US1901392A

US1901392A - Concrete form

Info

Publication number: US1901392A
Application number: US472005A
Authority: US
Inventors: John S Frederick
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-07-31
Filing date: 1930-07-31
Publication date: 1933-03-14
Anticipated expiration: 1950-03-14

Description

March 14, 1933. .1. s. FREDERICK 1,901,

CONCRETE FORM Filed July 51, 19:50 6 Sheets-Sheet 1 March 14, 1933.

J. s. FREDERICK 1,901,392

CONCRETE FORM Filed July '51, 1930 6 Sheets-Sheet 2 3mm J EFrecZaricA a w 6% 6 I v F5 6 a 2 7 6 a y a /w March 14, 1933. 5 FREDERICK 1,901,392

CONCRETE FORM Filed July 51, 1930 6 Sheets-Sheet 2 March 1933' Q J. 5. FREDERICK Y 1,901,392 I CONCRETE FORM Filed July 31, 1930 6 Sheets-Sheet 5 1 27.15. F29. 15.

M /76 79 V \W I [Ill 79 March 14, 1933. 4,5 FREDERICK 1,901,392

CONCRETE FORM Filed July 51, 1950 e Sheets-Sheet 6 I 8mm .H L. 5'. Frederick 87 abroump Patented Mar. 14, 1933 1 we e; ems-nee; rm snmm r Lpplicetiom flled' July- 81;

This invention relates toQc ncr ete. forms and more particularly to molds or forms by use of which buildings ofthe poureclconcrete type-ma be erected. 7

. One ject of the-inventionisto protide' a-formorl-mold ottheknockdown :type which may be very. easily ecected and. through the. use of. which various perts-ota-building may be molded andvthe mold. taken apart after the concrete has set. and .again set up for Anotherob'jectvof theinvention is to: so.

form'the elementsconstituting the'improved form or moldthat they maybe useddor.

15 straight-wall sections or. for forming corner portions of a. building and fnrtherlto so,

construct; the sections that a; corner portion. of. any mgledesired-may be moldedend. alsoihave a. portion of a wall heingimolded. eittend either pcrpendicularlyor at an; in

- Anotherv ohject oi the invention is tier mit aowall to 'be iormed of aneverr thic'k-- ness throughout JtS' height or have -a-,pordon-reduced in thickness towards its top...

Another objectof the; invention to so form sections or elements of the mold that they may be used to form either, an inside or outside wall of a. .mold,- thereby causing erected. I v Another ob ect of the invention-ism pro.- vide improved "joints for use at] ,cormars2 of;

7 Another object of thcinvention iseto pro-1 v'ide themold 1 with fillers :adapted 'lto-obe' set length in case sectionsof 'a' regulation length; are toolongor-too short-i Another object of the invention is to not; only allow w all's'fto be molded lint also ptirtitions of a building, and'lin addition p'erinit doors andf windows :in'diin'side trim .to'h l prpvidedifqr. V V i v: I Another hjectof thein nfi n me l w panying drayvings, wherein this invention,

theiaections tobe interchangeable and facilt tating-the-ease with which a. mold. may ,-be-

a building and: to .so 'iorm these joints; that. the mold forming sections may he; disposed;v indesirednngular relation to each'other. r 1

' in prlace in orderto'for-m a noldlof a'desi'red 1930. Serial No. 472,005.

allottpsi fling strips'to hesetin ti aeiiduiin moldin ofawall.

I Ano er object of the invention isftohot only ellow the forms tolie usedfor molding.

wallscffe biiilding but also permit themto. 55

be ,used for molding chimneys, fire walls and} other portionsfof e building suchles'posts, columns, floors, ,roofs or casings for struce: tural beams. i

The invention is illilstreted in the ,Eigure. a perspectiveview of a'f nortion of a inold formed in aceordence. I witli Fig. 2 I is a horizontal? sectional View through an inner wall of a. mold formed: in accordance with this invention, I

. 3;is a perspectiye .viexyvv of sjbracket for connecting sections at corner ofI.the. i: T

Fig. 4; is apetspective; viewof'a modified form of c "rnerlbracketallotting angular eds,

justinents, V v v o Fig. 5 is. at perspective ,lview of another modified former cornerbra-cket, 7 if;

Fig. 6 'is 'a perspective 'view'of-I e; corner bracket so constructed that. portionsthereof may; have: universal movement relative to each other, i

