CA1217062A - Leather wrist-watch strap with folding clasp - Google Patents
Leather wrist-watch strap with folding claspInfo
- Publication number
- CA1217062A CA1217062A CA000446239A CA446239A CA1217062A CA 1217062 A CA1217062 A CA 1217062A CA 000446239 A CA000446239 A CA 000446239A CA 446239 A CA446239 A CA 446239A CA 1217062 A CA1217062 A CA 1217062A
- Authority
- CA
- Canada
- Prior art keywords
- clasp
- strap
- leather
- watch
- wrist
- 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
Links
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
- G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
- G04B37/1486—Arrangements for fixing to a bracelet
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/0053—Flexible straps
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/18—Fasteners for straps, chains or the like
- A44C5/22—Fasteners for straps, chains or the like for closed straps
- A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Abstract
Jean LASSALE S.A. GENEVA /Switzerland "LEATHER-WRIST-WATCH STRAP WITH FOLDING CLASP"
ABSTRACT OF THE DISCLOSURE
This leather wrist-watch strap with folding clasp is of the type forming a closed loop when the clasp is open. The leather strap has embedded therein a reinforcing member consisting of two flexible blades of metal or syn-thetic material, one end of these blades being rigidly connected to the watch case while the other end is hinge-dly connected to the clasp. This reinforcing member not only improves the rigidity of the leather strap but also keeps the strap open when the clasp is open while imparting a harmonious curvature to the strap.
ABSTRACT OF THE DISCLOSURE
This leather wrist-watch strap with folding clasp is of the type forming a closed loop when the clasp is open. The leather strap has embedded therein a reinforcing member consisting of two flexible blades of metal or syn-thetic material, one end of these blades being rigidly connected to the watch case while the other end is hinge-dly connected to the clasp. This reinforcing member not only improves the rigidity of the leather strap but also keeps the strap open when the clasp is open while imparting a harmonious curvature to the strap.
Description
~ 7~
The presen~ invention relates to leather wrist-watch straps and has specific reference to a leather wrist-watch strap provided with a folding clasp adapted to consti-tute a closed loop in the open clasp ~ondition.
This type of wrist-watch strap is widely known. It comprises a folding clasp made of two or three sections and sometimes referred to as a wallet-type clasp, or clasp with unfolding buckle. Generally, the leather strap is at-tached to the watch case proper by means of a cross pin.
When worn on the user's wrist, these wrist-watch straps form a more or less pronounced and in any case una-esthetic angle with the watch proper. Moreover, it is some-times uneasy to thrust one's hand through the wrist-watch strap for fixing it to the wrist because the loop formed by the wrist-watch strap when the clasp is open is frequently prone to reclose itself inopportunely.
Finally, the strength and thickness of the wrist-watch strap must be sufficient to withstand the tractive effort exerted thereon when closing the clasp on the wrist.
This effort tends on the other hand to straighten the leather strap sections between the watch and the clasp.
It is the primary object of the present invention to avoid the inconveniences set forth hereinabove by providing a leather wrist-watch strap characterized by the fact that the leather strap has embedded therein a reinforcing member or core consisting of a pair of flexible blades having one end rigidly connected to the watch and the other end pivo-tally or hingedly connected to the clasp.
This flexible reinforcing member or core rigidly connected to`the watch case provides at the same time the necessary resistance to the tractive effort exerted by the strap, keeps the loop formed by t~e ~rist-watch strap in its open position when the clasp is open and imparts a har-monius curvature to the leat~er strap sections) without any
The presen~ invention relates to leather wrist-watch straps and has specific reference to a leather wrist-watch strap provided with a folding clasp adapted to consti-tute a closed loop in the open clasp ~ondition.
This type of wrist-watch strap is widely known. It comprises a folding clasp made of two or three sections and sometimes referred to as a wallet-type clasp, or clasp with unfolding buckle. Generally, the leather strap is at-tached to the watch case proper by means of a cross pin.
When worn on the user's wrist, these wrist-watch straps form a more or less pronounced and in any case una-esthetic angle with the watch proper. Moreover, it is some-times uneasy to thrust one's hand through the wrist-watch strap for fixing it to the wrist because the loop formed by the wrist-watch strap when the clasp is open is frequently prone to reclose itself inopportunely.
