Energy & Power

• 

  Experimental fluorescent lamp

  Description

  The development of practical fluorescent lamps took decades, and many researchers contributed. Julius Plucker and Heinrich Geissler made glowing glass tubes in the 1850s, about the time George Stokes discovered that invisible ultraviolet light made some materials glow or "fluoresce." Alexandre Edmond Becquerel put fluorescent materials in a Geissler tube in 1859, though his tubes did not last long. Carbon dioxide-filled tubes by D. McFarlan Moore and mercury vapor tubes by Peter Cooper Hewitt around 1900 gave practical experience with gas-filled, discharge lamps and inspired the neon tubes of Georges Claude.

  In 1926 Friedrich Meyer, Hans Spanner, and Edmund Germer of Germany patented an enclosed glass tube containing mercury vapor, electrodes at either end, and a coating of fluorescent powders called phosphors. This incorporated all of the features we see in modern fluorescent tubes, but their employer did not pursue development. William Enfield of General Electric saw phosphor-coated neon tubes in France in the early 1930s, and heard that European researchers were developing a fluorescent lamp. An especially urgent 1934 letter from a consultant, Nobel-laureate Arthur Compton, coming on the heels of European breakthroughs in low-pressure sodium and high-pressure mercury lamps, spurred both GE and its licensee Westinghouse into combined action.

  Enfield created a team led by George Inman, and by the end of 1934 they made several working fluorescent lamps, including the one seen here. To save time, the team adopted the design of an existing tubular incandescent lamp in order to make use of available production equipment and lamp parts. Speed was important. In addition to European competitors, American companies like Sylvania were also working on fluorescents. A second GE group under Philip Pritchard worked on production equipment. Other GE groups in Schenectady and in Ft. Wayne assisted in developing ballasts and resolving problems of circuit design.

  In 1936 GE and Westinghouse demonstrated the new lamp to the U.S. Navy (that lamp is in the Smithsonian's collection). The public finally saw fluorescent lamps in 1939 at both the New York World's Fair and the Golden Gate Exposition in San Francisco. These early lamps gave twice the energy efficiency of the best incandescent designs. Production of fluorescent lamps, slow at first, soon soared as millions were installed in factories making equipment for the American military during World War 2.

  Lamp characteristics: Double-ended without bases. Flat presses with an exhaust tip near one press. A tungsten electrode, CC-6 configuration coated with emitter, is set at either end. A mercury pellet is loose inside the lamp. The clear T-7 glass envelope has a phosphor coating covering about 3 inches (8 cm) of the lamp near the center.

  date made

  ca. 1934

  Date made

  ca 1934

  manufacturer

  General Electric

  ID Number

  1997.0388.41

  accession number

  1997.0388

  catalog number

  1997.0388.41

  Data Source

  National Museum of American History

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  Electrically Welded Specimen, Bicycle Top Tubing

  Description

  This bicycle’s welded steel top tube was created using Elihu Thomson’s electric welding apparatus (see object number MC*181724). Welding samples demonstrated potential industrial applications of electric welding, and illustrations of these samples were published in journals, brochures, and advertisements. Elihu Thomson’s invention of electric welding in 1885 resulted in numerous applications including the manufacture of automobile parts, tools, screws, ball bearings, and wire lines. Thomson’s welding apparatus passed an electric current through two pieces of metal pressed together. Resistance to the current at the contact point between the metal pieces created heat and welded the metals together.

  Scientist and inventor Elihu Thomson (1853-1937) played a prominent role in the industrialization and electrification of America with over 700 patents in his name. His inventions and patents helped change the nature of industry in the United States and included the “uniflow” steam engine, automobile muffler, producing fused quartz, stereoscopic x-ray pictures, electric arc lamps, lightning arrestors, and perhaps most notably—the process of electrical welding. Thomson and partner Edwin Houston established the Thomson-Houston Electric Company in 1883. In 1892 Thomson-Houston merged with the Edison Electric Company to form General Electric.

  date made

  1886

  maker

  Thomson, Elihu

  ID Number

  EM.181672

  catalog number

  181672

  accession number

  33015

  Data Source

  National Museum of American History

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  Whaleback steamer Frank Rockefeller

  Description

  Scotsman Alexander McDougall (1845-1924) was a ship captain on the Great Lakes when he patented the idea of a “whaleback” ship in the early 1880s. With low, rounded hulls, decks and deckhouses, his invention minimized water and wind resistance. Between 1887 and 1898, 44 whalebacks were produced: 23 were barges and 21 were steamships, including one passenger vessel.

