US3694885A - Method of manufacturing an escapement lever for a timepiece - Google Patents
Method of manufacturing an escapement lever for a timepiece Download PDFInfo
- Publication number
- US3694885A US3694885A US52093A US3694885DA US3694885A US 3694885 A US3694885 A US 3694885A US 52093 A US52093 A US 52093A US 3694885D A US3694885D A US 3694885DA US 3694885 A US3694885 A US 3694885A
- Authority
- US
- United States
- Prior art keywords
- lever
- electroless nickel
- manufacturing
- timepiece
- pallets
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 21
- 238000000151 deposition Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001096 P alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010979 ruby Substances 0.000 description 1
- 229910001750 ruby Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- G04B15/00—Escapements
- G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49579—Watch or clock making
- Y10T29/49581—Watch or clock making having arbor, pinion, or balance
Definitions
- the present invention aims at overcoming these drawbacks. It relates to a method of manufacturing an escapement lever for a timepiece, which is broadly characterized by blanking out the lever of a metal sheet, the pallets being made integral with the body of the lever, chemically depositing electroless nickel on to the whole piece, and then subjecting the lever to a finishing operation carried out so as to obtain cold rolled properties in the layer of electroless nickel, this finishingoperation determining the final dimensions of the lever, to which the pallet arbor and the safety-pin are then secured.
- the metal sheet of which the lever is blanked out may consist, for example, of brass or steel.
- the electroless nickel is deposited on the piece by chemical way, by dipping the piece into a suitable bath.
- the thickness of the coating is preferably less than 50.
- the electroless nickel is not self-lubricating, but has a low coefficient of friction and a high hardness, this representing favorable features. It must be lubricated in order that the escapement operates in a satisfactory manner.
- the completed lever may be subjected to a heat-treatment at about 800 C so as to increase the hardness of the coating of electroless nickel by precipitation of a phase.
- a method of manufacturing a timepiece escapement lever including pallets, a pallet arbor and a safetypin comprising the steps of: blanking out the lever from a metal sheet, making the pallets integral with the body of the lever, chemically depositing electroless nickel on to the whole piece, subjecting the lever to a fine blanking operation to obtain cold rolled properties in the layer of electroless nickel to determine the final dimensions of the lever, and securing the pallet arbor and the safety-pin to the lever.
- a method according to claim 1 characterized by subjecting the completed lever to a heat-treatment, in order to increase the hardness of the coating of electroless nickel.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemically Coating (AREA)
- Forging (AREA)
Abstract
A method of manufacturing an escapement lever for a timepiece, characterized by blanking out the lever of a metal sheet, the pallets being made integral with the body of the lever, depositing electroless nickel on to the whole piece and subjecting the lever to a finishing operation carried out so as to obtain cold rolled properties in the layer of chemical nickel, this finishing operation determining the final dimensions of the lever, to which the pallet arbor and the safety-pin are then secured.
Description
United States Patent 1 3,694,885 Simon-Vermot [4 1 Oct. 3, 1972 [54] METHOD OF MANUFACTURING AN 3,335,562 8/1967 Schneider ..58/122 ESCAPEMENT LEVER FOR A 3,48l,l40 12/1969 Tuetey ..29/178 X TIMEPIECE 3,51 L340 5/l970 Simon-Vermot ..58/121 A [72] inventor: Andre Simon-Vermot, be Locle, Primary Examiner ]ohn R Campbell Swtzefland Assistant Examiner-Victor A. Di Palma 731 Assignee: Les Fabriques d'Assortiments Reu- Alwmeylmirle & Smiley nies Legbocle, Neuchatel, Switzerland 57 ABSTRACT [22] Filed: Ju|y 2, 1970 A method of manufacturing an escapement lever for a timepiece, characterized by blanking out the lever of a PP N 2,093 metal sheet, the pallets being made integral with the body of the lever, depositing electroless nickel on to the whole piece and subjecting the lever to a finishing [30] Foreign Apphcmon Pnomy Data operation carried out so as to obtain cold rolled proy 1969 z rl n --l 7/ 9 perties in the layer of chemical nickel, this finishing operation determining the final dimensions of the [52] US. Cl. ..29/177, 58/ 121 R lever, to which the pallet arbor and the safety-pin are [51] Int. Cl. ..B23p 13/00 then secured. [58] Field of Search...29/l77; 58/l 16, 121 A, 121 R, 58/122 [56] References Cited 4 Claims, No Drawings UNITED STATES PATENTS 6/1895 Hart .'...29/l78 METHOD OF MANUFACTURING AN ESCAPEMENT LEVER FOR A TIMEPIECE escapement in a satisfactory manner. Tests have shown that better results can be obtained in this respect by replacing the ruby of the pallets by a body consisting of so-called electroless nickel, the composition of which is, in fact, an alloy of nickel and phosphorus con taining 3.5 to l 1.5 percent of phosphorus, the rest being formed by nickel.
Obtaining this alloy by chemical way is relatively long and machining the same to obtain pallets is rather delicate.
The present invention aims at overcoming these drawbacks. It relates to a method of manufacturing an escapement lever for a timepiece, which is broadly characterized by blanking out the lever of a metal sheet, the pallets being made integral with the body of the lever, chemically depositing electroless nickel on to the whole piece, and then subjecting the lever to a finishing operation carried out so as to obtain cold rolled properties in the layer of electroless nickel, this finishingoperation determining the final dimensions of the lever, to which the pallet arbor and the safety-pin are then secured.
The metal sheet of which the lever is blanked out may consist, for example, of brass or steel.
The electroless nickel is deposited on the piece by chemical way, by dipping the piece into a suitable bath. The thickness of the coating is preferably less than 50 The rolling or laminating effect obtained by the finishing operationv guarantees a better adhesion of the coating.
