Hi Kurt,
Here is your translation/transcription, except one word which I was not able to read.
1) Tevekkeltu ala'llah - Maşae Allah - Amel-i 'Ömer - Sahib Bende-i ....... Hüseyin Sene 1240
I put my trust on Allah - May God preserve him from evil - Made by Ömer - Owner Hüseyin, servant of ......... Year 1824-1825
2) Nasrun min Allahi ve Fethun karib - (As Ward pointed out) Help from Allah and victory is near: In fact this is a part of an ayet (Give the believers the good news of the help from Allah and the victory is near)
3) Bu bıçağın sahibi mansur ola - Rahm-ı 'adası onun makhur ola
Let the owner of this knife be victorious - Let the family of his enemy be in deep sorrow
There is one reservation about my transcription though. Since the calligraphy is very stylish, the date is very confusing. It stands like 2410 - first I tended to read it as 1024 (which makes it 1615-1616) but then I decided to read it as 1240 (1824-25), which is more correct I think
