N.I. 



Toothed Gears, Couplings, Engaging and Disengaging Gears. 



327 



52 374. 1 : 6. 



52 376. 1 : 5. 



52 379. 1 .- 6. 



52.376. Engaging Gear with Brake, Figure 



t / B The belt pulley visible to the left of the illustration and connected with the driving mechanism 

 ' is only moved by the crank fitted at the right hand side when the brake is put on, i. e., when the brake 

 | pulley is held fast. So long as the brake remains loose the belt pulley remains at rest consequent on 

 ^ the resistance of the driving machine, and the brake pulley rotates with its driving mechanism. The 

 I action of engaging can be carried out smoothly by carefully manipulating the brake. The brake (con- 

 trary to the illustration) is applied by means of a handwheel and screw; it can therefore be put on 

 i u slowly and be left on at any position affording a more or less tight grip. 



52.377. Engaging Gear for any Direction of Rotation, with spur wheels and pulley stand, 



triple broad belt pulley with crank, moving fork for engaging, and driving belt . . 9. 0. 



52.378. Engaging Gear for engaging in any Direction of Eotation by means of bevel wheels, 

 with pulley stand, triple broad belt pulley with crank, moving fork for engaging, and 



with driving belt + 10. 0. 



The engaging gear consist of three pulleys fitted on the same axis. The no-load pulley is in 

 the centre; one pulley for full load is fixed on the axis, the other pulley being connected to the last by 

 a spur wheel gear in such manner that it always rotates in the opposite direction. According as the 

 belt is thrown on to one or other of the two outer pulleys, the shaft runs in either direction. 



52.379. - - idem, with Intermediate Gearing, in order to obtain another velocity in the 



one direction of rotation . |12. 0. 



s. d. 

 9. 0. 



52.380. Band Brake 



52.381. Wedge Friction Wheels 



8. 0.0 

 3.12.0 



Cl. 569, 3635, 



5777. 



