. Radiography and radio-therapeutics . Fig. 107.—Diagram to illustrate nietliod of using the rotating plate changing device. slower than one plate in two seconds can be got with the present form byworking the plunger D by hand independently of the pendulum. The apparatus is w^ound up by rotating the table by hand. Thependulum is hooked back into position Kl. The patient is adjustedagainst W. The foot lever J is depressed. The pendulum moves fromKl towards K. The spring M passes over N, and the contacts MNlight the pilot lamp. The assistant in U pulls over the single flashlever V, exposing the

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. Radiography and radio-therapeutics . Fig. 107.—Diagram to illustrate nietliod of using the rotating plate changing device. slower than one plate in two seconds can be got with the present form byworking the plunger D by hand independently of the pendulum. The apparatus is w^ound up by rotating the table by hand. Thependulum is hooked back into position Kl. The patient is adjustedagainst W. The foot lever J is depressed. The pendulum moves fromKl towards K. The spring M passes over N, and the contacts MNlight the pilot lamp. The assistant in U pulls over the single flashlever V, exposing the first plate. The spring M leaves the contact N, thepilot lamp goes out. The further movement of the pendulum towards Ktightens the chain I and withdraws the plunger D. The table begins toturn under the pull of cord R and weight. Pendulum now returns fromK towards Kl. The chain I slacks and a spring (not shown) pushes backthe plunger D. The revolution of the table brings one of the stops G againstthe plunger and the table stops with

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Keywords: ., bo, bookauthorknoxrobert18681928, bookcentury1900, bookdecade1910