,Fig. {is a viewopertiallydin elecation 183' partially. in section often. modified-form of moldc zwellferec'ted ,in accordance. with. this invention} '1 Fig. 8. is .t p ,1a.n View oflthe inold wall showngin 7, I

Fig, 7 9 is e horizontall sectional view taken. qn helin Ic g 7 1. .v

Fig flq. is eillfpe'spective,View ofya filler used whenlerecting the moldshown in Fig; ,7, I :11 is a perspective iew of another fillerconstitiiting partfof the moldishown' in 1 Fig. l2]is.a...perspectii e View of. a filler hichissometvhat similar, to that disclosed inFig'; 11 but of 'amodified-constructi on,

Fig. :13 is a se'ctional View showing the manner of erecting a moldto .forrnza Window;

opening itindfadj oining portions of, a Wall,

Fig. .1i s tLv i Wv takcnon the line 14-44 iFi -l' s yh w n t m n e i whi boards, or veneering or a joists are secured in proper spaced relation during forming of a wall,

Fig. 15 is a bottom plan View of Fig. 14, Fig. 16 is a sectional View showing the manner of forming a door opening in a wall,

Fig. 17-i's a view in endielev'ation looking from the left in Fig:16,

Fig. 18 is a sectional view taken vertically through a Wall during-construction ofthe,

same,

Fig. 19 is a view in end elevation shtn ving the manner of forming a wall mold which tapers upwardly, Fig. 20 is a View showing in end elevation spacers to be disposed between walls of the mold, Fig. 21 is a side elevation showing the manner-"in which mold sections are to be erected-in order to form a Wall having a sloping end, I p g Fig. 22 1s a perspect ve View of a wall formed in accordance with this invention and hav ng atapered or sloping corner p'ortion',

Fig. 23 is atop plan view"'showing' the manner in which mold sections are erected to form a chimney.

Fig. .24; is a perspective viewxof a cleat used when mold sections are erected as shown in Fig. 23, 1 1 Fig. 25 is a verticalsectional view taken transversely through a portion" of a'w'all formed in accordance with this invention, F 1g. 261s a sectional V ew showlng'. the

manner in which 1am upper portion of a fire wallor other walls may be formed in erected and filled with concrete, lower molds being. "removed after the c ncrete has, set and placed upon upper 'molds "which are filledwithconcrete inthe process of'sett'ing. The inner wall of the mold is indicated in general by the numeral 1 and the outer wall by the numeral 2 and each wall consists of sections 3 which maybe of any length desired and also of'any height. Bars 4'extend longitudinally of each section andare connected by a suitable'number of cross bars 5', thereby forming a frame to which'a facing 6 is secured" and this facing maybe formed of sui ab e c mp iplan View showing'rhold partition for a perspective View of a corner tion. The sections 3 are all of the same construction and may be used to form either an inner or an outer wall and when in use may have either bar 4 uppermost. Cleats or connecting bars 7 are secured to the bars 4 of one section by bolts 8 which are passed through-f slots 19 {formed "in the -'cl 'eat's and may be "passed through'slots 10 01 openings 11- formed through the bars 4. The outer ends of these cleats overlap the bars 4 of a companion 'or'"- meeting section and are wformed-;cwith slots 12 through which are passed bolts 13 and these bolts are engaged t-hrough'slotsor-openings of the bars 4 of the companion mold section in order to secure the two sections -together. 'lherefore',:the

- two sections may form 'c'orner portionsof an outer wall 'ofiamold. Afiller 14; carryinga facing'sheet of metal 15 'is'set in place, as

shown in F igure1, in order to complete-the corner and it should benote'd that the facing sheet"proj'ects' at one or both sides of thefiller in order to form a smooth joint. -A' cross 1m 1.6 extends transversely of the filler 14.- with its ends projecting from-oppositesides thereof and this cross bar has its ends formed with notches 17 through which bolts or otherfasteners-may be passed in orderto firmly hold the filler in engagement with the niain wall section; When the wall sections-"are used 'to'form portions of a mold' intermediatethe corners of a wall of'a building,' the wall sections are disposed in end to end relation to each other in which case the bars 4 extend 1n longitudinal ahnement with the cleats 7 overlaplping their adjacent ends where they are firi'n y secured-bytightening'the bolts 13. The filler 14 willflbe set in place with its facing l5 overlapping= ends a #0 1 joint between the wall-sections."="

