Snatch block assembly

Abstract

A snatch block assembly for engaging a line between its ends includes a pair of arms mounted at their inner ends to a base. Engagement structure, in the form of a roller, is mounted to the outer end of each arm. The arms are either fixed in position relative to the base or are pivotably mounted to the base. The line is engageable with the engagement structure by inserting a line between the arms, with the portion of the line engaging the arms being parallel to the axes of rotation of the rollers. The line is then moved into engagement with the rollers so as to pass through a passage defined between the facing surfaces of the arms. The rollers thus engage the line between its ends to temporarily maintain the line in a desired position. When the arms are pivotably mounted to the base, movement of the line between the arms engages side edges of the arms to move the arms apart, and a biasing mechanism such as a spring moves the arms back together when the line is moved into engagement with the rollers. The line is engaged with the snatch block assembly without the need for manual operation of a latching or unlatching mechanism. This greatly simplifies engagement of the line and disengagement of the line from the snatch block assembly.