Hydraulic Bottle/Whiskey Jack Restoration HD

Welcome back, ladies and gentlemen! I got this hydraulic bottle jack along with 3 other bottle jacks from the metal recycling yard. I thought this one would be a great addition to the blue Vintage Benchtop Metal Shear I recently restored. This jack did not have a label so I am unsure about the capacity, I suspect it is a 32-tonne or a 50-tonne jack when compared to other jacks by the physical size. With that said, I hope you enjoy the video. If you have any suggestions for improvement, or compliments share them below! Some history on hydraulic jacks. In 1838 William Joseph Curtis filed a British patent for a hydraulic jack. In 1851, inventor Richard Dudgeon was granted a patent for a "portable hydraulic press" - the hydraulic jack, a jack which proved to be vastly superior to the screw jacks in use at the time. Hydraulic jacks are typically used for shop work, rather than as an emergency jack to be carried with the vehicle. The use of jacks not designed for a specific vehicle requires more than the usual care in selecting ground conditions, the jacking point on a vehicle, and ensuring stability when the jack is extended. Hydraulic jacks are often used to lift elevators in low and medium-rise buildings. A hydraulic jack uses a liquid, which is incompressible, that is forced into a cylinder by a pump plunger. Oil is used since it is self-lubricating and stable. When the plunger pulls back, it draws oil out of the reservoir through a suction check valve into the pump chamber. When the plunger moves forward, it pushes the oil through a discharge check valve into the cylinder. The suction valve ball is within the chamber and opens with each draw of the plunger. The discharge valve ball is outside the chamber and opens when the oil is pushed into the cylinder. At this point, the suction ball within the chamber is forced shut and oil pressure builds in the cylinder. A bottle jack or whiskey jack is a jack that resembles a bottle in shape, having a cylindrical body and a neck. Within is a vertical lifting ram with a support pad of some kind fixed to the top. The jack may be hydraulic or work by screw action. In the hydraulic version, the hydraulic ram emerges from the body vertically by hydraulic pressure provided by a pump either on the baseplate or at a remote location via a pressure hose. With a single-action piston, the lift range is somewhat limited, so its use for lifting vehicles is limited to those with relatively high clearance. For lifting structures such as houses, the hydraulic interconnection of multiple vertical jacks through valves enables the even distribution of forces while enabling close control of the lift. The screw version of the bottle jack works by turning a large nut running on the threaded vertical ram at the neck of the body. The nut has gear teeth and is generally turned by a bevel gear spotted to the body, the bevel gear being turned manually by a jack handle fitting into a square socket. The ram may have a second sc