316 



Models of Machine Elements, Machine Parts and Machines. 



No. .V.'26-> 



52232. 1:12. 



52 263. 1 : 6. 



52 264. 1 : 6. 



52 266. 1 : 7. 



52.262. Peaucellier's Guide, Figure, for transforming a circular into a straight motion 



52.263. Watt's Parallelogramm, Figure, of wood and metal 



52.264. Beam for Steam Engines with counter-guide, Figure 



52.265. Beam without Rotating Axis 



52.266. Stephenson's Link, Figure, with section through a steam engine cylinder with 

 slide valve, of iron (Gan.-Man. Fig. 569) 



52.267. Gooch's Link, of iron 



52.268. Model Table for demonstrating the Static Equilibrium Conditions of the Centrifugal 

 Governor, as suggested by Prof. Eugen Meyer, Figure (Ztschr. d. V. d. I., 1909, 

 pp. 1301 et seq., No. 2, and text-sheet 13, Figs. 4 7) 



The model shows half of a centrifugal governor. At the points of support of the pendulum a, 

 the rod b and the bush c forces can be applied instead of the bearings. The model serves for deter- 

 mining the quantity of that horizontally directed force which maintains the equilibrium in the forces Q 

 (half the weight of the socket) and G (weight of the governor balls), this force C acting on the centre 

 of the balls. 



52.269. Conical Crank Rectangle, coupled conical cranks 



52. 2 70. Conical Thrust Crank Chain, connecting rod and guides running on section of cylinder 



52.271. Rectangular Cross Sprocket Chain, simultaneous motion of a sphere about two axes 



52.272. Cardan's Coupling for transmitting a rotary motion at any angle, of metal . . . 

 r>i>, 273. - - idem, with graduations on the axes and on the base-plate 



The angular velocities of the two axes are unequal. In order to show the lead and lag of the 

 driven shaft, in front of and behind the driving shaft a dial graduated in degree.- is fastened in front 

 of one each fixed pointer, and graduations are put on the base-plate on which the angular position of 

 the two nlative axes can he read off. The degree of lead or lag of the axes relatively to each other 

 depends on the angle which the directions of the axes form with each other. If ..< and ..>, are the 

 anghs of rotation measured from I lie same position of rest, of the driving and driven shafts respeo 



ts a>i 

 tively, and the angle of direction of both, then ' DOSa. 



s. d. 

 6. 0.0 



1.16.0 

 4. O.(t 

 4. 0.0 



12. 0.0 

 12. 0.0 



6.15.0 



(i. 0.0 

 6. 0.0 



0. 0.0 



1. :>.(> 



2. 10.0 



Models of Strain Kngines and Steam Knginc Tails. 

 see section on Heat. 



Cl. 57N7. r.:n, 

 11:11. :.3a 



