Locking mechanism for an arm of an agricultural header

An agricultural header, comprising:

• a frame;
• an arm pivotally coupled to the frame, wherein the arm is configured to rotate about a pivot axis relative to the frame, and the arm is configured to support a cutter bar assembly;
• and
• a locking mechanism configured to selectively block rotation of the arm about the pivot axis, wherein the locking mechanism comprises:
• a pin movably coupled to a first element of the agricultural header, wherein the pin is configured to move between a first pin position and a second pin position relative to the first element, wherein the first element comprises one of the arm and the frame;
• a biasing assembly configured to selectively urge the pin toward the first pin position and toward the second pin position;
• and
• a mount non-movably and non-rotatably coupled to a second element of the agricultural header, wherein the second element comprises the other of the arm and the frame;
• wherein the mount has an opening, the pin is disposed within the opening, the opening has a first portion and a second portion, the first portion is configured to receive the pin while the pin is in the first pin position, the second portion is configured to receive the pin while the pin is in the second pin position, the first portion is configured to block relative movement between the pin and the mount about the pivot axis to block rotation of the arm, and the second portion is configured to enable relative movement between the pin and the mount about the pivot axis to enable rotation of the arm.

A locking mechanism, comprising:

• a pin configured to be movably coupled to a first element of an agricultural header, such that the pin is movable between a first pin position and a second pin position relative to the first element, wherein the first element comprises one of an arm and a frame of the agricultural header;
• an actuator assembly comprising an actuator configured to selectively urge the pin toward the first pin position and toward the second pin position;
• and
• a mount configured to non-movably and non-rotatably couple to a second element of the agricultural header, wherein the second element comprises the other of the arm and the frame;
• wherein the arm is configured to support a cutter bar assembly of the agricultural header, the arm is configured to rotate about a pivot axis relative to the frame, the mount has an opening, the pin is disposed within the opening, the opening has a first portion and a second portion, the first portion is configured to receive the pin while the pin is in the first pin position, the second portion is configured to receive the pin while the pin is in the second pin position, the first portion is configured to block relative movement between the pin and the mount about the pivot axis to block rotation of the arm, and the second portion is configured to enable relative movement between the pin and the mount about the pivot axis to enable rotation of the arm.