Abstract Tongs for lifting heavy members such as structural steel, wheels, pipes and the like. The tongs are provided with a pair of opposed arms which are pivoted at one end about a shaft member. The opposite ends of the arms provide a gripping means for lifting members. The shaft member is provided with a bail member which may be secured to a crane or similar device to lift the tongs. A threaded member is also pivotally mounted on the shaft between the arms and carries a locking member which is movable on the threaded member and has sides which engage the exterior of the arms to lock them in lifting engagement with an object to be lifted. A nut is provided on the threaded member and may be threaded into contact with the locking member to hold it in a locked position.
Locking tongs comprising; a pair of opposed arms pivotally mounted at one end to a pivot member, the other end of said arms providing gripping means; a bail means pivotally mounted to said pivot member and providing means for applying a lifting force to the tongs; a locking means pivotally mounted to said pivot member and having portions engaging the exterior of said arms, said locking means being movable to engage said exterior of said arms to securely hold said arms in any desired gripping position.
Claim 2
Dependent Claim
86 words
Locking tongs comprising; a pair of opposed arms pivotally mounted at one end to a pivot member, the other end of said arms providing gripping means; a bail means pivotally mounted to said pivot member and providing means for applying a lifting force to the tongs; a locking means pivotally mounted to said pivot member and having portions engaging the exterior of said arms, said locking means being movable to engage said exterior of said arms to securely hold said arms in any desired gripping position.
Claim 3
Dependent Claim
45 words
Locking tongs as set forth in claim 1 in which said locking means includes a threaded member pivoted to said pivot member, a locking member slidable on said threaded member, and a nut threaded on said threaded member for engaging and locking said locking member.
Claim 4
Dependent Claim
28 words
Locking tongs as set forth in claim 1 in which said pivot member is a shaft extending through said bail and said one end of said opposed arms.
Claim 5
Dependent Claim
26 words
Locking tongs as set forth in claim 1 in which said gripping means are soft metal members secured to said other end of said opposed arms.
Claim 6
Dependent Claim
39 words
Locking tongs as set forth in claim 1 in which said opposed arms are substantially C-shaped and said locking means includes a locking member having a pair of angularly extending legs, said legs engaging the exterior of said arms.