US3192331A - Permutation switch with a pair of bus bars each having spaced apart integral spring fingers - Google Patents

Permutation switch with a pair of bus bars each having spaced apart integral spring fingers Download PDF

Info

Publication number
US3192331A
US3192331A US141091A US14109161A US3192331A US 3192331 A US3192331 A US 3192331A US 141091 A US141091 A US 141091A US 14109161 A US14109161 A US 14109161A US 3192331 A US3192331 A US 3192331A
Authority
US
United States
Prior art keywords
fingers
bars
bus bars
pair
tumblers
Prior art date
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
Application number
US141091A
Other languages
English (en)
Inventor
Raymond W Davidson
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.)
Electronic Security Corp
Original Assignee
Electronic Security Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to BE623372D priority Critical patent/BE623372A/xx
Application filed by Electronic Security Corp filed Critical Electronic Security Corp
Priority to US141091A priority patent/US3192331A/en
Priority to FR884539A priority patent/FR1369329A/fr
Priority to DEE23052A priority patent/DE1228699B/de
Priority to GB24813/62A priority patent/GB980519A/en
Priority to CH903562A priority patent/CH403941A/de
Application granted granted Critical
Publication of US3192331A publication Critical patent/US3192331A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • 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
    • G07C9/00666—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 dials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding

