GB 4, 1905

Source: Subject-matter index, Abridgment of patent specifications for 1905–8, published 1910.

List of active classifications, i.e. excluding cross-references. References to external abridgment classes are listed separately below.

The first big category, "aerial machines", is new in a sense but it encompasses some categories which were formerly at the top level. Another consolidation occurred in the use of "launching and landing" as a top level category combining GB 4 starting, GB 4 landing, GB 4 anchoring, and GB 4 parachutes

Meanwhile GB 4 propel & steer, which was subdivided in the previous volume, is here split into separate top-level categories.

GB 4 aëroplanes is also split at the top level, into one category for arrangement and one further subdivided category for construction.

Patents are only classified at the lowest level of classification (entries with periods, not dashes). In other words there's nothing under "launching and landing" in general, only individual lists for the subcategories (anchoring, parachutes, platforms, etc.). There are about 47 of these leaf categories in the lists below.

Active headings in subject-matter index for 1905–8

• aerial machines and apparatus, kinds or types of—
  • adapted to travel also on land or water [including arrangements of land wheels for starting flight].
  • coupled in pairs or trains.
  • kites.
  • military apparatus [including apparatus for discharging bodies from a height]. (= GB 4 military)
  • railways, aerial, and the like. (= GB 4 aërial railways)
  • with aerostats or buoyant bodies. (= GB 4 with buoyant)
  • without aerostats or buoyant bodies. (= GB 4 without buoyant)
• aeroplanes and the like, fixed, arrangement, and disposition of, [including all arrangements of supporting aeroplanes other than rotary and vibratory]. (cf. GB 4 aëroplanes))
• aeroplanes, sails, wings, rudders, and the like, construction of—
  • fixed.
  • rotary, vibratory, and adjustable.
  • with valve, louvers, and the like.
• aerostats or buoyant bodies— (= GB 4 aërostats)
  • captive and trailing-cable balloons.
  • construction, [including net coverings and the like]—
    • gas receptacles shaped as complete symmetrical surfaces of revolution—
      • around an horizontal axis.
      • around a vertical axis.
    • gas receptacles shaped otherwise than as complete symmetrical surfaces of revolution.
    • traversed by open-ended air conduits.
  • fitted directly with or combined with propelling, steering, and balancing arrangements.
  • hot or rarefied air and vapour, using.
  • inflating, deflating, and varying buoyancy, methods of.
  • materials, [including metallic envelopes].
  • multiple, partitioned, and cellular.
  • valves and valve-operating means.
• cars and cabins. (= GB 4 cars and cabins)
• course indicators. (one entry: Patent GB-1908-28558)
• framework. (=GB 4 framework)
• launching and landing—
  • anchoring, [other than railways, aerial, and the like]. (= GB 4 anchoring)
  • parachutes. (= GB 4 parachutes)
  • platforms, harbours, stages, and launching-ways.
  • shock of landing, deadening, [including aerostat collision-buffer fittings]. ( = GB 4 landing)
  • starting. (= GB 4 starting)
  • stopping way.
• propelling (cf. GB 4 propel & steer)
  • by electric and magnetic means
  • direct fluid-pressure apparatus, [including fluid-jet reaction].
  • driving-gear for screw and other rotary propellers— (cf. GB 4 propeller driving gear of 1901)
    • hand and foot.
    • power.
    • rotary propellers [other than screw and like propellers].
    • screw and like propellers, arrangement of. (cf. GB 4 screw propeller arrangement) of 1901
    • (screw and like propellers, construction of. ; formerly GB 4 screw propeller construction in 1901, here cross-references Abridgment Class Ships &c., Div. II)
    • vibratory, recriprocatory, and undulatory propellers, [including driving-gear]—
      • hand and foot driven.
      • power driven.
• steering, balancing, and regulating altitude—
  • automatically.
  • by electric and magnetic means.
  • by gyroscopic apparatus.
  • by non-automatic adjustment of—
    • aeroplanes, sails, wings, rudders, and the like.
    • aerostats, supplementary, position of.
    • ballast supply and discharge.
    • centre of gravity.
    • propellers, line or plane of action of.
    • propellers, speed, reactive torque, amplitude of motion, or sense of action of.

Cross-references to other Abridgment Classes

• Philosophical Instruments
• Air and gas engines
• Rotary engines & c.
• Electricity, Conducting &c.
• Life-saving &c.
• Ships &c., Div. II
• Ropes &c.
• Lamps &c.
• Buildings &c.
• Signalling &c.
• Toys &c.
• Weighing-apparatus