US3757513A - Cursor ring for a wrist watch - Google Patents

Cursor ring for a wrist watch Download PDF

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Publication number
US3757513A
US3757513A US00189666A US3757513DA US3757513A US 3757513 A US3757513 A US 3757513A US 00189666 A US00189666 A US 00189666A US 3757513D A US3757513D A US 3757513DA US 3757513 A US3757513 A US 3757513A
Authority
US
United States
Prior art keywords
cursor
bezel
graduations
circle
wrist watch
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
US00189666A
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English (en)
Inventor
I Tokunaga
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.)
Seikosha KK
Original Assignee
Seikosha KK
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 Seikosha KK filed Critical Seikosha KK
Application granted granted Critical
Publication of US3757513A publication Critical patent/US3757513A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G04B47/06—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer or compass
    • G04B47/061—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer or compass calculating scales for indicating relationship between quantity and time
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales

Definitions

  • a wrist watch having a cursor ring rotatably mounted Oct 16 1970 la an 45/102396 thereon, said cursor being formed with a first laterally p projecting portion having a cursor line thereon for set-
  • a bezel having grad- 235/6lR 61 6] uations on its surface may be rotatably mounted relative to a fixed graduated circle on said watch with the ⁇ 56] References Cited first projecting portion of the cursor ring in overlapping relation therewith.
  • this invention relates to wrist watches having calculating scales thereon.
  • Conventional wrist watches having a calculating scale thereon have not been provided with cursors so that it has proved difficult to read said calculating scales.
  • reading of said scales was possible, further, where special scales such as a trigonometrical function scale or a weights and measure conversion scale is also mounted on a wrist watch, it is extremely difficult to read the results of the calculation without a cursor.
  • a wrist watch having scale means and a cursor ring rotatably mounted on said wrist watch, said cursor ring means being formed with a first protruding portion in overlapping relation to said scale means having a cursor line thereon for reading said scale means, said cursor ring means also being formed with a second projecting portion for the manual rotation and positioning of said cursor ring.
  • Said scale means may include a bezel having graduations on its surface rotatably mounted on said watch and a fixed graduated circle on said watch, said cursor ring first projecting portion overlapping both said fixed and bezel graduations.
  • Said watch may include a gasket rotatably supporting said bezel on said fixed graduated circle.
  • Said bezel may be rotatably mounted on the outer periphery of said fixed graduated circle, said cursor ring means being rotatably mounted on the inner periphery of said fixed graduated circle.
  • an object of the present invention is to provide a cursor ring on a wrist watch for permitting fast, easy and accurate continual calculations through the use of calculating scales on sadi wrist watch.
  • a further object of the present invention is to provide a wrist watch having special scales such as calculating and conversion scales and having means for rapidly, easily and accurately performing continual multiplication, division or the like, utilizing logarithmic and/or trigonometric scales.
  • FIG. 1 is a plan view of a wrist watch incorporating the preferred embodiments of the arrangement according to the invention.
  • FIGS. 2 & 3 are partial cross-sectional views taken along lines I I and II II, respectively of FIG. 1.
  • the wrist watch according to the invention is provided with a fixed circle 1 having graduations on an upper side thereof, sadi fixed circle being secured to the watch case body 5 by an adhesive or the like.
  • a rotatable circle 2 is also provided with graduations on its upper side, which graduations are aligned with the graduations of said fixed circle and positioned adjacent the outer periphery thereof.
  • the rotatable circle is secured in a groove in the upper surface of a rotative bezel 4 by means of caulking or an adhesive, said bezel being rotatably mounted on watch case body 5.
  • a cursor ring 3 is rotatably mounted on the inner periphery of fixed circle 1.
  • Said cursor ring is formed with a first laterally extending protrusion 3a having a radially extending cursor line 3b formed in the undersurface thereof.
  • Said cursor line overlaps the graduations on both fixed circle 1 and rotatable circle 2 and serves as an index for setting said scales.
  • Cursor ring 3 is also formed with an outwardly projecting portion 3c which may be manually engaged by the finger of the wearer for the selective rotation and positioning of the cursor ring.
  • first projecting portion 3b is formed with a projection 3d on the outer periphery of the bottom surface thereof. Said projection is provided to protect cursor line 3b from abrasion by the graduations on the fixed and rotatable circles.
  • cursor ring 3 is mounted on the inner periphery of fixed circle 1 by means of an annular projection 3e which engages a corresponding notch in said fixed circle.
  • Bezel 4 is rotatably mounted on the watch by means of gasket 6 secured between said bezel and fixed circle I. Said gasket serves to control the rotative torque required to rotate said bezel.
  • a watch crystal 7 is also mounted on watch case body 5.
  • Cursor ring 3 is preferably formed of a transparent synthetic resin, and the torque required to rotate said cursor ring is controlled by the degree of the interference engagement between said cursor ring and fixed circle 1.
  • Cursor ring 3 may be secured to the exterior of the A rotative bezel 4, rather than being positioned on the inner periphery of fixed circle 1 adjacent glass 7.
  • the projection 3d on first projecting portion 3a may be omitted if said cursor is formed and mounted so as to avoid engagement between cursor line 3b and the graduations on teh bezel 4 and the fixed circle 1.
  • the arrangement according to the invention permits continual calculation utilizing scales on said fixed circle and rotative bezel, such as continual multiplication and division. Such continual calculations can be easily, rapidly and accurately performed through the use of the cursor ring according to the invention.
  • Additional special scales (not shown) can be fixed on the wrist watch in addition to the conventional logarithmic scale usually set forth on said fixed circle and bezel. Such special scales can include a trigonometrical function scale and a conversion scale. Accordingly, the arrangement according to the invention offers the advantage of great flexibility.
  • a wristwatch comprising scale means formed in an upper surface thereof; cursor ring means rotatably mounted on said wrist watch, said cursor ring means having a first outwardly projecting portion formed with a radially extending cursor line overlapping said scale means and a second projecting portion for manual rotation and positioning of said cursor ring relative to the scale means, said scale means including a bezel having graduations on its surface, said bezel being rotatably mounted on said watch and fixed graduated circle means, graduations of said bezel and said fixed circle means being substantially aligned, said cursor line of said cursor ring being in overlapping relation to at least a portion of both the graduations on said bezel and the graduations on said fixed ring, said rotatable bezel being mounted on the outer periphery of said fixed circle.
  • a wrist watch comprising a case body; a circle member fixed to said case body and having graduations on the outer surface thereof; a bezel rotatably mounted on said case body adjacent the outer periphery of said circle member, said bezel having graduations on the outer surface thereof substantially aligned with the graduations on said circle member; and cursor ring means rotatably mounted on the inner periphery of said circle member and formed with a laterally projecting portion having a radially extending cursor line formed therein, said cursor line being in overlapping relation with at least portions of the graduations on both said bezel and circle member.
  • a wrist watch as recited in claim 4 including gasket means intermediate said bezel and said fixed circle member for controlling the torque required for the rotation of said bezel.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Electric Clocks (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Electromechanical Clocks (AREA)
US00189666A 1970-10-16 1971-10-15 Cursor ring for a wrist watch Expired - Lifetime US3757513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970102396U JPS5017439Y1 (fr) 1970-10-16 1970-10-16

