GB 4
GB 4 refers to Class 4, Aeronautics, of the scheme apparently developed for the publication of Abridgment of patent specifications. Before 1884 then "Class 4" contained patents relating to Preservation of Food, but helpfully, it seems that the Patent Office in issued retrospective Abridgments including Class 4, Aeronautics.
The Abridgments for each series of years contain an index, listing the numbers of each patent by year for each keyword. We are abbreviating these slightly and treating them as the British system for tech classifications of patents:
Name | Wiki | Year added |
---|---|---|
aërial machines with aërostats or buoyant bodies | GB 4 with buoyant | 1884 |
aërial machines without aërostats or buoyant bodies | GB 4 without buoyant | 1884 |
aëroplanes and the like | GB 4 aëroplanes | 1884 |
aërostats or buoyant bodies | GB 4 aërostats | 1884 |
anchoring | GB 4 anchoring | 1897 |
cars and cabins | GB 4 cars and cabins | 1884 |
framework | GB 4 framework | 1884 |
life-saving, marine, apparatus used for | GB 4 life-saving | 1889 |
military machines[1] | GB 4 military | 1884 |
motors | GB 4 motors | 1884 |
parachutes | GB 4 parachutes | 1884 |
propelling & steering arrangements | GB 4 propel & steer | 1884 |
propelling ships and boats, machines[1] used for | GB 4 propel boats | 1884 |
propelling vehicles, apparatus used for | GB 4 propel vehicles | 1889 |
railways, aërial | GB 4 aërial railways | 1884 |
resistance at various speeds, determining | GB 4 resistance | 1901 |
search-light apparatus | GB 4 searchlight | 1889 |
shock of landing, deadening | GB 4 landing | 1889 |
starting | GB 4 starting | 1884 |
In 1901, "propelling & steering arrangements is subdivided as follows:
driving-gear for screw and other rotary propellers | GB 4 propeller driving gear |
means for propelling and steering (other than screw and like propellers) | GB 4 propeller means |
screw and like propellers, arrangement of | GB 4 screw propeller arrangement |
screw and like propellers, construction of | GB 4 screw propeller construction |
The Abridgments for 1905–1908 and 1909–1915 add a number of additional classifications and subclassifications.These are presented in outline at GB 4, 1905 and GB 4, 1909. (The volumes covering these periods were published in 1910 and 1921, respectively.)
Notes:
- 1884 taken as starting point. Haven't yet confirmed whether this class existed in 1877–1883
- In the volume for dates 1815–1866, aeronautics may have been numbered 41; but the organization of the system at this point requires further study.[2]
- "Year added" is the first year of patents classified with the new term; these classifications were not necessarily published or assigned, until a few years later.
- "kites" – see aëroplanes & c. above
- Indexes have other cross-references, internally and to other classes. Toys are in a different abridgment class.
- Patents can be classified under many headings; e.g. Patent GB-1893-1064. Not even "with buoyant" and "without buoyant" are mutually exclusive, though they don't usually overlap: Patent GB-1884-2589 and Patent GB-1897-7012 are listed under both.
References
- ↑ 1.0 1.1 1889: "machine" changed to "apparatus"
- ↑ Abridgments of Specifications relating to Aeronautics, A.D. 1815–1866 on HathiTrust.
Enclosing categories | British patent classifications |
---|---|
Subcategories | GB 4 with buoyant, GB 4 without buoyant, GB 4 aëroplanes, GB 4 aërostats, GB 4, 1905, GB 4, 1909 |
Keywords | |
Start year | |
End year |