US3232019A - Perforated constructional elements - Google Patents

Perforated constructional elements Download PDF

Info

Publication number
US3232019A
US3232019A US203602A US20360262A US3232019A US 3232019 A US3232019 A US 3232019A US 203602 A US203602 A US 203602A US 20360262 A US20360262 A US 20360262A US 3232019 A US3232019 A US 3232019A
Authority
US
United States
Prior art keywords
holes
hole
strips
length
next adjacent
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
US203602A
Other languages
English (en)
Inventor
Campbell Arthur John
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.)
TERLAN RES ESTABLISHMENT
Original Assignee
TERLAN RES ESTABLISHMENT
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 TERLAN RES ESTABLISHMENT filed Critical TERLAN RES ESTABLISHMENT
Application granted granted Critical
Publication of US3232019A publication Critical patent/US3232019A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
    • A47B96/14—Bars, uprights, struts, or like supports, for cabinets, brackets, or the like
    • A47B96/1408—Bars, uprights, struts, or like supports, for cabinets, brackets, or the like regularly perforated
    • 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
    • E04G7/26—Connections between parts of the scaffold with separate coupling elements for use with specially-shaped scaffold members

Definitions

  • Constructional elements of this type have been proposedin which thelioles are-circular and of a diameter matching the bolt to bere ceived therein; or in the shape ofelongated slots WhOSG' width matches the diameter of the bolt, oragain wherein the holes comprise a mixture ofcircular holes andelongated slots.
  • Suchconstructional elements can be usedfor the erection of buildingframes, racks, scaffolding, all of which structures involve joining two such elements at right angles to one another.
  • Such-rightangled joints are formed by-passing two or more bolts through coincident circular holes in-two-elements, a rigid joint can be formed.
  • the choice of positions in which coincident holes occur is relatively small-unless the holes in one or both elements are so closeto each other that the constructional element is weakened.
  • joints formed with such; elements lack the rigidity provided by the use of'circular holes alone.
  • a constructional element in the form of a strip or bar having a plurality of identical holes spacedapartl therealong, each hole having the shape of a triangle whose corners are radiused.
  • each hole is circumscribed by an imaginary right angled isosceles triangle and the radiused corner ot the hole adjacent the right angle lies along a segment of a circle, to which circle the legs of-the triangle are tangential;
  • the radiused corners adjacent the ends: of hypotenuse, hereinafter referred to as the base, of the imaginary triangle lie along circular segments having equal, radii of curvature which are less than that of the tangential circular segment defining the third 90corner.
  • This third corner is hereinafter referred to as the apex of the triangular hole.
  • the holes are spaced apart in rows extending along the length of the element, the base of-each hole in. any one row lying along,a commonustraightwline, withthe apices of the holes in any one. row pointing transversely of the length of the element in a direction opposite, to that in which the apices of theholes in the adjacent; row are pointing.
  • FIG. 1 illustrates the pattern and shape of the holes formed in the constnuctional element
  • FIG. 2 shows three mutually perpendicular L-beam elements bolted together at right angles to one another to form the corner joint of a structure.
  • each hole such as 10 is circumscribed by an imaginary right isoscelestriangle XYZ shown in dashed lines and the hole therefore has straight side portions S1, S2 and S3 lying along ,the sides YZ,- ZX, XY, respectively, of the triangle.
  • the adjacent ends of these side portions are interconnected'by circular segments C1, C2 and C3.
  • the segment-C1 lies along a circle to'which the base side portion S1 of the hole is tangential and therefore the diameter of this circle, less tolerance, defines the maximum diameter of bolt which can be passed through the hole.
  • a bolt will be referred to hereinafter as a major bolt.
  • the circular segments C2 and C3 are segments of circles of equal diameter, and this diameter, less tolerance, is the diameter of the bolt which will fit closely into these base corners of the hole.
  • a bolt will be hereinafter referred as a minor bolt.
  • such holes are located in rows along the length of the element, the holes in each row being equally spaced apart and located with their bases lyingalong a common line.
  • the apices of theholes in each row point laterally of-the element in a direction opposite to that in which the apices of the holes in the next adjacent row.
  • each hole in any one rowr is equally spaced from the next adjacent holes of the next adjacent row. Again, the distance between any one hole in one row and the next adjacent hole in the adjacent row is equal to the diameterof the major bolt.
  • FIG. 1 Before passing on to consider FIG. 2, it will be noted from FIG. 1 that two longitudinal rows of holes are necessary to provide the lattice work of imperforate strips here shown. Accordingly two such rows constitute the basic pattern of holes in an element.
  • a half pattern may be used for certain purposes by itself or in conjunction wit-h one or more whole patterns.
  • the constructional elements are conveniently formed from angle section material, in particular L section, and whilst a half pattern of holes may be used in one of the flanges of the element, one or more whole patterns alone or in conjunction with a half pattern may be used in the other flange of the element.
  • FIG. 2 shows a first L section element 11 having a first flange 11a containing two patterns of holes, and a second element 13 having a first flange 13a containing one and a half patterns of holes, the flanges 11a and 13a extending at right angles to one another and lying flat against each other.
