US2976596A

US2976596A - Support plates for tie down system for concrete forms

Info

Publication number: US2976596A
Application number: US494377A
Authority: US
Inventors: Chester I Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-03-15
Filing date: 1955-03-15
Publication date: 1961-03-28
Anticipated expiration: 1978-03-28

Description

March 28, 1961 c. l. WILLIAMS 2,976,596

SUPPORT PLATES FOR TIE DOWN SYSTEM FOR CONCRETE FORMS Filed MaICh l5, 1955 2 SheetsSheet 1 March 28, 1961 c. 1. WILLIAMS 2,976,596

SUPPORT PLATES FOR TIE DOWN SYSTEM FOR CONCRETE FORMS Filed MaICh 15, 1955 2 Sheets-Sheet 2 y SUPPORT PLATES FOR TIE DOWN SYSTEM FOR CONCRETE FURMS Chester I. Williams, 751 NE. Lombard St., Portland, reg.

Filed Mar. 15, 1955, Ser. No. 494,377

14 Claims. (Cl. 25-131) This invention relates to concrete forms, and more particularly to an apparatus for tying and alignment of cantilever forms in a minimum of time.

This invention is an improvement of my co-pending application, Serial No. 323,528, iiled December 2, 1952, for Cantilever Form, and incorporates certain features of my co-pending application, Serial No. 233,853, tiled .lune 27, 1951, for Method and Apparatus for Handling Forms, now U.S. Patent No. 2,825,115, granted March 4, 1958 and Serial No. 233,851, tiled June 27, 1951, for Dummy She-Bolts, now U.S. Patent No. 2,823,441, granted February 18, 1958.

Prior to my invention, concrete forms, particularly those used for pouring of massive concrete structures, assembled the forms to tie rods and the like anchoring devices with the tie rods usually positioned in a horizontal plane parallel to the pouring of the lifts. With forms erected, `for example, as disclosed and claimed in the above inst-mentioned co-pending application Serial No. 323,528, there is a tendency for the concrete in the reset position of the form to spring and spall about the shebolt. This is also particularly true with horizontally positioned she-bolts connected to a tie down in which the tie rod is positioned at an acute angle with respect to the form. The expression spring is that pressure at some distance from where the waler rod enters the concrete, which would have a tendency to bend or spring the waler rod more than if the leverage were next to the concrete where the embedded portion made it rigid. The expression spall above means the tendency of the concrete to fail in compression, resulting in breaking out in chunks at the point where the waler rod enters the concrete and underneath the same. For example, when the forms are moved within three days, sometimes the compression in pounds per square inch of concrete does not exceed two hundred to ive hundred pounds, whereas ultimately it would probably reach three thousand pounds. This low compression makes it necessary to use a larger diameter rod to support the loading of the form and that is why on heavy dam constructions, especially cantilever type forms that are supported entirely on the clamps, it is necessary to use larger diameter whaler rods regardless of the size of the inside rod. Although the strength of the inside rod has a bearing on the diameter of the outer unit to the extent that the stronger the inside rod is the fewer are required and hence the larger the diameter of the outer rod has to be to take the necessary load in compression, for example, in actual practice, the minimum diameter outer unit that is considered practical on tie down and oi rock forms is one inch diameter on dam construction, whereas as low as eleven-sixteenths of an inch diameter for the same one-half inch inner rod on the tie through construction in commercial buildings may be used. For steel or wood cantilever forms on dam construction, the minimum diameter of one and one-fourth inches is used on these outer clamp rods, whereas for the same size three-fourths inch inner rod in commercial con- "ice struction one would normally use a one inch diameter outer rod.

It is therefore a principal object of my invention to provide an improved and simplilied form construction wherein the form can be set with the anchoring means, such as tie rods, at an acute angle and with the corresponding shebolts for supporting the forms and attached to the tie rods, also set atan acute angle to prevent spring and Spa'11.,f

It is also a principal object of the invention to provide an improved/form construction incorporating'shebolts and tie rods placed at an acute angle wherein the form may be aligned from the top Where it is most convenient to have the adjustment, especially when the form is set to a chalk line. In order to accomplish this particular object as a particular feature of the invention, it is further desired to provide bins formed lengthwise with respect to the forms at each line of clamping brackets for storage of the she-bolts, clamp brackets, securing means such as wing nuts and the like, to have greater ease in the assembly of the concrete form construction to a face ot` a previously poured lift.

Another object of the invention is to provide `an improved board construction for the sheathing of a concrete iorm in which the opposite edges of the bolts are grooved so that the normal expansion and contraction of the boards forming the sheathing from being wet and dry will not buckle the boards.

Still another object of the invention is toprovide means i for placing the boards forming the sheathing of a form under a predetermined compression. y

Still another object of the invention is to provide an improved form of bracket construction wherein the bracket construction may be used for angular assembly of the shebolt to the bracket for an angular range between the minimum dimensions of-the she-bolt with the she-bolt set at an angle of approximately 30 and preferably at 45 to and also the bracket provides for setting the she-bolt at 90 to the plane of the concrete form construction.

Still another object of the invention is to provide a wing nut construction with one lever of the double wing nut shorter to unbalance it slightly so that While it will spin on or oil better than a single lever nut, its unbalance will prevent any tendency for it to loosen under vibration more than a half-turn, which would place the heaviest lever in a downward position.

Still another object of the invention is to provide improved forms of brackets associated with the sheathing of the concrete form construction to provide for the angular relationship of t-he she-bolt with respect to the form construction.

It is also an object of the invention to provide a form constructed in accordance with the above objects which may be used in combination with the improved form of dummy she-bolt construction as disclosed and claimed in my co-opending application, Serial No. 233,851, now U.S Patent No. 2,823,441, granted February 18, 1958 which will permit the ready removal of the she-bolt from the anchoring means and the raising of the forms, after which an ordinary she-bolt may be attached to the anchoring means and the forms leveled in accordance with the procedure of this invention for the next pouring in combination with a simple portable lifting or hoisting mechanism which may be positioned adjacent the face of the concrete being formed for lifting the form while the dummy shebolts are being removed and replaced by ordinary shebolts.

Still another object of the invention is to provide a concrete form in accordance with the objects of this invention with a concrete form construction and adjustments therefor as disclosed and claimed in my copend 3 ing application, Serial No. 323,528, filed December 2, 1952 for Cantilever Form.

Still another object of the invention is to provide adjusting means operatively connectedto the strongbacks of the form wherein the form may be leveled at the top of the form.

