US3721087A - Digital clock - Google Patents

Digital clock Download PDF

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Publication number
US3721087A
US3721087A US00196479A US3721087DA US3721087A US 3721087 A US3721087 A US 3721087A US 00196479 A US00196479 A US 00196479A US 3721087D A US3721087D A US 3721087DA US 3721087 A US3721087 A US 3721087A
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Prior art keywords
tens
cam
units
minutes
hours
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US00196479A
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English (en)
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R Boyles
S Polonsky
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General Electric Co
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General Electric Co
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Assigned to CHASE MANHATTAN BANK, N.A., THE reassignment CHASE MANHATTAN BANK, N.A., THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREDERIKSPLEIN HOLDING 1970 B.V., TIMEX CLOCK COMPANY, A DE CORP., TIMEX COMPUTERS LTD., A DE CORP., TIMEX CORPORATION, A DE CORP., TIMEX ENTERPRISES, INC., A BERMUDA CORP., TIMEX GROUP LTD., A BERMUDA CORP., TIMEX MEDICAL PRODUCTS LTD., A BERMUDA CORP., TIMEX N.V.
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    • 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
    • G04B19/00—Indicating the time by visual means

Definitions

  • ABSTRACT References Cited tens of hours display indicator.
  • a unique indexing UNITED STATES PATENTS mechanism is positioned between the minutes cam and the tens of minutes cam for indexing the minutes 2,968,143 1/1961 Meyer ..58/l25 cam one increment each minute and for simultane- 3,260,343 6 McCormick ously indexing the tens cam one increment at the in- 2 3 V1967 Emem et stant of the tenth actuating increment of the minutes 3,397,585 8/1968 McGowan cam 3,465,605 9/1969 Hylan 2,587,277 2/1952 Bergman ..58/85.5 10 Chims, 12 Drawing Figures 2,596,370 5/1952 Bush ..53/l25 C X in illllllllll Z4 I 1 nmuum l I// l L /40 mmnnmnn O I. I l l l l. I I111 l 1 l 1-
  • This invention relates to a digital clock, and more particularly to a unique indexing and drive arrangement for the numeral display indicators of ⁇ a digital clock which indicate minutes, tens of minutes, hours and tens of hours.
  • a display indicator having a plurality of horizontal and vertical bars or lines arranged in the shape of a numeral 8 for indicating numerals from thru 9.
  • the numerals from 0 thru 9 may be readily formed from seven straight line indicator bars which are arranged in the shape of the FIG. 8.
  • the seven indicator bar segments include three generally parallel horizontally arranged bars and two pairs of generally vertically arranged bars positioned on opposite sides of the horizontal bars. With this arrangement, should it be desired to display a numeral 1, all bar segments except the two right vertical segments would be blocked out.
  • the numeral 3 may be formed by blocking out the two left vertical bars.
  • This invention is concerned with arranging four display indicators in close proximity with respect to each other for displaying minutes, tens of minutes, hours and tens of hours.
  • Our invention is particularly concerned with a unique drive arrangement for appropriately indexing the units, tens, hours and tens of hours display indicators so that the numerals which are displayed by these indicators are quickly indexed from one numeral to the next succeeding numeral.
  • a digital clock includes a plurality of display indicators for visually displaying a set of numerals from 0 thru 9 to indicate the time of day.
  • a rotatable units cam is positioned adjacent to a minutes display indicator for progressively actuating the units display indicator to display numerals from 0 thru 9 to indicate minutes.
  • a rotatable tens cam is spaced to the left of the units cam for progressively actuating the tens of minutes display indicator for displaying numerals to the left of the minutes in order to display tens of minutes.
  • a unique indexing mechanism is mounted between the minutes cam and the tens cam for indexing the units cam one incentral portion to the drive lever.
  • the pawl lever has a pawl formed on one of its side portions for engaging the units cam for moving the units cam one increment each minute, and the pawl lever also has a pawl formed on its other side portion for engaging and moving the tens cam an increment every ten minutes.
  • both the units cam for indexing the units display indicator and the tens cam for indexing the tens display indicator are actuated by the same pawl indexing mechanism which is conveniently positioned and pivoted between the units and tens cams.
  • the pawl lever may be counterweighted with more weight in the vicinity of the pawl which engages the units cam to normally hold the pawl above the tens cam.
  • the pawl lever exerts relatively weak forces on the digital clock mechanism and may be moved and actuated by a low power motor.
  • FIG. 1 is a front elevational view of a digital clock constructed in accordance with our invention
  • FIG. 2 is a fragmentary front elevational view of a portion of the mechanism for setting and indexing the minutes, tens of minutes, hours and tens of hours display indicators of the digital clock shown in FIG. 1;
