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Model marked  " ROBERTS  patend .  NO. 1193925. It had gone up on the John DEER machine in USA.
  It is an improvement of the simple funnel huilor  by the dust protection of the  funnel .
However the system doesn't permit a debit regulating .
 oiler robert dessus ouvert

oiler robert

oiler cup text
The lid, the spring and the pin are in steel.