US3276201A - Watch time zone indicator - Google Patents

Watch time zone indicator Download PDF

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Publication number
US3276201A
US3276201A US428357A US42835765A US3276201A US 3276201 A US3276201 A US 3276201A US 428357 A US428357 A US 428357A US 42835765 A US42835765 A US 42835765A US 3276201 A US3276201 A US 3276201A
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US
United States
Prior art keywords
pipe
hour hand
auxiliary
hand
rotation
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
US428357A
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English (en)
Inventor
Dan C Peacock
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US428357A priority Critical patent/US3276201A/en
Priority to CH94866A priority patent/CH461380A/de
Application granted granted Critical
Publication of US3276201A publication Critical patent/US3276201A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands
    • G04B19/235—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands mechanisms for correcting the additional hand or hands

Definitions

  • An object of the present invention is to provide a time zone indicator mechanism adaptable to a standard watch which is capable of simultaneously indicating the correct time in two time zones by means of the standard hour hand and an auxiliary hour hand and can also be set to indicate the time in a different time zone by merely manipulating the same winding crown and stem ordinarily used to adjust the hands for the correct time.
  • Another object of the present invention is to provide a time zone indicator mechanism of the character above which is designed for incorporation in existing watch movements with a minimum required alteration of existing parts at a point in the clockworks which enables convenient factory assembly; and which involves a simple organization of co-functioning parts capable of affording dependable and durable operation throughout a long life expectancy.
  • FIGURE 1 is a plan view of a watch embodying the invention.
  • FIGURE 2 is a plan view of a watch embodying the invention with the dial face and hands removed.
  • FIGURE 3 is a fragmentary perspective view of a part of the modified watch mechanism on an enlarged scale.
  • FIGURE 4 is a side elevation of a portion of the modified watch mechanism taken substantially along the line 4-4 of FIGURE 3.
  • FIGURE 5 is a cross-section taken substantially along the line 5-5 of FIGURE 4.
  • FIGURE 6 is a plan view of the modified watch mechanism.
  • FIGURE 7 is a plan view of the watch mechanism with the cover, face and hands removed.
  • FIGURE 8 is a plan view of the modified watch.
  • FIGURE 9 is a plan view of the modified watch with the face, cover and hands removed.
  • the watch time zone indicator of the present invention is especially designed for use in a watch movement including a rotatable staff 6 and a minute hand 7 connected thereto, a regular hour hand pipe 8 mounted for rotation coaxially of said staff and carrying a regular hour hand 9, and a rotatable stem 11 operatively connected to the hands for selective manual setting thereof and consists briefly of: an auxiliary member 12 mounted coaxially to said staff and releasably connected to the hour hand pipe for rotation therewith and having a time indicating auxiliary hand 13; and means actuated by the stem for selectively effecting angular displacement between the regular and auxiliary hour hands.
  • FIGURES 1 and 4 A wristwatch of ordinary construction is shown in FIGURES 1 and 4 and consists briefly of a barrel assembly 16 rotatably mounted on a barrel arbor 17 and carrying a gear 18 in engagement with a center pinion 21 in connection with staff 6 and carrying a center wheel 22 in connection with a third pinion 23 mounted on third shaft 24 and carrying a third wheel 26 is engagement with fourth pinion 27 rotatably mounted for rotation on fourth shaft 28 and carrying fourth wheel 29 in connection with an escape wheel not shown.
  • the minute hand 7 is tightly pressed onto the cannon pinion 31 which is frictionally fitted to staff 6, so they revolve together as a unit.
  • the cannon pinion drives the minute wheel 32, and the pinion 33 drives the hour wheel 34.
  • the hour wheel is freely mounted on the cannon pinion to perm1t it to revolve at its own slower rate of speed.
  • the hour wheel is fitted to the hour hand pipe for rotation therewith.
  • Auxiliary member 12 is carried by and in frictional engagement with the regular hour hand pipe 8 and is mounted coaxially of staff 6.
  • Auxiliary hour hand 13 frictionally mounted on auxiliary member 12 is preferably a thin hand located beneath minute hand 7 and hour hand 9 so that it can be covered by regular hour hand 9 and travel therewith when not indicating a different time zone.
  • Auxiliary hand 13 may also be of different coloring to visually offset it from the regular hour and minute hands.
  • auxiliary member 12 is formed with an upstanding pipe 36 having an annular slotted portion 37 formed therein for receiving a harp spring 38 mounted for rotation on auxiliary member 12.
  • Spring ends 39 and 40 frictionally grip regular hour hand pipe for normal rotation therewith.
  • auxiliary member 12 is formed with a radially extending flange 45 presenting a camming surface having a vertical face 41 so that a cam stop follower 42 mounted on the frame 43 by a fastener 44 will ride thereon and permit uninterrupted counterclockwise rotation when the cam stop 42 moves into engagement with vertical face 41.
  • staff 6 turns minute hand .7 one complete rotation every sixty minutes and hour wheel 34 turns regular hour hand 9 through one complete revolution every twelve hours.
