Patrons funded artists and often paid a selection of chosen artists a salary. This injection of money in an artist was often exchanged for artworks and/or commissions, this dramatically helped impoverished artists hone their craft and develop new ideas for artworks. Also, patrons often commission artists to create an artwork with a specific brief or themes that they themselves have chosen, shaping the content of the artwork also.
I am pretty sure that it is an Early American style
Answer:
you have to take the bobbin case out and then you can use a brush for that purpose or a tiny screwdriver for the small hard to get to parts to get the thread out and then just reverse the procedure to get the bobbin case in and bobbin then your all set to sew again.