US3735580A - Clock - Google Patents

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Publication number
US3735580A
US3735580A US00258414A US3735580DA US3735580A US 3735580 A US3735580 A US 3735580A US 00258414 A US00258414 A US 00258414A US 3735580D A US3735580D A US 3735580DA US 3735580 A US3735580 A US 3735580A
Authority
US
United States
Prior art keywords
case
dial
clockwork movement
side wall
clock
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
US00258414A
Other languages
English (en)
Inventor
R Nava
G Romani
D Soffientini
A Subert
A Ubertazzi
P Vetter
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.)
Cohel Compagnie Dhorlogerie et Electronique SA
Original Assignee
Cohel Compagnie Dhorlogerie et Electronique SA
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 Cohel Compagnie Dhorlogerie et Electronique SA filed Critical Cohel Compagnie Dhorlogerie et Electronique SA
Application granted granted Critical
Publication of US3735580A publication Critical patent/US3735580A/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
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/049—Mountings for sound-damping
    • 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
    • G04B37/00—Cases
    • G04B37/0066—Cases for wall clocks and balances

Definitions

  • ABSTRACT A clock has a clockwork movement enclosed in a soundproof case of expanded plastic material having a substantially non-porous smooth outer surface and a sponge-like inner cellular structure. The dial and hands and, possibly, a sonorous alarm are located outside the case.
  • This invention relates to clocks, and is particularly concerned with soundproof clocks in which the noise of a mechanical clockwork movement is rendered inaudible.
  • FIGURE of the accompanying drawings is a schematic cross-section through an embodiment of an alarm clock according to the invention, given by way of example.
  • the alarm clock shown comprises a clockwork movement 1 enclosed in a soundproof case including a main body portion 2 and a rear wall 3.
  • the two parts of the case are made by; moulding an expanded plastic material with a substantially non-porous smooth outer surface and an elastic inner cellular structure formed by sponge-like pores which have good sound absorbing properties.
  • Suitable materials are natural or synthetic rubber, polyvinyl chloride and polyurethane, although the latter two materials are to be preferred.
  • the outer surfaces of both parts of the case, or simply the visible outer surface of the portion 2 may, if required, be coated with a second material either to increase the rigidity of the case or for decorative purposes.
  • the main body portion 2 is formed of a circular front .wall 2' with an elongate cylindrical central aperture 12 and a substantially cylindrical sidewall 2" extending rearwardly from the front wall.
  • An assembly of coaxial pipes 13, 13 and a central shaft 14 fixed to the clockwork movement 1 protrude through the aperture 12, the inner pipe 13' and the shaft 14 being driven in conventional manner by the clockwork movement at a rate of one revolution per 12 hours and one revolution per hour respectively.
  • the dial 16 has a circular central aperture 16' for the assembly of pipes 13, 13' and carries, at the periphery of its outer face, conventional hour and minute divisions.
  • a transparent disc 17 is securely fixed to the outer pipe 13, and carries thereon at least one reference mark, not shown. Outside this disc 17, hour and min utes hands 8 are mounted on the pipe 13' and the shaft 14 respectively so as to give, in cooperation with the divisions on the dial 16, an indication of time.
  • a transparent cover 7 is fixed by means of an O-ring 9 onto the ring 15, this cover 7 including a shoulder 18 against which the periphery of disc 17 is rotatably mounted, and a central opening 18 for the shaft 14.
  • An external knurled knob 19 is secured to the outer end of shaft 14 to permit setting of the hands 8.
  • the rear wall 3 fits against the clockwork movement 1 between the cylindrical inner surface of the side wall 2", said side wall 2" extending rearwardly of the wall 3 to form a rear recess 20 therewith.
  • An opaque cover 6 of sound transmitting material is fitted in said side wall 2" to close the recess 20.
  • a schematically shown sonorous alarm including a gong 4 secured to the wall 3 by means of a screw 4' engaging in a threaded socket 4" embedded in the wall 3, a hammer 5 and a driving mechanism 21 for the hammer 5, is mounted in the recess 20.
  • the cover 6 also carries at least one control member 10 for the alarm, said member 10 beingrotatably mounted on a shaft 10 passing through an aperture in the wall 3 and operatively connected to the clockwork movement 1.
  • control member 10 By means of this control member 10, the outer pipe 13 and disc 17 can be rotated to set the mark thereon to show the time at which the alarm mechanism is to be triggered.
  • a second pushbutton control member 11 mounted in a recess in the wall 2" enables the alarm mechanism to be blocked, in a conventional manner.
  • Other control members, for example for winding the alarm mechanism, may also be included.
  • the case 2 absorbs practically all of the sound of the clockwork movement 1, in particular that of the escapement mechanism.
  • the sound of the alarm is not appreciably attenuated. Moulding of the case enables the described clock to be manufactured at a relatively low cost price.
  • the moulded case moreover has a good resistance to shocks and ensures a good protection of the clockwork movement against humidity, dust and atmospheric pollutions.
  • a clock comprising a clockwork movement, a substantially soundproof case of expanded plastic material enclosing said clockwork movement, said material having an inner cellular structure, a dial fixed outside said case, an elongate cylindrical aperture passing through said case and said dial, a coaxial pipe driving assembly driven by said clockwork movement, said assembly 3 passing through said aperture and protruding beyond said dial, and time indicating members drivably mounted on a part of said assembly protruding beyond said dial.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US00258414A 1971-07-05 1972-05-31 Clock Expired - Lifetime US3735580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH987571A CH547520A (enrdf_load_stackoverflow) 1971-07-05 1971-07-05