Finally, the strength and thickness of the wrist-watch strap must be sufficient to withstand the tractive effort exerted thereon when closing the clasp on the wrist.
This effort tends on the other hand to straighten the leather strap sections between the watch and the clasp.
It is the primary object of the present invention to avoid the inconveniences set forth hereinabove by providing a leather wrist-watch strap characterized by the fact that the leather strap has embedded therein a reinforcing member or core consisting of a pair of flexible blades having one end rigidly connected to the watch and the other end pivo-tally or hingedly connected to the clasp.
This flexible reinforcing member or core rigidly connected to`the watch case provides at the same time the necessary resistance to the tractive effort exerted by the strap, keeps the loop formed by t~e ~rist-watch strap in its open position when the clasp is open and imparts a har-monius curvature to the leat~er strap sections) without any
- 2 - ~r~
01 elbow or step at the junction between the watch case 02 and the strap sections. This reinforcing member is 03 preferably very thin and flexible so that it wlll not 04 inter~ere appreciably with the clasp closing action.
05 Considering this very ~oderate thickness of the 06 flexible reinforcing member, ~he thickness of the 07 wrist-watch strap is not increased unduly as one could 08 expect, on the contrary, the strength of the flexible 09 core or reinforcing member permits use of very thin leather straps so that the final thickness of the 11 wrist-watch strap is less than that of a conventional 12 leather wrist strap. Therefore, a stronger 13 wrist-watch strap having a lighter ana smarter aspect 14 can be obtained.
According to the present invention, there 16 is provided a leather wrist-watch strap in abutting 17 contact with a watch case and including a folding 18 clasp which forms a closed loop in the open position 19 of the clasp, wherein the leather strap has embedded therein a reinforcing member consisting of a pair of 21 flexible blades having one end each embedded within 22 respective slots of the watch case for urging the 23 strap to -the open position while imparting a 24 harmonious curvature thereto, and the other end is hingedly connected to the clasp.
26 According to a preferred embodiment, there 27 is provided the combination of a wrist-watch with a 28 wrist-watch strap and clasp, comprising a wrist-watch 29 case having slots in opposite sides thereof, a hinged closure clasp having opposite ends, a first leather 31 strap having a first thin flexible metal reinforcing 32 blade embedded therein and having an end portion 33 extending beyond a first end of the first leather 34 strap, the extending end portion of the first metal blade only being secured in a first one of the slots 36 of the watch case and the first end of the first 37 leather strap abutting the case, the opposite end of ;~
7~
01 the first strap being hingedly connected with a first 02 end of the closure clasp. A second leather strap is 03 included having a second flexible metal reinforcing 04 blade embedded therein and having an end portion 05 extending beyond a first end of the second leather 06 strap, and the extending end portion of the second 07 metal blade only being secured in a second one of the 08 slots of the watch case and the first end of the 09 second leather strap abutting the case, the opposite end of the second strap being hingedly connected with 11 a second end of the closure clasp, the leather straps 12 together with the watch case and clasp constituting a 13 closed loop in open position of the clasp.
14 In the drawings:
Fig. 1 illustrates by way of example a 16 typical form of embodiment of the wrist-watch strap 17 according to the present invention;
18 Fig. 2 is a plane view from above showing 19 the flexible core or reinforcing member incorporated in the wrist-watch strap' 21 Fig. 3 is a part sectional and lateral 22 view of a detail showing the connection between the 23 strap and the watch case, and 24 Fig. 4 is a sectional view showing the connection between the strap and the clasp.
26 The core or flexible reinforcing member of 27 the wrist-watch strap consists of a pair of blades 1, 28 2 of beryllium bronze having each a thickness of the 29 order of 0.15 mm. At one of their ends the blades are fitted and welded in a metal ring 3, for example of 31 brass, forming an integral part of the watch case 32 (Fig. 3)~ The other ends o-f blades 1 and 2 are in 33 fact a common end bent to a cylindrical configuration 34 constituting a tubular element 4 suitable for hingedly connecting the wrist-watch strap to the clasp 5. The 36 resilient blades 1 and 2 are embedded in the leather 37 strap 6, which is 38 - 3a , 7~6~
cemented to the blades 1 and 2.
