This tank paper model is the Austro-Hungarian Empire's Burstyn Tank, this tank papercraft is designed by CT Ertz and from landships. The Burstyn tank was a paper proposal by an Austrian Army officer Gunther Burstyn, afer he saw tracked agricultural tractors. The Austro-Hungarian authorities showed no interest when it was proposed to them in 1911. Burstyn eventually patented his design but did not progress beyond a paper project. HGM (Heeresgesschichtliches Museum) in Vienna constructed a full sized model of the Burstyn tank in 2011. The folding "arms" on the tank were designed to help with trench crossing. The front pair were capable of swivelling to help with steering. [via CT Ertz]
An Austrian army officer, k.u.k Genie-Oberleutenant Günther Burstyn (born on 6/7 1879 in Bad Aussee, Steiermark, and dead 15/4 1945 in Korneuburg, Niederösterreich) inspired by the sight of the American Holt agricultural tractor with crawler tracks, designed a small tracked vehicle, which he called a Motorgeschütz (motor-gun), built it in model form, and sent this and the design to the Austrian War Office in October 1911. Had it been built the vehicle would have been 3.5m long, 1.9m wide and 1.9m high. Cross-country speed would have been about 8 km/h, road speed 29 km/h. It would be propelled by a 60HP Truck Engine. The four subsidiary wheels, two at each end on arms, could be lowered as required, the rear pair being driven as an aid to traction and the front pair, which could be pivoted, being intended for steering. It was supposed to have an armament of a small calibre fast fire gun (30-40mm calibre). Its tactical use would be close support of Infantry Attacks, for suppression of enemy MG's, and also frontal attacks against enemy artillery positions.
The Austro-Hungarian War Office returned the designs to Burstyn saying they might be interested if a commercial firm could build it: Burstyn had no industrial contacts and so let the matter drop. Also, the War Office declined to finance any further work. Meanwhile the German War Department asked to see the design, but were not enthusiastic even though a leading German military periodical keenly endorsed the idea. A further complication arose when Burstyn in 1912 sought to patent the design and was told that this could not be granted as it infringed existing patents, including those for agricultural tractors. (He eventually was granted a patent, no Zl. 252 815 DRP.) Thus discouraged, Burstyn allowed the idea to drop, and it never progressed beyond paper.[via landships]