Abstract: A multi-tubed diving snorkel, comprising first and second elongated air tubes positioned side-by-side between an upper end and a lower end of the snorkel. A first valve device is positioned at the upper end of the snorkel for permitting air to flow only in a first direction through a first one of the two tubes and only in a second opposite direction through the second of the two tubes. A second valve device is positioned at the lower end of a snorkel adjacent a mouthpiece for permitting air to flow only in the first direction through the first tube and only in the second direction through the second tube. The side-by-side configuration of the tubes is more flexible than concentric tubes and the use of a valve device adjacent the mouthpiece reduces unwanted mixing of exhaust and intake gases.

Abstract: A burglar bar breaking tool comprises a solid block or tool head of relatively heavy metal having at least one slot extending lengthwise along part of its peripheral edge for receiving the end of a prying tool, and a recess extending inwardly from the peripheral edge of the block for engagement transversely over a burglar bar so that a prying tool or handle shaft engaged in the slot can be used to apply twisting force to the burglar bar. In one embodiment, the block periphery is four-sided and has sleeves welded to each of its four sides each defining a slot for receiving a prying tool. In another embodiment, the tool head is permanently secured to one end of a handle shaft.