Richardson's handbook of projection (1927)

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MANAGERS AND PROJECTIONISTS m steel as hard as glass. It may be removed for renewal bytaking out four screws, one in each corner. INSTRUCTION NO. 35.— To remove gate 80P, P. 1, take out the four screws holding the main casting to the posts and then pull the gate away. The hinges are held by dowel pins in addition to the screw. INSTRUCTION NO. 36.— Automatic fire shutter flap 91P, P. 2, is attached to its shaft merely by being bent around it. Its position on the shaft may be adjusted by holding horizontal rack 88P, P. 1, stationary and lifting or lowering, as Plate 3, Figure 288.