he inner wall 1 ofthe' mold is'formedof' sections-havin the same construction :as

of the facings'tl of the mold sections toform those from WlllCllthB outer wall is formed and a filler 14 maybe 'setfin place-if found necessary. The rejecting side portions: of

the filler facing s eet 15 permits the sections l tobe spaced from each other a s'uflicient dlsta'nce toallo-w for exp'ansion-and contraction and further permits an inner wall to be short ened for easy removal- At theintersection of the wallsforming sections; there is disposed a corner piece 18 having leaves extending transverselyeofeachaother eitherat right anglesior any "other angle desired according tothe angular relationv which one wall of a;' building is to have to another .wall thereof.

If "so desired, this corner piece may ;be formed, as shownin Figure 30,. of leav es 19 of metal having hinge ears through which is passed a pin 20 in order to form a hinge joint 21. By this arrangement the leaves of the" corner piece may be disposed in any desired angular relation to each other. Tongues 22 extendfromends of the leaves to engage over barsptj .the wall-s'ectionsi and support corner-piece. 1V

At a 'c'orner of -a'building the sections ofthe inner wall ot the 'mold'are'iconnected by brackets secured to the bars 4 of the mold sections. These brackets may consist of" posed at any angle desired; In some instancesyit'ls desired tohave the leaves of the bracket disposed out of a common plane in order toobtain a good fit in which case the" bolt 30 may be-removed and the leaf'at the right in Figurel'inverted orset'inplace be neath the reduced end of the companion leaf; It'will thus be seen that the relation of the 5 le'avesto each other may be considerably variedi V 4, 1

Instead of forming the brackets of leaves which are 'pivotallyconnected, the bracketsmay be of a rigid formation, such as shownin Figure 28, where :the brackets; indicated by the numeraIBO, have fbeen'employed to connect mold sections at the intersection of aniainwall of abuilding with one end of a partition wall. yThesei bracketsj have their leaves formed. with longitudinally extending slots 31 to receive "securing bolts and also receive bolts 32bymeans ofwhich feross bars 33" of sa partition 33 may be 'securedvto the brackets in order that a portion of a dividing wall o fabuildingmay beformed; e The bracket? shown in Figure 5 consists of leaves. or-arms 34' and 35ach ofwhich is formed with a longitudinally extending fastener-receiving slot 36 Abearing 37 is pivotally connectedwith one end ofthearnr 35 by a steinor swivel 38,.and the bearing37 its intoa recess-39- formed in the: leaf 34: where it-ismounted upon a pivot pin- 40. Bythis arrangement-the leaf- 34 may be se'- cured to one wall section andthe leaf 35 disposed in. the'same plane as the leaf 34 atright angles thereto to take the place/ 0f the brackets shown in Figures 3,4 and 28,01 this'leaf may be swung upwardly aboutthe pin 40- and if necessary turnedabout the stem 38 in order. to dispose the leaf .in desired angular re ation to the leaf 34.; Itwill thus be seen that a mold SfiQtlOIlrtO whichthe leaf. 35 is attached may-be disposedat an incline in 1 5 steadoiperpendifiularly Disposition of." a

mold section v at a desired aiiiclineor angle may alsobe'accomplished' by use-ofsuch a bracket as lS"'Sl1 0WIl' in' Figure "6;; In'this form the leafll carries'an' eari4c2 which pro jects from one endiandto this earis piv'o-tally attached a 'beai ingf43 by a screw or bolt 44. Theleafl lfi is connectedwith the bearing 43b a sleeve -46-having a steiir l'? rotatablyen gaged 'throughone end of the leaf and since the 'sleeive'46 is secured between ears 48' of the bearing bya pivot pin 49:, vit may have turning movementabetween these ears.

By 'havingithe bracket constructed as shown inrthis figurqthelea'f may be swung horizontallyrrelativeto the leaf lland also ver-.'

tically about the-pinl49 as-well aspbein'g turned about the stem-.47; Therefore, accurate adjustments may be made and a .mold' section disposed in alinement with or transversely of another mold-section HIId'FZllSO disposed either perpendicularly or at anincline.

