US3516695A - Scaffold couplings - Google Patents

Scaffold couplings Download PDF

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Publication number
US3516695A
US3516695A US710098A US3516695DA US3516695A US 3516695 A US3516695 A US 3516695A US 710098 A US710098 A US 710098A US 3516695D A US3516695D A US 3516695DA US 3516695 A US3516695 A US 3516695A
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US
United States
Prior art keywords
tube
vertical
coupling
scaffold
jaw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US710098A
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English (en)
Inventor
Jack Graham Lowe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Burton Delingpole and Co Ltd
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 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 US3516695A publication Critical patent/US3516695A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/12—Clamps or clips for crossing members
    • E04G7/14—Clamps or clips for crossing members for clamping the members independently
    • 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 [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7105—Connected by double clamp
    • 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 [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7129—Laterally spaced rods
    • Y10T403/7141—Plural channels in connector
    • 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 [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7194—Crossed rods

Definitions

  • This invention relates to scaffold couplings for securing a non-vertical, e.g. horizontal scaffold tube to a vertical or substantially vertical supporting tube, e.g. an upright tube of a scaffolding structure, which coupling is of the kind, herein called the kind specified, comprising a central body having two oppositely directed concavedly curved seatings and a pair of curved clamping jaws, each connected at opposite ends to the central body, each jaw coacting with one of the two seatings in clamping one of the two tubes to be connected.
  • One of the most common arrangements in couplings of the kind specified is that in which the two seatings are mutually perpendicular so as to secure the two tubes at right angles to one another and in such an arrangement the central body is formed as a one piece member, for example as a forging.
  • the maximum permissible loading of a coupler having a one piece body for supporting a horizontal tube is at present about 650 kilos.
  • the present invention has for its object the provision of an improved form of scaffold coupling of the kind specified, in which a substantially greater load can be supported through a given size of coupling from the vertical or substantially vertical tube, without risk of the coupling slipping down the tube.
  • the central body adjacent at least one of the two seatings namely that which in situ is in clamping engagement with the vertical or substantially vertical tube, is formed at the in situ lower side of the vertical tube engaging seating with a sharp downward-ly presented edge which in situ is disposed below the lower edge of the jaw clamping said vertical tube, said edge being in or intersecting with a plane containing the axis of the vertical tube, which plane also passes 3,516,695 Patented June 23, 1970 Mice through the medial part of the central body, the arrangement being such that with increase in the loading of the horizontal or other supported tube the coupling rocks very slightly relative to the vertical tube in a direction such that the sharp edge can deform slightly the surface metal of the vertical tube to engage positively therewith, and thus provide a positive engagement in addition to a frictional engagement with the vertical tube.
  • the sharp edge is constituted by a sharp corner of concave conguration, which engages along its length with the adjacent side of the vertical tube, and extends in a direction perpendicular to the length of the tube.
  • the sharp edge is constituted by a part of the adjacent seating, so as to form a local extension of the seating.
  • the sharp edge is constituted by an adjacent portion of a clamping jaw securing lug.
  • the invention may be applied to the particular form of scaiold coupling which is the subject of our prior patent application No. 688,602, tiled Dec. ⁇ 6, 1967.
  • FIG. 1 is a side elevation of one form of scaffold coupling embodying the invention, one of the jaws being depicted in the closed position and the other in the open position.
  • FIG. 2 is a plan view of the central body of the coupling depicted in FIG. 1.
  • FIG. 3 is a cross sectional view of the coupler depicted in FIG. 1, shown in its nal clamping position.
  • the coupling scaffold there illustrated is adapted to secure a horizontal tube 7 to a vertical scaffold tube 8, and comprises a central body 9 of generally circular configuration peripherally, and embodying on each of its two sides two mutually perpendicular concave circular seatings 10, 11.
  • the circular periphery of the body has integrally formed therewith, two pairs of lugs 12, 13, 14, 15, one of the two lugs 12, 14 in each pair being of generally rectangular form in cross section, with the other lugs 13, 15 ⁇ of each pair being formed on one side with a shallow part-circular bearing recess 16, which provides a bearing for the circular section head 17 of a T-shape clamping bolt 18, which '.head 17 has a diameter more than twice the depth of the recess 16, so that only a minor portion of the bolt head is received within the recess and the associated lug 13, 15 is made of depth suicient merely to provide this recess 16 of the above shallow depth.
  • Each recessed lug 13, 15 is formed with an elongated hole 19 through which the clamping bolt 17 passes, the free end portion of the clamping bolt carrying a nut 20 for engaging with the free end portion 21 of arcuate shaped jaw 22, 23, the other end 24 of which is hinged lln/ iin 25, one to each of the rectangular section lugs
  • the said hinged end 24 of each jaw 22, 23, is forked so that the two arms 26 of the fork extend on opposite sides of the lug 12, 14, and the free end 27 of each lug 12, 14 is adapted as shown in FIG. l to engage with the metal of the jaw at position 28 between the inner ends of the two arms 26 to limit the opening movement of each jaw.
  • the central body 9 is formed integrally during the forging operation with two pairs of lug reinforcing portions 12a, 13a, 14a, 15a, each extending from the central body in the direction of and adjacent to the two pairs of lugs 12, 13, 14, 15, respectively.
  • Each pair of reinforcing portions 12a, 13a, adjacent to the one pair of lugs 12, 13, constitute tulbe engaging extensions of seating 10, which coacts with the jaw 22 secured by means of the other pair of lugs 14, 15, while reinforcing portions 14a, 15a, adjacent to the pair of lugs 14, 15, constitute tube engaging extensions of seating 11, which coacts with the jaw 23 secured by means of the pair of lugs 12, 13.
  • One of the reinforcing portions in each pair namely 12a, 14a, which are adjacent each jaw hinging lug 12, 14, are formed at the side of the adjacent seating 10, 11, respectively with an outer sharp edge or comer 12b, 1417, of sharp right angle conugration in cross section, and of substantially straight configuration as viewed in FIG. 2, but curved about the axis of ourvature of the adjacent seating, so as to engage with the vertical scaffold tube 8 engaged by such seating.
  • the coupler in utilising the coupler to secure a horizontal tube 7 to an upright tube 8, the coupler would in accordance with normal practice be clamped first to the upright tube 8 by engaging seating 10 and corresponding jaw 22 in clamping engagement with the upright tube with the coupler in a position in which the other jaw 23 for securing the horizontal tube 7 is, as is customary, in a position for supporting the horizontal tube in a position ready for clamping.
  • the said edge 12b of reinforcing portion 12 in engagement with ⁇ upright turbe 8 is directed downwardly of the tube.
  • a scaffold coupling for securing a horizontal cy.- lindrical tube to a vertical supporting cylindrical tube
  • a scaffold coupling according to claim 1 characterised in that the sharp edge is constituted by a right angle corner of concave configuration, one face of which engages with the adjacent side of the vertical tube, and the other face of which extends in a direction perpendicular to the length of the tube.
  • a scaffold coupling according to claim 1 characterised in that the sharp edge is constituted by an adjacent portion of a clamping jaw securing lug.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
US710098A 1967-03-04 1968-03-04 Scaffold couplings Expired - Lifetime US3516695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB00339/67A GB1217495A (en) 1967-03-04 1967-03-04 Improvements in or relating to scaffold couplings

