An example of a roller bearing for a line shaft. The main casting, A, and cap, C, bolted together, form a spherical seating for the part of the bearing E corresponding to the brasses in a bearing of the usual type. Between the inside of the casting E and the journal are placed rollers held in position relatively to one another by a “squirrel cage” casting, the section of the bars of which are clearly shown in the half sectional elevation. Illustration from 1911 Encyclopædia Britannica, article Bearings.