Yes, TC, it's a Jose Weiss' flying wing glider. My source says it's Olive (he named his aeroplanes according to his daughters) - Wiki claims that Olive was another make.....
"GLIDING AND SOARING FLIGHT" is the title of a book published by Sampson Low, Marston and Co., Ltd. The author is
Mr. J. Bernard Weiss, son of the late Mr. Jose Weiss, who was one of the pioneers of flying in this country. The book has a preface by Mr. C. G. Grey, and an appendix by Mr. W . H. Sayers. It is in no sense a technical work on gliding, but is rather a historical account of what has been done from the earliest days up to the present time. Incidentally it gives a fuller account of the work of Jose Weiss than has hitherto been available, and the experiments of that early pioneer deserve to be much more widely known than the yare. As Mr.Grey points out in his preface,"Mr. Jose Weiss—such is our English custom—is much better known in the United States as a great painter of English landscapes than he is in this country in his more important manifestation as a great pioneer of aviation." The price of " Gliding and Soaring Flight " is 5s. net. (Flight, April 19, 1923)
Jose Weiss died in December 1919
(Flight, December 25, 1919
It is with great regret that we have to record the death of Mr. JOSE WEISS, who was one of the British pioneers and worked most painstakingly first with gliders and later with power driven machines, in which both the body and the wings were given the characteristic shape of a bird.
Over to you - take your time.
Good night!