US3879010A - Support structure for use in casting reinforced concrete ceilings and the like - Google Patents

Support structure for use in casting reinforced concrete ceilings and the like Download PDF

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Publication number
US3879010A
US3879010A US354667A US35466773A US3879010A US 3879010 A US3879010 A US 3879010A US 354667 A US354667 A US 354667A US 35466773 A US35466773 A US 35466773A US 3879010 A US3879010 A US 3879010A
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United States
Prior art keywords
middle portion
tubes
frames
frame
screw
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Expired - Lifetime
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US354667A
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English (en)
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Ake W Norlander
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Individual
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Individual
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    • 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
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
    • E04G17/042—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by threaded elements
    • 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
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means

Definitions

  • ABSTRACT A support structure for casting reinforced concrete ceilings and the like consists of an upper unit and a [30] Foreign Application Priority Data May 5 1972 lower unit which overlap each other and which are 52 us. 249/210; 249/29 mutually connected y means of a Screw which 511 lm. E04g 11/54 ables the nits be vertically displaced relative to 5 n w of Search 249 210 l8 19 24 2 32 each other and which is exposed to tension but not to 249/212; 248/354; 216/7; 269/141, 309 pressure under the influence of the weight of the concrete.
  • the support structure has also means for sideways adjustment of the shutters carried by the structure.
  • SUPPORT STRUCTURE FOR USE IN CASTING REINFORCED CONCRETE CEILINGS AND THE LIKE This invention refers to a support structure for use in casting reinforced concrete ceilings and the like.
  • the main object of the invention is to provide a support structure which makes it possible to operate it rapidly and with little effort. Another object is to carry it out in such a way that it may be easily transported from one place to another an important feature being to keep its weight within modest limits. Still another object of the invention is to use simple and inexpensive means for operating the structures in a positively controlled manner.
  • FIG. I is a schematical side view of a support structure according to the invention.
  • FIG. 2 is an end view of the support structure according to FIG. 1.
  • FIG. 3 is a section on a bigger scale of the uppermost portion of the support structure according to FIG. 1 and part of two shutters supported thereby.
  • FIG. 4 is a plan view of a locking bolt. forming part of FIG. 3.
  • FIG. 1 While a complete support structure preferably comprises four units according to FIG. 1 only one such unit is now described as the units are identical. It may also be noted that the four units in practice are interconnected by means of braces which are removable and which make it possible to build up structures which in a plan view are rectangular.
  • Each support structure unit comprises an upper unit, generally designated 1, which has an upper beam or rail, preferably in the shape of a hollow rectangular profile 2 and two mutually parallel tubes 3a, 3b secured to said profile and extending downwardly.
  • Each tube 3a. 3b telescopically receives a vertical tube 4a, 4b forming part of a mainly U-shaped member, having a web portion 5.
  • the tubes 3 and 4 have holes 6 which may be brought into registry with each other and in which may be introduced pins or similar means to lock the outer and inner tube in predetermined axial positions relative to each other.
  • a part 7 Secured to the web portion of the U-shaped member is a part 7 which is provided with an internally threaded hole 8 which consequently serves as a nut for a screw 9.
  • Said screw has a head 10 and at an axial distance therefrom a flange 11 while its opposite end is formed to a square end 12 or similar grip means.
  • Each support structure also comprises a lower unit, generally designated 13.
  • This unit consists of two mainly identical parts only one being visible in FIG. 1. In the following only one of these parts will be described in detail.
  • the lower unit includes a bottom rail 14 and two tubes or rods 15a and 15b extending vertically therefrom. Said tubes or rods are telescopically mounted in tubes 16a and 16!) which are mutually connected by means of a transverse bar 17 having a centrally disposed hole 18 which is intended to radially guide an unthreaded portion of the screw 9 as appears from FIG. 1.
  • the transverse bar 17 has such a width that, Le, extension perpendicular to the plane of the drawing that it bridges the distance between the two parallel parts of the lower unit.
  • Said second bar 19 also has a central opening 20 for radially guiding an unthreaded portion of the screw 9.
  • the lower unit comprises two parallel parts which are mutually connected in the manner shown in FIG. 2.
  • Theparts which are located behind the parts visible in FIG. 1 are 15a" and 16a and the distance between the parts is such that. the upper unit is guided between the parts of the lower unit.
  • the support structure is extended when the screw is rotated such that the web portion 5 moves towards the transverse bar 17 and that it is compressed when the screw is rotated in the opposite direction.
  • a load applicated upon the profile 2 thus results in a tensile stress upon the screw which makes it possible to construct it in a slender and light-weight manner.
  • the support structure after casting is diminished by rotating the screw such that web portion 5 moves away from the transverse bar 17 the relatively small thrust is taken up by the flange lI.
  • the upper unit 1 may be provided with a wheel or roller at its lower part and preferably sideways projecting so as to make it possible to transport the support structure rolling on said wheel or roller.
  • metal profiles 21 according to FIG. 3 may be used. These profiles have a horizontal flange which is relatively thick and is provided with a longitudinally extending T-shaped opening 22, 23 the narrower part of which 23 opening downwards. Extending obliquely upwards from said horizontal flange is a second flange 24.
  • the shutters which are preferably made from reinforced plastic material in the shape of pans 26 have their downwards extending side walls 25 in contact with the inner surface of the flanges 24 and secured thereto for instance by means of rivets.
  • the metal profiles may be adjusted sideways in order to obtain a proper centering and to bring the abutting ends of the profiles 21 in contact with each other.
  • the shafts 28 of bolts 29 each having an eccentrically disposed head 30 which as appears from FIG. 4 is elliptic with the narrowest part somewhat narrower than the opening 23 but with its widest part somewhat narrower than the recess 22.
  • the bolt has a threaded part 31 and at its end a square end or similar grip 32 for a wrench or the like.
  • the profiles 21 may be sideways adjusted by turning the bolt with a wrench and that it is then easily locked in desired position by tightening the nut 33.
  • a support framework preferably intended to form part of a casting board for casting concrete building elements such as ceilings, comprising an upper and a lower frame.
  • said frames being vertically adjustable relative to each other, said upper frame having a middle portion and telescopic tubes extending upwardly from said middle portion, the free ends of said tubes being spaced apart and being intended to support directly or indirectly the form members, said lower frame having a similar middle portion and two telescopic tubes extending downwardly from said second middle portion, the free ends of said second tubes being spaced apart and intended to rest directly or indirectly against a supporting surface, said middle portions of said upper and lower frames being connected by means of a screw enabling said frames to be vertically adjusted.
  • the middle portion of at least one of said frames being provided with guiding parts located at each side of said screw and forming guides for said tubes of the other frame, and said frames being so located that the middle portion of said lower frame is situated above the middle portion of said upper frame.
  • a support as claimed in claim 1 a rail mounted on said first tubes, a securing means on said rail and shutters supported by said rail and said securing means.
  • a support structure as claimed in claim 3 wherein said securing means of said upper unit consists of bolts and includes metal profiles, plastic shutters attached to said metal profiles and said metal profiles are secured to said rail of said upper unit.

