Abstract: An apparatus for charging a metallic canister having a filler opening therein with a gas under pressure and then sealing the opening to provide a closed, pressurized canister including means having a guide passageway therethrough, engageable with the canister in sealing engagement with the guide passageway communicating with the filler opening of the canister, means for conveying a gas under pressure to the guide passageway of the sealing means when the sealing means is disposed in sealing engagement with the canister, rotary means for dispensing a welding ball for delivery through the sealing means to be deposited on the canister across the filler opening therein and means for fusing the welding ball when positioned on the canister to close the filler opening in the canister.

Abstract: An apparatus for charging a closed metallic canister with a gas under pressure comprising means for forming a gas filling opening in the canister, and dispensing means for sequentially injecting a high pressure gas through the gas filling opening to charge the canister, and depositing and fusing a fusible body in the gas filling opening, while continuing to inject gas into the canister and utilize the force of the gas to urge the dispensing means into sealing engagement with the canister being charged.