File:Balance spring types.png
![File:Balance spring types.png](https://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Balance_spring_types.png/800px-Balance_spring_types.png?20071205155932)
Original file (1,540 × 313 pixels, file size: 27 KB, MIME type: image/png)
Captions
Captions
Summary
[edit]DescriptionBalance spring types.png |
English: Drawings of different types of watch and chronometer balance springs. Types: (1) flat spiral, including central collet and end stud, (2) Breguet overcoil, (3) chronometer helix, with axial view showing Breguet end curves, (4) early forms. The early springs are from Nelthropp, others are from Britten. Alterations: combined source images into a composite, removed captions and part labels, scaled and rotated Nelthropp image to match others, added new labels in color, converted to PNG. |
Date | and 1898 |
Source | downloaded from Britten, Frederick J. (1898) On the Springing and Adjusting of Watches, Spon & Chamberlain, p.6-7, figs.2,3,4 and Nelthropp, Harry L.(1873) A Treatise on Watch-work, Past and Present, E.& F.N. Spon, London, p.187, fig.19 on Google Books |
Author | Frederick J. Britten and Harry L. Nelthropp |
Permission (Reusing this file) |
Public domain - Britten died in 1913 |
Licensing
[edit]Public domainPublic domainfalsefalse |
![]() |
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.
|
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 15:59, 5 December 2007 | ![]() | 1,540 × 313 (27 KB) | Chetvorno (talk | contribs) | {{Information |Description=Drawings of different types of watch and clock balance springs. Types: (1)flat spiral, with central collet and end stud, (2)Breguet overcoil, (3)chronometer helix, with axial view showing Breguet end curves, (4)early forms. Th |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on de.wikipedia.org
- Usage on en.wikipedia.org
- Usage on es.wikipedia.org
- Usage on id.wikipedia.org
- Usage on ur.wikipedia.org