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Life around us is full of mechanisms making living easier, and there must have been a time when
you wished that you know how to design mechanisms to help you with different things.
Well, I'm going to teach you some ways to design mechanisms of your own.
You may think that it is hard and complicated process; on the contrary,
it is a very striate forward method that you will like a lot. Let's get to business then.
The following is a list of different design methods.

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Let's say that you want to move something from one position to another. We will
suppose that the object we want to move has a triangular shape. Here are the steps
to obtain the desired mechanism:
1. On a paper, draw the two positions desired.
2. On the first position of the object, label one angle A1 and another one B1.
3. On the other position, mark A2 and B2. Note that A1 and A2 must correspond
in both positions, and the same goes for B1 and B2.
4. Draw a line joining A1 and A2.
5. Draw a line joining B1 and B2.
6. From the middle of the line A1-A2, draw a perpendicular line. Label it C.
7. From the middle of the line B1-B2, draw a perpendicular line that will intersect
with the line from A1-A2. Label it D.
8. Locate the intersection between the two lines. Label it P.
9. Pick any point on the line C. Label it A. A has to lie between P and A1-A2.
10. Pick any point on the line D. Label it B. B has to lie between P and B1-B2.

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Now, you want to move something from one position to second and third positions
simultaneously. We will suppose that the object we want to move has a triangular
shape. Here are the steps to obtain the desired mechanism:
1. On a paper, draw the three positions desired.
2. On the first position of the object, label one angle A1 and another
one B1.
3. On the 2nd position, mark A2 and B2. Note that A1 and A2 must
correspond in all positions, and the same goes for B1 and B2.
4. On the 2nd position, mark A3 and B3. Note that A1, A2, and A3
must correspond in all positions, and the same goes for B1, 2, & 3.
5. Draw a line joining A1 & A2, and another joining A2 & A3.
6. Draw a line joining B1 & B2, and another joining B2 & B3.
7. From the middle of the line A1-A2, draw a perpendicular line.
8. From the middle of the line A2-A3, draw a perpendicular line that
will intersect with the line from A1-A2.
9. Locate the intersection between the two lines. Label it A, the 1st
ground point.
10. Repeat Steps 7, 8, and 9 for B1, B2, and B3.

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Of course, there are other ways to design mechanisms; however, they get more complicated than
these. You can contact me in case you have any questions, and I will be happy to help you.

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(c) 1998 Jassim Alhor. All Rights Reserved.