In order to l'accomplish the above objects of my invention, I have provided a 'simpleV form construction which is adapted for use either with dummy she-bolts or with ordinary she-bolts and which may be used with tie rods connected at an angle to anchoring means embedded in a previously poured lift, of bedrock, and auother of the anchoring means aixed to the lift to which the concrete lform is Vabutted for pouring the next successive lift. i have also provided an improved form of sheathing construction so that the normal expansion and contraction of the boards when being wet and dry will not buckle this sheathing and will keep the edges of the boards from opening up. In this improved form construction, the sheathing boards are bolted together rather than nailed. The improved form construction of this invention is adapted to be relocated for pouring successive lifts ltogether with simple form handling, carrying, or lifting means which are portable, and may readily be carried from one position to another by the erectors on the job for raising the forms and holding them in position while the forms are secured in erected position and atlixed to the face of the block upon which the forms are being supported. To assist in the assembly of the she-bolts to the tie rod, a suitable scalolding may be provided with bins formed on the concrete form construction, preferably positioned below the point at which the she-bolts extend when affixed by clamping brackets wherein the she-bolts, clamping brackets, and securing means may be stored for erection in place and also stored after removal prior to the resetting of the forms for pour ing a successive lift.

In order to erect this improved form o cantilever-type of form to the face of a block being poured, an ordinary she-bolt may be used with the tie rods and the improved form of clamping brackets and wing nuts, although it is within the scope of the invention to use dummy she-bolt construction together with the ordinary she-bolt which replaces the dummy she-bolt for aiixing the form to the face of the 'block being poured, and which is particularly adaptable for the erection of the cantilever type of form. This particular form of construction is disclosed and claimed in the above-mentioned co-pending applications.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the `art from the disclosure herein given.

To this end, my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims.

In the drawings, wherein like reference characters represent like or corresponding parts:

Fig. l is a view in side elevation, partly in section, illustrating the improved concrete form construction of my invention;

Fig. 2 is a plan view of an upper support plate for mounting the rods for clamping the sheathing of the form together;

Fig. 3 is a perspective view of an angular plate through which the upper she-bolt extends;

Fig. 4 is a channel-shaped member for alixing to the bottom `of the sheathing and through which the bottom she-bolt extends;

Fig. 5 is a plan view of an improved clamp bracket of this invention illustrating a she-bolt and improved wing nut;

Fig. 6 is a side elevation, partly in section, illustrating 4 Y the she-bolt, clamp bracket, and wing nut assembly of Fig. 5, with the wing nut rotated Fig. 7 is a view in elevation of the improved concrete form construction of my invention, illustrating the concrete form construction aixed to a lift of a massive concrete construction.

Referring now to the drawings, particularly Figs. l through 4, there will Vbe described the improved cantilever type form of this invention together with the means for anchoring the form in its adjusted position. A cantilever type concrete form construction 10 including sheathing l1 and strongbacks 12 in the form of double three inch by eight inch studding or waler supports 13 which may be erected on four to live foot centers shown as being erected on the peripheral faces of a concrete block construction ld, such as is used on dam construction. For ordinary concrete form construction where large lifts of concrete are being cast, the strongbacks such as illustrated formed from studding or waler supports are the equivalent of a strongback eight by eight inches and may be formed either from one piece or from a plurality of members shown to dimensions twelve inches by twelve inches in cross section, and the sheathing is made up of preferably three `by six inch board members 15, and the sheathing or form facing may be made up of members four inches in thickness. The relative lengths of these cantilever type forms as they are erected may range from twenty-five feet to fifty feet in length and may even extend to seventy-live feet. The spacing between strongbacks may be as set forth above, though it may vary from iive feet six inches and usually is six feet. The lengths of the lifts poured and with which these forms are adapted for use may extend as long as three hundred feet. The particular method of erect ing the forms as illustrated in Figs. 1 and 7 may be used with form handling devices as disclosed and claimed in the aforementioned co-pending applications but, for the sake of simplicity, the disclosure has been omitted and reference is made to the above-mentioned applications with respect to particular form handling devices which may be used in lifting the forms for resetting. The particular form with which this invention is being described is substantially seventy-tive feet in length and this may be raised with three of the form handling devices, such as illustrated and described in the aforementioned co-pcnding application. The form handling devices which are particularly disclosed and claimed in the afore mentioned copending application, Serial No. 233,853, now U.S. Patent No. 2,825,115, granted March 4, 1958, are adapted for raising the forms when pouring successive lifts or layers one upon the other, The forms may be usually erected in the ordinary manner, starting from bedrock, and pigtails or tie rods may be anchored in placevin the bedrock to which the forms are mounted and the necessary bracing applied for erecting the form for the rst pouring.

Fig. 1, for example, illustrated the method of this invention in which the concrete form 10 is illustrated after starting either from bedrock or a previous pour 16 has been poured and allowed to set followed by the second pour 14 also permitted to set,'and the'forrn lifted to the position shown. Prior to this, a pigtail anchor 17 having an arcuate end portion 13 had been set in place in a drilled hole 19 in the bedrock 16 or a prior pour. The pigtail anchor 17 is then grouted in place by suitable grouting 20. Although, for the purpose or" illustrating the invention, a pigtail anchoring means of the type as shown may be used, it is also within the scope of the invention that other suitable forms of rock anchoring means may be used such as, for example, that of the copending application of Chester I. Williams and Duane Williams, Serial No. 488,792, for Rock Anchor, tiled February 17, 1955. To the threaded end of the pigtail anchoring means, a high tensile strength steel coup-ling 21 is aixed and to agresse this is attached a high tensile strength tie rod 22 preferably cut to a predetermined length and threaded at the opposite end for the mounting of a tapered she-bolt 23.

The diameter of the tie rods 22 may vary within the range from substantially one-half inch to one inch or more, and the she-bolts may also vary within the range from one and one-eighth irrch -to one and three-fourths inch or more depending upon the load to be supported by 'the concrete form construction in the pouring of the concrete lift. The threaded end of the tie rod is complementally threaded into the corresponding threaded portion of the dummy she-bolt. The tapered end 24 of the dummy she-bolt 23, after it is removed from the concrete, leaves a tapered opening 25 in the concrete slab which may later be cemented. It is also Within the scope of the invention that an ordinary or regular shebolt may be used rather than a dummy she-bolt 23. It is preferred, however, to use a dummy she-bolt and regular she-bolt construction as disclosed and claimed in my co-pending application, Serial No. 233,851, filed June 27, 1951 `for Dummy She-Bolts, now U.S. Patent No. 2,823,441, granted February 18, 1958. This tapered opening 2S permits the insertion of the tapered end 24 of an ordinary tapered she-bolt construction 26 as the relative taper of the dummy she-bolt is greater than that of the ordinary she-bolt. This provides for the easy insertion of the regular she-bolt so that -it may be attached to the threaded end of the tie rod Z2 which has been cast in place with the threaded end extending into the large tapered opening 25 left by the removal of the dummy she-bolt. The particular form of the dummy she-bolt construction is disclosed and. claimed in the aforementioned co-pending application, Serial No. 233,- 851, U.S. Patent No. 2,823,441, granted February 18, 1958, and need not be further described with the method of the erection of this invention.