  • FIG. 3 is a fragmentary front elevational view of a portion of the cam mechanism for actuating the minutes, tens of minutes, hours and tens of hours display indicators of the digital clock shown in FIG. 1;
  • FIG. 4 is a fragmentary exploded front perspective view of the drive cam mechanism for successively indexing the minutes, tens of minutes and hours display indicators of the digital clock shown in FIG. 1;
  • FIG. 5 is a fragmentary front elevational view showing portions of the vertically movable shutters of the units, tens and hours indicators along with the cam mechanisms for driving them of the digital clock shown in FIG. 1;
  • FIG. 6 is a fragmentary front elevational view of portions of the horizontally movable shutters and the drive cams for the shutters of the digital clock shown in FIG.
  • FIG. 7 is a fragmentary side elevational view of a portionof the drive mechanism the digital clock shown in FIG. 1;
  • FIG. 8 is a fragmentary exploded perspective view of the indexing mechanism for the units, tens and hours cams for the display indicators of the clock shown in FIG. 1;
  • FIG. 9 is a front elevational diagrammatic view of the units and tens cam indexing mechanism of the digital clock shown in FIG. 1, the parts being shown in the position wherein the minutes cam is being indexed one increment;
  • FIG. 10 is a front elevational diagrammatic view similar to FIG. 9 with the parts being shown in the position wherein both the minutes cam and the tens cam are being indexed one increment;
  • FIG. 11 is a front elevational diagrammatic view similar to FIG. 9 with the parts being shown in the position wherein the drive lever for the units and tens cam is being returned to a starting position after the drive lever has indexed the units cam one increment;
  • FIGS. 1, 2 and 3 there is shown a digital clock which includes our unique indexing and drive arrangement for appropriately actuating four numeral display indicators 2, 4, 6 and 8 which indicate minutes, tens of minutes, hours, and tens of hours, respectively.
  • each display indicator includes a plurality of horizontal and vertical bars or lines arranged in the shape of a numeral 8 for indicating numerals from 0 thru 9.
  • There are seven indicator bar segments including three generally parallel horizontally arranged bars 10, 12 and 14, and two pairs of generally vertically arranged bars 16, 18, and 22 positioned on opposite sides of the horizontal bars.
  • the right three display indicators 2, 4 and 6 are displaying numerals 5,3 and 2, respectively.
  • display indicator 2 the lower right and upper left vertical bars are blocked out.
  • display indicator 4 the two left vertical bars are blocked out, and in display indicator 6 the upper right and lower left vertical segments are blocked out.
  • the details of the right three display indicators 2, 4 and 6 do not form a part of this invention and are described and illustrated in greater detail in a co-pending application of Robert L. Boyles, Ser. No. 105,854, assigned to the same assignee as the present invention.
  • the display indicators 2, 4 and 6 include a common front plate 24 which may be formed of a sheet of plastic that may be readily slotted or blocked out to reveal three clear numeral 8s, one for each of the display indicators 2, 4 and 6.
  • each of the display indicators 2, 4 and 6 includes a vertically movable shutter 30, 32 and 34, respectively, for selectively blocking out one or more of the horizontal indicator bars 10, 12 and 14. It can be appreciated that all of the horizontal bars should be blocked out for displaying a numeral 1 while only the central bar 12 should be blocked out for displaying the numeral 0.
  • a plurality of opaque shutter bars 36, 38 and 40 may be painted or otherwise formed on the vertically movable shutter members 30, 32 and 34 for blocking out the appropriate horizontal indicator bars.
  • the shutters may be formed of a relatively thin plastic material, and with such a construction, light which emanates from lamps 42 and 44 or other suitable light source may flow through the clear portions of the shutters 30, 32 and 34, and hence, through any of the unobstructed generally horizontal bars 10, 12 and 14 of the slotted numeral 8.
  • horizontally slidable shutters 46 and 48 and 50 are positioned behind the vertically slidable shutters for selectively obstructing the vertical bars 12, 16, 18 and 22 of the slotted FIG. 8 numerals of the display indicators 2, 4 and 6. It can be appreciated that the upper left vertical bar 18 should be blocked out to display numerals l, 2 and 3 while it would be unobstructed to display the numerals 6, 8 and 9, for example.
  • the vertical shutter has to be moved to one position while the horizontally movable shutter is required to be moved to a different position.
  • the vertically movable shutter has to be moved to leave all of the horizontal bars 10, 12 and 14 unobstructed.
  • the horizontally movable shutter has to be moved to block out only the lower right and upper left vertical indicator bars 20 and 18, respectively.
  • twofaced rotatable cams 52, 54 and 56 are provided for moving the vertical shutters 30, 32 and 34, respectively, and the horizontal shutters 46, 48 and 50, respectively.
