US2935346A - Device to lock braces of sectional scaffolding - Google Patents

Device to lock braces of sectional scaffolding Download PDF

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Publication number
US2935346A
US2935346A US712435A US71243558A US2935346A US 2935346 A US2935346 A US 2935346A US 712435 A US712435 A US 712435A US 71243558 A US71243558 A US 71243558A US 2935346 A US2935346 A US 2935346A
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United States
Prior art keywords
slot
braces
sectional
locking
main body
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Expired - Lifetime
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US712435A
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Jr Daniel F Marr
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/04—Clamping or clipping connections
    • F16B7/044—Clamping or clipping connections for rods or tubes being in angled relationship
    • F16B7/048—Clamping or clipping connections for rods or tubes being in angled relationship for rods or for tubes without using the innerside thereof
    • F16B7/0493—Clamping or clipping connections for rods or tubes being in angled relationship for rods or for tubes without using the innerside thereof forming a crossed-over connection
    • 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
    • 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
    • Y10T403/46—Rod end to transverse side of member
    • 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
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y10T403/7051—Wedging or camming
    • Y10T403/7052—Engaged by axial movement

Definitions

  • This invention relates to a device to lock braces used on an upright member of a sectional scaffold.
  • One object of my invention is to provide such a locking device that is formed in one piece of only two main members.
  • Another object is to provide such a locking device that directly contacts a scaffold upright, yet will smoothly slide by gravity into locking position to thereby retain braces, for instance, in predetermined position, on a scaffold.
  • a further object is to provide such a locking device that is compact, simple to attach to, and detach from, a scafiold, and relatively inexpensive to manufacture.
  • Fig. 1 is a side elevational view of my locking device attached to an upright member of a scaffold, and in unlocked position.
  • Fig. 2 is a front elevational view thereof.
  • Fig. 3 is a side elevational view similar to Fig. 1; but showing my device in locked position, the scaffold upright being shown broken away.
  • Fig. 4 is an enlarged, sectional view taken on the line 44 of Fig. 3.
  • my locking device has a sliding member 14 in the main body 16 of which is an elongate, closed slot 18.
  • a sliding member 14 in the main body 16 of which is an elongate, closed slot 18.
  • the laterally inward elongate edges of said legs are beveled as at 19a and 20:: respectively.
  • the inner, elonnited States Patent gate edges of said body, that define said slot 18, are also beveled as at 18a.
  • a locking member 24 is integral with, and extends from, said main body 16, and it has a connecting portion 26 extending above said body in position of use, from which extends a bridge portion 28 which is also above said body.
  • a forked portion 30 extends downwardly from said bridge portion and it has an elongate slot 32 therein, open at the bottom, and which is directly opposite a portion of said slot 18, preferably extending slightly higher than the latter, when my device is in position of use. Said forked portion 30, at said slot 32, is spaced outwardly from said body a substantially uniform distance.
  • My device is attached to the tubular upright 34 of a sectional scaflold, which upright has a threaded stud 36 welded thereto that tapers in thickness outwardly and which extends horizontally through said elongate slots 18 and 32.
  • a screw-threaded nut 38 makes screwthreaded connection on said stud 36 outside said sliding member 14 and inwardly of said locking member 24, thus movably locking my device on said upright.
  • braces When a brace, or braces B, are being placed on said stud 36, my device is kept in unlocked position shown in said Fig. 1. Thereupon, said device is released and it drops by gravity until said body 16 at the upper end of said slot 18 reaches said stud 36, where it is supported, thus locking said braces in position.
  • Said beveled edges 19a and 2011 contact said scaffold upright 34 so that said main body 16 slides freely on the latter. Also said beveled edges 18a defining the sides of said slot 18, contact said stud, hence they slide freely on the latter.
  • a locking device for a scafiold comprising in position of use, a main body, two legs at opposite sides of said body, and extending inwardly thereof, said body having a closed slot, the inner edges of said body that define said slot being beveled, and the laterally inward edges of said legs being beveled, and a locking member integral with said main body embodying a connecting portion extending from, and upwardly beyond, said main body, a bridge portion extending laterally from and beyond said connecting portion, and above said main body, and a forked portion extending downwardly, in position of use, from said bridge portion and having an open slot therethrough directly opposite, extending higher than, and in front of, said main body slot, all of said forked portion, at its said slot, being spaced outwardly from said body, a uniform distance.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Description

