Group 1 2012 Gate 5 - Revision history

MAE 277 2012 - Group 1: /* Frame */

2012-12-14T18:21:52Z

Frame

MAE 277 2012 - Group 1: /* Action */

2012-12-14T17:53:40Z

Action

MAE 277 2012 - Group 1: /* Action */

2012-12-14T17:53:30Z

Action

MAE 277 2012 - Group 1: /* Action */

2012-12-14T17:53:10Z

Action

MAE 277 2012 - Group 1: /* Component Summary */

2012-12-14T17:50:29Z

Component Summary

MAE 277 2012 - Group 1: /* Action */

2012-12-14T17:49:50Z

Action

MAE 277 2012 - Group 1: /* Component Summary */

2012-12-14T17:49:18Z

Component Summary

MAE 277 2012 - Group 1: /* Component Summary */

2012-12-14T17:48:39Z

Component Summary

MAE 277 2012 - Group 1: /* Frame */

2012-12-14T17:45:32Z

Frame

MAE 277 2012 - Group 1: /* Component Summary */

2012-12-14T17:42:58Z

Component Summary

@@ Line 67: / Line 67: @@
 The frame, as previously mentioned, is a very large and heavy piece of cast iron whose primary function is to provide support to the strings. Its considerable weight and thickness is to ensure that the strings can be placed under high enough tension to produce the correct sound without warping.(Fig A)
 <br clear=all>
 ====Housing====
 [[File:PianoCase.jpg|200px|frameless|border|left|Fig B. The housing]]

← Older revision		Revision as of 17:53, 14 December 2012
Line 58:		Line 58:

	The action also contains mechanisms for modifying the tonality of every key strike: depressing the two pedals results in the raising and lowering of two bars that respectively increase the volume of the piano, and change its tonality and make the piano quieter by shifting all of the hammers closer to the strings.(Fig C.)		The action also contains mechanisms for modifying the tonality of every key strike: depressing the two pedals results in the raising and lowering of two bars that respectively increase the volume of the piano, and change its tonality and make the piano quieter by shifting all of the hammers closer to the strings.(Fig C.)
		+
		+

	[[File:Piano-action.gif]]		[[File:Piano-action.gif]]

← Older revision		Revision as of 17:53, 14 December 2012
Line 58:		Line 58:

	The action also contains mechanisms for modifying the tonality of every key strike: depressing the two pedals results in the raising and lowering of two bars that respectively increase the volume of the piano, and change its tonality and make the piano quieter by shifting all of the hammers closer to the strings.(Fig C.)		The action also contains mechanisms for modifying the tonality of every key strike: depressing the two pedals results in the raising and lowering of two bars that respectively increase the volume of the piano, and change its tonality and make the piano quieter by shifting all of the hammers closer to the strings.(Fig C.)
		+
	[[File:Piano-action.gif]]		[[File:Piano-action.gif]]

@@ Line 54: / Line 54: @@
 For a more in-depth analysis of the components of the piano, see [[Group 1 2012 Gate 3 #Component Summary|Gate 3: Component Summary]].
 ====Action====
-[[File:2012_Group_1_Picture_10.jpeg|frameless|border|ledt|200px|Fig C. The action]]
+[[File:2012_Group_1_Picture_10.jpeg|border|left|200px|Fig C. The action]]
-The action is largely an array of levers and and a four bar linkage that translates the vertical motion of the keys into the largely horizontal motion of the hammers, while yielding the user a high degree of control over the duration and speed of the hammer strike. The typical piano has 88 keys, so the action contains 88 identical sets of pull rod/action linkage/hammer sub-assemblies. [[File:Piano-action.gif]]
+The action is largely an array of levers and and a four bar linkage that translates the vertical motion of the keys into the largely horizontal motion of the hammers, while yielding the user a high degree of control over the duration and speed of the hammer strike. The typical piano has 88 keys, so the action contains 88 identical sets of pull rod/action linkage/hammer sub-assemblies.
 The action also contains mechanisms for modifying the tonality of every key strike: depressing the two pedals results in the raising and lowering of two bars that respectively increase the volume of the piano, and change its tonality and make the piano quieter by shifting all of the hammers closer to the strings.(Fig C.)
 ====Frame====

@@ Line 54: / Line 54: @@
 For a more in-depth analysis of the components of the piano, see [[Group 1 2012 Gate 3 #Component Summary|Gate 3: Component Summary]].
 ====Action====
-[[File:2012_Group_1_Picture_10.jpeg|frameless|border|right|200px|Fig C. The action]]
+[[File:2012_Group_1_Picture_10.jpeg|frameless|border|ledt|200px|Fig C. The action]]
 The action is largely an array of levers and and a four bar linkage that translates the vertical motion of the keys into the largely horizontal motion of the hammers, while yielding the user a high degree of control over the duration and speed of the hammer strike. The typical piano has 88 keys, so the action contains 88 identical sets of pull rod/action linkage/hammer sub-assemblies. [[File:Piano-action.gif]]
@@ Line 60: / Line 60: @@
 ====Frame====
-[[File:2012_Group_1_Picture_47.jpeg|frameless|border|200px|right| Fig A. The frame]]
+[[File:2012_Group_1_Picture_47.jpeg|frameless|border|200px|left| Fig A. The frame]]
 The frame, as previously mentioned, is a very large and heavy piece of cast iron whose primary function is to provide support to the strings. Its considerable weight and thickness is to ensure that the strings can be placed under high enough tension to produce the correct sound without warping.(Fig A)
 <br clear=all>
 ====Housing====
-[[File:PianoCase.jpg|200px|frameless|border|right|Fig B. The housing]]
+[[File:PianoCase.jpg|200px|frameless|border|left|Fig B. The housing]]
 The housing is the wooden structure that supports the action and frame. It consists of glued and/or screwed together wooden planks and provides the shape of the piano. It also has a sliding cover to protect the keys(Fig B).
 <br clear=all>

@@ Line 57: / Line 57: @@
 The action also contains mechanisms for modifying the tonality of every key strike: depressing the two pedals results in the raising and lowering of two bars that respectively increase the volume of the piano, and change its tonality and make the piano quieter by shifting all of the hammers closer to the strings.(Fig C.)
-[[File:2012_Group_1_Picture_10.jpeg|200px|Fig C. The action]]
+[[File:2012_Group_1_Picture_10.jpeg|thumb|right|200px|Fig C. The action]]
 ====Frame====
-[[File:2012_Group_1_Picture_47.jpeg|200px|right| Fig A. The frame]]
+[[File:2012_Group_1_Picture_47.jpeg|thumb|200px|right| Fig A. The frame]]
 The frame, as previously mentioned, is a very large and heavy piece of cast iron whose primary function is to provide support to the strings. Its considerable weight and thickness is to ensure that the strings can be placed under high enough tension to produce the correct sound without warping.(Fig A)
 ====Housing====
-[[File:PianoCase.jpg|200px|right|Fig B. The housing]]
+[[File:PianoCase.jpg|200px|thumb|right|Fig B. The housing]]
 The housing is the wooden structure that supports the action and frame. It consists of glued and/or screwed together wooden planks and provides the shape of the piano. It also has a sliding cover to protect the keys(Fig B).
 ===Proposed Revisions===