During his lifetime cannons were usually used at home rather than at the battlefield. The reason that they were mainly used at home because the cannon itself was way too heavy and reloading took too much time. You wouldn't want to give your enemy a chance to kill you! The designed featured adjustable height and it would be front loaded. It also featured three thin cannons. It would be reloaded after three shots. This was different than the traditional one shot reloading.