File:Pocketwatch movement.png
Summary
Drawing of an antique <a href="https://en.wikipedia.org/wiki/pocket_watch" class="extiw" title="wikipedia:pocket watch">pocket watch</a> movement, from an 1891 encyclopedia. This type of movement, with a <a href="https://en.wikipedia.org/wiki/verge_escapement" class="extiw" title="wikipedia:verge escapement">verge escapement</a> and a <a href="https://en.wikipedia.org/wiki/fusee_(horology)" class="extiw" title="wikipedia:fusee (horology)">fusee</a> was used in watches from around 1600 to the early 1800s. Labelled parts, from accompanying text: (a) mainspring barrel, (b) fusee, (c) center (hour) wheel, (c') center wheel pinion, (d) third wheel, (e) fourth or contrate wheel, (f) crown wheel, (h) balance wheel (the pallets are also labelled h), (i) minute hand, (j) hour hand, (k,l) cannon pinion, (m) minute wheel pinion, (n) minute wheel, (v) verge. Alterations to image: removed figure number, and converted to 32 greyscale PNG.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:12, 6 January 2017 | | 784 × 257 (31 KB) | 127.0.0.1 (talk) | Drawing of an antique <a href="https://en.wikipedia.org/wiki/pocket_watch" class="extiw" title="wikipedia:pocket watch">pocket watch</a> movement, from an 1891 encyclopedia. This type of movement, with a <a href="https://en.wikipedia.org/wiki/verge_escapement" class="extiw" title="wikipedia:verge escapement">verge escapement</a> and a <a href="https://en.wikipedia.org/wiki/fusee_(horology)" class="extiw" title="wikipedia:fusee (horology)">fusee</a> was used in watches from around 1600 to the early 1800s. Labelled parts, from accompanying text: <i>(a)</i> mainspring barrel, <i>(b)</i> fusee, <i>(c)</i> center (hour) wheel, <i>(c')</i> center wheel pinion, <i>(d)</i> third wheel, <i>(e)</i> fourth or contrate wheel, <i>(f)</i> crown wheel, <i>(h)</i> balance wheel (the pallets are also labelled <i>h</i>), <i>(i)</i> minute hand, <i>(j)</i> hour hand, <i>(k,l)</i> cannon pinion, <i>(m)</i> minute wheel pinion, <i>(n)</i> minute wheel, <i>(v)</i> verge. Alterations to image: removed figure number, and converted to 32 greyscale PNG. |
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