Definitions

  • the general object of the present invention is to improve upon the type of switch shown in that patent wherein a plurality of disc-like tumblers arranged for free selective rotation about a tubular fixed shaft mounted in one end of a case, are provided with segmental peripheries consisting in respective conductor and insulator segments, and are arranged for engagement of said peripheries by a plurality of contact brushes which are mounted on the inside of and insulated from the lateral wall of the case and project radially inwardly into contact with the tubular peripheries.
  • the principal objects of the present invention are to provide an improved and simplified construction of tumbler actuating and inter-engaging means; an improved and simplified construction and arrangement of contact brushes, adjustable and settable means interconnecting the tumbler supporting shaft and actuating means therefor, and similar means interconnecting the tumbler shaft with tumbler pick-up means whereby the various combinations that can be assigned to the switch are of greater magnitude than any other that I am aware of.
  • FIGURE 1 is a front elevational view of a permutation switch made in accordance with my invention.
  • FIGURE 2 is a side elevational view of FIGURE 1 with a fragment broken away for convenience of illustration and showing in broken lines mounting means for the switch.
  • FIGURE 3 is a view of the right hand side of FIGURE 2 on an enlarged scale and with the mounting flange removed.
  • FIGURE 4 is an axial sectional view of FIGURE 2 on an enlarged scale with fragments of the tumblers therein broken away.
  • FIGURE 5 is a perspective detail view of a pair of bus bars and brush contacts integrated therewith.
  • FIGURES 6 and 7 are front and side elevational views respectively of a typical tumbler.
  • FIGURE 8 is a side elevational view of a modified form of the invention and mounting means therefor with fragments broken away for convenience of illustration, and
  • FIGURE 9 is a sectional detail view on an enlarged scale taken approximately along the line 9-'9 of FIGURE 8;
  • reference numeral 1 indicates generally a casing having a cylindrical lateral wall 2, an integrated closure wall 3 and mounting flange 4 as its forward end, and a removable disc 5 closing the rearward end.
  • the disc is provided with diametrically opposed apertures 6 and an upwardly opening recess 7.
  • opposed internally threaded bosses 3 are integrated with the interior wall of the casing.
  • the switch may be mounted to a wall 10 or similar support by extending the casing 1 through an opening 11 in the wall and abutting the mounting flange 4 against the outside of the wall.
  • the switch is secured to the wall by means of a generally U-shaped bracket 13 through whose cross member 14 studs 15 extend and threadedly engage the internally threaded bosses 8.
  • Lock nuts 16 and 17 are applied to the studs on the inside and outside of the bracket cross member 14, and the feet 24 of the bracket are secured to the inside of the wall '10 by screws 21.
  • a round tumbler-supporting shaft 25 (see FIG. 4) of square section at its for-ward and rearward ends as at 26 and 27 respectively.
  • a dialing knob 28, removably secured as at 29 to the front end of the shaft, has its flange 3% (FIG. 1) inscribed with numbered indicator marks as shown, cooperable with .a fixed indicator mark or reference point 31 on the rim of the mounting flange 4.
  • Each tumbler is generally in the form of a flat circular disc having a central opening 42 therethrough for rotatable mounting on shaft 25, and a forwardly opening annular recess 43 therein with a radially disposed driving web across the recess as at 45.
  • the opposite or rearward side of each tumbler dis-c is provided with a driving pin 50, and the rim of each disc is provided with adjoining V-notches 52 to define between them respective transverse ridges of triangular section as shown in FIGURES 3 and 6.
  • Each tumbler is made of metal or other conductive material such, for example, as that used in die casting and its rim is provided with a groove 55 undercut on both of its sides as shown to receive by a forced fit a segment 56 of dielectric material provided on its exterior with transverse V-notches 57 matching in shape and continuity the V-notches 52 in the rim of the tumbler.
  • the inner or bottom surface of each segment '56 (FIG. 3) is provided with a nodule 56A for similar engagement with a receiving recess 5613 in the bottom wall of the groove to thus securely mount the segment within the respective groove 55.
  • a semi-cylindrical mounting plate 60 of dielectric material, such as synthetic resin plastic, having a chordal inner face 61 to provide strengthening thickness thereacross, is injection molded to fit snugly within the arcuate space defined between the circumferentially spaced bosses 8 with the side edges of the mounting plate bearing against the bosses, as shown.T he mounting plate is secured in place by securement of the closure disc 5 to the bosses 8 by means of the studs 15.
  • Two bus-bars 65 and 66 (FIG. 5) disposed one above the other with insulation 67 therebetween (FIG. 4) are of flat formation throughout their length and integrated with outwardly extending spring contact fingers 6S and 69 respectively curved downwardly on unlike radii of curvature, as best shown in FIGURE 5, before assembly with the tumblers within the casing 1, terminating in tip ends of angular formation on a common horizontal plane and matching the angularity of the V-notches 52 and 57 for positive engagement therewith after assembly with the tumblers to elfect initial resistance in said spring fingers against unintentional rotation of the tumblers in either direction.
  • the resistance of the spring fingers re-aots through the mounting plate and the sides thereof against the bosses 8.
