No. ~.~2i. 



Toothed Gearing. 



321 



52 314. 1 : 4. 



52313. 1:6. 



52 317. 1 : 7. 



52 322. 1 : 9. 



52 324. 1 : 5. 



52 323. 1 : 4. 



52,315. Mangle Gear with external teeth: a movable model and accurate constructional 



drawing of the gearing 



52.316. Mangle Gear, rectangular: Crown Wheel with lantern wheels, Figure, of metal 



52.317. Mangle Gear with double lantern wheel drive and internal contact with 4 -toothed 



channel cross-piece, Figure 



t The transmission of motion of this toothed gearing is very smooth and uniform. The ratio of 



t | gearing is 1:2, the lantern wheels being provided with small rollers. 



52,318. - - i d e m, with 3-wheeled drive and 6-toothed channel cross-piece 



52 319. Two Cam-shaped Cogs with Excentric Axes for periodic motions 



52.320. Two Toothed Wheels with Excentric Axes for alternately producing accelerated and 

 retarded motions 



52.321. Two Cam-shaped Toothed Wheels, of different shape 





52.322. Two Congruent Elliptical Toothed Wheels, Figure . 



The model shows the conversion of a uniform rotation into a periodically varying one. For 

 facilitating the drive a spur gearing is fitted. The axes of rotation of the elliptical wheel each pass 

 through a focus of the ellipses. 



52.323. Two Toothed Wheels shaped according to the logarithmic spiral, Figure . . . . 

 ">2,324. Mitre Gearing, small, Figure 



s. d. 

 2.14.0 



5. 0.0 

 4. 0. 



5.10.0 

 7. 10. 



6. 0. 

 10. 0.0 



6. 0.0 



10. 0.0 



1. 0. 



Cl. 547, 527, 549, 



MH - 



6355, 3632. 



01 

 21 



