| 摘要 |
Device for insertion and withdrawal of an electrically connected instrument in a deep channel, comprising a flexible cable-like member, one end of said member to be inserted being connected to the instrument and the other end of said member being permanently fixed and permanently electrically connected, and means for inserting said member and the associated instrument into said deep channel, a collecting means arranged in connection with the other end of the cable-like member in which said member can be deposited in the form of a helix when withdrawing the instrument from the channel, and a feeding means for insertion into and withdrawal from the channel of said cable-like member, said feeding means being arranged in such a manner as to permit rotation of the cable-like member during the feeding thereof in view of the permanent attachment of its said other end. |
