Spring Camera
The word of "Spring Camera" is not a formal name. It has to be called a "Folding Camera".
It can be seen the word of "Spring Kamera" on the pre War German's camera catalogue. It is much popular here in Japan that they call as a Spring Camera which can be self erected by spring forces. The right photo is Super Ikonta 530/2 with Tessar 105mm F4.5 pre War version. (Thanks Mr.Kinkoh for the photo supply.)