US3345655A - Releasable metal scaffolding connector - Google Patents

Releasable metal scaffolding connector Download PDF

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Publication number
US3345655A
US3345655A US468367A US46836765A US3345655A US 3345655 A US3345655 A US 3345655A US 468367 A US468367 A US 468367A US 46836765 A US46836765 A US 46836765A US 3345655 A US3345655 A US 3345655A
Authority
US
United States
Prior art keywords
post
sleeve
pin
brace
end portion
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
US468367A
Other languages
English (en)
Inventor
Juculano Theodore Charles
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.)
General Electric Co
Marvel Equipment Corp
Original Assignee
Marvel Equipment Corp
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 Marvel Equipment Corp filed Critical Marvel Equipment Corp
Priority to US468367A priority Critical patent/US3345655A/en
Priority to ES0317334A priority patent/ES317334A1/es
Priority to DE19651559006 priority patent/DE1559006A1/de
Priority to CH1332665A priority patent/CH429114A/de
Application granted granted Critical
Publication of US3345655A publication Critical patent/US3345655A/en
Assigned to GENERAL ELECTRIC CREDIT CORPORATION reassignment GENERAL ELECTRIC CREDIT CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SYMONS CORPORATION
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
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
    • E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
    • E04G7/305—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect without tying means for connecting the bars or members
    • 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
    • Y10T403/30—Laterally related members connected by latch means, e.g., scaffold connectors

