In a sickle cutting system, including a plurality of guard fingers in a row across a cutter bar with each guard finger having an upwardly facing ledger surface and a plurality of hold-down members with each hold-down member comprising at least one hold-down finger, the guard fingers and hold down fingers thus forming cooperating overlying pairs between which the blades pass in the cutting action the guard fingers having no portion elevated above the ledger surface thereof in front of the tip of the blade and the guard fingers and blades having lengths from the cutter bar arranged such that a forwardmost tip of the guard finger is forward of the tip of the blade.

Decisive modifications are proposed to a cutting system reducing cutting losses and having a floating disk, in order to improve the efficiency of the system. The lower finger (1) cuts at the lower level and has a tip pointing upwards to prevent the finger from entering the ground; weeds passing past the lower finger pass over the upper finger (3), the accumulation of branches between the fingers being thus prevented. The upper finger (3) has a guard (4) that prevents grains from dropping out of the cutting platform, and the guard is also used to mount two bearings which act to orient the cutter bar (2).

Decisive modifications are proposed to a cutting system reducing cutting losses and having a floating disk, in order to improve the efficiency of the system. The lower finger (1) cuts at the lower level and has a tip pointing upwards to prevent the finger from entering the ground; weeds passing past the lower finger pass over the upper finger (3), the accumulation of branches between the fingers being thus prevented. The upper finger (3) has a guard (4) that prevents grains from dropping out of the cutting platform, and the guard is also used to mount two bearings which act to orient the cutter bar (2).

In a sickle cutting system, it has been found that a significant reduction in average stubble length, which is calculated based on the distance crop is pushed forwardly without cutting occurring, can be obtained by a combination of the features where the length of the cutting edge of each knife blade from a transverse rearmost cutting line at which a cutting action occurs is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.2 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

In a sickle cutting system, it has been found that a significant reduction in average stubble length, which is calculated based on the distance crop is pushed forwardly without cutting occurring, can be obtained by a combination of the features where the length of the cutting edge of each knife blade from a transverse rearmost cutting line at which a cutting action occurs is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.2 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

An agricultural vehicle includes a chassis and a header carried by the chassis. The header includes a cutterbar with at least one cutting unit. The at least one cutting unit includes a rotary driver; a rotatable disc coupled to the rotary driver; at least one knife mount coupled to a disc surface of the rotatable disc and including a locking portion biased toward the disc surface; and a knife locked in at least one direction by the locking portion, the knife defining at least one cutting edge.

In a sickle cutting system, it has been found that a significant reduction in average stubble length, which is calculated based on the distance crop is pushed forwardly without cutting occurring, can be obtained by a combination of features where the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.2 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex. Each blade has at least one cut out opening through the blade extending from a rear edge of the opening adjacent to but spaced from a rear edge of the blade toward the tip.

In a sickle cutting system, it has been found that a significant reduction in average stubble length, which is calculated based on the distance crop is pushed forwardly without cutting occurring, can be obtained by a combination of features where the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.2 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex. Each blade has at least one cut out opening through the blade extending from a rear edge of the opening adjacent to but spaced from a rear edge of the blade toward the tip.

In a sickle cutting system including a plurality of guard fingers at spaced positions across a cutter bar across which a reciprocating sickle knife passes, each guard finger has a forwardly projecting tip portion in front of a ledger surface and a rearwardly projecting tang portion connected to a rear end of the tip portion and extending therefrom over the ledger surface to a rear edge of the tang portion located over the blade. The lower surface of the tang portion includes a first portion adjacent the tip portion which is generally parallel to the ledger surface and a second portion adjacent the rear edge which is inclined at an angle away from the ledger surface. The width of the tang portion across the rear of the tang portion is equal to or greater than 1.5 inches.

In a sickle cutting system including a plurality of guard fingers at spaced positions across a cutter bar across which a reciprocating sickle knife passes, each guard finger has a forwardly projecting tip portion in front of a ledger surface and a rearwardly projecting tang portion connected to a rear end of the tip portion and extending therefrom over the ledger surface to a rear edge of the tang portion located over the blade. The lower surface of the tang portion includes a first portion adjacent the tip portion which is generally parallel to the ledger surface and a second portion adjacent the rear edge which is inclined at an angle away from the ledger surface. The width of the tang portion across the rear of the tang portion is equal to or greater than 1.5 inches.