US2028647A - Form attaching supporting means - Google Patents

Description

Jan. 21, 1936. S s, COLT I 2,028547 FORM ATTACHING SUPPORTING MEANS Filed Jan. 9, 1934 2 Sheets-Sheet l INVENTOR 5077211625 CoZZ,

.Fan. 21, 1936. s. s; COLT FORM ATTACHING SUPPORTING MEANS 2 Sheets-Sheet 2 Filed Jan. 9, 1934 INVENTOR akin/6Z5 C058,

ATTORNEY Patented Jan. 21, 1936 nnirao sTATEs ATENT OFFICE 9 Claims.

This invention relates to devices for retaining concrete casting form walls in assembled relation to structural steel, when it is desired to imbed the latter in concrete; and the invention has reference, more particularly, to means for retaining forms in operative relation to I-beams, girders, columns and similar elements entering into the construction of fabricated steel buildings and.

similar structures.

This invention has for its principal object to provide a simple and easily applied means for attaching form walls in spaced and enclosing relation to structural steel elements; the novel means for this purpose being adapted to be easily and quickly adjusted along the element with which it is engaged, and being capable of assembly therewith from above, if desired, whereby the operations of attaching form walls are greatly facilitated.

Another object of the invention is to provide in connection with the form wall supporting means, parts adapted for spacing the side walls of the form relative to the structural element about which the same are assembled, said latter means being adjustable by bending to reduce the distance of spacing, or to remove the spacing means from service should this be desired.

Another object of this invention is to provide a novel form wall attaching means including a bottom form wall supporting member having means to engage an attachment bolt so as to in terlock the head of the latter therewith, to thereby prevent relative movement between the member and the bolt.

Another object of the invention is to provide a novel form wall attaching means having members adapted to so engage the structural steel ele ment with which it is engaged that the attaching means is stopped against relative or like displacing movements.

Other objects of this invention not at this time more particularly enumeratedfwill be disclosed in the following detailed description of the same.

Illustrative embodiments of the present invention are shown in the accompanying drawings, in which:--

Fig. 1 is a transverse vertical section of aconcrete form as operatively applied about an I- beam and retained in operative relation thereto by one type of attaching means according. to this invention; and Fig. 2 is a longitudinal vertical sectional view, taken on line 2-2 in Fig. 1, the cast concrete being omitted. Fig. 3 isa top end view, Fig. 4 a longitudinal sectional View, and

Fig. 5 a bottom view of an attaching device, such as shown in Figs. 1 and 2, these views being drawn on an enlarged scale.

Fig. 6 is a transverse vertical section of a concrete form as operatively applied about an I- 5 beam and retained in operative relation thereto by a modified type of attaching means embodying the principles of the present invention; and Fig.

7 is a longitudinal vertical section, taken on line 1-"! in Fig. 6, the cast concrete being removed. Fig. 8 is a top end view and Fig. 9 a vertical 1ongitudinal section of the modified type of attaching means shown in Figs. 6 and 7, these views being drawn on an enlarged scale.

Similar characters of reference are employed in the above described views, to indicate corresponding parts.

Referring to the drawings, the reference character I0 indicates an I-beam about which it is desired to mount a form for casting concrete in enveloping relation to the same. The form comprises a bottom or transverse wall II and side walls [2, all suitably spaced from the beam according to the dimensions desired with respect to the concrete mass in which the beam is to be imbedded. The novel form wall retaining or attaching devices are adapted to engage with the flanges ll! of the beam Ill, so as to support the form in suspended relation therefrom.

One type of retaining or attaching device embodying the principles of this invention is shown in Figs. 1 to 5 inclusive of the drawings. Each retaining or attaching device of this type com-, prises a hanger member I3 of cylindrical form having an axial bore I 4. The lower portion of this bore is smooth surfaced while the upper I4 is internally screw threaded. Integral with the upped end portion of the hanger member l3, and projecting laterally from the inner side thereof, is a horizontal suspension lug or ear l5. Integral with the upper end portion of the hanger member l3, and projecting laterally from the outer or opposite side thereof, is a spacer stop I6. This spacer stop It may be reenforced by a central tapered Web 16', but notwithstanding such reenforcement the free end portion of said spacer stop I6 is bendable so that the same may be foreshortened to reduce its effective spacing length, or even bent down to an out of service position in cases where its spacing effect is not desired. To facilitate the bending of said spacer stop for the stated purposes the free edge of its web I6 is notched at intervals as indicated by reference numeral. ll. For a portion of its length below ll filo'cation of the suspension lug or ear [5, the