In some cases-a-wall to be erected is of such length that lwhena'inold.is'set iup itis found that an} end of'a mold section? terminates close toa companionmiold section but 50 and: the adj'acentlend of the mold sectionwhichlis closed byazfiller 53 formed of sheet metal r By this arrangementthe bolts which secure theacleats: in place may 'be' released after the concrete :wi'thwvhich the mold is filled has setandsufficient movement will be permitted to allow theiinner wall of the mold tabetakianapart; Thefill'er 51. shown. in Figure--12 'is similar-to that shown in Figure 11,-exceptthat it consists of upper and lower '90 notn'earenough to permit a'pioperjoint to sections having contacting". arms '54 through whichpass asecuring bolt' 55; By this air-- rangement thesections ofthe filler may be takerrap'art and used for other purposes.

In some cases'the' buildingto be erected is of :such size that the builder does not have suiiicientmold forming sections toextend the full length of a wall. In such casescorner sections: are formedrand between inner and outer walls ofithe mold are erected-spacing partitionsw56. Eachof these partitions con- I sists of'sections 57 di=sposed vertically and secured inedge to edge engagement with each other by .a suitable number of cross bars or cleats "58 which are releasably secured by screws, as shown in Figure 29 Strips-59 ex tend longitudinally of the sections 57 at the v opposite:sidesthereof from the cleats 58 in order to form a recess in a cement partition or end wallsection-formed in themold and a suit-V ment'there'is-a smallspacebetween the filler V able number of'rods 60 having bent ends 61 are disposed through thepartition longitudL- nally of the mold in vertically spaced relationto each other. After the corner portion of the wall has set, the mold is'taken apart and the sections then disposed along the. proper lines to complete the wall between 1ts corner portions. If the mold be long enough to connect the corner portions of the wall, the spacing partitions may be omitted but if the mold is of-less length the partitions will be again used. Since the corner portions of the wall will each have a recess in each end and anchor rods projecting from it, the-connect ing wall section will have portions extending into-these recesses and the extended ends of the anchor rods win be-embeddedt in the conof the leaf 63 where itis pivotally mounted by means of a boltor other suitable fastener- 66 and slots 67 are formed in the leaf 64 to. receive securing-screws 68. The leaf 63 is of greater width than the leaf 64 and in its side portion which projects beyond the leaf 64 isformed with a slot 69 to receive securing screws 70. By this arrangement the mold sections may be disposed .in the rela-.

tion of each other shown iii Figure 27 if found necessary; i a 1 In' Fig. 18, therehasbeen shown a wall of concrete having a suitable number'of ver-' tically extending reinforcements 72 and transversely extending .reinforcements 7 3 consisting of metal strips which may be wrapped about the vertical reinforcements if so desired." Each reinforcement consists of a number ofpipe sections connected by conplings 74 but it is to be understood that separate pipes or bars may be used. The metal strips serve to firmly hold the inner and outer forms in proper spaced relation to each other, thereby causing the wall-to be properly moulded and a perpendicular wall formed. Gauge strips may be set in place between the forms before securing the strips 73 to the forms in order to insure proper spacing of-the forms. The metal strips 73 .in addition to serving as transverse reinforcements I and braces for the inner and outer formsalso constitute supports to which nailing strips 75 of wood, to which inside trim of a house is to be secured. ma v befastened by. small nails 76. These strips 7 5 are secured to the strips 73 by I the nails and set in place after the mold seetions 77 are erected and the strips preferably carry small nails 78 which will be embedded in the wall and prevent the strips from working loose after the wall has been completed.

The bracing strips 73' are initially of such length-thatthey may project beyond the mold sections and havetheir end portions split to form tongues 79 which are-bent to,

engageouter side faces ofthe longitudinally extending bars of the mold sections. By this arrangement the mold sections may be held in proper engagement with each other as successive tiers of mold sectionsare set in place.

tion to the bars82, thereby forming the fire Wall with ahead or coping 84 which projects at opposite sides of the fire wall.

