Patent for an airship that is equipped with gas bags to control the ascent and descent of the airship and make it float in case of landing in the water.

Patent for a new and improved spring motor. This design consists in "[t]he combination of a motor with a drum attached to one of its shafts . . . the spring which bears upon the stop and which is rigidly secured to the frame at its outer end, the stop being pivoted . . . [and] a rod provided with a cone bearing laterally against said spring for increasing or decreasing the friction of the spring against the drum" (lines 73-84).