Self-feeding wood burning heating unit
Solid fuel heating appliance
Starved air inclined hearth combustor
Step grate
Step grate for mechanical stoker with flexible fire grate
Step type stoker with oscillation mechanism
Stepped grate for an incinerator plant
Stoker and grate therefore
Stoker backstop
Stoker construction
Stoker grates for circulating combustible material
Stoker type firing equipment for use with city refuse incinerato
Stoker with universal key construction
Stoking plant for fuel in whole bales
System utilizing a vibratory combustion bed to incinerate waste