  Frank Rockefeller was the 36th example of the type, built in 1896 at a cost of $181,573.38 at McDougall’s American Steel Barge Company in Superior, WI. One of the larger examples of the type, Rockefeller measured 380 feet in length, drew 26 feet of water depth and had a single propeller.

  Although it belonged to several different owners over its 73-year working life, the Rockefeller spent most of its early life transporting iron ore from mines in Lake Superior to steel mills along the shores of Lake Erie. In 1927, new owners put it in service as a sand dredge that hauled landfill sand for the 1933 Chicago World’s Fair. From 1936-1942 the old ship saw service as a car carrier for another set of owners. In 1942 the ship wrecked in Lake Michigan, but wartime demand for shipping gave the old ship repairs, a new name (Meteor) and a new life as a tanker transporting petroleum products for more than 25 years. In 1969 Meteor ran aground off the Michigan coast, Instead of repairing the old ship, the owners sold it for a museum ship at Superior, WI. In poor condition today, Meteor is the last surviving example of McDougal’s whaleback or “pig boat”.

  Date made

  1961

  date the Frank Rockefeller was built

  1896

  patentee of whaleback ships

  McDougall, Alexander

  company that built the Frank Rockefeller

  American Steel Barge Company

  ID Number

  TR.318433

  catalog number

  318433

  accession number

  236171

  Data Source

  National Museum of American History

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  Display of Edison experimental light bulb filament

  Date made

  1881

  maker

  Hammer, William J.

  Edison, Thomas Alva

  ID Number

  EM.320526

  catalog number

  320526

  accession number

  241402

  Data Source

  National Museum of American History

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  Electrically Welded Specimen, Bicycle Pedal

  Description

  This bicycle’s welded steel pedal was created using Elihu Thomson’s electric welding apparatus (see object number MC*181724). Welding samples demonstrated the potential industrial applications of electric welding, and illustrations of these samples were published in journals, brochures, and advertisements. Elihu Thomson’s invention of electric welding in 1885 resulted in numerous industrial applications including the manufacture of automobile parts, tools, screws, ball bearings, and wire lines. Thomson’s welding apparatus pressed two pieces of metal together while an electric current ran through the metal. Resistance to the current at the contact point between the metal pieces created heat and welded the metals together.

  Scientist and inventor Elihu Thomson (1853-1937) played a prominent role in the industrialization and electrification of America with over 700 patents in his name. His inventions and patents helped change the nature of industry in the United States and included the “uniflow” steam engine, automobile muffler, producing fused quartz, stereoscopic x-ray pictures, electric arc lamps, lightning arrestors, and perhaps most notably—the process of electrical welding. Thomson and partner Edwin Houston established a variety of companies to manage his industrial interests. In 1892, his Thomson-Houston Electric Company merged with the Edison Electric Company to form General Electric.

  Location

  Currently not on view

  date made

  1886

  maker

  Thomson, Elihu

  ID Number

  EM.181681

  catalog number

  181681

  accession number

  33015

  Data Source

  National Museum of American History

• 

  Lewis Latimer Patent Drawing

  Description

  Electricity pioneer Lewis Latimer drew this component of an arc lamp, an early type of electric light, for the U.S. Electric Lighting Company in 1880.

  The son of escaped slaves and a Civil War veteran at age sixteen, Latimer trained himself as a draftsman. His technical and artistic skills earned him jobs with Alexander Graham Bell and Thomas Edison, among others. An inventor in his own right, Latimer received numerous patents and was a renowned industry expert on incandescent lighting.

  Location

  Currently not on view

  Date made

  1880-07-25

  maker

  Latimer, Lewis H.

