Early machines were a small trolley on which barrels of tar were placed and the tar ran into a speader box via a heated tank. Later machine were attachments fitted to a steam roller that warmed the tar using steam and had a 'spearder' bar with small nozels to spray the tar onto the road surface. Chipping and sine ston being spread on top by hand , and latter by a 'grit spreader' hopper towed behind. the surface was then rolled by a hand roller or Steam roller.
Attributes | Values |
---|---|
rdfs:label |
|
rdfs:comment |
|
dcterms:subject | |
dbkwik:tractors/pr...iPageUsesTemplate | |
abstract |
|