Earth-boring auger, water-raising gear and a lamp
Devices for finding and drawing water, opening a prison door, and making a large lamp
The page gathers several mechanical devices. A tall tripod frame carries a large screw auger for boring into the earth to find water, and below it a geared machine on a platform raises water in the same way. At the upper left a boxed lamp is captioned as a way to make a fine, large light, while at the right an instrument for opening a prison door from the inside is shown together with a detail of its gripping pincers.
On this page
How to make a fine, large lamp
A small boxed lantern at the upper left is captioned as a way to produce a beautiful and large light.
Instrument for opening a prison from within
At the right a door is fitted with an instrument for opening a prison from the inside, its mechanism worked through the leaf of the door.
Pincers of the opening instrument
A separate detail shows how the pincers (tanaglia) of the prison-opening instrument above are to be shaped.
Auger for boring the earth to find water
The large tripod frame at the centre supports a screw auger driven downward to bore through the ground in search of water.
Geared machine for raising water
Below the auger a platform-mounted machine with a large toothed wheel draws up water, achieving the same effect as the device figured above.