Compton Cecil Paterson designed and had built 2 machines of the "boxkite" style in England before going to South Africa where he built 2 more. One had a front elevator while the other is the one shown. They were used to train the first South African military pilots, and when that was done in December 1913, the school was disbanded. Shortly after, Paterson returned to England. There are a couple of pictures in Flight; I will find them and post the reference later.
Here are the Flight references, plus another on S.A. aviation history that gives some other details. Incidentally, Paterson is usually given as Cecil Compton, although I think Goodall and Tagg have it the other way round.
It is also possible that the machine here was not built by Paterson, but obtained by him from someone named Carpenter (but still might have been a Paterson design). At any rate it is not the Paterson No. 36 rebuild that has the front elevator and exists as a replica in a South African museum.
http://www.flightglobal.com/pdfarchi...=south-african
http://www.flightglobal.com/pdfarchi...=south-african
They Mounted up as Eagles - South African Military History Society - Journal