Mechanism for retaining the wing section of an implement in its raised position

Claim 2

In combination with an implement having a first section, a second section pivotally connected to the first section for movement between lowered and raised positions, an extensible and retractable hydraulic cylinder interconnecting said first and second sections and operable to move said second section between its lowered and raised positions, first pin means pivotally mounting one end of the hydraulic cylinder on the first section, and second pin means pivotally mounting the other end of the hydraulic cylinder on the second section, means for releasably retaining the second section in its raised position comprising: a link member mounted at one end on said first pin means and having pin-engaging means on its other end engageable with said second pin means when the second section is in its raised position.

Claim 3

The invention defined in claim 1 including means biasing said pin-engaging means into engagement with said second pin means when the second section is in its raised poSition.

Claim 4

The invention defined in claim 2 including means for selectively locking said pin-engaging means out of engagement with said second pin means.

Claim 5

The invention defined in claim 2 wherein said biasing means comprises support means on said first implement section, means mounting said link on said support means for movement of said pin-engaging means toward and away from a pin-engaging position, and spring means acting between said support means and said link member for biasing said pin-engaging means towards its pin-engaging position.

Claim 6

The invention defined in claim 4 including means on said second implement section engageable with said link as said second section is moved toward its raised position and operable to move said pin-engaging means away from its pin-engaging position.

Claim 7

The invention defined in claim 5 wherein said second pin means is engageable with said link as said second section is moved toward its raised position and operable to move said pin-engaging means away from its pin-engaging position.

Claim 8

The invention defined in claim 6 wherein said pin-engaging means comprises an aperture in said link adapted to receive said second pin means.

Claim 9

The invention defined in claim 4 including means on said support means for selectively locking said pin-engaging means out of its pin-engaging position.

Claim 10

The invention defined in claim 4 including guide means on said support means for guiding said second pin means into position to engage said pin-engaging means as said second implement section is moved toward its raised position.

Claim 11

The invention defined in claim 1 further characterized by a link member support on the first implement section adjacent said other end, said link member is connected to the support to yield axially with respect to the second pin means and has an outer end portion projecting toward the second section beyond the pin-engaging means and its connection to the support, said end portion being angled axially with respect to the second pin means and engageable with the latter as the second section moves from its lowered to its raised position.

Claim 12

The invention defined in claim 10 in which the pin-engaging means is a hole in said link member that receives the end of the second pin and the end of the second pin engages the outer end portion of the link as the second section is raised to thereby force the link axially outwardly to permit entry of the end into the hole.

Claim 13

The invention defined in claim 11 further characterized by an adjustable member movably supported on the support and manually adjustable for insertion between the link member and support to hold the link member and its pin-engaging means out of engagement with the second pin means.

Claim 14

In combination with an implement having a first section, a second section pivotally connected to the first section for movement between lowered and raised positions, an extensible and retractable hydraulic cylinder interconnecting said first and second sections and operable to move said second section between its lowered and raised positions, first pin means pivotally mounting one end of the hydraulic cylinder on the first section, and second pin means pivotally mounting the other end of the hydraulic cylinder on the second section, means for releasably retaining the second section in its raised position comprising: a link member mounted at one end on said first section and having pin-engaging means on its other end engageable with said second pin means when the second section is in its raised position, a link member support on said first section adjacent the other end of said link member, said link member being connected to the support to yield axially with respect to the second pin means and having an outer end portion projecting toward the second section beyond the pin-engaging means and its connection to the support, said end portion being angled axially with respect to the second pin means and engageable with the latter as the second section moves from its lowered to its raised position.

Claim 15

In combination with an implement having a first section, a second section pivotally connected to the first section for movement between lowered and raised positions, an extensible and retractable hydraulic cylinder interconnecting said first and second sections and operable to move said second section between its lowered and raised positions, first pin means pivotally mounting one end of the hydraulic cylinder on the first section, and second pin means pivotally mounting the other end of the hydraulic cylinder on the second section, means for releasably retaining the second section in its raised position comprising: a link member mounted at one end on said first section and having pin-engaging means on its other end engageable with said second pin means when the second section is in its raised position, a link member support on said first section adjacent the other end of said link member, said link member being connected to the support to yield axially with respect to the second pin means and having an outer end portion projecting toward the second section beyond the pin-engaging means and its connection to the support, said end portion being angled axially with respect to the second pin means and engageable with the latter as the second section moves from its lowered to its raised position.

Claim 16

The invention defined in claim 13 wherein said link member is mounted at one end on said first pin means.

Claim 17

The invention defined in claim 13 in which the pin-engaging means is a hole in said link member that receives the end of the second pin and the end of the second pin engages the outer end portion of the link as the second section is raised to thereby force the link axially outwardly to permit entry of the end into the hole.

Claim 18

The invention defined in claim 15 further characterized by an adjustable member movably supported on the support and manually adjustable for insertion between the link member and support to hold the link member and its pin-engaging means out of engagement with the second pin means.