Miner's iron wedge
Coal splitting wedge.
Large wooden wedge for manoeuvring stone blocks
Mason's wedge (iron)
1874
Coal wedge.
circa 1750s
Four wooden wedges, used by Joseph Bramah in his workshop
Coal splitting wedge.
Curved rectangular wedge
Miner's wedge 2lb.
Coal splitting wedge.
Patent wedge for coal, mkd. IV-99
Slider wedge
Patent wedge for coal, mkd. IV-22 D.S.&.A.
Coal wedge
circa 1740