Work

The tools, rules, and relationships of the workplace illustrate some of the enduring collaborations and conflicts in the everyday life of the nation. The Museum has more than 5,000 traditional American tools, chests, and simple machines for working wood, stone, metal, and leather. Materials on welding, riveting, and iron and steel construction tell a more industrial version of the story. Computers, industrial robots, and other artifacts represent work in the Information Age.

But work is more than just tools. The collections include a factory gate, the motion-study photographs of Frank and Lillian Gilbreth, and more than 3,000 work incentive posters. The rise of the factory system is measured, in part, by time clocks in the collections. More than 9,000 items bring in the story of labor unions, strikes, and demonstrations over trade and economic issues.

Telegraph message, printed in Morse code, transcribed and signed by Samuel F. B. Morse.
Description
Telegraph message, printed in Morse code, transcribed and signed by Samuel F. B. Morse. This message was transmitted from Baltimore, Maryland, to Washington, D.C., over the nation's first long-distance telegraph line.
In 1843, Congress allocated $30,000 for Morse (1791-1872) to build an electric telegraph line between Washington and Baltimore. Morse and his partner, Alfred Vail (1807-1859), completed the forty-mile line in May 1844. For the first transmissions, they used a quotation from the Bible, Numbers 23:23: "What hath God wrought," suggested by Annie G. Ellsworth (1826-1900), daughter of Patent Commissioner Henry L. Ellsworth (1791-1858) who was present at the event on 24 May. Morse, in the Capitol, sent the message to Vail at the B&O Railroad's Pratt Street Station in Baltimore. Vail then sent a return message confirming the message he had received.
The original message transmitted by Morse from Washington to Baltimore, dated 24 May 1844, is in the collections of the Library of Congress. The original confirmation message from Vail to Morse is in the collections of the Connecticut Historical Society.
This tape, dated 25 May, is a personal souvenir transmitted by Vail in Baltimore to Morse in Washington the day following the inaugural transmissions. The handwriting on the tape is that of Morse himself. Found in Morse’s papers after his death the tape was donated to the Smithsonian in 1900 by his son Edward, where it has been displayed in many exhibitions.
Location
Currently not on view
date made
1844-05-25
1844-05-24
associated date
1844-05-24
donated
1900-04-18
associated person
Morse, Samuel Finley Breese
maker
Morse, Samuel Finley Breese
ID Number
EM.001028
catalog number
001028
accession number
65555
This patent model demonstrates an invention for a carpenter's type-cutter and protractor; the invention was granted patent number 2894. The cutter and protractor was a machine for cutting multiple copies from a single pattern.
Description (Brief)
This patent model demonstrates an invention for a carpenter's type-cutter and protractor; the invention was granted patent number 2894. The cutter and protractor was a machine for cutting multiple copies from a single pattern. Typically, it was to be used in making wood type, which could be enlarged or reduced, extended or compressed, thrown into perspective, or turned into "grotesque type of any given fashion from the same plain pattern."
Location
Currently not on view
date made
ca 1842
patent date
1842-12-31
maker
Carpenter, Luman
ID Number
GA.89797.002894
patent number
002894
accession number
089797
catalog number
GA*89797.002894
This patent model demonstrates an invention for a typecasting machine which was granted patent number 3324.
Description (Brief)
This patent model demonstrates an invention for a typecasting machine which was granted patent number 3324. The patent details improvements to David Bruce's earlier pivotal typecaster, specifically, adjustable parts to the mold, a method of opening the mold and tilting the matrix and the piston to force metal into the mold.
Location
Currently not on view
Date made
1843
date made
ca 1843
patent date
1843-11-06
maker
Bruce, Jr., David
ID Number
GA.89797.003324
accession number
89797
patent number
003324
catalog number
GA*89797.003324
This patent model demonstrates an invention for a typecasting machine which was granted patent number 4072. The patent details further developments on David Bruce's pivotal typecaster.Currently not on view
Description (Brief)
This patent model demonstrates an invention for a typecasting machine which was granted patent number 4072. The patent details further developments on David Bruce's pivotal typecaster.
