Pipe centering jig

Claim 2

A clamping device for positioning two adjacent pipe sections, having adjacent ends to be joined, in desired mutual alignment, including, in combination: a pair of mutually spaced, flexible, elongate, link chains constructed for respective disposition about respective ones of said pipe sections, each of said chains having plural, mutually-spaced inter-link linking structures, first means for securing said chains about said pipe sections, said first means including a pair of parallel, laterally interconnected hook means dimensioned to releasably engage simultaneously, selected corresponding linking structures of said chains, and second means secured to and between said chains for spanning across the adjacent ends of said pipe sections.

Claim 3

The combination of claim 1 wherein said first means includes overtoggling structural means connected to said hook means and secured to one region of said pair of chains, for releasably engaging via said hook means a second region of said pair of chains, to thereby secure said chaiNs about said pipe sections.

Claim 4

The combination of claim 1 wherein said first means includes: an overtoggling handle having a threaded shaft portion, third structural means for journallingly securing said handle to said pair of chains, threaded means rotatably secured to said shaft portion, and fourth means comprising said pair of hook means and engagable thereby with said chains and pivotally secured to said threaded means for securing said chains about said pipe sections.

Claim 5

The combination of claim 3 wherein said fourth means comprise a pair of securement members, as said hook means, having hook-configured end portions releasably secured to selected portions of said chains.

Claim 6

The combination of claim 1 wherein said second means comprise plural, mutually spaced plates connected to and transversely disposed across corresponding links of said chains.

Claim 7

A clamping device for positioning two adjacent pipe sections, having adjacent ends to be joined, in desired mutual alignment, including, in combination: a pair of mutually spaced, flexible, elongate, link chains constructed for respective disposition about respective ones of said pipe sections, first means for securing said chains about said pipe sections, and second means secured to and between said chains for spanning across the adjacent ends of said pipe sections, wherein said second means comprises plural, mutually spaced plates connected to and transversely disposed across said chains, and wherein said plates each include a central, threaded aperture, said combination including plural threaded elongate means respectively threaded through said central aperture and constructed for spacing said pipe sections apart a desired distance.

Claim 8

A clamping device for positioning two adjacent pipe sections, having adjacent ends to be joined, in desired mutual alignment, including, in combination: a pair of mutually spaced, flexible, elongate, link chains constructed for respective disposition about respective ones of said pipe sections, first means for securing said chains about said pipe sections, and second means secured to and between said chains for spanning across the adjacent ends of said pipe sections, wherein said second means comprises plural, mutually spaced plates connected to and transversely disposed across said chains, and wherein said plates each include a central, threaded aperture, said combination including plural threaded elongate means respectively threaded through said central aperture and constructed for spacing said pipe sections apart a desired distance.

Claim 9

The combination of claim 6 wherein each of said threaded elongate means includes a tapered end for adjustably spacing apart said pipe sections.

Claim 10

A clamping device for positioning two adjacent pipe sections, having adjacent ends to be joined, in desired mutual alignment, including, in combination: a pair of mutually spaced, flexible, elongate, link chains constructed for respective disposition about respective ones of said pipe sections, first means for securing said chains about said pipe sections, and second means secured to and between said chains for spanning across the adjacent ends of said pipe sections, wherein said second means comprise plural, mutually spaced plates connected to and transversely disposed across said chains, wherein said each of plates include side threaded apertures, and threaded elongate means threaded into said side threaded apertures for adjustably engaging said pipe sections, to thereby concentrically align said pipe sections as to their respective ends, and wherein said plates also include respective, central apertures, the combination including additional threaded elongate means respectively threaded through said central apertures for spacing said pipe sections apart a chosen distance.

Claim 11

A clamping device for positioning two adjacent pipe sections, having adjacent ends to be joined, in desired mutual alignment, including, in combination: a pair of mutually spaced, flexible, elongate, link chains constructed for respective disposition about respective ones of said pipe sections, first means for securing said chains about said pipe sections, and second means secured to and between said chains for spanning across the adjacent ends of said pipe sections, wherein said second means comprise plural, mutually spaced plates connected to and transversely disposed across said chains, wherein said each of plates include side threaded apertures, and threaded elongate means threaded into said side threaded apertures for adjustably engaging said pipe sections, to thereby concentrically align said pipe sections as to their respective ends, and wherein said plates also include respective, central apertures, the combination including additional threaded elongate means respectively threaded through said central apertures for spacing said pipe sections apart a chosen distance.

Claim 12

A clamping device for positioning two adjacent pipe sections for mutual securement at adjacent ends and including, in combination, a pair of first means for clampingly encompassing respective ones of said pipe sections about a major portion of their respective peripheries, second means spanning over the adjacent ends of said pipe sections and affixed to and across said first means, and adjustment means engaging said second means for spacing said pipe section ends a predetermined distance apart, said adjustment means comprising adjustment screw means threaded through said second means and having interior tapered end means for simultaneously engaging and thereby selectively mutually spacing said adjacent ends a desired distance apart.

Claim 13

A clamping device for positioning two adjacent pipe sections for mutual securement at adjacent ends and including, in combination, a pair of first means for clampingly encompassing respective ones of said pipe sections about a major portion of their respective peripheries, second means spanning over the adjacent ends of said pipe sections and affixed to and across said first means, and adjustment means engaging said second means for spacing said pipe section ends a predetermined distance apart, said adjustment means comprising adjustment screw means threaded through said second means and having interior tapered end means for simultaneously engaging and thereby selectively mutually spacing said adjacent ends a desired distance apart.

Claim 14

The combination of claim 9 wherein said second means includes means, disposed on opposite sides of said adjustment means, for coaxially aligning said adjacent ends of said pipe sections.