US3086351A - Combined switch and alarm actuating apparatus - Google Patents

Combined switch and alarm actuating apparatus Download PDF

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Publication number
US3086351A
US3086351A US14262A US1426260A US3086351A US 3086351 A US3086351 A US 3086351A US 14262 A US14262 A US 14262A US 1426260 A US1426260 A US 1426260A US 3086351 A US3086351 A US 3086351A
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United States
Prior art keywords
alarm
lever
switch
gear
cam
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Expired - Lifetime
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US14262A
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English (en)
Inventor
Robert L Boyles
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General Electric Co
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General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US14262A priority Critical patent/US3086351A/en
Priority to GB8465/61A priority patent/GB982781A/en
Priority to CH283161A priority patent/CH373321A/de
Priority to CH283161D priority patent/CH283161A4/xx
Application granted granted Critical
Publication of US3086351A publication Critical patent/US3086351A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
    • G04C23/02—Constructional details
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/18—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by mechanically unlocking an electromechanical vibrator, e.g. actuated by the leakage flux of the electric driving means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm

Definitions

  • This invention relates to alarm clocks of the type having switching means in combination therewith for controlling an auxiliary electric circuit and in particular relates to apparatus for placing the alarm and the auxiliary circuit switch under the control of a timer for a predetermined interval of time so that these devices will be automatically operated at the expiration of this timed interval.
  • a switch is utilized to control an auxiliary circuit that includes a radio, and since the timer can be manually adjusted to open the switch and thus tie-energize the radio after a predetermined interval of time, during which the user ordinarily desires to fall asleep, this type of switch mechanism is commonly referred to as a sleep switch.
  • Prior art devices utilize separate manually operable actuating mechanisms to provide the repeat alarm and sleep switch functions discussed above.
  • My invention maintains the number of manual operating devices as a minimum while at the same time providing a maximum number of controlled functions which the clock may perform.
  • the control means embodied in my invention are extremely simple and the manually operable controls are primarily of the pushbutton type so the mode of operation is not confusing to the user. With the control arrangement of my invention a single pushbutton controls selectively either a repeat alarm or a sleep switch. Also, the number of working parts in my control means has been reduced to a minimum and the arrangement of these parts has been improved to further reduce the chance of mechanical failure of the apparatus.
  • Another object of my invention is to provide a mechanically simple and relatively maintenance-free combination repeat alarm and sleep switch control that can be operated by a simple pushbutton mechanism.
  • a still further object of my invention is to provide a combination repeat alarm and sleep switch control apparatus that can be incorporated in various types of alarm clocks currently in common use without requiring extensive modification of the operating components of such clocks.
  • An additional object of my invention is to provide a combination repeat alarm and sleep switch control embodying means for varying either the duration of a snooze cycle in which the alarm is silenced, or the duration of a cycle in which the sleep switch is closed.
  • I provide a first lever pivotally mounted within an alarm clock and operable to silence the vibrator of the clock by raising it away from its alarm sounding position. Also, a second lever is pivotally mounted to open and close a switch of an auxiliary circuit when the lever is pivoted between first and second positions, respectively. These two levers are in turn controlled by a third pivotally mounted lever which has a portion thereof continuously engaging a rotatable cam that serves to move this third lever to a first and a second position sequentially.
  • a manually operable pushbutton type actuating member is provided to selectively connect the cam to a timer for a predetermined time interval and simultaneously to cause the first and second lever to be pivoted respectively to an alarm silencing and switch closing position.
