US1936772A - Insert for concrete structures - Google Patents

Description

NOV. 28, 1933. J SCHURMAN 1,936,772

INSERT FOR CONCRETE STRUCTURES Filed Feb. 14, 1931 A TTORNEY.

Patented Nov. 28, 1933 I 1,936,772 v UNITED-STATES. PATENTzOFFICE;

'' "1,936.7ra" I v L. 11 h INsEn'r Forcoononn'rn sTaUorUnns. I fJohn schurm mgmjahu Parnfiuicii. Application February 14,:19313 Serial 315,811, 1 h Claims. (101. 725101 'This invention relates to inserts for concrete be understood from Fig.1. On this transverse "structures,'the primary object being-to provide portion 6-I provide a U member A'comprising an insert of a character utilizable in'suspending afiat strip 'of' metal folded upon itself with the a ceiling'from-aconcretefloorslab; ffol ded endengaging about the portion 6; Oneof More' particularly the objectof the invention the legs 7of this lJ member has "an" extended 60 is to provide" an insert s'ecurable in fixed rlaportion -'9*eirtending' toward the otherleg -8at tio'n'in the form or mom by having a'portion such point that the U 'memberis intight'enthereof attachedto-the- 'f'ormin such manner 'gagement with the loop 6. i

that, in removing the-form, the attached mem- 'f The-object of this arrangement is to provide 10 ber bythe act of" removal is broughtoutwardly "a construction inwhich the Umemberwill re- 65 fromthe surface of the concrete to position for main at practically anyset position on'the deattachment of a member thereto. vice and thus remain in ahorizontal plane when I I 'Many structures heretofore in use for this same -turned'to suchplane in placing the device on purpose are of a'character to provide a part, "the form indicatedat 10 in Fig. 1. Both legs for instance awir'e loop, projecting from the of'thisUmember A arep'rovided withacentral 70 -concrete and a feature of my inventionresides aperture 11 to receive anail l2 which'is driven in the provision of apart in hinged relation therethro'ugh,preferably sufficiently driven home with the remaininginserted part to be with- -to cause the out'e'rends of the legs 7 and 8 to drawn to projected position for useby" theact come to conta'ctat the free ends, as shown in of-removal ofthe'form. F g.1. i I v v A further object and feature of the invention device is to -be placed' on the bottom'of *isto provide a wire device having foot porthe'form whether -it be a beam or a ceiling or tions of a character tohold' the device in upother 'structure'of plasticmaterial andthus the rightposition when laid in afformpreparatoryto :loopportionsA and 5-o'f' the" device lie in the securing thesame thereto and'a part in hinged body"of the concrete or plastic material "poured 80 relation therewith'normally having its base: porinto the form; The loops are of sufficient length -tion inthe same plane as the foot portions of -to eiite'nd to a considerable distance'finto the I the wire and thus position the" same at the surbody of the plastic material and may be looped fac'e of the concrete orplasticmaterial tob'e over reinforcing rods or wires i'f-so desired.

poured in the form anmnererore not so'deeply "After the concrete'i'sfset, the forms are re}. l

embedded in the form as to prevent-its ready moved and, as, indicatedby dotted lines inFig. removal instrippingthe form from'the concrete. lt-the stripping cf' the form 'from' the concrete, These and other objects and features of me due to thenail 12 havin'gbeen driveninto the invention are hereinafter more fully described form, pullsth'e'U member consistingpf the legs fand claimed-and the preferred-form of construc- 7 and 8"; downwardly-out of the body of "the tion of insert embodying my 'inv'enti'on is' concrete 13 thus leaving a slight-recess 14 in shown in the accompanying drawing in -'whichthe exposed surface thereof as shown in FigQ 2.

