US1773918A

US1773918A - Support and spacer for reenforcement bars

Info

Publication number: US1773918A
Application number: US307526A
Authority: US
Inventors: William E Mathews
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-09-21
Filing date: 1928-09-21
Publication date: 1930-08-26
Anticipated expiration: 1947-08-26

Description

Patented Aug, 26, 1930 UNITED STATES WILLIAM E. MATHEWS, E NORTHEIRMINGHAM, ALABAMA SUPPORT nn SPACER FOR EEENEoRc MEN'r' EARS Applicati on filed September 21;1928. Serial No; ao7,52e,--

My invention relates to devicesfor supporting and spacin reenforcement bars in the forming of reen orced-concretestructures I.

proved support comprises a unlt'a'ry bench and has for its object the provision of a device of the character designated which shall be simple and rugged of design, which shall afl'ord adequate support and accurate spacing for the bars, and which shallbe sufiiciently skeleton like to permit the flow of concrete around the bars and the supportwhen the concrete is being poured. v I

A further object of my invention isto provide a unitary device for supporting and spacing reenforcement. bars in concrete gird- 1-5 ers which shall be simple and vconvenient to use and which shall provide uniform spacing of the reenforcement bars in the" girder, together with a sturdy support for the'same lwherebythe bars are not readily displaced Whenthe girder is poured;

Briefly, my invention comprises a sheet metal bench like device with spacing members struck up from the horizontal portion thereof at uniform distancesapart, providing spacers for thebars and also providing openings for the concrete to penetrate the structure of the support and around the bars. The sides of the structure are also provided with suitably s'paced holes to permit the inflow of concrete and the ends of the sides are] cut away'to avoid interference with a cham port and spacer in side elevation with reen-- forcement bars in section;

Fig. 2 is across sectional view of a reen forced concrete girder form with; my improved supports and spacers in place;

Fig. 3 is'a longitudinal sectional view along 48 the line IIIIII of Fig. 2 ;.and p bars;

Fig. 4a is a sectional'view taken along the line" IVIV of Fig. 1. I 8

Referring now to the' drawings, my im like device comprising a deck'lO and down turned sides 11 and 12'. The sides 11 and "12' "I I are outwardly spl'ayed' as shown togive greater stability to the devicem Up-struck fromthe deck 10 are spacing

members

13 and 14;. which: hold in place reenforcement bars 16 which are laid on the deck between the spacing members; The formation of the

spacing members

13 and 14, in the manner, justydesoribed, provides a solid} deck upon which the reenforcement bars rest and pro vid'es holjes 17'between the bars for the inflow oflconcret'e into the'structu-re of'the sup 7 port when the concrete is being poured around I the bars. 4 e

- The sides 11 and 1-2of thefdevice are pro'w vided with holes-18 whichfurthe'r facilitate the inflow ofconcret-e; The device shown in Fig. 1 is inten'ded asthe-lower support-for reenforcement bars where a pluralityof se' v 70 of the

sides

11 and 12 is'anotched out at"1 9 .l a

ri'esof bars are employed an'd the lower part to provide furtherv openingsfrThe notches 19 are so spaced as to formfpoints'of' rest;

21 for the supportwhich fall thereenforcementbars 161 directly under In Fig; 2 of the d'rawings, I show a con- J crete girder form inwhich' my invention is f particularly adaptedioruse The form coin ,c

prises the *usual 'si'des 22 and 23- and bottom 21: ;Where'the'sides are joined to the bottom 24; are provided cham'ferf strips 26' and 27 for obviatingsliarp corners on ,thegirder. The ends: of my improved-support areijcut away chamfer strips andthe support is given lim ited;.elearance with respect to-the sidesof the Where my improved device: is used; as a :di-agonallyat 28iand -29to conform to the spacer, the sides may not be made so high as shown in F ig. 1 and the lower portion of Fig. 2, but are preferably out Oh to form a straight edged bottom as shown at 31 in Fig. 2 which rests directly upon the reenforcement bars in the lower portion of the form.

From the foregoing description it will be apparent that my improved device may be readily manufactured by stamping and that it may be made in varying lengths to accommodate girders of various cross sectional dimensions. It will furthermore be apparent that the skeleton like structure affords substantial support while, at the same time, the formation of the openings permits the ready inflow of concrete so that it avoids honey combing of the girder or other structure.

While I have shown my invention in but two forms, it will be obvious to those skilled in the art that it is not so limited but is susceptible of various changes and modifications, without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art, or as are specifically set forth in the appended claims.

What I claim is:

1. A unitary reenforcement bar support comprising a horizontal deck portion, upstruck spacing members in the deck portion providing a solid deck for the reenforcement ars and openings in the deck between the reenforcement bars, and down-turned sides to the deck portion forming supporting legs.

2. A unitary reenforcement bar support comprising a horizontal deck portion, upstruck spacing members in the deck portion providing a solid deck for the reenforcement bars and openings in the deck between the reenforcement bars, and sides turned downwardly at substantially right angles to the deck portion forming supporting legs, said sides having provided therein spaced holes for the inflow of concrete into the structure.

3. A unitary reenforcement bar support comprising a horizontal deck portion, upstruck spacing members in the deck portion providing a solid deck for the reeniorcement bars and openings in the deck between the reenforcement bars, downturned sides to the deck portion forming supporting legs,said sides having provided therein a plurality of holes for the inflow of concrete into the struc ture, the ends of the sides being cut away downwardly diagonally, and said sides be-- ing'notched along their lower edges to form supporting legs, said notches being so spaced that the legs fall directly beneath the reenforcement bars.

4. A unitary sheet metal reenforcement bar support comprising a horizontal deck portion, up-struck spacing members in the deck portion providing a solid deck for the reenforcement bars and openings in the deck be- WILLIAM E. MATHEIVS.