FR2839374A1 - Instrument for determining the legal time in one state from knowledge of that in another, comprises outer disk with 24 hours marked and inner concentric disk divided into 24 time zones - Google Patents

Abstract

An outer disk (1) is divided into 24 sectors representing the 24 hours of a day. A second smaller disk (2) is may be rotated on the outer disk about a common axis (3) and is divided into 24 time zones with indication of the Greenwich meridian (10) and the international date line (13). If the two disks are rotated to make the local time at a known time zone coincide, the local time and universal time for any other time zone is indicated An Independent claim is also included for : Utilisation of the instrument in offices, aircraft and boats

Description

processor. The present invention relates to a device which allows, without

  calculation and by simple reading: -first: to know the hour locale regale of a state (or of a large region of a state) when one knows the local time regale of another state ; -secondly: to know the UTC time from the local time of a state or

  of a large region of a state, and vice versa.

  Note: UTC stands for: universal time coordinated "= universal time, UTC time, formerly known as GMT, is the time of the time zone containing the Greenwich meridian which is taken as the meridian of origin Wile is also called time < "Zulu" because this timezone has received the letter "Z" as an international denomination (see below) UTC or Zulu time is used for aircraft flight plans, for sea or air navigation, for the

telex messages, etc ...

  At present, to determine the local time of a second state when one knows that of a first state, one must search in an atlas, an encyclopedia, or a dictionary to know what is the number of hours to be added or subtracted from the local time of the first state according to the local time of the second state (which does not always use the time of the

  its geographical position) and then perform an addition or a subtraction.

  Ledispositifse10n [Invention removes this search in

  different documentation and calculations.

  The basic model of this device is constituted: on the one hand: two juxtaposesconcentric disks (1) and (2) of diameter dlfferent, 16cm and 13 crn (by way of example not limitatit), in contact with each other and pivoting one relative to each other, around a common axis (3) connecting their respective center, on the tease model of the device this axis is fixed on the right inner part of a support (4) (made of paper, cardboard, plastic, pvc, etc ... list no) imitative) which opens in two, "portfolio" style; -and on the other hand: an alphabetical index of the states with for each of them the name of its time zone, in international denomination: << A, << B >>, etc ... On the basic model this index is written on the support (4) of the device, but can also be written on an independent schedule. Given the large number

  This alphabetical list is not reproduced in this document.

  The device is illustrated in FIGS. 1 to 5 attached: FIG. 1 represents the half open device, in perspective and without registration; FIG 2 shows the device with its support (4), open, flat, seen from the inside and without registration; FIG. 3 represents the two disks (1) and (2), as they constitute the device; FIG. 4 represents disks (1) and (2) dissociated from one another;

  FIG. 5 illustrates the examples of use.

  With reference to these figures: -on the large disk (1) wind carried at its periphery (in crown) the 24 hours (5) of the Earth day, in the opposite direction of clockwise; -the small disk (2) is divided into 24 sectors of 15, each sector represents a time zone (6) or wind registered $: -se international denomination letter (7): a Z >> for the original time zone (Greenwich), A to M (without the J) to the east and N to Y to the west; -the number of hours (8) of difference (+ or -) with the UTC time On this small wind record also inscribed: -the original time zone (9) marked at Z >> + a UTC >>, containing Greenwich meridian (10); -the names of continents and states using multiple time zones (11); the names of French overseas departments and territories (12);

  the date change line (13).

  By knowing the local time of a first state (usually the one one is) to know the local time in a second state it is enough: to look for it in the alphabetical index (not joined) the name of the timezone, in an international denomination, of the first state of which we know the local time: time zone A >>, a B >>, or C '>, etc. 2-to rotate by hand the small disk (2) in order to have the spindle of the first state conciliated with its current local time found on the crown of the large disc (1), - 3 3-to search in ['alphabetical index the name of the spindle time of the second state whose local time is sought: spindle <A >>, << B >>, or << C >>, etc. 4-on the crown of the large disc (2) opposite this spindle on read the local time of the second state; Example illustrated in Figure 6: determination of the local time of another state: a traveler is in French Guiana where it is 10 o'clock in the morning and he wants to know the local time of Tahiti at the same time: 1- he looks in ['index alphabetique (not attached) the spindle of French Guiana: it is the spindle << P >>, 2-he rotates by hand the small disk (2) so as to make concide this spindle with the local time: 10:00, read on the crown of the big disc (1), 3-he looks in ['alphabetical index (not attached) the time zone of Tahiti: it is the spindle << W >>, 4 -on the crown of the large disc (1) in front of the spindle W >> iJ reads the time

Local Tahiti: 03HOO in the morning.

  Example shown in FIG. 7: determination of "UTC" time: The same traveler who has just performed operations 1 and 2 can directly fire UTC or Zulu time on the ring of the large disk ( 1) in

  spindle face mark UTC >>: 1 3HOO.

  Depending on its use: for office, handheld, portable for ships, aircraft, etc..The device can be constituted by discs of variable diameter and made in different materials: paper, cardboard, wood, glass, plastics

  couples, semi rigid or rigid, PVC, metal, Plexiglas, plastifies, rubber, etc ...

  (non-exhaustive list). The common axis is constituted by any device allowing

  the pivoting of the discs between them rivet, collapse, tip, etc.

  The device according to the invention is intended to determine the local time of a state when the local time of another state is known and to determine the UTC time of a state when its local time is known

and vice versa.

- 4

Claims (5)

claims   (1) -Device for determining: - the local time of a state when the local time of another state is known;   UTC time when we know the local time of a state and vice versa.   This device is characterized by: - a main element consists of two concentric discs (1) and (2), uxtaposes, of different diameters, manufactured in a rigid, semi-rigid or flexible material, in contact with each other, and pivoting, by manual action, around a common axis (33 connecting their respective centers) These two disks represent the primary element of the present patent denomination, and a secondary element which consists of an alphabetical index (not attached in the present document) which gives the name of the patent. time zone, in international appellation (A, B, C, etc.) for each state Depending on the size of the device, this index is written either on the medium (4) or on the verve of the large disk (2) or   on a sheet attached to the device.   2) -Dispositif according to claim 1 characterized in that: - the large disk (1) is graduated on its crown the 24 hours (5) of the earth day, in the opposite direction of clockwise; - small disk (2) is divided into 24 sectors of 15 degree each representing a time zone (6) or wind inscribed: - the international denomination letter (7) of the time zone: A, B. C, etc. - the number of hours (8) difference with UTC time; -the following inscriptions are carried on the small disk (2): -the original time zone (9) marks KZ>) and << UTC >>, containing the Greenwich meridian (10), - the names of the continents and states using several time zones arranged according to their regal time (11); -the names of French overseas departments and territories (12);   the date change line (13). r 2839374,   3) -Device according to any one of the preceding claims   Characterized by the fact that it carries an alphabetical index allowing to find for each state the name of its timezone in international appellation as well as   than the difference in hours (plus or minus) with the original time zone.   4) -Dispositif according to any revendicaffon6 preceded characters oe that the manual pivoting of the two discs around common axis) makes it possible to coincide the time zone [recorded on the disc (2) 3 of a first state with its local time that we know about the disc crown (1): the local time of another state then read directly on the disc crown (1) in front of the time zone [disc (2) ) of the latter state. Once this operation is performed, the UTC time can then be read   directly on the disc crown (1) opposite the time zone UTC / Z >>.   6) Use of the device according to one of the preceding claims   Characterized by its adaptability on a desk (with additional foot on the back),