Counter, Stillman Counting Machine, U.S. Patent Office Model

Description:

During the second half of the 19th century, steam engines played a growing role in American life. This U.S. Patent Office model is for a counter used to count the number of revolutions of a steam engine. Paul Stillman (about 1811-1856) was one of three brothers who ran the New York City machine shop Novelty Iron Works. He took a particular interest in steam gauges,manometers, steam indicators, and pyrometers.

In 1848 Stillman took out a patent for a device to measure the pressure of steam and the extent of the vacuum in steam boilers and engines. This invention won him recognition from the Franklin Institute of Philadelphia. The measuring device on this instrument was analog, not digital. In 1854 he patented this digital improvement in counting machines. The following year, he patented a water gauge for steam boilers. Stillman’s son, Francis H. Stillman, also became a distinguished mechanical engineer.

The patent model has a wooden base and sides, with a metal plate across the top with four windows in it. Underneath each window is a cogged metal wheel, with the digits from 0 to 9 around the rim. To the right, on the same shaft as the wheels, is a brass crank that fits through a fifth hole in the plate. Moving the crank forward advances the rightmost wheel by one and, if necessary, activates the carry mechanism.

A mark on a paper tag nailed to the frame reads: Paul Stillman (/) Appa’ for Registering Numbers (/) Dec 15th 1852. A mark on the back of the base reads: 11577 (/) L 1201-1208.

The Novelty Iron Works made and sold Stillman’s register before and after his death. An 1864 price list, included at the back of a new edition of his The Steam Engine Indicator, and the Improved Manometer Steam and Vacuum Gauges; Their Utility and Application, indicates that the registers then sold with dials in 8”, 10” and 13” sizes, and had prices of $65.00 to $75.00 apiece.

References:

P. Stillman, “Improvement in Counting-Machines,” U.S. Patent 11,577, August 22, 1854.

P. Stillman, The Steam Engine Indicator, and the Improved Manometer Steam and Vacuum Gauges; Their Utility and Application, New York: Van Nostrand, 1864, pp. 82-84, 94-95. Editions of this book appeared at least as early as 1851.

"Deceased Inventors," Scientific American, 20 #2 (Sept 20 1856), p. 11.

“Francis H. Stillman: A Biographical Sketch,” Cassier’s Magazine, 33, #6 (April 1908), p. 684.

Date Made: 1854

Patentee: Stillman, PaulMaker: Stillman, Paul

Location: Currently not on view

Place Made: United States: New York, New York CityPlace Patented: United States: New York, New York City

Subject: Steam EnginesMathematics

Subject:

See more items in: Medicine and Science: Mathematics, Counters, Science & Mathematics

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: MA.309327Accession Number: 89797Catalog Number: 309327

Object Name: counterObject Type: Patent Model

Physical Description: brass (overall material)steel (overall material)paper (overall material)wood (overall material)Measurements: overall: 3 cm x 12.5 cm x 8.5 cm; 1 3/16 in x 4 15/16 in x 3 3/8 in

Guid: http://n2t.net/ark:/65665/ng49ca746a5-0ce1-704b-e053-15f76fa0b4fa

Record Id: nmah_690850

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.