US3689024A - Forms for casting concrete - Google Patents

Forms for casting concrete Download PDF

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Publication number
US3689024A
US3689024A US11645A US3689024DA US3689024A US 3689024 A US3689024 A US 3689024A US 11645 A US11645 A US 11645A US 3689024D A US3689024D A US 3689024DA US 3689024 A US3689024 A US 3689024A
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Prior art keywords
forms
members
assemblage
channel
face
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Expired - Lifetime
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US11645A
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English (en)
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Gerhard Notzel
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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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/04—Forming boards or similar elements the form surface being of wood

Definitions

  • ABSTRACT A form for casting concrete comprising a pair of flat skin faces supported by an internal framework formed of at least a supporting rib along each of its longitudinal edges and an intermediate parallel strip establishing therewith at least one longitudinally extending through-channel.
  • a movable bolt member located in each channel and extending substantially the length of the form, movable outward thereof to simultaneously serve as a supporting brace for the form and for any bridging member associated with it.
  • the present invention relates to concrete casting methods particularly to forms used in the casting of poured concrete structures.
  • a form for casting concrete comprising a pair of flat skin faces supported by an internal framework formed of at least a supporting rib along each of its longitudinal edges and an intermediate parallel strip establishing therewith at least one longitudinally extending through-channel in which is located a movable bolt member.
  • the bolt member extends substantially the length of the form and is movable outward thereof to simultaneously serve as a supporting brace for the form and for any bridging member associated with it.
  • the bolt member and the form ribs are dimensioned so that optimum use of space and materials is employed.
  • FIG. 1 is a perspective view of a form made in accordance with the present invention
  • FIG. 2 is a top plan view partially sectioned of the form of FIG. 1,
  • FIG. 3 is a bottom plan view of a plurality of forms assembled in the construction of a ceiling
  • FIG. 4 is a sectional view taken along line 44 of FIG. 3,
  • FIG. 5 is a sectional view taken along line 55 of FIG. 4 and of FIG. 6,
  • FIG. 6 is a sectional view along line 6-6 of FIG. 5,
  • FIG. 7 is a sectional view taken along line 77 of FIG. 8,
  • FIG. 8 is a sectional view taken along line 88 of FIG. 7 and FIG. 9,
  • FIG. 9 is a partial plan view partly sectioned of a second ceiling installation
  • FIG. 10 is a full plan view of the installation shown in FIGS. 7-9.
  • FIG. 11 is an elevational view of an installation for erecting vertical walls.
  • FIG. 1 the present invention is embodied in a pre-assembled form 1 having a pair of smooth rectangular skin faces 2 separated by a rib 3 extending along each of their marginal longitudinal edges.
  • the marginal ribs 3 have smooth planar edges and are secured to the faces 2 in a conventional manner depending, of course, upon the materials used.
  • Intermediate each of the marginal ribs 3 are, similarly, secured one or more strips 4.
  • the strips 4 may be of the same or different material than the ribs 3 or the faces 2, but they are of thinner dimensions and are arranged parallel to each of the ribs. Accordingly there is formed between the strips 4 and the ribs 3 a plurality of through-channels 5 which extend parallel to the longitudinal marginal edge of the faces 2.
  • bolt bar 6 Located within selected through-channels 5 is bolt bar 6, which may also be of the same or different material than that of the rib 3.
  • the bolt bar 6 is dimensioned so as to have generally secure fit within the channel 5, yet be movable longitudinally with respect thereto.
  • the bolt bar 6 is preferably of equal or greater length than the length of the form 1 so that it can act as a suitable internal supporting and bracing member for it. Also it may be moved so that at least part of it extends outward of the transverse end of the form, into a similar channel formed in an adjacent form or as the brace support for a bridging member.
  • at least those in the central portion of the form should be more than twice the width of the bar.
  • each form In normal use, as will be seen in more detail later, the forms are used in multiples to cover the major portion of surface to be covered and are arranged with their longitudinal axis parallel and with as many of their edges abutting one another (FIGS. or 11). In this manner each form may be horizontally or vertically stacked to cover a wide area. When a larger area is to be covered additional forms are stacked adjacent to them so that their transverse ends abut. In this condition one or more of the bolt bars 6 are moved so that they support each of the contiguous forms. In the event a gap or space results between the forms the same bolt bars are located so that they bridge the gap and function to support a bridging member as can be seen for example in FIG. 10.
  • the form be made of wood, for the obvious characteristics of strength, adaptability, adjustably and economy.
  • sheet metal, metal bars, plastic and other similar materials may be used.
  • Wood is suitable since it can easily be cut and trimmed to fit, should small adjustments be necessary.
  • Plastic also has this characteristic.
  • the dimensions are not critical suitable forms have been constructed having the overall dimensions of conventional forms with skins of 10 mm, marginal ribs of 50 mm and intermediate strips of mm so that a channel of 60 mm for the bolt bar is formed.
  • the bolt bar is preferably rectangular or square and of the same width as the channel so that it has a sliding force fit between the inner surfaces of the skins to give suitable support and bracing to the form 1.
  • the width of the channel 5 i.e., between skins 2) may be determined by using standard planed or smooth stock material so that the bolt bars may be made by using multiple pieces of unplaned or raw stock material.
  • the form is exceptionally resistant to bending, and to the exertion of pressure against either of the face skins.
