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The felt washer of the viscous damping device should be kept lubricated as described in section 92.

97. Types PS-5, PS-6, and PS-8 Sound Heads.-These sound heads are used with the Type PG-10 equipment. The PS-5 is used on Powers projectors, the PS-6 is used on Motiograph projectors, and the PS-8 is used on Simplex projectors. The film side of the PS-5 is shown in Figure 64. The film side of these sound heads are very similar to the PS-1 sound head. The main points of difference are as follows:-these sound heads have no illuminator in the optical system, and the sound gate is different in that the light aperture is large and will not clog. The adjustments described in sections 89, 90 and 92 for the PS-1 also hold for the PS-5, 6, and 8 sound heads.

98. Lubrication of the PS-5, PS-6, and PS-8 Sound Heads.-The lubrication of the film side of these sound heads is the same as the PS-1.

The lubrication of the drive side of the PS-8 is the same as described for the PS-1 sound head.

The lubrication points of the drive side of the PS-6 sound head are as follows:one oil hole and one selfclosing oil cup on the shaft of the chain driven sprocket, one oil hole on the gear shaft directly below the chain driven sprocket wheel, one oil cup on the gear shaft below and to right of the chain driven sprocket, two oil holes, one near each end of the turntable flexible drive shaft. These points should be oiled once a day with a good grade of light machine oil.

The lubrication points of the drive side of the PS-5 sound head are as follows:An oil cup on the gear shaft directly above the chain driven sprocket, two oil holes on the shaft of the chain driven sprocket, and two oil holes, one near each end of the flexible drive shaft. These points should be oiled once a day with a good grade of light machine oil.

The PS-5, PS-6, and PS-8 sound beads have a viscous damping device, the lubrication of which is described in section 92.

The chains should be lubricated once a week as described in section 95.

The oiling of the projector drive motors is described in section 31.

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Chapter Eight Pages
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Chapter
[1] [2] [3] [4] [5] [6] [7] [8] [9]
[10] [11] [12] [13] [14] [15]

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