Aveling and Porter Traction Engines Promoted in 1870s Brochure

"Patent Farm and Road Locomotive" brochure worth a read

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The Aveling & Porter's Patent Farm and Road Locomotive brochure, circa 1873, concludes with a performance chart comparing the company's "Steam Sapper" with the Sutherhland (with India-rubber tires) road steamer, concluding that "the rigid-wheeled engine took up a greater load in proportion to its weight than the road steamer ... These facts, we think, speak for themselves."