  • the pressure or carrying load capacity of the form may be augmented, as desired, by the insertion of additional bolt bars 6 in any of the channels 5. Either face may be used adjacent the poured concrete and, in fact, both faces may be simultaneously employed, if desired.
  • the marginal ribs may be made of a size where they are greater than half of the transverse distance of the channel 5 i.e., between the cover skins 2) so that the longitudinal marginal edges have a high strength and loading characteristic.
  • Tensioning anchors lateral support fittings etc may, thus be secured to the form without weakening the form at all. Since such enlarged marginal ribs increase the strength of the form, one or more of the intermediate strips may be eliminated or reduced in size.
  • the form may be made of a combination of planed and unplaned common, standard wood planks and sheets so that in assembly they will mate smoothly and uniformly, securely interlocking and provide uniform and universal means for locating and securing bridging members and filling elements to it. Because standard sizes are employed supplemental forms need not be specially constructed. The gaps and spaces being filled by standard size planks or timber members are described in detail later.
  • the bolt bar may be a single square timber of 60 mm, in which case a bridging member of 10 mm may be used, or the bolt bar may be made of two 24 mm unplaned planks which are nailed together and a 22 mm cover plank may be used as the bridging member. Similar construction can be obtained in the English measuring systems since similar standard size timbers and plankings are available. The given measurements are by way of illustration only. I
  • the skin 2 and bolts 6 are of standard dimensions. Accordingly standard size strips, timbers, plankins readily available at any construction site may be used to construct any bridging member or filling element as may be required. Such bridging members and filling elements will be fully compatible with the pre-assembled form. Square timbers of mm and planks of 24 mm or 22 mm and a length of 60 to 80 mm may be used interchangably as bolt material and as interspace, bridging or filling members.
  • FIGS. 3-6 The assemblage of a plurality of pre-assembled forms for the construction of a ceiling is shown schematically in FIGS. 3-6.
  • the ceiling area has dimensions which are not multiples of the pre-assembled forms. Consequently the forms are placed parallel to the length of the ceiling in a manner so that an interspace or void field 7 results between the end-to-end forms, and a marginal space or void field 8 results along one longitudinal edge.
  • a crossing section 9 intersects both fields 7 and 8.
  • plank 10 may be a square piece of timber, which is augmented by a length of thin planking 1 1 set on end contiguous with it so as to flush the space completely.
  • the planks 10 and 11 may be of a single length or of a plurality of pieces.
  • the transverse space 7 may be bridged by a plurality of short bolt bars 6, as seen in FIG. 5, the ends of which are respectively inserted in each of the end-toend forms 1 so that each of the associated forms is securely joined.
  • a thin strip or plywood plank 12 is inserted between the assembled forms so that the skin 2 of each is smooth joined in a uniform facing to the other.
  • FIGS. 7-10 a second installation is shown in which a filling element 10, of the same length of the form 1 is placed between each of the longitudinal marginal edges of adjacent forms. Additional narrow strips 11 and filling elements 10 are used to fill out the entire dimension to be covered. Because all the filling elements are of standard size and compatible with the forms this may be done very easily and economically.
  • the transverse space between the end-to-end forms is filled with a plank 13 supported by the bolt bars 6' Looking at FIGS. 7-9 specifically the bolt bars 6" may be formed of two unplaned planks 14 of a thickness of about 24 mm each. The planks 14 may be nailed to each other. The transverse bridging plan 13 may then be a smooth planed plank of 22 mm thickness so that all portions of the installation lie in a common plane, thus present a smooth face for the poured concrete.
  • FIG. 11 a vertical wall structure is illustrated.
  • the forms be positioned vertically and that filling bars 11" be positioned between each adjacent form preferably extending the full height of the wall.
  • filling bars 11" may be positioned between each adjacent form preferably extending the full height of the wall.
  • supplemental fonns 1 conveniently cut or trimmed from standard forms, may be stacked endwise thereon and secured to the filling elements 11".
  • the bolt bars 6 should preferably be longer than the lower forms so that they extend into the upper supplementary forms.
  • short bolt bars 6' may be nailed with nails or screws to the upper edge of the form 1 to extend into the form 1.
  • the forms may be molded of plastic materials and that the filling elements, bolt bars and bridging elements may be made of molded or extruded tubular or bar stock.
  • An assemblage of forms for use in casting poured concrete comprising a plurality of flat rectangular panel members arranged with their transverse edges in end to end relationship, each of said panel members comprising a pair of outer flat face members, an interna] framework formed of a marginal rib, having a breadth greater than half of the transverse distance between the face members, secured to the interior of each face along each of their longitudinal edges and at least one intermediate strip, said ribs and strips having parallel edge forming at least two longitudinal continuous parallel channels from side to side through the interior of said panel member and opening out of the traverse edges thereof, said channels in each panel being aligned axially with the corresponding channels in adjacent panel members, a bolt bar having a cross section less than that of said channel located in selected ones of said channels and conforming thereto, said bolt bar being dimensioned so as to be freely movable through said channel and to extend outwardly of either transverse side into a corresponding channel in the next adjacent panel member to serve as a support for adjacently arranged panel members.
  • An assemb age 0 forms according to claim 2,
  • bolt bars are formed by a pair of planks having a thickness each of 24 mm and the form includes a supplemental cover having a thickness of 24 4.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (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)
US11645A 1969-02-25 1970-02-16 Forms for casting concrete Expired - Lifetime US3689024A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1909457A DE1909457C3 (de) 1969-02-25 1969-02-25 Betonschalung

