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US 4,243,137 AGranted
Barn or pit floor scraper assembly and drive means therefor
AssigneeAgricultural Research & Development, Inc.
InventorFrank R. Laurenz
Life of this patent
Estimating the term…
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AssigneeAgricultural Research & Development, Inc.
InventorFrank R. Laurenz
Estimating the term…
A T-shaped scraper assembly is operatively connected to a drive unit via a cable assembly and is adapted to be pulled along the floor in one direction thus scraping manure or debris from the floor, and in the opposite direction to return the scraper assembly to the starting position. When moving in the non-scraping direction, means are provided to elevate the scraper blades slightly above the floor level. The scraper blades are floatably mounted vertically thus allowing them to follow the floor contours within limits and the width is adjustable within limits also. The drive unit includes a resilient or nonmetal main, grooved cable pulley and a resilient or nonmetal idler pulley situated at an angle so that the cable engaging around these pulleys runs relatively freely aligned in the cable grooves. The angling of the idler pulley relative to the main drive pulley reduces side friction between the cable and the grooves and between the cable portions where same cross one another. Means are provided to sense an obstruction and automatically shut off the mechanism.
A scraper system for barns or pit floors and the like comprising in combination a scraper assembly, and means for operatively connecting said scraper assembly to a source of power to move said scraper assembly back and forth across said floor, said scraper assembly including a hitch component, a frame extending outwardly on each side of said hitch component and a scraper blade component hingedly mounted to said frame and means to mount said scraper blade component for free-floating vertical movement relative to said frame, within limits, said scraper blade component including at least two scraper blades on each side of said hitch operatively connected to said frame, said two scraper blades being attached to said frame with adjacent ends overlapping one another, and means connecting said ends together for free-floating independent vertical movement within limits one relative to the other and each relative to said frame.
The system according to claim 21 further comprising a source of power for said scraper assembly, said source of power including a motor for driving said scraper assembly, a drive pulley assembly and an idler pulley assembly and a cable operatively extending around said pulley assemblies, one end of said cable being connected to one end of said hitch to move said scraper assembly in one direction, the other end of said cable being connected to the other end of said hitch to move said scraper assembly in the other direction.
A scraper assembly for barns or pit floors or the like comprising in combination a hitch component, a frame extending outwardly on each side of said hitch component and a scraper blade component hingedly mounted to said frame and means to mount said scraper blade component for free floating vertical movement relative to said frame within limits, said scraper blade component including at least two scraper blades on each side of said hitch operatively connected to said frame, said two scraper blades being attached to said frame with adjacent ends overlapping one another, and means connecting said ends together for free-floating independent vertical movement within limits one relative to the other and each relative to said frame.
Dependencies are inferred from the claim text.