Working Principle of Sewing Machine ( Paddle Part )

  • #1
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Main Question or Discussion Point

Hi guys,
I wanted to ask something that im interested on
Which is on the traditional sewing machine mechanical mechanism (On the foot paddle part)
eccee90e9bacf36b622af9e31321be65.jpg

Image taken from Google.

From the image above, a typical sewing machine
For such application, what is the "Name" for it?
Im more likely wanted to know more about how do i calculate the force from paddle to the sheave

P.S: I've been searching around the internet, all i got on the principle of the sewing machine is on its lock stitch
 

Answers and Replies

  • #2
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
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The mechanism is called a "treadle":

http://en.wikipedia.org/wiki/Treadle

In the days before electric motors became common, the sewing machine operator would use a foot pressing on the treadle to turn a crank, located up above. Turning the crank converted the reciprocating motion of the treadle into a rotary motion used by the sewing machine on top.
 
  • #3
41
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Thanks mate!
I'll look into it
 

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