Publications (1)

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US3689024A true US3689024A (en) 1972-09-05

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ID=5726287

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Application Number Title Priority Date Filing Date
US11645A Expired - Lifetime US3689024A (en) 1969-02-25 1970-02-16 Forms for casting concrete

Country Status (12)

Country Link
US (1) US3689024A (enrdf_load_stackoverflow)
AT (1) AT295827B (enrdf_load_stackoverflow)
AU (1) AU1163270A (enrdf_load_stackoverflow)
BE (1) BE746030A (enrdf_load_stackoverflow)
CH (1) CH504602A (enrdf_load_stackoverflow)
DE (1) DE1909457C3 (enrdf_load_stackoverflow)
ES (1) ES376638A1 (enrdf_load_stackoverflow)
FR (1) FR2035729A5 (enrdf_load_stackoverflow)
GB (1) GB1303701A (enrdf_load_stackoverflow)
IL (1) IL33913A0 (enrdf_load_stackoverflow)
LU (1) LU60377A1 (enrdf_load_stackoverflow)
NL (1) NL7000943A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332191A (en) * 1992-10-26 1994-07-26 Nolan Terry L Apparatus for making concrete slabs
US5863453A (en) * 1994-12-30 1999-01-26 Hardin; James W. Form connector
EP2511445A1 (de) * 2011-04-14 2012-10-17 Hofin GmbH Plattenartiges Lastaufnahmeelement für Betonierungsschalungen oder für Gerüste im Bauwesen, sowie Verfahren zum Herstellen dieses Lastaufnahmeelements
US10011991B2 (en) 2011-10-07 2018-07-03 Sabic Global Technologies B.V. Multiwall sheet, methods of making, and articles comprising the multiwall sheet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778019A (en) * 1972-09-25 1973-12-11 W Stegmeier Form structure
DE4009425A1 (de) * 1990-03-23 1991-09-26 Hollmann Niels Betonierungs-schaltafel

