Concrete surfacing machine

Claim 2

A concrete surfacing machine comprising: a carriage including a frame, wheels at each end of said frame supporting said carriage for movement along a concrete surface to be worked, said frame including longitudinally telescoping portions at each end mounting said wheels for relative adjustment of said wheels lengthwise of said frame to vary said wheel spacing, adjusting means comprising means for relatively extending and contracting said frame portions, to adjust the wheels at each end of said frame lengthwise of said frame, and concrete surfacing means mounted on said frame between said wheels.

Claim 3

The concrete surfacing machine of claim 1 wherein: said frame comprises a main frame portion between said wheels and frame means mounted at each end of the frame portion for longitudinal telescopic adjustment relative to said main frame portion, and mounting wheels for adjustment of the latter wheels lengthwise of said frame to vary said wheel spacing.

Claim 4

The concrete surfacing machine of claim 1, wherein: said frame comprises a main frame portion between said wheels and front and rear end frame portions mounted on the respective ends of said main frame portion for longitudinal telescopic adjustment relative to said main frame portion, each of the frame portions mounting respective wheels for adjustment of the respective wheels at the frame ends to vary said wheel spacing, and said adjusting means comprises means for independently extending and contracting said front and rear end frame portions relative to said main frame portion.

Claim 5

The concrete surfacing machine of claim 1, wherein: said frame has front and rear ends and said wheels include a pair of front wheels at said front frame end and a pair of rear wheels at said rear frame end, said frame includes a main central frame portion, a front frame portion mounted on the front end of the main frame portion for longitudinal telescopic adjustment relative to said main frame portion and mounting said front wheels for longitudinal adjustment relative to said main frame portion, and a pair of rear frame members mounted on the rear end of said main frame portion for longitudinal telescopic adjustment relative to said main frame portion and mounting said rear wheels for longitudinal adjustment relative to said main frame portion, and said adjusting means comprises means for independently adjusting said front telescoping frame portion and rear telescoping frame members to adjust said wheel spacing.

Claim 6

The concrete surfacing machine of claim 1 or claim 3 or claim 4, including: means for vertically adjusting the wheels at the frame rear end relative to said frame, said rear wheels being positioned within the lateral extent of said concrete surfacing means to engage the concrete surface after surfacing thereof by the surfacing means to provide an accurate control reference for depth of cut by the surfacing means.

Claim 7

The concrete surfacing machine of claim 5, including: means for independently vertically adjusting the front wheels relative to said frame.

Claim 8

The concrete surfacing machine of claim 3 including: means for relatively vertically adjusting said wheels relative to said frame.

Claim 9

The concrete surfacing machine of claim 1 or claim 3, including: means for independently vertically adjusting said wheels relative to said frame.

Claim 10

The concrete surfacing machine of claim 4, including: power operated means for vertically adjusting said front wheels relative to said front frame portion, and means for independently vertically adjusting said rear wheels relative to said rear frame members.

Claim 11

A concrete surfacing machine according to claim 1 or claim 3, and further comprising: propulsion means for propelling said carriage along said surface comprising winch and cable means for exerting a towing force on said carriage.

Claim 12

The concrete surfacing machine of claim 10, wherein: said winch and cable means comprises a winch on said carriage including a cable to be anchored at its free end relative to said surface.

Claim 13

A concrete surfacing machine comprising: a carriage including a base frame, and wheels on said frame supporting said carriage for movement along a concrete surface to be worked, concrete surfacing means on said carriage, and means spaced laterally from the carriage for supporting the carriage on a sloping concrete surface, guide means movable along said carriage supporting means, and cable means extending between the carriage and the supporting means for tethering said carriage to said guide means for movement of the carriage and guide means in unison lengthwise of said carriage supporting means.

Claim 14

A concrete surfacing machine comprising: a carriage including a base frame, and wheels on said frame supporting said carriage for movement along a concrete surface to be worked, concrete surfacing means on said carriage, and means spaced laterally from the carriage for supporting the carriage on a sloping concrete surface, guide means movable along said carriage supporting means, and cable means extending between the carriage and the supporting means for tethering said carriage to said guide means for movement of the carriage and guide means in unison lengthwise of said carriage supporting means.

Claim 15

The concrete surfacing machine of claim 12, wherein: said carriage supporting means includes a guide rail anchored relative to said surface with the rail extending transverse to the slope of said surface.

Claim 16

A concrete surfacing machine comprising: a carriage including a base frame, and wheels on said frame supporting said carriage for movement along a concrete surface to be worked, concrete surfacing means on said carriage, means for supporting said carriage on a sloping concrete surface, guide means movable along said carriage supporting means, and cable means for tethering said carriage to said guide means for movement of the carriage and guide means in unison lengthwise of said carriage supporting means, upper support frame means on the base frame, and equalizing winch means including a second cable secured to said upper support frame means to the tethering cable means at a point between the carriage and the guide means to produce force on the upper support frame means to equalize the load across said concrete surfacing means.

Claim 17

A concrete surfacing machine comprising: a carriage including a base frame, and wheels on said frame supporting said carriage for movement along a concrete surface to be worked, concrete surfacing means on said carriage, means for supporting said carriage on a sloping concrete surface, guide means movable along said carriage supporting means, and cable means for tethering said carriage to said guide means for movement of the carriage and guide means in unison lengthwise of said carriage supporting means, upper support frame means on the base frame, and equalizing winch means including a second cable secured to said upper support frame means to the tethering cable means at a point between the carriage and the guide means to produce force on the upper support frame means to equalize the load across said concrete surfacing means.

Claim 18

The concrete surfacing machine of claim 14, including: a propulsion cable secured to said carriage and guide means for towing said carriage and guide means lengthwise of said rail.

Claim 19

The concrete surfacing machine of claim 14 or claim 15, wherein: said tethering means comprises rotary drums on said carriage and cable extending between said drums and guide means, and means for rotating said drums to wind said cables on and unwind the cables from the drums.

Claim 20

The concrete surfacing machine of claim 14 or claim 15, including: propulsion means for propelling said carriage along said surface comprising first winch and cable means for exerting a towing force on said carriage.

Claim 21

The concrete surfacing machine of claim 17, wherein: said wheels are spaced lengthwise of said carriage, said surfacing means is located in the space between said wheels, and said carriage includes means for adjusting said wheel spacing.