At the time the lift 14 is poured, there is set a pigtail anchoring means 27 which is forced in the low comp-ression concrete prior to its setting. This pigtail anchoring means is similar yto that as disclosed in my co-pending application, Serial No. 233,853, for Method and Apparature for Handling Forms, filed June 27, 1951, now U.S. Patent No. 2,825,115, granted March 4, 1958. This method of inserting pigtail anchoring means simplifies the erection of the form though, in certain instances where necessary, the pigtail anchoring means can be inserted within the poured lift after it has been set at any suitable angle such as described with reference to the pigtail anchoring means 17 inserted in bedrock or previous lift, and the straight form of pigtail anchoring means 27 may also be inserted within a drilled hole and suitably grouted in place. With the preferred method of inserting prior to the setting of the concrete and tamping in place, the erection of the forms is speeded and the amount of concrete that can be poured Within a given time is increased.

Referring to Fig. 1, the tie rods 22 in the previously poured lift 14 and the next successive lift are preferably set at a predetermined angle, and may preferably be set at an angle of substantially 45 as illustrated to prevent spring and spall.

Although the invention has been disclosed with tie rods attached to threaded couplings, in turn attached to the threaded ends of the pigtail anchoring means, it is also within the scope of the invention that the tie rods at the lower end may be adapted for coupling to a rod hiclrey splicer of the type as disclosed and claimed in my co-pending application, Serial No. 233,852, for Rod Hickey Splicer, led June 27, 1951 (now abandoned). When used with a rod hickey construction, `it is not necessary for the lower end of the tie rods 22 to he threaded, and they may be cut to the desired length While being erected. However, it is necessary to have one end threaded which is attached to either the dummy she-bolt 23 or the regular she-bolt 26.

The concrete form 10 is then raised by hoisting means (not shown) of the type as disclosed and claimed in my co-pending application, Serial No. 233,853 for Method and Apparatus for Handling Forms, tiled June 27, 1951, now U.S. Patent No. 2,825,115, granted March 4, 1958, or `othersuitable hoisting means which may be attached to loops (not shown) as illustrated and described in the aforementioned application. After the form has been raised from its lower position in which the lift 14 was poured to its present position as shown in Fig. 1, and while suspended in this position, the regular tapered shebolts 26 mounted on the form are positioned through the concrete form as will be particularly described later with regard to the construction of the improved concrete form for insertion of the dummy she-bolts 23. The regular tapered she-bolt 26 is affixed to the threaded end of the tie rod 22 previously cast within the concrete lift by attaching a Wrench to the squared end 27 of the regular she-bolt 26 and iirmly threading the she-bolt in position on the threaded end of the tie rod 22. An improved form of clamping bracket 28, the construction of which will be particularly described with reference to Figs. 5 and 6, and adjusting wing nut 29 are then threaded upon the she-bolt with a face 38 of the, clamping bracket abutting the front faces of the walers or studding 13 as illustrated in Figs. 1 and 7. When the wing nut is adjusted in position, the form 10 is clamped against the face of the cast block 14, after which, if desired, doubleheaded nails 3l may be driven in position through holes 32 provided in the bracket 28 to aix the bracket in position upon the strongback of the form.

The upper dummy she-bolt 23, which is assembled in place on the concrete form construction 10 as shown in Fig. 1 in conjunction with a clamping bracket 28" and wing nut 29', is set at a predetermined angle to be affixed to the threaded end of the upper tie rod 22 which is being assembled in place from the yupper pour line of the previous lift i4. The clamp bracket 28 is mounted at the upper ends of the spaced walers 13 as illustrated in Figs. 1 and 7. After the upper tie rods have been axed to their respective she-bolts 23, for example, as illustrated in Fig. 7, it is necessary to adjust the form to the particular angle depending upon whether a vertical face is desired or the form is being set for pouring an inclined or battered face. The face of the form may he adjusted vertically by adjusting the she-bolt 23 with respect to the threaded end of the tie rod 22. It is also conventional procedure to use adjusting means placed between the rear of the strongback 'at the bottom of the contiguous poured lift for aligning the lform to a predetermined set line. With this particular construction it is also within the scope of the invention that the improved adjusting means such as `disclosed and claimed in my co-pending application, Serial No. 323,528, for Cantilever Form, led December 2, 1952, may be used or the `adjusting means in the form of a lifting jack as disclosed in the aforementioned application, Serial No. 233,853, now US. Patent No. 2,825,115, granted March 4, 1958. After making the necessary adjustments, depending upon the type of adjusting means used to align the form to a predetermined set line, the adjusting nuts 29 `and 29 are rmly secured to take the thrust of the concrete when poured against the face of the form. Double-headed nails 31 may or may not, as desired, be secured in place through the holes 32 of the upper bracket 28 in its rinal adjusted position.

With the usual she-holt construction and anchoring means, the pigtail constructions 17 and 27 through the tie rods 22 and couplings 21 will develop the strength desired to withstand the thrust of the poured concrete of the next lift, depending upon the size of tie rod and associated pigtail anchoring means used. The pigtail anchoring means of this invention will develop approxier e mately a thirty-ve thousand pound pull in each anchor under test Whereas the actual load is usually approximately one-half, so that there is always a sufficient factor of safety. In a form construction erected in the manner described, it is possible to wor-k along the sides of the form preparing the surface of the concrete for the next pour with a great deal of freedom. If the adjustment means of the construction as disclosedand claimed in my co-pending application, Serial No. 323,528, is used, it is also much easier to adjust the form from the top thereof in accordance with the improved aligning means'of the aforementioned invention. This has also been made possible by the dummy she-bolt construction of the aforementioned co-pending application, Serial No. 233,851, now U.S. Patent No. 2,823,441, granted February 15, 1958 and which has been described in connection with the disclosure of the method of erecting forms of this invention. Since vertical spacing for the location of the dummy she-bolt 23 and regular she-bolt 26 has been predetermined during the fabrication of the forms, all that is necessary is for the dummy she-bolts 23 to be set in the form as illustrated in Figs. 1 and 7. The tie rods 22 may then be assembled to the dummy she-bolts, the tie rods 22 being first coupled to their respective pigtail -anchors 27 through the couplings 21.

