Troweling machine
OwnerJohn W. Sutherlandinventor
Life of this patent
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Abstract
A troweling machine having a variable troweling diameter may be constructed by providing such a machine with adjustable length spider arms, an adjustable circumference guard ring, an adjustable length guard ring stabilizer arm and any combination of two of such adjustable features. A universal blade mounting adaptor allows the machine to accept blades of various sized as well as various specific attachment arrangements. A pivotal mount for the guard ring permits it to be swung upwardly from its normal horizontal position.
Claims42
In a troweling machine having a housing, a rotatable shaft extending downwardly therefrom, a plurality of troweling blades having outer ends, means for mounting said blades to said shaft, guard means for shielding the outer ends of said blades from contact with obstacles, a stabilizer arm connecting said guard means to said housing, the improvement comprising, in combination, said mounting means including adjustable means for adjusting the distance between said shaft and the outer ends of said blades, and said stabilizer arm including length adjusting means for adjusting the distance between said shaft and said guard means.
In a troweling machine having a housing, a rotatable shaft extending downwardly therefrom, a guard ring having a circumference and a stabilizer arm connecting said guard ring to said housing, in combination, said stabilizer arm including length adjusting means for adjusting the distance between said shaft and said guard ring and said guard ring including adjustable means for adjusting the circumference of said guard ring.
In a troweling machine having a housing, a rotatable shaft extending downwardly therefrom, a plurality of troweling blades having outer ends, means for mounting said blades to said shaft, a guard ring for shielding the outer ends of said blades from contact with obstacles, said guard ring having a circumference, a stabilizer arm connecting said guard ring to said housing, the improvement comprising, in combination, said mounting means including adjustable means for adjusting the distance between said shaft and the outer ends of said blades, and said guard ring including adjustable means for adjusting the circumference of said guard ring.
In a troweling machine having a housing, a rotatable shaft extending downwardly therefrom, a plurality of troweling blades having outer ends, means for mounting said troweling blades to said shaft, a guard ring for shielding the outer ends of said blades from contact with obstacles, said guard ring having a circumference, a stabilizer arm connecting said guard ring to said housing, the improvement comprising, in combination, said mounting means including adjustable means for adjusting the distance between said shaft and the outer ends of said blades, said stabilizer arm including length adjusting means for adjusting the distance between said shaft and said guard means, and said guard ring including adjustable means for adjusting the circumference of said guard ring.
In a troweling machine having a housing, a rotatable shaft extending downwardly therefrom, a plurality of troweling blades, each said troweling blade having an inner end and an outer end, and means for mounting said blades to said shaft, said mounting means including, in combination, adjustable means for adjusting the distance between said shaft and the outer ends of said blades;
- and a plurality of troweling blade mounting adaptors, each said adaptor having a blade securing portion and a handle portion, so constructed and arranged that said blade securing portion is releasably attachable to both bar-type and channel-type troweling blades irrespective of the distance from the inner edge to the outer edge thereof.
A universal blade mounting adaptor for releasably attaching a troweling blade to a spider arm of an automatic troweling machine said blade having an upper side with means for securing said blade to said adaptor thereon, comprising:
- a. a blade securing portion having a proximal end, a distal end, an upwardly oriented side and a downwardly oriented side and having a longitudinal groove in said downwardly oriented side, said groove being of sufficient length, width and depth to accept a bar-type means for securing;
- and having a pair of lateral grooves in said downwardly oriented side, said pair being parallel to said longitudinal groove and of sufficient length, width and depth and having sufficient distance between said pair to accept a channel-type means for securing;
- and having a plurality of holes extending vertically through said blade securing portion disposed along the length of said longitudinal groove and equi-distantly between said pair of lateral grooves, said holes being oriented to extend between the downwardly oriented side and the upwardly oriented side and sized and spaced from each other so as to allow a portion of said means for securing to extend therethrough, and
- b. a handle, attached to the upwardly oriented side of said blade securing portion and adapted to be releasably connected to said spider arm.
Dependencies are inferred from the claim text.