  ID Number

  1983.0458.21

  accession number

  1983.0458

  catalog number

  1983.0458.21

  Data Source

  National Museum of American History

• 

  Ship Tools from the Propeller Indiana, Hand Truck

  Description

  These hand tools were found in the engine and boiler space belowdecks in Indiana’s hold, indicating that they were used for the machinery. The crew used the shovel to add coal to the fires.

  The hand truck—virtually identical to modern examples—is one of four found aboard Indiana and used for moving cargo into, out of, and around the cargo hold of the ship. This hand truck was the artifact that actually identified the vessel when it was located in 1972, for the words “PROPR INDIANA” were stamped into its handle. The other three had different ships’ names stamped on them, indicating that they were secondhand or borrowed equipment.

  Date made

  ca 1858

  when the Indiana was found

  1972

  ID Number

  1994.0033.01

  catalog number

  1994.0033.01

  accession number

  1994.0033

  Data Source

  National Museum of American History

• 

  Model of Bucyrus-Erie Stripping Shovel

  Description

  In 1960, the Bucyrus-Erie Company of South Milwaukee, Wisconsin, presented this 14-inch-high, scale model of what was to become the world's largest stripping shovel to President Dwight D. Eisenhower. Later that year, the President transferred this gift to the Smithsonian Institution. The Bucyrus-Erie Company had custom-designed this monster machine for the Peabody Coal Company. Bucyrus-Erie engineers anticipated that they would need two years to manufacture the behemoth, and an additional six months to assemble it at the site of the open-pit mine. (They planned to ship the machine's parts in over 250 railcars.) When finished, the shovel would weigh 7,000 tons, soar to the roofline of a 20-story building (some 220 feet high), and be able to extend its enormous 115-cubic-yard dipper over 460 feet, or about the length of an average city block. (The dipper's capacity would equal that of about six stand-sized dump trucks.) Fifty electric motors-ranging from 1/4 to 3,000 horsepower-would power the shovel, which was designed to be controlled by a single operator, perched in a cab five stories high. Publicists for Bucyrus-Erie called this the "largest self-powered mobile land vehicle ever built."

  Location

  Currently not on view

  date made

  1960

  recipient

  Eisenhower, Dwight D.

  maker

  Bucyrus-Erie Company

  ID Number

  MC.317688

  catalog number

  317688

  accession number

  231557

  Data Source

  National Museum of American History

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  Electrically Welded Specimen, Bicycle Head Lug

  Description

  This bicycle’s welded steel head post was created using Elihu Thomson’s electric welding apparatus (see object number MC*181724). Welding samples demonstrated the potential industrial applications of electric welding, and illustrations of these samples were published in journals, brochures, and advertisements. Elihu Thomson’s invention of electric welding in 1885 resulted in numerous industrial applications including the manufacture of automobile parts, tools, screws, ball bearings, and wire lines. Thomson’s welding apparatus pressed two pieces of metal together while an electric current ran through the metal. Resistance to the current at the contact point between the metal pieces created heat and welded the metals together.

  Scientist and inventor Elihu Thomson (1853-1937) played a prominent role in the industrialization and electrification of America with over 700 patents in his name. His inventions and patents helped change the nature of industry in the United States and included the “uniflow” steam engine, automobile muffler, producing fused quartz, stereoscopic x-ray pictures, electric arc lamps, lightning arrestors, and perhaps most notably—the process of electrical welding. Thomson and partner Edwin Houston established a variety of companies to manage his industrial interests. In 1892, his Thomson-Houston Electric Company merged with the Edison Electric Company to form General Electric.

  Location

  Currently not on view

  date made

  1886

  maker

  Thomson, Elihu

  ID Number

  EM.181679

  catalog number

  181679

  accession number

  33015

  Data Source

  National Museum of American History

• 

  Electrically Welded Specimen, Bicycle Rear Forks

  Description

  This bicycle’s welded steel rear fork was created using Elihu Thomson’s electric welding apparatus (see object number MC*181724). Welding samples demonstrated the potential industrial applications of electric welding, and illustrations of these samples were published in journals, brochures, and advertisements. Elihu Thomson’s invention of electric welding in 1885 resulted in numerous industrial applications including the manufacture of automobile parts, tools, screws, ball bearings, and wire lines. Thomson’s welding apparatus pressed two pieces of metal together while an electric current ran through the metal. Resistance to the current at the contact point between the metal pieces created heat and welded the metals together.

