spake

A spake is a small rail-mounted cage or carriage designed to lower and raise workers into and out of deep mine shafts, particularly in coal mines. Unlike larger ore cars that carry extracted material, a spake is built specifically for human transport, with sides constructed from wooden or metal slats spaced to allow ventilation while preventing workers from falling through during the journey between surface and working level.

The spake hangs from a wire rope or chain attached to a winding engine at the pit head. As the engine spools or releases cable, the cage descends or ascends the shaft, often traveling at 3 to 4 feet per second. Most speakes are rectangular in form and measure roughly 4 feet wide by 6 feet long by 5 feet tall, sized to hold between 8 and 12 workers per descent, though capacity varied by colliery and shaft depth.

The term spake appears to derive from the radial bracing of the cage, which resembles the spokes of a wheel, though usage varies by region and era. In some British coalfields, workers referred to identical equipment as a cage or kibble, while the Americans often used skip. The spake sits at the intersection of two mining traditions: the cage for personnel and the skip for bulk material, though the spake's primary function remained human transport.

Mechanical failure in a spake presented serious hazards. Corrosion of the rope from acidic mine water, metal fatigue in the framework from repeated shock loads, and human error by the winding engine operator all contributed to cage accidents. Many collieries implemented strict inspection regimes, including magnetic testing of rope fiber and regular greasing of attachment points, to manage these risks.

The spake became less common after the 1950s as electric cage systems with automated braking and modern safety interlocks replaced older steam and hand-powered winding engines. Deep mines in continental Europe and beyond adopted steel-framed personnel cages with emergency counterweights and load-sensing devices, rendering the simpler spake obsolete. Today the spake survives mainly as a historical artifact in heritage mining sites and colliery museums.