US1963362A - Brace and method of forming concrete structures - Google Patents

Description

June 19, 1934. s. M. GOODER BRACE AND METHOD OF FORMING CONCRETE STRUCTURES Filed May l, 1931 6MM?- Qi.

Patented June 19, 1934 BRACE AND METHOD OF FORNIING CONCRETE STRUCTURES Seth M. Gooder, Chicago, Ill.

Application May 1, 1931, Serial No. 534,336

9 Claims.

This invention relates to an apparatus and a method for forming concrete walls and particularly for forming concrete walls and constructions generally in trenches, holes, excavations,

or other constricted spaces although it is not limited in its use to that particular association.

One object of the invention is to provide means for spacing and holding Walls, retaining members or forms. If the invention be applied to a construction in which a wall is to be built in a trench, one object of the invention is to provide means for keeping the trench open by holding apart the members which retain its sides. The device of this invention may also be used to retain a portion of the members which serve as the form for a concrete wall.

Another object of the invention is to provide in connection with a method and apparatus of the sort suggested, means whereby the load carrying member of the prop or shore may be removed after the wall is completed so that it may be used again.

Other objects will appear from time to time in the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawing, whereinz- Figure 1 is a vertical cross section, showing the props of my invention in place ina wall during the process of formation;

Figure 2 is a longitudinal cross sectional detail on an enlarged scale through one of the props; A Y

Figure 3 is a sectional view through the wall,

.35 after the concrete is in place and after the load carrying member of the prop has been removed; Figure 4 is a detailed cross sectional View on an enlarged scale, showing a modified form of a portion of my invention;

Figure 5 is a further modification;

Like parts are designated by like charactersl throughout the specification and drawing.

A indicates a foundation upon which a wall is to be built. It may be any suitable supporting k4.5 Surface, involving a prepared foundation or mereare formed, may be positioned horizontally and the vertical channel members which may be in relatively short sections, as indicated in Figure l, will then be positioned vertically. Whether or not either of these members are vertical or horizontal is a matter of convenience and they might be arranged either way.

Since, however, they serve together as a retaining structure, it is preferable that they are angularly disposed with respect to each other so that one tends to reinforce the other. `Each of the channel members, while it may be of any suitable construction, is preferably built up of a pair of angles C, C, which are welded together as at C1. This weld is ordinarily not continuous throughout the length of the channel. As a centering and spacing member, rings C2 are preferably welded or otherwise fastened within'the channel as shown in Figures 2 and 3. This centering member may be of any suitable construction but isrhere shown as formed of a rod bent into a circular shape and then welded to the inside of the channel. The wall members B1 are preferably associated with frame members C3 which will ordinarily be generally parallel to the channel members C and, therefore, will run` at right angles to the members which make up the walls B, B1. l

The prop construction -will now be described. The prop which is used is preferably tubular and formed of a member D which is notched at one end as at D1. At its opposite end the tubular member D is positioned about one kof the centering rings C.2 as shown in detail in Figure 2. At its` other end it has seated in it a hollow interiorly threaded member D2 which is preferably provided with a flange D3 and a projection D4 which is. seated in the notch D1 of the tube D. A threaded relatively extended member 'D5 is engaged in the threaded member D2. The member D5 may carry at its outer end an enlargement D's which may be generally spherical as shown and provided with one or more perforations D7 through it. The perforations D'7 serve as a means of engaging the screw and turning it and instead of such perforations other means might be used for engaging and turning the screw. The generally sphericalV member Ds is seated in a plate Ds which rests upon the frame member C3 and is provided with a depression D9 to receive and place and retain the spherical member D6.