In Figure 25, there has been shown a wall '85. The vertical reinforcements 72 are omitted but metal strips 86 extend transversely in the mold between its walls 87 In this embodiment of the invention, the strips 86 extend across themold in spaced relation to upper edges of the mold walls and are then bent upwardly, as shown at 88, and outwardly, asshown at 89, with their, ends se-' cured, against side bars 90 of the mold by easily removable nails '91; After the concrete has set, themold is taken apart and the projecting ends of the strip 86 then bent to extend outwardly from the wall, as indicated by dotted lines. The sections of the mold are then set up with their lower side bars resting upon the projectingends of the strips which may be tacked to the sidebars of the mold sections. By this arrangement a portion of the wall previously formed will extend upwardly into the mold, thereby insuring proper positioning of the mold sections. 7 InFigure 21, there has been shown

mold sections

92, 93 and 94 which are assembled to form a wall which may have one or both ends disposed at an incline. In this formation the mold'section 93 is connected with one end of the mold section '92 by a bar 95 secured against the lower side bars of the. mold sections by bolts 96, the upper end of the mold section 93 being secured by a bracket having leaves 97 secured to the mold sections by bolts 98 and having their adjacent ends pivotally connected, as shown at 99. The upper section 94 may be secured to the section 92 by a suitable number of clamps 100. -Sections, such as shown in this figure, are em ployed in order to form the upper portion of a wall of a'house having a sloping roof. -iTheiwalll-Ol shown in Figure 22 is reduced in thickness toward its'top and formed with a tapered or sloping'corner post 102. When forming thistype of wall which may be a portion of a building or a retainer wall or garden wall, the mold sections are set up, as shown in Figure 19. Referring to this figure, it will be seen that the mold sections 103 have wedges 104 disposed beneath their lower except that they are split l'ongitudinally' to forrn' sectionsIOfi and-108. III-ease the wall i'sto be of anjeven' 'thicknessthroughout its height, the spacers will each consist ofa

section

107 and 108 but if the wallis to taper upwardly eachspacer'willconsist of the sec'-. tions 107 v or the'sections 108 and'these sec- .tions will be'placed-side by side, asshown in 1 Figure l9, with their perpendicular side edges contacting and their inclined side edges disposed outwardly. -Wliensodisposed,fthe outer side edgesof fthe spacers will converge upwardly.

In Figure 23, there has been shown an assemblage whereby a short wall, chimney or the like may be molded. In this assemblage the mold sections are ofsuch length that they cannot be disposed with their ends intersecting and form walls'of the proper dimensions. It is not desired to cut the sections and, therefore, each is disposed with one end bearing against a side face of a mold section and its other end portion projecting. Cleats 110 are secured against the upper edge faces of the mold sections by screws or other fasteners passed through openings 111 in the cleats and these cleats project from the mold sections and are formed with heads 112 dis-- posed in a vertical plane and adapted to engage the mold sections and retain them at right angles to each other. If so desired,

certain ofthe sections may have their ends intersectlng and connected as previously set forth. 7

When a window opening is to beformed in a wall, the assemblage shown'in Figures figure, it will be seen that the floor joists 113 have their ends embedded in the wall and rest upon a lower wall section previously moulded. Strips 114 extend transversely through the wall with their inner end portions nailed to the side faces of the joists and their outer ends extending and engaging beneath the lower bars 115 of the outer mold section 116. The inner'mold section 117 rests upon the joists and the joists are secured in proper spaced relation to each other by spacing plates118 which are secured to the joists by clamps 119. The plates overlap between joists and are formed with longitudinally extending slots l20through which bolts 121 are passed. By this arrangement the plates may be adjusted in relation to each other and the joists secured in desired spaced relation. The

mold sections

116 and 117, used when forming window openings, are of a different construction from those used for other portions of a wall. The section 116 carries bars 122 which are disposed vertically and have reduced ofiset upper end portions. 123 and to these upwardly extending portionsis secureda board 124 spaced from the upper'bar 1250f the moldsectionby a bar 126. This barf 126 is-of'a depth similar to'the' bar 1 and. "cooperates 1 therewithso "that an outer sill'12'Z for a windowopening may beforn'ied" "and project fromthe wall of the building the :necess'ary distance. The inner mold section has a port on 128 ofiset inorder to form arecess-or-depression'129 iii-a wall beneath a When' forming adoonthe moldse'ctions 133 and iearerming walls Of tlle meld, are i set up as shown in F igure 16; and after "a door frame 135 -has been. setjin places metal securing strip 136is passed through the doors "waywith its ends" extending jbetweeiflongitudinally extending bars'137' of the mold sec tions where it is secured by bndingit's ends,