Referring to Figs. 1 through 4 and 7, the novel features of the improved concrete form construction incorporating the positioning means for supporting the dummy and regular she-bolts at a predetermined angle to prevent spring and spall will be described. This improved concrete form construction incorporates certain features of my co-pending application, Serial No. 323,528 for Cantilever Form, filed December 2, 1952, and further includes the improved positioning means and other features to provide a simple form of form construction of the cantilever type which may be alixed to anchoring means which are integrally cast at an angle Within a previously poured lift, and to which the upper she-bolts of the form may likewise be detachably connected to anchoring means positioned at an angle and substantially parallel to the previous anchoring means, so that the concrete form construction can be subsequently raised and reset for attaching to the previous integrally cast anchoring means and to the next anchoring means for adjusting the alignment of the form. Prior to my invention, the sheathing or boards which may be three inches oy-six inches or even larger, were usually nailed to the strongbacks. It has been found that this method of erecting forms, although satisfactory, permits the edges of the boards forming the face to warp, causing ridges to be formed in the poured lift because of the tendency of the boards to Warp as they go through cycles of from wet to dry as the concrete is poured thereagainst, and the forms stripped after the concrete has been set, becoming dry as they are erected in position prior to the pouring of the next lift. To overcome this objection, the edges of each of the boards are grooved longitudinally as at 35 to prevent this warping. Instead of nailing this improved form of facing to the strongback construction i2 or studding or waler supports 13, a channel-shaped bracket 36 providing a lower supporting bracket, Figs. l and 4, may be suitably secured by bolting, using through bolts 37 extending through holes 38 in the bracket 36. The bolts may also extend through similarly formed hotles 38. Likewise, it is also within the scope of the invention that lag screws may be used instead of the through bolts 37. If through bolts 37 are used, wing nuts 39 may be used for securing to the threaded ends of the through bolts 37. Other forms of securing means may also be used.

An upper plate 40 providing an upper supporting bracket,

Fig. 2, is affixed to the waler supports 13 of the strongback construction 12 by lag screws 41 extending through holes 42. The facing comprising the boards 115 is then assembled Iacross the strongbacks as shown in Fig.Y l and the boards are preferably grooved one-eighth inch to form the grooves 35. Each of the boards are predrilled at the position of the strongbacks 12 to receive tie rods 43 extending through holes 43' in the channelshaped bracket 36, hotles 43" in an angular bracket 44, and holes 43' in the bracket or plate 40. The angular bracket 44, Fig. 3, is assembled in position as shown in Fig. l between the top board 15 and the next lower board 1S". These boards 15' and l5" may also be formed with the grooves 35, if desired. The angular bracket 44 is held in its respective position as illustrated in Fig. 1 by wood screws or lag screws or other securing means 45 extending through the holes 46, Fig. 3. Although, as disclosed, the tie rods 43 are preferably two in number, it is also Within the scope of the invention that a single tie rod may be used as illustrated and described in my aforementioned co-pending application, Serial No. 323,528. The ends of the tie rods 43 located contiguous to each strongback construction l2 as they extend through the planking are threaded at their opposite ends to receive securing means or nuts 47. If desired, a compression spring may be positioned beneath the upper nuts 47 and between the plate 4t) in order to adjust the compression for `aflixing the facing of the form. It is within the scope of the invention that the assembled facing may be attached as shown without the compression springs as disclosed in the aforementioned application, but this construction permits the expansion of the facing when wet due to any swelling of the boards, and this expansion may be taken up by suitably slotting the

holes

38 and 38 in the bracket 36. To prevent any bowing of the facing, the facing may be secured intermediate its ends by one or more through bolts (not shown) extending through the facing and through the studding forming the strongbacks 12, being similarly secured by a wing nut as the bolts 37 for aixing the bracket 36. This particular construction is disclosed in the aforementioned co-pending application. Although it is preferredto use two tie rods extending through the facing land located at each strongback as described, it is also to be understood that it is within the scope of the invention that additional tie rods may be positioned intermediate the strongbacks as desired.

The upper dummy she-bolt 23 is mounted as illustrated in the upper portion of the form of Fig. l, and a hole is drilled through the board member or plank 15 at an angle corresponding to the resulting angle at which the she-bolt is positioned and, in this instance, substantially 45, the hole being in alignment with a slot 48 in the angle member 44. Likewise, the bottom channel-shaped bracket 36 is provided with an elongated slot 49 and a shorter slot 50 to receive `and rotate the regular she-bolt 26. The upper dummy she-bolt 23 and lower regular she-bolt 26 are positioned in the space between the vertical studding 13 forming the strongback construction. It is to be understood that if a strongback is used, for example, formed from eight inches by eight inches timber or twelve inches by twelve inches timber, that angularly positioned holes may be drilled within the strongback corresponding to the angular position as shown, or to any angle which is preferred in the mounting of the she-bolts `and tie rods to prevent spring or spalL An upper bin 51 and a lower bin 52 may be formed by aixing boards o-r planks 53 for each bin extending the length of the form. Bottoms of the bins formed between the strongbacks 12 are provided by boards 54 extending between the sides of the strongbacks and affixed in any suitable manner.' The bins as formed are suitable for storing the respective she-bolts used at the top and bottoms of the `form construction, the clamping

brackets

28 and 28 therefor, and the securing nuts 29 and 29'. Also, if necessary, tie rods 22 and' couplings 21 may be stored therein as well as the anchoring means 17 and 27, if desired. However, as the anchoring means are positioned in the concrete lift prior to the setting thereof, these may be suitably located in a portable storage bin (not shown) back of the face of the form.

A suitable scaffolding S may be provided for workmen to use in adjusting the upper and lower she-bolt constructions, and leveling the form-s if a leveling jack is used or other suitable leveling means. The scaffolding preferably comprises angle-shaped members 55 pivoted on pins 56 o-r other securing means aixed to the strongback construction. Planking 57 extending the length of the form and which may also be built in sections is affixed to the angular members 55 by securing means 58. The scaffolding which may extend the full length of the form construction or formed in sections to permit ease in raising or-lowering is held in its raised position by a pin 59. Upon removal of the pins 59, the scaffolding may be lowered to its dotted position S. The construction of the scaffolding S when affixed to the forms may be raised for resetting either in its position as shown in Fig. l or left in its lowered position S. It is also within the scope of the invention that other forms of scaffolding may be used, which may be either directly attached to the form or separately mounted from supporting constructions ailixed to the ends of the tie rods prior to the patching of the tapered openings. When used in this manner, the scaolding is used for cleaning the face of the poured concrete lifts and for patching and iilling of the holes left by the dummy she-bolts.

As an indication of the sizes to which these forms may be constructed, the present form is made to a length of approximately seventy-tive feet and the strongbacks 12 may be placed on four to live -foot centers or preferably on five foot four inch centers with the end strongback spaced on five foot six inch centers. The overall height of the strongback is approximately nine feet and the height of the facing is approximately ve feet three inches to the top from the bracket 36. Forms of this type are utilized for pouring lifts approximately three hundred feet long, and it has been found that a seventyfive foot concrete form of this invention may be readily lifted with three A-frame type hoists of the type Aas illustrated in the aforementioned co-pending application, Serial No. 323,528.

