Section 14.—CENTRIFUGAL FORCE, APPLICATIONS OF.
[277]. Centrifugal drill. The cross bar A is alternately pressed down and allowed to rise, the strings winding on the spindle alternately in opposite directions by the momentum of the fly-wheel.
| a. | Fly-wheel. Use: to receive and store redundant motive power, and give it off again when the motive power falls below the average. |
| b. | Centrifugal hammer. One or more hammers are loosely jointed to a revolving boss, and strike rapid blows on an anvil fixed in the path of their circumference. See [No. 1915]. |
| c. | Pulverising machines. See [Nos. 253], [254], [255]. |
| d. | Speed governors. See [Section 41]. |
| e. | Cream skimmers have a pan revolving horizontally in which the new milk is poured. The cream travels to the outer edge and runs over into a receiving trough. |
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| f. | Centrifugal dryers. Manlove and Alliott’s, also Robinson’s continuous feed ditto, are examples. |
| g. | Some forms of turbine. On the principle of Hero’s Eolipile, [No. 1696]. |
| h. | Swings. Roundabouts. Various toys. The Gyroscope and tops constructed on its principle. |
| i. | Juggling and other tricks performed with pivoted plates and other common articles. |
| j. | Rattle barrel, or revolving drum, for polishing small castings, &c., by centrifugal motion and mutual friction, similar to [No. 262]. |
| k. | Various machines for grading wheat, grain, and seeds. See [No. 475]. |
| l. | Centrifugal filter for sugar; a modification of the centrifugal drying machine. |
| m. | Centrifugal pumps are forms of fans or turbines (see [Section 90]); Gwynne’s, Schiele’s, Andrews’, and others are examples. |