NEW GARRISON CARRIAGES. 
341 
In (1) a telescopic shaft, with bevel wheel at each end, placed 
beneath the floor of the casemate, will receive the motion from a fixed 
shaft from the engine, through the intervention of a vertical pivot (also 
under the floor) with bevel wheel, and communicate it to a short 
vertical shaft projecting downwards from the platform towards the 
front, which, as the latter is traversed, moves along a slot cut in the 
floor. From the vertical shaft the motion is conveyed to the gear of 
the platform by a shaft wibhin the latter. The shaft conveying the 
power to the platform being telescopic and working round a fixed 
pivot, allows of its adapting itself to the motion of the platform when 
traversed, though that motion is about a point in the embrasure. 
In (2) a flexible tube will convey the pressure from a fixed tube 
under the floor of the casemate, communicating with the accumulator, 
to a Brotherhood engine* attached to the rear of the platform. This 
engine, by the pressure communicated to it, will directly drive a short 
shaft, which will convey the motion to the gear of the platform. A 
second flexible tube will carry off the waste water from the engine. 
In both (1) and (2) suitable clutches will be provided, so that all or 
any particular portion of the platform gear may be instantaneously 
disconnected from the primary power; while, as already mentioned, 
each part can be worked by hand. 
December, 1875. 
# The Brotherhood engine is a patent three-cylinder engine for producing motion directly from 
steam or water pressure. 
