Yeah, I was thinking screwdriver too. But dang, that makes the tool very similar to the Capewell tool, patented 10 years earlier.
Capewell's patent doesn't mentioned electrical. From the patent:
Thus it will be seen that in one instrument I have pliers, two open square wrenches, a gas-burner wrench, a pipe-wrench and nail-drawer, a pipe-wrench of large grasp, a box-wrench, hand-vise, and screw-driver, all combined in a simple and useful manner. Or, if desired, the combination tool above described may be modified (see figs. 3 and 4) by constructing the same without the screw-bolt j and projections n n, thus producing a less expensive but at the same time extremely useful implement.
Here's are three variations from by stuff all marked May 16, 1871:
(http://i222.photobucket.com/albums/dd3/buswrench/message-board/capewells-5-16-1871-patent-wrenches.jpg)