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It incorporated a sub frame on which the engine and gearbox were mounted. As for later Dennis fire engines, the water pump was a centrifugal pump, rather than the piston pumps used by other makers. This was more complex to build than the long-established piston pumps, but had advantages in operation.
An early device used to squirt water onto a fire is a squirt or fire syringe. Hand squirts and hand pumps are noted before Ctesibius of Alexandria invented the first fire pump circa the 2nd century B.C., [3] and an example of a force-pump possibly used for a fire-engine is mentioned by Heron of Alexandria.
The patent had no illustrations or even description, but in 1702 Savery described the machine in his book The Miner's Friend; or, An Engine to Raise Water by Fire, [4] in which he claimed that it could pump water out of mines. Schematic of Savery engine operation. The engine sucks water in with valves a and c closed, and valves b and d open.
The Green Goddess is the colloquial name for the RLHZ Self Propelled Pump manufactured by Bedford Vehicles, a fire engine used originally by the Auxiliary Fire Service (AFS), and latterly held in reserve by the Home Office until 2004, and available when required to deal with exceptional events, including being operated by the British Armed Forces during fire-fighters’ strikes (1977 and 2002).
1916 N-Type fire engine Jezebel 1953 F8 Fire Water Tender Hong Kong Fire Services Department Dennis Sabre fire engine. Dennis fire engines were noted, from their 1908 outset, for their use of a Gwynnes made centrifugal pump or 'turbine' as a water pump, rather than the piston pumps used by other makers. This was more complex to build than the ...
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A fire engine or fire truck (also spelled firetruck) is a vehicle, usually a specially-designed or modified truck, that functions as a firefighting apparatus. The primary purposes of a fire engine include transporting firefighters and water to an incident as well as carrying equipment for firefighting operations in a fire drill.
The Dennis DF series was a range of heavy-duty fire engine chassis produced by Hestair Dennis (later Dennis Specialist Vehicles) from 1979 to the early 1990s.Based on the Dennis RS/SS series, the DF has a 16,260 kg (35,850 lb) gross vehicle weight, and was produced primarily as a base for turntable ladder appliances or tanker units carrying either foam or water.