The clasp 5 is of the unfo~ding buckle or double-wallet type and comprises a central sectïon 7 having hinge-dly connected to its ends a pair of arms 8 and 9 adapted to be folded on and locked to the central section 7. The hinged connections between the wrist-watch strap and the clasp are concealed by a cover plate 10.
As consequence of the embedding and resiliency of the metal blades 1 and 2, the wrist-watch strap, in its open position, tends to remain in, or return to, its unfolded position shown in Fig.1. In the fully released position the blades 1 and 2 may have a more or less pronounced initial curvature so that the resilient force available is just sufficient for maintaining the strap in its unfolded position as shown in Fig.1, without exerting however an unduly high pxessure on the clasp nor undergo~ng an excessive stress in its embedded condition. This natural expansion of the strap facilitates the proper positioning of the wrist-watch strap on the wearer's wrist, and also its removal therefrom. ~ur-thermore, the resilient core 1,2 makes the leather strap well-fitting and imparts a harmonious curvature thereto.
Of course, many modifications and changes may be brought to the specific form of embodiment of the inven~ion shown and described herein without departing from the basic principles~f the invention, as will readily occur to those conversant with the art. Thus, for example, the metal blades may consist of a different metal, such as steel, and be rigidly secured i~ a different manner to the watch case, notably to a square case, for example by means of screws, and the tubular element 4 could constitute an insert.
The flexible blades may also consist of non-metallic material such as Nylon (Registered Trade Mark) or other synthetic material~ A blade of synthetic material is advanta-geous in that it can be molded and has a better adherence to the leather strap, when the two materials are bonded by cementing.
. ~
01 elbow or step at the junction between the watch case 02 and the strap sections. This reinforcing member is 03 preferably very thin and flexible so that it wlll not 04 inter~ere appreciably with the clasp closing action.
05 Considering this very ~oderate thickness of the 06 flexible reinforcing member, ~he thickness of the 07 wrist-watch strap is not increased unduly as one could 08 expect, on the contrary, the strength of the flexible 09 core or reinforcing member permits use of very thin leather straps so that the final thickness of the 11 wrist-watch strap is less than that of a conventional 12 leather wrist strap. Therefore, a stronger 13 wrist-watch strap having a lighter ana smarter aspect 14 can be obtained.
According to the present invention, there 16 is provided a leather wrist-watch strap in abutting 17 contact with a watch case and including a folding 18 clasp which forms a closed loop in the open position 19 of the clasp, wherein the leather strap has embedded therein a reinforcing member consisting of a pair of 21 flexible blades having one end each embedded within 22 respective slots of the watch case for urging the 23 strap to -the open position while imparting a 24 harmonious curvature thereto, and the other end is hingedly connected to the clasp.
26 According to a preferred embodiment, there 27 is provided the combination of a wrist-watch with a 28 wrist-watch strap and clasp, comprising a wrist-watch 29 case having slots in opposite sides thereof, a hinged closure clasp having opposite ends, a first leather 31 strap having a first thin flexible metal reinforcing 32 blade embedded therein and having an end portion 33 extending beyond a first end of the first leather 34 strap, the extending end portion of the first metal blade only being secured in a first one of the slots 36 of the watch case and the first end of the first 37 leather strap abutting the case, the opposite end of ;~
7~
01 the first strap being hingedly connected with a first 02 end of the closure clasp. A second leather strap is 03 included having a second flexible metal reinforcing 04 blade embedded therein and having an end portion 05 extending beyond a first end of the second leather 06 strap, and the extending end portion of the second 07 metal blade only being secured in a second one of the 08 slots of the watch case and the first end of the 09 second leather strap abutting the case, the opposite end of the second strap being hingedly connected with 11 a second end of the closure clasp, the leather straps 12 together with the watch case and clasp constituting a 13 closed loop in open position of the clasp.
14 In the drawings:
Fig. 1 illustrates by way of example a 16 typical form of embodiment of the wrist-watch strap 17 according to the present invention;
18 Fig. 2 is a plane view from above showing 19 the flexible core or reinforcing member incorporated in the wrist-watch strap' 21 Fig. 3 is a part sectional and lateral 22 view of a detail showing the connection between the 23 strap and the watch case, and 24 Fig. 4 is a sectional view showing the connection between the strap and the clasp.
