An improved system and method for clamping of carpenter levels is disclosed. Within the system, it is not necessary to re-size and re-adjust the clamps over and over again as they are re-located. As such, time-consuming repetitive steps are reduced. Additionally, the system can be applied to a variety of clamping surfaces, and can be swiveled to fit at unusual angles.

An improved system and method for clamping of carpenter levels is disclosed. Within the system, it is not necessary to re-size and re-adjust the clamps over and over again as they are re-located. As such, time-consuming repetitive steps are reduced. Additionally, the system can be applied to a variety of clamping surfaces, and can be swiveled to fit at unusual angles.

A manual clamp, comprising: a sliding rod; a fixed clamp body fixed at one end of the sliding rod; a movable clamp body sliding on the sliding rod; a movable clamp head sliding on the movable clamp body; a handle rotationally connected to the movable clamp body; a cam portion provided at one end, close to the movable clamp head, of the handle, wherein when the handle is operated, the cam portion comes into contact with the movable clamp head and drives the movable clamp head to move toward the fixed clamp body to realize clamping, or the cam portion disengages from the movable clamp head to realize loosening; and a locking device configured to lock a position of the handle or unlock the handle by releasing the locking device. The manual clamp may realize clamping by pulling the handle once when clamping an object, thereby improving the efficiency.

A clamp assembly for connecting a rudder to an aquatic device having a body with a first end, a second end, a top and a bottom. A clamp having a screw connected to a pivot pin disposed within a clamp head is removably connected to the top of the body for selectively applying a clamping force on the body. The clamp handle in some bodies tapering to an end to allow placement within a retaining slot of a fin box.

The current invention relates to jig apparatus which is provided of a form to allow accurate positioning and repositioning of the same with respect to workpiece and the use of the jig apparatus to provide a guide for the provision of a drill bit through at least one guide passages therein to form a hole in the workpiece at a required location. In one embodiment the jig apparatus is provided in a form so as to provide a plurality of passages, each of which can be used as a guide for a drill bit to thereby allow a plurality of spaced apart drill holes to be formed in the workpiece without the need to move the jig apparatus with respect to the workpiece. In one embodiment guide means are provided which are selectively positionable by the user in order to allow the position of the jig apparatus with respect to the workpiece to be accurately defined and retained by the user.

The invention provides a clamping system that includes a vise and a cooperating level holder to facilitate a wide range of options for positioning a level with respect to a structural member.

A pitch bar self-adjusting clamp including a fixture having a handle and an opposing stationary jaw, a co-acting jaw pivoted to the fixture, a lever pivoted to the co-acting jaw, a guide bar pivotally coupled to the handle proximate the stationary jaw and movably coupled to the handle, and a toggle assembly coupled between the lever and the guide bar. The toggle assembly includes a locking element, a link pivoted to the lever, and a cam pivoted to the link and to the locking element. The cam is movable between a first condition permitting the locking element to reciprocate along the guide bar and a second condition bearing against the guide bar and canting the locking element into frictional engagement against the guide. An adjustment mechanism is coupled to the proximal end of the guide bar for movement between a low pitch position and a high pitch position.