It’s known as a screw key lock. It’s an early form of padlock. The big problem with this type of lock is that they are still being made today (mostly in India) however the quality of them is quite poor.
Yours looks good & solid so it must have some ago to it. As to where & when it was made I have no idea & unless it is marked no-one will be able to say for sure.
It may have been nearly new when it was purchased in the 30’s, or it could have been 50, 100 or 150 years old at that time.