. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. IS47.] THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. 89 number of swing floats, which oppn one way, to admit of little resistance to tlie return stroke. These propellers, whicli move in a line vertical with the rudder of the vessel or boat, are thrust or driven, by the action of the steam pistuu, forward in the direction with the line of motion of the vessel or boat; the mode of reversing being the alteration in the direction of the float hoards to the required direction. The pa
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. IS47.] THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. 89 number of swing floats, which oppn one way, to admit of little resistance to tlie return stroke. These propellers, whicli move in a line vertical with the rudder of the vessel or boat, are thrust or driven, by the action of the steam pistuu, forward in the direction with the line of motion of the vessel or boat; the mode of reversing being the alteration in the direction of the float hoards to the required direction. The patentee claims under the first head of his speciGcation the mode of, or apparatus for, propelling boats or vessels from the stern by suitable means hereinafter described. The second part of the specification relates to the mode of an apparatus for i}ropellinf: vessels or boats by the means of circulatory revolving pad- dles. In constructing flo,it wheels according to this invention, instead of applying float boaids to hollow frame â wheels, the patentee attaches them to cyliadric drums having suitable recesses formed in their peripheries for their reception. Fig. 1 represents an end view of the improved wheel, and gg. 2 a sectional side elevation taken throuph the dotted lines, A B. no, â s the cylindrical drum which may be of metal or any other light sub- stance, such as cork, wood, or otherwise, i/», are float motion rods, at- tached at right angles by the hinge or joint rf, to the float boards c c. e e, are small friction rollers, which turn on centres at the ends of the motion rods h b, for the purpose of directing the position of the float boards ; ff g, are slottled bridles or guides, in which the friction rollers ee travel ; these, rollers, when moving concentric with the drum an, remain stationary, but when they diverge into the eccentric channel li It, they cause the free use of the float boards to move outwards, till, on arriving at a point coincident with a verti
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