Positioned about the tubular member D is asecond and preferably much lighter tubular member E. This member may be in contact withV or out of contact with the member D. At its outer formed with a main generally cylindrical portion.,

F which preferably corresponds. in interior diameter to that of the member E,'and this pore tion of the thimble rests within the enlargement El of the tube E. At its outer end the thimble F is provided with an inclined or flaredv portion F1 which may terminate `'in a laterally' extending flange F2. n When a wall is to be constructed, a form, in addition to the walls already described, is preferably used. Such' a form is illustrated in Figures 1, 2 and 3 and is shown as made up of planks or other separable members G. These members are ordinarily perforated as at G1 so thatthe tubular member D may extend through the form. The thimble member of whatever design is arranged so that its flange contacts or closely approaches the inner surfaceof the member or members G'.-

When the forms and props are in place, concrete I-I is poured or otherwise placed within the form, and the wall is built up with or without reinforcing. Any type of wall may be made, using my apparatus and method, which are equally applicable to a wide variety of walls and my apparatus and method may be used in connection with the construction of any sort of wall in which it isnecessary to provide props for retaining walls or forms during theconstruction of the wall.

After the wall has been completed'and it is desired to remove the props, that can be done readily because the load carrying portion of the prop;` including particularly the tubular member D, is not in contact with the wall but merely lies 'within a perforation formed within it, and

is retained or heldout of contact with it, by the tubular member E. Since this is the ease, the screw may be removed and the tube D and other parts may readily be pulled out. 'Thus the prop as a whole is removed andthe relatively lighter retaining member with the thimble'whi'ch'is used with it", remains in the wall. otherV lli'ng material H1' may then be Vputv in position withinfthis member and it remains in place vpermanently within the wall. The prop having been removed, it may be used again andl again. The outer formmade up of the members G may also be removed. Ordinarily the wall B, ifit is located in a trench, has served as a retaining wall and thus lies between the'surrounding material and the wall which has been built and,l therefore, cannot be removed. v

Wallor pier or almost'any structural member and my claims are to be understood as not being lim-- iteslw a wallfIt will be realized that whereas I have herewith shown andvr described a practical operative defr vice, nevertheless ymany changes might be made Concrete or in the size, shape, number and disposition of parts without departing from the spirit of my invention and I wish therefore that my showing be taken as in a sense diagrammatic. In particular the shielding member which surrounds the jackscrew and which is of adjustable length might be made of a single member instead of being formed of Vtwo relatively-movable' parts It might, for example, be formed with corrugationsv permitting it to be elongated and shortened by variations in the corrugations. Where the space adjacent the Wall is limited and it might be difficult to remove the tubular member D, as a unit, this member may be vmade sectional so that the sections may be separately removed and thus the device may be used in extremely constricted quarters.

There is shown in Figure 5 a construction in which the outer sleeve which surrounds the membe1'.D ismodied to reduce the Contact between the two and to reduce the friction. In this form of the invention, an outer sleeve H is used and it is'inden'ted as at H1.V Such indentations may be circular or any other shape. Their effect is` to position the sleeve H with respect to .the member D but to limit the .contact between the two. Thus when the member D is removed,V the friction between the tworis reduced. At the outer end of the member as shown in Figure 5,-a thimble I is provided.y It is generallysimilar to the thimble Fas shown Figure 4 but instead of having an outwardly extending flange, 'it may have a pluralityzof projecting members or tonguesA Il and these engage and are held within a pre-cast concrete ring or block I2. This block or ring has its outer surface, as at I3, inclined, grooved, roughened or otherwise shaped so that when the wall is cast about it, it and the thimble which is engaged in'it will be held in the wall.

The use and follows: -v

It will beV assumed that the device of this in vention is to be used as a prop for retaining in position a pair of walls. As the walls are formed, channel members and frame members such as the members C and C3 are put into position. A

l prop'is positioned `at suitable intervals along the.

