maybe...An old gent I knew said that hollow points were the appendix or bell bottoms of straight razor manufacturing.
He supposed in the Sheffield days of early manufacture the notches, some are very small, may have been used in the casting, forging or grinding process as stress relief, a gauge or a stay. This feature became associated with quality by the consumer and many manufacturers adopted or imitated it. This feature gradually faded out over time as more automated manufacture, improved metallurgy and forging became common place and Germany and the USA dominated SR manufacturing. You can see in most maker's catalogs in the US and Continental Europe the square, hone, spike and round point came to dominate and the hollow point was a much less common offering.
Just a thought..it may have been a fad that faded
Thank you for posting. I have decided that a Barber's Notch is similar to my knives with varying tip designs. I have an older Japanese made Tanto tip Cold Steel that is sharpened and another Gerber rounded blade that he not. Perhaps this sharpened tip, as with the BN helps slicing, although that's not normally something we SR shavers do.Randomly came across this this site and this specific page / post thread RE: the 'barber's notch' at the tip of most any style straight razor blade.
I thought about other 'random' blade features such as a 'double-ground full flat' blade and asked the same question - why? / what for?
While there are various 'reasons' for such design quirks, they are oft-times simply a designer's 'easter egg' in the design of their blade style.
Seems as most straight blade questions circle the same notion that the notch came from increasing the ease with which a barber would handle multiple different blades throughout his day. It can be said that what is a perfect solution for one, can be merely a design qwirk for someone else.
A sample of undisputed ambiguousness might be: < https://bespokeunit.com/shaving/straight-razor/designs/#barber-notch >
My response to a very much outdated thread.