Holes for the she-bolts 23 and 26 may be either drilled through solid strongbacks or formed by the lateral spacing of the studding 13. The holes for the bottom shebolt 26 with respect to the brackets 36 and the upper she-bolt 23 with respect to the bracket 44 are so positioned that they are placed approximately one foot below the top of the pour lifts as shown in Fig.- l. The diameter of the dummy she-bolts is substantially one and three-eighth inches and that of the regular she-bolts is substantially one and one-fourth inches, and the tie rods and pigtails to which they are attached are approximately three-fourths of an inch diameter rods. The length of the tie rod 22 corresponds to the length required between the end of the she-bolt and its respective coupling on the pigtail anchoring means. The pigtail anchoring means to which they are attached is approximately thirty inches in length. However, the lengths of the pigtails may be longer, especially for winter pouring of the low compression concrete with which this cantilever type of form is adapted. The

plates

36, 40, and 44 are preferably formed from plate steel substantially one and one-fourth inches in thickness. The

slots

48, 49, and 50 may vary from substantially one and one-fourth inches to one and one-half inches depending upon the size of the she-bolt which is used. Although the invention has been described with reference to the use of dummy she-bolts and regular she-bolts, it is to be understood that regular she-bolts may be used throughout. It is preferred, however, to use an upper dummy she-bolt to form an enlarged hole in which the bottom regular she-bolt 26 is inserted.

Referring to Fig. 1, the scaolding S which is held '10 in its horizontal position by the dowel pins 59 may be attached to a chain 60 to t-he through bolt 56 toprevent its loss. Upon removal of the dowel pins from the strongbacks, the scaffolding may be lowered to its dotted position S' with the planking 57 below the chamfered edge 61 of the studding. It is also within the scope of the invention that the scaolding may be constructed in accordance with the disclosure of my co-pending application, Serial No. 323,528. The scaffolding may be erected so as to extend as o ne scaffolding across the entire face of the form, or it may be fabricated in sections to simplify the erection and dismantling thereof.

It is preferred to locate the scaffolding as shown so that the she-bolts may be erected from the front face of the form structure, and it is also possible to adjust the scaf- :folding for aligning the form from the front of the form structure. strongbacks for relocating sections of the scaffolding, if desired.

in order to attach the forms to the A-frame hoist (not shown) for raising the forms from the previously poured lift to the next raised position for the pouring of a successive lift, U-shaped hanger brackets may be aiiixed to certain of the strongbacks and hoisting mechanism such as disclosed and claimed in m-y co-pending applications,

Serial No. 233,853, now U.S. Patent No. 2,825,115, granted March 14, 1958 and Serial No. 323,528 may be used.

Referring to Figs. 5 and 6, the improved support or clamping brackets 28 and 28' and the improved adjusting

wing nuts

29 and 29 willV be particularly described. The clamping bracket 28 is provided with a base 62 having a rectangular opening 63 extending along the longitudinal axis of the base, and of a length to permit maximum angular adjustment, in this case from substantially 45 to 90, of the dummy she-bolt 23 or regular she-bolt 26 to its dotted position 23', Fig. 6. Although for this particular improved concrete form construction it is necessary to set the `dumrny she-bolt 23 and regular she-bolt 26 at an angle, the bracket is also suitable for use with concrete form constructions in which the regular and dum-my she-bolts are set at substantially to the face of the bracket 30. The width of the slot 63 is such as to provide sufficient clearance for use with the bracket of either the larger diameter dummy she-bolt and the smaller regular diameter she-bolt. Along the longitudinal ends of the slot 63 there are provided upstanding symmetrically formed anges 64 and 65 having symmetrically positioned

slots

66 and 67 to receive an annular flange 68 formed on the adjusting nut Z9. The size of Jthe solts 66 and 67 is such that in any position off the she-bolt, the wing nut 29 is free to turn in any position of the she-bolt with respect to the bracket 28. l1n order to change from regular to dummy she-bolts wherein the dummy she-bolt is larger than the regular she-bolt, the different size wing nut therefor may be inserted through the front ends 69 of the

slots

66 and 67 as the slots extend through the front edges of the

flanges

64 and 65. 'Ihe

flanges

64 and 65 are provided with holes '70 to receivea cotter key 71, the outer ends of which may be suitably crimped to secure the cotter key in position. Although the base 62 has been shown as being rectangular in shape, it is to be understood that any suitable geometric shape such as square or circular and the like may be used. The bracket is formed from material such as gray iron, malleable iron, cast steel, and the like, and of a size to withstand the particular stresses which are transmitted from the form to the tie rods. It is preferred that the base shall be of such a size as to fully support the bracket in the angular positions of the dummy she-bolt and also in the right angular positions of the she-bolt with respect to the bracket base 30. The bracket is suitably ribbed as at 72 and 73 to further increase the strength of the bracket to withstand the loads supplied thereon. Nail holes 32 are provided where, in certain applications, it

Additional holes may be provided in the 'Il is desired to affix the bracket to` the walers or strongbacks with double-headed nails and the like,

The adjusting wing nut 29 is provided with radially extending

arms

74 and 75 with the arm 75 preferably longer than the arm 74. The wing nut with one lever or arm 74 shorter than the other lever 75 unbalances the nut slightly so that while it will spin on or od better than a single lever nut, its unbalance will prevent any tendency for it to loosen under vibration more than a half-turn, which would place the heaviest lever in a downward position as it is assembled on the form. The wing nut may also be provided with a notch 76 so that upon turning of the wing nut, it may be brought in" alignment with a hole 77 through the she-bolt so that a nail or the like may be inserted so that as the wing nut is turned, the she-bolt is rotated. When connected in this manner, the bracket 28 will move axially with respect to the she-bolt. The end yof the she-bolt may also be formed with a squared end 27 to receive a wrench for turning of the she-bolt.

In the assembly of the dummy she-bolt 23 or regular she-bolt 26 to the form, the wing nut 29 is iirst threaded on the threaded end of the she-bolt and the Wing nut positioned in place in the

slots

66 and 67, after which the cotter key 71 may be secured in place. With this construction, it is also possible to have the bracket and wing nut assembled together, and the she-bolt may be positioned through the opening 63 and threaded substantially to iinal adjusted position. In `assembling either the dumm-y she-bolt 23 or regular she-bolt on the threaded end of its respective tie rod 22, the she-bolt Vmay be tightened with a wrench applied to the squared end 27. After lshe she-bolts have been securely tightened in position, the wing nuts are rotated to adjust the brackets 28 to abut in position against the upper ends of the strongbacks as shown in Fig. l for the dummy she-bolt 23, or against a front face of the strongback as illustrated in Fig. 1 for the lower `regular shebolt 26. If desired, when the form is finally adjusted and aligned, the clamp brackets may be further secured in their iinal clamped position by aiiixing regular or double-headed nails through the holes 32 to the strongback.

