Who invented the up and over garage door?
There are five types of garage door openers:
- Chain drive openers. ...
- Belt drive openers use a rubber belt in place of a chain.
- Screw drive openers have a long screw inside the track. ...
- Direct drive openers have the motor installed inside the trolley and use a gear wheel to guide the trolley along a fixed chain.
- Jackshaft openers mount on the wall at either end of the torsion bar.
Who invented the automatic sliding door?
What sensors are used in automatic doors?
- Radar Movement Sensors.
- Pressure Sensors.
- Optical Sensors or Motion Detectors.
- Passive Infrared Movement Sensors.
- Active Infrared Sensors.
Who invented the at sign?
- abbreviation of the Greek preposition ανά (transliterated ana), meaning at the rate of or per.
- abbreviation created by medieval monks for the Latin word ad (meaning towards, by, about) in order to save ink in their manuscripts.
- derived from the Norman French à meaning at in the each sense.
Who invented the hold button?
What an inconvenience! Milton used his background knowledge in radio, communications, and electronics to come up with a solution to the problem, a working model of the on-hold button. This marvel was successfully incorporated into the Western Electric Series E phone, patented in 1930.
Did ancient Egyptians have hinges?
Hinges have been found among Egyptian ruins dating back to about 760-650 B.C. Babylonians and Assyrians, in late B.C. and early A.D., were also recognized as hinge users. Moving slightly forward in time, the hinge begins to develop.
Did medieval doors have hinges?
Metal Hinges in the Middle Ages Metalwork advanced during the Medieval period, and more and more common people began using hinged-doors in their houses. Local blacksmiths could create wrought iron hinges, as well as other wrought iron tools, at an affordable rate.
What did colonists use for door hinges?
You will find that many colonial homes used straps on exterior doors and H&HL hinges throughout the interior. Iron butt hinges were used in colonial American as well, although they were not as common as either strap hinges or HL hinges.
What is a hinged door?
What is a hinged door? A hinged door is the most common door and has been in existence for a lot longer. A hinged door traditionally has 2-3 hinges on the vertical long edge of the door and is either left or right-handed. A hinged door can be fitted to swing inwards or outwards.
When was the hinged door invented?
1600 B.CHinges from 1600 B.C The earliest known pivot hinges date back to approximately 1600 B.C. These were found as wooden doors pivoting from stone sockets in Hattusa, which is in modern day Turkey.
What was before doorknobs?
Before door knobs and handles were invented, people used a bolt or a lock to keep a door shut. Only the wealthy could afford a lock and key. Most people used a latch-string - making a small hole in a door and threading a leather thong or string through, which could then be looped around a wooden bar.
Who invented Door knobs?
Osbourn DorseyHowever, it was in 1878 that the idea of inventing door knobs was first introduced by documentation. This was all started thanks to an inventor named Osbourn Dorsey, who first submitted a suggestion to the U.S Patent Office for a door-closing device.
What were old door knobs made of?
Pressed glass knobs were popular from 1826 to 1850. Cut glass knobs were popular until around 1910. Cast metal knobs were introduced in 1846. China and ceramic knobs were imported from Europe and popular from the mid-1800's until the early 1900's.
What is a pivot hinge door?
Pivot doors' hinges are mounted on the top and bottom side of the door, instead of on the side. The pivot door rotates on a vertical axis. A pivot doors movement is visually very different from a regular hinged door.
Where are hinged doors used?
Where are hinged doors used? This is the most common door type, and is useful in almost any application in which a door is required. These doors are frequently found as front entry, rear entry, interior and wardrobe doors.
What are French doors?
French door (n.): A door, usually one pair, of light construction with glass panes extending for most of its length. They also can be referred to as French windows.
Why do we sometimes use sliding doors instead of hinged doors?
Quality sliding doors don't take much effort to open. They give your home a sleek or contemporary style instead of a more traditional one. Sliding doors don't need any exterior space to function. Sliding doors are nearly all-glass meaning you'll get tons of natural light.
What is the History of Hinge Manufacturing?
Would you believe hinges have been used throughout human history for so long, that archaeologists are not able to precisely determine the hinge’s origin? What we do know is that simple metal hinges were utilized as far back as 5,500 years ago. Some of the earliest hinges, prior to metallurgy, were crafted from wood and stone.
The Metal Hinge Evolves
As ancient cultures progressed, whether Greece, Rome, China, Persia or others – the exactitude with metal-working progressed, as well.
What Did Ancient Hinges Look Like?
Hinges were being used in ancient societies across Europe, Africa, and Asia, amongst other places. However, many, if not all, early hinges were made from bronze.
