Locking device for a disc harrow wing section

Claim 2

A locking device for a folding gang implement having an extension gang section pivotally connected on a main gang section for swinging movement between folded and extended positions comprising a latch member pivotally mounted to one of said main gang and extension gang sections adjacent their pivotal connection, a pin member secured to the other of said main gang and extension gang sections and extending into the path of said latch member as said extension gang is moved towards said extended position, where said latch member includes an elongated body having a guide surface facing towards and adapted to be engaged by said pin member and a cam lock slot extending from said guide surface crosswise to its length for receiving and holding said pin member upon said extension gang member reaching said extended position, spring means for urging said latch member to pivot towards said pin member, and an adjustable means for selectively varying said extended position of said extension gang section relative to said main gang section.

Claim 3

In a folding gang implement having an extension gang section pivotally connected on a main gang section, the combination comprising a first U-shaped member having its bight portion secured to one end of said main gang section with its pair of arms extending outwardly, a second U-shaped member having its bight portion secured to one end of said extension gang section with its pair of arms extending outwardly, a pivot pin extending between said pair of arms of said first and second U-shaped members for pivotally interconnecting the same, a latch member pivotally mounted to said extension gang section adjacent said second U-shaped member and extending beyond said first U-shaped member, a pin member extending from said first U-shaped member into the path of said latch member as said extension gang is moved towards said extended position, where said latch member includes an elongated body having a guide surface facing towards and adapted to be engaged by said pin member and a cam lock slot extending from said guide surface crosswise to its length for receiving and holding said pin member upon said extension gang member reaching said extended position, spring means for urging said latch member to pivot towards said pin member, and an adjustable means for selectively varying said extended position of said extension gang section relative to said main gang section.

Claim 4

In a folding gang implement having an extension gang section pivotally connected on a main gang section, the combination comprising a first U-shaped member having its bight portion secured to one end of said main gang section with its pair of arms extending outwardly, a second U-shaped member having its bight portion secured to one end of said extension gang section with its pair of arms extending outwardly, a pivot pin extending between said pair of arms of said first and second U-shaped members for pivotally interconnecting the same, a latch member pivotally mounted to said extension gang section adjacent said second U-shaped member and extending beyond said first U-shaped member, a pin member extending from said first U-shaped member into the path of said latch member as said extension gang is moved towards said extended position, where said latch member includes an elongated body having a guide surface facing towards and adapted to be engaged by said pin member and a cam lock slot extending from said guide surface crosswise to its length for receiving and holding said pin member upon said extension gang member reaching said extended position, spring means for urging said latch member to pivot towards said pin member, and an adjustable means for selectively varying said extended position of said extension gang section relative to said main gang section.

Claim 5

The combination of claim 2, wherein said adjustable means comprises a setscrew threadedly mounted through the bight portion of one of said first and second U-shaped members and extending towards the bight portion of the other of said first and second U-shaped members, whereby said setscrew is turned to selectively vary said extended position of said extension gang section relative to said main gang section.

Claim 6

A lOcking device for a folding gang implement having an extension gang section pivotally connected on a main gang section for swinging movement between folded and extended positions comprising a latch member pivotally mounted to one of said main gang and extension gang sections adjacent their pivotal connection, a pin member secured to the other of said main gang and extension gang sections and extending into the path of said latch member as said extension gang is moved towards said extended position, said latch member comprises an elongated body pivotally connected adjacent one of its ends to said one of said gang sections, said elongated body including a handle portion formed at the other of its ends, a guide surface formed along the lateral edge facing said pin member inwardly from said other end for engaging said pin member, and a cam lock slot formed intermediate its ends in a crosswise direction and extending from said guide surface in an arc curving about said pivotal connection, and spring means for urging said elongated body to swing towards said pin member, whereby said pin member enters said slot upon said extension gang section reaching said extended position and said elongated body pivots under the urging of said spring means to lock said pin member in place.

Claim 7

A lOcking device for a folding gang implement having an extension gang section pivotally connected on a main gang section for swinging movement between folded and extended positions comprising a latch member pivotally mounted to one of said main gang and extension gang sections adjacent their pivotal connection, a pin member secured to the other of said main gang and extension gang sections and extending into the path of said latch member as said extension gang is moved towards said extended position, said latch member comprises an elongated body pivotally connected adjacent one of its ends to said one of said gang sections, said elongated body including a handle portion formed at the other of its ends, a guide surface formed along the lateral edge facing said pin member inwardly from said other end for engaging said pin member, and a cam lock slot formed intermediate its ends in a crosswise direction and extending from said guide surface in an arc curving about said pivotal connection, and spring means for urging said elongated body to swing towards said pin member, whereby said pin member enters said slot upon said extension gang section reaching said extended position and said elongated body pivots under the urging of said spring means to lock said pin member in place.

Claim 8

In a folding gang implement having an extension gang section pivotally connected on a main gang section, the combination comprising a first U-shaped member having its bight portion secured to one end of said main gang section with its pair of arms extending outwardly, a second U-shaped member having its bight portion secured to one end of said extension gang section with its pair of arms extending outwardly, a pivot pin extending between said pair of arms of said first and second U-shaped members for pivotally interconnecting the same, a latch member pivotally mounted to said extension gang section adjacent said second U-shaped member and extending beyond said first U-shaped member, a pin member extending from said first U-shaped member into the path of said latch member as said extension gang is moved towards said extended position, said latch member comprises an elongated body pivotally connected adjacent one of its ends to said one of said gang sections, said elongated body including a handle portion formed at the other of its ends, a guide surface formed along the lateral edges facing said pin member inwardly from said other end for engaging said pin member, and a cam lock slot formed intermediate its ends in a crosswise direction and extending from said guide surface in an arc curving about said pivotal connection, and spring means for urging said elongated body to swing towards said pin member, whereby said pin member enters said slot upon said extension gang section reaching said extended position and said elongated body pivots under the urging of said spring means to lock said pin member in place.

Claim 9

In a folding gang implement having an extension gang section pivotally connected on a main gang section, the combination comprising a first U-shaped member having its bight portion secured to one end of said main gang section with its pair of arms extending outwardly, a second U-shaped member having its bight portion secured to one end of said extension gang section with its pair of arms extending outwardly, a pivot pin extending between said pair of arms of said first and second U-shaped members for pivotally interconnecting the same, a latch member pivotally mounted to said extension gang section adjacent said second U-shaped member and extending beyond said first U-shaped member, a pin member extending from said first U-shaped member into the path of said latch member as said extension gang is moved towards said extended position, said latch member comprises an elongated body pivotally connected adjacent one of its ends to said one of said gang sections, said elongated body including a handle portion formed at the other of its ends, a guide surface formed along the lateral edges facing said pin member inwardly from said other end for engaging said pin member, and a cam lock slot formed intermediate its ends in a crosswise direction and extending from said guide surface in an arc curving about said pivotal connection, and spring means for urging said elongated body to swing towards said pin member, whereby said pin member enters said slot upon said extension gang section reaching said extended position and said elongated body pivots under the urging of said spring means to lock said pin member in place.