  Scientist and inventor Elihu Thomson (1853-1937) played a prominent role in the industrialization and electrification of America with over 700 patents in his name. His inventions and patents helped change the nature of industry in the United States and included the “uniflow” steam engine, automobile muffler, producing fused quartz, stereoscopic x-ray pictures, electric arc lamps, lightning arrestors, and perhaps most notably—the process of electrical welding. Thomson and partner Edwin Houston established a variety of companies to manage his industrial interests. In 1892, his Thomson-Houston Electric Company merged with the Edison Electric Company to form General Electric.

  date made

  1886

  maker

  Thomson, Elihu

  ID Number

  EM.181675

  catalog number

  181675

  accession number

  33015

  Data Source

  National Museum of American History

• 

  Model of Snagboat Charles H. West

  Description

  Introduced in the early 19th century, snag boats were designed to clear trees, stumps, and other obstructions from navigable rivers and channels. Most were in the form of a catamaran, with two parallel hulls between which trees were hauled in, cut up, and disposed of on land.

  Designed by the Army Corps of Engineers, the federal agency responsible for maintaining the national waterways, Charles H. West was built at Nashville, Tenn., in 1933-34 by the Nashville Bridge Co. at a cost of $227,260.48. It measured 170’ in length and 38’ in beam but only drew 4’-6” of water. Instead of a catamaran design, the West had a normal, shallow sternwheeler hull. At the flat or scow bow, two A-frames hauled snags up a ramp for disposal. It cleared snags along the lower Mississippi River for many years.

  In 1969, the West was sold to a private party and converted to the restaurant boat Lt. Robert E. Lee in St. Louis, Mo. the following year. The name was fitting. Although best known as a Confederate general, in the late 1830s, Lee had been an officer in the Corps of Engineers. His work installing pilings and wing dams had helped the Mississippi currents to clear silt and keep open the main St. Louis landing.

  Moored on the Mississippi near the St. Louis Arch, the Lee was a successful restaurant until a 1993 flood devastated the waterfront. After several failed attempts to reopen, the vessel was auctioned on December 19, 2008, for $200,000. Its new owners plan to renovate and reopen the famous ship once again as a restaurant and nightclub in St. Louis.

  Date made

  1966

  ID Number

  TR.326538

  catalog number

  326538

  accession number

  265606

  Data Source

  National Museum of American History

• 

  Edison chemical-type electric meter

  Date made

  ca1882

  ca 1882

  associated person

  Edison, Thomas Alva

  maker

  Edison Electric Co.

  ID Number

  EM.262476

  catalog number

  262476

  accession number

  52260

  Data Source

  National Museum of American History

• 

  Scow Schooner Milton

  Description

  The 102-foot three-masted scow schooner Milton was built by Ellsworth & Davidson at Milwaukee, Wis., in 1867. It spent 20 years hauling lumber on Lake Michigan, along with hundreds of other small boats nicknamed the “mosquito fleet.” Built to carry as much cargo as possible, many of these flat-bottom boats did not sail very well.

  The Milton collided with the ship W.H. Hinsdale at Milwaukee in December 1867, causing about $100 in damage to each vessel. It also ran aground twice during its career.

  On 8 September 1885, while transporting a cargo of cedar posts and cordwood, the Milton sank off Two Rivers, Wis., during an autumn storm. The entire crew of five men was lost—three of them brothers.

  Date made

  1962

  Milton built

  1867

  ID Number

  TR.321529

  catalog number

  321529

  accession number

  246222

  Data Source

  National Museum of American History

• 

  Electrically Welded Specimen, Bicycle Tapered Head Tube

  Description

  This bicycle’s welded steel tapered head tube was created using Elihu Thomson’s electric welding apparatus (see object number MC*181724). Welding samples demonstrated the potential industrial applications of electric welding, and illustrations of these samples were published in journals, brochures, and advertisements. Elihu Thomson’s invention of electric welding in 1885 resulted in numerous industrial applications including the manufacture of automobile parts, tools, screws, ball bearings, and wire lines. Thomson’s welding apparatus pressed two pieces of metal together while an electric current ran through the metal. Resistance to the current at the contact point between the metal pieces created heat and welded the metals together.

