US3915423A - Formwork fitment for a prop - Google Patents

Formwork fitment for a prop Download PDF

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Publication number
US3915423A
US3915423A US482007A US48200774A US3915423A US 3915423 A US3915423 A US 3915423A US 482007 A US482007 A US 482007A US 48200774 A US48200774 A US 48200774A US 3915423 A US3915423 A US 3915423A
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US
United States
Prior art keywords
support
tube
shuttering
shank
fitment
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
US482007A
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English (en)
Inventor
Jack Raymond Tooley
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.)
Acrow Engineers Ltd
Original Assignee
Acrow Engineers 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 Acrow Engineers Ltd filed Critical Acrow Engineers Ltd
Application granted granted Critical
Publication of US3915423A publication Critical patent/US3915423A/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
    • E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
    • 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
    • E04G11/486—Dropheads supporting the concrete after removal of the shuttering; Connecting means on beams specially adapted for dropheads
    • 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
    • E04G25/00—Shores or struts; Chocks

Definitions

  • ABSTRACT A builders prop or a fitment for a prop comprising a head plate which is connected to the prop body, or to a base plate to be secured to a standard prop head plate by a shank, the shank carrying both a support tube which is slidably and rotatably engaged over the shank, and a shuttering element support member, the support tube or shank being formed with an angularly inclined surface to engage a member extending from the shank or tube respectively, the arrangement being such that rotation of the support tube around the shank raises or lowers the support tube relative to the head plate, the shuttering element support member being so shaped and arranged as to be supported by the support tube relative to the shank and in a second angular or strip" position of the support tube around the shank, the shuttering element support member being free to slide down the shank away from the head plate.
  • Sheet 2 of 2 US. Patent Oct. 28, 1975 FORMWORK FITMENT FOR A PROP
  • This invention relates to supports for shuttering elements used during the construction of concrete (or the like) roofs, floors and ceilings or similar soffits.
  • a prop or a fitment for a prop, comprising a head plate which is connected to the prop body or to a base plate to be secured to a standard prop head plate, by a shank preferably of circular crosssection, the shank carrying a support tube and a shuttering element support member, the support tube being rotatable around the shank and being formed with an angularly inclined surface engaging against and resting on a corresponding member fixed to and extending from the shank the arrangement being such that relative rotation of the support tube around the shank raises or lowers the support tube relative to the head plate, the shuttering element support member being positioned between the head plate and the support tube and being so formed and arranged as to be supported by the support tube in one angular position thereof and, in a second angular or strip" position thereof, being free to slide over the support tube.
  • the shuttering element support membcr carries a beam on which concrete formwork panels rest then the dimensions of the various members will be such that in the erected or upper position of the shuttering element support member, the upper faces of the panels are aligned with the upper face ofthe main plate of the props or fitments therefor.
  • the support tube, and hence the shuttering element support member On turning the support tube about the main shank, the support tube, and hence the shuttering element support member is firstly lowered gradually to strip the formwork panels from beneath the partially set concrete, the concrete remain ing supported by the head of the prop or fitment; and on further turning of the support tube to the stripped" position the shuttering element support member, and hence the beams and panels supported thereby fall down over the support tube rapidly, to complete the stripping of the shuttering to a position in which the beams and panels can be disengaged for reuse else' where,
  • the support tube is provided with outwardly extending lugs or ears on which the shuttering element support member rests in the casting position, the shuttering element support member being formed with a corresponding slot or slots so that when the lugs or cars are aligned with the slot or slots in the stripped position as a result of turning of the support tube about the shank, the shuttering element support member can fall down over the support tube to enable the formwork beam and panels to be removed.
  • the downward movement of the shuttering element support member over the support tube is preferably limited by a pin or pins or the like projecting from the underlying shank and engaging in a slot or slots in an upwardly extending tubular portion of the shuttering element support member.
  • FIG. I is an elevation ofa fitment in accordance with the invention for attachment to the top of a standard extensible prop, showing the parts in the erected position;
  • FIG. 2 is a view similar to FIG. 1 showing the fitment as viewed from a position from that of FIG. 1;
  • FIG, 3 is a view similar to FIG. 1 showing the parts in the stripped or disengaged position
