US1107486A - Reinforced concrete construction. - Google Patents

Description

J. W. BRAGSTD.

BEINFORCBD CONCRETE CONSTRUCTION.

APPLICATION FILED OCT. 21, 1913. i

Patented Aug. 18, 1914.

2 SHEETS-SHEET l.

w/rA/Essfs.'

J. W. BRAGSTAD.

BEINFORGED CONCRETE CONSTRUCTION.

APPLIoATIoN FILED 0012.21, 1913.

1,107,486.D Patented Aug. 18, m4..

2 SHEBTS-BHEET 2.

JQSEJPH W.

lf GSTD?. QF SIOUX CITY, IOWA.

RNFQRCED CONCRETE CONSTRUCTQN.

nitrates,

' Application led October 2d, 1913.

Specicaton oI Letters Patent.

To alt whom t may concern."

Be it -lmown that F, .liosnrH W. BRAGSTAD, a citizen of the United States, and a resident of Sioux City, in the county "of Woodburyand State of llowa, have invented certain new and useful Improvements in Reinforced Concrete Construction, of which. the following is a specification rlhis invention relates to reinforcedconcrete construction;

The rimary object of the invention is the pr uction of an improved concrete construction stable. and durable and wherein.

the cost of construction is reduced to the minimum..

Another object is thefproduction of i1nproved sheet-metal plates which serve both as form and reinforcing members.

' With the above and other objects in View, the invention, consisting in the construction, combination and novet arrangement of parts, will be fully understood from the followingl description, reference being had to the accompanying drawings which form a part of this application'and inwhich like characters of reference indicate corresponding parts throughout the several views, of which,-

Figure 1 is a fragmentary horizontal section of` a/kwall constructed in accordance with my invention; Fig. 2 is a vertical secv tion of a modiedform of Wall suitable as a retaining wall or other structure wherein great strength is required; Fig. 3 is a fragmentary side elevatio of the reinforcement plates ,employed in theJ modification; Fig: 4 is a fragmentary side elevation of the reinforcing plates presented in Fig. 1; Fig. 5 is a 'vertical section taken on the line a-b of Fig. 4 in the direction indicated. by the arrows.; Fig. 6 is a ldetail perspective view of the reinforcement plates; and Fig. 7 is a perspective view of the hollow wall construction. i

'llhe` invention contemplates a concrete construction wherein the reinforcing members comprise outer and inner sheet-metal plates maintained in parallel and spaced relation to each other by means of transverse ties, and ada ted to serve as a mold for the reception o concrete, and upon the outer faces of which plaster or stucco may l be applied.

The invention may be either applied to monolithic or hollow wall construction.. 1n the latter application a continuous dead-air space may be provided by constructing two vof the above-described walls in suitable spaced relation to each other, and, if desired, the two walls may be interconnected, at intervals, by transverse ties.

Referring now to the illustrations, the outer and inner reinforcement or form members are eachcomprised of separate sheetmetal plates, 6, the upper edges of which are bent outwardly at an angle from the plates thus forming wings, 7, which are provided with longitudinal slots, 8; and the lower edges of which are bent at an angle mwardly forming wings, 9,' oppositelydis posed to the wings, 7. Portions of the wings, 9, alined with the slots, 8, are sheared and bent outwardly forming tenons, v10. lin assembling the plates the slots, 8, admit the tenons of the plates immediately above, and the outwardly-angled edges of the plates embrace the inwardly-angled edges of the adjacent plates, as clearly shown in Figs. 2r and 7. When employed-in monolithic construction, where great strength is essential, the plates are held in parallelism and lateral displacement thereof is prevented by suitable ties, 'such as the rods, 11, the ends of which are passed outwardly through apertures, 12, then bent inwardly through apertures, 13, and the extreme ends bent over adjacent the Vinner faces of the plates. When the invention is applied in hollow wall conv struction, the separate plates are assembled in the manner previously set forth; however, in order to simplif the process of con- `struction and obviate t le expense of additional material for interconnecting the outer and inner shells, longitudinal strips, 14, are

shoulders, 15, which engage the opposite plates, the reduced portions-being extended through slots, 16, and the protruding ends bent laterally adjacent the outer face of the plates'. The punchings are disposed in horizontal rows which are alternately arranged with respect to the rows of the opposite plates. In either monolithic or hollow wall construction the plates are arranged in courses and concrete, 17, then filled in between them. During the process of filling, portions of the wet concrete will protrude through the slots and other apertures of the plates and this may be troweled up onvthe outer faces of the plates. Stucco or cement,

The free ends 18, may then be applied to the outer faces of the wall. In-hollow wall construction the outer and inner walls, 19 and 20, respectively, (Figs. 1 and 7) are constructed in spaced relation with each other and interconnected by any suitable cross-members, as the bars, 21, which are, obviously, placed in position as the forms are erected.

In Fig. l an upright timber, 22, extends into the air-space intermediate the outer and inner walls, to which member is secured a window frame, 23, provided with the usual casing, 24; stops, 25; sash, 26; sill, 27; and

blind-stop, 28, which abuts the edge of the outer wall. The spaces intermediate the upright 22 and the inner faces of the walls; and the frame 23 and the edges of the walls, are filled 'with concrete, 17, whereby an airtight connection' between the casing and window is obtained.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is,-

1. In reinforced concrete construction, outer and inner reinforcement andv form members, each comprising separate `plates members, each comprising separate integral plates assembled one above the other and provided with apertures and each plate having upper portions provided with slots and formed at an angle to the plate; lower portions formed'at an angle to the plate and oppositely to theupper angled portions; tenons sheared from the lower portions and positioned to be received by the slots of the adjacent' plate; elongated intermediate portions punched from the' plate and bent toward the opposite plate, said elongated portions having free ends reduced and adapted to be engaged Within the apertures of the opposite plate.

3. In reinforced concrete construction, outer and inner reinforcement and form members; eachcomprising separate sheetmetal plates assembled in a vertical plane, edge to edge, and each plate having elongated portions punched from and bent laterally toward the opposite plate, said plates being provided with apertures intermediate the elongated members and adapted to receive the free ends of the elongated portions of the opposite plates, said free ends being reduced to afford shoulders to engage the inner faces of and prevent the plates from displacement toward each other; and means for interlocking the ed es of each plate with those immediately a jacent.

.In testimony whereof I have hereunto set my hand in the presence of ytwo subscribing witnesses.

' JOSE-PH W. BRAGSTAD.

lVitnesses `M. S. CRAN'DALL, C. M. DUUs.

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