In medieval architecture, a boss is a stone or timber knob or protrusion, most commonly found in ceilings at the location of keystones in vaulting, expressing the junction between the intersecting ribs. Their original purpose was to conceal the complex mitred joints.
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What is a boss in an arch for?
When stone components were rough-cut offsite at quarries, they were usually left with bosses (small knobs) protruding on at least one side. This allowed for easy transport of the pieces to the site; once there, the bosses also facilitated raising and/or inserting them into place.
What are bosses in a cathedral?
About Cathedral Roof Bosses
A cathedral roof boss is the carved underside of the key-stone that forms the meeting point of several converging vaulting ribs which, in turn, are the load bearing arches supporting the vaulting itself.
What is a boss in a church?
Roof bosses are found where the beams or vaults in a ceiling meet, and are ornately carved in order to decorate this architectural feature. The term ‘boss’ probably derives from the Old French ‘boche’, meaning ‘swelling’ or ‘bump. ‘ Roof bosses in the chancel of St Mary’s church.
What is a boss in manufacturing?
A boss is a cylindrical protrusion placed on a part’s wall. A boss can have various functions, such as the following: Positioning aid – To help align parts during assembly; for example, a pin on one part will fit a hole in the other part.
What are spandrels on a house?
In buildings of more than one story the spandrel is the area between the sill of a window and the head of the window below it. In steel or reinforced concrete structures there will sometimes be a spandrel beam extending horizontally from one column to another and supporting a section of wall.
What are raised bosses?
Princeton’s WordNet defines “emboss” as “raise in relief,” and that’s exactly what a boss is: a feature raised above a surface. In plastic parts, bosses are typically used to assist in assembly, as a receptacle for a screw or threaded insert or as the locator for a mating pin on another part.
What is a boss plate?
Definition of boss plate
: one of the after plates on each side of a single-screw ship, covering the boss for the stern tube.
What is a metal boss?
A shallow raised shape that is pressed into a sheet of material to increase the strength in a local area. Also called embossment.
What is a boss fitting?
A simple design for better leak protection. With its streamlined one-piece design, the B.O.S.S. Fitting® (bolted one-piece sure seal) reduces the seal point to a single gasket to greatly reduce chances for leakage.
What is the space under the arch called?
A spandrel is the space between two arches. It is the space between an arch and a rectangular fence or the space between the right and left exterior curve of an arch and an enclosing right angle.
What is the space between arches called?
Definition of spandrel
1 : the sometimes ornamented space between the right or left exterior curve of an arch and an enclosing right angle. 2 : the triangular space beneath the string of a stair.
What does a spandrel look like?
A spandrel is a roughly triangular space, usually found in pairs, between the top of an arch and a rectangular frame; between the tops of two adjacent arches or one of the four spaces between a circle within a square. They are frequently filled with decorative elements.
What does boss mean in slang?
excellent
slang. : excellent, first-rate a boss new rock band. boss.
What it means to be a boss?
Being a boss is a position requiring the ability to provide instructions and orders, ensuring people do the things the boss tells them to do. Bosses don’t ask or prefer certain actions, they expect and they tell what needs to be done.
What is a leader VS boss?
A leader collaborates; a boss dictates
They don’t simply rely on one or two managers to oversee progress. Although a good manager is a serious asset, leaders are hands-on, brainstorming side by side with partners and employees on the team to come up with innovative solutions.
Why is it called a shield boss?
The boss was originally designed to deflect blows from the centre of round shields, though they also provided a place to mount the shield’s grip. As time went on and heater shields with curved bodies became more popular, and enarmes superseded the bar grip, the boss became more of an ornamental piece.
Why do shields have a boss?
A strengthened outward‐projecting cover at the centre of a shield behind which is the handle or grip used to hold the shield. The purpose of the boss is therefore to protect the hand of the person using the shield. Shield bosses are often of metal, even where the main structure of the shield is wood or leather.
What is the middle of a shield called?
Boss. The most important among all the parts of medieval shields was the Boss. It was the round central part of a shield and was, therefore, the most crucial with respect to defenses.
What is a boss socket?
Boss is a pipe attachment detail in which a pipe is inserted into a recessed area of a Valve, fitting or flange. In contrast to buttweld fittings, Socket Weld Fittings are mainly used for small Pipe Diameters (Small Bore Piping); Generally for Piping whose Nominal Diameter is NPS 2 or smaller.
What is a bossed tee?
The Boss Tee is designed to work double duty in the sanitary DWV piping system: during construction to hydrostatically test the piping system for leaks then after testing as a standard cleanout tee.