  • the front faces of each of the cams include a cam groove 60 for receiving a cam follower 62 in order to appropriately position the vertically movable shutters 30, 32 and 34.
  • the cam followers 62 may be integrally formed on a lever 64 which is connected at one end to the vertically movable shutters 30, 32 and 34 by means of a pivot 66 formed on the lever and a slot 68 integrally formed in the lower portion of the vertical shutters 30, 32 and 34.
  • the other ends of the levers for the vertically movable shutters may be suitably pivotally connected at 63 to the front plate 24 of the display indicators.
  • a cam groove 70 is formed in the rear face of the rotatable cams 52, 54 and 56 for moving the horizontal shutters 46, 48 and 50 back and forth behind the vertical shutters 30, 32 and 34.
  • a cam follower 72 which isformed on a lever 74 is positioned within the cam track 70 on the rear surface of the cams 52, 54 and 56.
  • the levers 74 may be mounted on the digital clock by means of pivots which may conveniently extend through the apertures 76.
  • a slot 78 is formed in the upper arms of the levers for receiving rearwardly extending lugs 80 which may be integrally formed on the horizontal shutters 46, 48 and 50.
  • a unique mechanism is positioned between the units and tens cams 52 and 54 for indexing the minutes cam once every minute and for simultaneously indexing the tens cam one increment at the instant that the units cam is being indexed a 10 increment, so that the units cam and the tens cam are simultaneously indexed to the next succeeding numbers when the units cam is being moved to its 10 increment.
  • special cam teeth 80 and 82 are integrally formed on the outer periphery of the earns 52 and 54 for cooperating with a pawl lever 84 which is positioned between the cams. As shown more particularly in FIGS.
  • the unique indexing mechanism includes a drive lever 86 which is pivotally mounted on the digital clock between the units and tens cams 52 and 54, respectively.
  • the lever 86 may include an integrally formed pivot shaft 88 having reduced end portions 90 and 92 which may be suitably sandwiched within apertures 94 and 96 which are formed in plates 98 and 100 of the digital clock.
  • FIGS. 8, 9, and 11 An arrangement for oscillating the drive lever 86 to provide a rapid clockwise advance stroke of about seconds duration and a slower return stroke once per minute is shown more particularly in FIGS. 8, 9, and 11.
  • the drive lever 86 is provided with two cam surfaces 102 and 104 for cooperating with an eccentric drive roller 106 mounted on a gear 108 that is rotated at one revolution per minute by a synchronous electric motor pinion 110. While the motor for driving the pinion 110 is not illustrated, it can be appreciated that it is a particular advantage that our unique drive arrangement may be operated with a synchronous motor having a relatively low power output.
  • the gear 108 and its eccentric roller 106 are rotated in a clockwise direction and when the roller 106 reaches the position illustrated in FIG. 9, it abuts the surface of the rapid advance cam 102 to pivot the upper portion of the drive lever 86 to the right about its lower pivot-88 to move a units pawl 112 of the pawl lever 84 to the right, as shown in FIG. 9, against a tooth 1140f the units cam to move the units cam 52 one increment to thereby actuate the units display indicator 2 to display a next succeeding numeral.
  • continued rotation of the eccentric roller moves the roller into contact with the return stroke cam surface 104 to move the drive lever 86 and the pawl lever 84 to the left as shown in FIG. 11.
  • the pawl lever 84 is uniquely shaped, weighted and pivoted so that the relatively small pawl lever 84 may reliably index both the units cam 52 and the tens cam 54.
  • the pawl lever 84 includes a central portion 116 which is loosely pivoted to the drive lever 86 by a pivot pin 118, a right-side portion having a units pawl 112 formed thereon for indexing the units cam and a left-side portion having a pawl 120 formed thereon for indexing the tens cam 54. As shown more particularly in FIG.
  • the pawl 84 is uniquely weighted by a counterweighted portion 113 in the vicinity of the units pawl 112 so that the pawl 112 gently rests on the units cam 52 as shown in FIG. 8. In this position, it can be appreciated that the tens pawl is located above the teeth 82 on the tens cam 54. Thus, during nine of the 10 incremental movements of the pawl lever 84, the tens pawl 120 clears the teeth 82 on the tens cam 54, and consequently, the tens cam 54 remains stationary.
  • the units display indicator 2 is rapidly indexed one incremental movement each minute by the eccentric roller 106 when it is moved against the rapid advance cam 102 and that the units and tens display indicators 2 and 4 are simultaneously rapidly indexed to their next succeeding positions once every 10 minutes when the parts are in the positions illustrated in FIG. 10.
  • a unique mechanism is also provided for rapidly indexing the hours digital display indicator 6 once every hour. The mechanism for achieving this is driven from the tens cam 54, and thus, the mechanism is arranged to simultaneously index the hours display indicator 6 on every sixth indexing movement of the tens cam. As shown more particularly in FIGS.