channel members and it bears at one end against.v a channel member and at the other end against a frame member such as the member C3. Thet props may be put in position as units in which the retaining tubular member E with the thimble E2 are in position about the prop' when it isv put in position or the prop may be put in posi-f tion separately. The retaining member? E might be put in posi-tion,'then vthe thimble inserted vin it and then the tubular member Dinserted after-H ward. However the prop is-placed in position, when it is to be used, the parts are shown indetail in Figure 2 and they occupy the general relative positions shown in that figure. The distance between the forms forthe wall cannot always be held uniform. For that reason the thimblev construction is used and permits some relative move- *Wherein thegvspecification and vclaims the expression vwall or walls is used in reference to ment of the thimble and themember E and thus the vtotal length of these two members may be increased or decreased so that irrespectivefof.th'ejw Variation in the distance between the forms, fab' complete covering -is provided for the 'prop :D so that throughout the entire portion of its length" which lies within the forms it is covered-'andi' will beheld out of contact with the wall'as ythe latter is constructed within-the `fo-rms.l When? the wall has been formed and the 'propis no* longer necessary, it is removed bodily or in pieces and the member E, with the thimble'E2,;wil1"re`-.

operation of my invention are asY iso main in position. The cavity within them may be filled as shown in Figure 3.

The thimble may be removed. Its removal is rendered easier withthe tapered form of thimble shown in Figure 4. When the thimble is removed, the outer surface of the Wall may be nished up smooth without any metal lips or parts projecting from it.

I claim:

1. In combination in a form spacing member, a load-carrying part, means associated with said member and surrounding said part and all of that portion of the member which lies within the form, said associated means being relatively weak and being formed of a plurality of parts mounted one about the other, and adapted to be relatively elongated and shortened.

2. In combination in a form spacing member, a load-carrying part, means associated with said member and surrounding said part and all of that portion of the member which lies within the form, said associated means being relatively weak and being formed of a plurality of hollow members positioned about said spacing member, said hollow members positioned one within the other, for relative elongating and shortening movement, the two members having substantially the same interior diameter. A

3. In combination in a form spacing member, means adapted to permit withdrawal of the load carrying parts of the member from a structure cast about it after the form has been used in casting the structure, comprising a non-load carrying housing surrounding that portion of the spacing member which lies within the form, adapted to hold the same out of Contact with the cast-structure during and after casting.

4, In combination with a form spacing member for use in casting a structure, means adapted to permit withdrawal of the load carrying parts of the member after the form has been used in casting said structure, comprising a non-load carrying housing surrounding that portion of the spacing member which lies within the form, adapted to hold the same out of contact with the said structure during and after casting, said housing adapted to remain embedded in the structure after it is completed.

5. In combination in a wall structure, a plurality of retaining walls adapted for use in casting a structure, and a prop adapted to position said walls, said prop comprising a hollow load carrying member, and a co-operating member, the two forming together a jack-screw, and a relatively light hollow member, said member being positioned about the jack-screw and adapted to hold the cast structure out of contact with the jack-screw.

6. In combination in a wall structure form, a plurality of retaining Walls adapted for use in forming a structure, and a prop adapted to position said walls, said prop comprising a hollow load carrying member, and a co-operating member, the two forming together a jack-screw, and a relatively light hollow non-load carrying member, said member being positioned about a jackscrew and extending from end to end of that portion of the jack-screw which is to be surrounded by the said structure, and adapted to hold the structure out of contact with the jackscrew.

7. The method of forming a wall within a constricted space, which comprises the following steps: erecting within said constricted space retaining walls, placing in position between saidv walls, to retain them, an extensible prop, positioning about said prop a relatively light hollow non-load carrying member, forming a structure about said prop and in contact with said hollow member, withdrawing the prop from the hollow member.

8. The method of forming a wall Within a constricted space, which comprises the following steps: erecting Within said constricted space retaining walls, placing in position between said walls, to retain them, an extensible prop, positioning about said prop a relatively light hollow non-load carrying member, casting a structure about said prop and in contact with said hollow member, withdrawing the prop from the hollow member, and filling the interior of said hollow member after the withdrawal of the prop.

9. The method of forming a structure which comprises the following steps: erecting retaining walls, placing in position between said walls to retain them, an extensible prop, positioning about said prop, a relatively light and structurally weak hollow member, casting a structure about said prop and in contact with said hollow member, withdrawing the prop from the hollow member after the structure has dried suiliciently and leaving the relatively light member permanently within the structure.

SETH M. GOODER.

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