US2700868A - Self-winding watch overwind preventer - Google Patents

Self-winding watch overwind preventer Download PDF

Info

Publication number
US2700868A
US2700868A US376409A US37640953A US2700868A US 2700868 A US2700868 A US 2700868A US 376409 A US376409 A US 376409A US 37640953 A US37640953 A US 37640953A US 2700868 A US2700868 A US 2700868A
Authority
US
United States
Prior art keywords
pawl
self
weight
winding
mainspring
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
US376409A
Other languages
English (en)
Inventor
Feigel Anton
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.)
Individual
Original Assignee
Individual
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
Priority to CH298950D priority Critical patent/CH298950A/fr
Application filed by Individual filed Critical Individual
Priority to US376409A priority patent/US2700868A/en
Application granted granted Critical
Publication of US2700868A publication Critical patent/US2700868A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G04B5/00—Automatic winding up
    • G04B5/24—Protecting means preventing overwinding

Definitions

  • the most simple device for this purpose which is most frequently used, comprises a loose piece of thicker mainspring coiled inside the barrel.
  • the outer end of the mainspring is riveted to said piece which engages the inner wall of the barrel frictionally.
  • a disadvantage of such known device is that the friction only ensures an approximate regulation or adjustment of the mainspring tension, which spring generally functions near its maximum tension. Furthermore, the spring is liable to get uncoiled in abrupt steps. Finally, the manufacture of 1sjuch lwatches necessitates the construction of a special arre.
  • Objects of my present invention are to eliminate the disadvantages of these known devices, to use a minimum of parts and elements, and to provide accuracy in the function of the device for regulating the mainspring tension.
  • a recess 3 is provided in the upper face of the rockable weight 1, which is pivoted on the axle 2 situated in the center of the watch movement.
  • the bridge of weight 1 is partly shown at 4.
  • a pawl 6 On a pin 5 fixed to weight 1 and situated in recess 3, is pivoted a pawl 6 of which the tip 7 coacts with the teeth of the winding pinion 8 which is pivoted on axle 2 of weight 1.
  • a spring lever 9 is pivoted in recess 3 on a pin 10 fixed to weight 1. The movement of lever 9 to the right in the drawing is limited by a stop stud 11 fixed to weight 1.
  • a screw having an eccentric head 12 is mounted in a threaded bore of weight 1 to coact with a face 13 of the lower portion 14 of lever 9 and permits to regulate the latters tension.
  • the stud 11 is arranged on the weight 1 in such a position relative to the pawl 6 and the finger 15 of lever 9 is of such a curved shape, that pawl 6 just abuts against the extremity of finger 15 when it is in engagement with pinion 8 as shown in the drawing.
  • a cover 20, only partly shown, is secured to weight 1 by two screws 21 and 22 and holds pawl 6 and the springs 9 and 16 in place in recess 3.
  • Pinion 8 is connected to the barrel arbor and ensures the winding of the mainspring by gearwheels (not shown).
  • the eccentric screw 12 allows of accurately and quickly regulating the tension of spring lever 9, corresponding to the upper limit of tension of the mainspring, thus ensuring a greater security of operation than in the devices known so far.
  • a self-winding watch of the type involving a rockable weight pivoted on an axle pin situated in the center of the watch movement the improvement comprising a pawl pivoted to said weight, a pinion disposed coaxially with said weight in pivotal relation and adapted to wind the mainspring of the watch movement, a spring lever pivoted to said weight to engage said pawl, and a leaf spring secured to one end of said pawl and abutting against said weight, the whole in such arrangement that said pawl engages said pinion under the action of said spring lever and against the action of said leaf spring, and the spring lever permits said pawl to disengage itself from said pinion when the tension of said mainspring exceeds a certain upper limit.
  • a self-Winding watch as set out in claim 1, in which the spring lever holds the pawl in its engaging position through pressure action.
  • a self-winding watch as set out in claim 1, in which the spring lever yields to the pressure of the pawl when the tension of the mainspring reaches its upper limit.
  • a self-winding watch as set out in claim 1, in which a screw having an eccentric head and mounted in a threaded bore of the rockable weight coacts with a face of the spring lever to permit to regulate the tension of the spring lever.
  • a self-winding watch as set out in claim 1, in which a stop stud fixed to the rockable weight limits the swing of the spring lever.
  • a self-winding watch as set out in claim 1, in which the pawl and spring lever and leaf spring are disposed in a recess in the top face of the rockable weight.
  • a self-winding watch as set out in claim 6, in which a cover plate secured to the rockable weight by screws covers the pawl and spring lever and leaf spring and holds them in place for their respective functions.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
US376409A 1951-05-23 1953-08-25 Self-winding watch overwind preventer Expired - Lifetime US2700868A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH298950D CH298950A (fr) 1951-05-23 1951-05-23 Montre à remontage automatique par masse rotative.
US376409A US2700868A (en) 1951-05-23 1953-08-25 Self-winding watch overwind preventer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH298950T 1951-05-23
US376409A US2700868A (en) 1951-05-23 1953-08-25 Self-winding watch overwind preventer