  • a six slotted geneva gear 124 and a two lug geneva driver 126 are positioned between the tens cam 54 and an hours cam 56.
  • the geneva driver 126 is positioned on the same axis as the tens cam gear 54 and may be directly keyed thereto by means of a radial lug 128 which is integrally formed with the tens cam gear 54.
  • an hour gear 130 may be positioned on the same axis as the hour cam 56 and keyed to the hour cam by means of a lug 132.
  • the geneva gear 124 may be formed of plastic to include an integrally formed toothed gear 134 which is arranged in mesh with the hour gear 130.
  • the geneva gear 124 and its integrally formed toothed gear 134 are positioned between the geneva driver 126 and the hour gear 130.
  • the tens of minutes cam 54 is provided with 12 teeth and the geneva driver 126 is formed to include two lugs 136 and 138 for driving the geneva gear 124.
  • one of the drive lugs 136 or 138 is brought into engagement with one of the six notches of the geneva gear to move the geneva gear one incremental movement to thereby advance the hour digital display indicator 6 to the next succeeding number.
  • TENS OF HOURS INDEXING MECHANISM In accordance with our invention, a unique low cost arrangement is provided for indicating tens of hours.
  • the only numeral that has to be displayed for indicating the tens of hours is the numeral 1.
  • This numeral represents the first numeral of the three succeeding hours 10, 11 and 12.
  • the tens of hours numeral could be a 0 or it would not be necessary to display any numeral.
  • our digital clock illustrated in FIG. 1 it is desired to display a numeral 1 or no number to indicate the tens of hours. As shown more particularly in FIGS.
  • digital display indicator 8 is not provided with a slotted numeral 8, but merely includes a generally vertical slot 140 for displaying a numeral 1 and a single shutter 142 is positioned behind the slotted numeral 1 for selectively blocking it out during the time positions from 1 oclock to 9 oclock while leaving the slot open to display a numeral 1 for the 10 oclock, I 1 oclock and 12 oclock positions.
  • the mechanism for indexing the shutter 142 from the 9 oclock to the 10 oclock position and from the 12 oclock to the 1 oclock position is achieved with the use of relatively few additional parts.
  • the hours cam gear 56 is uniquely formed with an additional cam surface 144 on its outer periphery for operating the tens of hours shutter 142.
  • the tens of hours shutter 142 is formed with a rightwardly extending lug 146 which is urged by gravity against the peripheral cam surface 144 of cam 56.
  • the lug 146 is moved from a high cam surface 150 of cam 144 to a low cam surface 152 of cam 144 to thereby permit shutter 142 to move from behind slot 140 in order to display a numeral 1.
  • the numeral 1 forms the first or tens numeral as the digital clock is moved to its 10 oclock position.
  • the lower surface 152 of cam 144 is three increments in length, and thus, the lug 146 remains on the lower surface 152 of the cam 144 during the l0, l1 and 12 oclock positions of our digital clock.
  • the geneva gear 124 rapidly makes its 13 incremental movement the lug 146 will be rapidly moved from the low cam surface 152 to the high cam surface 150 in order to block out the numeral 1 of the tens of hours indicator. At this time it can be appreciated that no numeral would be displayed in the tens of hours position while the numeral 1 would be displayed on the hours indicator 6 to show the 1 oclock position of the digital clock.
  • TIME SET ARRANGEMENT A low cost mechanism is uniquely incorporated with the aforedescribed structure for setting or resetting the digital display indicators 2, 4, 6 and 8 of our improved digital clock to indicate the correct time of day. As shown more particularly in FIGS. 2, 4 and 12, our setting mechanism is achieved by the provision of relatively few additional parts.
  • the principal component of the setting mechanism is a push-pull knob 154 which may rotate and slide on a stud 156 which is formed on a front wall of the clock.
  • a four-tooth sprocket or pinion 158 is integrally formed with the knob 154 for selective engagement with a lO-tooth sprocket 160 which is connected to the units cam 52 and display indicator 2, or a 12-tooth sprocket 162 which is connected to the tens of minutes cam 54 and display indicator 4.
  • the minutes sprocket 160 may be readily connected to the minutes cam gear 52 by a key lug 164 which is formed on a shaft portion of the minutes cam.
  • the sprocket 162 includes 12 teeth which are integrally formed with the geneva driver 126, and the geneva driver 126 is connected to the tens of minutes cam 54 by a key lug 128 which is formed on the tens of minutes cam.
  • the time set knob 154 is normally held by two compression springs 161 and 163 in an intermediate axial position where it engages neither the units nor the tens sprocket.
  • our improved digital clock driving mechanism and time set mechanism may be readily formed with relatively few parts. Many of the parts are arranged and shaped to perform a plurality of functions and they may be readily formed of plastic.
  • the uniquely formed hours cam 56-144 functions as both a hours cam and a tens of hours cam.
