SCHEDULE.
GROUP A.
METAL WORKING MACHINERY.
The following, including spare parts and components therefor—
1. Vertical boring and turning mills, automatic cycle types.
2. Jig boring machines of all types.
3. Grinding machines of all types.
(reg. 21
4. Deep hole drilling machines in which the coolant passes through the drill.
and hollow drills for such machines.
5. Right angle (7) lathes (in which the bed is at right angles to the spinkki
6 Spinning lathes.
7. Spar millers.
3. Planing machines, planer milling machines, and combination planer an
planer milling machines with capacity for work pieces 72 inches (1.80 mj wide and over, or 20 feet (6,0 m) long and over.
9. Forging hammers, as follows:
(0) Having a falling weight exceeding 10 tons.
(5) Steam, air or mechanical hammers except counter-blow hammer of
rated sizca exceeding 10 tons,
(e) Counter-blow hammers of rated sizes of 25,000 kilogram/meter of
English equivalent or more.
(d) Horizontal impact hanımers, hydraulically actuated of 10,000 foot pound
or More.
10. Presses, mechanical or hydraulic, with rated pressure of over 1,000 tona.
11. Machines and equipment specially designed for making or measuring ps
turbine blades, including but not limited to the following:
(a) Blade belt grinding machines;
(5) Blade edge radiusing machines:
(c) Blade polishing machinee;
(d) Blade aerofoil milling and/or grinding machines:
(e) Blade fillet radiusing and/or platform forming machines or equipment.
U) Blade root milling machines;
(g) Blade blank pre-forming machines;
(A) Blade rolling machines;
(4) Blade aerofoil shaping machines:
( Blade root grinding machines;
(*) Blade aerofoil scribing equipment;
(D) Blade aerofoil and/or root automatic measuring equipment.
12. Machinery for use in the manufacture of aircraft, as follows:
() Machinery specially designed for the working or forming of aircraft
abeet, plate or extrusion:
(8) Machinery specially designed for the milling of aircraft skin.
13. Machines specially designed for the manufacture of jet engines, the
following:
(a) let engine compressor case boring machines:
(5) Jet engine compressor and turbine disc turning machines:
(e) Jet engine rotor grinders,
if Jet engine blade and disc external surface broaching tools.
N. Gear making machinery, all machinery designed for the manufacture and/or
fishing of machine cut gears.
15. Profiling and duplicating machinery, as follows:
(6) Die sinking machines;
(8) Profiling and duplicating machines (planing, shaping milling or grinding). 16. Met rolling mills all types.
17. Electronic closed loop feed back controls for machine tools (culling and forming) in which a continuous feed back of information from the work piete or tool or work piece carrier or tool holder itself results in con- inuous correction of the control commands; and machine tools incorporating such controls.
GROUP B.
CHEMICAL AND METALLURGICAL PLANT. FURNACES, PUMPS, VALVES, ETC.
The following. including spare parts and components therefvr-
1. Equipment specially designed for the conversion of nitrogen tetroxide ta nitric acid of 98 per cent or bigher concentration, or for the concentration of nitrogen tetroxide and/or nitric oxides or mixtures thereof,
1 Centrifugal counter current solvent extractors.
1. Gas liquifying equipment,
4. Equipment for production and/or concentration of deuterium oxide,
5 Equipment for the production of military explosives, as follows:
(a) Complete installations.
(b) Dehydration presses.
(c) Extrusion presses for the extrusion of small arms, cannon and rocket
propellants.
(d) Cutting machines for the sizing of extraded propellants.
(e) Sweetic barrels (tumblers) 6 feet and over in diameter and having over
500 pounds product capacity.
in Nitrators: continuous types.
6. Plants for the production of titanium and zirconium metal and parts pecially designed therefor, and electric furnaces specially designed for the recovery of titanium and zirconium from scrap.
1. Pumps (except vacuum pumps) and pipes, valves, and cocks including Pressure regulators therefor, delivering Gquids, separately or in combination with solids and/or gases and baving any of the following characteristics: (c) Designed to move malten metals by electromagnetic forcen:
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