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IPC 7
 
G04-G04B01934
  G04B 21/00 - G04B 49/04  

SECTION G – PHYSICS


G 04HOROLOGY


G 04 BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at preselected times or after predetermined time intervals G04C 23/00; clocks or watches with stop devices G04F 7/08; structural details or housings specially adapted for electronic time-pieces with no moving parts G04G 17/00)


Note

 This subclass covers mechanically-driven calendar clocks or clockwork calendars, and the mechanical part of such clocks or calendars.


Subclass Index

DRIVING MECHANISM 

G04B 1/00 

WINDING 

Normal; automatic; combined 

G04B 3/00; G04B 5/00; G04B 7/00 

Supervision; winding parts 

G04B 9/00; G04B 11/00 

CLOCK MOVEMENT 

Escapement; frequency stabiliser; setting frequency gearwork; adjusting thereof 

G04B 15/00; G04B 17/00; G04B 18/00; G04B 13/00; G04B 35/00 

TIME INDICATING 

G04B 19/00, G04B 21/00, G04B 23/00, G04B 25/00 

TIME SETTING 

G04B 27/00 

FRAMEWORKS; SUPPORTS; CALIBERS 

G04B 29/00; G04B 31/00; G04B 33/00 

PROTECTION OF CLOCKWORK 

Cases; crystals, glasses; other protection means 

G04B 37/00; G04B 39/00; G04B 41/00, G04B 43/00 

UNUSUAL CLOCKS 

G04B 45/00, G04B 47/00, G04B 49/00 



Driving mechanisms


1/

00Driving mechanisms

1/

02.with driving weight

1/

04..Mechanisms in which the clockwork acts as the driving weight

1/

06..with several weights

1/

08..Driving weights; Chains; Chain wheels; Arbors for chain wheels

1/

10.with mainspring

1/

12..with several mainsprings

1/

14..Mainsprings; Bridles therefor (mainsprings with bridles G04B 1/18; alloys C22C; springs in general F16F)

1/

16..Barrels; Arbors; Barrel axles (arrangements facilitating the removal of the mainspring G04B 33/14)

1/

18..Constructions for connecting the ends of mainsprings with the barrel or the arbor

1/

20...Protecting arrangements against rupture or overwinding of the mainspring located in the barrel or attached to the barrel (in connection with keys or the like G04B 3/06, G04B 3/10; in connection with automatic winding devices G04B 5/24)

1/

22..Compensation of changes in the motive power of the mainspring (by mechanical shaping of the mainspring G04B 1/14)

1/

24.with both mainsprings and driving weights

1/

26.driven by liquids or gases; Liquid or gaseous drives for mechanically-controlled secondary clocks


Winding


3/

00Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously

3/

02.Removably-mounted keys or the like

3/

04.Rigidly-mounted keys, knobs, or crowns (divided winding stems G04B 37/06)

3/

06.Keys or the like with means preventing overwinding (protecting devices arranged in, or attached to, the barrel G04B 1/20; in connection with automatic winding devices G04B 5/24)

3/

08.by parts of the cases

3/

10..Protecting means preventing overwinding (arranged in, or attached to, the barrel G04B 1/20; in connection with keys G04B 3/06; in connection with automatic winding devices G04B 5/24)

3/

12.by mechanical means, e.g. pneumatic motor (winding-up with electric or electromechanical means G04C)


5/

00Automatic winding-up

5/

02.by self-winding caused by movement of the watch

5/

04..by oscillating weights the movement of which is limited

5/

06...acting in one direction only

5/

08...acting in both directions

5/

10..by oscillating weights the movement of which is not limited

5/

12...acting in one direction only

5/

14...acting in both directions

5/

16..Construction of the weights

5/

18..Supports, suspensions, or guide arrangements, for oscillating weights

5/

19...Suspension of the oscillating weight at its centre of rotation  [3]

5/

20.by movements of other objects, e.g. by opening hand-bag, by opening case, by opening door; Winding-up by wind power

5/

22.by thermometric, barometric, or like effects or alterations

5/

24.Protecting means preventing overwinding (arranged in, or attached to, the barrel G04B 1/20; in connection with keys or the like G04B 3/06; in connection with parts of the cases G04B 3/10)