26 The core or flexible reinforcing member of 27 the wrist-watch strap consists of a pair of blades 1, 28 2 of beryllium bronze having each a thickness of the 29 order of 0.15 mm. At one of their ends the blades are fitted and welded in a metal ring 3, for example of 31 brass, forming an integral part of the watch case 32 (Fig. 3)~ The other ends o-f blades 1 and 2 are in 33 fact a common end bent to a cylindrical configuration 34 constituting a tubular element 4 suitable for hingedly connecting the wrist-watch strap to the clasp 5. The 36 resilient blades 1 and 2 are embedded in the leather 37 strap 6, which is 38 - 3a , 7~6~
cemented to the blades 1 and 2.
The clasp 5 is of the unfo~ding buckle or double-wallet type and comprises a central sectïon 7 having hinge-dly connected to its ends a pair of arms 8 and 9 adapted to be folded on and locked to the central section 7. The hinged connections between the wrist-watch strap and the clasp are concealed by a cover plate 10.
As consequence of the embedding and resiliency of the metal blades 1 and 2, the wrist-watch strap, in its open position, tends to remain in, or return to, its unfolded position shown in Fig.1. In the fully released position the blades 1 and 2 may have a more or less pronounced initial curvature so that the resilient force available is just sufficient for maintaining the strap in its unfolded position as shown in Fig.1, without exerting however an unduly high pxessure on the clasp nor undergo~ng an excessive stress in its embedded condition. This natural expansion of the strap facilitates the proper positioning of the wrist-watch strap on the wearer's wrist, and also its removal therefrom. ~ur-thermore, the resilient core 1,2 makes the leather strap well-fitting and imparts a harmonious curvature thereto.
Of course, many modifications and changes may be brought to the specific form of embodiment of the inven~ion shown and described herein without departing from the basic principles~f the invention, as will readily occur to those conversant with the art. Thus, for example, the metal blades may consist of a different metal, such as steel, and be rigidly secured i~ a different manner to the watch case, notably to a square case, for example by means of screws, and the tubular element 4 could constitute an insert.
The flexible blades may also consist of non-metallic material such as Nylon (Registered Trade Mark) or other synthetic material~ A blade of synthetic material is advanta-geous in that it can be molded and has a better adherence to the leather strap, when the two materials are bonded by cementing.
. ~
Claims (11)
1. A leather wrist-watch strap in abutting contact with a watch case and including a folding clasp which forms a closed loop in the open position of said clasp, wherein the leather strap has embedded therein a reinforcing member consisting of a pair of flexible blades having one end each embedded within respective slots of the watch case for urging said strap to said open position while imparting a harmonious curvature thereto, and the other end is hingedly connected to said clasp.
2. A leather wrist-watch strap of claim 1, wherein said blades are embedded and welded in a ring surrounding said watch case.
3. The leather wrist-watch strap of claim 1, wherein the ends of said blades which are hingedly connected to said clasp are bent back to constitute a tubular hinge member.
4. The combination of a wrist-watch with a wrist-watch strap and clasp comprising:
a wrist-watch case having slots in opposite sides thereof, a hinged closure clasp having opposite ends, a first leather strap having a first thin flexible metal reinforcing blade embedded therein and having an end portion extending beyond a first end of said first leather strap, said extending end portion of said first metal blade only being secured in a first one of said slots of said watch case and said first end of said first leather strap abutting said case, the opposite end of said first strap being hingedly connected with a first end of said closure clasp, and a second leather strap having a second flexible metal reinforcing blade embedded therein and having an end portion extending beyond a first end of said second leather strap, and said extending end portion of said second metal blade only being secured in a second one of said slots of said watch case and said first end of said second leather strap abutting said case, the opposite end of said second strap being hingedly connected with a second end of said closure clasp, said leather straps together with said watch case and clasp constituting a closed loop in open position of said clasp.
a wrist-watch case having slots in opposite sides thereof, a hinged closure clasp having opposite ends, a first leather strap having a first thin flexible metal reinforcing blade embedded therein and having an end portion extending beyond a first end of said first leather strap, said extending end portion of said first metal blade only being secured in a first one of said slots of said watch case and said first end of said first leather strap abutting said case, the opposite end of said first strap being hingedly connected with a first end of said closure clasp, and a second leather strap having a second flexible metal reinforcing blade embedded therein and having an end portion extending beyond a first end of said second leather strap, and said extending end portion of said second metal blade only being secured in a second one of said slots of said watch case and said first end of said second leather strap abutting said case, the opposite end of said second strap being hingedly connected with a second end of said closure clasp, said leather straps together with said watch case and clasp constituting a closed loop in open position of said clasp.