Publications (1)

Publication Number Publication Date
US2700868A true US2700868A (en) 1955-02-01

Family

ID=61827364

Family Applications (1)

Application Number Title Priority Date Filing Date
US376409A Expired - Lifetime US2700868A (en) 1951-05-23 1953-08-25 Self-winding watch overwind preventer

Country Status (2)

Country Link
US (1) US2700868A (fr)
CH (1) CH298950A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019595A (en) * 1957-08-20 1962-02-06 Murrle Kurt Inertia wound watch with overwind preventer
US3058294A (en) * 1958-06-16 1962-10-16 Durowe A G Inertia wound timepiece with magnetic coupling means
US3299508A (en) * 1965-04-26 1967-01-24 Eversharp Inc Safety razor having predetermined overload yielding means
US20160246256A1 (en) * 2015-02-23 2016-08-25 Montres Breguet S.A. Chronograph mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1853637A (en) * 1929-01-22 1932-04-12 Perpetual Self Winding Watch C Self winding watch
US1973898A (en) * 1932-04-26 1934-09-18 Firm Autorem S A Winding mechanism for timepiece driving springs
US2179855A (en) * 1938-05-25 1939-11-14 Charles A Latimer Automatic pressure release ratchet wrench

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1853637A (en) * 1929-01-22 1932-04-12 Perpetual Self Winding Watch C Self winding watch
US1973898A (en) * 1932-04-26 1934-09-18 Firm Autorem S A Winding mechanism for timepiece driving springs
US2179855A (en) * 1938-05-25 1939-11-14 Charles A Latimer Automatic pressure release ratchet wrench

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019595A (en) * 1957-08-20 1962-02-06 Murrle Kurt Inertia wound watch with overwind preventer
US3058294A (en) * 1958-06-16 1962-10-16 Durowe A G Inertia wound timepiece with magnetic coupling means
US3299508A (en) * 1965-04-26 1967-01-24 Eversharp Inc Safety razor having predetermined overload yielding means
US20160246256A1 (en) * 2015-02-23 2016-08-25 Montres Breguet S.A. Chronograph mechanism
US11454931B2 (en) 2015-02-23 2022-09-27 Montres Breguet S.A. Chronograph mechanism

Also Published As

Publication number Publication date
CH298950A (fr) 1954-05-31

Similar Documents

Publication Publication Date Title
US2700868A (en) Self-winding watch overwind preventer
US3019595A (en) Inertia wound watch with overwind preventer
US3550928A (en) Coil spring
US2942486A (en) Self-winding watches
US3735583A (en) Mechanism for hand-setting and winding
GB1402432A (en) Calender timepiece
US2698066A (en) Power reserve indicator
US1853637A (en) Self winding watch
US2798358A (en) Alarm movement
US3142743A (en) Momentary actuator for precision snap switch
US3827235A (en) Winding and setting mechanism for watches
US1860153A (en) Micrometer adjusting device for clocks and similar mechanisms
US2789410A (en) Alarm time-piece
US9310A (en) Timepiece
US2982085A (en) Winding and setting device for timepieces
US2640311A (en) Winding and setting mechanism for watch and clock movements and the like
US2955411A (en) Latch-out automatic rate regulator for timepieces
US2028594A (en) Self-winding watch
US1467427A (en) Watch-winding mechanism
US2749701A (en) Winding and hand-setting mechanism for timepieces
US2441847A (en) Watch regulator mechanism
US1785267A (en) Regulator for clock movements
US2949170A (en) Device in time meters for limiting at two determined end positions the motion of a member movable in two opposite directions
US3478508A (en) Watch regulator
US2669832A (en) Wind and set mechanism for watches