Equipment made from ĀTO BĀKU
Article about: ITEM 33 Mimeographed “File of Ordnance Documents”, compiled by HIRATSUKA Unit Headquarters, dated January 1941 to January 1943. 170 pages. Summary 13. Equipment made from compressed rubb
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Equipment made from ĀTO BĀKU
ITEM 33 Mimeographed “File of Ordnance Documents”, compiled by HIRATSUKA Unit Headquarters, dated January 1941 to January 1943. 170 pages.
Summary
13. Equipment made from compressed rubber and cotton cloth.
The cloth is stamped to the rubber and vulcanized. The material is used for harness, ammunition pouches and other equipment usually made of leather.
14. Equipment made from ĀTO BĀKU
ĀTO BĀKU is a synthetic rubber produced by treating the bark of the ATOKARUPUSU tree, a member of the mulberry family which grows in Borneo and Celebes. It is used to make sword and bayonet belts.
Source: United States War Department. PACMIRS Bulletin Number 56, 28 August 1945, Page 22.
PACMIRS = Pacific Military Intelligence Research Service located at Camp Ritchie, Maryland.
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Art Bark Specs were issued for the following items.
1937 Sept. 1: Spec sheet issued for use as field cap sweat band
1942 July 6 : Spec sheet issued for use as field cap chin strap B model (Ro)
In both cases the tree bark was used in multiple layers, 2 for sweat band use and 3 layers as a chin strap and both sides were clear-coated with water repellent lacquer.
Art Bark was not a synthetic rubber as the US intelligence report suggests, but simply laminated tree bark, coated in clear lacquer.
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Often referred to as bark cloth.
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In the Pacific rim it is amazing what has developed over better than a thousand years using what nature provides.
In Hawaii the is whats called a tapa mat, for sleeping on as well as bed cover. Originally from Tonga, these are quite versatile. Tapa or Kapa (in Hawaiian) was made from the bark of mamaki or wauke. It was used mainly as cloth for clothing and for sleep coverings or bedding. The the Japanese Tatamai mat is used in the same manner. the Tatamai mat was developed over thousands of years.
Seeing the frog from the side I wonder if when produced the process was the same as Tapa mat in production. The bark is beat down, pressed to remove as much liquid as possible, which produces a sheet. Then laid on top of each other in several layers and perhaps glued. Not certain what glue was used but it certainly looks like the process is similar to tire manufacturing but without the use of rubber.
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工員義成所
Kōin Yōsei-jō
Factory Worker [at a] Training School
[or in better English: Training School Factory Worker]
-- Guy
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Guy,
Thank you very much for the translation, it's appreciated!!
Bruce,
Not too long ago I saw a wood saya covered with ĀTO BĀKU online. It looked identical to the pictured fogs and belt, though I imagine it was thinner. I recall saving pics, or at least I thought I did, as I can't find them. In my mind your pictured saya cover is probably paper as it doesn't have the larger fibers of the pictured gear. Buy who knows??
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