  • FIG. 4 is a view similar to FIG. 2 but showing the parts in the stripped position.
  • the fitment shown in the drawings is intended for connection to the standard top plate of a standard ex tensible prop (not shown) the arrangement being such that the base plate 2 is bolted to the top plate of the prop.
  • the head plate 4 of the fitment is connected to the base plate 2 by means of a tubular shank 6 and a support tube 8 is mounted on the shank 6 and is free for limited rotation thereabout.
  • a shuttering beam support member 10 having an upstanding tubular body 12 is located over the shank 6 adjacent the head plate 4 with the underside ofthe support member 10 resting on two ears 14 extending outwardly from the support tube 8.
  • a support beam diagrammatically illustrated at 16 rests on the plate 10 at each side thereof and carries concrete formwork panels 18 in known fashion, the upper surface of the panels 18 being aligned with the upper surface of the head plate 4 of the prop fitment.
  • the other end of the beams are supported by other similar prop fitments and other beams may be similarly supported to form the desired area of supported formwork panels.
  • a pin 20 extends out from the shank 6 adjacent the base plate 2 and is engaged by an inclined or cam face 22 formed on the bottom edge of the support tube 8.
  • Concrete may then be cast onto the top surface of the formwork panels and over the head plates 4 of the prop fitments.
  • a handle 25 projecting from the outer surface of the support tube 8 is used to turn the support tube through 90 around the shank 6 of each prop fitment.
  • the support tube 8 due to the inclination of the cam face 22 is gradually lowered over the shank 6 causing a similar gradual lowering of the support member 10 and hence of the beams 16 and pulses 18 relative to the head plate 4 and relative to the cast and semi-set con cretev
  • This movement therefore achieves a gradual initial stripping of the panels and the support beams from the concrete leaving the concrete supported by the head plates 4 of the prop members.
  • the ears l4 are aligned with slots 24 extending upwardly through the tubular portion 12 of the shuttering element support member at each side thereof and the support member can then drop over the support tube with ears 14 pass' ing up within the slots 24 as can be seen in FIGS. 3 and 4.
  • the extent of downward movement of the support member is limited by the engagement of a pin 26 extending out from the shank 6 with the top surface 28 of slots 30 formed in the tubular extension 12 of the support member 10, the slots 30 being positioned at 90 to the slots 24.
  • the beams 16 and panels 18 can be readily removed from the support for re-use elsewhere leaving the partially set concrete 32 still supported by the head plate 4 of the various prop fitments.
  • cam face 22 and pin could be located at a slot along the length of the tube 8.
  • the support member 10 may be secured to the tube 12 at any position along its length to fit the dimensions of beams and panels and need not be located at the bottom of the tubular portion.
  • tube 6 may form the upper member of an extensible prop and the base plate 2 will in such case be unnecessary.
  • a fitment for a prop said fitment being adapted to support at least one shuttering element of the type used with concrete formwork, said fitment being movable between a full support position, and preliminary and full strip positions, said fitment comprising a shank having a headplate fixed to the top end thereof, said shank being connectable to said prop in fixed relation thereto,
  • a shuttering tube slidably disposed in coaxial relation with said shank and said support tube, said shuttering tube mounting at least one shuttering support member thereon,
  • At least one support ear mounted to one of said support tube and said shuttering tube and extending substantially radially therefrom, and the other of said support tube and said shuttering tube defining at least one ear slot adapted to receive said support ear therein, said support ear cooperating with a contact surface on that tube to which said ear is not fixed to maintain said support and shuttering tubes in the full support position,
  • anti-rotation means interconnecting said shank and said shuttering tube, said anti-rotation means permitting sliding motion of said shuttering tube relative to said support tube, but preventing rotational motion of said shuttering tube relative to said support tube, and
  • cam means interconnecting said shank and said support tube, initial rotation of said support tube relative to said shank and said shuttering tube causing said cam means to lower slightly said shuttering tube away from said headplate to the preliminary strip position, and further rotation of said support tube relative to said shank causing said support tubes ear to move out of contact with said contact surface into alignment with said shuttering tubes ear slot causing said shuttering tube to drop further away from said headplate into the full strip position.
  • said anti-rotation means comprising an anti-rotation slot defined in one of said support and shuttering tubes
  • an anti-rotation pin fixed to the other of said support and shuttering tubes, said anti-rotation pin being received in said anti-rotation slot.
  • cam means comprising a cam surface defined in one of said support and shuttering tubes
  • cam pin fixed to the other of said support and shuttering tubes, said cam pin being in contact with said cam surface.
  • a fitment as set forth in claim 1 including a handle fixed to said support tube, said handle permitting manual rotation of said support tube relative to said shuttering tube.

