448 SEC. 12. APPLIED MECHANICS. 



1928h. Model of Wheel (probably for grinding). With 

 sliding axle. 



19281. Fragment of Model (probably a pump bucket). 



1928k. Models on a Stand, of four trussed beams, probably 

 used experimentally for testing the strength of different methods of 

 trussing. 



19281. Fragment of a Model of a Frame for a Ma- 

 chine. 



1928m. Fragment of a Frame. 



1928n. Model of a Horse Mill, with roller and trough, 

 apparently designed for crushing material. 



1928o. Model of a Train of Wheels. 



1928p, Model of Beam and two connecting Bods with 

 universal motion at their upper ends, and connected to transverse 

 hinged links at their lower ends. 



1928q. Model of Beam Pumping Engine, single acting 

 and condensing, worked by tappet valve motion. 



1928r. Model of double acting Beam Condensing En- 

 gine, conical valves worked by eccentric. 



1928r. Model of inverted Cylinder direct-acting 

 Pumping Engine, with tappet valve motion. 



1928s. Sectional Model of Beam Engine, worked by 

 eccentric and hollow valve. 



1928t. Sectional Model of Engine, with shifting eccentric 

 for altering valve. 



1928u. Model of a Pair of Tilt Hammers, alongside each 

 other. Two beams and connecting rods, with cranked pins at an 

 angle to each other, and one of the wheels provided with a 

 balance weight. 



(NOTE. Part of the above model missing.) 



1928v. Fragment of a Model with part of Sim and planet 

 motion. 



1928w. Fragment of a Model with Sun and planet motion 

 and weighted disc. 



192 8x. Fragment, an arch head. 

 1928y. Model of a Water Wheel. 



