US2344841A - Concrete form - Google Patents

Description

March 21, 1944. c, G. WEBER 2,344,841

CONCRETE FORM Filed May 5, 1941 4 Sheets-Sheet 1 March 21, 1944.l I c. G. WEBER l 2,344,841

CONCRETE FORM Filed May 5, 1941 4 Sheets-,Sheet 2 Ff Z lll.. I

March 21, 1944. C, G WEBE'R 2,344,841

CONCRETE` FORM Filed May 5, 1941 4 Sheets-Sheet 5 #79.22. rxmg 47.9 43

6) :I if 0 #I f 675% k7 5 f* m a l 1 l o? if .5v i v JQ March 21, 1944. Q Q WEBER 2,344,841

CONCRETE FORM Filed May 5, 1941 4 Sheets-Sheet 4 Patented Mar. 21, 1944 UNITED STATES .PATENT OFFICE CONCRETE FORM Charles G. Weber, St. Louis, Mo.

Application May 5, 1941, Serial No. 391,854

3 Claims. (C1. 25-13L5) This invention relates to concrete forms for use in erecting concrete structures, such as viaducts and bridges; and has special reference to forms for Ause in the erection of concrete structures supported by metallic beams.

Objects of the invention are to provide improved concrete forms including a number of spaced cooperating portions for shaping concrete beams about metallic beams with monolithic connections providing a wall or pavement formation; to provide means for forming the monolithic wall or pavement formation on the metallic beams to be supported thereby but leaving the metallic beams below and outside of the concrete; to provide means for holding the elements of the forms in assembled relationship and leaving them free for readyv detachment after the concrete has become hardened; to provide forms which dispense with the necessity of using intermediate supporting structure which becomes damaged as an incident to the erection and dismantling thereof according to present practice; and to attain all the other useful advantages herein made apparent by specific mention or otherwise.

This application is a continuation in part, of my prior application Serial No. 284,195, filed July 13, 1939.

Other objects of the invention will appear from the following description, reference being made to the annexed drawings, in which- Fig. l is a sectional view showing a concrete form for making a concrete beam embedding a metallic reinforcing beam and for making monolithic concrete connecting walls or pavements between adjacent beams.

Fig. 2 is a perspective View of a supporting bracket adapted for use in this specific type of form.v

Fig. 3 is a plan view of a slightly modied concrete form for making parallel concrete beams embedding metallic beams and monolithic walls or pavements connecting said beams.

Fig. 4 is a cross-sectiona1 view on the line 4 4 of Fig. 3.

Fig. 5 is a sectional view on the line 5-5 of Fig. 4.

Fig. 6 is a sectional view of a portion of the concrete structure made by use of these slightly modied forms. I

Fig. '7 is a plan view of a concrete form for making a monolithic wall or pavement upon metallic supporting beams.

Fig. 8 isI a sectional View on the line 8-3 of Fig. 7..

Fig. 9 is a sectional view on the line 9 9 of Fig. 8.

Fig. 10 is a detached perspective view of one of the supporting clips or spacers for supporting the hanger brackets above the metallic beams so that said hanger brackets will be entirely embedded in the concrete pavement or wall.

Fig. 11 is a view showing a modification of the form shown in Figs. 7 and 8 for use in making a monolithic concrete wall or pavement formation upon the supporting metallic beams.

Fig. 12 is a view of another modication show-` ing means for holding the supporting brackets spaced substantially above the beams.

Fig, 13 is a view showing the form supported by the lower chords of the beams and for forming the concrete wall or pavement upon the upper chords of the beams.

Fig. 14 is a view showing a variation of the form shown in Fig, 13.

Fig. 15 is a view showing another variation of the form shown in Fig. 13, in which the parts extending rom the lower chords of one beam to the lower chords of an adjacent beam are detachable.

Fig. 16 is a view showing a diierent type of form and supporting brackets therefor for use in making a concrete viaduct above supporting metal structural beams.

