Last June, I wrote an entry about the clothing worn by George Mallory on his fated attempt to reach the summit of Mount Everest. From studies done in the UK, it was found that his apparel was 20%-40% lighter in weight than modern day gear but was warmer and more comfortable. Of particular interest to researchers was a pivot sleeve built into the Burberry jacket Mallory wore. The pivot sleeve was an ergonomic feature that permitted full range of motion. Unfortunately, researchers can’t find an actual sample of this sleeve (which is one of the reasons I posted about it) so if you know of one, do let us know.
Courtesy of Jason Sprowls, we have an update. He found a draft of the pivot sleeve in The Tailor and Cutter, Ltd (undated but estimated to be between 1952-1958). Below is a sketch of the finished sleeve which you can download (pdf).
I haven’t put the thing together yet but there’s something interesting going on with the back side of that under sleeve; the gusset is obviously peaked. It’ll be interesting to see how this sews up. You all try it too. Play, have fun.