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A Tide Formula Component Crank on Tide Predicting Machine No. 2

A tide forumula component crank on Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The mechanical arrangement (a slotted crank yoke) converts circular motion to a vertical motion that traces a sinusoid. The operator adjusts the position of the pin on the crank to represent a component of the tide formula at a specific coastal port before starting computations. The pin position affects the amplitude and phase of the sinusoid. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to produce its tide predictions. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. A tide forumula component crank on Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The mechanical arrangement (a slotted crank yoke) converts circular motion to a vertical motion that traces a sinusoid. The operator adjusts the position of the pin on the crank to represent a component of the tide formula at a specific coastal port before starting computations. The pin position affects the amplitude and phase of the sinusoid. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to produce its tide predictions. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank.

Slotted spoon isolated on white background

Slotted screwdriver

Closeup of slotted screwdriver - studio isolated on white

Slotted Wooden Spatula

Slotted Wooden Spatula Isolated on White

Modern Black Slotted Turner

Modern Black Slotted Turner

Photo fragment microwave in the kitchen in an apartment in a residential house. Photo fragment microwave in the kitchen in an apartment in a residential house

Photographer's compendium lens shade on yellow

Assortment of handmade wooden spoons, isolated on a white background

Plastic skimmer

Plastic kitchen skimmer spoon isolated on white. Plastic kitchen skimmer spoon isolated on white

retro distressed sticker of a cartoon ladle

retro distressed sticker of a cartoon ladle

Kitchen Tool Set

Set of black modern kitchen utensil standing on white background. Set of black modern kitchen utensil standing on white background

Modern Silicone Slotted Turner

Modern Silicone Slotted Turner

Background from handmade wooden spoons, isolated on white

Slotted Spoon

sticker of a cartoon ladle

sticker of a cartoon ladle

Closeup of steel nuts and bolts. Closeup of steel nuts and bolts

Young chef holding slotted spoon

Young chef holding slotted spoon against white background

Slotted spoon

Photo fragment microwave ovens in the kitchen in an apartment dwelling house. Photo fragment microwave ovens in the kitchen in an apartment dwelling house

Modern Metal Slotted Turner

Modern Metal Slotted Turner

Slotted flat head screws.

Slotted flat head screws.

Two screwdriver

Two screwdriver on white background

Slotted serving spoon

Slotted serving spoon

Slotted Wooden Spatula

Slotted Wooden Spatula

Close up view of kitchen utensil perforated spoon over white background. Close up view of kitchen utensil perforated spoon over white background

Close-up of a black plastic spatula

Kitchen Tool Set

Set of black modern kitchen utensil lyng on white background. Set of black modern kitchen utensil lyng on white background

Hexagon slotted nuts

Hexagon slotted nuts

Spaghetti spoon

Hand Use plastic spaghetti spoon

Slotted spoon isolated on white background

Plastic Spatula

An image of a plastic spatula

Hand graven wooden tools.

Fair sold a lot of hand-graven scoop, spoons, forks, slotted spoon and other wooden tools. Fair sold a lot of hand-graven scoop, spoons, forks, slotted spoon and other wooden tools.

Potato Masher and Slotted Spoon

Potato Masher and Slotted Spoon

Kitchen utensils

Kitchen utensils isolated on white

Slotted Spoon

Looking into the Top of Tide Predicting Machine No. 2

These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. Along the top of the photo, connecting shafts drive slotted yoke cranks on both sides of the machine. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. The National Oceanic and Atmospheric Administration (NOAA) occasionally displays the machine at its facility in Silver Spring, Maryland. These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. Along the top of the photo, connecting shafts drive slotted yoke cranks on both sides of the machine. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. The National Oceanic and Atmospheric Administration (NOAA) occasionally displays the machine at its facility in Silver Spring, Maryland.

A set of turnscrews with colorful transparent plastic gripes and different points for small works. Shallow depth of field. Focus on gripes. Isolated over white

Slotted Wooden Spoon

Slotted Wooden Spoon Isolated on White

Cooking Utensil's

Four cooking utensil's are siting on a white background. A spatula, slotted spoon, a pasta spoon and a serving spoon. Four cooking utensil's are siting on a white background. A spatula, slotted spoon, a pasta spoon and a serving spoon.

Blue Screwdriver

Blue Screwdriver have Rust but can use it.

Set of screwdrivers

Set of screwdrivers on a white background

Slotted Wooden Spatula

Slotted Wooden Spatula Isolated on White

Mechanically Adding Trigonometric Functions

These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank.

Closeup of steel nuts and bolts. Closeup of steel nuts and bolts

Mountain with blue sky and white clouds

Slotted spoon

Spaghetti Spoon

Black plastic spaghetti spoon

Yellow toy spatula

A yellow toy spatula on a white background.

Slotted Spoon

Gray Metal Slotted Chair

Gray Metal Slotted Chair

Two screwdriver

Two screwdriver on white background

Assortment of handmade wooden spoons, on a white background

Antique silver Slotted Spoon from the side

Antique silver Slotted Spoon from the side Isolated
With a white background

Set of screwdrivers

Set of screwdrivers on a white background

Spoon slotted

Tide Formula Component Cranks on Tide Predicting Machine No. 2

Tide formula component cranks on Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The mechanical arrangement (a slotted crank yoke) converts circular motion to a sinusoidal motion. The operator adjusts the position of the pin on each crank to represent the tide formula at a specific port before starting computations. The pin position affects the amplitude and phase of the sinusoid. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank.

Baking set utensils with rolling pin, spatula, whisk, slotted wooden spoon on white wooden background, top view

Baking set utensils with rolling pin, spatula, whisk, slotted wooden spoon on white wooden background, top view

Fresh tuna fish

Fresh tuna fish, ready to be prepared

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