inner side of the hanger member 43 is cut away, as at l8, coincident to its bore I4, thus allowing a hanger bolt when operatively associated therewith to be disposed close to the margin of a beam 5 flange to which the hanger member is applied in use, whereby tendency of the hanger member, bolt and associated parts to tip or cant out of desired perpendicular is diminished. Integrally connected with the opposite lateral sides of the hanger member I3, for extension therefrom in opposite directions parallel to the beam flange to which it is applied, are initially horizontal but downwardly bendable keeper projections or arms I9. These projections or arms I9 as thus arranged are preferably located in a plane either coincident with or somewhat above the plane of the suspension lug or ear I5. The reference character 28 indicates a hanger bolt having a threaded free end portion 2! and a head 22 of polygonal form at its opposite end. The reference character 23 indicates a washer-like supporting member which is centrally perforated, as at 24, to pass upwardly therethrough the shank ofthe hanger bolt 20. The head of said hanger bolt 20 is 5 stopped against the outer face or underside of said supporting member, and integrally formed with the latter to project from such face or side are laterally spaced flanges 25, between which said bolt head is lodged and by which the same is engaged to retain the bolt against axial rotation relative to the supporting member 23. Said flanges 25 are provided at their outer ends with bendable ears or retainer lugs 26 which, after the bolt 20 is assembled with the supporting member, are inturned over the head 22 of the bolt, to thereby retain the latter in assembled relation to the supporting member and against longitudinal displacement therefrom.

To apply the novel retaining or attaching devices to the I-beam ID for supporting the form walls, the hanger bolts 20, as assembled with the supporting members 23, are thrust upwardly through openings 21 in the bottom wall II, and the supporting members 23 are temporarily secured to said bottom wall II by nails 28, which are inserted upwardly through nail openings 29 and driven into said bottom wall. If desired, the supporting members 23 are provided adjacent to the margins of the nail openings 29 with nail stop projections 35 with which the heads of the nails engage (see Fig. 1), thus spacing the nail heads from the surface of the supporting member 23-, -whereby the same are more easily accessible to the claw of a hammer when it is desired to draw the nails to remove the supporting members and bolt from the bottom wall I I after dismantling a used form. After the supporting members and bolts are connected with the bottom form wall I I, preferably spaced longitudinally in pairs, the wall I I is temporarily suspended, by ropes or the like, beneath the I-beam III, with the threaded free end portions of the bolt shanks respectively extending across the opposite margins of the bottom flanges I 0 of the beam. The hanger members l3 are thereupon slid over the bolt ends and the threaded portions I4 turned downwardly thereon until the suspension lugs or ears I5 are engaged upon the flanges Ill. The adjustment of the hanger members I3 on the bolts will determine the spaced relation of the bottom wall relative to the beam. Once desired adjusted position of the hanger members is attained, the keeper projections, or arms I9, which are initially horizontal, are bent downward across the margins of the flanges Ill (see Fig. 2), thus preventing rotative displacement of the hanger members from desired adjusted position, and assuring proper outward projection of the spacer stops I6. The side walls I2 are now put in place, being supported at their lower edges upon the bottom wall II, and held against outward displacement therefrom by stop strips 3| with which said bottom wall is provided. The side walls are pressed inwardly until engaged by the spacer stops I5, whereby the desired spacing of the same relative to the I-beam it is assured. The presence of the notches I8 at the inner sides of the hanger members, allows the hanger suspension lug or ears I5 to foot themselves firmly on the beam flanges I3, while at the same time reducing tendency of the bolts to cant or tip outwardly. The length of the hanger member provides a considerable length of bore I4 to support the bolt so as to brace the same against any tendency to'bend relative to its length under the stresses and strains incident to the support of the weight of the assembled form. When the side walls are in place, they may be secured against displacement in any suitable manner. While I have described above a method of assembling the form, whereby the bolts 23 and supporting members 23 are first affixed to the bottom form wall II, it will be obvious that, if desired, the hanger members I3 may be put in place and then the bolts 20 passed upwardly to screw into the hanger members until the supporting members 23 abut and support the bottom form wall; this being done by turning the supporting member 23 and consequently the bolts 20 which are non-rotatively assembled therewith. Such turning may be facilitated by application of a suitable tool to the wrench lugs 32 of the supporting member.