  • the rotatable cam then maintains the alarm silencing and switch closing levers in this position until the timer moves to a position indicative of the expiration of the predetermined time interval at which time the cam moves the third lever to its second position and thus closes the switch and frees the alarm to sound.
  • FIG. 1 is a front elevational view of an alarm clock pushbutton control mechanism which may be utilized to operate the component parts of my invention
  • FIG. 2 is a partial front perspective view of the alarm controlling components of my invention as shown in an alarm sounding position;
  • FIG. 3 is a partial front perspective view of the alarm controlling component parts of my invention shown in an alarm silencing position;
  • FIG. 4 is a detailed front elevation, partly in cross section, of the alarm controlling component parts of my invention shown in FIG. 2;
  • FIG. 5 is a detailed front elevation of the alarm controlling component parts of my invention shown in the position indicated in FIG. 3;
  • FIG. 6 is a perspective view of an alarm clock, ex-
  • FIGS. 1 and 6 it will be seen that I have shown my combined repeat alarm and sleep switch control apparatus in combination with an electric alarm clock with a pushbutton type control mechanism.
  • the pushbutton control mechanism comprises the vertically reciprocable members or levers l, 2, 3, and 4 which have been labeled respectively Sleep or Repeat, On, Auto, and Off, because of the particular functions they perform in controlling the clock mechanism as will be discussed in further detail below.
  • a horizontally reciprocable latching bar 5 is common to the vertically reciprocable members 2, 3 and 4 ad is operable to coordinate the relative movements of these members 2, 3 and 4, as will be explained generally below.
  • the illustrated alarm clock generally comprises a self-starting synchronous electric motor having an energizing field 6 with terminals 7 thereon to alford means for connecting field 6 to a source of alternating current.
  • the energizing field 6 is wound on a field stator 8 that drives a self-starting synchronous rotor (not shown) that is coupled through a gear reduction chamber 9 to a rotatable geared shaft 10.
  • the shaft 10 is connected in a conventional manner to the gear train of the clock, and the operation of this gear train will not be explained in detail, since it does not form an essential part of the subject invention.
  • the basic components of the clock are a back plate 11, a front plate 12 which supports the four pushbuttons 1 through 4, a main operating lever 13, a latch lever 14, and time indicating hands, namely, an hour hand 15, a minute hand 16, and a second hand 17.
  • the parts of the clock which relate particularly to my invention are the resiliently mounted alarm vibrator member 18, the auxiliary circuit controlling switch comprising a fixed contact 19 and a resilient contact arm 20, the alarm controlling lever 21 which is pivotally mounted intermediate its ends in any suitable manner on the back plate 11, a pivotally mounted cam follower lever 22 that serves to determine the position of alarm controlling lever 21 and operating lever 13, a rotatably mounted cam 23 (see P16. 2. or FIG. 3) having a sector gear 24 that may be placed in engagement with a drive gear 25, as will be explained below.
  • the drive gear 25 is connected through a friction clutch 25a to a gear 26, and gear 26 is maintained in continuous engagement with one of the continuously rotated gears of the clock gear train.
  • the prime driving means for the clock train is a self-starting synchronous electric motor
  • the clock train will be placed in motion to drive the time indicating hands 15, 16 and 17 as soon as the field energizing terminals 7 are connected to a source of alternating current power.
  • the indicating hands through 17 are intended to cooperate with the clock face plate (not shown) that may be of any familiar design.
  • the two basic functions performed by the clock are to sound the alarm at predetermined times by allowing vibrator 18 to vibrate against the metallic member 185:, and to move the resilient switch contact arm toward or away from the fixed contact 19 at predetermined times.
  • the particular manner in which the clock and my control apparatus are allowed to perform these two basic functions is controlled by the vertically reciprocable levers 1 through 4. In general, the On lever 2 and the Off lever 4 afford a manual type of control of the auxiliary circuit control switch ISL-2t).
  • lever 2 when lever 2 is depressed, it moves rod 27 downward and thus causes operating lever 13 to pivot and allow insulating member 28 to move downward away from resilient switch arm 20 so that the resilience of arm 20 serves to close the switch contacts.
  • the Off lever 4 When the Off lever 4 is depressed, it moves the rod 29 downward against the sloped surface of latch lever 14 and thus rotates the lever 14 about its pivot. Since the operating lever 13 is keyed to the same shaft as lever 14, the operating lever 13 is raised as lever 14 pivots and thus raises the member 28 against the biasing force of resilient contact arm 20 and opens the switch contacts 19-20.