  • the conductors 72 and 73 extend outwardly through the recess 7 in the disc and are in closed circuit with a source (not shown) of electrical current and for example an electrical lock-actuating mechanism (not shown) such as a solenoid and core, or the like, wherein the core is adapted to function as a locking bolt when the solenoid is energized.
  • a source not shown
  • an electrical lock-actuating mechanism such as a solenoid and core, or the like
  • the conductors could also be in circuit with an alarm through conductor tape, such as is used on jewelry store windows, vaults, safes and the like, in burglar alarm systems wherein when the circuit is broken the alarm is energized.
  • bus-bars '65 and 66 are installed as aforesaid and in such manner that their angular tips are at all times spring-urged into firm, non-slipping but removable engagement with the V-notches of their respective tumbler discs 35-38. From the foregoing it will be readily apparent that an electrical circuit through the bus-bars will remain closed as long as any two of the contact fingers 68-69 are in contact with their respective tumbler and that the circuit can only be broken when all the contact fingers are in contact with the dielectric segments 56 of their respective tumblers.
  • Such making and breaking the electrical circuit can only be accomplished by rotating the tumblers relative to each other about their supporting shaft by means of the dialing knob 2-8 and then only by an authorized person who has knowledge of the number of turns to the right or left thereof to bring the various numbered indicator marks on the dial flange into registry with the fixed indicator mark 31 on the rim of the flange 4.
  • knob 28 and actuator arm In the initial rotation of the knob 28 and actuator arm they will be rotated several revolutions, so as to cause the driving pins 59 of successive tumblers, beginning with tumbler 38, to inter-engage with driving webs of adjacent tumblers so that the successive tumblers will in turn be. picked up and rotated along with tumbler 38.
  • the first stop at the indicator markGl will result in the dielectric segment 56 of the first tumbler 35 being brought into engagement with its respective contact fingers 68 and 69 of the bus-bars 65 and 66 thus initially breaking the circuit only through those two contact fingers.
  • the dialing knob 28 is rotated in the opposite direction, one turn less than previously, causing actuator arm 46 to first dis engage from one side of driving pin 59' of the fourth or foremost tumbler 38 and rotate around into engagement with the other side of said pin causing driving web of tumbler 38 to pick up pin of the third tumbler 37 to rotate the same in said opposite direction.
  • Web -45 of tumbler 37 will pick up pin 50 of the second tumbler 36 to rotate the same until its dielectric segment 56 is engaged by the tips of its respective contact fingers and so held against further rotation.
  • the numerical combinations can be varied to an even'greater extent because of the configuration of the knob-end ZdA-of tumbler-supporting shaft 25A which may be that as shown, or of hexagonal, octagonal or any other multi-faced or non-circular section and fitted within and secured, as at 75, to one end of a matching coupling 76 whose opposite end is of square section for securement as at '77 to the dialing knob 28A.
  • the switch in its entirety is shown secured to a support which, for example, could be the front wall of a drawer of a filing cabinet or similar storage receptacle wherein said support comprises a heavy steel main wall 80 and inner andouter walls 81 and 82.
  • the studs 15A extend through the inner wall 81 and into threaded securement with drilled and tapped holes 84 in the main wall 80.
  • the mounting flange 4A of the closure wall 3A is secured to the outerwall 52 and main wall 80 by screws 85.
  • a permutation switch including ahollow cylindrical casing closed atboth of its ends having a plurality of cylindrical tumblers rotatably mounted therein which have conducting and non-conducting surface portions, electrical conductors extending to the interior of the housing, and a semi-cylindrical mounting plate supported within the casing and having a relatively thick chordal inner face, the improvement comprising.
  • both bus bars being bonded as a unit throughout their said major portion to said chordal inner face of said mounting plate;
  • each of said bus bars having laterally, outwardly extending, spaced apart integral spring contact fingers curved downwardly, the fingers of one of said bars straddling those of the other of said bars to provide a series of pairs, each finger of said pair being connected to a separate bar;
  • the fingers of one of said bars having a common radius of curvature unlike the common radius of curvature of the fingers of the other of said bars, said fingers all terminating in tip ends of angular formation lying in a common plane;
  • a multiple switch circuit may be provided by the use of only two integral conductive elements and whereby stresses applied to said elongated spring fingers by the rotation of said tumblers will be absorbed by the resiliency of the spring fingers within the length thereof with minimal transfer to the bus 15 bars and to their bonding components.
  • said spring contact fingers are all substantially tangential to the peripheral surfaces ott said tumblers.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
US141091A 1961-09-27 1961-09-27 Permutation switch with a pair of bus bars each having spaced apart integral spring fingers Expired - Lifetime US3192331A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE623372D BE623372A (sr) 1961-09-27
US141091A US3192331A (en) 1961-09-27 1961-09-27 Permutation switch with a pair of bus bars each having spaced apart integral spring fingers
FR884539A FR1369329A (fr) 1961-09-27 1962-01-11 Commutateur à permutation
DEE23052A DE1228699B (de) 1961-09-27 1962-06-18 Umschalter mit mehreren stirnseitig gekoppelten Schaltraedern
GB24813/62A GB980519A (en) 1961-09-27 1962-06-28 Combination electric switch
CH903562A CH403941A (de) 1961-09-27 1962-07-27 Schaltungsvorrichtung an einem elektrischen Kombinationsschaltschloss