Definitions

  • a tubular sleeve encircling and freely slideably mounted on the upright of a dismantleable metal scaffold has a longitudinal slot opening to its lower end to embrace a pin projecting from the side of the upright, and a bifurcated arm fixed to the sleeve above the inner end of the slot and overlying the slotted portion of the sleeve with its end spaced above the bottom of the sleeve, also embraces the pin to hold the apertured end of a brace impaled upon the pin against disassembly therefrom until the sleeve is lifted.
  • This invention relates to readily releasable connectors for fastening two or more structural members together, and refers particularly to connectors for securely but readily releasably attaching the ends of diagonal braces to the posts or uprights of conventional metal scaffolding.
  • metal scaffolding is made up of so-called panels or frames, each of which comprises a pair of tubular posts or uprights connected and held in parallel spaced apart relation by transverse members which are securely welded thereto.
  • the panels or frames are held upright and in uniformly spaced apart alignment by means of pivotally connected diagonal braces detachably anchored to the posts of each panel near their upper and lower ends.
  • Each diagonal brace usually has its end portions flattened and apertured so that it may be impaled upon a pin or stud which projects from the side of the post to which the brace is to be secured.
  • the connectors by which the diagonal braces are secured to the posts of the panels or frames are a critically important element in the scaffolding.
  • the simplest form of connector employed in metal scaffolding consisted simply of a threaded stud projecting from the side of the post or upright to be engageable in a closely fitting hole in the end of the diagonal brace, and a wing nut threaded on the stud to clamp the apertured end portion of the brace against the post.
  • This type of connector although simple and inexpensive, had serious disadvantages, in addition to lacking the desired quickness of assembly.
  • the nut which held the brace to the upright was not an inseparable part of the securement means and could easily become lost. More seriously, though, the repeated engagement of the apertured end of the brace upon the threaded stud deformed the threads on the stud and soon rendered the connector useless.
  • FIGURE 1 is a perspective view of part of an erected 'pped with connectors constructed in accordance with this invention
  • FIGURE 2 is a perspective View on an enlarged scale of one of the connections, illustrating the same in its operative condition securing two diagonal braces to a post or upright of the scaffold;
  • FIGURE 3 is a perspective view similar to FIGURE 2, but illustrating the simplicity of the manner in which the connector of this invention is manipulated during erection and/or dismantling of the scaffold;
  • FIGURE 4 is a cross sectional view through FIGURE 2 on the plane of the line 4-4;
  • FIGURE 5 is a perspective view similar to FIGURE 2, but illustrating a modified embodiment of the invention.
  • FIGURE 6 is a cross sectional view through FIGURE 5 on the plane of the line 66.
  • the numeral 5 designates generally an erected metal scaffold which comprises, in general, a plurality of panels or frames 6 held upright and in spaced apart alignment by pairs of pivotally connected diagonal braces 7.
  • Each panel or frame 5 comprises a pair of tubular posts or uprights 8, held in spaced apart parallel relationship by transverse members 9 that are welded or otherwise rigidly secured thereto.
  • the panels or frames have their transverse members 9 connected, intermediate their ends, by a vertical member 10 which cooperates with one of the uprights 8 to provide a ladder, the rungs of which are the adjacent portions of the transverse members 9 and a shorter intermediate cross bar 11.
  • the panels or frames are all alike and hence comprise modular units which can be built up vertically and connected horizontally.
  • the pivotally joined diagonal braces 7 by which the panels or frames are connected horizontally and by which the panels or frames are held upright and properly spaced, are usually formed of tubular stock, but have flattened and apertured end portions 12 to cooperate with the connectors 13 of this invention, one of which is located near the top and near the bottom of each post or upright.
  • the connector 13 of this invention is especially adapted to, and was specifically devised for metal scaffolding, and hence is described herein with particular reference to such scaffolding, it will be understood that the connector may be used in any device or structure in which an apertured end portion of a strut must be detachably secured to a post.
  • Each connector consists simply ofan unthreaded pin or stud 14 fixed to and projecting from the side of the post or upright 8 and preferably the side thereof which faces inwardly with respect to the panel of which the post or upright constitutes a part.
  • the base of the pin or stud 14 is enlarged, as at 14, to provide a shoulder against which the flattened end portion 12 of a diagonal brace engages when the brace is attached to the post with the pin passing through the hole 15 in the brace.
  • the pin is long enough to not only project through the overlying flattened ends of two braces, but a substantial distance therebeyond.
  • the means by which the apertured ends of the diagonal braces are held on the pin or stud 14 in accordance with this invention comprises a sleeve 16 with an overhanging arm 17.
  • the sleeve is simply a short length of steel tubing slipped onto the post 8 before fabrication of the panel or frame of which the post is a part.
  • the sleeve is freely lengthwise slideable on the post and has a longitudinal slot 18 extending up from its lower end to a point somewhat short of its upper end, to accommodate the pin or stud 14.
  • the sleeve may occupy a position in which the pin or stud is between the upper and lower ends of the sleeve, and when free and unrestrained, the sleeve automatically drops by gravity to this position, which of course is defined by the engagement of the base portion of the pin with the upper closed end of the slot 18, the slot being wide enough to accept the base portion.
  • the arm 17 is a right-angularly shaped member having a short flange 19 which is welded or otherwise suitably secured to the unslotted upper end portion of the sleeve, and an elongated flat bifurcated portion 20 which overlies the slotted portion of the sleeve, with its bifurcation 21 in line with the slot to straddle or embrace the pin when the sleeve is permitted to drop to its aforesaid defined position.
  • the bifurcation 21 be long enough to prevent its upper closed end 22 from contacting the pin 14 before the closed end of the slot seats upon the base of the pin.
  • the space between the flat bifurcated portion 24) of the arm and the adjacent side of the sleeve is sufiicient to snugly, though relatively easily accommodate the over lapped end portions of two diagonal braces when the inner one thereof is seated upon the enlarged base of the pin. Accordingly, when the diagonal braces have been impaled upon or attached to the pinin the manner shown in FIGURE 3 which, of course, requires holding the sleeve in a raised position exposing the pinthe sleeve will drop to its operative position when released. In this operative position of the sleeve the bifurcated arm embraces the outer end portion of the pin and thereby prevents detachment of the braces from the post.
  • each connector 13 is permanently held assembled with the post 8 on which it is mounted, by being confined between the pin or stud 14 with which it coacts and the transverse member 9 immediately above it, it being understood that each post has two connectors thereon, one near its upper end beneath the top transverse member 9 and the other near its lower end beneath the bottom transverse member 9.
  • clamping means 25 may be provided to releasably secure the sleeve in this position, as in the modified form of the invention illustrated in FIG- URES 5 and 6.
  • This clamping device consists of a bridging member 26 extending across the lower end of the slot 13, in which position it is welded to the sleeve while the pin is in the slot.
  • a thumb screw 27 is threaded into a tapped hole in this bridging member to have its inner end bear against the adjacent side of the post when the screw is tightened, and to preclude detachment of the screw its end is upset, as at 28.
  • a connector for readily detachably securing an apertured end portion of a brace to a post comprising:
  • the brace upon movement of the sleeve into a position at which the bifurcated end portion of the arm embraces the pin, the brace is secured to the post, the sleeve having a longitudinally extending slot opening to one end thereof to receive the pin and thereby hold the sleeve against rotation about the post,
  • said slot being in line with the bifurcated end portion of the arm and the sleeve being axially longer than the bifurcated arm and having its slotted end portion projecting a substantial distance beyond the bifurcated end of said arm,
  • the connector of claim 7 further characterized by a bridging member secured to the sleeve across the open end of its slot, and
  • the sleeve may be releasably held against axial movement on the post.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Connection Of Plates (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Adornments (AREA)
US468367A 1965-06-30 1965-06-30 Releasable metal scaffolding connector Expired - Lifetime US3345655A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US468367A US3345655A (en) 1965-06-30 1965-06-30 Releasable metal scaffolding connector
ES0317334A ES317334A1 (es) 1965-06-30 1965-09-10 Perfeccionamientos en las piezas desmontables de conexion para andamiajes metalicos.
DE19651559006 DE1559006A1 (de) 1965-06-30 1965-09-25 Vorrichtung zum leicht loesbaren Verbinden der Staender und Fuellstaebe von Geruesten
CH1332665A CH429114A (de) 1965-06-30 1965-09-27 Vorrichtung zum leicht lösbaren Verbinden der Ständer und Füllstäbe von Gerüsten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US468367A US3345655A (en) 1965-06-30 1965-06-30 Releasable metal scaffolding connector

