^ Ringer Worcester, Worcester, MA / tool storage systems / patent 1052516 Feb 11 1913 & 1336584 Apr 13 1920 & 1418095 May 30 1922 & 1481560 Jan 22 1924 & 1582541 Apr 27 1926 & 1694487 Dec 11 1928 Soren Ringer /
1694487 is cited as prior art on 663118 and 2485172
Ringer was originally from Copenhagen, Denmark, then moved to Chicago, and then on to Worcester.
I'm not finding a patent applicable to the box, but it's abundantly clear the man certainly had the know-how and the means to produce the box.