U.S. patent number 3,792,560 [Application Number 05/149,297] was granted by the patent office on 1974-02-19 for interlocking metal sheets for use as roofing and/or walling and/or decking.
Invention is credited to Dudley Charles Naylor.
United States Patent |
3,792,560 |
Naylor |
February 19, 1974 |
INTERLOCKING METAL SHEETS FOR USE AS ROOFING AND/OR WALLING AND/OR
DECKING
Abstract
Interlocking metal sheets connected together at their
longitudinal edges are used as a form and reinforcement for
concrete to provide when the concrete is set, a reinforced concrete
slab for building construction. Each sheet has upstanding ribs
throughout its length and has interlocking clips at the
longitudinal edges thereof. The ribs include a plurality of
reinforcing bulges throughout their length and on both sides to
connect the sheets to the set concrete and prevent separation
particularly in a longitudinal or tensile direction of the metal
sheets.
Inventors: |
Naylor; Dudley Charles (St.
Ives, New South Wales, AU) |
Family
ID: |
22529624 |
Appl.
No.: |
05/149,297 |
Filed: |
June 2, 1971 |
Current U.S.
Class: |
52/364; 52/336;
52/450; 52/453; 52/630 |
Current CPC
Class: |
E04B
5/40 (20130101); E04D 3/30 (20130101); E04D
3/36 (20130101) |
Current International
Class: |
E04B
5/32 (20060101); E04D 3/24 (20060101); E04B
5/40 (20060101); E04D 3/36 (20060101); E04D
3/30 (20060101); E04b 005/23 (); E04f 013/12 () |
Field of
Search: |
;52/364-376,361-363,522,519,537,618,625,450,674,629,630,336 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
4,811 |
|
Feb 1914 |
|
GB |
|
872,817 |
|
Jul 1961 |
|
GB |
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Primary Examiner: Sutherland; Henry C.
Assistant Examiner: Ridgill, Jr.; James L.
Attorney, Agent or Firm: Groff; Emory L. Groff, Jr.; Emory
L.
Claims
I claim:
1. Interlocking metal sheets for use as a form and reinforcement
for concrete poured thereon to provide when the concrete is set, a
reinforced composite slab for building construction, each said
sheet including upstanding ribs formed throughout the length
thereof in parallel spaced relationship, and upstanding
interlocking clips formed one on each opposite edge of the sheet
throughout the length of the edge, each rib comprising a pair of
oppositely spaced legs upstanding from the plane of the sheet, the
space between said legs providing a fastener receiving opening for
attachment of building components to said slab, said legs being set
inwardly into abutting relationship above the sheet and that
portion above the abutting parts being formed into an inverted
triangular head, said abutting parts including reinforcing bulges
formed in spaced relationship therein throughout the length of said
abutting parts, said bulges extending from the upper part of the
spaced legs to adjacent the apex of the inverted triangular head at
right angles to the longitudinal axis of said ribs and serving to
connect the sheets to the set concrete so as to prevent separation
thereof particularly in a longitudinal or tensile direction of the
metal sheets, the edge interlocking clips each comprising one leg
of a rib, one leg of a triangle with the head extended to the full
width of the base of the triangle and having a downwardly, inwardly
flanged hook formed on the outer end for interlocking engagement
with the clip of the next adjoining sheet.
Description
The invention relates to interlocking metal roofing, walling or
decking sheets which are connected together at their longitudinal
edges to form a composite roof, wall or floor covering. The sheets
are formed with spaced, parallel upstanding ribs formed
longitudinally thereon for reinforcing the sheets, and each
opposite longitudinal edge is formed to interlock with the edge of
the next adjacent sheet. The ribs provide non-slip holding means
for fixing screws or the like for covering panels such as ceiling
members to the sheets, and in conjunction with connected edge
locking clips they provide reinforcing means when the sheets are
used as decking sheets and are embedded in concrete.
This invention relates to interlocking metal sheets which are
connected together at their longitudinal edges to provide roofing
and/or walling and/or a decking and whilst not limited thereto, the
invention is particularly applicable to a decking and mould for a
composite concrete structure.
Known interlocking sheets have a basic disadvantage in that when
designed for use as roofing or walling sheets they are not suitable
as a decking and mould for a concrete floor. On the other hand,
known interlocking sheets provided for a concrete floor fail to
provide adequate reinforcing for the concrete and also present
difficulties in fixing ceilings or ceiling supports thereto.