Publications (1)

Publication Number Publication Date
US3757513A true US3757513A (en) 1973-09-11

Family

ID=14326272

Family Applications (1)

Application Number Title Priority Date Filing Date
US00189666A Expired - Lifetime US3757513A (en) 1970-10-16 1971-10-15 Cursor ring for a wrist watch

Country Status (5)

Country Link
US (1) US3757513A (fr)
JP (1) JPS5017439Y1 (fr)
CH (2) CH1505871A4 (fr)
DE (1) DE2148990A1 (fr)
GB (1) GB1335115A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420264A (en) * 1981-09-18 1983-12-13 Citizen Watch Co., Ltd. Structure for preventing the rotating of a register ring of a diver's watch
US6164814A (en) * 1998-08-24 2000-12-26 Crow; Milton E. Watch having rotatable bezel
US20050017850A1 (en) * 2003-07-04 2005-01-27 Polar Electro Oy. Mechanical measuring device and a measuring method
US20060158966A1 (en) * 2005-01-20 2006-07-20 The Swatch Group Management Services Ag Watchcase with rotating cover-bezel
US7134784B1 (en) 2003-12-31 2006-11-14 James Marin Rotating bezel watch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243000B (en) * 1990-04-12 1994-03-23 Win Chief Ind Limited Improvements in watches
CH680330GA3 (en) * 1990-05-08 1992-08-14 Fuel consumption calculating slide rule - comprises fixed and rotary rings mounted on watch face with logarithmic scales
GB2358489A (en) * 1999-12-09 2001-07-25 Time Products Watch assembley

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241308A (en) * 1964-08-14 1966-03-22 Bill E Forney Flight watch adapter
US3431722A (en) * 1967-07-27 1969-03-11 Sindace Sa Timepiece case

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241308A (en) * 1964-08-14 1966-03-22 Bill E Forney Flight watch adapter
US3431722A (en) * 1967-07-27 1969-03-11 Sindace Sa Timepiece case

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420264A (en) * 1981-09-18 1983-12-13 Citizen Watch Co., Ltd. Structure for preventing the rotating of a register ring of a diver's watch
US6164814A (en) * 1998-08-24 2000-12-26 Crow; Milton E. Watch having rotatable bezel
US20050017850A1 (en) * 2003-07-04 2005-01-27 Polar Electro Oy. Mechanical measuring device and a measuring method
EP1505460A2 (fr) * 2003-07-04 2005-02-09 Polar Electro Oy Appareil mécanique et procédé pour enregistrer et montrer des données numériques
EP1505460A3 (fr) * 2003-07-04 2005-02-16 Polar Electro Oy Appareil mécanique et procédé pour enregistrer et montrer des données numériques
US7134784B1 (en) 2003-12-31 2006-11-14 James Marin Rotating bezel watch
US20060158966A1 (en) * 2005-01-20 2006-07-20 The Swatch Group Management Services Ag Watchcase with rotating cover-bezel
US7350969B2 (en) * 2005-01-20 2008-04-01 The Swatch Group Management Services Ag Watchcase with rotating cover-bezel

Also Published As

Publication number Publication date
DE2148990A1 (de) 1972-05-10
CH586926B5 (fr) 1977-04-15
GB1335115A (en) 1973-10-24
CH1505871A4 (fr) 1976-10-29
JPS5017439Y1 (fr) 1975-05-29
DE2148990B2 (fr) 1974-03-14

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