To much oil (if it's industrial) or broken oil seal on top crank shaft
Factory Serviced
Some of the cheaper sewing machines on the market consist of various Brother and Singer machines. Brother and Singer sewing machines can go for as cheap as $200 on Amazon. Though these machines are cheap, it doesn't mean that they are bad. Cheaper machines are useful for a person who just enjoys sewing as a hobby. If you are a professional, then it is a good idea to purchase a more expensive sewing machine.
A lot of people do. If you mean Celebrities, than I don't know.
If you mean models of sewing machine, probably hundreds. Singer started in 1851 and made many industrial models as well as home sewing machines.
I'm not 100% sure what you mean by "outlines". If you mean sewing patterns, there are sites where you can get those. Here are a couple: http://plussize.lovetoknow.com/Free_Sewing_Patterns_for_Plus_Size_Women and http://www.sewgrand.com/ .
it mean a sewing machine that run by electrricity
Embroidery is decorative sewing, sewing not for the purpose of maintaining the structure of a garment, but for making it pretty.
Mean Machines was created in 1990.
Sewing.
Mending means sewing, same thing. You should've looked it up in the dictionary, LOL.
Very little and is worth more as scrap metal. Just because something is old does not mean it is valuable. Nobody is learning to sew their own clothes anymore and as a result sewing machines are not collectable.
The shank on a sewing machine is the distance between the bottom of the preser foot and the screw that holds the presser foot in place. This applies to older sewing machines (usually pre-1980), as newer machines have a presser foot that snaps on, as opposed to screws on. --A high shank machine measures approximately 1 1/4" from the presser foot screw to the bottom of the foot, and uses High Shank presser feet --A low shank machine measures approximately 3/4" from the presser foot screw to the bottom of the foot, and uses Low Shank presser feet