Phineas Pratt’s Machine for Making Combs – Today in History: April 12
Ivoryton's Comstock, Cheney Co. produced a variety of ivory goods

Ivoryton's Comstock, Cheney Co. produced a variety of ivory goods for a growing 19th century middle-class market, such as nit-combs, piano veneers, letter openers and billiard balls - Courtesy of Essex Historical Society

On April 12, 1799, Phineas Pratt of Ivoryton, Connecticut, a deacon, silversmith, and inventor, received a patent for a “machine for making combs.” Combs in the late eighteenth century were usually made of cow or ox horn and cut by hand—a slow, labor-intensive process. Pratt’s mechanized invention led to its application to ivory and the development of the comb and ivory cutting industry along the Falls River in Deep River and Ivoryton, which was then known as West Centerbrook.

Connecticut Herald Advertisement

An ad placed in the Connecticut Herald, April 5, 1808, by Abel Pratt-the son of Phineas Pratt.

The “machine” (a circular saw) could be run by means of “the foot, wind, water or otherwise” and greatly reduced the time it took to cut the teeth, point, and polish a comb. An 1808 newspaper advertisement placed by Abel Pratt, Phineas’s son, in the Connecticut Herald proclaimed that with this patented machine “one man can cut the teeth of forty dozen combs in one day.” This type of economy of scale allowed for direct competition with British imports and a number of shops sprang up along the mouth of the Connecticut River in the Potapaug Quarter of the Saybrook Colony. Over time, as the process was refined and the industry grew and consolidated, the local workforce applied their ivory cutting skills to other products—including piano keys and billiard balls—at companies such as Comstock, Cheney and Pratt, Reed. At the height of production, 90 percent of the ivory imported into the United States was processed in Deep River and Ivoryton.

Learn More


“Essex Historical Society,” 2016. Link.


A List of Patents Granted by the United States, for the Encouragement of Arts and Sciences, Alphabetically Arranged from 1790 to 1828 ... Containing the Names of the Patentees, Their Places of Residence, and the Dates of Their Patents. With an Alphabetical List of the Names of Patentees: Also, the Mode of Applying for a Patent. and All the Acts Passed by Congress on the Subject of Patents. Washington, DC: Printed by S.A. Elliot, 1828. Link.
Malcarne, Don, and Robbi Storms. Around Essex: Elephants and River Gods. Charleston, SC: Arcadia, 2001.


American Mercury. “Advertisement: [Elisha & Ezra Pratt - Manufacture Ivory and Horn Combs].” January 2, 1797.
Connecticut Herald. “Advertisement: [Letters Patent for Certain Machines for Manufacturing Combs Placed by Abel Pratt].” April 5, 1808.

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