| 摘要 |
A unique fire-extinguishing device for use on buildings and the like, comprising a rotary drill carried by a housing and having a cutting bit adapted to bore through side walls, roofs, doors, and the like of the building. The housing has a hydraulic fitting for attachment to a standard fire hose, and has an enclosed turbine arranged to power the rotary drill, utilizing the water pressure from the hose. Surrounding the drill shaft is a collar or sleeve connected so as to optionally also receive water from the hose and deliver the same at locations around the shaft and closely adjacent the cutting bit. Handles on the housing enable it to be manipulated in the manner of a power drill whereby the cutting bit together with the discharge end of the collar can be applied to the building structure to drill through the walls and enter the same. The water or other extinguishing liquid can thus be quickly introduced into a burning building structure by the simple act of applying the drill bit to the wall, door or the like, and drilling through the same, using the water not only as the power medium but also as the extinguishing means. The housing has a valve device by which the water can be selectively directed, so as to either fully or only partially power the drill, or else fully or partially bypass the collar. The valve device can also completely shut off the water supply, when this is desired. Drill bit extensions are provided to extend the drilling range so as to enable thick or deep wall or roof sections to be penetrated.
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