Btti,. U. S. p.. F., 190S. 



Plate XCVIII. 



KiG. 17.— Detail of device for extension and universal movement, i, adjustable shaft hanger on 

 house boat; 2, ball joint; 3, square shafting, fastened by set screws into ball joint at left, and 

 also u) i"to sleeve; 4 and 5, screws through flanges of sleeve; 6, oil holes; 7. square shaft which 

 slides in and out of sleeve; 8. shaft hanger upon side float. 



Fig. iS. — Detail of lower portion of the propeller shaft and its socket in floor 

 of car. I, i>rupeller shaft, made of gas pipe; 2. short portion of shaft 

 made of steel, to fit into the socket (6j; 3, four-way pipe coupling; 4, gas 

 pipe to which blades are strapped; 5. strap holding propeller blades; 6 

 and 7. .socket and flange; S, upper disconnected steel portion of the pro- 

 peller shaft; 9, shaft beam; 10. window in bottom of car; 11, base of 

 propeller blade, showing in section the shape. 



