US1616569A - Time train - Google Patents

Time train Download PDF

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Publication number
US1616569A
US1616569A US95713A US9571326A US1616569A US 1616569 A US1616569 A US 1616569A US 95713 A US95713 A US 95713A US 9571326 A US9571326 A US 9571326A US 1616569 A US1616569 A US 1616569A
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US
United States
Prior art keywords
spring
ratchet
dome spring
wheel
barrel
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
US95713A
Inventor
Benel Francois Ivan
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.)
CIE IND DE MECANIQUE HORLOGERE
INDUSTRIELLE DE MECANIQUE HORLOGERE Cie
Original Assignee
CIE IND DE MECANIQUE HORLOGERE
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 CIE IND DE MECANIQUE HORLOGERE filed Critical CIE IND DE MECANIQUE HORLOGERE
Application granted granted Critical
Publication of US1616569A publication Critical patent/US1616569A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/023—Driving, e.g. by springs or common drive with the clockwork; gears; escapements
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action

Definitions

  • the object of the present invention is to reduce the friction which, in known alarm clocks, is produced between the dome spring and the barrel wheel when the alarm clock is wound up. Its object is also to facilitate the replacement of a worn dome spring by a new dome sprlng.
  • An alarm clock according to the invention is characterized by the feature that the dome spring is loosely mounted upon an extended portion of the ratchet and is secured in a removable manner to the barrel wheel so that in order to wind up the clock it is possible to turn the barrel or main spring shaft without causing the dome spring to turn.
  • This dome spring thus remains pressed upon the barrel wheel so that all friction between these two members is obviated.
  • the invention also comprises other fea tures described hereinafter and the various combinations of them.
  • Figs. 1 and 2 respectively show a section and a diagrammatic elevation of an alarm clock according to the invention.
  • Fig. 3 is a view in elevation of the dome spring entering into'the construction of the clock.
  • Fig. 4 is a view in elevation of the dome spring at the commencement of the operation for mounting it upon the ratchet.
  • Fig. 5 is a View in elevation of the dome spring completely mounted upon the said ratchet.
  • the dome spring 18 (Fig. 3) is provided with a double slot 19 19 the diameter (l of 19 being smaller than the diameter (Z2 of 19 A pin 22 provided upon the barrel wheel 1 engages at the same time in the crescentshaped slot 20 so as to secure the spring 18 upon the said barrel wheel.
  • the dome spring 18 is then pushed in the direction of the arrow 23 in such a way that the narrowed portion 19 of the double slot engages in the annular groove 25 formed in the ratchet wheel; the pin 22 which slides in the crescent-shaped slot 20 does not oppose this movement.
  • the dome spring 18 thus takes up the position shown in Figs. 1 and 5; it is then completely mounted in position.
  • the dome spring 18 can be mounted and dismounted readily, as explained above; it is thus a simple matter to replace a worn spring by a new spring.
  • dome spring 18 freely ongages by means of its slot 19 in the groove 25 upon the ratchet 3, and as this spring is secured by its crescent-shaped slot 20 upon the pin 22, this dome spring 18 is not driven by the ratchet 3 when this ratchet turns in the direction of the arrow 16 with the barrel shaft 2, tensioning the main spring l when the clock is wound up.

