Howzat! Cambridge University engineers recreate Venn’s historic bowling machine
Dr John Venn, who died in 1923 aged 88, created the device in the early 1900s, as well as giving his name to Venn diagrams.
A wooden contraption that bowled out an Australian international cricketer four times in 1909 – and was designed by the mathematician who gave his name to Venn diagrams – has been recreated by Cambridge University engineers.
The bowling machine was the brainchild of Dr John Venn and its recreation can launch balls towards a batter at around 33mph.
Dr Venn, who died in 1923 aged 88, was president of Cambridge’s Gonville and Caius College and created the device in the early 1900s.
It was reportedly so accurate that when members of the Australian cricket team visited Cambridge in 1909, Dr Venn’s gadget clean bowled one of their star batsmen four times.
All they had to work from was a black-and-white photograph of the 7ft machine, and a patent application from the time.
The machine propels the ball using a throwing arm powered by bungee cord, and also puts spin on the ball.
Hugh Hunt, professor of engineering dynamics and vibration at Cambridge, set the university’s engineering department the challenge of recreating the machine.
He has previously led teams of investigators on the Channel 4 shows Dambusters: Building The Bouncing Bomb, and Attack Of The Zeppelins, and has a research interest in “spinning things that fly”.
Prof Hunt said: “It’s a great story, and an ingenious device, and at the time would have been in a lot of newspapers, but now it’s not really remembered outside the cricket world.
“So the idea behind the project was to recreate a bit of history, and to show how much fun you can have with maths.”
Thomas Glenday, head of design and technical services in the university’s Engineering Department, said the engineers had to work out the technical detail of the machine when recreating it.
“The patent is around the intellectual property, rather than the technical detail, so we didn’t have a set of engineering drawings to work with,” he said.
“The spin has been the key piece, and probably the most complicated part of the design.
“It’s thinking about the different forces that are acting on the ball simultaneously, and that transition of energy – it makes one hell of a diagram!”
He said that they started with a one-fifth-scale model and initially tried using coil springs.
“Large coil springs are somewhat more dangerous than a bungee cord,” he said.
He added that radar gun tests showed their machine was bowling at around 33mph.
“I’m very pleased with how it’s turned out,” Mr Glenday said.
“It’s a historic relic which should be treated as such.”
He said that a similar machine today may be made from carbon fibre and using a 3D printer but they wanted to be historically authentic so used hardwood.
“Back then it was where the skill set was – people were used to working with wood, which has natural faults, which moves, which is not necessarily square,” he said.
He added: “It’s a fun project, but we definitely wanted it to look the part.”
Cambridge University student Alice Bebb, who is the opening batswoman for the institution’s women’s cricket team, faced the bowling machine to test it.
“It was like a very tall bowler bowling very close to you and it was quite difficult to predict where it was going to go.
“It spun a lot more than any bowlers I’ve ever faced before.”
She said the gadget did not manage to hit the stumps but it “pitched at a good length and turned a lot – it was a leg spin”.
The Venn bowling machine is to feature at Essex County Cricket Club on Monday as part of an event for the Essex Year of Numbers initiative to inspire a love of learning, with a focus on numeracy.
