. . . "(please expand with additional info on models manufacture and any known preserved machines) Aveling and Porter was a British steam roller manufacturer. Thomas Aveling and Richard Thomas Porter entered into partnership in 1862, developed a steam engine three years later in 1865 and produced more of the machines than all the other British manufacturers combined."@en . . . . . . . . . . . "(please expand with additional info on models manufacture and any known preserved machines) Aveling and Porter was a British steam roller manufacturer. Thomas Aveling and Richard Thomas Porter entered into partnership in 1862, developed a steam engine three years later in 1865 and produced more of the machines than all the other British manufacturers combined."@en . . . . "Aveling & Porter"@en . . . .