The object of the present invention is to provide interlocking
metal sheets which can be used as a roofing and/or walling and/or
as a decking, and when used as a decking the concrete when set
interlocks with the sheet and forms a composite reinforced concrete
floor structure to which ceiling members or ceiling supports can be
easily and effectively fixed.
According to the invention, each sheet has upstanding reinforcing
ribs formed throughout the length thereof in spaced relationship
and upstanding edge interlocking clips formed one on each opposite
edge of the sheet throughout the length of the edge. Each rib
comprises a pair of oppositely spaced legs upstanding from the
plane of the sheet, the legs being set inwardly into near abutting
relationship above the sheet and above the "abutting" parts formed
into an inverted triangular head. The edge interlocking clips each
comprise, one leg of a rib, one leg of the triangle with the head
extended to the full width of the base of the triangle and has a
downwardly inwardly flanged hook formed on the outer end for
interlocking engagement with the clip of a next adjoining
sheet.
One embodiment of the invention adapted as a decking and mould for
a composite concrete floor structure is described with reference to
the annexed drawings wherein:
FIG. 1 is a perspective view of a fragment of a metal sheet showing
the reinforcing ribs and interlocking edge clips, and reinforcing
bulges formed in the abutting parts.
FIG. 2 is a fragmentary end view of the metal sheet of FIG. 1
showing alternate means of fixing supplementary members, e.g., a
ceiling thereto.
FIGS. 3 and 4 show alternate forms of reinforcing bulges formed in
the abutting parts.
As illustrated each sheet 1 has two reinforcing ribs 2 formed
throughout the length thereof in parallel spaced relationship and
an interlocking clip 3 formed on each opposite edge of the sheet
throughout the length of the edge.
Each rib comprises a pair of oppositely spaced legs 4 providing a
cavity 5. Above the cavity the legs are set inwardly into abutting
or near abutting relationship as at 6 (referred to hereafter as the
"abutting parts") and above the abutting parts are formed into an
inverted triangular head 7.
The interlocking clips 3 each comprise one leg 8 of the same
sectional shape as a leg 4 one abutting part 9, one leg 10 of a
triangle, which latter is extended to the full width of the base 11
of the triangle 10. The leg 10 and base 11 are dimensioned
similarly to the inverted triangular heads 7 and a downwardly
flanged hook 12 is formed on the free edge of base 11 for
interlocking engagement with the clip 3, of the next adjoining
sheet 1.
The legs 4 and 8 may have reinforcing bulges such as 13, FIG. 1,
13a, FIG. 3 or 14, FIG. 4, extending from the upper part of the
spaced legs 4 to adjacent the apex of the triangular head 7. The
bulges 13, 13a or 14 may be oppositely disposed or relatively
staggered or they may be in the form of corrugations formed
continuously along the abutting parts 6. Each edge locking clip 3
may also have similarly spaced and shaped bulges 13, 13a or 14
formed thereon on that side thereof juxtaposed the adjacent
intermediate ribs 2.
Interlocking of a number of sheets to constitute a structure is
attained by overlapping clips 3 of adjoining sheets, springing one
leg 10 over the triangle base 11 and leg 10 of the next adjoining
sheet.
When the sheets are used as a decking and mould for a concrete
structure the concrete when set interlocks with the sheets by
reason of the inverted triangular ribs 2 and clips 3 and forms
therewith a composite reinforced concrete floor structure. The
inverted triangular heads 7 are in turn reinforced against the
pressure of the concrete thereon by the bulges 13, 13a or 14 whilst
the bulges 13, 13a or 14 also provide reinforcement in a direction
at right angles to the direction of the ribs 2.
If a gap exists between the abutting parts 6 before concrete is
poured over the sheets 1, the weight of the concrete when poured
forces the parts 6 together. Thus the width of the cavities 5
between the spaced legs 4 is substantially constant.
The spaced legs 4 of the ribs 2 provide a means for fixing ceiling
brackets 15 or ceiling suspension supports 16 directly to the
underside of the sheets 1. Self-tapping screws 17 or nails 18 for
example, can be secured in engagement with the legs 4 in the space
between said legs 4, or in engagement with the abutting parts 6, as
seen particularly in FIG. 2. The screws 17 or nails 18 firmly embed
in the metal of the sheets and provide adequate holding means for
the brackets 15 or supports 16.
* * * * *