Publications (1)

Publication Number Publication Date
US3345655A true US3345655A (en) 1967-10-10

Family

ID=23859519

Family Applications (1)

Application Number Title Priority Date Filing Date
US468367A Expired - Lifetime US3345655A (en) 1965-06-30 1965-06-30 Releasable metal scaffolding connector

Country Status (4)

Country Link
US (1) US3345655A (de)
CH (1) CH429114A (de)
DE (1) DE1559006A1 (de)
ES (1) ES317334A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481095A (en) * 1967-02-03 1969-12-02 Nouvelle Des Echafaudages Tubu Tubular scaffolding with locking pegs
US4493394A (en) * 1982-05-24 1985-01-15 Figgie International Inc. Brace lock for scaffolding
US6585083B2 (en) * 2000-02-25 2003-07-01 Roland R. Santarlasci Scaffold construction apparatus and method
US20040128940A1 (en) * 2002-12-19 2004-07-08 Laforge Mark Lightweight truss joint connection
US20050077108A1 (en) * 2003-10-14 2005-04-14 Porfirio Simoes Horizontal support member for tube and clamp scaffold assembly
US20070187179A1 (en) * 2006-02-10 2007-08-16 Porfirio Simoes Scaffold Support Bracket and Assembly
US20230074662A1 (en) * 2021-09-03 2023-03-09 Direct Scaffold Supply, LP Modular Scaffolds, Scaffold Kits and Methods of Use Therefor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2927919B1 (fr) * 2008-02-25 2011-09-30 Centaure Element d'echafaudage et ensemble d'echafaudage comprenant un tel element
EP2314796A1 (de) * 2009-10-22 2011-04-27 Gierre S.r.L. Gerüst

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US884772A (en) * 1907-06-13 1908-04-14 Charles M Sorensen Clamp.
US2813759A (en) * 1956-08-01 1957-11-19 Braun Anton Brace locking device
US2814535A (en) * 1955-11-08 1957-11-26 Zigmund J Jagiel Brace rod securing means for scaffold frames or the like
US2823959A (en) * 1955-12-21 1958-02-18 Charles C Pimm Locking device for scaffold elements
US3027181A (en) * 1960-07-08 1962-03-27 Archie L Tardif Collar type lock device for structural members of staging
US3028928A (en) * 1959-11-16 1962-04-10 Marvel Equipment Corp Metal scaffold extension

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US884772A (en) * 1907-06-13 1908-04-14 Charles M Sorensen Clamp.
US2814535A (en) * 1955-11-08 1957-11-26 Zigmund J Jagiel Brace rod securing means for scaffold frames or the like
US2823959A (en) * 1955-12-21 1958-02-18 Charles C Pimm Locking device for scaffold elements
US2813759A (en) * 1956-08-01 1957-11-19 Braun Anton Brace locking device
US3028928A (en) * 1959-11-16 1962-04-10 Marvel Equipment Corp Metal scaffold extension
US3027181A (en) * 1960-07-08 1962-03-27 Archie L Tardif Collar type lock device for structural members of staging

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481095A (en) * 1967-02-03 1969-12-02 Nouvelle Des Echafaudages Tubu Tubular scaffolding with locking pegs
US4493394A (en) * 1982-05-24 1985-01-15 Figgie International Inc. Brace lock for scaffolding
US6585083B2 (en) * 2000-02-25 2003-07-01 Roland R. Santarlasci Scaffold construction apparatus and method
US20040128940A1 (en) * 2002-12-19 2004-07-08 Laforge Mark Lightweight truss joint connection
US20050077108A1 (en) * 2003-10-14 2005-04-14 Porfirio Simoes Horizontal support member for tube and clamp scaffold assembly
US20070187179A1 (en) * 2006-02-10 2007-08-16 Porfirio Simoes Scaffold Support Bracket and Assembly
US20230074662A1 (en) * 2021-09-03 2023-03-09 Direct Scaffold Supply, LP Modular Scaffolds, Scaffold Kits and Methods of Use Therefor

Also Published As

Publication number Publication date
DE1559006A1 (de) 1969-08-21
ES317334A1 (es) 1966-04-01
CH429114A (de) 1967-01-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: GENERAL ELECTRIC CREDIT CORPORATION, CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SYMONS CORPORATION;REEL/FRAME:004266/0238

Effective date: 19840413

Owner name: GENERAL ELECTRIC CREDIT CORPORATION,CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SYMONS CORPORATION;REEL/FRAME:004266/0238

Effective date: 19840413