May 3, 1960 D. F. MARR, JR 2,935,346
DEVICE T0 LOCK BRACES OF SECTIONAL SCAFFOLDING Filed Jan. 31, 1958 DEVICE TO LOCK BRACES OF SECTIONAL SCAFFOLDING Daniel F. Marr, Jr., Milton, Mass.
Application January 31, 1958, Serial No. 712,435
1 Claim. (Cl. 28753.5)
This invention relates to a device to lock braces used on an upright member of a sectional scaffold.
One object of my invention is to provide such a locking device that is formed in one piece of only two main members.
Another object is to provide such a locking device that directly contacts a scaffold upright, yet will smoothly slide by gravity into locking position to thereby retain braces, for instance, in predetermined position, on a scaffold.
A further object is to provide such a locking device that is compact, simple to attach to, and detach from, a scafiold, and relatively inexpensive to manufacture.
The foregoing and other objects, which will appear as the nature of the invention is better understood, may be accomplished by a construction, combination and arrangement, such as is disclosed by the drawing. The nature of the invention is such as to render it susceptible to various changes and modifications, and, therefore, I am not to be limited to the construction disclosed by the drawing nor to the particular parts described in the specification; but am entitled to all such changes therefrom as fall within the scope of my claim.
In the drawing:
Fig. 1 is a side elevational view of my locking device attached to an upright member of a scaffold, and in unlocked position.
Fig. 2 is a front elevational view thereof.
Fig. 3 is a side elevational view similar to Fig. 1; but showing my device in locked position, the scaffold upright being shown broken away.
Fig. 4 is an enlarged, sectional view taken on the line 44 of Fig. 3.
As illustrated, my locking device has a sliding member 14 in the main body 16 of which is an elongate, closed slot 18. There are two sliding legs 19 and 20 extending away from said body at opposite sides of, which extend upwardly beyond and below said slot, in position of use. The laterally inward elongate edges of said legs are beveled as at 19a and 20:: respectively. The inner, elonnited States Patent gate edges of said body, that define said slot 18, are also beveled as at 18a.
A locking member 24 is integral with, and extends from, said main body 16, and it has a connecting portion 26 extending above said body in position of use, from which extends a bridge portion 28 which is also above said body. A forked portion 30 extends downwardly from said bridge portion and it has an elongate slot 32 therein, open at the bottom, and which is directly opposite a portion of said slot 18, preferably extending slightly higher than the latter, when my device is in position of use. Said forked portion 30, at said slot 32, is spaced outwardly from said body a substantially uniform distance.
My device is attached to the tubular upright 34 of a sectional scaflold, which upright has a threaded stud 36 welded thereto that tapers in thickness outwardly and which extends horizontally through said elongate slots 18 and 32. A screw-threaded nut 38 makes screwthreaded connection on said stud 36 outside said sliding member 14 and inwardly of said locking member 24, thus movably locking my device on said upright.
When a brace, or braces B, are being placed on said stud 36, my device is kept in unlocked position shown in said Fig. 1. Thereupon, said device is released and it drops by gravity until said body 16 at the upper end of said slot 18 reaches said stud 36, where it is supported, thus locking said braces in position.
Said beveled edges 19a and 2011 contact said scaffold upright 34 so that said main body 16 slides freely on the latter. Also said beveled edges 18a defining the sides of said slot 18, contact said stud, hence they slide freely on the latter.
What I claim is:
A locking device for a scafiold comprising in position of use, a main body, two legs at opposite sides of said body, and extending inwardly thereof, said body having a closed slot, the inner edges of said body that define said slot being beveled, and the laterally inward edges of said legs being beveled, and a locking member integral with said main body embodying a connecting portion extending from, and upwardly beyond, said main body, a bridge portion extending laterally from and beyond said connecting portion, and above said main body, and a forked portion extending downwardly, in position of use, from said bridge portion and having an open slot therethrough directly opposite, extending higher than, and in front of, said main body slot, all of said forked portion, at its said slot, being spaced outwardly from said body, a uniform distance.
References Cited in the file of this patent UNITED STATES PATENTS 2,716,576 Nordone Aug. 30, 1955
US712435A 1958-01-31 1958-01-31 Device to lock braces of sectional scaffolding Expired - Lifetime US2935346A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017208A (en) * 1959-05-29 1962-01-16 Bil Jax Inc Brace lock for modular scaffolding
US3027181A (en) * 1960-07-08 1962-03-27 Archie L Tardif Collar type lock device for structural members of staging
US3054630A (en) * 1960-05-13 1962-09-18 Merle P French Scaffolding attachment member
US3122385A (en) * 1960-09-13 1964-02-25 Ponteggi Tubolari Dalminc Inno Scaffolding-brace lock

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716576A (en) * 1954-06-16 1955-08-30 Patent Scaffolding Co Inc Sectional scaffold frame brace locks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716576A (en) * 1954-06-16 1955-08-30 Patent Scaffolding Co Inc Sectional scaffold frame brace locks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017208A (en) * 1959-05-29 1962-01-16 Bil Jax Inc Brace lock for modular scaffolding
US3054630A (en) * 1960-05-13 1962-09-18 Merle P French Scaffolding attachment member
US3027181A (en) * 1960-07-08 1962-03-27 Archie L Tardif Collar type lock device for structural members of staging
US3122385A (en) * 1960-09-13 1964-02-25 Ponteggi Tubolari Dalminc Inno Scaffolding-brace lock

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