Publications (1)

Publication Number Publication Date
US3516695A true US3516695A (en) 1970-06-23

Family

ID=9966043

Family Applications (1)

Application Number Title Priority Date Filing Date
US710098A Expired - Lifetime US3516695A (en) 1967-03-04 1968-03-04 Scaffold couplings

Country Status (6)

Country Link
US (1) US3516695A (is")
BE (1) BE711642A (is")
ES (1) ES146946Y (is")
FR (1) FR1568958A (is")
GB (1) GB1217495A (is")
SE (1) SE330767B (is")

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754711A (en) * 1984-12-17 1988-07-05 Allen Solomon Adaptable frame
US6412741B1 (en) * 2001-02-09 2002-07-02 Dennis Olivero Beverage holding device with railing attachment
CN106284969A (zh) * 2016-09-18 2017-01-04 广西钦州展兴建设工程有限公司 一种建筑扣件

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988006222A1 (en) * 1987-02-17 1988-08-25 Donald Scott Robinson Improved couplers
GB2240358B (en) * 1990-01-29 1993-12-15 Lawtex Plc Clamping device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US788786A (en) * 1904-05-31 1905-05-02 Frank Meyer Bracket for building construction.
FR1071335A (fr) * 1953-02-19 1954-08-30 Perfectionnements aux dispositifs de liaison pour tubes
GB804038A (en) * 1953-11-11 1958-11-05 Boulton Tubular Structures Ltd Improvements in, or relating to, scaffold couplings
US2876027A (en) * 1957-02-26 1959-03-03 William B Sulmonetti Locking swivel type clamp assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US788786A (en) * 1904-05-31 1905-05-02 Frank Meyer Bracket for building construction.
FR1071335A (fr) * 1953-02-19 1954-08-30 Perfectionnements aux dispositifs de liaison pour tubes
GB804038A (en) * 1953-11-11 1958-11-05 Boulton Tubular Structures Ltd Improvements in, or relating to, scaffold couplings
US2876027A (en) * 1957-02-26 1959-03-03 William B Sulmonetti Locking swivel type clamp assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754711A (en) * 1984-12-17 1988-07-05 Allen Solomon Adaptable frame
US6412741B1 (en) * 2001-02-09 2002-07-02 Dennis Olivero Beverage holding device with railing attachment
CN106284969A (zh) * 2016-09-18 2017-01-04 广西钦州展兴建设工程有限公司 一种建筑扣件

Also Published As

Publication number Publication date
FR1568958A (is") 1969-05-30
BE711642A (is") 1968-07-15
SE330767B (is") 1970-11-30
ES146946U (es) 1969-07-01
ES146946Y (es) 1970-03-01
GB1217495A (en) 1970-12-31

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