Broken Timber on the Cataract

Cold lard and tallow usually kept the five-foot winch drum quiet, but this morning the iron spool was whistling like a steam vent under pressure Garret Vane could not account for. Standing on the fifth-floor windlass deck of Callow Arch, his scarred hands clamped around a brass oiler, Garret wanted nothing more than to grease the spindle bearing before the noon mules reached the western timber bridge. But the braided hemp cable running down through the floor slot had turned rigid as cured oak, humming with a wet, low vibration that traveled straight up from the bedrock needle sixty feet below.

He leaned over the oil hole and wiped away a smear of black crust with his thumb. The hemp line should have carried only sixty pounds of balancing weight—just enough slack to keep the western counterweight from swinging against the shaft masonry. Instead, the strands were weeping yellow river froth. The water had climbed the cordage against gravity, soaking through forty fathoms of hemp to bubble around the iron hub.

Garret dropped the oiler into his leather apron and crossed the windlass floor with the hitching limp he had carried since a dropped counterweight crushed his left ankle six summers back. He stepped up to the western machicolation slot and peered down through the stone throat of the floor.

Sixty feet down, the Varrow Gorge was not running its usual slate-gray course. The river had swollen into a boiling wall of brown froth, tearing branches and yellow foam along the rock needle that anchored Callow Arch. The cataract roared with a sustained iron grind that vibrated inside his teeth. Halfway across the western span, twenty freight mules and three teamsters in greased hide coats were huddled against the timber handrails. The lead wagon had thrown an axle, its splintered pine wheel wedged deep into the deck planking.

A teamster was shouting into the wind, waving a hickory switch over the mules. His voice never made the climb to the fifth floor. It was drowned out by the cataract, which was already licking the underside of the main stringers.

A wet crack echoed through the windlass room.

It did not come from the tower walls. Down on the river span, the central timber pier buckled three feet downstream. The heavy oak cross-ties bowed, their wrought-iron spikes tearing out of the mortises with the screech of ripping sheet iron. For two heartbeats, the western bridge hung crooked over the gorge like a broken ladder. Then the river drove a three-ton battering ram of floating pine logs directly into the weakened trestle.

The entire span sheared off at the rock abutment.

Garret did not blink. The deck tilted sideways, dumping twenty mules, two wagons, and three men into the foaming brown broth sixty feet below. The cataract swallowed them before the wagons even struck the surface. White spray erupted thirty feet into the air, yellowed with crushed timber and torn canvas, and then the gorge swept clean. Nothing came back up except splinters and two floating pack-hampers that shattered against the limestone teeth downstream.

On the fifth floor, the windlass went mad.

With thirty tons of timber and counterweight dropped into the abyss, the tension on the remaining cable snapped. The five-foot iron drum kicked backward. Its teeth screeched against the frame as the cable tail began whipping upward through the floor opening like a striking adder.

If the drum ran free, the bronze bushings would melt within ten turns and the counterpoise would rip through the oak ceiling joists, dropping the whole roof down onto his head.

Garret lunged across the flagstones. The spinning spoke handles had become a whirling disk of oak, whistling loud enough to split ears. Putting a hand near those handles would pulp his fingers to the bone.

He threw his right boot—the good one, armored with a double layer of stiff oxhide—straight down onto the tallow-soaked friction lever.

The leather brake shoe slammed into the drum flange. Smoke boiled out instantly, smelling of burnt sheep fat and scorched hide. The iron drum shuddered, screaming a high, tearing note, but the sheer inertia of the runaway spool dragged the friction band with it, burning through the grease down to raw iron. The lever kicked hard, driving a shock through his hip that nearly threw him onto the spinning teeth.

Garret caught the masonry stanchion with his left forearm and held his boot down with the whole weight of his ribs. His knuckles locked into the stone joint. With his free right hand, he reached behind him, found the three-foot hexagonal pinch bar racked beside the grease tub, and dragged it free.

He did not jam the bar into the teeth blind. An apprentice would have stabbed at the wheel and lost an arm when the iron bounced back. Garret watched the blur of the gear teeth, tracking the uneven wobble of the outer rim where a casting bubble had left three teeth shallow. On the fourth rotation, as the shallow teeth swept past the bottom housing, he drove the wedge of the pinch bar between the flange and the frame bed.

Metal shrieked against metal. A blizzard of orange sparks sprayed his wool tunic and stung his neck. The pinch bar bit into the iron housing, biting hard enough to drag the drum's momentum down by half.

In that half second of slowed spin, Garret kicked the cast-iron dog pawl.

The four-inch iron pawl dropped with a crack like a pistol shot. It slammed into the ratchet trough, bounced once, and bit home.

The windlass seized.

A heavy shock shuddered through the floor flags, running up through Garret's shins and shaking the dust from the ceiling rafters. The thick cable groaned, taut as an iron bar for two breaths, before the severed lower end whipped out of the floor flue and slapped the stone flags with a wet thwack, dead and slack.

Garret stayed on his knees, his forehead pressed against the cold limestone stanchion. His chest heaved against his ribs. The winch room was thick with gray tallow smoke that drifted slowly toward the narrow arrow-slits. On the drum, the scorched friction leather was glowing dull red along its stitched edges.

He pulled himself up by the iron frame, his left ankle throbbing with dull, familiar heat. His hands were shaking, black with grease and speckled with tiny iron burns across the knuckles.

He looked down at the empty drum.

"Four gallons of prime mutton tallow," Garret muttered to the empty rafters, his voice raspy from smoke. "Boiled down, strained twice, and dumped into the gut of the Varrow for nothing."

He limped to the wall rack, pulled the locking bar from its iron pegs, and dropped it across the dog pawl. That secured the spool against any delayed recoil. He turned to the secondary iron crank on the south wall—the manual dog for the western portcullis. He threw his shoulder into the secondary wheel, ratcheting the teeth down three notches until the iron drop-dogs fell into the floor slots with three heavy thuds.

The western arch was dogged shut. Whatever was down there on the ground level, no draft from the broken gorge would force the iron gates open from outside. The upper winch mechanism was intact, cold, and anchored.

The air on Level 5 grew still. The only sound left was the muffled, unending churn of the cataract sixty feet below the floorboards.

Then a dull, hollow impact struck the eastern wall of the tower.

It was not the wind. It was the heavy, subterranean groan of splitting heartwood, echoing straight up through the stone chimney from the opposite pier. A second later, the iron tension wires along the eastern wall began to sing, their pitch climbing into a shrill, shrieking whine that rattled the mortar between the stones.

Garret froze, his grease-blackened hand still resting on the locking pin.

The eastern timber span was tearing free.