K: exhaust-valve (controlled by an eccentric through a wayshaft and levers)
L: non return valve
M: mixing-valve (mixing fuel and air)
N: suction-valve (acts as a govenor, limiting the fuel-air mixutre by the suction of the pistion)
0: light spring
P: strong spring
Q: small slide (used for the ignition timming)
Y: small ignition tube (kept red-hot by means an external flame)
Public domainPublic domainfalsefalse
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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}}.