Location
Currently not on view
date made
ca 1845
patent date
1845-06-07
maker
Bruce, Jr., David
ID Number
GA.89797.004072
accession number
089797
patent number
004072
catalog number
GA*89797.004072
This patent model demonstrates an invention for a method of painting on a sheet of glass coated with linseed oil and ground silica, which gave a luminous appearance to the painting. The invention was granted patent number 5495.
Description (Brief)
This patent model demonstrates an invention for a method of painting on a sheet of glass coated with linseed oil and ground silica, which gave a luminous appearance to the painting. The invention was granted patent number 5495. The inventor named the process Tachygraphic Painting. J. Bishop Hall of Philadelphia may have been the same as the John Bishop Hall of New York whose invention is also listed here.
Location
Currently not on view
date made
ca 1848
patent date
1848-03-28
maker
Hall, J. Bishop
ID Number
GA.89797.005495
accession number
089797
patent number
005495
005495
catalog number
GA*89797.005495
This patent model demonstrates an invention for a book trimmer which was granted patent number 5523. The machine is for cutting the edges of books, and combines a sliding cutter with a turning and adjustable book holder and an adjustable table.Currently not on view
Description (Brief)
This patent model demonstrates an invention for a book trimmer which was granted patent number 5523. The machine is for cutting the edges of books, and combines a sliding cutter with a turning and adjustable book holder and an adjustable table.
Location
Currently not on view
date made
ca 1848
patent date
1848-04-18
maker
Markham, Larnard F.
ID Number
GA.89797.005523
catalog number
GA*89797.005523
accession number
089797
patent number
005523
This patent model demonstrates an invention for James Duncan's Rotary Type Rubber which smoothed the rough edges on freshly cast type. The invention was granted patent number 5420.Currently not on view
Description (Brief)
This patent model demonstrates an invention for James Duncan's Rotary Type Rubber which smoothed the rough edges on freshly cast type. The invention was granted patent number 5420.
Location
Currently not on view
date made
ca 1848
patent date
1848-01-25
maker
Duncan, James L.
ID Number
GA.89797.005420
accession number
089797
patent number
005420
catalog number
GA*89797.005420
This model was submitted to the U.S. Patent Office with the application for the patent issued to R. F. Loper, of Philadelphia, Pennsylvania, August 28, 2849, no.
Description
This model was submitted to the U.S. Patent Office with the application for the patent issued to R. F. Loper, of Philadelphia, Pennsylvania, August 28, 2849, no. 6673.
This is a nicely made working model of a 2-cylinder vertical marine engine directly connected to a 2-throw propeller shaft, upon which is mounted a 4-blade propeller. The model is complete with boiler, feed-water pump, condenser, and condenser air pump. The peculiar feature of the invention is the manner of connecting the air pump to the engine and the method of quickly converting the engine from condensing to noncondensing operation.
The engine represented consists of a heavy bed plate shaped to fit the hull of a vessel, upon which are attached the bearing of the propeller shaft and the frame that supports the cylinders. The cylinders are double-acting are “reversed from the ordinary position of engines, the piston rod running down through the lower head and connecting by the usual connecting rod with the cranks on the shaft below.” “The valves of the engine take their motion from eccentrics on the main shaft coupled with a valve lever by proper eccentric rods. The lever is affixed to its axis by its center and is made double, so that the eccentric rod can be thrown to either end to reverse the motion or may be wholly detached.” The cur-off is worked directly from the cross head. The air pump is driven by a beam and connecting rod, which is driven by a crankpin upon a gear wheel that engages a pinion on the crankshaft. The ratio of the gears is such that the air pump performs only one stroke to two of the engine. The air pump communicates with the condenser into which the exhaust pipe opens. The escape pipe is also connected with the condenser, which, when open, allows the steam to escape without condensing.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
Location
Currently not on view
date made
1849
patent date
1849-08-28
inventor
Loper, R. F.
ID Number
ER.309198
accession number
89797
catalog number
309198
patent number
6,673
This model was submitted to the U.S. Patent Office with the application for the patent issued to Horatio Allen, of New York, New York, August 29, 1848, no.
