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Updated: June 28, 2025
I have now spoken of the principles applicable to the parts and proportions of catapults. Ballistae are constructed on varying principles to produce an identical result. Some are worked by handspikes and windlasses, some by blocks and pulleys, others by capstans, others again by means of drums.
Then there came the clicking of many windlasses and the strain of many ropes, and to the women and girls who lined the shore these noises were as the beatings of the executioner's hand upon the cell-door of a condemned man. For the first time they seemed to realize what was about to happen.
The labourers took up his shout, and all cried out in one voice, with excitement and exertion: "Let her go! She moves." The pulleys squeaked and creaked, the chains clanked, strained under the heavy weight that suddenly fell upon them; and the labourers, bracing their chests against the handle of the windlasses, roared and tramped heavily.
"State what you regard as necessary as equipment for the proposed expedition," said the general. "Twenty motor boats, each capable of towing several flat-bottomed barges or native canoes, forty mules, a field telegraph, and also a high-powered wireless apparatus, axes, spades, wire cables and drums, windlasses, dynamite for blasting, and provisions for sixty days.
A solid road was first made from the stone to the shore; then brass slips were inserted under the stone to go upon cannon balls of five inches diameter, in metal grooves, by windlasses worked by 400 men every day, 200 fathoms towards the place of destination. The water transport was performed by what are called camels in the dockyards of Petersburgh and Amsterdam.
The sun glistened on the bright brass and nickel parts, and glinted from the gleaming barrels of the quick-firing guns. "That's enough!" Tom called to the men below, who were paying out the ropes from the windlasses. "Hold her there." Tom, Ned, Lieutenant Marbury and Mr. Damon were aboard the captive Mars.
With a power of 25 kilogrammeters it furnishes a current of 40 volts and 7 amperes, which is more than sufficient to run two 50-candle incandescent lamps. The winches are removable, and are not put upon the shaft until the moment they are to be used. The windlasses, as above stated, are permanently connected with the terminals of the dynamos.
They have also made some windlasses with which to haul their boats up hill, notably one at the foot of the cañon. This roadway and windlasses must have cost them many hours of hard labor. Should it ever be necessary, a tramway could be built past the cañon on the east side with no great difficulty.
The cradles were deserted, and the men working on the surface loaded themselves with their tools and made for the high ground, while those at the windlasses worked their hardest to draw up their comrades below. A man coming down from above stopped close to Dick, with a low cry, and stood gazing with a white scared face.
Then setting their lean arms to the windlasses, they drew back the great tree which formed the spring till its tethering place reached the ground, and in the cradle at its head they placed one of the prisoners, bound helplessly, so that he could not throw himself over the side.
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