XI. MODELS, ETC. 465 



Pendulum governor applied to water-wheel. 



Siemens' chronometric governor. 



The forge bellows. 



Blowing fan, with gauge. 



Guibal's ventilating fan. 



Centrifugal pump. 



Turbine. 



Water-wheel. 



Hydraulic press. 



The accumulator. 



Pump worked by -water pressure. 



Hydraulic cranes (5). 



Water pressure engine (as for crane). 



Press for squirting metals. 



2219. Mr. Anderson's Educational Diagrams on Me- 

 chanics. 



Levers (12). 

 Wheel and axle (18). 

 Pulley (8). 

 Inclined plane (8). 

 Wedge (8). 

 Screw (10). 

 Dynamometers (3). 

 Toggle joint. 

 Virtual velocities. 

 Hydraulic press. 

 Elastic cords. 

 Pumps (2). 



2220. Model to show the Conversion of Circular into 

 Reciprocating Motion, in one direction only. 



2221. Model to show the Conversion of Circular into 

 Reciprocating Motion, in two perpendicular directions. 



2222. Model to show Inequality of Motion, when a crank 

 and connecting rod are used ; also that the linear motion may be 

 doubled when the connecting rod is equal in length to the crank. 



2223. Diagram Model, with parts to illustrate the movements 

 when the connecting rod is equal to the crank. Straight line 

 motion. 



2224. Three Models of an Eccentric Circle. 



2225. Model to show Conversion of Circular into Re- 

 ciprocating Motion, with intervals of rest. 



39508. G g 



