As has been noted the Japanese sun helmet went through several stages of evolution before and notably during World War II. One factor was the ability of manufacturers to acquire the supplies and materials. Helmets that were made of straw and even helmets that were essentially cloth and felt with little in the way of an frame apart from Sanada tape – but one unique and disputed variation is the bamboo helmet. Continue reading
This is a special study of Japanese tropical helmets by Nick Komiya, and is presented in four parts.
On 10th March 1939, the Patent Office Granted Utility Model Number 264722 to a Shotaro Fujioka of Tokyo for his invention of the flexible liner size adjustment system he developed for the Army’s Type 98 Sun Helmet. Fujioka was an employee of the Army’s Main Clothing Depot. The Army had applied for this on 2nd April 1937, just before sending the prototypes out for testing in Taiwan. Similar to a patent, but simpler to obtain, it is the same as the German Gebrauchsmuster system (when items are marked DRGM). Continue reading