US 4,792,190 AGranted

Machine for cutting curbstones, sidewalks or the like

OwnerRen/e/ Bertrandinventor

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Abstract

There is disclosed a machine including a powered truck-like vehicle having a support base and an apparatus mounted on the base for cutting a drive-in passage across a curbstone, a sidewalk or the like. The apparatus comprises two spaced parallel booms mounted at one end on the base and rail-structure-holding heads connected to the booms and displaceable along them. A rail structure including an elongated upper suspension member, having a non-circular cross section, is mounted on the heads by extension of the suspension member through rotary pillow blocks of the heads of which the cylinders have like non-circular bores. A linkage powered mechanism, interconnecting the heads and the suspension member, allows oscillation of the latter about its longitudinal axis and consequently oscillation of the rail structure of which it is a part. A power jack allows shifting of the rail structure laterally with respect to the booms. A saw carrier, holding the saw, is mounted on the rail structure so that it can move along it and also be oscillated with it. Additionally, the saw is movable on the carrier in a direction transverse to the rail structure and, also, the carrier and saw are movable bodily in the same direction.

Claims28

Dependent claims

A machine including a powered truck-like vehicle having a support base and an apparatus mounted on the base for cutting a drive-in passage across a curbstone, a sidewalk or the like, said apparatus comprising:

two spaced parallel booms mounted at one end on said base;
a pair of rail-structure-holding heads slidably mounted each on one of said booms, and means for displacing said heads along said booms;
an elongated main rail structure extending between said heads, said main rail structure including an elongated upper suspension member having a non-circular cross section and a longitudinal axis;
means mounting said main rail structure on said heads for oscillation of said rail structure about said longitudinal axis, said main rail structure mounting means comprising:
pillow blocks each having a rotary cylinder, said pillow blocks being each mounted on one of said heads;
said cylinders being formed with bores therethrough of non-circular cross section;
wherein said rail structure suspension member slidably extends through said non-circular bore for rotation with said cylinders;
operative means interconnecting at least one of said heads and the respective pillow-block cylinder for oscillating said suspension member, and thus said rail structure, about said longitudinal axis;
a saw carrier and means, solid with said saw carrier, for mounting said saw carrier on said oscillatable rail structure and for displacing said saw carrier thereon along a first direction parallel to said longitudinal axis;
and
a saw mounted on said carrier, and wherein said carrier includes first means for displacing said saw on said carrier in a second direction perpendicular to said first direction.

8 more elements

two spaced parallel booms mounted, at one end, on said base;
a pair of rail-structure-holding heads slidably mounted each on one of said booms and means for displacing said heads along said booms;
an elongated main rail structure extending between said heads and means mounting said main rail structure on said heads, said rail structure including an elongated upper suspension member having a longitudinal axis;
a saw carrier, and means, solid with said saw carrier, for mounting said saw carrier on said main rail structure and for displacing said saw carrier thereon in a first direction parallel to said suspension member longitudinal axis;
a saw mounted on said carrier and wherein said carrier includes first means for displacing said saw on said carrier in a second direction perpendicular to said first direction;
a power jack and means mounting the end of said jack respectively to one of said heads and to said rail structure suspension member for shifting said rail structure along said first direction, laterally with respect to said booms;
second means for displacing said saw carrier and saw bodily in said second direction;
said suspension member having a non-circular cross section and said means mounting said main rail structure on said heads comprise:
pillow blocks, each having a rotary cylinder, said pillow blocks being each mounted on one of said heads, said cylinders being formed with bores therethrough of non-circular cross section;
wherein said rail structure suspension member slidably extends through said non-circular bores for rotation with said cylinders;
operative means interconnecting at least one of said heads and the respective pillow-block cylinder for oscillating said suspension member, and thus said rail structure, about said longitudinal axis.

8 more elements

Dependencies are inferred from the claim text.