When detaching the form 1t] for rmetting the form, the form is irst attached to suitable lifting devices as disclosed in the aforementioned lco-pending application, Serial No. 323,528, and then the dummy and regular she-bolts are detached by rst detaching the nails from the clamp bracket, if nails have been used to secure the bracket in place. The she-bolts are then detached from the threaded ends of the tie lrods by a ysuitable wrench applied to the squared end and after the she-bolts have been unscrewed, if further axial movement is necessary with the bracket held in position, thevwing nuts 29 may be rotated and the respective she-bolts will be pulled axially from the concrete. a suicient amount to permit clearance from the face of the cast slab, the form is hoisted to its new position and the she-bolts reassembled with the regular shebolt aiiixed in place at the point where the dummy shebolt was previously assembled to the respective tie rod. The form is then aligned and adjusted to its iinal set position, after which the hoists are removed and the next successive lift poured.

Although there has been described a particular size of concrete form which may be used with form handling devices such as disclosed and claimed in applicants co-pcnding applications-Serial No. 233,853, now US. Patent No. 2,825,115, granted March 4, 1958 and Serial No. 323,528, together with embodiments of improved alignment means for the forms, the forms may be of any desired length and height and, likewise, the form handling devices used may be so constructed as to manipulate the particular form of this invention, and the form handling device may take any other conventional form of lifting means which is capable of being used" With the she-bolts removed with massive concrete construction. vThe 'forms constructed in this manner are adapted to be dismantled and used repeatedly for the pouring of concrete, and the pivoted scaffolding permits the planking thereof to be nested against the face of the strongbacks, if desired as disclosed in the aforementioned co-pending applications7 to minimize the space required by the form until it is used agm'n and permits the forms to be easily stacked one against another. The scaffolding may also be formed as shown for stacking. The forms are likewise adapted to be used repeatedly for pouring the concrete or for the construction of vertical or battered walls. Similarly, the dummy she-bolts as well as the ordinary she-bolts may be adapted for use with this improved construction.

It is also `obvious that if alignment means and adjustment means such `as disclosed and claimed in my copending application, Serial No. 323,528, are used with the form construction of this invention, they may remain assembled to the respective strongback of the form construction in its dismantled condition and when again used may be readily adjusted for the adjustment of the form in the alignment thereof with a previously poured lift.

Likewise, the dummy and regular she-bolts together with their respective clamp brackets and wing adjusting nuts may Iremain assembled to the respective strong-back of the form construction in its dismantled condition, and when used again may be readily assembled to their respeotive tie rods to prevent spring and spall.

Furthermore, there has been disclosed an improved form construction in which storage bins for the concrete form hardware such as she-bolts, clamp brackets, wing nuts, and the like may be stored contiguous to the point of application and lthat a scaffolding device has been disclosed in connection with the concrete form construction which permits assembly of the concrete form hardware in position.

In addition, the improved form construction in which the boards forming the facing lare grooved perm-its the normal expansion and contraction of the boards from their wet and dry condition, lso that the sheathing will not buckle and the edges of the boards forming the sheathing will be prevented from opening up. The improved construction also permits the clamping of the boards together, if any shrinkage occurs, and, likewise, if any swelling takes place by the absorption of moisture from the poured concrete, suitable expansion is provided to prevent any buckling of the sheathing and any misalignment because of this buckling.

It is further obvious that there has been disclosed a simple and inexpensive concrete form construction, which is readily adapted `for use with conventional concrete formhardware land equally adapted for use with simple form handling devices and anchoring devices as disclosed in the aforesaid co-pending applications, Serial No. 233,853, now US. Patent No. 2,825,115, granted March 4, 1958, and Serial No. 323,528 for the rapid erection of concrete forms as the concrete is being poured. Y

The improved concrete form construction and adjusting and alignment means therefor work equally well on vertical or battered Walls or for the erection of the forms directly to a rock` foundation.

it is also obvious that there has been disclosed an improved form of clamping bracket for use with an adjusting wing nut and she-bolt therefor, which may be used in any adjustable angular position varying within substantially 45 .to 9G with respect to the face of the bracket, and which is adapted for use either with dummy or regular she-bolts for attaching to angularly positioned tie rods or directly to anchoring means such as pigtail anchors and the like.

Itis also obvious that there has been disclosed an improved form construction for the angular mounting of i3 she-bolts using cantilever type forms for forming huge blocks of concrete such as are poured on massive concrete constructions today where a slow setting, low compression concrete has been heretofore very difficult to use, land wherein l`the concrete form construction of this invention prevents spring and spall contiguous to the point of attachment of the form to the concrete.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention; hence, I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described, or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

1. The combination with a concrete form construction including studding and sheathing therefor, of detachable means for aiiixing the concrete form construction to supporting means for mounting and positioning the concrete form construction, said detachable means comprising a dummy she-bolt and ya regular she-bolt spaced apart with respect to the height of the concrete form construction and said she-bolts inclined at an angle with respect to the face of the form less than 90, an angle-shaped bracket affixed to the sheathing contiguous to the upper end thereof, a U-shaped bracket affixed to the studding contiguous to the bottom edge of the sheathing, said dummy she-bolt extending through the sheathing and the angleshaped bracket, clamping means for aflixing the outer end of the dummy she-bolt to the upper end of the studding contiguous thereto, a regular she-bolt extending below the sheathing and `through the U-shaped bracket, clamping means for aiixing the outer end of the regular she-bolt to the front face of the studding, said supporting means including tie means to which the she-bolts are affixed embedded within successive layers, the tie rod to which the regular she-bolt is attached being fully e1nbedded in the prior lift and the tie rod to which the dummy she-bolt is connected being exposed prior to the pouring of the concrete for the next successive lift, and said tie rods so arranged upon setting of the poured lift that the concrete form construction can be detached, raised, and assembled for pouring a subsequent lift of concrete.

2. A concrete form construction including studding and sheathing therefor adapted to be mounted with respect to previously poured and set layers4 of concrete including a plurality of securing means for the concrete form construction extending along the form at each studding and another set of securing means positioned below the first-mentioned securing means and similarly positioned at the bottom of the concrete form construction, said upper securing means including dummy she-bolts, clamp brackets, and adjusting means therefor, said dummy she-bolts extending through said clamp brackets therefor and operatively connected to said adjusting means therefor, said lower securing means similarly including regular she-bolts, clamp brackets, and adjusting means therefor, said regular she-bolts extending through said clamp brackets therefor and operatively connected to said adjusting means therefor, said dummy she-bolts `and said regular she-bolts inclined downwardly at an angle less than 90 with respect to the face of the concrete form construction and substantially parallel to each other, angle-shaped brackets afxed to the sheathing contiguous to the upper end thereof, U-shaped brackets afxed to the studding contiguous to the bottom edge of the sheathing, said dummy she-bolt extending through the sheathing and the angle-shaped brackets, said clamp brackets ofthe upper securing means afixing the outer ends of the dummy she-bolts to the upper end of the studding contiguous thereto, said regular she-bolts extending beneath the sheathing and through the U-shaped brackets, said clamp brackets of the lower securing means aftixing the outer ends of the regular she-bolts to the front face of the studding, and tie means including anchoring means operatively connected to the respective she-bolts with said -anchoring means cast in successive layers of precast concrete.