  • operating lever 13 has a tab portion 30 which engages the vibrator arm 18 and retains it out of contact with the member 18a when the operating lever 13 is moved upward to its alarm silencing position.
  • the Auto lever 3 In order to provide automatic control of the alarm vibrator 18, the Auto lever 3 is depressed, and thus, through the action of the horizontally reciprocable latching bar 5, releases any of the other levers that may have been previously depressed and latched in a depressed position.
  • the pointer 31 is then manually rotated by any suitable means to indicate a given predetermined time on the face of the clock (not shown). These operations place the clock train in complete control of the alarm vibrator arm 18 and the arm 18 will be freed at the predetermined time to vibrate against the member 18a.
  • the user may depress either lever 2 or lever 4, thus effecting a rotation of operating lever 13 to its alarm silencing position, as described above, where tab 30 will raise vibrator arm 18 away from member 26.
  • lever 1 acts through the pivotally mounted lever 22 and the 20 operating lever 13, as well as member 28, to close the switch 19-20 when lever 1 is depressed, as will be more fully described below.
  • the lever 1 by depressing the lever 1 it is possible to close the switch 19-20 for a predetermined interval of time that is controlled by the clock train acting through the cam 23 and rotatable sector gear 24.
  • the lever 22 is pivotally mounted intermediate its ends and provided with an arm that is operable to move both the alarm controlling lever 21 and the operating lever 13.
  • the lever 22 is provided with a slot in which a tab on the end of lever 21 is loosely positioned, while a bent tab on the end of lever 22 is disposed to engage one end of the operating lever 13 when the tab end of the lever 22 is rotated downward.
  • this particular configuration is merely exemplary, but I have found it very advantageous in that it allows my control mechanism to be readily adapted for use with operating arm 13.
  • a sleep switch type function that is, if he desires to leave the switch 1920 closed for a predetermined time interval while he goes to sleep, he merely depresses the Sleep" or Repeat” button 1 one or more times to set the rotate cam 23 for any one of three desired predetermined time intervals, as will be more fully described.
  • cam 23 is integral with sector gear 24 and gear 32.
  • the gear 32 has a plurality of spaced teeth. These teeth of gear 32 are positioned so that they may be engaged by the projection 33' formed on lever 33.
  • lever 33 is pivoted at 33" to lever 1, and one end of spring 35 is looped over tabs 1' and 33 formed on levers 1 and 33, respectively, for yielding holding the levers for movement as a unit but allowing lever 33 to rotate with respect to lever 1 as projection 33 moves on the teeth of gear 32. Therefore, each time lever 1 is depressed, projection 33' moves the sector gear 24 and cam 23 in a clockwise direction, as shown in FIGS.
  • the friction clutch 25 between drive gear 25 and gear 26 allows the gear 25 to be rotated by the clockwise movement of the gear 24 during the manual setting of the predetermined time interval.
  • the friction clutch 25a serves to retain the gear 25 and thus the gear 32 in position when the lever 1 is returned to its uppermost position by a biasing spring.
  • any one of four predetermined time intervals may be set on the combination gear sector 24 and cam 23 by simply depressing the lever 1 successively either one, two, three, or four times.
  • the respective intervals of time may be determined by initially forming the spacing between the adjacent teeth of gear 32 to a desired distance.
  • the time inter val required for gear 25 to drive sector gear 24 back to its original position is dependent upon the rate of rotation of gear 25 and this in turn depends on what particular gear of the clock train the gear 26 is placed in engagement with; however, these are design parameters that may be readily resolved by one skilled in the art so no further discussion will be given of them at this point.
  • the clockwise movement of the lever 22 brings this lever into engagement with one end of the operating lever 13 if this lever is in its uppermost position or switch opening position at the time, and thus causes the lever 13 to be rotated in a counterclockwise direction to its second or operating position (as shown in FIG. 6) thereby to lower the member 28 away from its uppermost position and thus allow the resilient contact arm 20 to close the switch 19-20.
