Peat And Lignite Their Manufacture And Use in Europe
Peat And Lignite Their Manufacture And Use in Europe
Canada Mines Branch
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The Dolberg machine is probably the one which is mostly used in Ger- many. The principal parts of this machine are two parallel shafts rotating against each other, and provided with screw threads, see Fig. 63, made up of Digitized by Google 65 Fig. 58 — Schlickey sen's Peat Excavator. intei changeable quadrants. The thread on one shaft passes between that on the other shaft, whereby the peat material is mixed and kneaded, during its movement towards the mouthpiece of the machine. Roots and fibr...es are not cut or pulped in a machine of this construction and in cases where the peat contains such material, stoppages are frequent and the work interrupted during the cleaning of the machine. These roots and fibres twist themselves around the shafts and prevent the movement of the material towards the mouthpiece. In bogs containing well humified peat free from roots and fibres the Dolberg machine works satisfactorily. Machines exactly similar to the Dolberg machine or with very slight alterations are also manufactured by the following firms: — A.
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