Rank: Forum user 
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Hi
Can anyone offer any further guidance with regards to the emergency stop function requirements for sewing machines, we have a sewing room with approx. 20 sewing machines ranging in age, makes and models. All are operated with user foot treadles and each machine has a start and stop button. In addition, we have separate isolation switches which are easily accessible next to the machines. The machines are used for teaching students.
Do we need to install emergency stop buttons to the machines?, if they were fitted it would stop the machine and it wouldn't automatically return the need to the up position and it wouldn't add to lessen the risk.
I've been researching and the information related to emergency stops seems to indicate they are not required for some hand guided tools. 'It is applicable to all machinery except for machines in which the provision of emergency stop would not lessen the risk, and hand-held portable machines and hand-guided machines. It does not deal with functions such as reversal or limitation of motion, deflection, shielding, braking or disconnecting, which can be part of the emergency stop function'.
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Rank: Super forum user
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I will let others comment on the requirement for e-stop.
On a technical note the user has a foot switch, not a treadle on modern sewing machines. Treadles were in vogue before electric machines became widely available and these have a reciprocating action. This drives the machine mechanically and it can build up quite a bit of momentum, so that taking the foot off the treadle does not stop the machine dead. (I have a circa 1908 Singer at home).
In my experience electric machines come to an almost dead stop when you take your foot off the foot switch. I taught my 10 and 12 year-old granddaughters to use their new electric sewing machine at Christmas. I will be donating my hand operated chain stitch machine to the younger one (9 years old).
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Rank: Forum user
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Thank you Jane
It is a foot switch, we have also slowed the machines down for the learners that operate them.
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Rank: Super forum user
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Andrew
Have you got needle guards on the machines?
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Rank: Forum user
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Hi Peter
The needle guards are the standard typical sewing machine guards which go round the main need operation and there are no adaptions. I have identified additional guards are needed on some of the machines underneath the benches to encase drive belts etc..
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