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  • 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)
  • Moulds, Cores, Or Mandrels (AREA)
  • Adornments (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
US482007A 1973-06-29 1974-06-24 Formwork fitment for a prop Expired - Lifetime US3915423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3121273A GB1473846A (en) 1973-06-29 1973-06-29 Supports for concrete formwork

Publications (1)

Publication Number Publication Date
US3915423A true US3915423A (en) 1975-10-28

Family

ID=10319698

Family Applications (1)

Application Number Title Priority Date Filing Date
US482007A Expired - Lifetime US3915423A (en) 1973-06-29 1974-06-24 Formwork fitment for a prop

Country Status (13)

Country Link
US (1) US3915423A (cs)
BE (1) BE816819A (cs)
CA (1) CA1009208A (cs)
DE (1) DE2431295A1 (cs)
ES (1) ES427798A1 (cs)
FI (1) FI198674A7 (cs)
FR (1) FR2235251B3 (cs)
GB (1) GB1473846A (cs)
NL (1) NL7408768A (cs)
NO (1) NO143762C (cs)
PL (1) PL89982B1 (cs)
SE (1) SE393423B (cs)
ZA (1) ZA743839B (cs)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056254A (en) * 1975-01-20 1977-11-01 Acrow (Engineers) Limited Supports or concrete formwork
US4147321A (en) * 1976-10-07 1979-04-03 C. Evans & Sons Limited Drop-head support assembly
GB2344609A (en) * 1998-12-08 2000-06-14 Sgb Services Plc Scaffold base plate utilising a rotatable cam for setting of a scaffold element
KR20010044167A (ko) * 2000-12-18 2001-06-05 윤요현 보,슬라브와 같은 수평부재 하부 형틀 조기 탈형공법
KR100462410B1 (ko) * 2002-11-07 2004-12-17 페리유한회사 슬래브 거푸집 시공 방법
US20060042179A1 (en) * 2004-08-05 2006-03-02 Peter Vanagan Slab formwork systems
US20070200048A1 (en) * 2006-02-28 2007-08-30 Pro-Shore, Llc Systems and methods for shoring concrete
DE102006055306A1 (de) * 2006-11-23 2008-05-29 Peri Gmbh Stützenkopf für eine Deckenschalung
US20090212195A1 (en) * 2005-02-23 2009-08-27 Alberto Arocena Bergareche Peripheral Slab Formwork System
US8763982B1 (en) * 2011-12-02 2014-07-01 David W Murrell Single whaler-backed form support bracket system
US20170067263A1 (en) * 2014-03-04 2017-03-09 Form 700 Pty Ltd An adapter for a formwork support structure
US20170241147A1 (en) * 2014-08-19 2017-08-24 Form 700 Pty Ltd Concrete formwork and a formwork support bracket
CN108425492A (zh) * 2018-02-28 2018-08-21 福建省华银铝业有限公司 一种建筑模板的顶板支撑结构
CN109680930A (zh) * 2017-10-18 2019-04-26 五冶集团上海有限公司 模板早拆支撑体系施工方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1059490A (en) * 1976-04-27 1979-07-31 Jack R. Tooley Apparatus for use in buildings
DE3036306C2 (de) * 1980-09-26 1983-12-22 Josef 7611 Steinach Maier Ausschalhilfe für Deckenschalungen
FR2957957B1 (fr) * 2010-03-26 2015-01-02 Deko Structures, systemes, et procedes de coffrage de dalles
CA2994076A1 (en) * 2018-02-06 2019-08-06 Brand Shared Services Llc Formwork system
CN112627506B (zh) * 2020-12-31 2021-12-14 东晟兴诚集团有限公司 一种塑性建筑模板及其支撑装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239188A (en) * 1964-03-11 1966-03-08 Kwikform Ltd Shuttering system for use in building construction
US3784151A (en) * 1971-04-28 1974-01-08 Kwikform Ltd Formwork for use in supporting shuttering

