US3513653A - World time wristwatch - Google Patents

World time wristwatch Download PDF

Info

Publication number
US3513653A
US3513653A US694788A US3513653DA US3513653A US 3513653 A US3513653 A US 3513653A US 694788 A US694788 A US 694788A US 3513653D A US3513653D A US 3513653DA US 3513653 A US3513653 A US 3513653A
Authority
US
United States
Prior art keywords
time
wristwatch
dial
hour
world
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
US694788A
Inventor
William G Denardo
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.)
WILLIAM G DENARDO
Original Assignee
WILLIAM G DENARDO
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
Application filed by WILLIAM G DENARDO filed Critical WILLIAM G DENARDO
Application granted granted Critical
Publication of US3513653A publication Critical patent/US3513653A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/223—Arrangements for indicating different local apparent times; Universal time pieces with rotary disc, rotary bezel, or rotary dial

Definitions

  • FIG.1 WORLD :TIME WRISTWATCH Filed Dec. 28, '19s? FIG.1
  • FIG. 1 is a plan view of the face of the improved wristwatch embodying the present invention.
  • FIG. 2 is a diagrammatic plan view of a portion of the mechanism wherein only the parts required for the understanding of the invention have been shown.
  • FIG. 1 The present invention is shown in FIG. 1, wherein, the face of the wristwatch 1 containing the regular twelve hour dial 2 is smaller than the wristwatch casing 3 and is held in place by four brackets 4.
  • the hour hand 5 completes one revolution in twelve hours
  • minute hand 6 completes one revolution per hour
  • second hand 7 completes one revolution per minute.
  • On the outer periphery of the stationary wristwatch face 1 is a circular opening '8, and below the opening 8 is a manually rotatable disk 9 with an aperture 10 through which is visible rotary disk 11.
  • Rotary disk 11 containing the twentyfour hour dial 12 representative of universal time completes one revolution in twentyfour hours by suitable watch mechanism and gearing in synchronization with hour hand 5 and minute hand 6.
  • a stationary annular rim 14 with the names imprinted upon it of geographical locations 15 for the twenty-four time zones in their positional arrangement relative to the international date line.
  • Rim 14 is also viewed through aperture 10.
  • Rotatable disk 9 containing aperture 10 is manually revolved by suitable gearing by rotating knob 16 to find the locality 15 for which the correct time is desired. Since the hour hand 5 and universal twenty-four hour dial 12 will have been synchronized to indicate the same time on both graduations, the universal time 12 and locality desired 15 will be in juxtaposition. The corresponding time 12 of any desired locality 15 can now be read through aperture 10 for all the time zones by manually rotating disk 9 by means of knob 16.
  • the world time wristwatch provides a novel device, which is easily understood, for instantly reading the standard time of localities in different time zones. Changes in detail may be made to the form of invention heren shown and described, without departing from the spirit of the invention.
  • a universal adapted wristwatch to indicate local time for the observer and for principal localities in the various time zones around the world on a twenty-four hour system comprising a stationary dial having twelve hour graduations thereon repersentative of local time, below said dial a larger rotatable circular disk with an aperture, said circular disk having means whereby it may be manually rotated, below said circular disk a rotary dial concentric with said stationary dial, said rotary dial having twenty-four hour graduations thereon representative of universal time, said rotary dial having means whereby it may be manually set to show the universal time corresponding to local time on said stationary dial, below said circular disk and concentric with said stationary and rotary dials is a stationary flat annular rim having a scale thereon with names representative of different geographical locations for the various time zones, an hour hand, a minute hand, means to drive said hour and minute hands and said rotary twenty-four dial, to indicate time for a locality shown on said annular rim visible through aperture in said circular disk.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Description

