Patent Model - Improved Paddle-Wheel
Maker and role
H. Ehrhart, Patentee
Production date
Oct 19 1858
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Object detail
Media/Materials
Wood
Measurements
11 x 9 x 12" (27.9 x 22.9 x 30.5cm)
Description
Ehrhart's patent "consists in a certain system of lever-like arms carrying the floats and combined together and with the wheel to operate substantially as hereinafter described, in combination with fixed guides attached to the vessel, so that the floats shall be kept vertical, or nearly so, and be compelled to move horizontally, or nearly so, in the water, and thus be caused to act with the greatest possible degree of propulsive effect." (Patent Number 21,826)
Collection
Object number
2015.14.246a,b
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