Although this method is even simpler than the previous one, it is on the other hand all the more subject to ruin; for all the violence and force required for the 3 screws must be withstood by the pinion N and thus simultaneously by the pipe of the screw F. Therefore, if it is not made of very strong posts, the joints must loosen and the entire screw must become damaged. I can therefore advise no one to use such a machine, and for that reason, it is included here more for recognition and warning than for imitation. Because I have known various people before who imagined great profit from it, especially because they assumed the water ran up the screw as it were by itself and required no force other than the friction of the journals, which is however entirely false and can be clearly proven through the machine shown in Part I, Table XVII, Fig. IV.

One finds such inventions among the mechanicians still quite numerous and manifold; but it mostly amounts to the same thing. Therefore, I do not consider it necessary to cite more here, and I would not have had to do even this for the sake of utility, had I not considered it necessary to provide some instruction and knowledge of this, so that an inexperienced person does not seek more in it than is to be found, or build such a work at great expense, for which he can have a better one for half the cost.

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The II. Chapter.

Of Box-Works bucket chain pumps.

Elevation and floor plan for a machine to drive box- or tassel-works with horses.

An ornamental drop-cap 'W' decorated with floral and scrollwork motifs marks the beginning of the chapter.

Because tassel- or pocket- and box-works are two machines which can very often be used with good utility—although one finds the latter sort rarely or almost not at all, while the former are still to be found often at salt-works—I have considered it necessary to provide a clear diagram along with a detailed description of this, specifically:

How these are drawn by horses.

A B Table IV. is a perpendicular spindle or strong beam, which is provided with dense iron journals both at the bottom and at the top. The lower one a stands in a good iron socket a bearing block, which is well chiseled into a thick and solid post. Such a socket must be somewhat wide at the top so that one can pour a quantity of oil or grease into it, so that it always has sufficient lubrication, as can be seen in a somewhat larger figure at b c. This post stands in a somewhat deep pit, which is lined all around with stonework, and the post is held well with the socket so that it cannot shift. The depth of this pit serves so that the spindle A B can be that much longer.