An advantage of the form retaining and attaching device of this invention is that, when a section of the form is related thereby to the beam II), it may be shifted bodily and longitudinally along the beam, so as to assure proper jointure with cooperating form sections.

Referring to Figs. 6 to 9 inclusive, there is shown therein a somewhat modified type of the novel retaining or attaching device of this invention, the same comprising a hanger member 33 having an axial bore 34. Integral with the upper end portion of the hanger member 33, to project laterally from the inner side thereof, is

a horizontal suspension lug or ear 35. Connected with the outer side of said hanger member 33 is an outwardly and laterally projecting bendable spacer stop 36. Below the suspension lug or ear 35, to project in opposite directions from the lateral sides of the hanger member 33, to lie parallel to the beam to which the hanger member is applied, are keeper arms or wings 38, adapted to abut the margins of the beam flange to hold the hanger member against turning. The reference character 39 indicates the hanger bolt having a threaded shank portion and a head 40. The hanger bolt'is assembled with a supporting member 4|, having the flanges 25 and bendable ears 26 to engage the bolt head 49, to retain the bolt bothagainst rotation and longitudinal displacement relative to the sup-porting member. The supporting member 4! is provided with a conical or externally tapered central sleeve or cone 42 through which the bolt shank extends. The under face of the supporting member may be concentrically ribbed as at 33 to provide intermediate grooves 44, whereby frictional engagement of such face with a form bottom wall i i is reduced. This is of advantage, whether the bolt and supporting member is associated with either the first described or'seconddescribed type of hanger member, since it reduces friction when either assembling or disassembling the form retainingand attaching devices. If desired, the bore of the hanger member 33 may be threaded at itsupper end portion, as in the first above described form of hanger member; as an alternative tothis, however, and as shown in Figs. 6 to 9 inclusive, the bore is not threaded, but in lieu thereof a nut 45 of suitable kind is supplied for engagement with the freeend of the bolt shank as it projects upwardly through and beyond the top of the hanger member. To reduce friction between the top and end of the hanger member and the nut, the former may be chamfered in opposite directions from a transverse medial line, thus providing aprojection 46' affordinga minimum= of surface contact with the nut, while at the same time permitting the nut to readily adjust itself to the hanger member withoutdisturbing the alignment thereof.

In assembling the formby means of the last described retaining or attaching devices, the operations are substantially the same as above set forth in connection with the first described devices, and the spacer stops 36' may be adjusted for desired spacingefect by bending, or may be removed from service by further bending, as shown in Fig. 6 by dotted lines, when it is not desired to have the ends of the stops exposed at the faces of the cast concrete.

In dismantling the forms, whichever specific type of retaining or attaching devices are used, the bolts and supporting members are screwed outwardly from the hanger members, and withdrawn from the cast concrete, the hanger members being left imbedded in the latter. The voids left by withdrawal of the bolts and supporting member, may be plugged or pointed up with cement when finishing the job. It will be obvious that the bolts and supporting members may be repeatedly used, it only being necessary to furnish additional hanger members. This makes for economy, since the cost of the hanger members is relatively low.

It may be desired with either type of retaining or attaching devices to tie together laterally opposed sets thereo-f, as applied to opposite sides of a beam, to assure against accidental displacement pending the pouring of concrete. This may be done by means of the wire or other form of tie 41, as shown by dotted lines in Fig. 6.

The supporting member, in either form shown, or in other modifications thereof, as provided with the means for engaging and interlocking a bolt head therewith, provides, per se, a novel element useful in form assembling work of various kinds.

Having now described this invention, I claim:--

1. Means cooperable with structural iron or steel elements for supporting forms in connection therewith, comprising a hanger member having a suspension ear to engage the element, a supporting member, a bolt assembled with said supporting member, said supporting member having means cooperable with the bolt head to retain the bolt against rotative and longitudinal movement relative to said supporting member, said supporting member being adapted to abut and support a form wall, means for detachably connecting said,

bolt with said hanger member, a laterally projecting spacer stop extending from the outer side of said hanger member, and keeper arms oppositely projecting from lateral sides of said hanger member.

