US3182772A - Telescopic metal girders - Google Patents

Telescopic metal girders Download PDF

Info

Publication number
US3182772A
US3182772A US83405A US8340561A US3182772A US 3182772 A US3182772 A US 3182772A US 83405 A US83405 A US 83405A US 8340561 A US8340561 A US 8340561A US 3182772 A US3182772 A US 3182772A
Authority
US
United States
Prior art keywords
girder
extension
girders
elements
stay
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
US83405A
Other languages
English (en)
Inventor
Alziari Louis
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3182772A publication Critical patent/US3182772A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E04G11/54—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like
    • E04G11/56—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like of telescopic type

Definitions

  • Such girders provided with extensions, allow cutting out all the staying means used hitherto and their interest lies chiey in the fact that they may serve for spans or bearingdistances of various lengths, which spans may be comparatively large.
  • VsuchV elements whichfare conventional for frameworks including ordinary girders having a predetermined length spanning the space separating two bearing surfaces, are not applicable inter alia to the girders including a plurality of elements telescopically sliding inside each other to match various spans or bearing distances, by reason of the compressional forces which have a tendency to make such elements slide inside one another.
  • my invention has for its object to allow the application of oblique stays to girders provided with extensions, with all the advantages of a light structure, a reduction in cost price and an easy handling, while the system obtained remains however rigid and subjected as a whole to a camber suiting the conditions of use.
  • My invention consists in providing a girder including a plurality of elements adapted to suit various bearing distances, with a removable runged stay engageable at one end through one of its rungs on one of the girder elements, while its other end is provided with screwcontrolled clamping means or the like, in association with a runged locking system operating endwise through a stop in a direction parallel with the axis of the girder system, to urge the elements forming said system against ⁇ each other.
  • FIGS. l to 4 V show a girder provided with a single extension, FIG. ⁇ l being an elevational view of the whole system and FIG. 21a ⁇ front view ⁇ of the stay, illustrated separately.
  • FIGS. 3 and 4 are large-scale transverse cross-sections of details ⁇ of the girder system through lines III-III and IV,-IV of FIG. l showing respectively the location ofrthe extension slidably carriedV inside the girder and the ⁇ locking through a single. double-acting Wedge operating both longitudinally and vertically.
  • FIG. 9 a cross-section through line IX-IX of FIG. 6.
  • the girder P has its upper flange constituted by an inverted channel iron 1 connected by a trellice-work 2 with a lowerV iange 3V sloping downwardly and forming -a stationary stay between the outer end of the girder and the upright 4 which acts as a'king-post.
  • the end of girder P adjacent the king-post is thus deeper than the other end of girder P.
  • Said king-post upright includes in practice four-bars, of which two are welded to each side of the upper flange 1, as shown at 4a-4b and 4'a- 4b, the four bars being all connected together through their lower ends, so as to form a unit incorporating or t provided with a hook system C.
  • four-bars of which two are welded to each side of the upper flange 1, as shown at 4a-4b and 4'a- 4b, the four bars being all connected together through their lower ends, so as to form a unit incorporating or t provided with a hook system C.
  • a tie means or stay T which is independent and removable, is provided as shown in FIG. 2, in the shape of a runged ladder 9, between two stringers 10.
  • clamping means constitutecl, for instance, by a screw 11.
  • the system including the main girder and its extension is rst brought to the desired length, so that it may rest on the desired bearing surfaces, while two successive cleats 8 arelocated to either side of the gap separating It is sufli cient to slide over the plate 5 through the aperture between the uprights of each pair 4a-4b or 4a-4b a locking member 12 which locks the extension R against any longitudinal sliding with reference tothe beam V1.
  • the stay T is then secured through hooking of one of its rungs over the lower end C of the king-post unit 4, in a manner such that the clamping screw 11 may be in a position for which it engages a stop provided for this purpose, at the end of the extension or at a point near said end of the extension.
  • the stay Upon screwing down of said screw 11,'the stay is tensioned and it is thus possible to give the system including the girder and its extension the rectilinear shape or the camber required.
  • the locking member 12 It is also necessary to ensure a vertical clamping of the I iron forming the extension in contacting relationship with the inverted channel iron forming the member 1 of 3 the girder. It is suicient, to this end, for the locking member 12 to have its lower and upper surfaces forming a locking wedge member, as illustrated in FIG. 4, in order to obtain as simply as possible the locking in a horizontal direction against relative sliding of the two elements of -the compound girder and extension system and a clamp- Y is ,then inserted between the lower ends C1 and C2'of the f upright king-posts of the two terminal girders, while the locking of the three elements, both horizontally and vertically, is obtained as precedingly by the locking members or wedges 121 and 122.
  • the extension R forms a trellice-work and the same is the case for the girder P', but the extension is higher than the girder P.
  • the web and the depending sides of the upper inverted U-shaped iron 1 forming the upper ange of the girder holds slidingly, as. in the preceding case, the upper ange of the extension i length of said stay.
  • the extension in the case illustrated includes, beyond its end engaging the upper ange 1 Yof the girder and beyond the king-post 4', Aa projection 13b bearing against the girder, as shown more particularly in FIG. 7.
  • many other arrangements may be resorted to in the execution of my invention, according to the applications to be considered and the conditions to be satistied or to be selected as more advantageous in the different cases, said modifications lying obviously within the 'scope of the accompanying claim.
  • a telescopic girder for supporting timbering for reinforced concrete comprising a'rst beam having a horizontal top chord and an inclined bottom chord so that the first beam has one end deeper than the other, upright king post means at said deeper end, a second beam telescoping at one end with said deeper end of said rst beam, said second beam having .a series of downwardly depending longitudinally spaced cleats disposed lengthwise thereof, said king post means having an aperture extending laterally therethrough, a locking wedgemember removably disposed in said aperture and extending removably between an adjacent pair of said downwardly depending cleats thereby adjnstably positioning said first and second beams in any of a plurality of longitudinally adjusted positions relative to each other, tie means interconnectirlg the lower end of said king post means below said wedge and the end ofV said second beam remote from said first beam, and means tensioning said tie means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Joining Of Building Structures In Genera (AREA)
US83405A 1960-01-21 1961-01-18 Telescopic metal girders Expired - Lifetime US3182772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6602A FR1245439A (fr) 1960-01-21 1960-01-21 Perfectionnements dans les poutrelles métalliques télescopiques

