Sling assembly for lifting sheet material
AssigneePPG Industries, Inc.
InventorJames R. Rowley
Life of this patent
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AssigneePPG Industries, Inc.
InventorJames R. Rowley
Estimating the term…
A glass pack tilted against a support member is lifted by a sling assembly including a spreader bar, a pair of slings each having a half bridle and a protective shoe. Each of the slings includes (1) a first strap portion having its course along one side of the pack, over the shoe, and around the bottom edge of the pack and (2) a second strap portion secured to the end of the first strap portion. The free ends of the slings are secured to the spreader bar and spaced relative to one another to engage the pack at its 1/5 points. The half bridle has one end secured to the second strap portion with its second end engaging the adjacent side of the pack to prevent racking of the pack when handled by the sling assembly. The shoe has a generally U shaped configuration and a pair of spaced pins each rotatably mounted between opposed legs. The rotatably mounted pins facilitate movement of the first strap portion when the stack is lifted by the sling assembly from the tilted position to an upright position.
In a sling assembly for lifting at least one sheet wherein the sling assembly is of the type having a pair of slings secured in spaced relationship on lifting means, the improvement comprising:
In a sling assembly for lifting a pack of sheets wherein the sling assembly is of the type having a pair of slings secured in spaced relationship on lifting means, the improvement comprising:
A protective shoe for a sling, comprising:
A protective shoe for a sling assembly, comprising:
A method of lifting at least one sheet having a pair of opposed major surfaces, the at least one sheet supported in a generally vertical position, comprising the steps of:
Dependencies are inferred from the claim text.