3. The combination with studding for a concrete form construction for preventing spring and spall on the faces of the precast lifts,.of sheathing adapted to be atiixed to the studding, said sheathing comprising a series of vertically `abutting boards, vertically extending securing means contiguous to the studding and extending through the boards forming the sheathing and also transverse to the length thereof for atiixing the boards together preventing the opening of the joint between contiguous boards formed by the abutting edges, clamping means operatively mounted on the studding, said clamping means including a lower clamping bracket, she-bolt, and securing means therefor with the clamp bracket affixed to the front face of the studding and the sheebolt inclined at an angle to the face of the studding for preventing spring and spall contiguous to the she-bolt on the faces of the precast lifts, said she-bolt extending through said lower clamping bracket therefor and operatively connected to said securing means therefor, said clamping means `also including another clamp bracket, she-bolt, and securing means therefor afhxed at the top of the studding with the she-bolt extending parallel to the first-mentioned she-bolt and at a similar angle with respect to the face of the form, and said she-bolt extending through said another clamp bracket therefor and operatively connected to said securing means therefor.

4. The combination with studding for a concrete form, of sheathing to be adapted to be afiixed to the studding, said sheathing comprising a series of vertically abutting boards, the edges of contiguously abutting boards being longitudinally grooved, securing means extending through the boards forming the sheathing transverse to the grooved edges for affixing the boards together preventing the opening of the joint between contiguous boards formed by the contiguous edges, `a plate member affixed to the top of the studding contiguous to the upper edge of the sheathing, `a U-shaped bracket taxed to the studding contiguous to the bottom edge of the sheathing, said securing means aixed at the upper end to the upper bracket and at its lower end to -the U-shaped bracket, an angle-shaped bracket affixed to the sheathing contiguous to the upper end thereof between the joint of the two contiguous upper boards of the sheathing, said securing means also extending through a leg of the angle bracket,

clamping means including a she-bolt extending transverse to the studding and at an angle inclined to the face of the sheathing with the inner end of :the she-bolt extending below the lower edge of the sheathing Iand through the legs of the U-shaped bracket, `another clamping means at the upper edge of the form including another she-bolt extending transverse to the studding and at an angle inclined with respect to the face of the form, said upper she-bolt extending through the board contiguous to the `angle bracket and the end of the she-bolt extending through a leg of the angle bracket.

5. The combination according to claim 4, wherein the lower ends of the studding beveled at 'an angle with the beveled edge being inclined downwardly, scaffolding oper- -atively mounted on the bottom ends of the studding including support means pivotally mounted on the studding, planking aliixed to the support means forming the scaffolding, and detachable pin means detachably mounted on the studding for positioning the scaffolding in its operative position, and upon withdrawal of said pin means, said beveled lower ends of the studding permitting said scaffolding to pivot downwardly below the beveled ends of the studding in its storage position. i

6. As an article of manufacture, a clamp bracket for a concrete form construction including studding and for operatively mounting a she-bolt at `an angle to the face envases of the abracket at 90 Vto the face of the bracket, said clamp bracket permitting angular adjustment of the shebolt fat an inclination to the face of the bracket less than 90, said clamp bracket formed with an elongated slot through which the she-bolt extends, opstanding flanges contiguous to the longitudinal edges of the slot, each inner face of the anges formed with an arcuate groove, adjustable securing means including an 4annular flange complementally formed to the grooves of the flanges, said grooved flanges permitting the mounting of the annular ange of Ithe securing means, said `arcuate grooves and complementally formed flange permitting angular adjustment of the she-bolt at 90 to the face of the clamp bracket or inclined at an angle less than 90 to the tace of the bracket, said securing means complementally formed to adjustably receive the she-bolt, and said angular adjustment of the she-bolt with respect to the face of the bracket permitting the clamp bracket to be mounted on the vertical face of studding of a concrete form construction and at the ends of the studding to permit the she-bolts used therewith to be positioned at similar angles with respect to the face of the sheathing.

7. As an article of manufacture, a clamp bracket for use with a concrete form including she-bolts and anchoring means and for operatively mounting a she-bolt at 90 to the face of the bracket or inclined at an angle to the face of the bracket less than 90, said clamp bracket including a base member formed with an elongated slot through which the she-bolt is operatively mounted, upstanding anges contiguous to the longitudinal edges of the slot, said inner face of the anges formed with a groove, adjustable securing means including an annular flange complementally formed to the groove ot' the flanges, said grooved anges permitting the mounting of the annular ilange of the securing means, said securing means complementally threaded to receive a threaded end of a she-bolt, and said `adjustable securing means permitting adjustment of the shebolt at 90 to the face of the clamp bracket and at an inclination to the face of the bracket less than 90, whereby the clamp bracket is adapted for use with a concrete form in which the shebolts are mounted at 90 to the face of the concrete form and in which the she-bolts may be inclined at an angle with respect to the face of the concrete form, said she-bolts adapted to be detacliably aiiixed to anchoring means in either of its positions when mounted on a concrete form.

8. As an article of manufacture according to claim 7, wherein said securing means is an adjusting wing nut including radially extending arms, one of said arms shorter in length than the other of said arms whereby vthe wing nut if it becomes loosened will come to rest with the longer radial arm in a lowermost position under the action of gravity,

9. As an article of manufacture, a clamp bracket including a securing means and for -a concrete form construction including a she-bolt and for detachably mounting `and angularly positioning a she-bolt of the concrete form construction `at 90 to the face of the clamp bracket or inclined at an tangle less than 90 to the face of the bracket, said clamp bracket including a base member, an elongated slot thro-ugh which the she-bolt is adapted to extend, upstanding anges contiguous to the longitudinal edges of the slot and formed with arcuate grooves to receive a complementally formed ange of vthe securing means for aixing a she-bolt to the clamp bracket, said arcuate grooves and complementally formed ange permitting angular positioning of the she-bolt at 90 to the face of the clamp bracket or inclined at lan angle less than 90 to the face of the bracket, and additional ribs for reinforcing the clamp bracket and extending substantially from the opstanding anges angularly outward to the peripheral edge of the base member.

