Importance

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Abstract

The invention is concerned with radiographic apparatus having a radiant capsule which can be run out from a position of rest inside a protective body of gamma-radiation-absorbent material enclosed by a housing through a guide channel which can be brought into alignment with an outlet opening from the housing and hence through the outlet opening and into a tubular guide. The guide channel is in a breech body forming part of the protective body and being movable transversely between the aligned position and a non aligned position. The capsule is fastened to one end of a flexible cable which can be moved through the protective body from the side of the housing opposite to the outlet opening by means of a driving mechanism arranged remotely from the apparatus. The breech body is coupled to the end of the cable carrying the radiant capsule in such a way that by hauling back this end of the cable beyond the position of rest of the radiant capsule the breech body is moved alternately between the aligned and non aligned positions.

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First Claim