Abstract: Apparatus for installing a splint adjacent a vertically standing power pole or the like including a boom and driving mechanism for lifting the metallic splint and placing it in proper position and then driving same to the proper depth. The driving mechanism is self contained and need only be supported in driving position and provided with a source of momentum to drive the splint. The driving mechanism includes a hammer or anvil having a depending tongue which serves to support the splint during movement of the splint from the supply to the position adjacent the pole. The tongue also serves as a guide for the hammering means assuring proper driving contact with the splint during the driving process. The driving mechanism will be supported at the outboard end of the boom which may be held in a relatively rigid position by an adjustable deadleg which is pivotally secured to the outboard end of the boom or alternatively may be held rigid by securement to the pole.