US3869855A - Acoustical sound producer for clocks, especially for wristwatches - Google Patents

Acoustical sound producer for clocks, especially for wristwatches Download PDF

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Publication number
US3869855A
US3869855A US479943A US47994374A US3869855A US 3869855 A US3869855 A US 3869855A US 479943 A US479943 A US 479943A US 47994374 A US47994374 A US 47994374A US 3869855 A US3869855 A US 3869855A
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US
United States
Prior art keywords
pin
sound producer
watch crystal
wristwatches
clocks
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
US479943A
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English (en)
Inventor
Walter E Sodler
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.)
Timex Group USA Inc
Original Assignee
Timex Corp
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 Timex Corp filed Critical Timex Corp
Application granted granted Critical
Publication of US3869855A publication Critical patent/US3869855A/en
Assigned to CHASE MANHATTAN BANK, N.A., THE reassignment CHASE MANHATTAN BANK, N.A., THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREDERIKSPLEIN HOLDING 1970 B.V., TIMEX CLOCK COMPANY, A DE CORP., TIMEX COMPUTERS LTD., A DE CORP., TIMEX CORPORATION, A DE CORP., TIMEX ENTERPRISES, INC., A BERMUDA CORP., TIMEX GROUP LTD., A BERMUDA CORP., TIMEX MEDICAL PRODUCTS LTD., A BERMUDA CORP., TIMEX N.V.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/02—Constructional details

Definitions

  • ABSTRACT A sound producer for a watch with a pin of ferromagnetic material attached to the watch crystal and directly excited by an electromagnetic system.
  • the present invention relates to an acoustical sound producer for clocks, especially for Wristwatches, with a pin attached to the watch crystal, said pin being able to be oscillated by means of an electromagnetic system excited by an oscillator.
  • a wristwatch with an electrically driven sound producer of this general type in which a plastic pin is formed to the plastic crystal is already known in US. Pat. No. 3,462,943 issued Aug. 26, I969.
  • the electromagnetic system which is excited by a common, selfstarting oscillator circuit, has an electromagnet arranged on a support between two permanent magnets as well as a tongue which is firmly clamped on one side and capable of oscillating, which projects beyond the poles of the permanent magnets and the electro magnet, and extends roughly at right angles to the pin formed on the watch crystal. If the oscillator excites the electromagnetic system, the oscillating tongue strikes the pin, thus exciting the watch crystal which serves as a resonator.
  • the watch crystal must naturally be excited with its natural frequency. Since, as a result of striking the pin, the tongue does not oscillate sinusoidally, the watch crystal is excited with a frequency spectrum, whose composition depends to an extremely great degree on the amplitude of the tongue. Adjustment of the electromagnetic system relative to the pin, temperatures and the charge of a battery thus significantly influence the exciting frcquencies, so that there is a great danger of the watch crystal no longer being excited with its natural frequency.
  • the object of the invention to create an acoustical sound producer of the type mentioned at the outset in such a manner that the watch crystal is more likely to be excited with its natural frequency than with the known designs.
  • the sound producer be designed in such a manner that the pin is at least partially of ferromagnetic or magnetic material and extends into the alternating magnetic field of the electromagnetic system for direct excitation.
  • the electromagnetic system as a whole must be adjusted relative to the pin of the watch crystal.
  • this pin can be excited so as to produce sinusoidal oscillations, as the excitation is not produced by striking.
  • FIG. 1 shows a vertical cross section through the watch crystal and the other members of the sound producer, with the exception of the excited oscillator circuit
  • FIG. 2 shows a cross section along line 22 in FIG. 1;
  • FIG. 3 shows a cross section along line 3-3 in FIG. 1.
  • the drawing shows a watch crystal 10 of plastic. Attached in a projection 12 formed on the watch crystal is an iron pin 14 which, as can be seen from FIGS. 1 and 3, has the shape of a strip of sheet metal and is of ferromagnetic or magnetic material.
  • Attached on a plate 16 of the watch, which is otherwise not illustrated, by means of a mounting angle 18 is an electromagnetic system, consisting primarily of an electro magnet 20 and two permanent magnets 22.
  • the electro magnet has a coil 20a, surrounding a core 20b, whose free end forms one of the poles of the electro magnet. All magnets are attached to mounting angle 18, with pole shoes 24 being attached to the poles of permanent magnets 22 which face away from the latter and whereby pin 14 extends into the electromagnetic field between said pole shoes 24.
  • a conventional self-starting oscillator (not shown) which is switched on by the watch at the selected time, excites electro magnet 20 with the aid of mounting angle 18, the electromagnetic system 20, 22 is adjusted relative to pin 14 in such a manner that pin 14 does not adhere to core 20b, whereby watch crystal 10 is excited with its resonance frequency, to which of course the unillustrated oscillator circuit must also be matched.
  • a significant advantage of the sound producer according to the invention is also to be viewed into the fact that with it good feedback of the natural frequency of watch crystal 10 to the exciting oscillator circuit can be achieved.
  • An acoustical sound producer for clocks especially for Wristwatches, comprising a watch crystal, an electromagnet system adapted to be excited by an oscillator, and a pin attached to the watch crystal, said pin being at least partially of ferromagnetic or magnetic material and extending into the alternating magnetic system for direct excitation.
  • said electromagnetic system has an electro magnet arranged between two permanent magnets, pole shoes attached on the poles of the permanent magnets facing said pin with the free end of the pin being located be tween said pole shoes and in front of one pole of the electro magnet.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
US479943A 1973-07-05 1974-06-17 Acoustical sound producer for clocks, especially for wristwatches Expired - Lifetime US3869855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2334236A DE2334236C2 (de) 1973-07-05 1973-07-05 Akustischer Signalgeber für Uhren, insbesondere Armbanduhren

