-closing cutout switches in said circuit; a key having at least two current-conducting extensions adapted to contact said points simultaneously to close said circuit therethrough, and normally dormant means intermediate said contact points and said switches adapted to be actuated to open one or both of said switches when a key, having one or more extensions of greater reach than the extensions of said first-mentioned key, is used in an attempt to close said circuit.
In its preferred embodiment, the invention consists of a system embodying a plurality of staggered contact points in a series circuit of any type, each positioned in a channel longitudinally formed in a suitable panel; a like number of normally-closed self-closing cut-out switches in said panel each reached through a channel in said circuit; a portable key having a like number of parallel key-rods of difierent extension or reach coupled together in pairs and adapted to be passed into said channels to contact said contact points simultaneously to close said circuit therethrough, and a normally dormant rod in each 01 said channels, between said switches and said contact points, adapted to be moved to open any of said switches when moved by a key having an extension of greater reach than said key-rods when an attempt is made to close said circuit.
Fig. 1 is a schematic view showing, in section, an embodiment of the system for the control of a. door latch.
Fig. 2 is a plan of the inner end of the key.
In the drawings, like characters of reference refer to the same parts.
In its preferred form the invention comprises a plurality of key-rods 2, wired together in pairs in spaced relationship, as at 3. These rods essentially reach or extend varying distances beyond a portable support 4, therefore, which, together with said rods, is hereinafter referred to as the key. The said support 4, may be made of any suitable non-conducting material so that the key rods 2 may be insulated from each other. If said-support is made of current-conducting material the key rods 2 must be suitably insulated therefrom. A panel 5 preferably made of any suitable insulating material, is provided with as 2 many parallel channels 6 as there are key-rods 2. These channels are spaced at distance apart equal to the distance separating said key-rods, and are to open at one end through the same side of the panel. Contact points 1 are located with respect to said channels 6, so that when the key-rods 2 are passed thereinto they will make contact with said contact points. The location of said contact points in said channels and the individual length or reach of the key-rods 2, is such that said key-rods simultaneously make contact therewith when they have been fully inserted into said channels.
Slideable in said channels 6 are normally-dormant non-current-conducting rods 8, normally out of contact with the key-rods 2. Each channel opens into a pocket 9 in said panel, and in each pocket are two terminals, I!) and H. Fastened to each terminal H, is a spring-key l2, which normally presses against its associated ter minal In. These spring-keys I2, and terminals l0 and H, are hereinafter referred to as cut-out switches.
Bearing in mind that at least two key-rods must simultaneously contact two contact points 1 to close the circuit, if attempt should be made to use a key in which any key-rod reaches up into a channel 6 far enough to contact the associated rod 8 thereof, it will move this rod to move the key l2 out of contact with its terminal [0, thus opening the circuit before the contact points I can be simultaneously contacted by all of its key-rods. Thus it will be seen that keys can be made usable with certainty only in a given panel, and hence a very wide range of keys and panels can be made. As before mentioned, the drawing shows the system adapted to be used to control the latch or bolt of a door. When the current is closed solenoid I3 is magnetized and withdraws the bolt or latch M from the outer dotted position into the inner dotted position, thus unlocking the door l5. When the key is removed from the panel, the circuit is opened, and the solenoid demagnetlzed, thus permitting the spring "5 to return the bolt or latch I4 in position to lock the door when it is shut.
The current enters through the feed-wire a to the terminal I I, through the key l2 to the terminal l0, through the wire b, through similar terminals and keys into the 'wire 0, and on through like wires and terminals and keys clearly shown to the contact point 1 at the right-hand side of the panel and continues on through the key-rods 2 and wires 3 to the contact points I wired together in the middle of said channel and finally out from 3 the contact point i at the left-hand side of the panel, through the wire 11, and by way of the solenoid [3 into the return wire e, thus completing the circuit.
Even if only two contact points 1 are used, the distance of same within the channels 6 may be the same, and two key-rods of equal reach used therewith may contact said :points simultaneously. A very wide range of permutations can be obtained with the elements just mentioned, in combination with rods 8, but obviously a very much wider range of permutations can be obtained where a greater number of pairs of key-rods 2 and contact points i are used.
The principle of the invention may-be embodied,
points in said circuit; a key having at least two current-conducting extensions adapted to .con- .tact said contact points simultaneously to close said circuit; two normally-closed cut-out switches in said circuit, and normally dormant means in termediate said contact points and'said switches adapted to .be actuated to open one .or both of said cut-out switches when another key, having one or more extension of greater reach thanrthe extensionsof said first-mentioned key --is used in an attempt to close said circuit.
2. A permutation system of series circuit control comprising a circuit; at least two contact points in staggeredrelations in said circuit; akey having at least twocurrent-conducting extensions of diiierent reaches adaptedto contact said contact points simultaneously to close said circuit;
til
4 two normally-closed cut-out switches in said circuit, and normally dormant means intermediate said contact points and said switches adapted to be actuated to open one or both of said cut-out switches when another key, having one or more extensions of greater reach than the extensions of said first-mentioned key is used in an attempt toclose said circuit.
3. In a permutation system circuit control a panel, made of suitable insulating material, provided with a plurality of parallel channels each opening at one end through the same side of the panel; a plurality of normally-closed cut-out switches housed in said panel and each accessible from a channel; a contact point in each channel "in "staggered position in relation to its fellows accessible from the open end thereof; a common "series circuit for said switches and contact points;
- nally movable in each of said channels and nor- REFERENCES CITED The following vreferences are of record in the file of this patent:
UNITED STATES PATENTS Name vDate Leschke et a1 Apr. 25, 1933 Number 1 1,905,965
US55564A 1948-10-20 1948-10-20 Permutation system of series circuit control Expired - Lifetime US2490906A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689279A (en) * 1949-09-21 1954-09-14 Maurice J Noregaard Electric switch
US3370137A (en) * 1967-01-03 1968-02-20 Thomas J.P. O'conner Room check key
FR2769034A1 (en) * 1997-09-29 1999-04-02 Effrastop ELECTRICAL LOCK WITH ENCODED EXTERNAL POWER SUPPLY

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1905965A (en) * 1932-03-15 1933-04-25 Hans M Leschke Electric safe lock

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1905965A (en) * 1932-03-15 1933-04-25 Hans M Leschke Electric safe lock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689279A (en) * 1949-09-21 1954-09-14 Maurice J Noregaard Electric switch
US3370137A (en) * 1967-01-03 1968-02-20 Thomas J.P. O'conner Room check key
FR2769034A1 (en) * 1997-09-29 1999-04-02 Effrastop ELECTRICAL LOCK WITH ENCODED EXTERNAL POWER SUPPLY
WO1999016990A1 (en) * 1997-09-29 1999-04-08 Financiere Gc Electric lock with coded external electric control and power supply

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