DE371859C - World clock - Google Patents

World clock

Info

Publication number
DE371859C
DE371859C DEH90453D DEH0090453D DE371859C DE 371859 C DE371859 C DE 371859C DE H90453 D DEH90453 D DE H90453D DE H0090453 D DEH0090453 D DE H0090453D DE 371859 C DE371859 C DE 371859C
Authority
DE
Germany
Prior art keywords
pointer
gear wheel
gear
twelve
hour hand
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
Application number
DEH90453D
Other languages
German (de)
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.)
RICHARD HIRSCH DIPL ING
Original Assignee
RICHARD HIRSCH DIPL ING
Publication date
Priority to DEH89870D priority Critical patent/DE368518C/en
Priority to DEH90453D priority patent/DE371859C/en
Application granted granted Critical
Publication of DE371859C publication Critical patent/DE371859C/en
Expired legal-status Critical Current

Links

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
    • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands

Landscapes

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

Description

Weltzeituhr. ,Den Gegenstand der Erfindung bildet eine weitere Ausgestaltung der im Patent 368518 beschriebenen Weltzeituhr. Das Wesen der Erfindung besteht .darin, daß auf dem Zifferblatt ein Zahnrad sitzt, das mit einem: doppelt so großen Zahnrad in Verbindung steht, das auf dem Stundenzeiger sitzt und dessen nach vorn gerichtete Fläche zwei verschiedene Farben zeigt, die der Tag- und Nachtzeit entsprechen. Bei zweimaliger Umdrehung des Stundenzeigers dreht sich das doppelt so große Zahnrad (Planetenrad) einmal. Die Einteilung -ist also so getroffen, daß innerhalb 24 Stunden eime einsmalige Umdrehung des großen Zahnrades erfolgt, wobei gleichzeitig in einer Aussparung des Zeigers die Farbe auf die Tag- oder Nachtzeit hinweist.World clock. Another embodiment of the world time watch described in patent 368518 forms the subject of the invention. The essence of the invention consists in the fact that a gear wheel sits on the dial, which is connected to a gear wheel that is twice as large, which sits on the hour hand and whose forward-facing surface shows two different colors, the daytime and nighttime correspond. When the hour hand rotates twice, the twice as large gear (planetary gear) rotates once. The division is made in such a way that within 24 hours there is a single rotation of the large gear wheel, with the color in a recess in the pointer indicating the time of day or night.

Auf der Zeichnung ist ein Au@führungsbeispiel der Erfindung zur Darstellung gebracht, und zwar zeigt Abb. i und 2 in größerem Maßstabe den Zeiger von der Seite bzw. von vorn gesehen. Auf dem Zeiger c sitzt das ZahnTa.d f, das mit einem Zahnrad e kämmt, dessen Zähnezahl halb so groß ist, wie die des. Zahnrades f. Durch das Übersetzungsverhältnis der beiden Zahnräder wie 2 zu i wird erreicht, daß bei einem einmaligen vollständigen Umlauf dieses Zeigers über das zwölfstündige Zifferblatt das Zahnrad f sich einhalbmal um die Welle i dreht. Die eine Hälfte des dem Beschauer zugekehrten Zahn.rad:es f trägt eine geschwärzte Scheibe g, die während zwölf Stunden in der Aussparung k erscheint (Nachtzeit), während der weiße Teil g' zum Ausdruck bringt, daß es sich um die Tagesstunden handelt.In the drawing, an exemplary embodiment of the invention is shown, namely, Fig. I and 2 shows the pointer seen on a larger scale from the side and from the front. On the pointer c sits the ZahnTa.df, which meshes with a gear e, the number of teeth of which is half as large as that of the gear f. The gear ratio of the two gears such as 2 to i achieves that with a single complete revolution of this pointer over the twelve-hour dial, the gear wheel f rotates around the shaft i one and a half times. One half of the cog wheel facing the observer: it f carries a blackened disk g that appears in recess k for twelve hours (nighttime), while the white part g 'expresses that it is the daytime hours.

Claims (1)

PATENT-ANsPRUCH: Weltzeituhr mit zwölfstündigem Zifferblatt nach Patent 368518, dadurch gekennzeichnet, daß im Drehpunkt des Stundenzeigers (c) ein unbewegliches Zahnrad (e) sitzt, das mit einem doppelt so großen, auf dem Stundenzeiger befestigten Zahnrad (f) im Eingriff steht, dessen Vorderseite je zur Hälfte geschwärzt und zur Hälfte weiß gehalten ist, so daß bei einer zweimaligen. Umdrehung des Zeigers infolge des Übersetzungsverhältnisses i zu 2 der beiden. Zahnräder (e, f) je zwölf Stunden die schwarze und j e zwölf Stunden die weiße Scheibe hinter der Aussparung k des Zeigers erscheint.PATENT CLAIM: World time clock with a twelve-hour dial according to patent 368518, characterized in that an immovable gear wheel (e) sits at the pivot point of the hour hand (c) and meshes with a gear wheel (f) that is twice as large and is attached to the hour hand, the front of which is blackened half and half white, so that in a double. Rotation of the pointer as a result of the gear ratio i to 2 of the two. Cogwheels (e, f) every twelve hours the black and every twelve hours the white disk appears behind the recess k of the pointer.
DEH90453D World clock Expired DE371859C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEH89870D DE368518C (en) World clock
DEH90453D DE371859C (en) World clock

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEH89870D DE368518C (en) World clock
DEH90453D DE371859C (en) World clock

Publications (1)

Publication Number Publication Date
DE371859C true DE371859C (en) 1923-03-19

Family

ID=34839309

Family Applications (2)

Application Number Title Priority Date Filing Date
DEH89870D Expired DE368518C (en) World clock
DEH90453D Expired DE371859C (en) World clock

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEH89870D Expired DE368518C (en) World clock

Country Status (1)

Country Link
DE (2) DE371859C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981807A (en) * 1956-02-13 1961-04-25 Raymond D Smith Day and night distinguishing clock controlled switch
CH664468GA3 (en) * 1986-07-15 1988-03-15 Watch indicating time in more than one time zone - uses supplementary 12-hour wheel on manually operable ring which drives day-and-night indicator disc

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981807A (en) * 1956-02-13 1961-04-25 Raymond D Smith Day and night distinguishing clock controlled switch
CH664468GA3 (en) * 1986-07-15 1988-03-15 Watch indicating time in more than one time zone - uses supplementary 12-hour wheel on manually operable ring which drives day-and-night indicator disc

Also Published As

Publication number Publication date
DE368518C (en) 1923-02-06

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