Hi Cathy....
re the vintage sewing machine site...I haven't looked yet but I have the sewing machine that my aunt taught me to sew on when I was a child....it is in my loft and has been for about 20 years without me looking at...I reckon it is from the 50s or even earlier...if I remember rightly it has long thin bobbins and a long shuttle....have only kept it for sentimental reasons...will go up and have a look at it tomorrow maybe