Description
This model was submitted to the U.S. Patent Office with the application for the patent issued to Horatio Allen, of New York, New York, August 29, 1848, no. 5745.
This is an adjustable drop cut-off valve gear in which a poppet valve is raised by a lift rod but is permitted to return to its seat sooner or more rapidly than the lift rod returns.
The model represents a poppet steam valve raised from its seat by an arm fixed at right angles to a lift rod, which works vertically and parallel to the valve stem. Upon the face of the arm is a moveable block a part of the upper surface of which is parallel to the face of the arm and a part of which is a steep curve. All the movement of the valve is transmitted to it through a roller on its stem, which rolls on the surface of this block. The block is so linked with a vibratory rod, which receives its motion from the cross head of the engine, that the block will move along the face of the lift rod arm and bring different points of its surface under the roller of the valve stem. By proper adjustment the roller will rest upon the flat part of the block and move with the lift rod as it is rising and the valve is opening, then the block moves so that the roller comes to the edge of the inclined portion and rolls down the incline permitting the valve to drop more quickly than the lift rod. The movement of the block on the arm and consequently the point of cut-off are fully adjustable.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
Location
Currently not on view
date made
1848
patent date
1848-08-29
ID Number
MC.308643
catalog number
308643
accession number
89797
patent number
5,745
This model was submitted to the U.S. Patent Office with the application for the patent issued to Horatio Allen, of New York, New York, April 30, 1842, no.
Description
This model was submitted to the U.S. Patent Office with the application for the patent issued to Horatio Allen, of New York, New York, April 30, 1842, no. 2597.
This model represents a valve gear in which separate steam chests are employed for the head-end and crank-end main steam valves. The supply of steam to each of these steam chests is controlled by additional cut-off valves, the movement of which is adjustable. The inventor refers to this invention as an improvement in the valve gear patented by him August 21, 1841 (patent number 2227).
The model shows a portion of the cylinder of a horizontal engine with only the piston rod and cross head represented. A steam chest in which are located the ports leading to the inner or main steam chests is shown in section, revealing the cut-off valves on their seats. These cut-off valves are plain flat plates connected to opposite ends of a beam, which receives a vibratory motion from the cross head of the engine. The beam and its rock shaft are picoted in a lever by which the pivot can be moved and the time of cut-of varied. This the inventor calls “cut-off with movable rock shaft.” He suggests that a similar result can be obtained by constructing the cut-off ports in a movable plate which he calls “cut-off with single adjustable seat.”
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
Location
Currently not on view
date made
1842
patent date
1842-04-30
inventor
Allen, Horatio
ID Number
MC.308640
catalog number
308640
accession number
89797
patent number
2,597
This model was submitted to the U.S. Patent Office with application for Patent no. 4800, issued October 7, 1846.This engine is very similar to the Perry engine of 1844 (US National Museum accession number 309253).
Description
This model was submitted to the U.S. Patent Office with application for Patent no. 4800, issued October 7, 1846.
This engine is very similar to the Perry engine of 1844 (US National Museum accession number 309253). It differs in that the cylinder is water-jacketed and the hot cooling water is used to heat the fuel retort. Ignition is effected by heated platinum exposed to or separated from the explosive mixture by a valve.
The model shows a horizontal double-acting engine completely water-jacketed. Beside the cylinder is the retort for generating the vapors. Air is mixed with the vapor in a valve box above the retort, and valves operated by cams from a lay shaft admit the explosive mixture to passages leading to the cylinder. The gas is ignited by incandescent platinum, and combustion continues during about one-third of the stroke, the expansion of the products of combustion forcing the piston to the end of the stroke.
To start the engine it was necessary to heat the water about the retort to generate the vapor and to heat the igniter. When running, the engine developed sufficient heat for both purposes.
