318 



Models of Machine Elements, Machine Parts and Machines. 



No. .-,iL'7 - 



52279. 1:5. 



52 283. 1 : 6. 



52 284. 1 : 7. 



52 285. 1 : 7. 



52286. 1:5. 



52.279. Simple Excentric, the excentricity adjustable, Figure, of metal 



52.280. - - i d e m, adjustable by toothed wheels 



52.281. Excentric with Slot for versed sine motion 



52.282. Double Excentric with reverse motion, for forward, and backward running of loco- 

 motive, Figure, of metal 



52.283. Cam Disc, Figure, of wood 



52.284. Cam Motion (versed sine motion), Figure 



52.285. Archimedian Spiral Disc, Figure, for uniform reciprocating motion 



52.286. Arc Triangle, Figure, for intermittent motion 



52.287. - - idem, smaller 



52.288. Double Heart-Shaped Slot for uniform motion of rods 



For two up and down strokes during one revolution of the heart-shaped cam. 



Tooth and Worm Gears. 



52.289. Model Table, demonstrating the formation of the Cycloid, the rolling curve of the 

 circle on a straight line 



52.290. -- idem, the formation of the Epicycloid (circle rolled on the circle) 



52.291. -- idem, the formation of the Hypocycloid (circle described in the circle) . . . 



52.292. - - idem, the formation of the Involute, Figure 



8. (1. 



2.15.0 

 7. ().( 

 6. O.o 



5. 0.0 

 0.1S.O 

 2.10.0 

 4. O.o 

 4. O.o 

 2.1. r i.o 

 4.10.0 



16.0 

 L6.0 



16.0 



Ki.O 



Cl. 53-<. :.:i7. :ts7i, 



539, 54". .Ml 