as sho'wn at138:} Cleats'j139 are secured to {the bars 13165 the sectionsforming the inner wallet the meia'aneeverlap the door frame I I in order to hordme doorirame' firmly in l plae where it will serve asan end wall. for

the mold duringsetti'ng-of the concrete. A

P-filler-Strip 140mm} be set *iriplacelif found ineeessai'yv "Itsh'oirld beno't edtliat the fac- "mg ofthe inner moldwall 134 may slightly 5 overlap th'edooriiframe, thereby fcausing the doori'frameto 'project inward lyf'a slight ex LtentI-ffBy this arrangement plasterin ay be applied totheinner" surface of the walliwithout projecting beyondthe dooififrameu A' brick building is more expensivea-iidnot as strong or as weather resisting as emcreeeeaur wantedan'outercourse i may be built and an inner form" then erected- .j

13, 14 and 15 is to be used. Referring to this a fl the i t rv i pi n' a h o "1 05 *crete." This-makes a stronger wa'llthan solid "brick. In a cellar'construction an inner form r caa' beser up and spacej'betweenfthe" form d the f We ls Of (th ce a fi l i h f concrete;

I have, therefore,aaaadmaa through.

the use of which ureae n ra building may be erected and not only fwalls' formed fal'so d'oor and window openings; .1 have, li furtherprovided a set of molds of such constructiion that walls ,ina-y extend. in f desired angular relation. to each. other in order vto l form bay windows and have further provided whereby fire w'alls, chimneysand otherv 'i portions oi} a 1 house 1 or building 1 may be 'i;;for1 ned.'- I have furtherprovided aset of ;molds. consisting ofsections which may be ;;walls: each consisting of section's having 1 1a, including longitudinally extending iso bars, bars to connect ends of said sections extending between adjacent ends of the sections and overlapping ends of the frame bars, the bars being formed with longitudinally extending slots, and fasteners passed through the slots of the bars to slidably and pivotally connect the bars and releasably secure the sections in set positions.

2. In a building mold a bracket to connect mold forming sections, said bracket having arms pivotally connected to each other for movement in horizontal and vertical planes, the arms of said brackets being formedwith longitudinally extending slots whereby tlie arms may be secured'to end portions of mold forming sectlons.

I 3. In a building mold, inner andouter. walls each consisting of compan1onsect1ons, 63011860131011 havlnga frame 1nclud1ng longitudinally extending bars, a facing carried by 7 .said frame at one side thereof, means adjustably connecting adjacent ends of comto mold sections longitudinally thereof, one

leaf having a recess leading from one side edge,and a bearing pivoted in said recess and having a shank swiveledin the other leaf. 7. In a building mold, a bracket for con necting ends of mold forming sections, said bracket having leaves adapted to be secured to moldsections longitudinally thereof, one

leaf having a tongue extending from its inner end, a hinge block pivoted to said tongue for turning in a plane parallel to the tongue, and asleeve hinged to said block and having a shank, swiveled to the inner other leaf raxially thereof. In testimony whereofl afiix my signature.

JOHN S. FREDERIGK.;

end .of the panion sections whereby the sections may-be a I set up in determined angular relation to each other withtheir facings disposed inwardly, and spacers disposed vertically in the mold with their side edges contacting with said walls, each spacer being formed of mating separable side sections having contacting side 5 edges formed with registering grooves forming openings through the spacer, and tie rods disposed in the grooves through the spacers longitudinally of the mold and projecting from the spacer whereby to be embedded in,

plastic material when the mold' is filled.

4. In a building mold, inner-andouter walls each consisting of companion-sections,

' edges recessed whereby tie rods may be disposed through the spacer longitudinally of l the mold and embedded in 7 when the mold is filled plastic material 5. In a building mold, innerand outer walls each consisting of companion sections,

means to connect said sections to formjwalls,

1 and spacers between said walls disposed transversely thereof with their side edges contacting with inner faces of the walls, each spacer being formed of matingt'ransversely separable side sections having contacting side edges recessed'wher'eby tie rods may be disposed through the spacer longitudinally of V the mold and embedded in plastic material when the mold is filled, vertically extending strips being provided on the spacer sections in abutting relation and forming a recess in one end of a wall section formed in the mold. 6. In a building mold, a bracket for con ne'cting endsjof mold forming sections, said bracket having leaves adapted to be secured