Unlikely to have been manufactured for sale -  certainly there is no record of any surviving - the L.H.Sandersion joins other watch lathes patented but not marketed including ones by J.A.DeVries, N.W.Holt, P.B.Conklin and Williams. Also, referenced in contemporary publications but with no patent records and almost certainly never made for sale were the R.Cowles, Haskett, Jackson, and Leffel & Mulholland.
Patented on March 15th, 1881 with the number 238,971, the Sanderson appears to broken no new ground in terms of technical development, but did show a simple, plain-turning lathe that had employed a minimum number of parts and mounted on a treadle stand of a unique design. While most lightweight treadle lathes had two legs with the flywheel mounted inside the frame on the left-hand side, on the Sanderson the frame consisted of a single bar, formed at its lower end into a slot in which the flywheel turned. While economical in its use of materials, the stand did pose two problems: somewhat restricted access to the job by the turner and the difficulty of making the whole assembly rigid enough not to wobble about on its base.
Many lathes have been mounted on single-post, treadle-drive stands; however, these were heavier machines with examples including the Pittler "Trumpet Stand" mounted Model B2 from the 1920s, the 1881 Weisser, and the Ehrlich - all also shown below.