:Sylvester H. Roper

File:Sylvester Roper steam carriage of 1870.jpg

Sylvester H. Roper's father, Merrick, was a cabinetmaker, born 1792 in Sterling, Massachusetts.{{Citation |pages=317, 903–904 |title= History of Francestown, N.H. : from its earliest settlement April, 1758, to January 1, 1891 : with a brief genealogical record of all the Francestown families |last= Cochrane |first= W. R. |location=Francestown, N.H. |year= 1895 }} Merrick came to Francestown, New Hampshire in 1807 and married Sylvester's mother Susan Fairbanks in 1817. Sylvester had an older brother who was a housepainter, two younger sisters, and a younger brother who became a machinist at the Singer Sewing Machine Manufactory in Boston, then later a jeweler.

Sylvester Roper was born on November 24, 1823.{{Citation |title= Died; Roper – At Cambridge. 1st inst., Sylvester H. Roper, 72 yrs, 6 monts, 8 dys. |newspaper= Boston Daily Advertiser |location= Boston, Massachusetts |date= 3 June 1896 |page= 8 |number= 132 }} From an early age he displayed mechanical talent. At age 12 he made a stationary steam engine, even though he had never seen one before in person; this invention was kept on display in the laboratory of the Francestown Academy. At age 14, he built a locomotive engine, and only afterward saw such an engine for the first time in Nashua. Roper left Francestown at a young age and worked as a machinist, first in Nashua, then in Manchester, New York,The history is unclear if this refers to Manchester (town), New York, Manchester (village), New York, or Manchester, New Hampshire, and New York state and Worcester. He married Almira D. Hill on April 20, 1845, in Providence, Rhode Island.{{Citation |title= Married; At Providence, 20th inst. Mr. Sylvester H Roper and Miss Almira D. Hill, both of Boston. |newspaper= Emancipator and Weekly Chronicle |date= 30 April 1845 |location=Boston, Massachusetts |page= 4 |issue=1 }} In 1854 he moved to Boston, Massachusetts living in the Roxbury neighborhood at 299 Eustis Street.

File:The Greatest Mechanical Exhibition in the World. Roper steam handbill.png

About the same time he came to Boston, Roper invented his Handstitch Sewing Machine. In 1861 he invented a hot air engine and filed several patents for a hot air engines.{{cite web|url=http://hotairengines.org/patents/roper-patents|title=Roper's Hot Air Engine patents|work=hotairengines.org}} He eventually succeeded in building engines ranging from 1 to 4 HP. In 1869 over 200 roper's air engines were in operation. Roper worked for the Springfield Armory during the Civil War.{{Citation |last= Girdler |first= Allan |title=First Fired, First Forgotten |magazine=Cycle World |publisher=Hachette Filipacchi Media U.S. |issn=0011-4286 |location=Newport Beach, California |date= February 1998 |volume= 37 |issue= 2 |pages= 62–70 |postscript= Michaux-Perreaux year 1868. Roper year 1868}} Roper's work eventually came to the attention of other inventors and engineers of the area, including Elias Howe, Alvan Clark, Christopher Miner Spencer. Roper was observed driving his steam carriage around Boston in 1863. One such 1863 carriage went to the Henry Ford Museum.

Roper invented the first shotgun choke, short tubes that could be threaded onto, or removed from, the outside of the shotgun barrel to vary the shot spread to suit different targets and ranges. Roper and Christopher Miner Spencer were granted a joint patent for a repeating shotgun mechanism on April 4, 1882. Later, on April 21, 1885, Roper alone obtained a patent for an improved shotgun loading mechanism. Roper and his son, Charles, designed a factory producing screw making equipment, which Charles Roper continued to manage after his father's death.

On June 1, 1896, Roper rode one of his later velocipede models, a Pope Manufacturing Company Columbia bicycle with a steam engine added, to the Charles River bicycle track, near Harvard Bridge, Cambridge, Massachusetts, where he made several laps, pacing bicyclists there, including professional rider Tom ButlerThe same Tom Butler was overtaken 10 feet from the finish by Major Taylor in the 1899 world {{Convert|1|mi}} track cycling championship. See {{Citation |url= https://books.google.com/books?id=cLFhNYLJD-sC&pg=PA334 |access-date=2011-02-09 |title= African-American sports greats: a biographical dictionary |first= David L. |last= Porter |publisher= ABC-CLIO |year=1995 |isbn=0-313-28987-5 |page= 334 }} who could not keep up with the steam powered machine. Roper was clocked at 2 minutes 1.4 seconds for the flying mile, for a top speed {{Convert|40|mph|abbr=on}} He was seen to be unstable and then fall on the track, suffering a head wound, and was found dead. After autopsy, the cause of death was found to be heart failure, although it is unknown if the crash was the cause of the stress on his heart, or if his heart failed prior to the crash.

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• {{Citation |url= http://thevintagent.blogspot.com/2011/04/roper-steam-velocipedes.html |title= Roper Steam Velocipedes |work= The Vintagent |last=d'Orléans |first= Paul |date= 21 April 2011 |access-date= 2011-11-15 }}
• {{Citation |title= Las Vegas Premier Motorcycle Auction; 1894 Roper Steam Motorcycle |url= http://www.auctionsamerica.com/events/feature-lots.cfm?SaleCode=LV12&ID=r154 |access-date= 2011-11-14 |publisher= Auctions America by RM Auctions |year= 2011 |url-status= dead |archive-url= https://web.archive.org/web/20111104065310/http://www.auctionsamerica.com/events/feature-lots.cfm?SaleCode=LV12&ID=r154 |archive-date= 2011-11-04 }}
• {{YouTube|id=PT38vmVhwSk|title=Pete Gagan – 1896 Sylvester Roper Steam Motorcycle }} Demonstration of working replica of 1894 Roper velocipede by Pete Gagan of the Antique Motorcycle Club of America.
• {{Citation |url= http://www.nramuseum.com/the-museum/the-galleries/the-new-prosperity/case-44-the-mother-of-invention-cartridge-technology/roper-repeating-shotgun.aspx |access-date= 2011-11-15 |title= Roper Repeating Shotgun |work= National Firearms Museum |publisher=National Rifle Association of America }}

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Category:1823 births

Category:1896 deaths

Category:People from Francestown, New Hampshire

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