This effect can be used to seal pistons and shafts.

Sub-surface mining can be classified by the type of access shafts used, the extraction method or the technique used to reach the mineral deposit.

At mating, the angle between the banks and the angle between the crankshafts can be varied so that the balancer shafts cancel each other 90 ° V6 ( larger counter weights ) and the even firing 60 ° V6 with 60 ° flying arms ( smaller counter weights.

Although the use of offset crankpins, counterweights, and flying arms has reduced the problem to a minor second-order vibration in modern designs, all V6s can benefit from the addition of auxiliary balance shafts to make them completely smooth.

Unlike most other angles, 60-degree V6 engines can be made acceptably smooth without the need for balance shafts.

Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.

When joining shafts within a machine, mechanics can choose between flexible and rigid couplings.

They offer more flexibility than sleeved models, and can be used on shafts that are fixed in place.

Because of their size and durability, flanged units can be used to bring shafts into alignment before they are joined together.

When the disguised Odysseus returns, she announces in her long interview with the disguised hero that whoever can string Odysseus's rigid bow and shoot an arrow through twelve axe shafts may have her hand.

Therefore, the portion of the vertical shafts of those letters which lie between the base line and upper parallel can be discarded without legibility being affected.

A biopsy can be performed and may be helpful ; it reveals traumatized hair follicles with perifollicular hemorrhage, fragmented hair in the dermis, empty follicles, and deformed hair shafts ( trichomalacia ).

These areas can include riparian canyons, caves, and mine shafts.

Using a five-throw crankshaft and 72 ° bank angle the firing order can be made even, and the two balanced shafts do not balance each other completely, but are combined into a single A 36 ° degree bank angle and a 108 ° flying arm crankshaft would allow even firing without a balance shaft and smaller counterweights, but would be impractical.

The V10 configuration is not an inherently balanced design like a straight-6, V-12, flat-6, or V-8 ( ignoring the counterweights ) and does still have a small second order rocking motion, which can only be compensated by two additional balance shafts.

Any of the shafts can be used to input rotation, and the other ( s ) to output it.

It may seem illogical that the speed of one input shaft can determine the speeds of two output shafts, which are allowed to vary.

Amory Lovins has advocated a " negawatt revolution ", arguing that utility customers don ’ t want kilowatt-hours of electricity ; they want energy services such as hot showers, cold beer, lit rooms, and spinning shafts, which can come more cheaply if electricity is used more efficiently.

Carbon shafts have the advantage that they do not bend or warp, but they can often be too light weight to shoot from some bows and are expensive.

Aluminum shafts are less expensive than carbon shafts, but they can bend and warp from use.

The sheets join the shafts of the wheelbarrow and can thus be manipulated by the man in charge.

They can be connected by short vertical shafts known as " winzes ".

* It can be used to find defects in shafts, pipes, and other metal or plastic parts

Though once widely used in factory line shafts, this type of pulley is still found driving the rotating brush in upright vacuum cleaners.

The area's regenerating bushland still holds numerous semi-collapsed or open mining shafts where silver and gold had been mined.

Traces of the vaults and the shafts which supported them are still visible in the western two bays.

The ancient workings, consisting of shafts and galleries for excavating the ore, and washing tables for extracting the metal, may still be seen.

Central City has a number of old underground coal mine shafts that still crisscross the city.

Iron mining was prominent in the area from the 18th century until the Great Depression, and iron shafts and pits, landfills and other elements still exist.

Most ya shafts today are still made of bamboo ( although some archers will use shafts made of aluminum or carbon fibers ), and ya feathers are now obtained from non-endangered birds such as turkeys or swans.

The presbytery's arcades were supported by eight clustered shafts, the bases of which are still visible, with capitals carved with naturalistic foliage.

The ancient workings, consisting of shafts and galleries for excavating the ore, and washing tables for concentrating the ore, may still be seen at many locations.

Darkness gathers around, far distant thunder rolls over the trembling hills ; the black clouds with august majesty and power, moves slowly forwards, shading regions of towering hills, and threatening all the destructions of a thunderstorm ; all around is now still as death, not a whisper is heard, but a total inactivity and silence seems to pervade the earth ; the birds afraid to utter a chirrup, and in low tremulous voices take leave of each other, seeking covert and safety ; every insect is silenced, and nothing heard but the roaring of the approaching hurricane ; the mighty cloud now expands its sable wings, extending from North to South, and is driven irresistibly on by the tumultuous winds, spreading his livid wings around the gloomy concave, armed with terrors of thunder and fiery shafts of lightning ; now the lofty forests bend low beneath its fury, their limbs and wavy boughs are tossed about and catch hold of each other ; the mountains tremble and seem to reel about, and the ancient hills to be shaken to their foundations: the furious storm sweeps along, smoaking through the vale and over the resounding hills ; the face of the earth is obscured by the deluge descending from the firmament, and I am deafened by the din of thunder ; the tempestuous scene damps my spirits, and my horse sinks under me at the tremendous peals, as I hasten for the plain.

It is used for tool handles, bows, wheel spokes, carts, drumsticks, lacrosse stick handles, golf club shafts ( sometimes still called hickory stick, even though made of steel or graphite ), the bottom of skis, walking sticks and for punitive use as a switch ( like hazel ), and especially as a cane-like hickory stick in schools and use by parents.

Similar remains for the vaulting shafts of the south chapel are still preserved outside the south wall of the chancel.

However, you can still see a number of adobe structures, the remains of the railroad depot, two cemeteries, and several mine shafts.

Many of the later mine shafts have now been filled in, but a few do still remain, fenced off to prevent walkers or animals from falling in.

There is much evidence of the 1907 siege works in this ditch, three of the counter-mine shafts still survive, now mostly covered up with debris and rubbish ( post 1962 ).

Other visible evidence of the tunnel still exists, in the form of three imposing red brick towers, which act as ventilation shafts for the tunnel.

Even so, Farrer also notes that several old quarries and shafts still existed within the area while also making reference to a " brewery at Portico, and a pottery near Prescot, while glass, watchmakers ' tools, and mineral waters are also manufactured ".

This increases travel time, and indirectly requires many more elevator shafts to still allow acceptable travel times – thus reducing effective floor space on each floor for all levels.

The Cwmcarn Forest Drive now runs over the shafts of the colliery and a relics of colliery buildings can still be seen on the slope above the old shaft.

The shafts usually are still longer than a normal shaft, although within limitations.

During the beginning of the Bronze age the metal head of the weapons were still bound to the shafts of the weapons.

They followed the veins with shafts and tunnels underground, some of which still exist on the site.