Hmmm...I've encountered the term "Hamaguriba" before, but it was in terms of the entire profile of the blade.

Here are links (Japanese language, but there are pictures)
Wikipedia
Tojiro.net (Also, scrolling down will show a discussion of Kobatome.)
Tojiro.net lists it as a Western knife profile.


DrNaka, could this be another way of referring to "Kobatome", or double bevel as we call it here? Iwasaki Kousuke-san called it "Ha tome" in his manual.