Patent GB-1891-19228

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Hiram Maxim, the famous inventor, in 1897 patented a device with components similar to those in the Sperry stabilizer of 1913. Maxim described a single gyro, a servomotor, and a follow-up system (English patent 19,228). Herbert Thompson, who later examined the patent, decided the device could not work because Maxim "did not know how to build gyros." (H. H. Thompson to EAS, London office, March 24, 1916; SP.)[1]

[Big discrepancy in year, but surely Maxim didn't English patent 19,228 in two different years?]

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Year filed 1891
Year granted
Office GB
Patent number 19228
Inventors Hiram Stevens Maxim
Inventor country US, GB
Applicant person
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Flying machine
English title Flying machine
Tech fields servomotors
Filing date 1891/11/06
Full specification filed date
Application number
Grant date
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories GB 122 aero steam engines, GB 123 aero steam generators, GB 4 without buoyant
IPCs
CPCs
Family year 1891
First filing? No
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims