SOURCE: Kenmore Sewing Machine model # c877.15
I have an old Kenmore and here are the directions from my manual: 1. Draw thread from spool through bobbin winder tension discs. 2. Wind thread around an empty bobbin several times. 3. Place bobbin onto bobbin winder shaft with thread coming from rear of bobbin. Push bobbin winder latch against bobbin until it clicks. 4. Release clutch by turning clutch knob toward you. Start machine.
SOURCE: I need to load the bobbin for my singer 247, I have no manual
I am a veteran seamstress and I may be able to help you. it sounds as though you just have the wrong needle in the machine or the needle is in backwards.. Machine needles are different lengths according to what machine it is. The needle could also be dull on the point. Try this and see if it helps. Also your local sew shop can help you no charge if you just go in and talk with them. The techs enjoy helping for the most part I have discovered.
SOURCE: How to thread bobbin in a Janome 415?
Here is a link to the manual that shows how to thread the bobbin. :)
http://www.janome.com/documents/File/ManualFile/415_Instr_book.pdf
insert winder as in fig. check the thread direction
on figure hold and insert bobbins on shuttle race assymble. 
follow the red thread on figure.34 views
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