Driving Apparatus
The Friction Brake.—This consists of a steel disc A, Fig. 45, about 21/2 inches diameter and 3/8 inch or 1/2 inch wide on the face, secured to the main shaft of the driving motor. The arm H, pivoted at C, carries at one end the curved block B, which is faced with a pad of tow F. The other extremity is pivoted to the steel rod P, which slides
The Clutch.—The details of this will be seen from Figs. 46 and 47. It consists of a steel shaft coned at both ends running between two countersunk bearings, one of which is adjustable. This shaft carries the two portions of the clutch A and B, the portion A being a fixture on the shaft, and the portion B running free upon it. The portion B is a gun-metal casting bored to run accurately upon the steel shaft. A soft iron annular ring is fastened to the face.
E, spindle; R, bobbins; P, iron cores; D, copper rings; T, brushes; N, back plate; V, front plate; J, gearing; S, spring; H, collar; Z, iron ring; F, fixed bearing; C, insulating bush.
The portion A consists of a gun-metal casting