The electroless nickel is not self-lubricating, but has a low coefficient of friction and a high hardness, this representing favorable features. It must be lubricated in order that the escapement operates in a satisfactory manner.
Possibly, the completed lever may be subjected to a heat-treatment at about 800 C so as to increase the hardness of the coating of electroless nickel by precipitation of a phase.
The manufacture of the lever described is inexpensive and the thus obtained lever guarantees a reliable operation and a long working life of the escape ment.
What I claim is:
l. A method of manufacturing a timepiece escapement lever including pallets, a pallet arbor and a safetypin, comprising the steps of: blanking out the lever from a metal sheet, making the pallets integral with the body of the lever, chemically depositing electroless nickel on to the whole piece, subjecting the lever to a fine blanking operation to obtain cold rolled properties in the layer of electroless nickel to determine the final dimensions of the lever, and securing the pallet arbor and the safety-pin to the lever.
2. A method according to claim 1, characterized by depositing the electroless nickel by dipping the piece into a suitable bath.
. A method according to claim 1, characterized in that the thickness of the coating of electroless nickel is less than 50 p..
4. A method according to claim 1, characterized by subjecting the completed lever to a heat-treatment, in order to increase the hardness of the coating of electroless nickel.
easy and
Claims (4)
1. A method of manufacturing a timepiece escapement lever including pallets, a pallet arbor and a safety-pin, comprising the steps of: blanking out the lever from a metal sheet, making the pallets integral with the body of the lever, chemically depositing electroless nickel on to the whole piece, subjecting the lever to a fine blanking operation to obtain cold rolled properties in the layer of electroless nickel to determine the final dimensions of the lever, and securing the pallet arbor and the safety-pin to the lever.
2. A method according to claim 1, characterized by depositing the electroless nickel by dipping the piece into a suitable bath.
3. A method according to claim 1, characterized in that the thickness of the coating of electroless nickel is less than 50 Mu .
4. A method according to claim 1, characterized by subjecting the completed lever to a heat-treatment, in order to increase the hardness of the coating of electroless nickel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1060769A CH514873A (en) | 1969-07-11 | 1969-07-11 | Manufacturing process of a watch anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3694885A true US3694885A (en) | 1972-10-03 |
Family
ID=4364996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US52093A Expired - Lifetime US3694885A (en) | 1969-07-11 | 1970-07-02 | Method of manufacturing an escapement lever for a timepiece |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3694885A (en) |
| CH (2) | CH1060769A4 (en) |
| DE (1) | DE2032622B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122665A (en) * | 1975-08-05 | 1978-10-31 | Eta A.G. Ebauches-Fabrik | Method of manufacturing a pallet lever and pallet lever made by this method |
| US11092932B2 (en) | 2016-07-19 | 2021-08-17 | Nivarox-Far S.A. | Component for a timepiece movement |
| CN116075781A (en) * | 2020-09-15 | 2023-05-05 | Eta瑞士钟表制造股份有限公司 | Method for producing a surface-optimized micromechanical component, in particular a timepiece wheel |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3273306A1 (en) * | 2016-07-19 | 2018-01-24 | Nivarox-FAR S.A. | Part for clock movement |
| EP3968096A1 (en) * | 2020-09-15 | 2022-03-16 | ETA SA Manufacture Horlogère Suisse | Micromechanical component, in particular a timepiece mobile, in particular an escapement mobile, with optimised contact surface |
| EP4075205A1 (en) * | 2021-04-16 | 2022-10-19 | ETA SA Manufacture Horlogère Suisse | Method for manufacturing a timepiece mobile and timepiece mobile obtained by implementing same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US540546A (en) * | 1895-06-04 | George e | ||
| US3335562A (en) * | 1965-03-03 | 1967-08-15 | Tissot Horlogerie | Anchor escapement for timepieces |
| US3481140A (en) * | 1966-04-14 | 1969-12-02 | Far Fab Assortiments Reunies | Escapement lever for a timepiece |
| US3511340A (en) * | 1967-12-09 | 1970-05-12 | Far Fab Assortiments Reunies | Method of lubricating a timepiece movement |
-
1969
- 1969-07-11 CH CH1060769D patent/CH1060769A4/xx unknown
- 1969-07-11 CH CH1060769A patent/CH514873A/en not_active IP Right Cessation
-
1970
- 1970-07-01 DE DE19702032622 patent/DE2032622B2/en not_active Withdrawn
- 1970-07-02 US US52093A patent/US3694885A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US540546A (en) * | 1895-06-04 | George e | ||
| US3335562A (en) * | 1965-03-03 | 1967-08-15 | Tissot Horlogerie | Anchor escapement for timepieces |
| US3481140A (en) * | 1966-04-14 | 1969-12-02 | Far Fab Assortiments Reunies | Escapement lever for a timepiece |
| US3511340A (en) * | 1967-12-09 | 1970-05-12 | Far Fab Assortiments Reunies | Method of lubricating a timepiece movement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122665A (en) * | 1975-08-05 | 1978-10-31 | Eta A.G. Ebauches-Fabrik | Method of manufacturing a pallet lever and pallet lever made by this method |
| US11092932B2 (en) | 2016-07-19 | 2021-08-17 | Nivarox-Far S.A. | Component for a timepiece movement |
| CN116075781A (en) * | 2020-09-15 | 2023-05-05 | Eta瑞士钟表制造股份有限公司 | Method for producing a surface-optimized micromechanical component, in particular a timepiece wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2032622B2 (en) | 1972-02-10 |
| CH514873A (en) | 1971-07-15 |
| DE2032622A1 (en) | 1971-01-28 |
| CH1060769A4 (en) | 1971-07-15 |
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