No. M 1 i::::. 



Pile Drivers, Brake Dynamometers, Clock Movements. 



333 



52428. 1:10. 



52430. 1:12. 



52431. 1:3. 



52433. 1:10. 



Clock Movements. 



52,427. Model of a Pendulum Escapement, Figure, with detachable escapement; swing 



1 o second; can also be used as a chronometer 



52,428. Model of a Clock, with complete movement and perforated dial 20 cm diameter, 



Figure 



52,429. - - idem, with electric minute contact, see No. 51,704, for connecting up with an 



electric dial 



52,430. Model of a Clock from an old specimen dating back to the year 1640, Figure, of 

 wood, iron and stone 



A stone is used for the weight; the hook has a circular motion and releases the escape wheel, 

 whose teeth lie in the horizontal plane. 



52,131. Model of an Anchor Escapement, with spring drive, Figure 



52,432. Model of a Cylindrical Escapement . 



52.133. Model of a Turret Clock Movement, Figure (Fr. phys. Techn. I, 2, Fig. 3286) 



s. ,1. 



1. 0. 

 2.10.0 

 3. 0.0 

 0.16.0 



3. 4. 

 3. 10. 

 9. 0.0 



Models of Water- Wheels, Turbines, Valves, Steam Cylinders, ci. STB-, ese, 



Steam Engines, etc. are listed iurther on in this Catalogue. 637 < 502 - 