  Scientist and inventor Elihu Thomson (1853-1937) played a prominent role in the industrialization and electrification of America with over 700 patents in his name. His inventions and patents helped change the nature of industry in the United States and included the “uniflow” steam engine, automobile muffler, producing fused quartz, stereoscopic x-ray pictures, electric arc lamps, lightning arrestors, and perhaps most notably—the process of electrical welding. Thomson and partner Edwin Houston established the Thomson-Houston Electric Company in 1883. In 1892 Thomson-Houston merged with the Edison Electric Company to form General Electric.

  Location

  Currently not on view

  date made

  1886

  maker

  Thomson, Elihu

  ID Number

  EM.181673

  catalog number

  181673

  accession number

  33015

  Data Source

  National Museum of American History

• 

  Edison underground electrical junction box

  Date made

  1885

  ID Number

  EM.314917

  catalog number

  314917

  accession number

  212336

  Data Source

  National Museum of American History

• 

  Experimental Sulfur Lamp

  Description

  New lighting inventions occasionally appear from unexpected directions. The development of this microwave-powered lamp provides a case in point. In 1990 Fusion Systems was a small company with a successful, highly specialized product, an innovative ultraviolet (UV) industrial lighting system powered by microwaves.

  Discharge lamps typically use electrodes to support an electric arc. Tungsten electrodes are most common, so materials that might erode tungsten can't be used in the lamp and care must be taken to not melt the electrodes. Fusion's lamp side-stepped this problem by eliminating electrodes entirely. Microwave energy from an external source energized the lamp. This opened the way for experiments with non-traditional materials, including sulfur.

  During the 1980s engineer Michael Ury, physicist Charles Wood, and their colleagues experimented several times with adapting their UV system to produce visible light without success. In 1990, they tried placing sulfur in a spherical bulb instead of a linear tube. Sulfur could give a good quality light, but did not work well in the linear tube. Other elements only gave marginal results in the spherical bulb. But when they tested sulfur in the spherical lamp they found what they hoped for: lots of good visible light with little invisible UV or infrared rays.

  They began setting up "crude" lamps like this one (one of the first ten according to Ury) in order to learn more about the new light source. In the mid-1990s Fusion began trying to sell their sulfur bulbs with limited success. The lamp rotated at 20,000 rpm so that the temperature stayed even over the surface, and a fan was needed for cooling. The fan and spin motor made noise and reduced energy efficiency of the total system. Then they found that the bulbs lasted longer than the magnetrons used to generate the microwaves that powered them. Finding inexpensive magnetrons proved too difficult, and the company stopped selling the product in 2002.

  Lamp characteristics: A quartz stem with notch near the bottom serves as the base. The notch locks the lamp into its fixture. The sphere has an argon gas filling, and the yellow material is sulfur condensed on the inner lamp wall. The pattern of condensation indicates lamp was burned base-down. Tipless, G-shaped quartz envelope.

  Date made

  ca 1990

  date made

  ca. 1990

  maker

  Ury, Michael G.

  ID Number

  1992.0467.01

  catalog number

  1992.0467.01

  accession number

  1992.0467

  Data Source

  National Museum of American History

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  Ship Tools from the Propeller Indiana, Shovel

  Description

  All the hand tools were found in the engine and boiler space below decks in Indiana’s hold, indicating that they were used for the machinery. The crew used the shovel to add coal to the fires.

  date made

  mid-1800s

  when the Indiana was found

  1972

  ID Number

  1979.1030.59

  accession number

  1979.1030

  catalog number

  1979.1030.59

  Data Source

  National Museum of American History

• 

  Experimental integral compact fluorescent lamp

  Description

  As energy prices soared in the 1970s, lamp makers focused research efforts on raising the energy efficiency of electric lamps. A great deal of effort by many researchers went into designing small fluorescent lamps that might replace a regular incandescent lamp. These efforts led to modern compact fluorescent lamps that use bent or connected tubes, but many other designs were tried. This experimental "partition lamp" from 1978 shows one such design.