  • the corner joint is completed by a third L section element 15 having one flange 15b in abutment with the second flange 11b of the element 11 and its other flange 15a in abutment with the second flange 13b of the element 13.
  • the abutment of the flanges 11a and 1311 which lie in the plane of the drawing will however suffice to illustrate the principle embodied in the invention.
  • the flanges 11a and 13a are in an overlapping position providing coincident holes for the reception of two major bolts and four minor bolts, although of course only two of such bolts are necessary for effecting a stable joint.
  • the extent to which these holes coincide can be changed to provide a multiplicity of dilferent positions of coincidence between the holes for receiving either major or minor bolts, and in a very large number of these positions two bolts can be inserted which will lock the flanges rigidly, that is to say the rigidity of the joint is dependent only on the position of the holes and not on the frictional engagements between the flanges which in turn would depend on the tightness of the bolts.
  • the holes are formed by punching the strip whilst flat and the strip is thereafter bent to L section.
  • the bending will take place along a line equally spaced from two adjacent rows of holes, and for this purpose these two rows of holes are so spaced apart as to allow for a bending margin whose width is equal to the thickness of the strip.
  • the major bolts referred to above are of diameter whilst the minor bolts are of diameter, and the imperforate strips between the holes will therefore be in width.
  • other suitable dimensions may be used.
  • a constructional element comprising an elongated flat strip of material having a plurality of holes spaced apart along its length, each hole being provided for the reception of a bolt and having three straight side portions which lie along the sides of an imaginary isosceles triangle; each pair of adjacent ends of said straight side portions being interconnected by a circular arc portion;
  • the holes being spaced apart in at least two parallel straight rows with the apex of each triangular hole pointing in a direction perpendicular to said rows; each hole in each row being equidistant from the two next adjacent holes in the next adjacent row and with its apex pointing in a direction opposite to that of the apices of said two next adjacent holes; and the spacing between the holes being such that imperforate strips of material remain therebetween, said imperforate strips being arranged in two sets, the strips of one set being parallel to, and equally spaced from, one another and extending at an acute angle to the length of the element in one direction, the strips in the other set being parallel to, and equally spaced from, one another and extending at the same acute angle to the length of the element in the opposite direction.
  • a constructional element comprising an elongated flat strip of material having a plurality of holes spaced apart along its length, each hole being provided for the reception of a bolt and having three straight side portions which lie along the sides of an imaginary isosceles triangle; each pair of adjacent ends of said straight side portions being interconnected by a circular arc portion; the holes being spaced apart in at least two parallel straight rows with the apex of each triangular hole pointing in a direction perpendicular to said rows; each hole in each row being equidistant from the two next adjacent holes in the next adjacent row and with its apex pointing in a direction opposite to that of the apices of said two next adjacent holes; the circular are at the apex of each hole lying on a circle to which the straight side of the hole opposite the apex is tangential; and the spacing between the holes being such that imperforate strips of material remain therebetween, said imperforate strips being arranged in two sets, the strips of one set being parallel to, and equally spaced
  • a constructional element comprising an elongated flat strip of material having a plurality of holes spaced apart along its length, each hole being provided for the reception of a bolt and having three straight side portions which lie along the sides of an imaginary isosceles triangle; each pair of adjacent ends of said straight side portions being interconnected by a circular arc portion; the holes being spaced apart in at least two parallel straight rows with the apex of each triangular hole pointing in a direction perpendicular to said rows; each hole in each row being equidistant from the two next adjacent holes in the next adjacent row and with its apex pointing in a direction opposite to that of the apices of said two next adjacent holes; the circular arc at the apex of each hole having a radius larger than that of the circular arcs defining the other two corners of the hole; the spacing between the holes being such that imperforate strips of material remain therebetween, said imperforate strips being arranged in two sets, the strips of one set being parallel to, and equally spaced from
  • each hole in each row being equidistant from the two next adjacent holes in the next adjacent row and with its apex pointing in a direction opposite to that of the apices of said two next adjacent holes; the width of each said strip being substantially equal to the diameter of the circular are at the apex of each hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Food Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Corner Units Of Frames Or Wings (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Connection Of Plates (AREA)
  • Tents Or Canopies (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
US203602A 1962-03-29 1962-06-19 Perforated constructional elements Expired - Lifetime US3232019A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT626862 1962-03-29
IT674464 1964-03-27

