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uneven surfaces. The cutting discs were on an extended floating arm, which followed the land they were working. Depth was regulated by two levers and the discs could be reversed to turn soil towards or away from trees. Soil was turned towards the trees in autumn and away from the trees in spring. This facilitated drainage in the wetter months and conserved water in the dryer months. The plough was manufactured in two types: light and heavy. The light weighed 7 cwt and the heavy 8 cwt 2 qrs.
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It is thought that he asked his brother
Herbert, who had greater mechanical skills, to assist him with the development of the plough. Another application dated 24 July 1933 was lodged in joint names. This resulted in an Australian Patent being advertised on 4 October 1934 and subsequently granted.
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Frank Petty probably conceived the idea for a steerable plough, although the source of his inspiration is unknown. He invented many useful objects for use on his orchard. He developed and marketed the 'Whirlpool Spray Mix' a device not unlike a giant eggbeater which clamped to the inside of a drum
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A subsequent prototype plough was constructed using the front axles from two T Model Fords. All four wheels were steerable. Front and rear wheels turned independently of each other. The tyres were removed, and the plough ran on the rims of the wheels, which had wooden spokes. The main structural
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Experimental versions of the plough went through several iterations. An early version involved the operator walking behind a device on which while all four wheels were steerable, the front and rear wheels turned together. The operator controlled the direction of the device by moving from side to
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The Plough was fitted with lever and foot controls which operated four straight disc wheels. These were turned in and out of the trees as the operator desired. The wheels would sink into the ground about 2.5 inches, giving good control and preventing side slipping often associated with ploughing
119:"The Petty Orchard Disc Stripping Plough is the greatest labour saver of all time. It eliminates a lot of back-breaking work in cutting out the strips between trees. The operator is able to ride on the plow seat, thus sitting down and doing the job in comfort."
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It could be used as a single furrow, double furrow or triple furrow plough. The single furrow plough had one 23-inch diameter disc, the double furrow had one 23-inch disc and one 20-inch disc, while the triple furrow had three 23-inch discs.
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members of the plough were made from 4-inch hardwood, joined at each end by specially made steel strips bolted to the timber. The operator sat on the plough and steered using a series of levers and foot controls.
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was cultivated. The Petty Plough was designed to plough between and around the fruit trees, working right up to the trees, eliminating the need for slow and tedious manual cultivation between the trees.
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The ploughs were manufactured by Daniel Harvey, a machinery maker located in Box Hill, a locality adjoining
Doncaster under licence from Frank and Herbert Petty as the patent holders.
265:'Harvey "Petty" Orchard Disc Stripping Plow', Daniel Harvey Limited, Box Hill, Melbourne, Victoria Bulletin No 8, Page 2, Circa 1935, Museum Victoria Collection
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The prototype sat for many years unused and forlorn under a row of pine trees on Frank's property. It was destroyed in a grass fire in the late 1960s.
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The plough was widely used in South
Eastern Australia including Tasmania, Western Australia, New Zealand, New Guinea, and Germany.
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Collyer, Eric: Doncaster and
Templestowe Historical Society Inc, newsletter, December 2009, Doncaster, Victoria.
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On 10 October 1932, Frank made a 'Provisional
Application' for a Plough and Cultivator. This lapsed in 1933.
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Various D. Harvey bulletins from Daniel Harvey Trade
Literature Collection, Museums Victoria Collection
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Changes in orchard management, specifically a change from cultivation (also referred to as
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of fruit spray, with a handle which when turned was designed to mix the spray.
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side a long lever which projected tiller like from the rear of the device.
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developed by brothers Frank and
Herbert Petty of Doncaster, Victoria,
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Frank Petty
Whirlpool Spraymixer patent "awaiting approval" stencil
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The Petty Plough could be pulled by two horses or by a tractor.
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The plough was also patented in the United States of
America.
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Tractor Drawn Petty Plough - Daniel Harvey Ltd, Bulletin 218-D
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https://collections.museumsvictopria.com.au/items/1531905
256:, Aug–Sept 2017 p. 42, Webstar, Sydney, New South Wales.
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Official
Journal of Patents, Trade Marks and Designs
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Official Journal of Patents, Trade Marks and Designs
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Official Journal of Patents, Trade Marks and Designs
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Provisional Application Number 14,819, (Australian)
239:‘Thorough Cultivation of the Orchard is Important’,
59:Frank and Herbert Petty were orchardists, growing
159:Frank Petty Whirlpool Spraymixer For Sale, 1933
243:, 18 November 1933 p. 48 accessed 28 May 2023.
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134:Petty Plough and Attachments User Manual
126:Petty Plough and Attachments User Manual
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287:Application Number 9595, (Australian)
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291:Vol 2 No 40 p 1271, 20 October 1932
278:Vol 3 No 42 p 1187, 26 October 1933
107:Petty Plough driven by Milton Petty
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312:Australian patent 13,603/33
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254:The Old Machinery Magazine
196:Petty plough serial number
99:Petty Plough in operation
174:The Famous Petty Plough
50:Petty Plough Film 1930s
252:‘The Little Bulldog’.
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20:was a steerable
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18:Petty Plough
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88:Description
346:Inventions
335:Categories
211:References
55:Background
26:Australia
73:cherries
341:Ploughs
205:tillage
81:orchard
77:peaches
139:Design
69:lemons
61:apples
22:plough
65:pears
75:and
16:The
337::
219:^
71:,
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63:,
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