US2519575A

US2519575A - Form for use in shuttering

Info

Publication number: US2519575A
Application number: US762064A
Authority: US
Inventors: Huish Herbert Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-03-21
Filing date: 1947-07-19
Publication date: 1950-08-22
Anticipated expiration: 1967-08-22

Description

Aug. 22, 1950 H. c. HUlSH FORM FOR USE IN SHUTTERING Filed July 19, v1947 2 Sheets-sheaf 1 1a [12 I f A is If 0 I Q /0 O 0 9i I I 5 g g a L s- 5 z *6 o of 0 D o O m .0 of

' 1a I? I 1/ 0 0 5 1 GD 0 GD I I I I [I I I I I I II I I I I I I I I I I I?- I I l4? Au8- 1950 I H. c. HUISH 2,519,575

FORMFOR USE IN SHUTTERING Filed July 19, 1947 2 Sheets-Sheet 2 I MMWJM gamers 5), such additional members being formed conveniently of angle iron as shown in Figures 4 and 5, welded to the face-plate I.

To the external surface of the bottom of the channel or channel iron 2 is welded an angle iron B'With the free flange thereof away from the face-plate l, and to the inner surface of the wall of angle iron 3 away from the face-plate l is welded a flat strip or bar I0, one edge of which extends from within the channel of said channel iron 3.

Two or more metal bars II, three in the example shown, are disposed transversely of and connected to the angle iron 9 of channel iron 2 and the bar IU of the channel iron 3, by means of bolts or screws I2. The bars Il may be of metal strip capable of being flexed to the desired curvature,'the strip being provided with slots I3 for the passage of the bolts or screws 12 to permit adjustment of the bars I I transversely of the angle irons 2 and 3 and of the additional stiffening members 8 as the face-plate l is bent to th desired curvature prior to clamping of the bars ll. Alternatively the bars II may be stifl bars of preformed curvature. When in the connected position the bars II are spaced from the rear surface of the face-plate I and in the space are accommodated corrugated steel sheets I4 disposed with the lines of the corrugation generally parallel to the channel irons 2 and 3.

In the case illustrated the bars II are connected with a stiifener 8 located in the region of the centre line of the form in such a manner as to be incapable of transverse movement relative thereto; the bolt and slot connection l2 and I3 described above being provided at the edge stifieners 2 and 3 and the remaining stiffeners 8 between the centre line and the edges.

The corrugated steel sheets I4 may be retained in position by disposing them with a groove or corrugation enveloping one of the angle iron stifleners 8 (see Figure 5) the bolts 42 securing the slotted bars I I to that angle iron passing through holes in the corrugated sheet. In such case the small lugs I5 of relatively small width are provided on the angle iron 8 for engagement by the bolts [2.

Other stiffening angle irons 8 such as that of Figure 4 may be left free of the corrugated sheets HI or in other words the edges of separate corrugated sheets may lie at each side of the angle lIOIl.

The ends of the bars I I instead of being slotted may be forked as shown in Figure 8 and the surface of the bar ends, whether forked or slotted, may be provided with serrations NS for engagement by a correspondingly serrated washer I! provided beneath the head of the bolt.

In the case of narrow forms the intermediate stifiening angle irons 8 may be omitted.

The sheets of corrugated steel I4 between the metal face-plate I and the bars II readily accommodate themselves to the required curvature of the face-plate and thereafter constitute very efficient bracing elements. The corrugated steel sheets are preferably somewhat shorter than the height of the metal face-plate I.

The improved form may of course also be used fiat, i. e. with straight or unflexed bars I I.

A number of the forms as described above may be readily assembled edge to edge by nesting the projections 7 of one in the channel of channel iron 2 of the nextand soon, nd they maybe 4 used to produce either concave or convex surfaces and'surfaces of simple or compound curvature. They are also well adapted for use in conjunction with the fiat forms described in my copending application for patent Ser. No. 762,063 when it is desired to produce curved surfaces merging into flat surfaces.

I claim:

l. A form for shuttering as used for constructional work in concrete, comprising a four-sided flexible metal face-plate, a number of stiffening members extending between two opposite edges of the sheet at the back thereof and fixed to the face-plate in spaced and general parallel relationship with one another, and including one stiffening member of channel section mounted. in the region of one edge of theface-plate with the channel outwardly directed, a second stiffening member mounted in the region of the opposite edge of the face-plate and projections on said second member extending in the outward direction from said second member and of a size to nest within channel section members similar to the said first stiffening member of channel section of a similar form, at leastone flexible bar disposed transversely of and connected with said' stiffening members in such manner as to permit relative adjusting movement in the transverse direction between said bar and at least one of said first and second members and at least one sheet of corrugated material flexible.

in one direction disposed between the back of the face-plate and the said flexible bar with the lines of the corrugations extending in the general direction parallel to the said stiffening members.

2. A form as claimed in claim 1 wherein one of the first and second stiffening members is mounted so as to project outwards by a short distance from the edge of the face-plate at which it is mounted and the other is set back by a similar short distance from the edge of the faceplate at which it is mounted.

3. A form as claimed in claim 1 and including at leastdone stiffening member fixed to the back of the face-plate intermediate the said first and second stiffening members, the said flexible bar being afilxed to one of said intermediate stiffening members in such a manner as to be incapable of transverse movement relative thereto."

'4. A-form as claimed in claim 1 wherein the said second stiffening member is also of channel section with the walls of the channel deformed to provide the outwardly extending projection in the form of a channel bottom of smaller width than that of the main portion of theichannel,

the external width of said channel bottom being,

equal to the internal width of the said first channel section stifiening member.

, HERBERT CHARLES HUISH.

REFERENCES CITED The following references are-ofrecord in;.the

file of this patent; I, V UNITED STATES PATENTS France May 8, 1931