Fig. 17 is an enlarged sectional view on the line I'I-Il of Fig. 16.

Fig. 18 is a View showing a type of form including supporting stirrups.

Fig. 19 is an enlarged sectional view on the line Ill-I9 of Fis. 18.

Fig. 20 is a perspective view of one of the supporting stirrups in its relationship to the metallic I-beam.

The form shown in Fig. 1 is arranged to shape concrete beams about metallic beams with monolithic connections between adjacent concrete beams providing a wall or pave-ment formation. This type of concrete form comprises cross mem bers or brackets I having bcndable clamps 2 attached thereto for securely engaging the upper chords of the metallic `beams 3. This prevents displacement of the brackets l and the attached portions of the forms supported thereby. Bolts 4 extend through tubes 5 on the brackets I and through tubes 6 below said brackets, and are attached to side Walls 1 by removable and replaceable fasteners 3. The lower ends of the bolts 4 pass through supporting members 9 complementary to the brackets l and which support the bottom walls IU for the concrete beams. Nuts ll are Screwed on the lower ends of the bolts 4 and may be removed to permit dismantling of the form after its use has been completed. Walls I2 extend across between the walls 1 of adjacent beam forms in order to support the concrete for the pavement or floor monolithically uniting the concrete beams embedding the metallic beams 3.

The walls I2 are supported on the walls 1 and are additionally supported by bolts I3 passing through said walls and through spacer tubes I4 below the brackets I and through spacers I5 above said brackets. `The walls I2 are interlocked with the bolts 4 by notches I2a receiving said bolts.

After the concrete has been placed to fill the beam forms and to provide the monolithic pavement or door construction uniting them and embedding the brackets I and tubes 5 and I5, and has hard'- ened, the form may be dismantled by removing` the nuts I I from the bolts 4 and the nuts I5 from the bolts I3, leaving the brackets I and the metallic beams 3 embedded in the concrete.

In the modification shown in Figs. 3, 4 and 5, metallic beams l1 are placed in position to be `completely embedded in the concrete beams, as .in Fig. 1. Angularv brackets IB are supported upon blocks or strips I9 seated on the upper chords of the metallic beams I1. Bolts extend through holes in the ends of the brackets IiB and, at their lower ends, carry supporting members 2 I complementary to the brackets I 8. Bottom walls 22 are mounted on the supporting members 2| between the bolts 20, and side walls 23 are placed against the inner Asides of the bolts 20 and. upon the bottom walls 22 to provide forms for shaping concrete beams completely embedding the metallic beams I1. Bottom walls 24 are supported bycrossmembers 24' and .by the side walls '23 for upholding the concrete between the beam forms and for forming a thinner pavement or Afloor in monolithic connection with the concrete beams. The walls 24 are interlocked with the bolts 20 by notches 24a receiving said bolts. Above the bottom walls 24, the bolts 20 extend through tubular spacers 25 which remain embedded in the concrete and permit easy removal of said bolts 20 after the concrete has hardened. At desired places, wider walls 25 may extend from the bottom walls 22 to the brackets I8.

After the concrete has been placed in the form thus provided and leveled off or surfaced so as to embed the brackets I8, the formrmay be dismantled and removed by withdrawing the bolts 20. Obviously, this permits removal of all of the form walls. If desired, the concrete beams 25 and monolithic floor connection 21 made by use of this form may be leveled 01T even with the upper surfaces of the metallic beams I1, and thereafter a finishing surface 28 may be applied to the top of the monolithic concrete structure to embed the upwardly extended ends of the tubes 25 and cover the upper surfaces of the beams l1.

