To spray glass beads in conformation to plural kinds of road mark lines by mounting a pair of regulating contact plates on slit holes bored in an inward protruding circular fixed contact plate in such a manner as to be movable through bolts.
A glass bead spraying mechanism 7a is formed of a fixed contact plate 22 having a pair of slit holes 22a and a circularly formed end surface, and a pair of regulating contact plates 25 mounted on the fixed contact plate 22 so as to be movable in opposite to each other through the slit holes 22a, bolts 23 and unit 24. When glass beads are sprayed in a small width, the end parts 25b of the regulating contact plates 25 are moved so as to be mutually approached, and then fixed to the fixed contact plate 22. When the glass beads are sprayed in a large width, the end parts 25b of the regulating contact plates 25 are moved so as to be mutually situated on the outermost side, and fixed along the round part 22b of the fixed contact plate 22. The position of the regulating contact plates 25 to the fixed contact plate 22 in changed through the slit hole 22a and the bolt 23, whereby the glass beads 14 can be uniformly sprayed according to both narrow and broad road mark lines.
ISHIZUKA YASUO
HORI YOKICHI
HASHIZUME MITSUAKI
Next Patent: WIND-RESISTING DAMPING METHOD OF BRIDGE BEAM