Franklin Weston Mann (July 24, 1856 – November 14, 1916) was an American

physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...

and

inventor An invention is a unique or novel device, method, composition, idea or process. An invention may be an improvement upon a machine, product, or process for increasing efficiency or lowering cost. It may also be an entirely new concept. If an ...

remembered as author of the pioneering

ballistics Ballistics is the field of mechanics concerned with the launching, flight behaviour and impact effects of projectiles, especially ranged weapon munitions such as bullets, unguided bombs, rockets or the like; the science or art of designing and a ...

text entitled ''The Bullet's Flight from Powder to Target: The Internal and External Ballistics of Small Arms; a Study of Rifle Shooting with the Personal Element Excluded, Disclosing the Cause of the Error at Target''.Sipe, Warren "Dr. Mann: Father of Ballistic Science" in ''Guns'' November 1960 pp. 28–30,58&60

Early life

Mann was youngest of six children born in Norfolk, Massachusetts to Levi and Lydia (Ware) Mann. He grew up on a

New England New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces ...

farm and started shooting at the age of twelve. He was intrigued by causes of dispersion of bullets fired at a single point of aim. He graduated from

Cornell University Cornell University is a private statutory land-grant research university based in Ithaca, New York. It is a member of the Ivy League. Founded in 1865 by Ezra Cornell and Andrew Dickson White, Cornell was founded with the intention to teach an ...

with a

Bachelor of Science A Bachelor of Science (BS, BSc, SB, or ScB; from the Latin ') is a bachelor's degree awarded for programs that generally last three to five years. The first university to admit a student to the degree of Bachelor of Science was the University of ...

degree in 1878 and from

Boston University School of Medicine The Boston University Chobanian & Avedisian School of Medicine, formerly the Boston University School of Medicine, is one of the graduate schools of Boston University. Founded in 1848, the medical school was the first institution in the world ...

as a

Doctor of Medicine Doctor of Medicine (abbreviated M.D., from the Latin language, Latin ''Medicinae Doctor'') is a medical degree, the meaning of which varies between different jurisdictions. In the United States, and some other countries, the M.D. denotes a profes ...

. He worked four years as a general practitioner including

obstetrics Obstetrics is the field of study concentrated on pregnancy, childbirth and the postpartum period. As a medical specialty, obstetrics is combined with gynecology under the discipline known as obstetrics and gynecology (OB/GYN), which is a surgi ...

while running a shop where he sharpened knives and lawnmowers and invented in 1889 a machine for chopping slaughterhouse bones into bone meal for chicken feed. He manufactured and sold the Mann Bone Cutter from a factory in

Milford, Massachusetts Milford is a town in Worcester County, Massachusetts, United States. The population was 30,379 according to the 2020 census. First settled in 1662 and incorporated in 1780, Milford became a booming industrial and quarrying community in the 19th c ...

. Revenue from sale of his bone cutters enabled him to retire from practicing medicine at the age of 37 and devote his time to investigation of rifle ballistics.

Experimentation

Mann worked with members of the Massachusetts Rifle Association including

gunsmith A gunsmith is a person who repairs, modifies, designs, or builds guns. The occupation differs from an armorer, who usually replaces only worn parts in standard firearms. Gunsmiths do modifications and changes to a firearm that may require a very h ...

Adolph Otto Niedner Adolph Otto Niedner (October 1, 1863 – December 27, 1954) was an American gunsmith remembered for pioneering work with cartridges including the .22 Long Rifle and .25-06 Remington. Early life Niedner was born in Philadelphia to Germans, German ...

and

gun barrel A gun barrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns. It is the straight shooting tube, usually made of rigid high-strength metal, through which a contained rapid expansion of high-pressure ...

-maker Harry Pope. By 1894 he was conducting experiments with the aid of precision crafted guns and ammunition on specially designed equipment to minimize and measure sources of error. On his family farm, he constructed a massive concrete foundation to anchor machines holding rifle barrels as motionless as possible. In front of the foundation, he built a range where bullets could be fired through a cloth tunnel to prevent wind disturbance. Stations within the tunnel held sheets of paper to measure bullet orientation and deflection at intervals.

Legacy

Results of his investigations published in 1909 are commonly known as ''The Bullet's Flight''. The precision-machined vee-shaped cast-iron steadying cradle he invented for his investigations was adopted in 1920 by the

National Institute of Standards and Technology The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness. NIST's activities are organized into physical sci ...

and Aberdeen Proving Ground,''

Popular Science ''Popular Science'' (also known as ''PopSci'') is an American digital magazine carrying popular science content, which refers to articles for the general reader on science and technology subjects. ''Popular Science'' has won over 58 awards, incl ...

'', November 1921, p. 33 and has been widely replicated for ballistics investigation as a "Mann Rest". His 1909 publication had secretly been studied by European combatants building long-range artillery of

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

. Mann died at home in 1916 without being aware of the international governmental recognition of his work.

Early life

Experimentation

Legacy

References

Further reading