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239188A (en) * 1964-03-11 1966-03-08 Kwikform Ltd Shuttering system for use in building construction
US3784151A (en) * 1971-04-28 1974-01-08 Kwikform Ltd Formwork for use in supporting shuttering

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056254A (en) * 1975-01-20 1977-11-01 Acrow (Engineers) Limited Supports or concrete formwork
US4147321A (en) * 1976-10-07 1979-04-03 C. Evans & Sons Limited Drop-head support assembly
GB2344609A (en) * 1998-12-08 2000-06-14 Sgb Services Plc Scaffold base plate utilising a rotatable cam for setting of a scaffold element
GB2344609B (en) * 1998-12-08 2002-07-24 Sgb Services Plc Improvements in or relating to a scaffolding arrangement
KR20010044167A (ko) * 2000-12-18 2001-06-05 윤요현 보,슬라브와 같은 수평부재 하부 형틀 조기 탈형공법
KR100462410B1 (ko) * 2002-11-07 2004-12-17 페리유한회사 슬래브 거푸집 시공 방법
US20060042179A1 (en) * 2004-08-05 2006-03-02 Peter Vanagan Slab formwork systems
US8308126B2 (en) * 2005-02-23 2012-11-13 Ulma C Y E, S. Coop Peripheral slab formwork system
US20090212195A1 (en) * 2005-02-23 2009-08-27 Alberto Arocena Bergareche Peripheral Slab Formwork System
US20070200048A1 (en) * 2006-02-28 2007-08-30 Pro-Shore, Llc Systems and methods for shoring concrete
US20100044548A1 (en) * 2006-11-23 2010-02-25 Artur Schwoerer Prop head for ceiling formwork
DE102006055306B4 (de) * 2006-11-23 2010-10-07 Peri Gmbh Stützenkopf für eine Deckenschalung
US8262056B2 (en) 2006-11-23 2012-09-11 Peri Gmbh Prop head for ceiling formwork
DE102006055306A1 (de) * 2006-11-23 2008-05-29 Peri Gmbh Stützenkopf für eine Deckenschalung
US8763982B1 (en) * 2011-12-02 2014-07-01 David W Murrell Single whaler-backed form support bracket system
US20170067263A1 (en) * 2014-03-04 2017-03-09 Form 700 Pty Ltd An adapter for a formwork support structure
US10119282B2 (en) * 2014-03-04 2018-11-06 Form 700 Pty Ltd Adapter for a formwork support structure
US20170241147A1 (en) * 2014-08-19 2017-08-24 Form 700 Pty Ltd Concrete formwork and a formwork support bracket
US10260244B2 (en) * 2014-08-19 2019-04-16 Form 700 Pty Ltd Concrete formwork and a formwork support bracket for forming a suspended floor slab
US10533330B2 (en) 2014-08-19 2020-01-14 Form 700 Pty Ltd Concrete formwork and a formwork support bracket for forming a suspended floor slab
CN109680930A (zh) * 2017-10-18 2019-04-26 五冶集团上海有限公司 模板早拆支撑体系施工方法
CN108425492A (zh) * 2018-02-28 2018-08-21 福建省华银铝业有限公司 一种建筑模板的顶板支撑结构

Also Published As

Publication number Publication date
FI198674A7 (cs) 1974-12-30
NO742333L (cs) 1975-01-27
NL7408768A (cs) 1974-12-31
ZA743839B (en) 1975-06-25
CA1009208A (en) 1977-04-26
BE816819A (fr) 1974-10-16
ES427798A1 (es) 1976-08-01
FR2235251B3 (cs) 1977-05-06
SE7408192L (cs) 1974-12-30
GB1473846A (en) 1977-05-18
FR2235251A1 (cs) 1975-01-24
DE2431295A1 (de) 1975-01-23
AU7060674A (en) 1976-01-08
NO143762C (no) 1981-04-08
NO143762B (no) 1980-12-29
SE393423B (sv) 1977-05-09
PL89982B1 (cs) 1976-12-31

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