The device shown in Figs. '7 to 10, inclusive, is for use in forming a concrete pavement or viaduct upon .but not embedding the metallic beams 29. These beams support the form during the making of` the pavement or viaduct. Angular brackets 33 are seated upon and detachably secured to spaced supports 3l by fasteners 32, The supports 3I rest upon the upper kchords of the metallic beams 29 and support the brackets 39 above said beams so that the concrete may enter and iill the spaces between the brackets and the beams. Bolts 33 extend through the ends of the brackets at opposite sides of the beams 29, through spacer tubes 34 below the brackets, between cross members 35 extending between adjacent beams 29, between longitudinal connecting members 35 attached to the series of bolts 33 along the respective sides of the I-beams 29, and through the connections 31 below the beams 29. The nuts 38 on the lower ends of the bolts 33 constitute means for clamping the parts in rigid relationship against the beams 29. Nuts 39 on the bolts 33 support the connections 36 and the members 35. The form walls 4I) are seated upon the members 35 and, as shown, are in alinement with the upper surfaces of the beams 29. Assembled in this relationship, the concrete may be laid upon the walls 43 and upon the beams 29 to any thick- .ness desired, even embedding the 4brackets 33;

fasteners 55.

and a surfacing, such as the surfacing 28 (Fig. 6),

may subsequently be laid upon the upper surface of the concrete.

Due to the fact that the upper ends of the bolts 33 are screwed into nuts 4I said bolts'may easily be detached and the form disassembled and removed after the concrete has hardened. The beams 29 remain as supports'for the concrete.

In Fig. 11, the brackets 42 are seated upon blocks 43 on the upper chords of metal I-beams 44. The brackets 42 are held in rigid connection with the I-beams by clamps 45 held by detachable fasteners 46. `Cross members 41 are supported by the brackets 42 by detachable bolts 48.- The form wall 45 is mounted on the cross mem bers 41 in any desired relationship to theupper surfaces of the I-beams 44 so that concrete may be laid upon said walls and across theI-beams to form a monolithic pavement or viaduct. The lower chords of the I-beams may support the catwalk members for the workmen. The members 59 may be held in rigid relationship with respect to each other and the beams 44 by releasable clamps 5I. After the concrete has been laid and has hardened, the members 5D may be removed and the formfmay be dismantled and detached by removing the bolts 48.

In Fig. 12, the brackets 52 are held at a desired height above the metal I-beams 53 by open frames or spacers 54 attached to the brackets by 'Ihe brackets may be held in rigid relationship on the I-beams 53 by clamps 55 attached to said brackets and engaging under the upper chords of the beams 53, as shown. The form wall 51 is mounted on'cross members 58 supported by bolts 59 passing through said cross members and through spacer tubes 60 and engaged with the` brackets 52, as shown. After the concrete has been laid, the form may be re moved by detaching the bolts 59, thereby releasing the members 58 -and the walls 59. v'

In Fig. 13, cross members 3| are heldin con nection with the lower chords of the metal I- beams 62 by removable clamps 63. Bolts B4 pass through the cross members GI and are provided with clamping nuts' 65 to hold the clamps 63 in engagement with the I-beams 62. Angular brackets 66 are attached to the upper ends of the bolts 64 and adjustably connected with cross members 61 by removable and replaceable fasteners 68. These devices provide means for using the form in connection with I-beams 62 spaced different distances apart. The wall 69 is supported by the brackets 66 and cross members 61 in any desired relationship with respect to the upper'surfaces of the I-bearnsv 62. 'I'he end member 6I may be supported by'a bracket 10 engaged with a special beam 1I along the side of the viaduct or pavement. After the con'- crete has been laid and has become hardened,

this form may be dismantled and removed bv removing the lower nuts 85 and releasing the upper nuts 65.

Fig. 14 shows a slightly modified type of this expandible and contractible form including cross members 12, bolts 13 holding the clamps 14 in engagement with the lower chords of the metal I-beams 15 and connected with links 16 supporting brackets 11. Cross members 18 of diierent lengths may be attached to the brackets 11 by removable and replaceable fasteners 19 so that the device may be used in connection with I- beams spaced diiierent distances apart. The form wall 88 is supported by the brackets 11 and cross members 18 in any desired relationship with respect to the upper surfaces of the I- beams 15. The form at the side of the pavement or viaduct may be supported by brackets 18 engaged with special beams 1|, as in Fig. 13. After the concrete has hardened, the device may be removed by releasing the bolts 13 in the obvions manner.

