US2940153A

US2940153A - Concrete wall form securing means

Info

Publication number: US2940153A
Application number: US677253A
Authority: US
Inventors: Allen Homer Edgar
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-08-09
Filing date: 1957-08-09
Publication date: 1960-06-14
Anticipated expiration: 1977-06-14

Description

June 14, 1960 H. E. ALLEN concasm mu. FORM SECURING MEANS 3 Sheet shet 1 I Filed Aug 9' 1957 HOMER EDGAR ALLEN INVENTOR. W M

June 14, 1960 H. E. ALLEN CONCRETE WALL FORM SECURING MEANS 3 Sheets-Sheet 2 Filed Aug. 9; 1957 HOMER EDGAR ALLEN INVENTOR.

June 14, 1960 H. E. ALLEN 2,949,153

' CONCRETE WALL FORM SECURING MEANS Filed Aug. 9, 1957 3 Sheets-Sheet 3 5 FIG 3 s i a 5,; \in f FIG HOMER EDGAR ALLEN INVENTOR.

Un St t P en .This present invention relatesto the general art of concrete wall form securing means and for use where relatively wide panels are used for the wall from elements. More particularly this invention relates to a means for supporting concrete wall forms in which the plywood panels particularly are employed. With these panels a plurality of vertical backing or studding members are employed. Wale pieces are placed horizontally outside of the vertical members in order to insure alignment ofthe various vertical studding members and to thus insure that the finished concrete wall faces will provide true plane surfaces. areemployed to facilitate the placement and particularly the securing, in position, of the various supporting wooden or metal studding or wale members to the end that the walls can be quickly set up and after the wall is poured the forms can be dismounted with a minimum of labor.

The use of plywood panels has become quite generally applied to concrete wall forms and this prevalent use has brought to the attention of construction people, that there are certain very definite problems raised through the use of the plywood panels. In old ship-lap walled concrete forms the lapping of the ship-lap and the staggering of the end joints practically precluded the leakage of concrete out through the forms. When plywood sheets are used, however, they are of large dimension and have a large area acted upon by the plastic, if not fluid, concrete when it is poured. This yieldable concrete tends to bow out the centers of the panels andparticularly tends to spring the panels along their margins.

to the end that considerable difiiculty has been experienced in producing concrete walls that were a true plane, a fact that was objectionable from appearance standpoint and more particularly from a contractors point of view of using an excess amount of material.

This present invention is directed to means that insure that the margins are fixedly secured together during the pouring period. Convenient means are provided in addition as part of the bracket arrangement which insures the quick and accurate positioning of the vertical and horizontal supporting members employed in order to prevent any distortion of the plywood panels when subjected to the pressures exerted by the'fluid concrete as it is being poured and further as aggrevated by the tamping .or vibrating operations that are employed to insure a homogeneous mixture of the concrete aggregates.

A principal object of this present invention, therefore, is to provide means which will be convenient to place and economical in cost and which will insure the accurate alignment of the various plywood panels employed to form the wall surfaces of concrete forms used in building concrete walls.

A further object of this present invention is to provide metal bracket members which may be secured by nailing or screw fastening to the plywood panels near, their margins and then adapted to be engaged by a second Metal bracket members part of the bracket assembly which will join together the two separate metal members on the original abutting plywood sheets to the end that the joints will be pressed together tightly and held in that position during the construction period.

A further object of this invention is to provide wale timber brackets which are formed as part of the clamping unit and thus the weight of the wale tends to hold the clamp means in position against vibration and the like.

A further object of this inventions to provide metal bracket assemblies which are so formed that they may be adapted to a wide variety of operational conditions;

Further objects, advantages and capabilities will be, apparent from the description and disclosure in the drawings, or may be comprehended or are inherent in thedevice.

Figure lis a perspective view illustrating parts of a concrete wall form and the placement of the clamping and aligning bracket units.

FigureZ is a perspective view illustrating a wall form,

showing the two wall face forms and illustrating the means employed to back up the plywood sheets and prevent their distortion during the pouring operations.-

Figure 3 is a'vertic al sectional view showing one .form

of using the bracket assembly of this invention.

