In the book "Encyclopedia of Tanks" by Duncan Crow & Robert J. Icks is this information about early American tank projects:
"Shaffer Armoured Tractor, 1915, based on Fageol orchard tractor, spiked front wheels, conventional rear wheels, small cylindrical turret w/bevel face, 1 mg, 1 1/2 tons, project only, 9' 10 1/2" x 4' 6" x 7'.
Automatic Land Cruiser I, 1915, based on Automatic Machine Company 'Alligator', 19 bogie wheel chassis, bevelled prow, Driggs Schroeder 1pdr gun pedestal-mounted in bow, driver and commander on raised seats under centre cupola, overhung rear, project only, 23' 6'' long.
Automatic Land Cruiser II, 1915, similar but rounded armour, centre front sponson, small side mg sponsons, 1pdr gun and 2 mg front, 2 mg rear, 6 three wheel bogie sets, project only".
Information about and image of third of these machines - Automatic Land Cruiser II - are in the book "Firepower" by Hunnicutt.
Has anybody information about the another two projects and any of their images?
I assume that this picture's the Land Cruiser II. i.imgur.com/s1cM4BD.jpg">
The only picture of a Fageol, that has spiked front wheels, is this one. cyberneticzoo.com/wp-content/uploads/walking-tractor-psmay1918-3-x640.jpg">
An article copied from AFV-G2 magazine here forum.worldoftanks.com/index.php
mentions nothing about the Fageol being built, just that the inventor was trying to interest the German consul! and 1 prototype each of the Automatic Land Cruisers being built.
Acc to Fred Crismon, the first US vehicle driven by Archimedes Screw was a 1941 prototype, and it didn't look like that. But it does look familiar.
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A Russian website claims it's a model of a vehicle proposed by Samuel Cody. I've never seen any reference to him having any technological interest other than aviation, but I'd be delighted to be proven wrong.
The, admittedly not very long (7 paragraphs), piece on Cody in Oxford Dictionary of National Biography has no mention of him having any other such tech interest beyond planes. and the references list looks fairly convincing. Wonder if some other aeronaut has got mixed up with Cap'n Cody?
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