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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)
  • Bridges Or Land Bridges (AREA)
US354667A 1972-05-05 1973-04-26 Support structure for use in casting reinforced concrete ceilings and the like Expired - Lifetime US3879010A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE05906/72A SE365840B (xx) 1972-05-05 1972-05-05

Publications (1)

Publication Number Publication Date
US3879010A true US3879010A (en) 1975-04-22

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ID=20267496

Family Applications (1)

Application Number Title Priority Date Filing Date
US354667A Expired - Lifetime US3879010A (en) 1972-05-05 1973-04-26 Support structure for use in casting reinforced concrete ceilings and the like

Country Status (7)

Country Link
US (1) US3879010A (xx)
CA (1) CA996730A (xx)
DE (1) DE2321925A1 (xx)
FR (1) FR2184304A5 (xx)
GB (1) GB1431098A (xx)
NL (1) NL7306242A (xx)
SE (1) SE365840B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868494A (en) * 1998-07-20 1999-02-09 Power Technology Unlimited, In. Wheeled motorized mixer
CN108118892A (zh) * 2017-12-31 2018-06-05 重庆工商职业学院 可反复使用的模板支座

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1242591A (en) * 1984-12-27 1988-10-04 Ronald J. Johnston Truss arrangement
CN104947958A (zh) * 2015-07-20 2015-09-30 苏州新达电扶梯部件有限公司 一种可调桁架装配支撑架
CN111287491A (zh) * 2020-03-24 2020-06-16 杭州杭固建筑特种工程有限公司 一种建筑工程钢结构支撑架

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378984A (en) * 1943-07-28 1945-06-26 Couture Romain Ceiling board prop
US2446255A (en) * 1945-07-09 1948-08-03 Vocisano Domenico Form clamping support
US2498595A (en) * 1947-10-22 1950-02-21 William A Vircks Paper-hanging device for papering ceilings
US2510767A (en) * 1945-07-09 1950-06-06 Vocisano Domenico Form clamping support

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378984A (en) * 1943-07-28 1945-06-26 Couture Romain Ceiling board prop
US2446255A (en) * 1945-07-09 1948-08-03 Vocisano Domenico Form clamping support
US2510767A (en) * 1945-07-09 1950-06-06 Vocisano Domenico Form clamping support
US2498595A (en) * 1947-10-22 1950-02-21 William A Vircks Paper-hanging device for papering ceilings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868494A (en) * 1998-07-20 1999-02-09 Power Technology Unlimited, In. Wheeled motorized mixer
CN108118892A (zh) * 2017-12-31 2018-06-05 重庆工商职业学院 可反复使用的模板支座
CN108118892B (zh) * 2017-12-31 2020-03-10 重庆工商职业学院 可反复使用的模板支座

Also Published As

Publication number Publication date
GB1431098A (en) 1976-04-07
NL7306242A (xx) 1973-11-07
SE365840B (xx) 1974-04-01
FR2184304A5 (xx) 1973-12-21
DE2321925A1 (de) 1973-11-15
CA996730A (en) 1976-09-14

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