Publications (1)

Publication Number Publication Date
US3735580A true US3735580A (en) 1973-05-29

Family

ID=4356617

Family Applications (1)

Application Number Title Priority Date Filing Date
US00258414A Expired - Lifetime US3735580A (en) 1971-07-05 1972-05-31 Clock

Country Status (5)

Country Link
US (1) US3735580A (enrdf_load_stackoverflow)
CH (2) CH547520A (enrdf_load_stackoverflow)
DE (1) DE2226499A1 (enrdf_load_stackoverflow)
FR (1) FR2144657B1 (enrdf_load_stackoverflow)
IT (1) IT956503B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110088695A (zh) * 2016-12-20 2019-08-02 斯沃奇集团研究和开发有限公司 由复合材料制成的钟表部件

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907310A (en) * 1927-02-18 1933-05-02 Waldheim John Clock silencing device
US1907282A (en) * 1929-09-10 1933-05-02 Waldheim John Means to control the sound of an alarm
US2012002A (en) * 1934-02-23 1935-08-20 Finch Clark Soundproof clock case
US2491453A (en) * 1945-06-09 1949-12-13 William L Gilbert Clock Corp Soundproof clock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907310A (en) * 1927-02-18 1933-05-02 Waldheim John Clock silencing device
US1907282A (en) * 1929-09-10 1933-05-02 Waldheim John Means to control the sound of an alarm
US2012002A (en) * 1934-02-23 1935-08-20 Finch Clark Soundproof clock case
US2491453A (en) * 1945-06-09 1949-12-13 William L Gilbert Clock Corp Soundproof clock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110088695A (zh) * 2016-12-20 2019-08-02 斯沃奇集团研究和开发有限公司 由复合材料制成的钟表部件
CN110088695B (zh) * 2016-12-20 2021-03-30 斯沃奇集团研究和开发有限公司 由复合材料制成的钟表部件

Also Published As

Publication number Publication date
IT956503B (it) 1973-10-10
FR2144657A1 (enrdf_load_stackoverflow) 1973-02-16
DE2226499A1 (de) 1973-01-25
FR2144657B1 (enrdf_load_stackoverflow) 1974-07-26
CH987571A4 (enrdf_load_stackoverflow) 1973-10-31
CH547520A (enrdf_load_stackoverflow) 1974-03-29

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