Fig. 15 shows a slightly modified expandible and contractible form for use in connection with I-beams 8| `spaced different distances apart. Walls 82 of different widths may be attached to the angular brackets 83 by fasteners 84. The brackets 83 are supported by bolts 85 secured to clamp members 86 by nuts 81. The clamp members 88 may be connected to cross members 88 of different lengths by removable and replaceable fasteners 89. The side form may be supported by brackets 10 engaged with I-beams 1|, as in Figs. 13 and 14. The cross members 88 may be provided with slots 9|! to receive the bolts 89 and adjust the device for different widths. After the concrete has been laid and has hardened, the form may be dismantled by releasing the nuts 81 and allowing the walls 82 to be moved downwardly between the I-beams.

In Fig. 16, the cross members 9| are supported by bolts 92 screwed into sockets 93 attached to the downwardly extended ends of brackets 94. The brackets 94 4extend across the metallic I- beams 95 and are suppported on blocks 96 so that the bottom walls 91 of the forms are approximately even with the upper surfaces of the I-beams. After the concrete has been laid and has hardened, the form may be dismantled and removed by detaching the bolts 92 from the sockets 93 to permit removal of the bottom walls 91.

In Figs. 18, 19 and 20, the bottom walls 88 are supported on cross members 89 having their ends extending into stirrups |88 formed by rods |0|. The rods extend across the I-beams |82 and the stirrups |00 extend downwardly at opposite sides of said I-beams and receive the ends of the removable cross members 99. After the concrete has hardened above the walls 98 and across the I-beams, the form may be dismantled and removed by detaching the cross members 99 from the stirrups |00 in any manner; or, if necessary, the stirrups |08 may be cut and spread apart to permit removal of said cross members.

laid and the forms maybe removed without damage and used repeatedly, thus accomplishing a considerable reduction in cost, as compared with forms which must be destroyed or damaged after each use.

I claim:

1. A concrete form for making a viaduct oi the like that includes a series of laterally spaced metal I-beams extending longitudinally of the viaduct or the like and having their chords along their upper and lower sides; said form comprising brackets extending across each of said beams angular clamps interlocking said respective brackets with both of the upper chords of said respective beams and holding said respective brackets from displacement laterally in either direction across said beams, cross members supported by said brackets and extending transversely across the space between adjacent beamsy and walls supported upon said cross members for sustaining concrete extending monolithically across the viaduct in engagement with the upper chords of said beams and embedding said brackets.

2. A concrete form for making a viaduct or the like that includes a series of laterally spaced metal I-beams extending longitudinally of the viaduct or the like and having their chords along their upper and lower sides; said form comprising brackets extending across each of said beams and laterally beyond the side edges of the upper chords of said beams, parts attached to said respective brackets and having clamping engagement with the upper chords at both sides of said beams and holding said brackets from displacement, cross members extending transversely across the spaces between adjacent beams, elements attached to said respective brackets and supporting said cross members at opposite sides of said respective beams, and walls supported upon said cross members for sustaining concrete extending monolithically across the viaduct in engagement with the upper chords of said beams and embedding said brackets.

3. A concrete form for making a viaduct or the like that includes a series of laterally spaced metal I-beams extending longitudinally of the viaduct or the like and having their chords along their upper and lower sides; said form comprising brackets, walls supported by said brackets for sustaining concrete extending monolithically across the viaduct in engagement with the upper chords of said beams, and parts attached to said respective brackets and having clamping engagement with certain of the chords at both lateral sides of said beams and holding said respective brackets from displacement laterally in either direction relative to said beams.

CHARLES G. WEBER.

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