Sewing Machine Speed Controller

Project  / Project number: WM19/52/B  /  Status:

Overlocker Sewing Machine with Hand Operated Speed controller

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The challenge

The client, who is a wheelchair user, was not able to use the foot operated speed controller for her new overlocker sewing machine.

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The solution

A spare foot controller was purchased for the Janome 9300DX overlocker sewing machine so that the special 3pin connector could be obtained.  A metal box was fitted with five 25 watt resistors and connected by about a metre of eight way cable to a plastic box. The plastic box was fitted with a special heavy duty six way rotary switch, a push-on-push-off switch, a rocker switch and a suitably rated push button.  The metal box was provided with ventilation holes, heat sinks and plastic feet.  A warning label “Keep Dry” was attached. The hand controller was successfully PAT tested before delivery.

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The benefit

The client can now operate her overlocker sewing machine by hand selecting any of six different speeds and fast/slow. She can start and stop the machine either by using the push-on-push-off switch or she can hold down the push button for brief stitching.

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