Hinges were Used for Jewelry Too
Contrary to what many people think, hinges during ancient times were even produced at a miniature scale. While they weren’t used in everyday objects, gold jewelry, for instance, wasn’t considered “everyday objects” either.
Victorian Era Door Hinges
During the Victorian Era, door hinges were comparatively more common, mainly because steam power and the age of industrialization meant that they were produced at scale. The hinge was in the middle of a manufacturing boom. The numerous mechanical advances over a short time meant there just about every machine needed hinge parts.
Door Hinges in Today
Hinge development didn’t stop; in fact, it hasn’t top just yet either. We’ve seen further developments in hinge technology, but much of it has to do with machine building.
Conclusion
Door hinges are just a fraction of the types of hinges that we use today. In fact, there are several dozen various categories of hinges that are used across various industries and for various purposes. There are also custom-built hinges meant for a particular type of machine.
Where was the bronze hinge found?
Although most ancient doors were primitive, a bronze hinge has been discovered from Egypt 8th century B.C. Historical sites all over the world, such as this site in Cambodia, have also uncovered a type of hinged pivot. These rudimentary pivot hinges were used on stone doors and allowed the doors to be opened much in the same way as a saloon door.
What is the most popular material for a door?
Wood is the most popular and versatile material choice for a door. Wooden doors have been in existence from the start of civilisation. According to the bible, King Solomon, the biblical Israelite King, had olive wood doors made for his Temple.
What is a double hinge door?
Also referred to as a double-acting floor hinge. This type is found in ancient dry stone buildings and rarely in old wooden buildings. These are also called haar-hung doors. They are a low-cost alternative for use with lightweight doors.
When were H hinges common?
These were common for passage doors, room doors, and closet doors in the 17th, 18th, and even 19th centuries. On taller doors, H hinges were occasionally used in the middle along with the HL hinges.
What is a barrel hinge?
A barrel hinge consists of a sectional barrel (the knuckle) secured by a pivot. A barrel is simply a hollow cylinder. The vast majority of hinges operate on the barrel principle.
How many degrees of freedom does a hinge have?
Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation: all other translations or rotations being prevented, and thus a hinge has one degree of freedom. Hinges may be made of flexible material or of moving components.
Why are hinges used in architecture?
Hinges are used in contemporary architecture where building settlement can be expected over the life of the building. For example, the Dakin Building in Brisbane, California, was designed with its entrance ramp on a large hinge to allow settlement of the building built on piles over bay mud.
What is a spring loaded hinge?
This is a spring-loaded hinge made to provide assistance in the closing or the opening of the hinge leaves. A spring is a component of a hinge, that applies force to secure a hinge closed or keep a hinge opened.
What is self closing hinge?
Self-closing hinge. This is a spring-loaded hinge with speed control function. The same as spring hinge, usually use spring to provide force to close the door and provide a mechanical or hydraulic damper to control door close speed. That can prevent door slamming problem while auto closes a door.
What are H hinges?
H Hinges – Shaped like an H and used on flush mounted doors. Small H hinges (3″ to 4″) tend to be used for cabinets hinges, while larger hinges (6″ to 7″) are for passage doors or closet doors. HL Hinges – Large HL hinges were common for passage doors, room doors and closet doors in the 17th, 18th and even 19th centuries.
When were butterfly hinges invented?
Butterfly or Parliament (UK) Hinges. These were known as Dovetail hinges from the 17th century onwards and can be found on old desks and cabinets from about 1670 until the 18th century.
What are the different types of door hinges?
There Are Many Types Of Door hinges. The Main Types Include: Butt/Mortise Hinges, usually in threes or fours, which are inset (mortised) into the door and frame. Most residential hinges found in the U.S. are made of steel, although mortise hinges for outswing doors are often made of brass or stainless steel base to prevent corrosion.
What is pivot hinge?
Pivot Hinges, which pivot in openings in the floor and the top of the door frame. Also referred to as a double-acting floor hinge. This type is found already in ancient dry stone buildings. Above photos are of old construction of hinges in the dry stone wall near Bignasco, Swiss Italian.
What are continuous hinges?
Continuous Hinges, which run the entire length of the door (also known as “Piano Hinges”) Concealed Hinges used for furniture doors (with or without self-closing feature, and with or without dampening systems). They are made of 2 parts: One part is the hinge cup and the arm; the other part is the mounting plate.
Why are garage doors hinged?
Most doors are hinged along one side to allow the door to pivot away from the doorway in one direction, but not the other. The axis of rotation is usually vertical. In some cases, such as hinged garage doors, the axis may be horizontal, above the door opening.
What is the purpose of a door?
The created opening in the wall is a doorway or portal. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the portal of a building, room, ...
Why are sliding glass doors dangerous?
This risk is greater with sliding glass doors because they often have large single panes that are hard to see. Stickers or other types of warnings on the glass surface make it more visible and help prevent injury. In the UK, Regulation 14 of the Workplace (Health and Safety Regulations) 1992 requires that builders mark windows and glass doors to make them conspicuous. Australian Standards: AS1288 and AS2208 require that glass doors be made of laminated, tempered, or toughened glass.
Why are doors used in architecture?
Architectural doors have numerous general and specialized uses. Doors are generally used to separate interior spaces (closets, rooms, etc.) for convenience, privacy, safety, and security reasons. Doors are also used to secure passages into a building from the exterior, for reasons of climate control and safety.
Where are the doors from the afterlife?
The earliest recorded doors appear in the paintings of Egyptian tombs, which show them as single or double doors, each of a single piece of wood. People may have believed these were doors to the afterlife, and some include designs of the afterlife. In Egypt, where the climate is intensely dry, doors weren't framed against warping, but in other countries required framed doors—which, according to Vitruvius (iv. 6.) was done with stiles (sea/si) and rails (see: Frame and panel), the enclosed panels filled with tympana set in grooves in the stiles and rails. The stiles were the vertical boards, one of which, tenoned or hinged, is known as the hanging stile, the other as the middle or meeting stile. The horizontal cross pieces are the top rail, bottom rail, and middle or intermediate rails.
What does it mean when you receive the key to a door?
Doors may have aesthetic, symbolic, ritualistic purposes. Receiving the key to a door can signify a change in status from outsider to insider. Doors and doorways frequently appear in literature and the arts with metaphorical or allegorical import as a portent of change.
What is a door panel?
Conventionally, it is a panel that fits into the portal of a building, room, or vehicle. Doors are generally made of a material suited to the door's task. Doors are commonly attached by hinges, but can move by other means, such as slides or counterbalancing.
Who invented the revolving door?
The first patent in the world for a revolving door went to German inventor H. Bockhacker in 1881, but the idea didn't catch on. In 1888, Pennsylvania resident Theophilus Van Kannel received the first U.S. patent for a three-way storm door with weather stripping to ensure an energy-efficient fit with the doorframe.
When was the first revolving door installed?
When the first revolving door was installed in the U.S. in 1899, it ferried customers into Rector's, an upscale restaurant in New York City's Times Square. The door was made of wood, unlike today's revolving doors made of aluminum and steel [source: The Rockefeller University ].
What is a revolving door?
A revolving door consists of multiple panels that rotate inside a cylindrical rotunda -- and not one of these fixed panels can be slammed shut. While this might not be great for making a point during a heated discussion, a revolving door does offer a number of benefits. Although a revolving door isn't airtight, ...
How does a revolving door affect energy?
With a revolving door, at least one panel is almost sealing the building and reducing the amount of energy leaving it.
How many panels are in a revolving door?
The next time you step between the panels of a revolving door, take a closer look. Most revolving doors are composed of three or four individual panels; those used to accommodate more than one person have only two panels. Regardless of the number of panels, all fan out from a central shaft that rotates within a glass-enclosed cylinder.
How much energy savings would a swinging door save?
The students calculated that if everyone entering or exiting the building used the revolving doors, taking into account local weather conditions, the energy savings would be around 75,000 kilowatt-hours per year.
Ancient Era
Ancient Pivoting Doors
- Although most ancient doors were primitive, a bronze hinge has been discovered from Egypt 8th century B.C. Historical sites all over the world, such as this site in Cambodia, have also uncovered a type of hinged pivot. These rudimentary pivot hinges were used on stone doors and allowed the doors to be opened much in the same way as a saloon door.
The Roman Era
- What Did The Romans Ever Do For Us?
The Roman civilisation is known for their inventive engneering projects. They also made the blueprint for doors that we use today - folding doors, sliding doors, double doors - and they also created hinge designs that are still in use today.
The Medieval Period
- Bronze, Iron and Gold
Metal doors or portcullis gates were used to provide extra security for Medieval castles. Security was the main consideration for using metal doors and Later, in the Renaissance, bronze was used by sculptors to create elaborate designs for door panels. The most famous of these are the Sout…
The Traditional Wooden Door
- Wood is the most popular and versatile material choice for a door. Wooden doors have been in existence from the start of civilisation. According to the bible, King Solomon, the biblical Israelite King, had olive wood doors made for his Temple. The ancient Egyptians also used wooden doors in their homes and temples. In 2010, the oldest European wooden door ever found in Europe wa…