Perry designed this engine so that the water served not only to cool the cylinder but also to lubricate the piston and piston rod.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
Location
Currently not on view
date made
1846
patent date
1846-10-07
inventor
Perry, Stuart
ID Number
ER.251278
accession number
48865
catalog number
251278
patent number
4,800
This patent model demonstrates an invention for a self-inking press which was granted number 3917. The press has a vertical bed and platen, and sheet grippers traveling on an endless chain. The model is damaged.Currently not on view
Description (Brief)
This patent model demonstrates an invention for a self-inking press which was granted number 3917. The press has a vertical bed and platen, and sheet grippers traveling on an endless chain. The model is damaged.
Location
Currently not on view
date made
ca 1845
patent date
1845-02-20
maker
Kneeland, J. C.
ID Number
GA.89797.003917
accession number
089797
patent number
003917
catalog number
GA*89797.003917
This patent model demonstrates an invention for a flatbed cylinder press which was granted patent number 3551. This presses’ tapered bearers were attached to the bed to prevent slurring of the impression at the ends of the formCurrently not on view
Description (Brief)
This patent model demonstrates an invention for a flatbed cylinder press which was granted patent number 3551. This presses’ tapered bearers were attached to the bed to prevent slurring of the impression at the ends of the form
Location
Currently not on view
date made
ca 1844
patent date
1844-04-17
patentee
Hoe, Richard March
maker
Hoe, Richard March
ID Number
GA.89797.003551
accession number
089797
catalog number
GA*89797.003551
patent number
003551
This patent model demonstrates an invention for a double-ended press; it was granted patent number 2793. The invention included a method of bringing two alternating beds into printing position.
Description (Brief)
This patent model demonstrates an invention for a double-ended press; it was granted patent number 2793. The invention included a method of bringing two alternating beds into printing position. The patent could be applied either to a bed-and-platen press or to another cylinder press.
Location
Currently not on view
date made
ca 1842
patent date
1842-09-30
maker
Northrup, Joel G.
ID Number
GA.89797.002793
patent number
002793
accession number
89797
catalog number
GA*89797.002793
This model was part of the application to the U.S. Patent Office for the patent issued to Frederick E. Sickels, of New York, New York, May 20, 1842, no. 2631.The Sickels valve gear is generally considered to be the first successful and practical drop cut-off.
Description
This model was part of the application to the U.S. Patent Office for the patent issued to Frederick E. Sickels, of New York, New York, May 20, 1842, no. 2631.
The Sickels valve gear is generally considered to be the first successful and practical drop cut-off. It was widely used on the engines of the side-wheel steamboats up to the beginning of the 20th century and was the forerunner of the many subsequent designs of drop cut-off valve gears. This valve gear provides a means of rapidly cutting off the admission of steam to the cylinder of the engine at any point in the stroke of the piston. It accomplishes this by tripping or disengaging the valve from the valve gear and permitting it to drop to its seat under the impulse of a spring. A plunger operating in a water chamber gradually retards the falling valve and brings it to rest without shock.
The Sickels valve is of the conical or poppet type, working vertically with the valve stem directed upward. Motion is transmitted to the valve through a lift rod working up and down continuously parallel to the valve stem. Spring clips on the lift rod engage with the projections on the valve stem and lift and open the valve, until the clips come into contact with wedge-shaped blocks, which spread the clips and permit the valve to fall back to its closed position. The wedge-shaped disengaging block can be placed so as to cause the valve to disengage and close at any desired instant during the up or down movement of the lift rod. A spring bearing upon the top of the valve stem causes it to close rapidly, while a plunger or piston attached to the underside of the valve and working in a chamber of water retards the valve gradually and permits it to close without shock. The lift rod may be actuated by an eccentric or, as was more usually the case, by cam and follower of the “alligator” jaw or steamboat type of gear.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
Location
Currently not on view
date made
1842
patent date
1842-05-20
ID Number
MC.308650
catalog number
308650
accession number
89797
patent number
2,631
This patent model demonstrates an invention for various improvements on the English presses of Applegath, Napier, and others, especially methods of stopping and reversing the press bed in its travel and of raising the impression cylinders to allow the bed to pass underneath.
