| 摘要 |
Disclosed is a portable electric power drill having a rotatable cylindrical magazine within the drill housing for storing a tool bit element in each of its plural bores, the magazine being rotatable to bring a selected magazine bore in alignment with the central bore of a chuck assembly at the front of the drill. A flexible cable is slidable by hand between forward and rearward positions to eject a tool bit element from the magazine to the chuck and to return a tool bit from the chuck to the magazine, and the drill includes mechanism to allow the chuck to be tightened and loosened without the use of a chuck key, or without having to otherwise manually grasp the chuck or associated rotatable parts.
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