2. Means cooperable with structural iron or steel beams or the like for supporting formsin connection therewith, comprisinga hanger member having an axial'bore, a suspension ear horizon'tally projecting from the inner side of said hanger member at its upper end portion, a sup porting member, a headed bolt having its shank extended centrally throughsaid supportingmemher; said supporting member having bolt head embracing flanges between which the bolt head is ncn-rotatively engaged, said embracing flanges having bendable ears engageable over thebolt head to retain the same against longitudinal displacement from said supporting member, said supporting member being adapted to abut and support a form wall through which the bolt extends, means for detachably engaging said bolt with said hanger member, and a spacer stop projecting from the outer side of said hanger member against which other form walls may be abutted to space the same relative to a beam, said spacer stop being bendable to foreshortened spalcing extension or out of service position at wil 3. Means cooperable with structural iron or steel beams or the like for supporting forms in connection therewith, comprising a hanger member having an axial bore, a suspension earhorizontally projecting from the inner side of said hanger member at its upper end portion, a supporting member, a headed bolt having its shank extended centrally through said supporting member, said supporting member having bolt head embracing flanges between which the bolt head is non-rotatively engaged, said embracing flanges having bendable ears engageable over the bolt head to retain the same against longitudinal displacement from said supporting member, said supporting member being adapted to abut and support a form wall through which the bolt extends, means for detachably engaging said bolt with said hanger member, a bendable form wall spacer stop projecting from the outer side of said hanger member, and bendable keeper arms oppositely extending from lateral sides of said hanger member so as to be movable into abutment with the beam flange from which the hanger member is suspended to retain the latter against rotative displacement.

4. Means cooperable with structural iron or steel beams or the like for supporting forms in connection therewith, comprising a hanger member having a suspension ear horizontally projecting from its upper end portion, said hanger member having an axial bore, means carried by said hanger member to engage the margins of the beam flange from which the hanger member is suspended to retain the latter against rotative displacement, form wall carrying means having portions engaged through the bore of said hanger member, means for detachably connecting said carrying means with said hanger member, and an adjustable form wall spacer stop projecting from the outer side of said hanger member.

5. Means cooperable with structural iron or steel beams or the like for supporting forms in connection therewith, comprising a hanger member having a suspension ear horizontally projecting from its upper end portion, said hanger member having an axial bore, means carried by said hanger member to engage the margins of the beam flange from which the hanger member is suspended to retain the latter against rotative displacement, form wall carrying means having portions engaged through the bore of said hanger member, means for detachably connecting said carrying means with said hanger member, the inner side of said hanger member beneath the suspension ear being cut away coincident with its bore for the purposes described.

6. Means cooperable with structural iron or steel beams or the like for supporting forms in connection therewith, comprising an elongated hanger member having a laterally oil-set suspension ear at its upper end portion, said hanger member having an axial bore the upper end portion of which is internally threaded, laterally projecting bendable keeper arms extending from opposite sides of the upper end portion of said hanger member, said keeper arms being movable across the margin of a beam flange from which the hanger member is suspended to hold the latter against rotative displacement, and form wall attaching means including a threaded shank insertable through the bore of said hanger member and upon which the latter may be screwed.

'7. Means cooperable with structural iron or steel beams or the like for supporting forms in connection therewith, comprising an elongated hanger member having a laterally ofi-set suspension ear at its upper end portion, said hanger member having an axial bore the upper end portion of which is internally threaded, laterally projecting bendable keeper arms extending from opposite sides of the upper end portion of said hanger member, said keeper arms being movable across the margin of a beam flange from which the hanger member is suspended to hold the latter against rotative displacement, form wall attaching means including a threaded shank insertable through the bore of said hanger member and upon which the latter may be screwed, and an adjustable form wall spacer stop projecting from the outer side of said hanger member.

8. In form wall retaining means, a supporting 10 member to abut a form wall, a headed bolt having its shank extended centrally through said supporting member, said supporting member having means cooperable with the bolt head to retain the bolt against rotative and longitudinal 15 movement relative to said supporting member, said supporting member having means at its inner face adapted to reduce the contact area thereof and thus to reduce friction when turned against the surface of a form wall.

9. In form wall retaining means, a supporting member to abut a form wall, a headed bolt having its shank extended centrally through said supporting member, said supporting member having means cooperable with the bolt head to retain the bolt against rotative and longitudinal movement relative to said supporting member, said supporting member having nail receiving openings, and nail stop projections adjacent to said openings.

SAMUEL S. COLT.

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