Showing posts with label Loyd Jones. Show all posts
Showing posts with label Loyd Jones. Show all posts

Thursday, October 4, 2012

Loyd A. Jones and Ship Camouflage Models



Above These three designs for World War I ship camouflage are in the collection of the National Archives and Records Administration, in the Records of the Bureau of Ships. Described as "American dazzle camouflage cutouts by an unknown artist, ca. 1917-18," they were made with watercolor on board, each measuring 6" high by 29.25" wide. They are on the Designs for Democracy website here.

No one seems to know who designed these particular ship silhouettes, but most likely they were made for the purpose of testing their visibility in a viewing apparatus (referred to as a "model rack") that was set up outdoors on the shore of Lake Ontario, near Rochester NY, by a civilian team of camoufleurs, headed by Eastman Kodak physicist Loyd A. Jones. In testing them, each cutout was suspended in the viewing frame with eye hooks and piano wire (as shown below), at a height that made it seem to be resting on the water.

A detailed account of the science behind this approach to ship camouflage (illustrated by photographs and diagrams, including this one) was published in Lindell T. Bates and Loyd A. Jones, The Science of Low Visibility and Deception. New York: Submarine Defense Association, 1918. More>>

Saturday, May 5, 2012

American Ship Dazzle Plans


Above are three surviving cut-outs from World War I ship camouflage plans. Painted in watercolor on board and measuring 6" high x 29.25" wide, they were made by an unknown American camouflage artist(s) (c1917-18) and are now in the collection of the National Archives and Records Administration, Records of the Bureau of Ships. My suspicion is that these painted silhouettes were made for testing purposes on the shore of Lake Ontario, under the direction of Eastman Kodak physicist Loyd A. Jones.

Below is a diagram of a visibility testing setup, designed by Jones. The cut-out ship silhouette was suspended from the crossbeam with piano wire and positioned at a height at which it appeared to rest in the water. It was then viewed through a telescopic instrument (devised by Jones) called a visibility meter, and measurements were made of its reflected light. It seems that all the other marine camouflage centers used three-dimensional plaster or wooden scale models of ships, not silhouettes, and substantially different testing methods. For detailed information on Jones' methodology, see Robert G. Skerrett, "Hoodwinking the Periscope" (originally published in 1919), reprinted in SHIP SHAPE: A Dazzle Camouflage Sourcebook (pp. 122-151).