Figure 4 is a vertical sectional view through the two walls' of a concrete form and illustrating particularly the use of wales and the concrete form tie rods.

Figure 5. is aperspective view illustrating two of'thei coacting bracket members that are adapted to be secured to the plywood panels and their stiffening members.

Figure 6 is a fragmentary perspective view, partly in section, illustrating the means for positioning thecoucrete form tie rods.

Referring more particularly to the disclosure in the drawings, the numerals 10 and 12 designate the opposite faces of a typical form for the construction of a concrete wall. The actual facing material is preferably sheet material of considerable size. This may be built up from the various forms of fabricated boards or panels and for such use certain hard boards and metal may be employed. However, the preferred material among contractors at this time are plywood sheets. This material is readily available in all parts of the country and has unusual rigidity for its size and provides large smooth rectangular panel faces without any cracks. While my present equipment will accommodate plywood sheets in either a horizontal or vertical extending position, I have shown, as a preferred example the plywood employed with its longest dimension vertically disposed.

The various plywood sheets as 14 and 16 meet, in the. arrangement as indicated in Figure 2, with vertical joints 18. To stiffen the relatively

large panels

14 and 16, a plurality of studs disposed longitudinally to form panel stiffening members-as 20, 22, 24, 26,28 and 30 are employed. A preferred arrangement is to employ one of the stiffening members along the center line of a panelafter the showing of

members

22 and 28 and disposed near the margins of the panels similar stiffening memhers '20 and 24 for-

panels

14 and 26 and 30 for panel 16. These members are preferably set back from the' edge of the panel sufficiently so that a portion of the metal bracket assembly can be employed at several points along the margin of the panels. It will beapparen-t it is believed that even a reasonably large number of parallel stiffening members as illustrated in Figure 2 for in-;

Patented June 14, 1960 V 3 These timbers should be selected with at least one straight edge and when these are suitably pressed against the vertical members orstudding 20,- 22, 24 and the like, alignment can be assured for the

various panels

14 and 16 sov that the interior surfaces of forms 10 and 12 will be regularplanm.

7 In all construction work par-ticularlywhere high priced 'materials such as the heavy plywood, indicated in these present drawings, is used every endeavor must be made to recover the expensive panels after they are used to form o'ne wall and use them in successive constructions.

'I- hisreuse of the panel stockand the stiffening members indicates" very'clearly that no nailing must be permitted To facilitate this procedure the clamp member as 40 or 42 secured to the margins oft-he plywood 'sheets and to the edges of the stiffening members as 20, 24, 26

and 28, thus securing the units together; For the

central stiffeners

22 and 28, it is usually suflicient to employ one

member

40 or 42 at each end of the stiffener as indicated at 80 in Figure 2. The facing sheets as 14 or 16 are then handled as a nitwith their stiffeners and clamp members attached and this fabrication is not disthat willinterfere with the dismounting of the forms after their instant use. 'This makes it very desirable to employ metal brackets, thatwill coact with each other to insure the rigidity and tightness required of the forms and yet V admit the ready assembly, andjparticularly the easy dismounting of the forms without damage to the form'mate- 2 so as to insure the. interchangeability of the various panels and provide that thecoacting clamp members as 40 and 42 of two abutting sheetsbe positioned so that they willcoact as beexplained laterin the securing and clamping of the paneledges' together. Members 4'0-and 42 are shown most clearly probably in Figure. 7 5 and it will be noted that these, members as they abut providea' square opening as at $4,.toposition the=centering'washer 46 positioned on tie 74. s It is for this reason that when the clampmembers are secured to'th'e plywood as'by screws" entering the screw holes. 45 that their exact placement is very desirable. 'It will be noted

thafeach member

40 and 42 has a right angle bend which provides the bearing surfaces as 41 and 43. These surfaces also have the screw openings 45 which facilitates nailing or screw fastening the bracket member to the edges of'the stifiening members.

Clamp members

40 and 42 are provided with outwardly extending, headed detents 50. These are arranged with cylindrical portions as 52 and heads 54 which have a surface parallel to their supporting plate.