  • Auxiliary member 12 frictionally connected to regular hour pipe 8 by harp spring 38 causes auxiliary hour hand -to rotate one complete revolution every twelve hours in simultaneous movement with the regular hour hand.
  • winding crown 57 is merely rotated so that auxiliary hour hand, regular hour hand and minute hands are turned in a counterclockwise direction until cam stop follower 42 is moved into engagement with ventical face 41 of the camming surface of auxiliary member 12.
  • cam stop follower 42 is moved into engagement with ventical face 41 of the camming surface of auxiliary member 12.
  • vertical faces 41 could be formed in auxiliary member 12 but one is suflicient for all practical purposes.
  • Vertical face 41 may be placed at any angular point on auxiliary member 12 but is here shown as coinciding with the hour of 9.
  • auxiliary hand 13 is rotated counterclockwise until it reaches the hour of 9 as shown in FIGURE 8.
  • the auxiliary hand 13 may be set at any selected time interval from the regular hour hand 9 thus indicating the time in any two different time zones in the world selected.
  • a watch movement including a frame, a regular hour hand pipe mounted for rotation and carrying a regular hour hand, and a manually engageable and displacea-ble stem operatively connected to said pipe for setting said hand;
  • auxiliary member mounted on said pipe in frictional engagement therewith providing normal joint rotation of said pipe and member, said frictional engagement between said member and pipe providing for forced relative angular displacement and said auxiliary member having an annular cam surface providing a cam stop follower engaging portion;
  • stop means mounted on said frame including a cam follower positioned to ride on said cam surface and restraining counterclockwise rotation of said auxiliary member upon engagement with said cam stop follower engaging portion to permit said relative angular displacement upon counterclockwise displacement of said regular hour hand pipe by said stem.
  • a watch movement including a frame, a regular hour hand pipe mounted for rotation and carrying a regular hour hand, and a manually engageable and displaceable stem operatively connected to said pipe for setting said hand;
  • an auxiliary member mounted on said pipe and including an auxiliary hour hand;
  • auxiliary member having an annular cam surface providing a cam stop follower engaging portion
  • stop means mounted on said frame including a cam follower positioned to ride on said cam surface and permitting clockwise rotation and restraining coun terclockwise rotation of said auxiliary member upon engagement with said cam stop follower engaging portion at a particular point to permit relative angular displacement upon counterclockwise displacement of said regular hour hand pipe past said point by said stem.
  • a watch movement including a frame, a rotatable staff and a minute hand connected thereto, a regular hour hand pipe rotatably and coaxially mounted in relation to said staff and carrying a regular hour hand, and a rotatable stem connected to said hands for selective manual clockwise and counterclockwise setting thereof;
  • an auxiliary member mounted coaxially of said staff and having a radially extended flange presenting a camming surface
  • cam stop follower mounted on said frame and engaging said camming surface
  • said camming surface being formed with a cam stop follower engaging portion so as to permit clockwise rotation of said auxiliary member and to prevent more than one complete counterclockwise revolution of said auxiliary member thus effecting angular displacement between said regular and auxiliary hour hands.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US428357A 1965-01-27 1965-01-27 Watch time zone indicator Expired - Lifetime US3276201A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US428357A US3276201A (en) 1965-01-27 1965-01-27 Watch time zone indicator
CH94866A CH461380A (de) 1965-01-27 1966-01-25 Uhrwerk, das ausser der Lokalzeit auch die Ablesung der in einer einstellbaren Zeitzone herrschenden Zeit gestattet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US428357A US3276201A (en) 1965-01-27 1965-01-27 Watch time zone indicator

Publications (1)

Publication Number Publication Date
US3276201A true US3276201A (en) 1966-10-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US428357A Expired - Lifetime US3276201A (en) 1965-01-27 1965-01-27 Watch time zone indicator

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US (1) US3276201A (sk)
CH (1) CH461380A (sk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710567A (en) * 1971-02-09 1973-01-16 Omega Brandt & Freres Sa Louis Calendar watch with isolated hour hand changing means combined with synchronization gearing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB677196A (en) * 1949-08-29 1952-08-13 Rolex Montres Improvements in universal watches
US2674085A (en) * 1952-10-08 1954-04-06 Robert S Israel Time zone watch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB677196A (en) * 1949-08-29 1952-08-13 Rolex Montres Improvements in universal watches
US2674085A (en) * 1952-10-08 1954-04-06 Robert S Israel Time zone watch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710567A (en) * 1971-02-09 1973-01-16 Omega Brandt & Freres Sa Louis Calendar watch with isolated hour hand changing means combined with synchronization gearing

Also Published As

Publication number Publication date
CH94866A4 (sk) 1968-04-11
CH461380A (de) 1968-10-15

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