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US 4,023,771 AGranted
Means for engaging, lifting and transporting concrete pipe molds
AssigneeConcrete Pipe Machinery Company
InventorRonald J. Walchek
Life of this patent
Estimating the term…
Abstract
Improvements in three-piece concrete pipe molds and means and devices for handling and transporting such molds both when filled and empty; improvements in mold handling apparatus, or devices attachable both to the lift mechanism of a vehicle and a three-piece pipe mold and useable for such purposes; a versatile adaptor which will handle and transport, in its various configurations, concrete pipe molds of the most varied sizes and configurations when mounted on the lift mechanism of a vehicle.
Claims5
A device for forming and handling concrete pipe adapted for attachment to a vehicle having a lifting mechanism comprising, in combination:
- a mold operating to define the outer configuration of a concrete pipe comprising:
- at least three mold sections normally disposed in upstanding positions;
- each of said sections defining a longitudinal segment of the outer configuration of the pipe and being complementary and juxtaposable at longitudinal junctures;
- latching means formed along one of said longitudinal junctures between a first two of said three sections for disengageably latching said first two sections together;
- hinge means formed along the other two of said longitudinal junctures between said first two sections and the third one of same;
- said hinged mold sections adapted to stand upright without lateral support;
- and
- coupling means connected to said third mold section for disengageable securement thereto of means for handling said mold;
- said coupling means comprising:
- a pair of double hook carrying members each secured to said mold third section;
- the members laterally spaced from one another on said mold third section, and
- the hooks spaced vertically from one another on each said member and opening downwardly;
- a mold handling apparatus comprising:
- a frame made up of a first pair of normally vertical rigid plates connected to one another and spaced apart by a pair of elongate normally horizontal rigid shafts;
- a second pair of normally vertical rigid plates mounted on said shafts and spaced laterally from one another;
- means on said first pair of plates for attaching said frame to the lifting mechanism of a vehicle, and
- means on said second pair of plates for removable engagement with said concrete pipe mold;
- said latter means comprising a pair of vertically spaced, normally horizontal stub shafts fixedly attached to each of said second pair of plates;
- the said pairs of shafts movable laterally towards and away from one another for adjustments to engage the hooks of the said hook carrying members of different size molds by translation of the said second pair of plates laterally towards and away from one another on said frame shaft.
16 more elements
A device for forming and handling concrete pipe adapted for attachment to a vehicle having a lifting mechanism comprising, in combination:
- a mold operating to define the outer configuration of a concrete pipe comprising:
- at least three mold sections normally disposed in upstanding positions;
- each of said sections defining a longitudinal segment of the outer configuration of the pipe and being complementary and juxtaposable at longitudinal junctures;
- latching means formed along one of said longitudinal junctures between a first two of said three sections for disengageably latching said first two sections together;
- hinge means formed along the other two of said longitudinal junctures between said first two sections and the third one of same;
- said hinged mold sections adapted to stand upright without lateral support;
- and
- coupling means connected to said third mold section for disengageable securement thereto of means for handling said mold;
- a mold handling apparatus, comprising:
- a frame made up of a first pair of normally vertical rigid plates connected to one another and spaced apart by a pair of elongate, normally horizontal, rigid shafts;
- a second pair of normally vertical rigid plates mounted on said shafts and spaced laterally from one another;
- means on said first pair of plates for attaching said frame to the lifting mechanism of a vehicle;
- means on said second pair of plates for removable engagement with said concrete pipe mold;
- each one of the second pair of plates C-shaped in side view and the means on said second pair of plates for removable engagement with said concrete pipe mold mounted on each leg of the C, and
- a pair of members pivotally mounted on each of said second pair of plates intermediate the upper and lower ends of the latter, each of said members carrying means for removable engagement with said concrete pipe mold, and pivotable means for first fixing the position of said members parallel to the C-legs of said second pair of plates and at least one position at right angles thereto.
12 more elements
Dependencies are inferred from the claim text.