Publications (1)

Publication Number Publication Date
US3869855A true US3869855A (en) 1975-03-11

Family

ID=5886039

Family Applications (1)

Application Number Title Priority Date Filing Date
US479943A Expired - Lifetime US3869855A (en) 1973-07-05 1974-06-17 Acoustical sound producer for clocks, especially for wristwatches

Country Status (13)

Country Link
US (1) US3869855A (cg-RX-API-DMAC7.html)
JP (1) JPS5050072A (cg-RX-API-DMAC7.html)
AU (1) AU476145B2 (cg-RX-API-DMAC7.html)
BE (1) BE817298A (cg-RX-API-DMAC7.html)
CA (1) CA1011562A (cg-RX-API-DMAC7.html)
CH (2) CH590517B5 (cg-RX-API-DMAC7.html)
DE (1) DE2334236C2 (cg-RX-API-DMAC7.html)
DK (1) DK359174A (cg-RX-API-DMAC7.html)
FR (1) FR2236223B3 (cg-RX-API-DMAC7.html)
GB (1) GB1432884A (cg-RX-API-DMAC7.html)
HK (1) HK76676A (cg-RX-API-DMAC7.html)
NL (1) NL7409142A (cg-RX-API-DMAC7.html)
SE (1) SE389564B (cg-RX-API-DMAC7.html)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604718A (en) * 1994-07-25 1997-02-18 Asulab S.A. Timepiece Comprising an electro-acoustic transducer
US6476710B2 (en) * 2000-04-24 2002-11-05 Citizen Electronics Co., Ltd. Electromagnetic sound generator
US20080165630A1 (en) * 2005-03-11 2008-07-10 Richemont International Sa Device For Fixing At Least One Striking Going in Timepiece and Method of Fixing at Least One Striking Gongs in a Timepiece
US20080273426A1 (en) * 2005-03-31 2008-11-06 Yves Corthesy Timepiece Comprising an Alarm
EP2228693A1 (fr) * 2009-03-13 2010-09-15 Daniel Roth et Gérald Genta Haute Horlogerie SA Dispositif de fixation pour timbres d'une montre a sonnerie
CN102566406A (zh) * 2010-12-10 2012-07-11 蒙特雷布勒盖股份有限公司 用于表或音乐盒的击打机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5661897A (en) * 1979-10-24 1981-05-27 Hitachi Ltd Display unit
CH632385B (fr) * 1979-11-02 Ebauchesfabrik Eta Ag Montre a dispositif avertisseur electro-acoustique.
JP2624412B2 (ja) * 1991-09-30 1997-06-25 ワイケイケイ株式会社 隠しスライドファスナー用経編テープ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462943A (en) * 1966-02-17 1969-08-26 Paolo A Spadini Alarm wristwatch
US3733804A (en) * 1971-09-29 1973-05-22 Timex Corp Electronic alarm watch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462943A (en) * 1966-02-17 1969-08-26 Paolo A Spadini Alarm wristwatch
US3733804A (en) * 1971-09-29 1973-05-22 Timex Corp Electronic alarm watch