7/

00Combined normal and automatic winding-up


9/

00Supervision of the state of winding, e.g. indicating the amount of winding

9/

02.Devices controlled by such state, e.g. device affording protection against overwinding (protecting means preventing overwinding arranged in or on the barrel G04B 1/20; protecting means in connection with keys or the like G04B 3/06; in connection with parts of the cases G04B 3/10; in connection with automatic winding devices G04B 5/24)


11/

00Click devices; Stop clicks; Clutches

11/

02.Devices allowing the motion of a rotatable part in only one direction  [3]

11/

04..Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet  [3]



13/

00Gearwork

13/

02.Wheels; Pinions; Spindles; Pivots (bearings G04B 31/00)


15/

00Escapements (electric or magnetic means for converting oscillatory to rotary motion in electromechanical time-pieces G04C 5/00)

15/

02.permanently in contact with the regulating mechanism

15/

04..Cylinder escapements

15/

06.Free escapements

15/

08..Lever escapements

15/

10.with constant impulses for the regulating mechanism

15/

12.Adjusting (tools therefor G04D 1/02); Restricting the amplitude of the lever or the like

15/

14.Component parts or constructional details, e.g. construction of the lever or the escape wheel


17/

00Mechanisms for stabilising frequency  [3]

17/

02.Oscillators acting by gravity, e.g. pendulum swinging in a plane

17/

04.Oscillators acting by spring tension

17/

06..Oscillators with hairsprings, e.g. balance

17/

08..Oscillators with coil springs stretched and unstretched axially

17/

10..Oscillators with torsion strips or with springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane

17/

20.Compensation of mechanisms for stabilizing frequency

17/

22..for the effect of variations of temperature (alloys independent of variations of temperature C22C)

17/

24..for the effect of variations of atmospheric pressure

17/

26..for the effect of variations of the impulses

17/

28..for the effect of unbalance of the weights, e.g. tourbillon

17/

30.Rotating governors, e.g. centrifugal governors, fan governors (for striking mechanism G04B 21/06)

17/

32.Component parts or constructional details, e.g. collet, stud

17/

34..for fastening the hairspring onto the balance  [3]


18/

00Mechanisms for setting frequency  [3]

18/

02.Regulator devices; Indexing devices  [3]

18/

04.Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat  [3]

18/

06..by setting the collet or the stud of a hairspring  [3]

18/

08.Component parts or constructional details  [3]


Time indicating


19/

00Indicating by visual means (by electric lamps G04C 17/02; display arrangements in general G09)

19/

02.Back-gearing arrangements between gear train and hands

19/

04.Hands; Discs with a single mark or the like

19/

06.Dials (for time-pieces without clockwork G04B 49/04)

19/

08..Geometrical arrangement of the graduations

19/

10..Ornamental shape of the graduations or the surface of the dial; Attachment of graduations to the dial

19/

12..Selection of materials for dials or graduations

19/

14..Fastening the dials to the clock or the watch plates

19/

16..Shiftable dials, e.g. indicating alternately from 1 to 12 and from 13 to 24

19/

18..Graduations on the crystal or glass, on the bezel, or on the rim

19/

20.Indicating by numbered bands, drums, discs, or sheets

19/

21..Drums  [3]

19/

22.Arrangements for indicating different local apparent times; Universal time-pieces

19/

23..by means of additional hands or additional pairs of hands  [3]

19/

24.Clocks or watches with date indicators; Clockwork calendars

19/

243..characterised by the shape of the date indicator  [3]

19/

247...disc-shaped  [3]

19/

25....Devices for setting the date indicators manually  [3]

19/

253....Driving or releasing mechanisms  [3]

19/

257...drum-shaped  [3]

19/

26.Clocks or watches with indicators for tides, for the phases of the moon, or the like

19/

28.Adjustable guide marks or pointers for indicating determined points of time

19/

30.Illumination of dials or hands

19/

32..by luminescent substances

19/

34.Position of the hands projected optically

   G04B 21/00 - G04B 49/04  
 

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