Stone trap for threshing and separating machine
AssigneeSperry Rand Corporation
InventorsJames W. McDuffie, Claude K. Focht, Edward W. Rowland-Hill
Life of this patent
Estimating the term…
Abstract
The stone trap of the present invention is used in cooperation with the crop elevator of a threshing and separating machine. The crop elevator has an opening positioned in its bottom wall along the path of the incoming crop material. A pivotally mounted door is positioned above the opening. A lip is rigidly mounted around the periphery of the opening and extends below the crop elevator. This lip maintains the door in a closed position until the door has moved through a predetermined distance. The movement of the door is determined by the operation of a controlling means mounted to both the door and the crop elevator and a force exerting means operably associated with the controlling means.
Claims13
A threshing and separating machine comprising:
- a. a frame adapted to travel across a field,
- b. means mounted on the frame to thresh and separate grain from crop material,
- c. means mounted on said frame for elevating crop material from the field to said threshing and separating means, the elevating means having a door pivotally mounted along the path of the crop material and adapted to move between a closed and an opened position,
- d. means operably associated with said elevating means for controlling the movement of said door between its closed and opened positions, and
- e. means operably associated with the controlling means and supported by said elevating means adjacent the path for exerting a force against solid objects in said path, said force affecting operation of said controlling means to open said door and eject solid objects under conditions where said objects travel along said path in the vicinity of said door.
A threshing and separating mechine comprising:
- a. a frame adapted to travel across a field,
- b. means mounted on the frame to thresh and separate grain from crop material,
- c. means mounted on said frame for elevating crop material from the field to said threshing separating means, the elevating means having a door pivotally mounted along the path of the crop material and adapted to move between a closed and an opened position,
- d. means operably associated with said elevating means for controlling the movement of said door between the closed and opened positions, and
- e. means operably associated with the controlling means and including roller means supported by said elevating means adjacent the path and extending across and above said door for exerting a force against solid objects in said path, said force effecting operation of said controlling means to open said door and eject solid objects under conditions where the objects travel along said path in the vicinity of said door.
A threshing and separating machine comprising:
- a. a frame adapted to travel across a field,
- b. means mounted on the frame to thresh and separate grain from crop material,
- c. means mounted on said frame for elevating crop material from the field to said threshing and separating means, the elevating means having an opening positioned along the path of the crop material,
- d. a door pivotally mounted over the opening and adapted to move between a series of closed positions and an opened position,
- e. means mounted adjacent the periphery of said opening and extending from the bottom of said elevating means to prevent the opening of said door until said door has moved through a predetermined distance,
- f. means operably associated with said elevating means to control the movement of said door between the series of closed positions and the opened position, and
- g. means operably associated with the controlling means and supported by said elevating means adjacent the path and in the vicinity of said door for exerting a force against solid objects in said path, said force effecting operation of said controlling means to open said door and eject solid objects under conditions where the objects travel along said path in the vicinity of said door.
A threshing and separating machine comprising:
- a. a frame adapted to travel across a field,
- b. means mounted on the frame to thresh and separate grain from crop material,
- c. means mounted on said frame for elevating crop material from the field to the threshing and separating means, the elevating means comprising a casing having open end portions, and top, bottom and side portions, the bottom portion having an opening positioned along the path of the crop material, a door pivotally mounted over the opening and adapted to move between a series of closed positions and an opened position, and means movably mounted within the casing above the door for conveying material through said casing across said door,
- d. means mounted adjacent the periphery of said opening and extending from said bottom portion to prevent the opening of said door until said door has moved through a predetermined distance,
- e. means operably associated with said door to control the movement of said door between the series of closed positions and the opened position, and
- f. means operably associated with the controlling means and pivotally mounted to the side portions of said casing and positioned above and across said door for exerting a force against solid objects in said path, said force effecting operation of said controlling means to move said door through said series of closed positions to said opened position and to eject solid objects under conditions where said objects travel along said path in the vicinity of said door.
In a threshing and separating machine having a frame adapted to travel across a field, means mounted on the frame to thresh and separate grain from crop material, means mounted on said frame for elevating crop material from the field to said threshing and separating means, the elevating means having an opening positioned along the path of the crop material, a door pivotally mounted over the opening and adapted to move between a series of closed and an opened position,
- wherein the improvement comprises:
- means mounted adjacent the periphery of said opening and extending from the bottom of said elevating means to prevent the opening of said door until said door has moved through a predetermined distance, means operably associated with said elevating means to control the movement of said door between the series of closed positions and the opened position of said door, and a roller pivotally mounted to said elevating means and extending above and across said door for exerting a force against solid objects in said path, said force effecting operation of said controlling means to move said door through said series of closed positions to said opened position and to eject solid objects under conditions where said objects travel along said path in the vicinity of said door.
Dependencies are inferred from the claim text.