‹‹‹ Vitr. 10.8.3 | Table of Contents | Vitr. 10.8.5 ›››
4These rules have iron jacks attached to them, and being united to the keys, when those are touched they move the rules. Over the table there are holes through which the wind passes into the pipes. Rings are fixed in the rules, for the reception of the feet of the organ-pipes. From the barrels run pipes joined to the neck of the wind-chest, which communicate with the holes in the chest, in which pipes are closely fitted valves; these, when the chest is supplied with wind, serve to close their orifices, and prevent its escape.
4These sliders have iron jacks fixed to them, and connected with the keys, and the keys, when touched, make the sliders move regularly. To the upper surface of the openings in the board, where the wind finds egress from the channels, rings are soldered, and into them the reeds of all the organ pipes are inserted. From the cylinders there are connecting pipes attached to the neck of the regulator, and directed towards the ventholes in the windchest. In the pipes are valves, turned on a lathe, and set (where the pipes are connected with the cylinders). When the windchest has received the air, these valves will stop up the openings, and prevent the wind from coming back again.