  • a cam groove is formed in its front face for moving a vertical shutter 38
  • a cam groove is formed in its rear surface for moving a horizontally movable shutter 46
  • a cam surface 144 is formed in its outer periphery for actuating the tens of hours shutter 142.
  • the geneva driver 126 is also uniquely formed to perform a plurality of functions. As shown more particularly in FIG. 3, a sprocket 162 is formed on the geneva driver 126 for cooperating with the time set knob 154 in order to set our improved digital clock.
  • a small pawl lever 84 is uniquely pivoted between the minutes cam and the tens of minutes cam for reliably actuating the cams.
  • the counterweighted pawl 112 is all that is required for holding the minutes pawl into engagement with the minutes cam 52.
  • a digital clock comprising:
  • a rotatable tens cam spaced from the units cam for progressively actuating the tens of minutes display indicator for displaying numerals to the left of the units numerals in order to display tens of minutes;
  • a drive lever pivotally mounted on said supporting means between said units and tens cams; a pawl lever having a central portion and two side portions, the central portion of said pawl lever being pivotally mounted on said drive lever, said pawl lever having a pawl formed in one of its side portions for engaging the units cam for moving the units cam one increment each minute;
  • said pawl lever having a pawl formed in its other side portion for engaging and moving the tens cam an increment every 10 minutes;
  • i. means for moving said drive lever through, one complete cycle of movement each minutefor causing a corresponding single incremental movement of the units cam pawl and the units cam every minute; and i j. means on the units cam for tilting the pawl lever to engage the pawl on the other side of the pawl lever with the tens cam to permit the drive lever and the pawl lever to move the tens cam one increment every ten minutes.
  • a digital clock comprising:
  • a rotatable units member for progressively actuating the minutes display indicator to display numerals from 0 thru 9 to indicate minutes;
  • a rotatable tens member spaced from the units member for progressively actuating the tens of minutes display indicator for displaying numerals to the left of the units numerals in order to display tens of minutes;
  • a units time set sprocket connected to said rotatable units member for rotation therewith;
  • a tens time set sprocket connected to said tens member for rotation therewith;
  • an axially movable and rotatable time set gear positioned between said units time set sprocket and said tens time set sprocket, said time set gear being axially movable inwardly to engage the tens time set sprocket in order to set the tens of minutes display indicator to the appropriate time of day, and said time set gear being axially movable outwardly to engage said units time set sprocket to rotate and set the units display indicator to the appropriate time of day.
  • a digital clock comprising:
  • a rotatable units member for progressively actuating the minutes display indicator to display numerals from 0 thru 9 to indicate minutes;
  • a rotatable tens member spaced from the rotatable units member for progressively actuating the tens of minutes display indicator for displaying numerals to the left of the units numerals in order to display tens of minutes;
  • a rotatable hours member spaced from the units and tens rotatable members for progressively actuating the hours display indicator for displaying numerals to the left of the units and tens of units numerals in order to display hours;
  • a geneva gear positioned between said geneva driver and said hour member for imparting an intermittent rapid motion to said hours member to move the hours member one increment for every six incremental movements of the tens member to thereby move the hours member one increment each hour.
  • a digital clock as defined in claim wherein an axially movable and rotatable time set gear and a tens time set member are operatively connected to each other for selectively rotating the geneva driver for setting the tens of minutes and hours display indicators.
  • a digital clock comprising:
  • a display indicator for visually displaying a numeral l to indicate tens of hours
  • a rotatable units member for progressively actuating the minutes display indicator to display numerals from 0 thru 9 to indicate minutes;
  • a rotatable tens member spaced from the rotatable units member for progressively actuating the tens of minutes display indicator for displaying numerals to the left of the units numerals in order to display tens of minutes;
  • a rotatable hours member spaced from the units and tens rotatable members for progressively actuating the hours display indicator for displaying numerals to the left of the units and tens of units numerals in order to display hours;
  • said rotatable hours member including a cam surface for actuating said tens of hours display indicator to display a numeral 1 during the 10, 1 f and 12 oclock positions of the digital clock.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
US00196479A 1971-11-08 1971-11-08 Digital clock Expired - Lifetime US3721087A (en)