5. The combination defined in claim 4, in which said end portions of said metal blades are secured in said slots in said watch case by welding.
6. The combination defined in claim 4, in which said metal blades are of beryllium bronze.
7. The combination defined in claim 6, in which the thickness of said metal blades is of the order of 0.15 mm.
8. The combination defined in claim 4, in which each of said leather straps is split longitudinally into two parts which are adhesively bonded to opposite sides of the respective metal flexible reinforcing blade.
9. The combination according to claim 4, in which said metal blades extend beyond said opposite ends of respective leather straps and have end portions bent back to form loops which are hingedly connected, respectively, with opposite ends of said clasp.
10. The combination defined in claim 4, in which said clasp comprises a pair of arms hingedly connected with and foldable on a central section, and a cover plate which conceals hinged connections between the wrist-watch strap and the clasp when the clasp is closed.
11. The combination according to claim 10, in which when said clasp is closed, said opposite ends of said leather strap are contiguous with said cover plate of said clasp.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH48483A CH650891GA3 (en) | 1983-01-28 | 1983-01-28 | |
| CH484/83-8 | 1983-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1217062A true CA1217062A (en) | 1987-01-27 |
Family
ID=4188061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000446239A Expired CA1217062A (en) | 1983-01-28 | 1984-01-27 | Leather wrist-watch strap with folding clasp |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0116384B1 (en) |
| JP (1) | JPS59144405A (en) |
| AU (1) | AU2380184A (en) |
| CA (1) | CA1217062A (en) |
| CH (1) | CH650891GA3 (en) |
| DE (1) | DE3461679D1 (en) |
| ES (1) | ES277148Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9516928B2 (en) | 2011-04-06 | 2016-12-13 | Rolex Sa | Watch strap strip |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3832614C1 (en) * | 1988-09-26 | 1989-11-16 | Iwc International Watch Co. Ag, Schaffhausen, Ch | |
| DE1240841T1 (en) * | 2001-03-12 | 2003-05-28 | Conseils Et Manufacture Vlg S | Folding clasp for interchangeable bracelet |
| FR2891999B1 (en) * | 2005-10-18 | 2007-12-21 | Jean Christophe Mignard | HOLDING OR CLAMPING DEVICE |
| WO2021257517A1 (en) | 2020-06-16 | 2021-12-23 | Tom Ford International, Llc | Single-piece watch band |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2036648A (en) * | 1931-08-14 | 1936-04-07 | Schwalberg Abraham | Wrist watch strap |
| CH453777A (en) * | 1967-11-24 | 1968-03-31 | Lumorex Luescher Moret & Co | Process for manufacturing a watch strap and watch strap obtained by this process |
| CH518696A (en) * | 1969-11-13 | 1972-02-15 | Paolini Jean | Watch strap |
-
1983
- 1983-01-28 CH CH48483A patent/CH650891GA3/fr unknown
-
1984
- 1984-01-23 EP EP84200077A patent/EP0116384B1/en not_active Expired
- 1984-01-23 DE DE8484200077T patent/DE3461679D1/en not_active Expired
- 1984-01-26 AU AU23801/84A patent/AU2380184A/en not_active Abandoned
- 1984-01-27 ES ES1984277148U patent/ES277148Y/en not_active Expired
- 1984-01-27 JP JP59012160A patent/JPS59144405A/en active Pending
- 1984-01-27 CA CA000446239A patent/CA1217062A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9516928B2 (en) | 2011-04-06 | 2016-12-13 | Rolex Sa | Watch strap strip |
Also Published As
| Publication number | Publication date |
|---|---|
| ES277148Y (en) | 1985-05-01 |
| JPS59144405A (en) | 1984-08-18 |
| EP0116384B1 (en) | 1986-12-10 |
| DE3461679D1 (en) | 1987-01-22 |
| AU2380184A (en) | 1984-08-02 |
| EP0116384A1 (en) | 1984-08-22 |
| ES277148U (en) | 1984-10-16 |
| CH650891GA3 (en) | 1985-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |