In 1883, Ottomar Anschütz ( Germany ) patented a camera with an internal roller blind shutter mechanism, just in front of the photographic plate.

Note that the Contax ( Germany ) 35 mm RF camera of 1932 had a vertical travel FP shutter with dual brass-slatted roller blinds with adjustable spring tension and slit width, and a top speed of 1 / 1000 sec.

Units were fitted with roller shutter doors, and were based at Chester depot.

These rides were Road Runner Express, Greezed Lightnin ' ( shutter launch coaster ), Sky Coaster, Sling Shot, Tornado ( water ride ), Deluge ( water roller coaster ) and Mega Wedgie ( water bowl ).

The rebuilding work including removal of the windows and slam-doors, the fitting of roller shutter doors, and modernisation of the cab.

During the war years, the chief designer, Hubert Nerwin, tried to convert the Contax into a single-lens reflex camera but was hindered by the presence of the upper roller of the vertical focal-plane shutter.

As the traditional vertical-run Contax shutter required considerable space both above and below the film gate for the drum rollers, the upper roller takes up the critical space required for the reflex housing mechanism, making it dimensionally impossible to use it for a satisfactory SLR camera.

A common example of this is, in overhead valve engines, replacing the production rocker arms with replacements incorporating roller bearings in the roller contacting the valve stem.

In trials at Bexley in 1894 his machine rode on of rails and was prevented from rising by outriggers underneath and wooden safety rails overhead, somewhat in the manner of a roller coaster.

The 1903 Premier engine had a gear-driven Overhead camshaft # Single overhead camshaft | overhead cam, roller cam followers, and crossflow hemi heads.

It had two simplex roller chain-driven ( relay method, using three chains ) double overhead camshaft ( two overhead camshafts per cylinder bank, hence " quad cam "), and twin balance shafts to smooth out residual vibrations inherent in the layout.

These include using a rubber / kevlar toothed timing belt, and double overhead camshaft ( DOHC ) roller chains, or in less common cases, gears.

After leaving the roller, the bun was dragged over a Teflon-coated hot plate by an overhead chain conveyor that dropped on top of the bun.

; cylinder heads and valvetrain: cast aluminium alloy, four valves per cylinder, 40 valves total, low-friction roller cam followers with automatic hydraulic valve clearance compensation, 2x chain driven double overhead camshafts ( 2xDOHC-two overhead camshafts per cylinder bank-' quad cam '), continuously variable valve timing system both for intake and exhaust

Until 2007, it also included tracks suspended overhead that resembled a roller coaster.

The F20C and F22C1 have two overhead cams with roller followers, a ladder-frame main bearing stiffener, a VTEC system for both the intake and exhaust camshaft, Fiber-Reinforced Metal cylinder liners ( FRM ), molybdenum disulfide-coated piston skirts for reduced friction, and uses a timing chain.

The dual overhead camshafts are driven by a single-stage roller chain of 8. 0 mm ( 0. 3-in ) pitch, enabling a narrow included valve angle of 27. 5 °.

The latter were used as improvised gunships / bombers, being armed with 50 caliber machine guns and equipped with a roller system to trundle 250 pound bombs out the cargo door during flight.

This allows the user to have keyed-alike, and master-keyed systems that incorporate a wide variety of different types of lock, such as nightlatches, deadbolts and roller door locks.

File: Roller_blind. jpg | A roller blind on a door

To the left is a roller door which is permanently closed, behind which are entrances for male and female toilets.

This invention opened the door for the masses to enjoy roller skating.

These included external ' door open ' indicator lights, roller destination blinds, fluorescent lighting and a modified way of displaying the internal advertisements and District Line route maps.

This turn offers the riders a view of the main roller coaster portion, in which boats emerge into a sliding door above the U-turn.

* Getting electrocuted while trying to fix the door to open the roller coaster.

When the cloth is smooth, apply another coat of resin, spreading it with a paint roller.

The depth of water is necessary for determining scope, which is the ratio of length of cable to the depth measured from the highest point ( usually the anchor roller or bow chock ) to the seabed.

For example, if the water is 25 ft ( 8 m ) deep, and the anchor roller is 3 ft ( 1 m ) above the water, the scope is the ratio between the amount of cable let out and 28 ft ( 9 m ).

Another type of driver, used less frequently, is a roller.

Once perfected, the roller is an invaluably versative tool in the golfers arsenal.

In some countries, it is known simply as " hockey "; however, the name field hockey is used in countries in which the word hockey is generally reserved for another form of hockey, such as ice hockey, street hockey or roller hockey.

A " blockbuster " or " roller " is a large piece, almost always done in a block shaped style, done simply to cover a large area solidly with two contrasting colours, sometimes with the whole purpose of blocking other writers from painting on the same wall.

It is machined from solid brass and hardened steel and is adjustable by an eccentric roller to suit any gauge of string.

Inline hockey is a variation of roller hockey very similar to ice hockey, from which it is derived.

Roller hockey, also known as quad hockey, international-style ball hockey, and Hoquei em Patins is an overarching name for a roller sport that has existed since long before inline skates were invented.

Also known as road hockey, this is a dry-land variant of ice and roller hockey played on a hard surface ( usually asphalt ).

* 1958 – The wooden roller coaster at Playland, which is in the Pacific National Exhibition, Vancouver, British Colombia, Canada opens.

Jerk is often used in engineering, especially when building roller coasters.

Another approach to reducing friction and wear is to use bearings such as ball bearings, roller bearings or air bearings, which in turn require internal lubrication themselves, or to use sound, in the case of acoustic lubrication.

In 2013 Luanda together with Namibe city, will host the 2013 FIRS Men's Roller Hockey World Cup, the first time that a World Cup of roller hockey is held in Africa.

* 1989 – Cedar Point opens Magnum XL-200, the first roller coaster to break the 200 ft height barrier, therefore spawning what is considered to be the " coaster wars ".

When a blank sheet of paper is drawn between the rotating drum and a pressure roller, ink is forced through the holes on the stencil onto the paper.