Attention is directed'particularly-to Figures 1 and 3' in which-a Wale bracket member 60 is shown. 7 This mem-" berhas a rest portion 62 and outer turned up portion 63 forming a Wale guide which terminates in a marginal angled portion 64. A pressure screw 65 may be employed where the width dimension of waist 32 varies At its opposite end a second larger and .turned up por" assembled when the forms'are demounted. Wale brackets 60. supp y the ning. an ampin means whichhe 'the form members in place during the wall building. The

wales assure alignment during the: concrete pouring and setting period. In. theforms after the concrete has set, first the wales are removed and then --the W816 brackets 69 may be removed from detents 50 and the form facing sheets '14 or 16 may then be removed as 1 panel engaging face portion and a studding engaging por 72' ofthe form dated 74. In some instances it maybe desirable that this slot engage a nut which may 'bethreaded onto the tierod 74 and of course time will besaved by-being able to leave the nut threaded onto the tie rod'instead' of taking it off to pass therod through a round hole. The rods as 74 are madein various types;

however, it has been found that this bracket arrangement will normally be workable with the various types now 7 readily available in the market a If thellarge for-m facing sheets, as '14 16, are used in ahorizontal arrangement, clamp members 40 and-'42 are revolved iiOf. With thedetents-SO spaced equally in directions wale brackets '60 may still berused' describedfl To obtain working advantage from any form 7 equipment is preferable to have the units shop ,pre-' b iea edqan o a e them'inimum'ot ss m yin flis It'is believed, that i-t will'be' clearly apparent from the above descriptionand the diseltgsure inthedrawingsthat the invention comprehengds a novel'construction" concrete form beams. A v r Having: thus disclosed the invention,- claim:

1. A'concrete wall form including-vertically abutting rectangular form facing panels and vertical 'studding iii-- cluding studs adjacent-the vertical margins of said-panels stiffening said panels and -e'orriprising v pairs of c'oactingclamp members each of the clamp" members having *a:

tiondisposed at right angles to said faee portion;

clamp members having their faceportion secured-'tothe" vertical margins of said panels and stndding'engaging. portion secured to said studs-adiacent the'ver't'ical marginsiofsaid panels, 'wale brackets' 'removably tosaid pairs of clamp members and securing the clamp brackets having a. normally horizontal restportion and means to 'reccivea head of .at least one of said headed tie IOdS'IO limit outward lateral movement of said wall form.

2. A concrete wall form as recited in claim 1 in which said panels are positioned with-their longer dimension vertically disposed and said vertical studding includes in-* tennediate studs positioned in the center ofs'aid panels and secured. thereto at each end of intermediate studs. 3. Alconcretewal'l form as-reeited-inclaim 1 in which said face portion of said clamp members terminates in a face edge which defines a cutout portion forming one halfnf'a form tie rod positioning enclosure; and a washer disposed on said form tie;rods seated in said enclosure.

Aconcrete wall form Jastrecited inclaim 1' in which said Wale brackets are removably secured to saidpa'ir-s ofclamp rnembers by means of outstanding headed detents secured to said face portion of said clamp members and .interengaging said Wale brackets, said-walemember as it is supportedby said walebragiketto force 5 said outstanding headed detents are constituted by a pair of outstanding headed detents secured to said face portion of each of said clamp members, said detents being positioned so that the detents of a pair of coacting clamp members are substantially equidistant vertically and hori- 5 zontally, said openings defined by said clamp face being formed in the shape of bayonet slots and positioned to simultaneously receive and engage the detents of a pair of coasting clamp members, and said means to receive a head of at least one of said headed tie rods is constituted 10 by an additional bayonet slot defined by said clamp face.

References Cited in the file of this patent UNITED STATES PATENTS 6v Tl'OiGl uut. 15, 1935 Bosco Apr. 1, 1941 Schlatter Apr. 8, 1941 Huntington Mar. 24, 1953 Dul-leck May 12, 1953 Dygert Sept. 14, 1954 Dahlstrom June 21, 1955 Stewart Ian. 8, 1957 Arrighini et a1 Apr. 21, 1959 Hillberg Sept. 22, 1959 OTHER REFERENCES Construction Methods and Equipment (article), March Ham Feb 26 1907 15 9 7, pag s 187 and 190.