  • the timer of my combined repeat alarm and sleep switch controlling apparatus which comprises the gear 25 and its associated slip clutch, and the integral gears 24 and 32 as well as the integral cam 23, will commence its timing function immediately after the manually operated lever 1 is released and returned to its uppermost position by its biasing spring 35. It will, therefore, be apparent that the gear 26 will drive the gear 25 through the friction clutch 25a in a clockwise direction as shown in FIGS. 4 and 5 and, thus, effect a counterclockwise rotation of the gear 24 and its associated cam 23. This rotation of the cam 23 causes the depressed portion of the cam surface to be moved under the pin 34 on lever 22 after the expiration of the predetermined time interval.
  • the alarm vibrator 18 may also be controlled by the positioning of alarm pointer 31 and its associated timing disks; therefore, the repeat alarm feature of my invention will only be brought into elfective use after the alarm vibrator 18 has been freed to vibrate against the alarm member 13a by the operation of the pointer 31 and its associated control disks, which cause the alarm restraining tab 30 on operating lever 13 to be moved away from the vibrator arm 18 so that the vibrator arm 18 is placed under the exclusive control of my repeat alarm control comprising the lever 21 and the lever 22.
  • the sleep switch feature of my invention will only be brought into practical use when either Auto pushbutton 3 or the Oll" pushbutton is depressed to remove the controlling action of pushbutton lever 2 on the position of the resilient switch arm 20.
  • the switch 19-20 is closed in the manner described above and will be automatically opened after the expiration of the predetermined time interval by the upward or clockwise movement of operating lever 13 when it is released by the counterclockwise rotation of the lever 22 as described above.
  • a clock having a timer comprising a rotatably mounted cam and integral sector gear, a drive gear engageable with said sector gear and a friction clutch for drivingly connecting the drive gear to the clock train, in combination with an alarm, an electric circuit controlling switch, a first pivotally mounted lever for controlling the operation of said alarm, a second pivotally mounted lever for controlling the operation of said switch, a third pivotally mounted lever for controlling the respective positions of the first and second levers, said third lever having a projection disposed to slidably engage the rotatable cam, said cam being formed to move the projection and its associated lever sequentially from a first to a second position when said cam is rotated, means for manually rotating the cam to a predetermined position indicative of a preset time interval whereby the first, second and third levers are moved respectively to alarm silencing and switch closing positions, said cam retaining said levers in their respective alarm silencing and switch closing positions until the timer has moved the cam to a position indicative of the expiration of the preset time interval such that the projection on
  • a clock having a timer operable to measure predetermined time intervals, an alarm, a switch, a first lever for controlling the operation of said alarm, a second lever for operating said switch, a rotatable cam, said timer embodying means to rotate said cam for selected predetermined time intervals, a third lever pivotally mounted to engage said cam, said cam being effective when rotated to pivot said third lever sequentially to first and second positions, said third lever being disposed to move said first and second levers to alarm silencing and switch closing positions respectively when the cam moves said third lever through its first position, said first and second levers being disposed to move to alarm sounding and switch opening positions respectively, and said third lever having means to free said first and second levers to move respectively to said alarm sounding and switch opening positions when said third lever is moved to its second position by said cam, whereby the timer is operable to control the operation of both the alarm and the switch.
  • a rotatable cam selectively connectable through a friction clutch to said gear train, a manually operable means to place said cam in driven relation to said gear train for a predetermined time interval, a first lever pivotally mounted intermediate its ends and having a portion thereof in sliding engagement with said cam whereby rotation of the cam sequentially pivots said pivotal lever to first and second positions, a second lever pivotally mounted intermediate its ends and having a first portion thereof disposed to engage the first lever and be moved thereby and having a second portion disposed to engage the alarm vibrator, said second lever being rotatable to silence and free said vibrator respectively when the first lever is moved to its first and second positions respectively, a third lever pivotally mounted intermediate its ends and having a first portion disposed to engage the first lever and be moved thereby and having a second portion connected to said switch to close and open the switch when the first lever is moved to its first and second