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US19647971A 1971-11-08 1971-11-08

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US (1) US3721087A (xx)
JP (1) JPS5323102B2 (xx)
CH (2) CH568599B5 (xx)
DE (1) DE2254161C3 (xx)
FR (1) FR2159359B1 (xx)
GB (1) GB1408416A (xx)
HK (1) HK34776A (xx)

Cited By (10)

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JPS50968U (xx) * 1973-05-01 1975-01-08
US3965668A (en) * 1974-12-25 1976-06-29 Kabushiki Kaisha Tamura Denki Seisakusho Shutter type digital clock
US3977179A (en) * 1974-05-06 1976-08-31 Ebauches Bettlach S.A. Display mechanism for timepieces
USRE28985E (en) * 1972-04-07 1976-09-28 General Electric Company Alarm clock timer with manually operable reset mechanism
US4152853A (en) * 1977-10-11 1979-05-08 Lewis Robert L Multiple shutter digital device
US4178752A (en) * 1976-11-24 1979-12-18 Tamura Electric Works, Ltd. Shutter type digital clocks
US4193256A (en) * 1977-06-03 1980-03-18 Tamura Electric Works, Ltd. Digital clocks provided with time switch mechanisms
WO2020155850A1 (zh) * 2019-01-30 2020-08-06 许贵文 一种数字显示器与数字时间装置
USD1011071S1 (en) * 2021-07-05 2024-01-16 Yansong Jiao Tissue box
USD1011015S1 (en) * 2021-07-05 2024-01-16 Yansong Jiao Tissue box

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
JPS5115992A (ja) * 1974-07-31 1976-02-07 Tamura Electric Works Ltd Shatsutashikideijitaruhyojisochi
JPS51102599A (xx) * 1975-03-07 1976-09-10 Seikosha Kk
FR2882162B1 (fr) * 2005-02-11 2007-05-25 Zenith Internat Dispositif d'affichage numerique mecanique

