. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 292 THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. [Sept. upon standard bearings, in the usual manner, and fitted to the deck of a , with a liorizontal crank-shaft passing through it; this shaft is firmly kfved to tlie whelp-wlieel, and receives motion from two reciprocating steam cylinders, in connection with double cranks, on tlie driving-sliaft; each arm of the wheel wliich is employed for the purpose of receiving the whelp, is fiirnislied with a slot, diverging from t
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 292 THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. [Sept. upon standard bearings, in the usual manner, and fitted to the deck of a , with a liorizontal crank-shaft passing through it; this shaft is firmly kfved to tlie whelp-wlieel, and receives motion from two reciprocating steam cylinders, in connection with double cranks, on tlie driving-sliaft; each arm of the wheel wliich is employed for the purpose of receiving the whelp, is fiirnislied with a slot, diverging from tlie centre to the peripliery of the same, and forming in all six radial guides or channels, in which six adjusting whelps, c,c, c, are to be fitted, and placed at equal distances from the central driving-shatt, and are made fast by wedges, which can be withdrawn at pleasure, and ahow the circumferential or radial distance of tlie whelps to be increased or diminished, producing thereby corresponding rales ol motion when required. By this arrangement the wlielps form a reel, on which the coil of galvanised wire-rope or chain, d, is w-ound, and so grip the warping-line, which is fixed firmly at each end to some stationarv object or holdfast upon the land or water; so that when the wheel, a, is caused to rotate, the vessel, by reason of the rope aforesaid, alternately embracing and leaving the wh^dps formiig tie reel, is propelled backwards or forwards, by motion being given to tlie wheel carrying the whelps in the required direction; c,e, are horizon- tal rollers mounted in cast iron standards, fore and aft ol the warping- wbeel a, and serve the double purposfc of guiding the warp-line and keeping it tight on the reel; /,/, are two pairs of vertical guide- rollers, mounted on bracket bearings. On the axle of each ot the lower horizontal rollers,e,f, a :, is mounted, which gears into others on the horizontal shaft h,h ; the pair of bevelled wheels, g,g, at the forward
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