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Whitworth Quick Return Mechanism - Revision history
2024-03-29T15:40:18Z
Revision history for this page on the wiki
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http://wiki.dtonline.org/index.php?title=Whitworth_Quick_Return_Mechanism&diff=10764&oldid=prev
DT Online at 13:17, 4 November 2018
2018-11-04T13:17:38Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:17, 4 November 2018</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The [https://en.wikipedia.org/wiki/Quick_return_mechanism '''Whitworth Quick Return Mechanism'''] changes rotary to '''[[Types of Motion|Oscillating Motion]]''' but, unlike the '''[[Crank and Slider]]''', the forward reciprocating motion is at a different rate to the backward stroke.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The [https://en.wikipedia.org/wiki/Quick_return_mechanism '''Whitworth Quick Return Mechanism'''] changes rotary to '''[[Types of Motion|Oscillating Motion]]''' but, unlike the '''[[Crank and Slider]]''', the forward reciprocating motion is at a different rate to the backward stroke.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">As can be seen in the animation opposite, the red linking pin has to travel a much greater distance around the top of the crank circle than the bottom during a full right to left stroke cycle. Since the crank is rotating with constant angular velocity the result is a left to right return motion being much quicker than the right to left forward stroke.</ins></div></td></tr>
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DT Online
http://wiki.dtonline.org/index.php?title=Whitworth_Quick_Return_Mechanism&diff=9096&oldid=prev
DT Online at 08:46, 14 March 2017
2017-03-14T08:46:31Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 08:46, 14 March 2017</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=====Features and Applications=====</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=====Features and Applications=====</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>At the bottom of the slotted arm, the peg only has to move through a few degrees to sweep the arm from left to right, but it takes the remainder of the revolution to bring the arm back. This mechanism is most commonly seen as the drive for a [https://en.wikipedia.org/wiki/Shaper '''Shaping Machine'''].</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>At the bottom of the slotted arm, the peg only has to move through a few degrees to sweep the arm from left to right, but it takes the remainder of the revolution<ins style="font-weight: bold; text-decoration: none;">, and consequently more time, </ins>to bring the arm back. This mechanism is most commonly seen as the drive for a [https://en.wikipedia.org/wiki/Shaper '''Shaping Machine'''].</div></td></tr>
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DT Online
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DT Online at 11:31, 18 February 2017
2017-02-18T11:31:23Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is also a type of '''Coulisse Mechanism''' in reference to the slotted crank ''(i.e. as in [https://en.wikipedia.org/wiki/Portcullis '''Portcullis'''] from the French ‘porte coulissante’ '<del style="font-weight: bold; text-decoration: none;">'(i.e. </del>sliding door<del style="font-weight: bold; text-decoration: none;">)'</del>' and derived from the Old French ‘Coulisse’ referring to a timber member grooved to take a sliding panel)''</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is also a type of '''Coulisse Mechanism''' in reference to the slotted crank ''(i.e. as in [https://en.wikipedia.org/wiki/Portcullis '''Portcullis'''] from the French ‘porte coulissante’<ins style="font-weight: bold; text-decoration: none;">, or </ins>'sliding door'<ins style="font-weight: bold; text-decoration: none;">, </ins>and derived from the Old French ‘Coulisse’ referring to a timber member grooved to take a sliding panel)''</div></td></tr>
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DT Online
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DT Online at 11:29, 18 February 2017
2017-02-18T11:29:07Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is also a type of '''Coulisse Mechanism''' in reference to the slotted crank ''(i.e. as in [https://en.wikipedia.org/wiki/Portcullis '''Portcullis'''] from the French ‘porte coulissante’ and derived from the Old French ‘Coulisse’ referring to a timber member grooved to take a sliding panel)''</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is also a type of '''Coulisse Mechanism''' in reference to the slotted crank ''(i.e. as in [https://en.wikipedia.org/wiki/Portcullis '''Portcullis'''] from the French ‘porte coulissante’ <ins style="font-weight: bold; text-decoration: none;">''(i.e. sliding door)'' </ins>and derived from the Old French ‘Coulisse’ referring to a timber member grooved to take a sliding panel)''</div></td></tr>