  • a clock having a timer operable to control both an alarm to be operated at a predetermined time and a switch to be closed for a predetermined time interval, an alarm shutoff lever, a control element controlling the position of said shutoff lever and the switch, said control element having a normal position in which the shutofi lever does not restrain the alarm and the switch is permitted to be in an open position and an operating position in which the control element closes the switch and prevents the alarm from sounding, manual means for moving said control element from said normal position to said operating position to close the switch and prevent the alarm from sounding, and automatic means movable as a function of time by said timer for returning said control element to said normal position at the end of a predetermined time interval to permit the alarm to sound and to open the switch.
  • a clock having a timer operable to measure predetermined time intervals, an alarm vibrator arm, a vibrator shut off lever having an alarm on position out of engagement with said vibrator arm and an alarm off position in engagement with said arm, a switch, a switch operating lever having a switch open and a switch closed position, a pivoted control lever having a normal position in which the vibrator shut-off lever is held in its alarm on position and the switch operating lever is held in the switch open position and an operating position in which the vibrator shut oil lever is held in its alarm off position and the switch operating lever is held in its switch closed position, manual means for simultaneously moving said control element from said normal position to said operating position to close the switch and to prevent the alarm from sounding, and automatic means movable as a function of time by said timer for returning said pivoted control element to said normal position at the end of a predetermined time interval to simultaneously permit the alarm to sound and to open the switch.
  • a clock having a timer operable to measure predetermined time intervals, an alarm vibrator arm, a vibrator shut off lever having an alarm on position out of engagement with said vibrator arm and an alarm off position in engagement with said arm, a switch, a switch operating lever having a switch open and a switch closed position, a pivoted control lever having a slot formed in one end thereof for receiving an end of said vibrator shut off lever and a projection formed thereon for engaging the switch operating lever, said pivoted control lever having a normal position in which the vibrator shut off lever is held in its alarm on position and the switch operating lever is held in the switch open position, and an operating position in which the vibrator shut off lever is held in its alarm off position and the switch operating lever is held in the switch closed position, manual means for moving said control lever from said normal position to said operating position to close the switch and prevent the alarm from sounding, and automatic means movable as a function of time by said timer for returning said pivoted control lever to said normal position at the end of a predetermined time interval to permit the alarm to
  • an alarm clock comprising a supporting structure, an alarm mechanism having a resilient vibrator arm, an electric alarm circuit including a switch, a timing mechanism, a release mechanism operated by said timing mechanism for sounding said alarm at a pre-set time, the improvement comprising manually actuated means for shutting off the alarm and closing the switch for a predetermined short-time interval comprising, a control means interconnected with said release mechanism, a pivotally mounted sector gear for moving said control means, said sector gear being normally spaced from said timing means, a vertically reciprocatory push button lever slidably mounted on said supporting structure, and a cam projection formed on said push button lever for pivoting said sector gear to simultaneously connect the gear to said timing mechanism and move said control means to temporarily shut ofi? the alarm and close the switch, said sector gear cooperating with said control means to hold said vibrator arm in the alarm off position and said switch in a closed position for a predetermined short interval.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromechanical Clocks (AREA)
US14262A 1960-03-11 1960-03-11 Combined switch and alarm actuating apparatus Expired - Lifetime US3086351A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US14262A US3086351A (en) 1960-03-11 1960-03-11 Combined switch and alarm actuating apparatus
GB8465/61A GB982781A (en) 1960-03-11 1961-03-08 Improvements in or relating to combined electric alarm clocks and time-switches
CH283161A CH373321A (de) 1960-03-11 1961-03-09 Weckeruhr
CH283161D CH283161A4 (de) 1960-03-11 1961-03-09

