![]() each jaw hinging lug adjacent its junction with the central body having its cross section increased and thus strengthened against bending by a mass of metal substantially equal to that saved by the said chamfering, so as to maintain substantially the same mass of metal in each of-the four lugs of the body.each jaw hinging lug is chamfered at a position and to an extent such as to allow the associated jawto swing outwardly away.kind specified, which comprises a central body formed as a metal drop forging having on each of two opposite sides thereof a tube receiving seating, the seatings being so relatively disposed that the two tubes are connected together in mutually perpendicular relationship, the body at each of two opposite sides thereof adjacent each seating being provided with a pair of binge lugs formed integrally with the central body during the drop forging operation.so that each of the four lugs embody substantially the same mass of metal, one of the two lugs of each pair having hinged thereto one end of one of two tube securing jaws each formed to provide a tube receiving recess, and the other of the two lugs of each pair having hinged thereto a clamping bolt arranged for detachable clamping engagement with the other and free end of one This invention relates to couplers for connecting two round scaffold tubes together and of the kind, herein called the.ABSTRACT A coupler for connecting a pair of round scaffold tubes, embodying hinged tube clamping jaws having limited opening movement but exceeding 90 such as to allow lateral initial positioning of the scaffold tube passed the clamping bolt. ![]() Y10T403/7105- Connected by double clamp.Y10T- TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION.Y10- TECHNICAL SUBJECTS COVERED BY FORMER USPC.Y- GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS AND DIGESTS.E04G7/14- Clamps or clips for crossing members for clamping the members independently.E04G7/12- Clamps or clips for crossing members.E04G7/06- Stiff scaffolding clamps for connecting scaffold members of common shape.E04G7/02- Connections between parts of the scaffold with separate coupling elements.E04G7/00- Connections between parts of the scaffold.E04G- SCAFFOLDING FORMS SHUTTERING BUILDING IMPLEMENTS OR AIDS, OR THEIR USE HANDLING BUILDING MATERIALS ON THE SITE REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Burton Delingpole and Co Ltd filed Critical Burton Delingpole and Co Ltd Application granted granted Critical Publication of US3810704A publication Critical patent/US3810704A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Burton Delingpole and Co Ltd Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US00276011A Inventor J Lowe Current Assignee (The listed assignees may be inaccurate. Google Patents US3810704A - Scaffold tube couplerÄownload PDF Info Publication number US3810704A US3810704A US00276011A US27601172A US3810704A US 3810704 A US3810704 A US 3810704A US 00276011 A US00276011 A US 00276011A US 27601172 A US27601172 A US 27601172A US 3810704 A US3810704 A US 3810704A Authority US United States Prior art keywords jaw lugs tube free end bolt Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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