Frederick James Hargreaves

Frederick James Hargreaves was an aero inventor addressed at 17 Upton Avenue, Forest Gate, London, E.

On another patent he gave the address Engineer, of Park Cottage, Blake Hall Road, Wanstead, Essex, and described himself as an Engineer.

He patented with, or assigned to, or licensed to, the Blackburn Aeroplane and Motor Co. He didn't live near the firm's Leeds location, however.

Shall we assume he's the British astronomer in en.wp? (w:Frederick James Hargreaves) On the guess that he is, we've put that wikidata id below.

Ah! That FJ Hargreaves was a PATENT AGENT, according to [1] He may have been an agent here, not an inventor

For now we keep the 1893 Hargreaves patent in this list, but this FJ Hargreaves was too young to be the actual inventor in that case.

Patents whose inventor or applicant is Frederick James Hargreaves or F. J. Hargreaves or Hargreaves

• Patent FR-1893-226957 (English title: Improvements to safety belts)
• Patent GB-1909-8432 (English title: Apparatus for Automatically Balancing Aerial Machines and the like, Filing date: 1909-04-07)
• Patent FR-1910-415524 (English title: Improved balance apparatus for aerial and other machines, Filing date: 1910-05-04)
• Patent GB-1916-125473 (English title: Improvements in or relating to Controlling Mechanism for Aerial Machines, Filing date: 1916-08-21)

Publications by or about Frederick James Hargreaves or F. J. Hargreaves or Hargreaves

• Hargreaves, 1910, The (National) Physical Laboratory Experiments (Simple title: The (National) Physical Laboratory Experiments, Journal: Aero)
• Hargreaves, 1910, An automatic balancer for aeroplanes (Simple title: An automatic balancer for aeroplanes, Journal: Aeronautics (UK))

References

Names	Frederick James Hargreaves; F. J. Hargreaves; Hargreaves
Birth date	1891
Death date	1970
Countries	GB
Locations	London, Essex
Occupations	Engineer, patent agent, astronomer
Tech areas
Affiliations	Blackburn Aeroplane and Motor Co.
Wikidata id	Q5498139