Object StatementSteam road roller (steamroller), type D No.10637, compound cylinder, 6 hp, iron/steel, made by Aveling and Porter Ltd, Rochester, Kent, England, 1922-1923, used by Bowral Municipal Council, New South Wales, Australia, 1923-1955
Physical DescriptionSteam road roller, (steamroller), type D No.10637, compound cylinder, 6 hp, iron/steel, made by Aveling and Porter Ltd, Rochester, Kent, England, 1922-1923, used by Bowral Municipal Council, New South Wales, Australia, 1923-1955
The road roller is similar in appearance to a traction engine but instead of two front wheels it has two wide rolls set closely together. The two rear wheels have broad flat tyres and act as rear rolls. The Aveling and Porter road roller is of standard roller design, with its front rolls well forward under a projecting saddle. It features a side-by-side compound engine with piston valves set on top of a horizontal boiler behind the chimney. The flywheel is of the disc or block type and steering is via a worm gear and chain fixed to the protruding front roll spindle. The rolls are attached via a kingpin that acts as a swivel through a plate bracket on an iron saddle in front of the smoke box door. A canopy protects the driver from the weather.
Builder: Aveling and Porter Ltd, Rochester, Kent, England
Model: Type D
Working pressure: 180 psi (1 241 kPa)
Rating: 6 horse power
Working weight: 8 tons (8 tonnes)
MarksPrinted in bright green and yellow on both sides of the engine is, 'MUNICIPALITY / OF / BOWRAL'. On the rear left centre of the wheel is, 'AVELING & PORTER LTD ROCHESTER' and a plaque printed in gold on a red background reads, 'RESILIENT SCARIFIER / C & FS PRICE'S PATENTS 118487 119406 18 / SOLE MANUFACTURERS / AVERLING & PORTER LTD / ROCHESTER / No 224'. Another oval plaque on the right hand side reads, 'BY ROYAL LETTERS PATENT / No 10637 / AVELING & PORTER / LIMITED / ROCHESTER / KENT. ENGLAND'. 'D83' is stamped in red on the back cogs of the engine and 'D149' is stamped on the body covering the front roller. Inside is a guage marked 'PRESSURE' and two plaques. The first reads, 'WORKING PRESSURE TO BE FULLY / MAINTAINED TO RED LINE ON PRESSURE GUAGE' and the second reads, 'CLEAN OUT THE BOILER / AFTER WORKING 100 HOURS'. Below this is also 'WATER LEVEL' stamped in black and on some exterior metal joins is '3468' and 'D782'.