Since it's a sewing machine, I believe you could set it outside and wipe it with a damp treated cloth (wear protective gloves). use a vacuum and wipe it down again. A white cloth so you can see what you have. I have suggested to clients who purchase homes with carpet to have the place professionally cleaned or possibly remove all the carpet for that very reason. Brand new carpet can get bed bugs if the installers transfer them from home. We quit buying used furniture from private individuals unless we know them really well.