Tramlining device for seed drill
AssigneeMassey-Ferguson Services N.V.
InventorAlfred J. Bailey
Life of this patent
Estimating the term…
Abstract
A tramlining device is provided for a seed drill having shutters associated with respective seed spouts and controlled by individual fluid pressure operated actuators for improved flexibility in selecting the tramline spacing. The actuators are preferably such that when pressurized they close the shutters to produce tramlines. Fluid pressure is tapped from the rams that force the coulters into work. Preferably, a control valve in the fluid supply line comprises a valve member that is urged closed by the supply pressure but is opened by a plunger controlled by a bout register. Preferably, a solenoid operated plunger is provided to override operation of the bout register.
Claims13
A tramlining device for use with a seed drill having a hopper and a series of coulters mounted on a frame with means for raising and lowering said coulters, comprising, bout registering means for registering a number of successive bouts, indexing means responsive to raising of the coulters at the end of successive bouts and operative to index said bout registering means between successive registered bout numbers, individual inhibiting means each adapted to be changed between an inoperative state in which the discharge of seed or other granular material is permitted from a respective drill spout and an operative state in which such discharge is inhibited, and linkage means which responds to selected bout numbers registered by said bout registering means to change the state of said inhibiting means, the linkage means including a separate fluid pressure operated actuator to change the state of each inhibiting means and valve means controlled by the bout registering means for supplying pressurized fluid to said actuator at selected registered bout numbers.
A tramlining device for use with a seed drill having a hopper and a series of coulters mounted on a frame with means for raising and lowering said coulters, comprising, bout registering means for registering a number of successive bouts, indexing means responsive to raising of the coulters at the end of successive bouts and operative to index said bout registering means between said successive registered bout numbers, inhibiting means adapted to be changed between an inoperative state in which the discharge of seed or other granular material is permitted from an associated drill spout and an operative state in which such discharge is inhibited, and linkage means including at least one fluid pressure operated actuator that is adapted to change the inhibiting means into its operative state when subjected to pressurized fluid and biassing means acting to return the inhibiting means to its inoperative state when the actuator is depressurized.
A tramlining device for use with a seed drill having a hopper and a series of coulters mounted on a frame with means for raising and lowering said coulters, comprising, bout registering means for registering a number of successive bouts;
- indexing means responsive to raising of the coulters at the end of successive bouts and operative to index said bout registering means between said successive registered bout numbers;
- inhibiting means adapted to be changed between an operative state in which the discharge of seed or other granular material is permitted from an associated drill spout and an operative state in which such discharge is inhibited;
- and linkage means including at least one fluid pressure operated actuator which, when pressurized at a working pressure level, changes the state of the inhibiting means from one of said states to the other, and valve means controlled by the bout registering means for supplying fluid to and exhausting fluid from said actuator at selected registered bout numbers, said valve means including a valve seat across which the flow of fluid to and from said actuator takes place, a valve member arranged to be acted upon by fluid passing to the actuator so as to be moved toward said seat by such fluid and a plunger separate from the valve member and arranged to be displaceable by the bout registering means to unseat the valve member to allow the flow of pressurized fluid to the actuator;
- and biassing means arranged to effect the reverse change of state to that effected by the actuator by forcing fluid from the actuator when the level of pressure supplied by the valve means to the actuator falls from said working level.
A device as claimed in any one of the preceding claims which includes a solenoid-operated over-ride mechanism which when operated prevents the indexing of the bout registering means.
A tramlining device for use with a seed drill having a hopper and a series of coulters mounted on a frame with means for raising and lowering said coulters, comprising, bout registering means for registering a number of successive bouts, indexing means responsive to raising of the coulters at the end of successive bouts and operative to index said bout registering means between said successive registered bout numbers, inhibiting means adapted to be changed between an operative state in which the discharge of seed or other granular material is permitted from an associated drill spout and an operative state in which such discharge is inhibited, and linkage means which responds to selected bout numbers registered by said bout registering means to change the state of said inhibiting means, and a solenoid-operated over-ride mechanism which when operated prevents the indexing of the bout registering means in response to said changes between successive bouts.
Dependencies are inferred from the claim text.