The patent records show a number of designs for daylight-loading developing tanks that never, as far as I am aware, made it to the manufacturing stage. Here is one, a US patent granted in 1950*:
Reading this, I see it as a vertical Rondinax 60 for roll film. There is a mechanism to separate the film from the backing and another to draw it into the spiral. I am not sure what was sufficiently original in this design for the patent to be granted.
Here is one of the drawings:
Does anybody know if Mr Abraham Alk’s invention ever made it to the market?
It would appear he was also the inventor of a hand press. It seems likely that he is the Abraham Alk who was born in 1912 and died in 2001 at Fair Lawn, New Jersey.