Patent GB-1912-17933

Helicopter with pyramid-shaped frame. Stable and steerable, says the application. Lifting propellers are above and below. Steering propellers are on the side.

Tech categories in google patents record of this patent:

• CPC B64C39/00 Aircraft not otherwise provided for
  • CPC B64C39/02 Aircraft not otherwise provided for characterised by special use
    • CPC B64C39/024 Aircraft not otherwise provided for characterised by special use of the remote controlled vehicle type, i.e. RPV
• CPC B64C2201/024 Helicopters, or autogiros
• CPC B64C2201/108 Unmanned aerial vehicles; Equipment therefor characterised by the lift producing means using rotors, or propellers

• Inventor location: 19 Dornton Road, Balham, London
• Inventor occupation: Black and White Artist (meaning unclear)

Sources

• Original patent doc on espacenet
• espacenet 191217933
• This patent on google patents
• Inventor location:

Year filed	1912
Year granted	1913
Office	GB
Patent number	17933
Inventors	Travers Glynn Ivon Ayers
Inventor country	GB
Applicant person	Travers Glynn Ivon Ayers
Applicant firm
Applicant type	INDIV
Applicant is inventor?	Yes
Original title	Improvements in and relating to Aerial Machines
English title	Pyramidal helicopter
Tech fields	helicopter
Filing date	August 2, 1912
Full specification filed date	February 3, 1913
Application number	191217933D
Grant date	July 24, 1913
Granted?	Yes
Publication date
Supplementary to patent
Related to aircraft?	Yes
Serial number
Patent agent	Browne & Co.
Assigned to
National tech categories
IPCs	IPC B64C27/04
CPCs	CPC B64C39/024, CPC B64C2201/108, CPC B64C2201/024, CPC B64C2700/6281
Family year	1912
First filing?	Yes
Cites these patents
Citations from after 1930
Application ID	23637472
INPADOC family ID	11125203
Number of text pages	5
Number of diagram pages	1
Number of figures	11
Number of claims	5