F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
61/4.6
F16L 1/09 (2006.01) F16L 1/036 (2006.01)
Patent
CA 1170062
ABSTRACT OF THE DISCLOSURE The joining of pipes, especially large concrete pipes, has heretofore been a comparatively cumbersome procedure necessitating the use of special tools by means of which a pressure has been exerted on the back end of the pipe to push it towards the last of the previously laid pipes. In order to simplify the laying and joining of the pipes, a pipe which is to be joined to the last laid pipe in the pipe line is placed in alignment in front of the end of the last laid pipe, that an asymmetrical two-legged lifting strap is applied, the shorter leg of which is attached to the pipe, which is to be joined to the last laid pipe in the pipe line, at the end portion which is nearest to the joining end, that the longer leg of the lifting strap is attached to one of the previously laid pipes of the pipe line, and that to the point of connection between the legs there is connected a hoisting device by means of which a slight vertical heave is effected, resulting in the pipe being pulled in the direction towards the last laid pipe.
389677
Bakk Henry
Bakk Thorleif
Firma Deha Baubedarf Gmbh & Co. Kg
Marks & Clerk
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