Description (Brief)
This patent model demonstrates an invention for various improvements on the English presses of Applegath, Napier, and others, especially methods of stopping and reversing the press bed in its travel and of raising the impression cylinders to allow the bed to pass underneath. The invention was granted patent number 2629.
This was the patent for Hoe's Pony press, built specifically for the New York Sun to print 5-6,000 impressions per hour. Richard March Hoe (1812-1886) was the son of Robert Hoe, founder of the original company, which he took over in 1833 after his father's death. Among many outstanding inventions, his most famous press was the Lightning of 1846. He was also known for solicitous management of his employees, for whom he set up set up a free but compulsory apprentice school.
Location
Currently not on view (printing press fragment)
date made
ca 1842
patent date
1842-05-20
patentee
Hoe, Richard March
maker
Hoe, Richard March
ID Number
GA.11023
catalog number
GA*11023
accession number
48865
patent number
002629
In the nineteenth century, volunteer fire companies often commissioned paintings to decorate their hand-pumped fire engines for parades, competitions, and community events.
Description
In the nineteenth century, volunteer fire companies often commissioned paintings to decorate their hand-pumped fire engines for parades, competitions, and community events. Sometimes framed with elaborate carvings, they adorned the tall air chamber located at the middle or rear of a pumper. The paintings would often feature patriotic, heroic, or allegorical images to associate the volunteer companies with these lofty ideals.
The Weccacoe Fire Engine Company No.19 of Philadelphia, Pennsylvania commissioned this panel from John Woodside around 1840. The Weccacoe Fire Company was organized in 1800 as a hand engine company. It acquired a steam fire engine in 1859, which was replaced in 1864. It operated as a steam fire engine company until 1871 when Philadelphia’s paid firefighting department was established. This painting of the “Mermaid and Her Lover,” is likely a representation of the tale of Clytia the water nymph and her love for the god Apollo. Fire companies used neoclassical imagery to link their companies to the ancient ideals that the paintings depicted, in this case eternal love and loyalty. The use of neoclassical images also allowed artists to paint an idealized nude female form that would make their beloved engine especially eye-catching during parades.
Location
Currently not on view
date made
ca 1840
maker
Woodside, John Archibald
ID Number
2005.0233.0308
accession number
2005.0233
catalog number
2005.0233.0308
Alfred Vail made this key, believed to be from the first Baltimore-Washington telegraph line, as an improvement on Samuel Morse's original transmitter.
Description
Alfred Vail made this key, believed to be from the first Baltimore-Washington telegraph line, as an improvement on Samuel Morse's original transmitter. Vail helped Morse develop a practical system for sending and receiving coded electrical signals over a wire, which was successfully demonstrated in 1844.
Morse's telegraph marked the arrival of instant long-distance communication in America. The revolutionary technology excited the public imagination, inspiring predictions that the telegraph would bring about economic prosperity, national unity, and even world peace.
Date made
1844
used date
1844
demonstrator
Morse, Samuel Finley Breese
Vail, Alfred
maker
Vail, Alfred
Morse, Samuel Finley Breese
ID Number
EM.181411
catalog number
181411
accession number
31652
This patent model demonstrates an invention for a block-printing press for wallpaper and oilcloth; the invention was granted patent number 6404.
Description (Brief)
This patent model demonstrates an invention for a block-printing press for wallpaper and oilcloth; the invention was granted patent number 6404. Two sets of blocks, suspended over the paper, were mounted in a frame that moved laterally so that one was re-inked by brushes while the other delivered its impression. The paper traveled along a table transverse to the block frame.
Location
Currently not on view
date made
ca 1849
patent date
1849-05-01
maker
Shaw, William M.
Gould, Ezra
ID Number
GA.89797.006404
accession number
089797
patent number
006404
catalog number
GA*89797.006404
The traditional American leather firefighter’s helmet with its distinctive long rear brim, front shield, and crest adornment was first developed around 1821-1836 in New York City. Henry T.