  Soon after the 1939 introduction of linear fluorescent lamps, inventors began receiving patents for smaller lamps. But they found that the small designs suffered from low energy efficiency and a short life-span. Further research revealed that energy efficiency in fluorescent lamps depends in part on the distance the electric current travels between the two electrodes, called the arc path. A long arc path is more efficient than a short arc path. That's why fluorescent tubes in stores and factories are usually 8 feet (almost 3 meters) long.

  Inventors in the 1970s tried many ways of putting a long arc path into a small lamp. In this case there are thin glass walls inside the lamp, dividing it into four chambers. Each chamber is connected in such a way that the electric current travels the length of the lamp four times when moving from one electrode to the other. So the arc path is actually four times longer than the lamp itself, raising the energy efficiency of the lamp. This unit was made by General Electric for experiments on the concept, though other makers were also working on partition lamps.

  While the partition design works, it proved to be expensive to manufacture and most lamp makers decided to use thin tubes that could be easily bent and folded while being made.

  Lamp characteristics: No base. Two stem assemblies each have tungsten electrodes in a CCC-6 configuration with emitter. Welded connectors, 3-piece leads with lower leads made of stranded wire. Bottom-tipped, T-shaped envelope with internal glass partition that separates the internal space into four connected chambers. Partition is made of two pieces of interlocked glass and is not sealed into the envelope. All glass is clear. No phosphors were used since the experimenter wanted to study the arc path.

  Date made

  ca 1978

  date made

  ca. 1978

  maker

  General Electric Corporate Research & Development Laboratory

  ID Number

  1998.0050.16

  accession number

  1998.0050

  catalog number

  1998.0050.16

  Data Source

  National Museum of American History

• 

  Steamship John Heckmann’s Steam Whistle

  Description

  Ships’ steam whistles were powered by steam lines from the boilers. They were used to signal other ships or the shore, to announce a vessel’s presence or its intentions. Whistles were especially useful when approaching or leaving a port or landing, or in foggy or dark waters.

  This whistle originally belonged to the 1895 Army Corps of Engineers towboat Gen. H. L. Abbot, built at Jeffersonville, Ind. and named after a famous general in the U. S. Army Corps. In 1906 it was renamed Gen. J. H. Simpson, after another Army Corps staff. The vessel was dismantled in 1919.

  The cabin fittings, the ship’s wheel, and the whistle were purchased by Edward Heckmann for his new Missouri River packet boat, the John Heckmann. The Heckmann was 165’ long and 30’-6” in beam but only drew 4’-6” of water. Uniquely, the Heckmann had two independently operated or “split” sternwheels, which provided much greater maneuverability than a single, wide sternwheel could offer. Its boilers came from the hulk of the steamer Majestic, which had wrecked in 1914 at Chain of Rocks, St. Louis. The Heckmann’s engines were acquired from the obsolete Army Corps sternwheel towboats Aux Vasse and Isle de Bois. Employed in the packet trade between St Louis and Jefferson City, the Heckmann lost money because of competition from the railroads.

  The John Heckmann was later converted to a Missouri River 1,200-passenger excursion boat by the Heckmann family. Operating on the Missouri as far north as Sioux City, Iowa, its normal summer route was between Kansas City and Omaha, Nebraska. In winter, it resumed packet service on the Cumberland, Tennessee, Illinois, and Ohio Rivers. Wrecked in an ice breakup at its homeport of Hermann, Mo. in 1928, it was dismantled.

  date made

  1895

  purchased whistle

  Heckmann, Edward

  ID Number

  1979.0542.01

  accession number

  1979.0542

  catalog number

  1979.0542.01

  Data Source

  National Museum of American History

• 

  Model of Adams Station hydroelectric turbine

  associated institution

  Faesch & Piccard

  ID Number

  EM.315850

  catalog number

  315850

  accession number

  221414

  Data Source

  National Museum of American History

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