Publications (1)

Publication Number Publication Date
US3232019A true US3232019A (en) 1966-02-01

Family

ID=26325775

Family Applications (1)

Application Number Title Priority Date Filing Date
US203602A Expired - Lifetime US3232019A (en) 1962-03-29 1962-06-19 Perforated constructional elements

Country Status (7)

Country Link
US (1) US3232019A (de)
CH (1) CH391247A (de)
DE (2) DE1509019B2 (de)
GB (2) GB964469A (de)
LU (1) LU41986A1 (de)
MY (1) MY6500063A (de)
NL (1) NL280471A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2606131T3 (es) * 2009-11-09 2017-03-22 Intervet International B.V. Método para cultivar bacterias Lawsonia intracellularis en células McCoy infectadas de forma persistente

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE548902A (de) *

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE548902A (de) *

Also Published As

Publication number Publication date
NL280471A (de)
DE1509019A1 (de) 1969-01-02
MY6500063A (en) 1965-12-31
CH391247A (it) 1965-04-30
GB964469A (en) 1964-07-22
DE1609870A1 (de) 1970-06-25
LU41986A1 (de) 1962-09-03
DE1509019B2 (de) 1971-07-21
GB1054683A (de)

Similar Documents

Publication Publication Date Title
US2990920A (en) Structural building elements
US3284971A (en) Structural elements for metal framing systems
EP0436277A1 (de) Stützträger für Betonschalungssystem
US3999350A (en) Constructional element
CH643907A5 (de) I-foermiges traegerprofil aus leichtmetall.
WO2006045432A1 (de) Industriegerüst
US3224151A (en) Roof beams and supporting columns
US3232019A (en) Perforated constructional elements
US3250051A (en) Pre-formed angle bar with bolt-receiving slots
US3959942A (en) Combined spacer and transverse reinforcing beam
US3180598A (en) Tube clamps
US3043409A (en) Perforated structural angle
US3738690A (en) Splicable structural member
US3468093A (en) Structural bridging
GB1319698A (en) Expanded structural members
US3969867A (en) Constructional element
US3285644A (en) Composite panel and support with increased rupture resistant connection
GB2127082A (en) Formwork soldier
EP0465905B1 (de) Deckenverkleidung
US3333386A (en) Structural reinforcement assembly
US2767001A (en) Constructional element
US3028937A (en) Structural member
US3696572A (en) Support for panels and the like
DE884420C (de) Zerlegbares Gebaeude mit aus Fertigplatten gebildeten Bauteilen, wie Waenden, Daechern, Decken od. dgl.
DE3817475C2 (de)