...with an overhead double-cranked iron, upon which the millstone Z is fastened and rotates with it. The corn or grain is poured into the box B, and the millstone A. E. can be adjusted upwards and downwards.

The IV. Figure.

Of a Hand Mill.

This is another type of hand mill. It is somewhat more extensive and also more expensive than the previous one, but it can be easily turned and governed by two people with the help of two flywheels E. M. One makes a spindle-nut L in the middle of the shaft of the two flywheels, which engages with its spindles—which should be made of good iron or strong wood—into a large spur wheel N. This drives the same around with force, which then further engages with its wheel, toothed on the side, into the latter spindle-nut O. It drives this around together with the millstone P, turns the fruit or grain—poured into the box Q—into flour, and thus further pours the same into the flour box R.

The V. Figure.

Of a Hand Mill for Copperplate Printing Black.

This hand mill is useful for many things, but in particular, it can be used quite effectively for the grinding of lampblack original: "Weinrüssen", which is used to make copperplate printing black. One can easily arrange it on a wide bench, which should be of fairly strong wood: namely, one makes a strong cranked iron at A (this can also well be of wood), but it should have a spindle-nut B, whose spindles grip the horizontal wheel C. At its shaft, another spindle-nut, which grips the teeth of wheel C, finally leads not only the same but also, through it, the spindle-nut F together with the millstone G around. Through the stone H, it drives out the material to be ground in I.

The VI. Figure.

Of a Hand Mill.

Through this hand mill, one can quickly accomplish something that needs to be crushed. It serves especially for making powder in fortresses or mountain houses, where one cannot have water or other facilities. This hand mill is easily operated by one person with a draw-arm A, in that a sliding iron B is attached to the mentioned arm, which should movably surround the cranked iron C on the upright shaft D. Through its help, the upright shaft D is driven around; in its spindle-nut E, another wheel, toothed on the side, F should further engage with its pegs, so that it is driven by the mentioned nut together with its shaft G, and with its arms H can lift the pestles I and let them fall again.

Note: For easier pulling of the whole mechanism, one can arrange one or two flywheels K L, which is hereby left to the experienced master craftsman and artist, according to the nature of the things.

The VII. Figure.

Another Manner of a Hand Mill.

Is likewise a hand mill, and can be made to any desired size. It has a crank and cranked arm as a handle, which is designated with A, and the cam wheel B is attached and fixed to its shaft. Such a cam wheel can also be divided into as many teeth as one desires, according to which the lantern gear C must then also be aligned; and the same should be inserted squarely for better fastening of the rod G. The upper body H, which is [turned] by the...