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DT Online
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DT Online at 19:39, 1 December 2016
2016-12-01T19:39:02Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=====Description=====</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=====Description=====</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The [https://en.wikipedia.org/wiki/Quick_return_mechanism '''Whitworth Quick Return Mechanism'''] <del style="font-weight: bold; text-decoration: none;">mechanism </del>changes rotary to <del style="font-weight: bold; text-decoration: none;">oscillating motion </del> but, unlike the '''[[Crank and Slider]]''', the forward reciprocating motion is at a different rate to the backward stroke.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The [https://en.wikipedia.org/wiki/Quick_return_mechanism '''Whitworth Quick Return Mechanism'''] changes rotary to <ins style="font-weight: bold; text-decoration: none;">'''[[Types of Motion|Oscillating Motion]]''' </ins> but, unlike the '''[[Crank and Slider]]''', the forward reciprocating motion is at a different rate to the backward stroke.</div></td></tr>
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DT Online
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DT Online at 19:22, 1 December 2016
2016-12-01T19:22:40Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is also <del style="font-weight: bold; text-decoration: none;">known as </del>a '''Coulisse Mechanism''' in reference to the slotted crank ''(i.e. as in [https://en.wikipedia.org/wiki/Portcullis '''Portcullis'''] from the French ‘porte coulissante’ and derived from the Old French ‘Coulisse’ referring to a timber member grooved to take a sliding panel)''</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is also a <ins style="font-weight: bold; text-decoration: none;">type of </ins>'''Coulisse Mechanism''' in reference to the slotted crank ''(i.e. as in [https://en.wikipedia.org/wiki/Portcullis '''Portcullis'''] from the French ‘porte coulissante’ and derived from the Old French ‘Coulisse’ referring to a timber member grooved to take a sliding panel)''</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>
DT Online
http://wiki.dtonline.org/index.php?title=Whitworth_Quick_Return_Mechanism&diff=8715&oldid=prev
DT Online: Created article
2016-12-01T19:05:00Z
<p>Created article</p>
<p><b>New page</b></p><div>[[File:WhitworthQuickReturnMechanism.gif|200px|right]]<br />
__TOC__<br />
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=====Description=====<br />
<br />
The [https://en.wikipedia.org/wiki/Quick_return_mechanism '''Whitworth Quick Return Mechanism'''] mechanism changes rotary to oscillating motion but, unlike the '''[[Crank and Slider]]''', the forward reciprocating motion is at a different rate to the backward stroke.<br />
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<br />
It is also known as a '''Coulisse Mechanism''' in reference to the slotted crank ''(i.e. as in [https://en.wikipedia.org/wiki/Portcullis '''Portcullis'''] from the French ‘porte coulissante’ and derived from the Old French ‘Coulisse’ referring to a timber member grooved to take a sliding panel)''<br />
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=====Features and Applications=====<br />
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At the bottom of the slotted arm, the peg only has to move through a few degrees to sweep the arm from left to right, but it takes the remainder of the revolution to bring the arm back. This mechanism is most commonly seen as the drive for a [https://en.wikipedia.org/wiki/Shaper '''Shaping Machine'''].<br />
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=====Animations=====<br />
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* Examples from '''[[2100 Animated Mechanical Mechanisms|Nguyen Duc Thang's]]''' YouTube Channel '''[[2100 Animated Mechanical Mechanisms]]'''<br />
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{|<br />
|-<br />
| '''Coulisse Mechanism'''<br />
| {{#ev:youtube|dqt1jkwLgs0jJ4|150x150|right||frame|loop=1&autoplay=0&playlist=dqt1jkwLgs0}}<br />
| '''Combined Coulisse Mechanisms''' - combination of two '''Coulisse Mechanisms'''. The green rocker has working stroke slower than return one.. <br />
| {{#ev:youtube|RvyKFLZi2SM|150x150|right||frame|loop=1&autoplay=0&playlist=RvyKFLZi2SM}}<br />
| '''Shaper with Coulisse Mechanism''' - reciprocating motion having working stroke slower than return one.<br />
| {{#ev:youtube|5cb7D9pLcq4|150x150|right||frame|loop=1&autoplay=0&playlist=5cb7D9pLcq4}}<br />
|}<br />
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{{Mechanisms Buyers Guide}}<br />
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[[Category:Secondary]]<br />
[[Category:Mechanisms]]</div>
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