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185557C (enrdf_load_stackoverflow) *
US1120570A (en) * 1912-08-29 1914-12-08 Blaw Steel Construction Company Column-mold.
US1285295A (en) * 1918-09-21 1918-11-19 Edward C Marqua Collapsible form for concrete construction-work.
US1339912A (en) * 1919-09-11 1920-05-11 Uni Form Company Mold-panel
US1890532A (en) * 1931-06-08 1932-12-13 Insolo Holding Company Building block and wall form
US1911146A (en) * 1932-01-06 1933-05-23 West Virginia Rail Company Road form
US1974130A (en) * 1934-09-18 wedberg
FR1088470A (fr) * 1952-11-28 1955-03-08 Coffrage pour l'établissement de planchers, murs, ou éléments analogues en béton
CH320218A (de) * 1953-04-04 1957-03-31 Holzmann Philipp Ag Schaltafel zur Herstellung von Schalungen für Betonteile
US2933920A (en) * 1956-04-09 1960-04-26 Steuler Industriewerke Gmbh Building blocks
US3124858A (en) * 1964-03-17 Blonde
FR1462698A (fr) * 1965-12-30 1966-12-16 Procédé et dispositifs de coffrage pour exécution de poutres en béton armé
US3461631A (en) * 1967-01-16 1969-08-19 Anthony Brugnola Complementary modules and structures therefrom

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1974130A (en) * 1934-09-18 wedberg
DE185557C (enrdf_load_stackoverflow) *
US3124858A (en) * 1964-03-17 Blonde
US1120570A (en) * 1912-08-29 1914-12-08 Blaw Steel Construction Company Column-mold.
US1285295A (en) * 1918-09-21 1918-11-19 Edward C Marqua Collapsible form for concrete construction-work.
US1339912A (en) * 1919-09-11 1920-05-11 Uni Form Company Mold-panel
US1890532A (en) * 1931-06-08 1932-12-13 Insolo Holding Company Building block and wall form
US1911146A (en) * 1932-01-06 1933-05-23 West Virginia Rail Company Road form
FR1088470A (fr) * 1952-11-28 1955-03-08 Coffrage pour l'établissement de planchers, murs, ou éléments analogues en béton
CH320218A (de) * 1953-04-04 1957-03-31 Holzmann Philipp Ag Schaltafel zur Herstellung von Schalungen für Betonteile
US2933920A (en) * 1956-04-09 1960-04-26 Steuler Industriewerke Gmbh Building blocks
FR1462698A (fr) * 1965-12-30 1966-12-16 Procédé et dispositifs de coffrage pour exécution de poutres en béton armé
US3461631A (en) * 1967-01-16 1969-08-19 Anthony Brugnola Complementary modules and structures therefrom

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332191A (en) * 1992-10-26 1994-07-26 Nolan Terry L Apparatus for making concrete slabs
US5863453A (en) * 1994-12-30 1999-01-26 Hardin; James W. Form connector
EP2511445A1 (de) * 2011-04-14 2012-10-17 Hofin GmbH Plattenartiges Lastaufnahmeelement für Betonierungsschalungen oder für Gerüste im Bauwesen, sowie Verfahren zum Herstellen dieses Lastaufnahmeelements
US10011991B2 (en) 2011-10-07 2018-07-03 Sabic Global Technologies B.V. Multiwall sheet, methods of making, and articles comprising the multiwall sheet
EP2764175B1 (en) * 2011-10-07 2019-10-23 SABIC Global Technologies B.V. A multiwall sheet with an end cap and method of making it

Also Published As

Publication number Publication date
LU60377A1 (enrdf_load_stackoverflow) 1970-04-22
FR2035729A5 (enrdf_load_stackoverflow) 1970-12-18
IL33913A0 (en) 1970-04-20
BE746030A (fr) 1970-07-31
DE1909457B2 (de) 1973-04-26
DE1909457A1 (de) 1970-12-10
CH504602A (de) 1971-03-15
AU1163270A (en) 1971-08-26
DE1909457C3 (de) 1973-11-08
GB1303701A (enrdf_load_stackoverflow) 1973-01-17
NL7000943A (enrdf_load_stackoverflow) 1970-08-27
AT295827B (de) 1972-01-25
ES376638A1 (es) 1972-09-16

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