l0. The combination with a clamp bracket for a concrete form construction having she-bolts, said ciarnp bracket including a-base member, said base member formed with an elongated slot, upstanding flanges formed contiguous to the longitudinal edges of the slot, each of said upstanding flanges provided with an arcuate and longitudinally extending groove, of an adjusting wing nut, said `adjusting wing nut including a body portion and an annular ilange for detachably receiving a she-bolt with the she-bolt extending through the longitudinally extending slot of the bracket, said annular flange of the wing nut and opstanding anges of the bracket complementally formed with the annular flange and grooves permitting relative angular movement of the she-bolt with respect to the face of the clamp bracket whereby the she-bolt may be positioned with respect to the face of the clamp bracket at an angle of 90 or inclined at an angle to` the face of the bracket less than 90.

il. The combination with a concrete form including sheathing and studding therefor, of a clamp bracket construction for operatively mounting a she-bolt from the face of the studding at 90 to the face of the form or inclined to the face of the form and also adapted for mounting a she-bolt from the upper end of the studding with the she-bolt inclined at an angle less than 90 to the face of the form, said clamp bracket comprising a base member adapted for aixing to the face or to the upper ends of studding of the concrete form, said clamp bracket formed with an elongated slot through which the she-bolt extends, upstanding iianges along the longitudinal edges of the slot, each of said upstanding iiangcs provided with an arcuate and longitudinally extending groove, an adjustable nut including a body portion formed with `an annular ange for adjustably receiving the shebolt, and said annular flange of said body portion of the adjusting nut and said upstanding ilanges of the clamp bracket complementally formed with the annular -lange and grooves, whereby the she-bolt is adapted for mounting at to the face of the form if the clamp bracket is aixed to the front face of the studding and at an angle inclined to the face of the studding if the she-bolt is adjusted at an angle less than 90 with respect to the tace of the clamp bracket when the clamp bracket is atlixed to the face of the studding and to the upper end of the studding. A

12. As an article of manufacture, a clamp bracket including a securing means for a concrete form construction including a she-bolt `and for detachably mounting a she-bolt and angularly positioning a she-bolt of the concrete form construction at 90 to the face of the clamp racket or inclined at an angle less than 90 to the face of the bracket, said clamp bracket including a base member, an elongated slot through which the she-bolt is adapted to extend, opstanding tianges contiguous to the longitudinal edges ot' the slot and formed with grooves to receive a complementally formed flange of the secur ing means for aixing `a she-bolt to the clamp bracket, said arcuate grooves and complementally formed ange permitting langular positioning of the she-bolt at 90 to the face ot` the clamp bracket or inclined at an angle less than 90 to the face of the bracket, additional ribs for reinforcing the clamp bracket and extending substantially from the upstanding flanges outwardly to the peripheral edge of the base member, said grooves extending to the edges of the opstanding flanges permitting entrance of the annular tiange of the securing means, holes provided in each of the flanges contiguous to the outer edges thereof, and detachable means extending through the holes for detachably mounting the securing means within the opposite similarly formed grooves of the clamp bracket.

13. The combination with studding for a concrete form construction for preventing spring and spall on the face of the concrete cast thereagainst, of sheathing adapted to be anxed to the studding, said sheathing comprising a series of vertically abutting boards, vertically extending securing means contiguous to the studding and extending aar/asas through the boards forming the sheathing and also transverse to the length thereof for axing the boards together preventing the opening of the joint between contiguous boards formed by the abutting edges, upper and lower supporting brackets axed to the studding and through which the securing means extends for supporting the abutting boards, said upper supporting bracket aixed to the top of the studding and the uppermost board of the sheathing and said lower supporting bracket affixed to the stud-ding and to the lowermost board of the sheathing for sup-porting the sheathing therebetween and contiguous to the studding, an angle bracket provided with spaced holes in the horizontal ange thereof and a slot in the vertical ange thereof and the horizontal flange operatively positioned between the two uppermost vertically abutting boards, said securing means operatively extending through the holes in the horizontal flange of the angle bracket for securing the angle bracket in position, a she-bolt including a tapered end extending transverse to the studding and through a board of the sheathing and through the slot of the vertical flange of the angle bracket, said she-bolt inclined at an angle for preventing spring and spall adjacent the face of the concrete cast contiguous thereto, an angularly adjustable clamp bracket axed to the upper end of the studding for mounting the she-bolt, and securing means for adjusting the she-bolt and axing the angularly adjustable bracket to the upper end of the studding.

14. The combination with studding for a concrete form construction for preventing spring and spall on the face of the concrete cast thereagainst, of lsheathing adapted to be athxed to the studding, said sheathing comprising a series of vertically abutting boards, vertically extending securing means contiguous to the studding and extending through the boards forming the sheathing and also transverse to the length thereof for axing the boards together` preventing the lopening of the joint between contiguous boards formed by the abutting edges, upper and lower supporting brackets aixed to the studding through which these securing means extends for supporting the abutting boards of the sheathing therebetween and contiguous to the studding, said lower supporting bracket being channelshaped and the edges thereof provided with oppositely arranged slots, said lower supporting bracket aixed to the studding and the base thereof through which the vertically extending securing means extend and vaixed thereto abutting the lower edge of the lowermost board for supporting the vertically abutting boards, a she-bolt including a tapered end extending transverse to the studding and below the bottom edge of the sheathing, said she-bolt inclined at an angle to the face of the studding for preventing spring and spall adjacent the face of the concrete cast contiguous thereto and extending through the oppositely arranged slots of said lower supporting bracket, and a clamp operatively axed to the she-bolt for mounting against the front face of the studding, and adjusting means for adjusting the she-bolt and clamping the clamp bracket to the face of the studding.

References Cited in the tile of this patent UNITED STATES PATENTS 1,042,648 Crary Oct. 29, 1912 1,044,862 Crary Nov. 19, 1912 1,257,827 Emmons Feb. 26, 1918 1,268,880 Roos June 11, 1918 1,393,506 Copeland Oct. l1, 1921 1,938,153 Reeves Dec. 5, 1933 2,084,384 Colt June 22, 1937 2,100,614 Schenk Nov. 30, 1937 2,172,461 Whites Carver Sept. 12, 1939 2,314,866 Bosco Mar. 30, 1943 2,355,376 Huddleston et al. Aug. 8, 1944 2,493,264 Records Ian. 3, 1950 2,620,543 Scharsach Dec. 9, 1952 2,669,000 Seemann Feb. 16, 1954 2,823,441 Williams Feb. 18, 1958 FORElGN PATENTS 510,789 Belgium May 15, 1952 663,435 Germany Aug. 6, 1938,

902,188 Germany lan. 2l, 1954 OTHER REFERENCES Richmond Screw Anchor Co., Ine. Catalog Form-Ty Eng. 1943, page 12, 816-838 Liberty Ave., Brooklyn, N.Y.