Fire pistons, or fire syringes as they were called then, were popular household tools throughout Europe during the early nineteenth century until the safety match was invented in 1844.
12.
Sarcos'suit will incorporate a separate, hydrogen-or petroleum-fired piston at every joint, an approach that aims to avoid the losses that plague distributed-power systems.
13.
These two factors together mean that only a tiny amount of tinder can be lit by a fire piston, but this is sufficient to light other tinder, and then to light a larger fire.
14.
The fire piston is made deliberately narrow so that the force on the piston is not so great as to make it impossible for unaided human strength to compress the air in the cylinder to its fullest extent.
15.
In this case, the flywheel which is mounted on the crankshaft stores energy when torque is exerted on it by a firing piston, and it releases energy to its mechanical loads when no piston is exerting torque on it.
