On top of the air cylinder a integral dovetail rail with shape connection drillings for one or more recoil lugs provides for fixing a match diopter or mounting components for telescopic sights.
32.
It is used when a longer-duration supply of breathing gas is needed, such as in mine rescue and in long tunnels, and going through passages too narrow for a large open-circuit air cylinder.
33.
In 1933, Le Prieur replaced the Fernez goggles, noseclip and valve by a full face mask, directly supplied from the air cylinder, which balanced the pressure in the mask with the external water pressure.
34.
To pass the test, the Diver will have to hold his breath throughout this incident and remedy the situation by getting back his air source and donning the air cylinder in the proper manner.
35.
Like the beam engines, the main force of the piston is transmitted to the air cylinder by a purely reciprocating action and the flywheels are there merely to smooth the action of the engine.
36.
Determined to dive deeper, stay down longer and see more, Cousteau and his friends began tinkering with homemade snorkel hoses, insulated body-suits and portable breathing devices based on the recent invention of the compressed air cylinder.
37.
The duration was limited by the use of compressed air cylinders rather than compressors ( The US and foreign patent issued to Mark Cummins also included all types of air compressors and inert gas generators ).
38.
The V-1 was transformed into the " Reichenberg " by adding a small, cramped cockpit at the point of the fuselage that was immediately ahead of the pulsejet's intake, where the standard V-1's compressed-air cylinders were fitted.
39.
There is a large bicycle chain arrangement on the right trail for this, and a compressed air cylinder, charged by the gun firing, is used to bring the barrel forward when the gun is brought back into action.
40.
An open-circuit rescue or firefighter SCBA has a fullface mask, regulator, air cylinder, cylinder pressure gauge, remote pressure gauge ( sometimes with an integrated PASS device ), and a harness with adjustable shoulder straps and waist belt which lets it be worn on the back.
