Road working machines

Claim 2

A machine for removing road surfaces comprising a chassis having a longitudinal axis, forward and rearward rotary support means for said chassis, a rotary cutting device supported by said chassis for rotation about a substantially horizontal axis, said device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action, means for varying the height of said cutting device relative to the chassis, said cutting device being freely adjustable about a vertical axis between a transport position in which said axis of rotation extends generally parallel to the longitudinal axis of the chassis and an operating position in which said axis of rotation extends transversely of the chassis.

Claim 3

A machine as in claim 1, wherein said cutting device has a width greater than that of the track of the machine.

Claim 4

A machine for removing road surfaces comprising a chAssis, forward and rearward rotary support means for said chassis, a first support arm, means mounting said first arm to the chassis for rotation in a horizontal plane about a vertical axis, a second support arm disposed below said first arm and rotatable therewith, first pressure operable actuator means interconnecting said first and second arms and actuable to vary the angle between said arms, a support frame pivoted to said second arm, second pressure operable actuator means interconnecting said second arm and support frame and actuable to vary the angle between said support frame and second arm, and a rotary cutting device carried by said support frame for rotation about a substantially horizontal axis, said cutting device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action.

Claim 5

A machine for removing road surfaces comprising a chAssis, forward and rearward rotary support means for said chassis, a first support arm, means mounting said first arm to the chassis for rotation in a horizontal plane about a vertical axis, a second support arm disposed below said first arm and rotatable therewith, first pressure operable actuator means interconnecting said first and second arms and actuable to vary the angle between said arms, a support frame pivoted to said second arm, second pressure operable actuator means interconnecting said second arm and support frame and actuable to vary the angle between said support frame and second arm, and a rotary cutting device carried by said support frame for rotation about a substantially horizontal axis, said cutting device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action.

Claim 6

A machine as in claim 3, wherein the cutting device is disposed between the forward and rearward rotary support means within a space defined below a portal-like structure, said vertical axis being disposed nearer one set of rotary support means than the other, said vertical axis being asymmetrically disposed relative to the length of the cutting device.

Claim 7

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, a first plate-like support member rotatable relative to the chassis about a vertical axis, a second plate-like support member disposed below said first member and pivotable relative thereto about a first substantially horizontal axis, a support frame pivotable relative to said second member about a second substantially horizontal axis perpendicular to the first, means for effecting such pivotal movement, and a rotary cutting device carried by said support frame, for rotation about a substantially horizontal axis, said cutting device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action.

Claim 8

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, a first plate-like support member rotatable relative to the chassis about a vertical axis, a second plate-like support member disposed below said first member and pivotable relative thereto about a first substantially horizontal axis, a support frame pivotable relative to said second member about a second substantially horizontal axis perpendicular to the first, means for effecting such pivotal movement, and a rotary cutting device carried by said support frame, for rotation about a substantially horizontal axis, said cutting device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action.

Claim 9

A machine as in claim 5, wherein said first horizontal axis intersects the vertical axis.

Claim 10

A machine as in claim 5, wherein said second horizontal axis is spaced from said vertical axis.

Claim 11

A machine as in claim 5, wherein said cutting device is rotatable about said vertical axis through substantially 180 degrees.

Claim 12

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, a rotary cutting device supported by said chassis for rotation about a substantially horizontal axis, said device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action, means for varying the height of said cutting device relative to the chassis, said cutting device being adjustable about a vertical axis between a position in which said axis of rotation extends longitudinally of the chassis and a position in which said axis of rotation extends transversely of the chassis, wherein said vertical axis is adjacent said rearward rotary support means, said vertical axis is located asymmetrically of the length of said drum whereby said drum can be swung to a position in which it projects from one or other side of the chassis, there being a slight amount of overlap between the two positions of the drum.

Claim 13

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, a rotary cutting device supported by said chassis for rotation about a substantially horizontal axis, said device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action, means for varying the height of said cutting device relative to the chassis, said cutting device being adjustable about a vertical axis between a position in which said axis of rotation extends longitudinally of the chassis and a position in which said axis of rotation extends transversely of the chassis, wherein said vertical axis is adjacent said rearward rotary support means, said vertical axis is located asymmetrically of the length of said drum whereby said drum can be swung to a position in which it projects from one or other side of the chassis, there being a slight amount of overlap between the two positions of the drum.

Claim 14

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, a rotary cutting device supported by said chassis for rotation about a substantially horizontal axis, means rotating said cutting device, said device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action, means for varying the height of said cutting device relative to the chassis, said cutting device being rotatable about a vertical axis through about 180* between two operating positions in which said axis of rotation extends transversely of the chassis.

Claim 15

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, a rotary cutting device supported by said chassis for rotation about a substantially horizontal axis, means rotating said cutting device, said device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action, means for varying the height of said cutting device relative to the chassis, said cutting device being rotatable about a vertical axis through about 180* between two operating positions in which said axis of rotation extends transversely of the chassis.

Claim 16

A machine as in claim 10, wherein said cutting device is arranged asymmetrically of the said vertical axis to enable it to project from a different side of the chassis in each operating position.

Claim 17

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, drive means for driving said chassis in a predetermined direction of advance, a rotary cutting device supported by said chassis for rotation about a substantially horizontal axis, drive means for rotating the cutting device in a predetermined direction of rotation, said device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action, means for varying the height of said cutting device relative to the chassis, said cutting device being rotatable about a vertical axis between two operating positions, in one of which the cutting device is positioned so as to perform a climb-milling operation and in the other of which the cutting device is positioned to perform a plunge-cut milling operation, when said chassis is driven in said predetermined direction of advance and said cutting device is rotated in said predetermined direction of rotation.

Claim 18

A machine for removing road surfaces comprising a chassis, forward and rearward rotary support means for said chassis, drive means for driving said chassis in a predetermined direction of advance, a rotary cutting device supported by said chassis for rotation about a substantially horizontal axis, drive means for rotating the cutting device in a predetermined direction of rotation, said device being provided on its circumference with cutting picks whereby during rotation said device removes the road surface by a milling action, means for varying the height of said cutting device relative to the chassis, said cutting device being rotatable about a vertical axis between two operating positions, in one of which the cutting device is positioned so as to perform a climb-milling operation and in the other of which the cutting device is positioned to perform a plunge-cut milling operation, when said chassis is driven in said predetermined direction of advance and said cutting device is rotated in said predetermined direction of rotation.