TJ163.13-163.5 Power resources & Energy conservation
TJ170-179 Mechanics applied to machinery. Dynamics
TJ181-210 Mechanical movements
TJ210.2-211.47 Mechanical devices and figures. Automata. Ingenious mechanisms. Robots.
TJ212-225 Control engineering systems. Automatic machinery (General)
TJ227-240 Machine design and drawing
TJ241-254.7 Machine construction (General)
TJ255-267.5 Heat engines. Turbines. Turbomachines (General)
TJ268-740 Steam engineering. Locomotives.
TJ751-805 Miscellaneous motors and engines Including gas, gasoline, diesel engines
TJ807-830 Renewable energy sources
TJ836-927 Hydraulic machinery
TJ940-1030 Vacuum technology. Pneumatic machinery
TJ1040-1119 Machinery exclusive of prime movers
TJ1350-1475 Hoisting and conveying machinery. Lifting and pressing machinery
TJ1480-1496 Agricultural machinery. Farm machinery
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