Publications (1)

Publication Number Publication Date
US3182772A true US3182772A (en) 1965-05-11

Family

ID=8571627

Family Applications (1)

Application Number Title Priority Date Filing Date
US83405A Expired - Lifetime US3182772A (en) 1960-01-21 1961-01-18 Telescopic metal girders

Country Status (6)

Country Link
US (1) US3182772A (fr)
CA (1) CA664997A (fr)
ES (1) ES264146A1 (fr)
FR (1) FR1245439A (fr)
GB (1) GB964517A (fr)
MC (1) MC267A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808761A (en) * 1971-09-09 1974-05-07 Imp Modular Syst Ltd Modular building construction

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE173953C (fr) * 1905-02-11
US1233743A (en) * 1912-02-19 1917-07-17 Otto Arndt Templet-frame.
DE384996C (de) * 1915-12-09 1923-11-10 Frantisek Petras Traeger fuer Deckenverschalungen aus zwei durch ein Dreiecksystem versteiften, gegeneinander verschiebbaren, aus Winkeleisenpaaren bestehenden Teilen
US2403853A (en) * 1941-10-21 1946-07-09 Fromson Bertram William Extendible bearer or support for temporary or permanent use in building construction
US2415461A (en) * 1947-02-11 Scaffolding
FR1098051A (fr) * 1953-11-19 1955-07-18 Support pour étayer des coffrages
FR1125298A (fr) * 1955-05-26 1956-10-29 Poutre extensible pour tous usages
US2951564A (en) * 1957-05-31 1960-09-06 Meyer Otto Gunter Telescopic girder for shuttering work
US2974762A (en) * 1952-09-23 1961-03-14 Hunnebeck Emil Mauritz Girder units
US3023863A (en) * 1956-09-10 1962-03-06 Klaus Ernst Mathias Form support
US3059738A (en) * 1958-10-13 1962-10-23 Le Materiel Special D Entpr So Temporary concrete supporting system and method

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415461A (en) * 1947-02-11 Scaffolding
DE173953C (fr) * 1905-02-11
US1233743A (en) * 1912-02-19 1917-07-17 Otto Arndt Templet-frame.
DE384996C (de) * 1915-12-09 1923-11-10 Frantisek Petras Traeger fuer Deckenverschalungen aus zwei durch ein Dreiecksystem versteiften, gegeneinander verschiebbaren, aus Winkeleisenpaaren bestehenden Teilen
US2403853A (en) * 1941-10-21 1946-07-09 Fromson Bertram William Extendible bearer or support for temporary or permanent use in building construction
US2974762A (en) * 1952-09-23 1961-03-14 Hunnebeck Emil Mauritz Girder units
FR1098051A (fr) * 1953-11-19 1955-07-18 Support pour étayer des coffrages
FR1125298A (fr) * 1955-05-26 1956-10-29 Poutre extensible pour tous usages
US3023863A (en) * 1956-09-10 1962-03-06 Klaus Ernst Mathias Form support
US2951564A (en) * 1957-05-31 1960-09-06 Meyer Otto Gunter Telescopic girder for shuttering work
US3059738A (en) * 1958-10-13 1962-10-23 Le Materiel Special D Entpr So Temporary concrete supporting system and method

Also Published As

Publication number Publication date
GB964517A (en) 1964-07-22
FR1245439A (fr) 1960-11-04
CA664997A (en) 1963-06-18
MC267A1 (fr) 1961-08-22
ES264146A1 (es) 1961-11-01

Similar Documents

Publication Publication Date Title
US3325957A (en) Adjustable length joist
IE902324A1 (en) Formwork System
DE2123351C3 (de) Schalungseinrichtung für eine wiederverwendbare Schalung einer Verbunddecke
CA1066907A (fr) Support pliant
KR102307943B1 (ko) 캔틸레버 교량의 착탈식 지지브라켓 및 그를 이용한 캔틸레버 교량의 시공방법
US1888181A (en) Concrete building form
US3341995A (en) Bracing structure
US2882583A (en) Prefabricated form for composition walls
US3182772A (en) Telescopic metal girders
US3120941A (en) Scaffold frame
US2723437A (en) Apparatus for aligning and supporting wall forms
DE102007047919A1 (de) Traggerüst und Verfahren zur Demontage und Transport
CN112727077A (zh) 楼承板辅助支撑机构
US3584825A (en) Deck form support
DE9219027U1 (de) Trägerprofil für eine tragende Konstruktion eines Balkons
DE3045389C2 (fr)
US3088562A (en) Extensible and contractible joist
US3035805A (en) Scaffolding element having relatively movable parts
US3221461A (en) Beam construction
GB2070185A (en) Scaffold joints: supporting planking: bracing
EP0566528A1 (fr) Plate-forme pour véhicule utilitaire
CH382950A (de) Abstützvorrichtung einer Eisenbetondecke
US3062341A (en) Form support
RU2035570C1 (ru) Подвижная опалубка для бетонирования перекрытий
US3189373A (en) Quick-connection assembly for metal structures