Abstract: A gas-flame heated, self-contained kettle comprises a housing (12); a gas burner (14) contained within the housing (12); a container (16) for the fluid (18) to be heated, positioned within the housing (12) and above the burner(14); and exhaust duct (22) leading from an area (24) above the burner (14), through the container (16), and out of a surface of the housing (12). Excess heat and combustion gases are exhausted in heat-exchanged contact with fluid in the container (16) via the ducts (22), for augmented heating of the fluid with simultaneous protection and insulation of the housing (12).

Abstract: A device for preventing the accidental discharge of a bullet from a firearm, including an attachment adapted to engage the muzzle end of a firearm barrel, a tubular body coaxially attachable with one of its ends to the barrel via the attachment, the bore of the tubular body is provided with an abutment, a stopper fixedly attachable to the other end of the body and having a central bore of a diameter exceeding the calibre of the firearm, an impact disk slidably disposed in the bore of the tubular body, and energy-absorbing and storing element interposed in the bore between the impact disk and the stopper. Upon the discharge of a bullet, the latter pierces the impact disk while transferring some of its kinetic energy to the energy-absorbing and storing element, causing the bullet to disintegrate into small particles escaping through the bore in the stopper.