X is the mirror rotating about the point E, and placed so that (if EB is the horizontal direction in which the rays are to be reflected) (I) the normal CE to the mirror is jointed to BC at C and is equal in length to BE, (2) the rod DBC passes through a slot in a rod ED fixed to, and in the plane of, the mirror.
B is the bob of a pendulum, with its style s passing through a slot in the short arm of a light lever, sop, pivoted at o, and with its outer end resting upon a revolving cylinder covered with smoked paper.
The side of the casing which is next to the seller is pierced centrally by two slots, one a vertical slot through which the weight is read on the drum, and the other a horizontal slot, half of it on each side of the vertical slot, through which the money values of the goods, corresponding to the different rates per lb, are read.
There is much in the newspapers about closing the saloons and dance halls and even taking away the slot machines.
Each slot leads into a separate compartment and the coins are consequently sorted into three classes, light, correct weight and heavy.
After a series of phone calls to Denver and some monstrous lies, Dean managed to finagle a slot on the bike tour, not an easy accomplishment given the short time before the popular event.
On the side of the casing which is next to the buyer there is a vertical slot through which the weight of the goods can be read on the drum.
The rods BC and DB carry two small rods EF, GF jointed at F; at this joint there is a pin which slides in a slot on the rod BH, which is normal to the mirror X.