y 6, 1970 w. G. DENARDO 3,513,653
WORLD :TIME WRISTWATCH Filed Dec. 28, '19s? FIG.1
w 3 1s a 5 1. Kg) 15 INVENTOR United States Patent WORLD TIME WRISTWATCH William G. Denardo, 1684 9th Ave., San Francisco, Calif. 94122 Filed Dec. 28, 1967, Ser. No. 694,788 Int. Cl. G041) 19/22 US. Cl. 58-425 1 Claim ABSTRACT OF THE DISCLOSURE FIG. 1 is a plan view of the face of the improved wristwatch embodying the present invention.
FIG. 2 is a diagrammatic plan view of a portion of the mechanism wherein only the parts required for the understanding of the invention have been shown.
The present invention is shown in FIG. 1, wherein, the face of the wristwatch 1 containing the regular twelve hour dial 2 is smaller than the wristwatch casing 3 and is held in place by four brackets 4. The hour hand 5 completes one revolution in twelve hours, minute hand 6 completes one revolution per hour and second hand 7 completes one revolution per minute. On the outer periphery of the stationary wristwatch face 1 is a circular opening '8, and below the opening 8 is a manually rotatable disk 9 with an aperture 10 through which is visible rotary disk 11. Rotary disk 11 containing the twentyfour hour dial 12 representative of universal time completes one revolution in twentyfour hours by suitable watch mechanism and gearing in synchronization with hour hand 5 and minute hand 6. T wenty-four hour dial 12, which is viewed through opening 10, can be manually adjusted by suitable gearing by rotating knob 13. Below rotatable disk 9 and concentric to rotary disk 11 is a stationary annular rim 14 with the names imprinted upon it of geographical locations 15 for the twenty-four time zones in their positional arrangement relative to the international date line. Rim 14 is also viewed through aperture 10. Rotatable disk 9 containing aperture 10 is manually revolved by suitable gearing by rotating knob 16 to find the locality 15 for which the correct time is desired. Since the hour hand 5 and universal twenty-four hour dial 12 will have been synchronized to indicate the same time on both graduations, the universal time 12 and locality desired 15 will be in juxtaposition. The corresponding time 12 of any desired locality 15 can now be read through aperture 10 for all the time zones by manually rotating disk 9 by means of knob 16.
For the twenty-four hour dial, the time readings have been limited to hours only, since the minutes shown by the minute hand would be the same for international twentyfour time, as they are for local time.
An alphabetical list of the principal countries, states and cities of the world will accompany each wristwatch. The list will indicate the time zone they are in, as related to the localities shown on dial 14. Thus, it will be possible to immediately determine the time for major localities in the world.
The world time wristwatch provides a novel device, which is easily understood, for instantly reading the standard time of localities in different time zones. Changes in detail may be made to the form of invention heren shown and described, without departing from the spirit of the invention.
I claim:
1. A universal adapted wristwatch to indicate local time for the observer and for principal localities in the various time zones around the world on a twenty-four hour system, comprising a stationary dial having twelve hour graduations thereon repersentative of local time, below said dial a larger rotatable circular disk with an aperture, said circular disk having means whereby it may be manually rotated, below said circular disk a rotary dial concentric with said stationary dial, said rotary dial having twenty-four hour graduations thereon representative of universal time, said rotary dial having means whereby it may be manually set to show the universal time corresponding to local time on said stationary dial, below said circular disk and concentric with said stationary and rotary dials is a stationary flat annular rim having a scale thereon with names representative of different geographical locations for the various time zones, an hour hand, a minute hand, means to drive said hour and minute hands and said rotary twenty-four dial, to indicate time for a locality shown on said annular rim visible through aperture in said circular disk.
References Cited UNITED STATES PATENTS 2,189,639 2/ 1940 Manseau 58-43 2,305,508 12/1942 Woodrutf 58-43 2,615,298 10/1952 Ferrari 58-43 2,641,898 6/ 1953 Galley 58-43 RICHARD B. WILKINSON, Primary Examiner E. C. SIMMONS, Assistant Examiner US. Cl. X.R. 58-43, 127
US694788A 1967-12-28 1967-12-28 World time wristwatch Expired - Lifetime US3513653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69478867A 1967-12-28 1967-12-28

Publications (1)

Publication Number Publication Date
US3513653A true US3513653A (en) 1970-05-26

Family

ID=24790281

Family Applications (1)

Application Number Title Priority Date Filing Date
US694788A Expired - Lifetime US3513653A (en) 1967-12-28 1967-12-28 World time wristwatch

Country Status (1)

Country Link
US (1) US3513653A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323363A (en) * 1992-06-18 1994-06-21 Tiffany And Company Timepiece with simultaneous time display for at least two time zones
US5572489A (en) * 1995-04-19 1996-11-05 Asulab S.A. Timepiece with rotatable outer ring

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189639A (en) * 1938-12-12 1940-02-06 Waterbury Clock Company Differential time-reckoning device
US2305508A (en) * 1940-08-13 1942-12-15 Albert N Woodruff Clock
US2615298A (en) * 1946-01-31 1952-10-28 Ferrari Ruggero Universal and ordinary clock
US2641898A (en) * 1950-06-22 1953-06-16 Tissot Horlogerie Universal timekeeper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189639A (en) * 1938-12-12 1940-02-06 Waterbury Clock Company Differential time-reckoning device
US2305508A (en) * 1940-08-13 1942-12-15 Albert N Woodruff Clock
US2615298A (en) * 1946-01-31 1952-10-28 Ferrari Ruggero Universal and ordinary clock
US2641898A (en) * 1950-06-22 1953-06-16 Tissot Horlogerie Universal timekeeper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323363A (en) * 1992-06-18 1994-06-21 Tiffany And Company Timepiece with simultaneous time display for at least two time zones
US5572489A (en) * 1995-04-19 1996-11-05 Asulab S.A. Timepiece with rotatable outer ring

Similar Documents

Publication Publication Date Title
US4579460A (en) Synchronous world clock
US3633354A (en) World-time indicator timepiece
US2910825A (en) Geographical timepiece
US2128970A (en) Space-time clock
US2056089A (en) Horological instrument and related devices
JPH0617100Y2 (en) World clock
US2305508A (en) Clock
RU2223525C2 (en) Universal chronometer for determination of latitude and longitude
US3472021A (en) World time clock system
EP0769733A1 (en) Timepiece
US3513653A (en) World time wristwatch
US2395643A (en) Clock dial
US197246A (en) Improvement in geographical clocks
JPS595987A (en) World watch
US2661903A (en) Navigation counter
US3545199A (en) Combined timepiece and compass
US2169956A (en) World time indicating device
US2044808A (en) Mechanical calendar
US641540A (en) Geographical clock.
US2657525A (en) Universal time clock and hour angle indicator
US2148907A (en) Universal time indicating attachment for clocks
US811585A (en) Universal timepiece.
US3653202A (en) Timepiece
US3073032A (en) Instrument for determining sidereal and solar time
US428588A (en) Time-piece dial