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US141091A US3192331A (en) 1961-09-27 1961-09-27 Permutation switch with a pair of bus bars each having spaced apart integral spring fingers

Publications (1)

Publication Number Publication Date
US3192331A true US3192331A (en) 1965-06-29

Family

ID=22494118

Family Applications (1)

Application Number Title Priority Date Filing Date
US141091A Expired - Lifetime US3192331A (en) 1961-09-27 1961-09-27 Permutation switch with a pair of bus bars each having spaced apart integral spring fingers

Country Status (5)

Country Link
US (1) US3192331A (sr)
BE (1) BE623372A (sr)
CH (1) CH403941A (sr)
DE (1) DE1228699B (sr)
GB (1) GB980519A (sr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391259A (en) * 1967-04-24 1968-07-02 Kenneth E. Massengale Electrical switch
US3657496A (en) * 1970-10-09 1972-04-18 Electronic Controls Corp Permutation switches
US3801761A (en) * 1973-07-05 1974-04-02 F Green Combination electrical switch
US3878346A (en) * 1973-07-05 1975-04-15 Franklin L Green Combination electrical switch

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156121A (en) * 1914-04-04 1915-10-12 Harry C Dunning Combination-switch.
US1185690A (en) * 1915-07-30 1916-06-06 George W Lawrence Electric switch.
US1673607A (en) * 1926-03-31 1928-06-12 David M Tulloch Electric switch device
US2528746A (en) * 1947-05-19 1950-11-07 Giffin Edward Stanley Cam-operated latch mechanism
US2797271A (en) * 1954-03-29 1957-06-25 Augustine Davidson Lock Corp Permutation switch
US2934615A (en) * 1956-03-21 1960-04-26 Goral Lewis Combination lock switch
US2984717A (en) * 1959-06-22 1961-05-16 Max A Loc Inc Permutation switch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483810A (sr) * 1945-10-17

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156121A (en) * 1914-04-04 1915-10-12 Harry C Dunning Combination-switch.
US1185690A (en) * 1915-07-30 1916-06-06 George W Lawrence Electric switch.
US1673607A (en) * 1926-03-31 1928-06-12 David M Tulloch Electric switch device
US2528746A (en) * 1947-05-19 1950-11-07 Giffin Edward Stanley Cam-operated latch mechanism
US2797271A (en) * 1954-03-29 1957-06-25 Augustine Davidson Lock Corp Permutation switch
US2934615A (en) * 1956-03-21 1960-04-26 Goral Lewis Combination lock switch
US2984717A (en) * 1959-06-22 1961-05-16 Max A Loc Inc Permutation switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391259A (en) * 1967-04-24 1968-07-02 Kenneth E. Massengale Electrical switch
US3657496A (en) * 1970-10-09 1972-04-18 Electronic Controls Corp Permutation switches
US3801761A (en) * 1973-07-05 1974-04-02 F Green Combination electrical switch
US3878346A (en) * 1973-07-05 1975-04-15 Franklin L Green Combination electrical switch

Also Published As

Publication number Publication date
BE623372A (sr)
CH403941A (de) 1965-12-15
DE1228699B (de) 1966-11-17
GB980519A (en) 1965-01-13

Similar Documents

Publication Publication Date Title
US2466072A (en) Electric switch
US3192331A (en) Permutation switch with a pair of bus bars each having spaced apart integral spring fingers
US3657496A (en) Permutation switches
US2797271A (en) Permutation switch
US3165599A (en) Key operated combination switch for alarm system
US3801755A (en) Key cylinder and electrical switch
US2847522A (en) Electric switches
CH638945GA3 (sr)
US2609467A (en) Mercury switch
US3361997A (en) Multiple contact series/parallel electromagnetic switch
US2771520A (en) Rotary switch
US2037730A (en) Electric switch
US966286A (en) Electric switch.
US4394551A (en) Switch lock
US598033A (en) Electric signaling device
US3454730A (en) Timing mechanism
US2301720A (en) Combined doorknob alarm and push-button signal
US618380A (en) Half to william g
US1508064A (en) Time control switch
US460618A (en) Electric switch
US3745269A (en) Mechanical device with manually operable keys for supplying voltage to output channels in preset fashion
US3571711A (en) Spring-driven timer
US2070337A (en) Switch
US968217A (en) Permutation-lock switch.
US2603733A (en) Electrical switch