Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent
1979-04-02
1980-11-11
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Floor-working
15 93R, E04D 1500
Patent
active
042329060
ABSTRACT:
A machine for stripping shingles from a surface, the machine comprising a frame having a handle portion and first and second leg portions, an axle mounted on the leg portions and extending therebetween, first and second wheels mounted on the axle, a motor mounted on the frame, a drive mechanism interconnecting the motor and the axle, and cutter assemblies fixed to the axle, each of the cutter assemblies comprising a base portion fixed to the axle, a coil spring portion connected to the base portion and extending outwardly therefrom, and a cutter portion connected to the spring portion and extending outwardly therefrom.
REFERENCES:
patent: 1415949 (1922-05-01), Perelman
patent: 1830565 (1931-11-01), Schaeffers
patent: 2749103 (1956-06-01), Clemenzi
patent: 2801432 (1957-08-01), Randrup
patent: 3223451 (1965-12-01), Orr
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