Description

Feb. 8, 1927.; 69
F. I. BENEL' TIME TRAIN Filed March 8. 1926 Patented Feb. 8, 1927.
.UNITED STATES PATENT OFFICE.
FRANCOIS IVAN BENEL, OF IARIS, FRANCE, ASSIGNOR T GGIIIPAGNIE INDUSTRIELLE DE MECANIQUE HORLOGERE, OF PARIS, FRANCE, A LIMITED JOINT-STOCK GOM- PANY.
TIME TRAIN.
Application filed March 18, 1926, Serial No. 95,713, and in France March 27, 1925.
The object of the present invention is to reduce the friction which, in known alarm clocks, is produced between the dome spring and the barrel wheel when the alarm clock is wound up. Its object is also to facilitate the replacement of a worn dome spring by a new dome sprlng.
" An alarm clock according to the invention is characterized by the feature that the dome spring is loosely mounted upon an extended portion of the ratchet and is secured in a removable manner to the barrel wheel so that in order to wind up the clock it is possible to turn the barrel or main spring shaft without causing the dome spring to turn. This dome spring thus remains pressed upon the barrel wheel so that all friction between these two members is obviated.
The invention also comprises other fea tures described hereinafter and the various combinations of them.
A device according to the invention is illustrated by way of example in the accompanying drawing in which:
Figs. 1 and 2 respectively show a section and a diagrammatic elevation of an alarm clock according to the invention.
Fig. 3 is a view in elevation of the dome spring entering into'the construction of the clock.
Fig. 4 is a view in elevation of the dome spring at the commencement of the operation for mounting it upon the ratchet.
Fig. 5 is a View in elevation of the dome spring completely mounted upon the said ratchet.
According to the invention, the dome spring 18 (Fig. 3) is provided with a double slot 19 19 the diameter (l of 19 being smaller than the diameter (Z2 of 19 A pin 22 provided upon the barrel wheel 1 engages at the same time in the crescentshaped slot 20 so as to secure the spring 18 upon the said barrel wheel.
The dome spring 18 is then pushed in the direction of the arrow 23 in such a way that the narrowed portion 19 of the double slot engages in the annular groove 25 formed in the ratchet wheel; the pin 22 which slides in the crescent-shaped slot 20 does not oppose this movement.
The dome spring 18 thus takes up the position shown in Figs. 1 and 5; it is then completely mounted in position.
The device hereinbefore described presents numerous advantages. In the first place the dome spring 18 can be mounted and dismounted readily, as explained above; it is thus a simple matter to replace a worn spring by a new spring.
Further, as the dome spring 18 freely ongages by means of its slot 19 in the groove 25 upon the ratchet 3, and as this spring is secured by its crescent-shaped slot 20 upon the pin 22, this dome spring 18 is not driven by the ratchet 3 when this ratchet turns in the direction of the arrow 16 with the barrel shaft 2, tensioning the main spring l when the clock is wound up.
Consequently during this winding up operation any movement of the dome spring 18 relatively to the barrel wheel 4 and consequently all production of friction between these two parts is obviated. The clock is thus wound up very easily without it being necessary to exert an excessive amount of force, the barrel 4 actuating, through a pinion 8, a'centre or hour wheel 9 provided with a spring 10; this hour wheel itself con trols, through a pinion 11, a shaft 12, called the third wheel shaft upon which is mounted a third Wheel 13, these various members forming in the known manner the clockwork mechanism of the alarm clock.
What I claim is In a time train the combination of a barrel shaft, a ratchet mounted upon said shaft and provided with an extended hub portion having a groove therein, a barrel wheel mounted upon said ratchet, a pin attached to said barrel Wheel, a pawl pivoted on said pin for coacting With the ratchet, a dome spring provided with an elongated slot of varying Width for engagement With the groove in the extended portion of the ratchet, and also provided with a crescent shaped slot which is adapted to engage said pin When said dome spring is ena'aaed over the extended portion of the ratchet and slid to engage the groove, substantially as and for the purposes set forth.
In testimony whereof I afliX my signature.
FRANCOIS IVAN BENEL.
US95713A 1925-03-27 1926-03-18 Time train Expired - Lifetime US1616569A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1616569X 1925-03-27
FR249835X 1925-03-27
FR608158T 1925-03-27

Publications (1)

Publication Number Publication Date
US1616569A true US1616569A (en) 1927-02-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US95713A Expired - Lifetime US1616569A (en) 1925-03-27 1926-03-18 Time train

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US (1) US1616569A (en)
FR (1) FR608158A (en)
GB (1) GB249835A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121990A (en) * 1960-10-05 1964-02-25 Lip Sa Watch movement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121990A (en) * 1960-10-05 1964-02-25 Lip Sa Watch movement

Also Published As

Publication number Publication date
FR608158A (en) 1926-07-22
GB249835A (en) 1926-07-22

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