Fig. lis an; elevation or the insert shown as The- U member A is thus turned to projecting attached to the base portion of a form showing 'position'and'ifin' aceiling' to adownwa'rdly' pro-- 40 in dotted lines the relationship of the, parts as jecting position. If the device is to be-utilized 9,5"

the form is removed therefrom. v as aceiling insert, a suspending member 15'f0r Fig. 2 is a cross section showing the insert the ceiling is provided as shown in Fig. 2 conin the concrete and with the hinged portion sisting of a channel member'having its base inthereof projecting from the body for attachment serted between the legs 7 and 8 and secured there 345. of a ceiling supporting member. to by a bolt 16 passing through the aperture in Fig. 3 is a plan view of the insert. which the nail 12 was previously positioned. The The insert consists of a wire or bar 1 of any invention, however, is not confined to the parapproved form in cross section comprising the ticular use-with a ceiling slab as shown, althoughv two end or foot portions 2 and 3 positioned in such use is probably its more common use and 50' the same plane and connected by upwardly and it is further to be observed that any character of then downwardly tumed'portions providing loops 7 tie member may be utilized that is adapted to be 4. and 5 connected at the lower ends by a trans-v secured to the U member A. verse portion 6, the plane of which is approxi- It will-be noted that due to the U member lymately at the plane occupied by the uppermost ing at the surface of the concrete and not ex- 55' surfaces of the foot portions 2 and 3, as will tending thereinto to material distance, the

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said U member is easily turned outwardly from the surface and that the recess remaining in the surface isvery slight. If the device be used for suspending a ceiling as suggested in Fig. 2, such deformation of the concrete surface is not material. In other character of surfaces where uniform appearance is desired, the slight depressions produced by the withdrawal of the U member may be filled with plastic material and usually in such other instances the surface of the concrete receives a final coat in which case the slight depressions would naturally be filled therewith and the concrete provide a uniform surface.

From the foregoing description it is believed evident that my improved insert for structures formed of concrete or plastic material is of very simple form; is inexpensive in construction consisting of two simply formed parts not requiring any careful machine work, and that in this simple and inexpensive form I have provided an insert that is well anchored in the body of concrete and upon removal of the form the projection part thereof is withdrawn to position for attachment of a member to be supported or joined to the concrete member, and further that the various objects and features of the invention are attained by the construction shown and described. Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States is- 1. An insert for plastic material shaped by means of a form which consists of a body portion adapted to be embedded in the concrete at the time it is placed in the form, and a part consisting of a flat metal strip bent upon itself to form a U in pivotal relation with the body, and also embedded in the concrete by means of which it may be secured to an inner wall of the form whereby on removal of the form, the said part is pulled out of the plastic material to position permitting detachment from the form.

2. An insert for concrete or plastic material shaped by means of a form which consists of a body having an integral base adapted to support the same in a stable position on an inner wall of means of a form or mold consisting of a body formed with parallel foot portions and an intermediate loop like part extending into the body of the concrete and including a transverse portion extending to a plane slightly above the foot p01- tions, a member having spaced legs hinged to said transverse portion to lie on the same surface of the form supporting the foot portions and likewise embedded in the concrete, said legs having aligned apertures for receiving a nail in securing the insert to the inner wall of the form whereby, upon removal of the form, the said hinged element is forcibly withdrawn from its position in the concrete to a projecting position to receive an element to be supported.

4. An insert for concrete or like material shaped by means of a wood form which consists of a body formed of a metal rod like element having terminal foot portions bent to parallel relation and an intermediate connecting portion extending upwardly and thence downwardly terminating in a connecting transverse portion approximately centrally between the foot portions, a metal element hingedly secured to the transverse portion and embedded in the concrete, said hinged metal element being adapted to be secured to the surface of the form on which the foot portions rest andsimilarly embedded in the concrete whereby, after the concrete has been poured and set, the removal of the form draws the hinged metal element from the concrete to provide a projecting part adapted for attachment of a'tie member.

5. An insert for concrete or like material for use in the suspension of a member consisting of a body formed of a metal rod like element, the two end portions thereof lying in the same plane and the intermediate portion being upwardly and thence downwardly relative to each foot portion and connected by a transverse portion terminating in a plane just above the plane of the said 115 foot portions, a fiat strip of metal bent to provide a U engaging at a folded end over the said transverse portion, said metal strip having a part thereof extruded to prevent accidental removal of the U portion from said transverse portion, 120 the parts being so arranged that one leg of the U occupies approximatelythe same plane as the said foot portions, said legs of the U having aligned apertures for the reception of a nail or the like to secure the same to the portion of the 125 form or mold supporting the said foot portions whereby on removal of the form, the said U member is stripped from the concrete andturned to position to receive a member to be supported thereby, said member having an aperture for 130 alignment with the aperture of the said legs, and a bolt extending through the leg apertures and the apertures of the suspended element.

JOHN SCI-IURMAN.

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