Piercer

A piercer comprising a frame including an upper frame section and a lower frame section of given lengths and which are disposed in parallel opposing relationship with a given difference in elevation therebetween, a channel plate extending uprightly from the free end of the upper frame section to a given height and including an associated guide plate or guide rail extending lengthwise thereof, a slider disposed to be movable up and down along the guide plate or the guide rail and fixedly carrying a rotary drill with its drill bit directed downward, a reflector disposed slightly below the tip of the drill bit, a lamp disposed in a wall of the channel plate for directing light toward the reflector so as to be reflected thereby to project a point mark of light to a location which is vertically and directly below the tip of the drill bit, the reflector being disposed to be movable away from the path of movement of the drill bit during the upward and downward movement of the slider, and an anti-deflection holder for the drill bit which is located slightly above the location of the tip of the drill bit, the anti-deflection holder being adapted to move down together with the rotary drill, to remain stationary on a stack of cloths as the drill bit pierces through the stack of cloths and then moves upward together with the rotary drill during the upward movement thereof.