10 Internal combustion engine
 11 cranke case
 12 cranke trough
 13 crank shaft
 14 crank
 15 main connecting rod
 16 auxiliary connecting rod
 17 piston
 18 piston
 19 u-shaped cylinder
 20 cylinder leg
 21 cylinder leg
 22 cylinder cover
 23 common combustion chamber
 24 compressor
 25 jacket
 26 cooling chamber
 27 caseing
 28 circular form
 29 rotor drum
 30 cover
 31 cover
 32 anti friction bearing
 33 anti friction bearing
 34 stub shaft
 35 bevel gear
 36 bevel gear
 37 second compressor
 38 casing
 39 rotor
 40 jacket
 41 front plates
 42 anti friction bearing
 43 axis
 44 bevel gear
 45 bevel gear
 46 upper end
 47 outlet passage/bearing
 48 inlet passage
 49 ignition device
 50 
 51 pipe(s)
 52 inlet
 53 opening
 54 outlet connecting branches
 55 pipe(s)
 56 pair of continuous vanes
 57 pair of continuous vanes
 58 carry shoes
 59 recesses
 60 notch
 61 offset edge
 62 compressor
 63 compressor

The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s) The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}.