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604718A (en) * 1994-07-25 1997-02-18 Asulab S.A. Timepiece Comprising an electro-acoustic transducer
US6476710B2 (en) * 2000-04-24 2002-11-05 Citizen Electronics Co., Ltd. Electromagnetic sound generator
US20080165630A1 (en) * 2005-03-11 2008-07-10 Richemont International Sa Device For Fixing At Least One Striking Going in Timepiece and Method of Fixing at Least One Striking Gongs in a Timepiece
US7545706B2 (en) * 2005-03-11 2009-06-09 Richemont International Sa Device for fixing at least one striking gong in timepiece and method of fixing at least one striking gongs in a timepiece
US20080273426A1 (en) * 2005-03-31 2008-11-06 Yves Corthesy Timepiece Comprising an Alarm
US7742362B2 (en) * 2005-03-31 2010-06-22 Lvmh Swiss Manufactures Sa Timepiece comprising an alarm
US20100214884A1 (en) * 2005-03-31 2010-08-26 Yves Corthesy Timepiece comprising an alarm
US7881161B2 (en) 2005-03-31 2011-02-01 Lvmh Swiss Manufactures Sa Timepiece comprising an alarm
CN101833280A (zh) * 2009-03-13 2010-09-15 丹尼尔·罗斯与杰罗德·吉塔高级钟表股份公司 用于敲响报时表的锣安装装置
US20100232262A1 (en) * 2009-03-13 2010-09-16 Daniel Roth & Gerald Genta Haute Horlogerie Sa Gong mounting device for striking watch
EP2228693A1 (fr) * 2009-03-13 2010-09-15 Daniel Roth et Gérald Genta Haute Horlogerie SA Dispositif de fixation pour timbres d'une montre a sonnerie
CN101833280B (zh) * 2009-03-13 2013-08-21 丹尼尔·罗斯与杰罗德·吉塔高级钟表股份公司 用于敲响报时表的锣安装装置
US8540420B2 (en) * 2009-03-13 2013-09-24 Bulgari Horlogerie S.A. Gong mounting device for striking watch
CN102566406A (zh) * 2010-12-10 2012-07-11 蒙特雷布勒盖股份有限公司 用于表或音乐盒的击打机构
US8559277B2 (en) 2010-12-10 2013-10-15 Montres Breguet Sa Striking mechanism for a watch or a music box
CN102566406B (zh) * 2010-12-10 2014-06-04 蒙特雷布勒盖股份有限公司 用于表或音乐盒的击打机构

Also Published As

Publication number Publication date
DK359174A (cg-RX-API-DMAC7.html) 1975-02-24
DE2334236C2 (de) 1975-07-10
NL7409142A (nl) 1975-01-07
DE2334236B1 (de) 1974-11-14
CH590517B5 (cg-RX-API-DMAC7.html) 1977-08-15
SE7408733L (cg-RX-API-DMAC7.html) 1975-01-07
FR2236223A1 (cg-RX-API-DMAC7.html) 1975-01-31
SE389564B (sv) 1976-11-08
GB1432884A (en) 1976-04-22
JPS5050072A (cg-RX-API-DMAC7.html) 1975-05-06
CH584874A4 (cg-RX-API-DMAC7.html) 1977-01-31
HK76676A (en) 1976-12-17
BE817298A (fr) 1974-11-04
CA1011562A (en) 1977-06-07
AU476145B2 (en) 1976-09-09
AU7051774A (en) 1976-01-08
FR2236223B3 (cg-RX-API-DMAC7.html) 1977-05-06

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CHASE MANHATTAN BANK, N.A., THE

Free format text: SECURITY INTEREST;ASSIGNORS:TIMEX CORPORATION, A DE CORP.;TIMEX COMPUTERS LTD., A DE CORP.;TIMEX CLOCK COMPANY, A DE CORP.;AND OTHERS;REEL/FRAME:004181/0596

Effective date: 19830331