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US2596370A (en) * 1949-12-28 1952-05-13 Teleregister Corp Cam and pawl transfer mechanism
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US3260343A (en) * 1961-12-26 1966-07-12 Maurice D Mccormick Spacing mechanism for power operated typewriters
US3295382A (en) * 1963-05-16 1967-01-03 Durant Mfg Co Stepping mechanism for electromechanical counters
US3397585A (en) * 1966-01-03 1968-08-20 Collins Radio Co Quick return drive linkage
US3465605A (en) * 1967-11-15 1969-09-09 Burroughs Corp Pawl and ratchet mechanism

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Publication number Priority date Publication date Assignee Title
US2734338A (en) * 1956-02-14 Zx-hour direct-reading clock
US2762190A (en) * 1945-05-28 1956-09-11 Holzner Adolf Cyclometer clock system
US2587277A (en) * 1949-01-05 1952-02-26 Bergman Jack Setting mechanism for direct reading numeral clocks
US2596370A (en) * 1949-12-28 1952-05-13 Teleregister Corp Cam and pawl transfer mechanism
US2645896A (en) * 1952-06-06 1953-07-21 Wickes Engineering And Constru 24-hour direct-reading clock
US2985998A (en) * 1955-11-14 1961-05-30 Holzner Adolf Cyclometer, counter or the like
US2968143A (en) * 1957-02-25 1961-01-17 Ebauches Sa Quick hand shift means
US3260343A (en) * 1961-12-26 1966-07-12 Maurice D Mccormick Spacing mechanism for power operated typewriters
US3295382A (en) * 1963-05-16 1967-01-03 Durant Mfg Co Stepping mechanism for electromechanical counters
US3397585A (en) * 1966-01-03 1968-08-20 Collins Radio Co Quick return drive linkage
US3465605A (en) * 1967-11-15 1969-09-09 Burroughs Corp Pawl and ratchet mechanism

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28985E (en) * 1972-04-07 1976-09-28 General Electric Company Alarm clock timer with manually operable reset mechanism
JPS5442690Y2 (xx) * 1973-05-01 1979-12-11
JPS50968U (xx) * 1973-05-01 1975-01-08
US3977179A (en) * 1974-05-06 1976-08-31 Ebauches Bettlach S.A. Display mechanism for timepieces
US3965668A (en) * 1974-12-25 1976-06-29 Kabushiki Kaisha Tamura Denki Seisakusho Shutter type digital clock
US4178752A (en) * 1976-11-24 1979-12-18 Tamura Electric Works, Ltd. Shutter type digital clocks
US4193256A (en) * 1977-06-03 1980-03-18 Tamura Electric Works, Ltd. Digital clocks provided with time switch mechanisms
US4152853A (en) * 1977-10-11 1979-05-08 Lewis Robert L Multiple shutter digital device
WO2020155850A1 (zh) * 2019-01-30 2020-08-06 许贵文 一种数字显示器与数字时间装置
GB2593276A (en) * 2019-01-30 2021-09-22 Sheu Kevin Digital display and digital time device
US20210325830A1 (en) * 2019-01-30 2021-10-21 Kevin Sheu Digital display and digital time device
GB2593276B (en) * 2019-01-30 2022-12-14 Sheu Kevin Mechanical segmented display for a clock
US11709460B2 (en) * 2019-01-30 2023-07-25 Kevin Sheu Digital display and digital time device
USD1011071S1 (en) * 2021-07-05 2024-01-16 Yansong Jiao Tissue box
USD1011015S1 (en) * 2021-07-05 2024-01-16 Yansong Jiao Tissue box

Also Published As

Publication number Publication date
CH568599B5 (xx) 1975-10-31
DE2254161A1 (de) 1973-05-10
DE2254161C3 (de) 1975-11-20
JPS4859867A (xx) 1973-08-22
GB1408416A (en) 1975-10-01
JPS5323102B2 (xx) 1978-07-12
CH1613472A4 (xx) 1975-04-15
FR2159359B1 (xx) 1977-01-14
FR2159359A1 (xx) 1973-06-22
DE2254161B2 (de) 1975-04-03
HK34776A (en) 1976-06-18

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Owner name: CHASE MANHATTAN BANK, N.A., THE

Free format text: SECURITY INTEREST;ASSIGNORS:TIMEX CORPORATION, A DE CORP.;TIMEX COMPUTERS LTD., A DE CORP.;TIMEX CLOCK COMPANY, A DE CORP.;AND OTHERS;REEL/FRAME:004181/0596

Effective date: 19830331