The bomb had a unique design for its time, and instead of having a fuse or timer, the bomb had numerous pins around it. The pins were filled with mercury fulminate and when the pins sensed contact on any angle with an object, it would immediately trigger the detonation. The bomb was designed by Felice Orsini,[3] an Italian exile living in England,[4] while the casing of the bomb was made by English gunmaker Joseph Taylor.[5] The bomb was designed and created in Birmingham, England[6] but was tested by Taylor in Sheffield and Devon.
After thorough testing, Taylor provided the bomb to Orsini and smuggled them into France disguised as “gas machinery.” Taylor later claimed that he thought the device was a genuine piece of explosive ordnance of a novel design. The bomb was originally created in an attempt to kill Napoleon III in 1858. This act and the design of the bombs may have been inspired by a previous attempt to kill Napoleon I in 1800 with an improvised explosive.
Orsini created 12 bombs for the plot. The plan was that he and three other accomplices would throw four bombs at the Emperor when he emerged from his carriage, but they all missed their targets. However, they did still manage to kill 10 and wound 157. A description of the plot written by a participant was found and said: “My grenade contained 4 pounds of powder. All the conspirators had their respective posts previously assigned to them. Four hand-grenades were to be thrown by Gomez, myself, Orsini, and Pieri, respectively. … throwing my grenade right under the fore part of the carriage, and dropping myself among some dead horses and struggling men, I watched the effects of the explosion. The horses and the driver were instantly killed[.]”
The Orsini bomb was later used in several plots by anarchists, when they could not obtain dynamite.[7] It was also the bomb used in an attack during Gioachino Rossini's William Tell opera at the Liceu Theater in Barcelona in 1893 by anarchist Santiago Salvador; resulting in the death of 20 people and wounding 30, though only one of the bombs detonated.[8] One of the unexploded bombs was preserved at the Barcelona City History Museum (MUHBA) and later leant to the Van Gogh Museum in 2007 for an exhibit on late 19th century Barcelona. (Coincidentally, the Emperor Napoleon III and his wife were on their way to see the same opera when Orsini had made the attempt on their lives over 35 years earlier.)
Davies, Roger. “The Felix Orsini Bomb.”Standing Well Back: IED and EOD Evolutions, 30 Dec. 2012. www.standingwellback.com. Accessed 23 May 2017.
Beale, Joseph H., et al. “Attempt on the Life of Louis Napoleon.” Gay's Standard History of the World's Great Nations ... from the Complete Histories by Charles Knight .., W. Gay and Co., New York, 1884, pp. 883–885.