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US14262A US3086351A (en) 1960-03-11 1960-03-11 Combined switch and alarm actuating apparatus

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US3086351A true US3086351A (en) 1963-04-23

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152229A (en) * 1962-10-30 1964-10-06 Gen Electric Repeat mechanism for a clock controlled switch
US3204052A (en) * 1963-07-23 1965-08-31 Mallory & Co Inc P R Motor-driven cam-actuated electrical time switch mechanism
US3207865A (en) * 1962-05-10 1965-09-21 Gen Time Corp Clock-controlled switch with drowse mechanism operable only in the auto position
US3227827A (en) * 1963-09-23 1966-01-04 Gen Time Corp Timer drowse mechanism
US3308617A (en) * 1965-06-15 1967-03-14 Gen Electric Repeat alarm with condition indicator
US3545196A (en) * 1968-08-05 1970-12-08 Warwick Electronics Inc Computer clock timer
US3725617A (en) * 1972-04-07 1973-04-03 Gen Electric Alarm clock timer with switch actuating lever operable by cam or manual adjustment mechanism
FR2179209A1 (de) * 1972-04-07 1973-11-16 Gen Electric

Citations (9)

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Publication number Priority date Publication date Assignee Title
US2244924A (en) * 1939-12-18 1941-06-10 Roy M Thorson Alarm clock
US2421986A (en) * 1946-03-07 1947-06-10 Telechron Inc Alarm clock and switch
US2444748A (en) * 1945-08-28 1948-07-06 Anthony J Parissi Clock with visible and audible alarm means
US2721441A (en) * 1952-11-12 1955-10-25 Gen Electric Switch and alarm clock
US2768332A (en) * 1953-11-23 1956-10-23 Gen Electric Timing device
US2920438A (en) * 1960-01-12 Alarm control mechanism
US2994183A (en) * 1958-02-12 1961-08-01 Gen Electric Alarm control mechanism
US2997433A (en) * 1959-03-24 1961-08-22 Standard Oil Co Preparation of tertiary butylated aromatic compounds
US2996874A (en) * 1961-08-22 Alarm clock delay control

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920438A (en) * 1960-01-12 Alarm control mechanism
US2996874A (en) * 1961-08-22 Alarm clock delay control
US2244924A (en) * 1939-12-18 1941-06-10 Roy M Thorson Alarm clock
US2444748A (en) * 1945-08-28 1948-07-06 Anthony J Parissi Clock with visible and audible alarm means
US2421986A (en) * 1946-03-07 1947-06-10 Telechron Inc Alarm clock and switch
US2721441A (en) * 1952-11-12 1955-10-25 Gen Electric Switch and alarm clock
US2768332A (en) * 1953-11-23 1956-10-23 Gen Electric Timing device
US2994183A (en) * 1958-02-12 1961-08-01 Gen Electric Alarm control mechanism
US2997433A (en) * 1959-03-24 1961-08-22 Standard Oil Co Preparation of tertiary butylated aromatic compounds

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207865A (en) * 1962-05-10 1965-09-21 Gen Time Corp Clock-controlled switch with drowse mechanism operable only in the auto position
US3152229A (en) * 1962-10-30 1964-10-06 Gen Electric Repeat mechanism for a clock controlled switch
US3204052A (en) * 1963-07-23 1965-08-31 Mallory & Co Inc P R Motor-driven cam-actuated electrical time switch mechanism
US3227827A (en) * 1963-09-23 1966-01-04 Gen Time Corp Timer drowse mechanism
US3308617A (en) * 1965-06-15 1967-03-14 Gen Electric Repeat alarm with condition indicator
US3545196A (en) * 1968-08-05 1970-12-08 Warwick Electronics Inc Computer clock timer
US3725617A (en) * 1972-04-07 1973-04-03 Gen Electric Alarm clock timer with switch actuating lever operable by cam or manual adjustment mechanism
FR2179209A1 (de) * 1972-04-07 1973-11-16 Gen Electric

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Publication number Publication date
CH373321A (de) 1963-07-31
CH283161A4 (de) 1963-07-31
GB982781A (en) 1965-02-10

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