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Now his heart was thumping as he turned the elevating screw past five degrees.
The long elevating screws of the newer models was subject to breaking .
Kerley and the sergeant talked quietly about wind, distance, elevation, made adjustments on the elevating screw.
His eyes were fixed on the tight spiral of metal that was the elevating screw of a carronade.
-things which the Americans called elevating screws.
The carronades were similarly treated, but the elevating screws on these cannon were marked in paint.
The elevating screw is under tension when loaded and hence there is no chance of distortion due to buckling.
Sharpe said, then turned the cannon's elevating screw until it pointed to a spot just above the far Fort Niebla.
He himself heaved on the elevating screw, though as yet the gun was still masked by some half filled gab ions that blocked the embrasure.
Aiming was greatly improved with the invention of the elevating screw, a threaded rod passing through the carriage under the barrel's breech.
The legs of the bipod, made of tubular steel, are mounted on the elevating screw housing by a clevis joint.
One half-turn too many on the gun's elevating screw and the ball would fall short, one turn too few and it would scream overhead.
Wiard altered the shape of the carriage's cheeks, relocated the axle and provided a long elevating screw; this made firing at elevation of up to 35 degrees possible.
- DAVID DRAKE - to clear his submachine gun but the sling caught in the mortar's elevating screw.
The elevating screw is provided with buttress thread supported with single-acting thrust ball-bearing having a spherical seating at the top and self-aligning ball-bearing at the bottom.
All of the Dahlgren shell guns were cast iron columbiads, had a distinctive soda bottle shape and all but two had an elevating screw running through the cascabel.
All of the boat howitzers were very similar in design, cast in bronze, with a mounting lug or loop on the bottom of the barrel instead of trunnions, and an elevating screw running through the cascabel.
Bond fiddled minutely with the traversing and elevating screws at his fingertips and got the fine lines of the scope exactly intersected, just behind where the butt of the enemy gun merged into the blackness behind.
The origins of the elevating screw are somewhat obscure, but two renowned Renaissance artists and inventors, Leonardo da Vinci (1452-1519) and his German counterpart, Albrecht Durer (1471-1528), included depictions of the device in their manuscripts and engravings.
Other differences are the buttress-type threads on the traversing and elevating screws of the Japanese weapon, as well as the use of welding to fasten bipod legs to the clevis joint and grease fittings dissimilar to those used by the US model.
The French gunners abandoned their pieces, left their horses squealing and dying, and fled, and then the British guns racked their elevating screws or loosened the howitzer quoins and started to pour shot and shell into the massed ranks of the nearest French column.
Their carriages, with large spoked wheels with extra-wide rims, and lighter weight, would give them a degree of mobility no Mardukan had ever dreamed was possible, and the introduction of trunnions and elevating screws would completely change their tactical flexibility, both afloat and ashore.
Some have argued that these guns are not Dahlgren designs, pointing out that while the guns generally resemble his designs, these guns used an old-style breeching jaws instead of the breech loop found on other Dahlgrens and that there is no elevating screw running through the cascabel .
This is not accurate, particularly for the VIII-inch Dahlgren, as a new iron carriage with an elevating screw beneath the breech of the gun was developed for VIII-inch and other carriages with breech elevating screws were also used .