Concrete-working machine with walking vibrators

Claim 2

A machine adapted for imparting vibrations to poured concrete at spaced intervals comprising frame means, at least one arm projecting forwardly of said frame means, pivot means pivotally supporting said arm on said frame means for substantially vertical, oscillating movement of said arm, power driven means connected to said arm at a point on said arm forwardly of said pivot means and providing said oscillating movement by the forward portion of said arm, said power driven means including means to change the amount of vertical oscillation of the forward ends of said arm, an elongated power-driven vibrator having its upper portion mounted on the forward portion of said arm and depending vertically therefrom, the lower end of said vibrator adapted to be moved up and down into and out of poured concrete by the oscillating movement of said forward portion of said arm.

Claim 3

A machine as claimed in claim 1, said machine having at least two of said arms contiguous to each other, and the respective elongated vibrators depending vertically therefrom being substantially aligned one behind the other.

Claim 4

A machine as claimed in claim 1, wherein said pivot means comprises substantially vertical, oscillatable arm means pivotally supported on said frame means and pivotally connected to said arm.

Claim 5

A machine as claimed in claim 3, said power driven means including a crank having a crank rod connected to said arm forwardly of said oscillatable arm means.

Claim 6

A machine as claimed in claim 4, and means rigidly attaching said crank rod to said arm whereby rotation of said crank imparts via its crank rod positive oscillating motion to said oscillatable arm means.

Claim 7

A machine as claimed in claim 5 wherein the crank arm of said crank orbits in the lower half of its rotation cycle in a rearward direction.

Claim 8

A machine as claimed in claim 3, said power driven means including a rotatable cam, and a cam follower for said cam mounted on said arm.

Claim 9

A machine as claimed in claim 1, and a rotatable auger extending transversely of said frame means behind said vibrator.

Claim 10

A machine as claimed in claim 8, a vertical strike-off plate extending transversely of said frame means and positioned behind said auger, and means mounting said plate on said frame means in vertically adjustable relation of said plate to said frame means.

Claim 11

A machine as claimed in claim 1, said vibrator having its upper portion pivotally supported on the forward portion of said arm by pivot means allowing forward and rearward pivotal movement of said vibrator.

Claim 12

A mAchine as claimed in claim 10, said vibrator comprising an elongated vibrator member driven by a motor on the upper end thereof.

Claim 13

A machine adapted for imparting vibrations to poured concrete at spaced intervals comprising frame means, at least one arm projecting forwardly of said frame means, means pivotally supporting said arm on said frame means, power driven means providing substantially vertical, oscillating movement by the forward portion of said arm, a power-driven vibrator depending from the forward portion of said arm and adapted to be moved up and down in poured concrete by the oscillating movement of said forward portion of said arm, said first-mentioned means comprising substantially vertical, oscillatable arm means pivotally supported on said frame means and pivotally connected to said arm, said power driven means including a rotatable cam and a cam follower for said cam mounted on said arm, and stop means coacting with said oscillatable arm means to limit pivotal movement of said arm means.

Claim 14

A machine adapted for imparting vibrations to poured concrete at spaced intervals comprising frame means, at least one arm projecting forwardly of said frame means, means pivotally supporting said arm on said frame means, power driven means providing substantially vertical, oscillating movement by the forward portion of said arm, a power-driven vibrator depending from the forward portion of said arm and adapted to be moved up and down in poured concrete by the oscillating movement of said forward portion of said arm, said first-mentioned means comprising substantially vertical, oscillatable arm means pivotally supported on said frame means and pivotally connected to said arm, said power driven means including a rotatable cam and a cam follower for said cam mounted on said arm, and stop means coacting with said oscillatable arm means to limit pivotal movement of said arm means.

Claim 15

A machine adapted for imparting vibrations to poured concrete at spaced intervals comprising frame means, at least one arm projecting forwardly of said frame means, means pivotally supporting said arm on said frame means, power driven means providing substantially vertical, oscillating movement by the forward portion of said arm, a power-driven vibrator depending from the forward portion of said arm and adapted to be moved up and down in poured concrete by the oscillating movement of said forward portion of said arm, said first-mentioned means comprising substantially vertical, oscillatable arm means pivotally supported on said frame means and pivotally connected to said arm, said power driven means including a rotatable cam and a cam follower for said cam mounted on said arm, and means mounting said follower on said arm and providing a plurality of positions for mounting said follower at longitudinally spaced intervals along said arm.

Claim 16

A machine adapted for imparting vibrations to poured concrete at spaced intervals comprising frame means, at least one arm projecting forwardly of said frame means, means pivotally supporting said arm on said frame means, power driven means providing substantially vertical, oscillating movement by the forward portion of said arm, a power-driven vibrator depending from the forward portion of said arm and adapted to be moved up and down in poured concrete by the oscillating movement of said forward portion of said arm, said first-mentioned means comprising substantially vertical, oscillatable arm means pivotally supported on said frame means and pivotally connected to said arm, said power driven means including a rotatable cam and a cam follower for said cam mounted on said arm, and means mounting said follower on said arm and providing a plurality of positions for mounting said follower at longitudinally spaced intervals along said arm.

Claim 17

A machine as claimed in claim 13, and means for mounting said oscillatable arm means on said frame means in a plurality of positions spaced in similar longitudinal intervals to said longitudinally spaced intervals along said arm.