Abstract: The present invention relates to a spanner having a toggle bar installed in at least a jaw and allowed to be rotated in one direction for tightening or releasing a bolt (or nut) continually by continuous operation of rotating the spanner's lever in one and other converse directions repeatedly in a state of gripping the bolt, which is also easily operative for tightening or releasing a bolt (or nut), especially when placed in a narrow gap. The spanner is constructed to comprise a lever; a jaw and a second jaw respectively extending from both sides of the lead end of the lever and forming a gripping space therebetween for gripping a bolt; a toggle bar installed on the lead end of the second jaw to be allowed to be rotated only to the outward of the gripping space; and a tension adjustment bolt installed in the long hole formed on the bottom of the second jaw and having a lead end connected to the inner side of the toggle bar so as to elastically support the toggle bar to the inward of the gripping space.

Abstract: The present invention relates to a spanner having a toggle bar installed in at least a jaw and allowed to be rotated in one direction for tightening or releasing a bolt (or nut) continually by continuous operation of rotating the spanner's lever in one and converse directions repeatedly in a state of gripping the bolt, also easily operative for tightening or releasing a bolt (or nut), especially, placed in a narrow gap. The spanner is constructed to comprises a lever; a first jaw and a second jaw respectively extending from both sides of the lead end of the lever and forming a gripping space therebetween for gripping a bolt; a toggle bar installed on the lead end of the second jaw to be allowed to be rotated only to outward of the gripping space; a tension adjustment bolt installed in the long hole formed on the bottom of the second jaw and having a lead end connected to the inner side of the toggle bar so as to elastically support the toggle bar to inward of the gripping space.

Abstract: Disclosed is a spanner which is generally used as a typical tool for tightening or releasing a bolt. The spanner is capable of tightening or releasing a bolt continually in one direction by the effect of a toggle bar (400) pivotally mounted on a jaw of two jaws (200, 300) of the spanner head in a state that the toggle bar is urged to pivot toward one direction. A protrusion (30, 32) is formed on a distal end of the other jaw of the spanner head for gripping an angular portion of the bolt head so that it is possible to prevent the spanner head being readily disengaged from the bold head.

Abstract: Disclosed is a spanner which is generally used as a typical tool for tightening or releasing a bolt. The spanner is capable of tightening or releasing a bolt continually in one direction by the effect of a toggle bar (400) pivotally mounted on a jaw of two jaws (200, 300) of the spanner head in a state that the toggle bar is urged to pivot toward one direction. A protrusion (30, 32) is formed on a distal end of the other jaw of the spanner head for gripping an angular portion of the bolt head so that it is possible to prevent the spanner head being readily disengaged from the bold head.