초록 ▼

A tractor drawn scraper apparatus with folding wings includes a main frame with a main blade assembly depending therefrom and wing frames with wing blade assemblies depending therefrom. The wing frames are pivotally connected to laterally opposite ends of the main frame and are pivoted by the action

A tractor drawn scraper apparatus with folding wings includes a main frame with a main blade assembly depending therefrom and wing frames with wing blade assemblies depending therefrom. The wing frames are pivotally connected to laterally opposite ends of the main frame and are pivoted by the action of hydraulic cylinders connected between the main frame and the wing frames respectively. The wing frames are lowered for soil engagement and raised for transport. A wheel frame includes a wheel frame axle pivotally connected to the main frame by way of the main blade assembly and having a pair of radial wheel support arms with ground engaging wheels journaled thereon. A pair of wheel frame cylinders engaged between the main frame and the wheel support arms are activated to raise the wheels for soil engagement by the blade assemblies and to lower the wheels for transport. A tongue assembly extends forwardly from the main frame for hitching to a tractor to draw the blade assemblies over a soil surface.

대표청구항 ▼

[ What is claimed and desired to secure by Letters Patent is:] [1.] A drawn land scraper apparatus comprising:(a) a laterally extending main scraper frame having opposite lateral ends;(b) a hitch assembly extending forwardly from said main scraper frame and enabling hitching said apparatus to a draf

[ What is claimed and desired to secure by Letters Patent is:] [1.] A drawn land scraper apparatus comprising:(a) a laterally extending main scraper frame having opposite lateral ends;(b) a hitch assembly extending forwardly from said main scraper frame and enabling hitching said apparatus to a draft vehicle;(c) a main scraper blade extending transverse to said main scraper frame, depending from said main scraper frame, and configured to grade a soil surface upon engaging same when said apparatus is drawn by said draft vehicle;(d) a wing scraper blade attached to a wing frame which, in turn, is pivotally connected to one of said ends of said main scraper frame such that said wing frame and said wing blade are selectively pivotable about a substantially horizontal axis between a raised position and a lowered position, said wing blade being configured to grade said soil surface in said lowered position of said wing frame and being pivoted out of engagement with said soil surface when in said raised position; and(e) a wing motor engaged between said main scraper frame and said wing frame and selectively operable to pivot said wing blade about said substantially horizontal axis between said lowered position and said raised position.