Description
The traditional American leather firefighter’s helmet with its distinctive long rear brim, front shield, and crest adornment was first developed around 1821-1836 in New York City. Henry T. Gratacap, a New York City luggage maker by trade, is often credited as the developer of this style of fire helmet. Gratacap created a specially treated leather helmet with a segmented “comb” design that led to unparalleled durability and strength. The elongated rear brim (also known as a duckbill or beavertail) and front shield were 19th century innovations that remain the most identifiable feature of firefighter’s helmets. The body of the helmet was primarily designed to deflect falling debris, the rear brim prevented water from running down firefighters’ backs, and their sturdy crowns could aid, if necessary, in breaking windows.
Though most work hats from 1836 on were shaped in the familiar Gratacap style with a prominent rear brim, some companies like Trenton wore hats that deviated from this standard. This leather fire helmet was made by Cairns & Brother of New York, New York around 1840. Reminiscent of British “bobby” or pith helmets this helmet has a rounded “bowl” shape. The helmet is painted white overall, with eight combs painted gold and a black diamond pattern painted in between the combs. It has a metal eagle shield holder, and a leather shield that reads "Trenton 1 Hose Co./THC/EW.” The interlocking “THC” initials in the center of the shield stand for the “Trenton Hose Company.”
Location
Currently not on view
date made
1840
maker
Cairns & Brother
ID Number
2005.0233.0193
catalog number
2005.0233.0193
accession number
2005.0233
This fall evening event held by the young lady workers of Amoskeag Mill number 3 may have marked the need to use artificial light in the mills during the winter as the days got shorter.
Description
This fall evening event held by the young lady workers of Amoskeag Mill number 3 may have marked the need to use artificial light in the mills during the winter as the days got shorter. The artificial lighting elongated the workday, increasing owner profitability, but open flames created more dangerous conditions for workers.
date made
1848
ID Number
1995.0001.02
accession number
1995.0001
catalog number
1995.0001.02
This model was submitted to the U.S. Patent Office with the application for the patent issued to William A. Lighthall, of Albany, New York, October 23, 1849, no.
Description
This model was submitted to the U.S. Patent Office with the application for the patent issued to William A. Lighthall, of Albany, New York, October 23, 1849, no. 6811.
The model shows a combination of a horizontal cylinder with a vertical beam to which the engine’s force is applied between the fulcrum and the connecting rod to the engine crank. It permits locating the propelling machinery of a side-wheel steamboat low within the hull.
The model is a panel representing a horizontal cylinder with piston rod connecting to a short beam pivoted at a point below the level of the cylinder. From a short distance above the point at which the piston force is applied to the beam a long connecting rod connects to the crank on the engine shaft located above the cylinder and at the middle of its length. The location of the condenser below the cylinder and the location of the air pump and the manner of operating it are shown by the model.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
Location
Currently not on view
date made
1849
patent date
1849-10-23
inventor
Lighthall, William A.
ID Number
MC.308641
catalog number
308641
accession number
89797
patent number
6,811
This patent model demonstrates an invention for a machine which produced type by compression and cutting from rods of any metal; the invention was granted patent number 5049. The face was formed using a steel letter matrix or, for reversed type (type en creux), a steel punch.
Description (Brief)
This patent model demonstrates an invention for a machine which produced type by compression and cutting from rods of any metal; the invention was granted patent number 5049. The face was formed using a steel letter matrix or, for reversed type (type en creux), a steel punch. The model is a full-sized working machine. (Jean Petyt was from Paris, France.)
Location
Currently not on view
date made
ca 1847
patent date
1847-04-03
maker
Petyt, Jean Constant
ID Number
GA.89797.005049
accession number
089797
patent number
005049
catalog number
GA*89797.005049
The ship’s steam whistle was powered by a steam line from the boiler. It was used to signal other ships or the shore, to let them know of its presence or its intentions. It was especially useful when approaching or leaving port, or in foggy or dark waters.
Description
The ship’s steam whistle was powered by a steam line from the boiler. It was used to signal other ships or the shore, to let them know of its presence or its intentions. It was especially useful when approaching or leaving port, or in foggy or dark waters.
Date made
1848
ID Number
1982.0241.01
accession number
1982.0241
catalog number
82.0241.01

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