Adjustable joist gripper
A carpentry tool for the installation of parallel boards includes an elongated lever having a rotatable cam pivotally affixed adjacent to a distal end of the lever, a gripper body pivotally affixed at a distal end of the lever, the gripper body having two lugs or brackets extending downward from the lower end of the gripper body, wherein the gripper body includes a two-piece telescopic section having an outer tubing member and an inner tubing member in slidable engagement, the inner tubing member including a first lug or bracket on a lower face thereof, the outer tubing member including a second lug or bracket on a lower face thereof, opposing the first bracket, and a spindle extending from an upper face thereof, and a mechanism for reversibly affixing the sliding inner and outer tubing members at predetermined points. Further disclosed are novel adjustable joist grippers for use with the apparatus.
1 . An adjustable joist gripper, comprising:
a two-piece telescopic section having an outer tubing member and an inner tubing member in slidable engagement;
said inner tubing member comprising a first lug or bracket on a lower face thereof;
said outer tubing member comprising a second lug or bracket on a lower face thereof, opposing said first bracket; and
means for reversibly affixing said sliding inner and outer tubing members at predetermined points.
2 . The adjustable joist gripper of claim 1 , wherein said outer tubing member further comprises a spindle extending from an upper face thereof.
3 . The adjustable joist gripper of claim 1 , wherein said outer tubing member further comprises a tubular member extending from a face thereof.
4 . The adjustable joist gripper of claim 1 , wherein one or more of said lugs or brackets comprises a wide surface running substantially parallel to a joist or other structure gripped.
5 . The adjustable joist gripper of claim 1 , wherein one or more of said lugs or brackets comprises a cutout or void near an upper portion of said lug.
6 . The adjustable joist gripper of claim 1 , wherein one or more of said lugs or brackets comprises an angle bracket.
7 . The adjustable joist gripper of claim 1 , wherein one or more of said lugs or brackets comprises a round or similar leg extending axially down, and a flat plate is rigidly fixed to the bottom end of this leg.
8 . The adjustable joist gripper of claim 1 , wherein one of said lugs or brackets is shorter than the other.
9 . A carpentry tool for the installation of parallel boards, comprising:
an elongated lever having a rotatable cam pivotally affixed adjacent to a distal end of the lever;
a gripper body pivotally affixed at a distal end of the lever, said gripper body having two lugs or brackets extending downward from the lower end of the gripper body;
wherein said gripper body comprises a two-piece telescopic section having an outer tubing member and an inner tubing member in slidable engagement;
said inner tubing member comprising a first lug or bracket on a lower face thereof;
said outer tubing member comprising a second lug or bracket on a lower face thereof, opposing said first bracket, and a spindle extending from an upper face thereof; and
means for reversibly affixing said sliding inner and outer tubing members at predetermined points.
10 . The adjustable joist gripper of claim 9 , wherein said outer tubing member further comprises a tubular member extending from a face thereof.
11 . The adjustable joist gripper of claim 9 , wherein one or more of said lugs or brackets comprises a wide surface running substantially parallel to a joist or other structure gripped.
12 . The adjustable joist gripper of claim 9 , wherein one or more of said lugs or brackets comprises a cutout or void near an upper portion of said lug.
13 . The adjustable joist gripper of claim 9 , wherein one or more of said lugs or brackets comprises an angle bracket.
14 . The adjustable joist gripper of claim 9 , wherein one or more of said lugs or brackets comprises a round or similar leg extending axially down, and a flat plate is rigidly fixed to the bottom end of this leg.
15 . The adjustable joist gripper of claim 9 , wherein one of said lugs or brackets adjustable leg shorter than the other.